Elevator door system

Abstract

An elevator door system capable of detecting when a hanger roller needs replacement due to wear is provided. The elevator door system comprises a hanger housing, a door rail, a hanger roller, an operating unit, and a switch. As the hanger roller rolls on the door rail, the operating unit rotates about the hanger roller's rotation axis while moving along the door rail. When the hanger roller wear is below a predetermined value, the operating unit does not operate the switch while the elevator door moves from a closed position to an open position. When the hanger roller wear exceeds a predetermined value, the operating unit operates the switch while the elevator door moves from a closed position to an open position.

Description

Technical Field

[0001] The present disclosure relates to an elevator door arrangement system. Background Art

[0002] Conventionally, there is a known elevator door system that measures the time it takes for an elevator door to move from a closed position to an open position, compares the measured time with a preset reference value, and determines whether the elevator door system has any abnormality (see, for example, Patent Document 1).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2017-193399 Summary of the Invention

[0006] Problems to be solved by the invention

[0007] As elevator doors move, the hanger rollers attached to the doors wear. Long-term use of the elevator door system necessitates replacement of the hanger rollers due to wear. However, the structure described in Patent Document 1 has a problem in that it cannot detect when the hanger rollers need replacement due to wear.

[0008] The present disclosure has been made to solve the above-mentioned problems, and an object of the present disclosure is to provide an elevator door device system that can detect that a hanger roller needs to be replaced due to wear.

[0009] Means for solving problems

[0010] The elevator door device system disclosed in the present invention comprises: a hanger shell; a door rail, which is arranged on the hanger shell; a hanger roller, which is arranged on the elevator door, and when the elevator door moves between the closed door position and the open door position, the hanger roller rolls on the door rail; an operating unit, which is arranged on the hanger roller; and a switch, which is arranged on the hanger shell, and as the hanger roller rolls on the door rail, the operating unit rotates around the rotation axis of the hanger roller while moving in the direction along the door rail. When the wear amount of the hanger roller is less than a preset value, the operating unit does not operate the switch during the period when the elevator door moves from the closed door position to the open door position. When the wear amount of the hanger roller is greater than a preset value, the operating unit operates the switch during the period when the elevator door moves from the closed door position to the open door position.

[0011] The elevator door device system disclosed in the present invention comprises: a hanger housing; a door rail, which is provided on the hanger housing; a hanger roller, which is provided on the elevator door, and when the elevator door moves between the door closing position and the door opening position, the hanger roller rolls on the door rail; a first mark, which is provided on the hanger housing; and a second mark, which is provided on the hanger roller, as the hanger roller rolls on the door rail, the second mark rotates around the rotation axis of the hanger roller while moving in the direction along the door rail. When the wear amount of the hanger roller is less than a preset value, the elevator door moves from the door closing position to the door opening position and the hanger roller rotates by a preset rotation amount. In this case, the position of the first mark is closer to the door closing side than the position of the second mark in the direction along the door track, and when the wear of the hanger roller is consistent with the preset value, the elevator door moves from the door closing position to the door opening position and the hanger roller rotates a preset amount, the position of the first mark is consistent with the position of the second mark in the direction along the door track, and when the wear of the hanger roller is greater than the preset value, the elevator door moves from the door closing position to the door opening position and the hanger roller rotates a preset amount, the position of the first mark is closer to the door opening side than the position of the second mark in the direction along the door track.

[0012] Effects of the Invention

[0013] According to the elevator door device system of the present disclosure, it is possible to detect that the hanger roller needs to be replaced due to wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a block diagram showing the elevator door system according to the first embodiment.

[0015] Figure 2 It shows Figure 1 A front view of an elevator door device of an embodiment of the present invention with the elevator door located in a closed position.

[0016] Figure 3 It shows Figure 2 A front view of an elevator door device of an embodiment of the present invention with the elevator door located in an open position.

[0017] Figure 4 It shows Figure 3 A front view of a state in which the first operating portion operates the first lever switch and the second operating portion operates the second lever switch.

[0018] Figure 5 This is a flowchart showing the processing of the elevator door system according to the first embodiment.

[0019] Figure 6 This is a front view showing a state in which the elevator door of the elevator door device in the elevator door device system according to the second embodiment is located at the door closing position.

[0020] Figure 7 It shows Figure 6 A front view of an elevator door device of an embodiment of the present invention with the elevator door located in an open position.

[0021] Figure 8 It shows Figure 7 A front view of a state in which the wear amount of the first hanger roller and the wear amount of the fourth hanger roller respectively coincide with preset values. DETAILED DESCRIPTION

[0022] Implementation Method 1

[0023] Figure 1 This is a block diagram showing an elevator door system according to Embodiment 1. The elevator door system according to Embodiment 1 includes an elevator door system 1 , an elevator control panel 2 , a remote monitoring device 3 , an information center 4 , a first switch 5 , a second switch 6 , and an abnormality detection device 7 .

[0024] The elevator door device 1 includes a drive motor 101 and a door control device 102. The door control device 102 controls the driving of the drive motor 101.

[0025] Figure 2 It shows Figure 1 A front view of the elevator door device 1 showing a state where the elevator door is in the closed position. Figure 3 It shows Figure 2 This figure shows a front view of an elevator door device 1 with the elevator door in the door-open position. The elevator door device 1 includes a hanger housing 103, a drive pulley 104, a drive belt 105, a driven pulley 106, a drive roller 107, an interlocking rope 108, and a driven roller 109. Furthermore, the elevator door device 1 includes a door rail 110, a first car door 111, a second car door 112, a first door hanger 113, a second door hanger 114, a first connecting member 115, and a second connecting member 116. Furthermore, the elevator door device 1 includes a first hanger roller 117, a second hanger roller 118, a third hanger roller 119, a fourth hanger roller 120, a first operating unit 121, and a second operating unit 122.

[0026] The hanger housing 103 is installed in an elevator car (not shown). Figure 2 and Figure 3 A portion of the elevator door device 1 is shown when the elevator car is viewed from a landing (not shown). A drive motor 101 is mounted on the elevator car. A drive pulley 104 is connected to the rotating shaft of the drive motor 101. Therefore, when the drive motor 101 is driven, the drive pulley 104 rotates.

[0027] The driven pulley 106 is rotatably supported on the hanger housing 103. The drive belt 105 is formed into an endless shape. The drive belt 105 is provided across the drive pulley 104 and the driven pulley 106. The rotational force of the drive pulley 104 is transmitted to the drive belt 105. As the drive pulley 104 rotates, the drive belt 105 circulates. The rotational force of the drive pulley 104 is transmitted to the driven pulley 106 via the drive belt 105. As a result, the drive pulley 104 rotates, which in turn rotates the driven pulley 106.

[0028] The driving roller 107 is connected to the driven pulley 106. When the driven pulley 106 rotates, the driving roller 107 rotates. The rotation speed of the driven pulley 106 and the rotation speed of the driving roller 107 are the same as each other.

[0029] The driven roller 109 is rotatably supported on the hanger housing 103. The driving roller 107 and the driven roller 109 are arranged apart from each other in the width direction A of the elevator car. The width direction A of the elevator car is a direction perpendicular to the height direction of the elevator car when viewed from the landing. The interlocking rope 108 is formed in a loop. The interlocking rope 108 is provided across the driving roller 107 and the driven roller 109. The rotational force of the driving roller 107 is transmitted to the interlocking rope 108. As the driving roller 107 rotates, the interlocking rope 108 circulates. The rotational force of the driving roller 107 is transmitted to the driven roller 109 via the interlocking rope 108. Therefore, the driving roller 107 rotates, thereby rotating the driven roller 109.

[0030] The door rail 110 is mounted on the hanger housing 103. The door rail 110 is arranged along the width direction A of the elevator car. Therefore, the direction along the door rail 110 is the same direction as the direction along the width direction A of the elevator car.

[0031] The first car door 111 and the second car door 112 are elevator doors. The first car door 111 and the second car door 112 each move in the width direction A of the elevator car. As the first car door 111 and the second car door 112 each move, the entrance and exit of the elevator car are opened and closed. The position of the first car door 111 and the position of the second car door 112 when the entrance and exit of the elevator car are open are respectively set as the open door position. The position of the first car door 111 and the position of the second car door 112 when the entrance and exit of the elevator car are closed are respectively set as the closed door position. Therefore, the first car door 111 and the second car door 112 each move between the open door position and the closed door position.

[0032] The first door hanger 113 is a door hanger attached to the upper portion of the first car door 111. The first hanger roller 117 and the second hanger roller 118 are hanger rollers provided on the first car door 111 via the first door hanger 113. The first hanger roller 117 and the second hanger roller 118 are rotatably attached to the first door hanger 113.

[0033] The first hanger roller 117 and the second hanger roller 118 are arranged to be separated from each other in the width direction A of the elevator car. The first hanger roller 117 and the second hanger roller 118 are respectively placed on the upper surface of the door rail 110. The first car door 111 is supported on the door rail 110 via the first door hanger 113, the first hanger roller 117, and the second hanger roller 118. When the first car door 111 moves in the width direction A of the elevator car, the first hanger roller 117 and the second hanger roller 118 roll on the upper surface of the door rail 110. As the first hanger roller 117 and the second hanger roller 118 roll on the upper surface of the door rail 110, respectively, wear occurs on the first hanger roller 117 and the second hanger roller 118. When the wear amount of the first hanger roller 117 and the wear amount of the second hanger roller 118 are larger than a preset value, the first hanger roller 117 and the second hanger roller 118 need to be replaced.

[0034] The second door hanger 114 is a door hanger attached to the upper portion of the second car door 112. The third hanger roller 119 and the fourth hanger roller 120 are hanger rollers provided on the second car door 112 via the second door hanger 114. The third hanger roller 119 and the fourth hanger roller 120 are rotatably attached to the second door hanger 114.

[0035] The third hanger roller 119 and the fourth hanger roller 120 are arranged to be separated from each other in the width direction A of the elevator car. The third hanger roller 119 and the fourth hanger roller 120 are respectively placed on the upper surface of the door rail 110. The second car door 112 is supported on the door rail 110 via the second door hanger 114, the third hanger roller 119, and the fourth hanger roller 120. When the second car door 112 moves in the width direction A of the elevator car, the third hanger roller 119 and the fourth hanger roller 120 roll on the upper surface of the door rail 110. As the third hanger roller 119 and the fourth hanger roller 120 roll on the upper surface of the door rail 110, respectively, wear occurs on the third hanger roller 119 and the fourth hanger roller 120. When the wear amount of the third hanger roller 119 and the wear amount of the fourth hanger roller 120 are larger than a preset value, the third hanger roller 119 and the fourth hanger roller 120 need to be replaced.

[0036] The first connecting member 115 connects the first door hanger 113 and the lower portion of the interlocking rope 108. As the interlocking rope 108 circulates, the first connecting member 115 moves in the width direction A of the elevator car. As the first connecting member 115 moves, the first car door 111 moves in the width direction A of the elevator car.

[0037] The second connecting member 116 connects the second door hanger 114 and the upper portion of the interlocking rope 108. As the interlocking rope 108 circulates, the second connecting member 116 moves in the width direction A of the elevator car. As the second connecting member 116 moves, the second car door 112 moves in the width direction A of the elevator car.

[0038] The direction in which the first connecting member 115 moves is opposite to the direction in which the second connecting member 116 moves. Therefore, the direction in which the first car door 111 moves is opposite to the direction in which the second car door 112 moves.

[0039] The first operating portion 121 is provided on the first hanger roller 117. As the first hanger roller 117 rolls on the door rail 110, the first operating portion 121 moves along the door rail 110 while rotating about the rotation axis of the first hanger roller 117.

[0040] The second operating portion 122 is provided on the fourth hanger roller 120. As the fourth hanger roller 120 rolls on the door rail 110, the second operating portion 122 moves along the door rail 110 while rotating about the rotation axis of the fourth hanger roller 120.

[0041] As the first hanger roller 117 wears, the diameter of the first hanger roller 117 decreases. As the diameter of the first hanger roller 117 decreases, the circumference of the first hanger roller 117 decreases. As the circumference of the first hanger roller 117 decreases, the amount of rotation of the first hanger roller 117 increases while the first car door 111 moves from the closed position to the open position.

[0042] As the fourth hanger roller 120 wears, the diameter of the fourth hanger roller 120 decreases. As the diameter of the fourth hanger roller 120 decreases, the circumference of the fourth hanger roller 120 decreases. As the circumference of the fourth hanger roller 120 decreases, the amount of rotation of the fourth hanger roller 120 increases while the second car door 112 moves from the closed position to the open position.

[0043] The first switch 5 is provided on the hanger case 103. The first switch 5 includes a lever 501 and a rotation detector 502. The lever 501 is rotatably supported by the rotation detector 502. The lever 501 is rotated by operating the lever 501. The rotation detector 502 detects the rotation of the lever 501.

[0044] The second switch 6 is provided on the hanger case 103. The second switch 6 includes a lever 601 and a rotation detector 602. The lever 601 is rotatably supported by the rotation detector 602. The lever 601 is rotated by operating the lever 601. The rotation detector 602 detects the rotation of the lever 601.

[0045] Figure 4 It shows Figure 3 1 and 1 . This is a front view of a state in which the first operating part 121 operates the first switch 5 and the second operating part 122 operates the second switch 6. When the amount of wear of the first hanger roller 117 is less than a preset value, the first operating part 121 does not operate the lever 501 of the first switch 5 while the first car door 111 moves from the door-closed position to the door-open position. On the other hand, when the amount of wear of the first hanger roller 117 is greater than a preset value, the first operating part 121 operates the lever 501 of the first switch 5 while the first car door 111 moves from the door-closed position to the door-open position.

[0046] When the amount of wear of the fourth hanger roller 120 is less than a preset value, the second operating unit 122 does not operate the lever 601 of the second switch 6 while the second car door 112 moves from the door-closed position to the door-open position. On the other hand, when the amount of wear of the fourth hanger roller 120 is greater than a preset value, the second operating unit 122 operates the lever 601 of the second switch 6 while the second car door 112 moves from the door-closed position to the door-open position.

[0047] The detection result of the first switch 5 is output from the first switch 5. The detection result of the first switch 5 output from the first switch 5 is input to the abnormality detection device 7. The detection result of the second switch 6 is output from the second switch 6. The detection result of the second switch 6 output from the second switch 6 is input to the abnormality detection device 7.

[0048] The abnormality detection device 7 uses the detection result of the first switch 5 to determine whether the first switch 5 has been operated. In addition, the abnormality detection device 7 determines whether the first hanger roller 117 needs to be replaced due to wear based on whether the first switch 5 has been operated. Therefore, the abnormality detection device 7 detects that the first hanger roller 117 needs to be replaced due to wear based on the detection result of the first switch 5.

[0049] The abnormality detection device 7 uses the detection result of the second switch 6 to determine whether the second switch 6 has been operated. In addition, the abnormality detection device 7 determines whether the fourth hanger roller 120 needs to be replaced due to wear based on whether the second switch 6 has been operated. Therefore, the abnormality detection device 7 detects that the fourth hanger roller 120 needs to be replaced due to wear based on the detection result of the second switch 6.

[0050] When the abnormality detection device 7 detects that the first hanger roller 117 needs to be replaced due to wear, the abnormality detection device 7 outputs a signal indicating that the first hanger roller 117 needs to be replaced due to wear. The signal indicating that the first hanger roller 117 needs to be replaced due to wear is input from the abnormality detection device 7 to the remote monitoring device 3 via the elevator control panel 2. When the signal indicating that the first hanger roller 117 needs to be replaced due to wear is input to the remote monitoring device 3, the remote monitoring device 3 reports to the information center 4 that the first hanger roller 117 needs to be replaced due to wear.

[0051] When the abnormality detection device 7 detects that the fourth hanger roller 120 needs to be replaced due to wear, the abnormality detection device 7 outputs a signal indicating that the fourth hanger roller 120 needs to be replaced due to wear. The signal indicating that the fourth hanger roller 120 needs to be replaced due to wear is input from the abnormality detection device 7 to the remote monitoring device 3 via the elevator control panel 2. When the signal indicating that the fourth hanger roller 120 needs to be replaced due to wear is input to the remote monitoring device 3, the remote monitoring device 3 reports to the information center 4 that the fourth hanger roller 120 needs to be replaced due to wear.

[0052] Next, the processing of the elevator door system according to the first embodiment will be described. Figure 5 This is a flowchart showing the processing of the elevator door system according to the first embodiment.

[0053] First, in step S101, the abnormality detection device 7 determines whether the first switch 5 has been operated. If the abnormality detection device 7 determines in step S101 that the first switch 5 has not been operated, the process of the elevator door system proceeds to step S104.

[0054] On the other hand, when the abnormality detection device 7 determines in step S101 that the first switch 5 has been operated, the process of the elevator door device system proceeds to step S102.

[0055] In step S102, the abnormality detection device 7 determines that the first hanger roller 117 needs to be replaced due to wear. A signal indicating that the first hanger roller 117 needs to be replaced due to wear is then input from the abnormality detection device 7 to the remote monitoring device 3 via the elevator control panel 2. The elevator door system then proceeds to step S103.

[0056] In step S103, the remote monitoring device 3 reports to the information center 4 that the first hanger roller 117 needs to be replaced due to wear. Then, the process of the elevator door system proceeds to step S104.

[0057] In step S104, the abnormality detection device 7 determines whether the second switch 6 has been operated. If the abnormality detection device 7 determines in step S104 that the second switch 6 has not been operated, the process of the elevator door system ends.

[0058] On the other hand, when the abnormality detection device 7 determines in step S104 that the second switch 6 has been operated, the process of the elevator door device system proceeds to step S105.

[0059] In step S105, the abnormality detection device 7 determines that the fourth hanger roller 120 needs to be replaced due to wear. A signal indicating that the fourth hanger roller 120 needs to be replaced due to wear is then input from the abnormality detection device 7 to the remote monitoring device 3 via the elevator control panel 2. The elevator door system then proceeds to step S105.

[0060] In step S105, the remote monitoring device 3 reports to the information center 4 that the fourth hanger roller 120 needs to be replaced due to wear. Then, the processing of the elevator door device system ends.

[0061] As described above, the elevator door device system of embodiment 1 includes a hanger housing 103, a door rail 110, a first hanger roller 117, a first operating unit 121, and a first switch 5. The door rail 110 is provided on the hanger housing 103. The first hanger roller 117 is provided on the first car door 111. When the first car door 111 moves between the door closing position and the door opening position, the first hanger roller 117 rolls on the door rail 110. The first operating unit 121 is provided on the first hanger roller 117. The first switch 5 is provided on the hanger housing 103. As the first hanger roller 117 rolls on the door rail 110, the first operating unit 121 rotates around the rotation axis of the first hanger roller 117 while moving in the direction along the door rail 110. When the amount of wear on the first hanger roller 117 is less than a predetermined value, the first operating unit 121 does not operate the first switch 5 while the first car door 111 is moving from the closed door position to the open door position. When the amount of wear on the first hanger roller 117 is greater than a predetermined value, the first operating unit 121 operates the first switch 5 while the first car door 111 is moving from the closed door position to the open door position. With this configuration, when the first hanger roller 117 needs to be replaced due to wear, the first operating unit 121 operates the first switch 5. Thus, the elevator door system can detect that the first hanger roller 117 needs to be replaced due to wear.

[0062] In addition, the elevator door device system of embodiment 1 has a hanger housing 103, a door rail 110, a fourth hanger roller 120, a second operating unit 122, and a second switch 6. The door rail 110 is provided on the hanger housing 103. The fourth hanger roller 120 is provided on the second car door 112. When the second car door 112 moves between the door closing position and the door opening position, the fourth hanger roller 120 rolls on the door rail 110. The second operating unit 122 is provided on the fourth hanger roller 120. The second switch 6 is provided on the hanger housing 103. As the fourth hanger roller 120 rolls on the door rail 110, the second operating unit 122 rotates around the rotation axis of the fourth hanger roller 120 while moving in the direction along the door rail 110. When the amount of wear on the fourth hanger roller 120 is less than a predetermined value, the second operating unit 122 does not operate the second switch 6 while the second car door 112 moves from the closed door position to the open door position. When the amount of wear on the fourth hanger roller 120 is greater than a predetermined value, the second operating unit 122 operates the second switch 6 while the second car door 112 moves from the closed door position to the open door position. With this configuration, when the fourth hanger roller 120 needs to be replaced due to wear, the second operating unit 122 operates the second switch 6. Thus, the elevator door system can detect that the fourth hanger roller 120 needs to be replaced due to wear.

[0063] In the elevator door system of Embodiment 1, an operating unit is provided on each of the first hanger roller 117 and the fourth hanger roller 120. However, any configuration may be employed in which an operating unit is provided on at least one of the first hanger roller 117, the second hanger roller 118, the third hanger roller 119, and the fourth hanger roller 120. In this case, a switch is provided on the hanger housing 103 corresponding to the operating unit.

[0064] Furthermore, in the elevator door system of Embodiment 1, a configuration has been described for detecting when a hanger roller provided on a car door needs to be replaced due to wear. However, a configuration may also be employed for detecting when a hanger roller provided on a landing door needs to be replaced due to wear. In this case, an operating unit is provided on the hanger roller of the landing door, and a switch is provided on the hanger housing of the landing door.

[0065] Implementation Method 2

[0066] Figure 6 This is a front view showing a state in which the elevator door of the elevator door device in the elevator door device system according to the second embodiment is located at the door closing position. Figure 7 It shows Figure 6 A front view of an elevator door device of an embodiment of the present invention with the elevator door located in an open position. Figure 8 It shows Figure 7This is a front view showing a state in which the wear amounts of the first hanger roller 117 and the wear amounts of the fourth hanger roller 120 respectively match preset values. The elevator door device 1 includes a hanger housing 123, a door rail 124, a first landing door 125, a second landing door 126, a first door hanger 127, and a second door hanger 128. Furthermore, the elevator door device 1 includes a first hanger roller 129, a second hanger roller 130, a third hanger roller 131, and a fourth hanger roller 132.

[0067] The hanger housing 123 is installed on a hoistway wall (not shown). Figure 6 、 Figure 7 and Figure 8 A portion of the elevator door device 1 is shown when a hoistway wall is viewed from a hoistway (not shown).

[0068] The door rail 124 is attached to the hanger housing 123. The door rail 124 is arranged along the width direction A of the elevator car. Therefore, the direction along the door rail 124 is the same direction as the direction along the width direction A of the elevator car.

[0069] The first landing door 125 and the second landing door 126 are elevator doors. The first landing door 125 and the second landing door 126 each move in the width direction A of the elevator car. The movement of the first landing door 125 and the second landing door 126 opens and closes the entrance and exit of the elevator landing. The positions of the first landing door 125 and the second landing door 126 when the entrance and exit of the elevator landing are open are defined as the open door position. The positions of the first landing door 125 and the second landing door 126 when the entrance and exit of the elevator landing are closed are defined as the closed door position. Thus, the first landing door 125 and the second landing door 126 each move between the open door position and the closed door position.

[0070] The first door hanger 127 is a door hanger attached to the upper portion of the first landing door 125. The first hanger roller 129 and the second hanger roller 130 are hanger rollers provided on the first landing door 125 via the first door hanger 127. The first hanger roller 129 and the second hanger roller 130 are rotatably attached to the first door hanger 127.

[0071] The first hanger roller 129 and the second hanger roller 130 are arranged apart from each other in the width direction A of the elevator car. The first hanger roller 129 and the second hanger roller 130 are respectively placed on the upper surface of the door rail 124. The first landing door 125 is supported on the door rail 124 via the first door hanger 127, the first hanger roller 129, and the second hanger roller 130. When the first landing door 125 moves in the width direction A of the elevator car, the first hanger roller 129 and the second hanger roller 130 roll on the upper surface of the door rail 124. As the first hanger roller 129 and the second hanger roller 130 roll on the upper surface of the door rail 124, wear of the first hanger roller 129 and the second hanger roller 130 occurs. When the wear amount of the first hanger roller 129 and the wear amount of the second hanger roller 130 are larger than a preset value, the first hanger roller 129 and the second hanger roller 130 need to be replaced.

[0072] The second door hanger 128 is a door hanger attached to the upper portion of the second landing door 126. The third hanger roller 131 and the fourth hanger roller 132 are hanger rollers attached to the second landing door 126 via the second door hanger 128. The third hanger roller 131 and the fourth hanger roller 132 are rotatably attached to the second door hanger 128.

[0073] The third hanger roller 131 and the fourth hanger roller 132 are arranged to be spaced apart from each other in the width direction A of the elevator car. The third hanger roller 131 and the fourth hanger roller 132 are respectively placed on the upper surface of the door rail 124. The second landing door 126 is supported on the door rail 124 via the second door hanger 128, the third hanger roller 131, and the fourth hanger roller 132. When the second landing door 126 moves in the width direction A of the elevator car, the third hanger roller 131 and the fourth hanger roller 132 roll on the upper surface of the door rail 124. As the third hanger roller 131 and the fourth hanger roller 132 roll on the upper surface of the door rail 124, wear of the third hanger roller 131 and the fourth hanger roller 132 occurs. When the wear amount of the third hanger roller 131 and the wear amount of the fourth hanger roller 132 are larger than a preset value, the third hanger roller 131 and the fourth hanger roller 132 need to be replaced.

[0074] As the second hanger roller 130 wears, the diameter of the second hanger roller 130 decreases. As the diameter of the second hanger roller 130 decreases, the circumference of the second hanger roller 130 decreases. As the circumference of the second hanger roller 130 decreases, the amount of rotation of the second hanger roller 130 increases while the first landing door 125 moves from the closed position to the open position.

[0075] As the third hanger roller 131 wears, its diameter decreases. As the diameter of the third hanger roller 131 decreases, the circumference of the third hanger roller 131 decreases. As the circumference of the third hanger roller 131 decreases, the amount of rotation of the third hanger roller 131 increases while the second landing door 126 moves from the closed position to the open position.

[0076] The elevator door device system of the second embodiment includes a first symbol 8 , a first symbol 9 , a second symbol 10 , a second symbol 11 , a third symbol 12 , and a third symbol 13 .

[0077] The first mark 8 and the first mark 9 are respectively provided on the hanger case 123 .

[0078] The second mark 10 is provided on the second hanger roller 130. The second mark 10 is provided on the radially outer portion of the second hanger roller 130. As the second hanger roller 130 rolls on the door rail 124, the second mark 10 rotates about the rotation axis of the second hanger roller 130 and moves in the direction along the door rail 124.

[0079] The second mark 11 is provided on the third hanger roller 131. The second mark 11 is provided on the radially outer portion of the third hanger roller 131. As the third hanger roller 131 rolls on the door rail 124, the second mark 11 rotates about the rotation axis of the third hanger roller 131 and moves in the direction along the door rail 124.

[0080] The third mark 12 is provided on the first door hanger 127 . When the first door hanger 127 moves in the direction along the door rail 124 , the third mark 12 moves in the direction along the door rail 124 .

[0081] The third mark 13 is provided on the second door hanger 128 . When the second door hanger 128 moves in the direction along the door rail 124 , the third mark 13 moves in the direction along the door rail 124 .

[0082] When the first landing door 125 is in the closed position, the second mark 10 and the third mark 12 are arranged at positions that coincide with each other in the direction along the door rail 124. When the second landing door 126 is in the closed position, the second mark 11 and the third mark 13 are arranged at positions that coincide with each other in the direction along the door rail 124.

[0083] Next, the relationship between the first landing door 125, the second hanger roller 130, the first mark 8, the second mark 10, and the third mark 12 will be described. The relationship between the second landing door 126, the third hanger roller 131, the first mark 9, the second mark 11, and the third mark 13 is the same as the relationship between the first landing door 125, the second hanger roller 130, the first mark 8, the second mark 10, and the third mark 12.

[0084] The second hanger roller 130 in the state before wear occurs is set as a new second hanger roller 130A. Figure 6 and Figure 7 , the second hanger roller 130 is shown as a new second hanger roller 130A. The diameter of the new second hanger roller 130A is D. The circumference of the new second hanger roller 130A is π×D.

[0085] The radius of the second hanger roller 130 is reduced due to wear. When the diameter of the second hanger roller 130 is less than the replacement reference value, the second hanger roller 130 needs to be replaced. The replacement reference value is a pre-set value. The second hanger roller 130 whose diameter becomes the replacement reference value is set as the reference second hanger roller 130B. Therefore, when the diameter of the second hanger roller 130 is less than the diameter of the reference second hanger roller 130B, the second hanger roller 130 needs to be replaced due to wear. Figure 8 , a state in which the second hanger roller 130 serves as the reference second hanger roller 130B is shown.

[0086] The difference between the radius of the new second hanger roller 130A and the radius of the reference second hanger roller 130B is defined as a preset reference reduction dimension r. Therefore, if the wear amount of the second hanger roller 130 exceeds the reference reduction dimension r, the second hanger roller 130 needs to be replaced due to wear.

[0087] The circumference of the reference second hanger roller 130B is π×(D−2×r). The circumference of the reference second hanger roller 130B is smaller than the circumference of the new second hanger roller 130A by π×2×r.

[0088] The position of the second hanger roller 130 when the first landing door 125 is in the closed position is referred to as the second hanger roller closed position. The position of the second hanger roller 130 when the first landing door 125 moves from the closed position to the open position and the second hanger roller 130 rotates by a predetermined amount is referred to as the second hanger roller rotation position. In the elevator door device system of Embodiment 2, the predetermined amount of rotation is one rotation. The predetermined amount of rotation is not limited to one rotation and may be another amount of rotation.

[0089] Figure 7 and Figure 8The diagram shows a line B extending in the height direction through the center position of the second hanger roller 130 at its door-closing position, and a line C extending in the height direction through the center position of the second hanger roller 130 at its rotational position. Line B shows the center position of the second hanger roller 130 at its door-closing position along the door rail 124. Line C shows the center position of the second hanger roller 130 at its rotational position along the door rail 124.

[0090] The front side relative to the position of the second mark 10 when viewed along the direction in which the first landing door 125 moves from the closed door position to the open door position is defined as the door-opening side relative to the second mark 10. The rear side relative to the position of the second mark 10 when viewed along the direction in which the first landing door 125 moves from the closed door position to the open door position is defined as the door-closing side relative to the position of the second mark 10. The position of the first mark 8 is defined as the door-opening side relative to the position of the second mark 10 when the position of the second hanger roller 130 is in the second hanger roller closed door position.

[0091] When the second hanger roller 130 is at its door-closed position, the dimension between the first mark 8 and the second mark 10 along the door rail 124 is π×(D-2×r). Therefore, when the second hanger roller 130 is the reference second hanger roller 130B and the second hanger roller 130 is at its second hanger roller rotation position, the position of the first mark 8 coincides with the position of the second mark 10 along the door rail 124.

[0092] In other words, when the amount of wear of the second hanger roller 130 coincides with the reference reduction dimension r and the position of the second hanger roller 130 is at the second hanger roller rotation position, the position of the first mark 8 coincides with the position of the second mark 10 in the direction along the door rail 124. That is, when the position of the second hanger roller 130 is at the second hanger roller rotation position and the position of the first mark 8 coincides with the position of the second mark 10 in the direction along the door rail 124, it can be determined that the second hanger roller 130 is the reference second hanger roller 130B.

[0093] When the amount of wear of the second hanger roller 130 is smaller than the reference reduction dimension r and the second hanger roller 130 is located at the second hanger roller rotation position, the position of the first mark 8 is closer to the door closing side than the position of the second mark 10 in the direction along the door rail 124. In other words, when the second hanger roller 130 is located at the second hanger roller rotation position and the position of the first mark 8 is closer to the door closing side than the position of the second mark 10 in the direction along the door rail 124, it can be determined that the amount of wear of the second hanger roller 130 is smaller than the reference reduction dimension r.

[0094] When the amount of wear of the second hanger roller 130 is greater than the reference reduction dimension r and the position of the second hanger roller 130 is at the second hanger roller rotation position, the position of the first mark 8 is closer to the door opening side than the position of the second mark 10 in the direction along the door rail 124. In other words, when the position of the second hanger roller 130 is at the second hanger roller rotation position and the position of the first mark 8 is closer to the door opening side than the position of the second mark 10 in the direction along the door rail 124, it can be determined that the amount of wear of the second hanger roller 130 is greater than the reference reduction dimension r.

[0095] The other configurations of the elevator door system according to the second embodiment are the same as those of the elevator door system according to the first embodiment.

[0096] Next, a description will be given of a procedure for detecting that the second hanger roller 130 needs to be replaced due to wear in the elevator door system of Embodiment 2. First, the operator sets the position of the first landing door 125 to the door closing position.

[0097] Then, the operator moves the first landing door 125 from the closed position to the open position, and rotates the second hanger roller 130 by a preset amount, i.e., one rotation. At this time, the operator arranges the second mark 10 and the third mark 12 at positions that coincide with each other in the direction along the door rail 124.

[0098] The operator then visually checks the positional relationship between the first mark 8 and the second mark 10 along the door rail 124. If the position of the first mark 8 is closer to the door closing side than the position of the second mark 10 along the door rail 124, the wear amount of the second hanger roller 130 is less than the reference reduction dimension r. In this case, the operator detects that the second hanger roller 130 does not need to be replaced due to wear.

[0099] On the other hand, when the position of the first mark 8 coincides with the position of the second mark 10 along the door rail 124, the wear amount of the second hanger roller 130 coincides with the reference reduction dimension r. In this case, the operator detects that although the second hanger roller 130 does not need to be replaced due to wear, the timing for replacement is approaching.

[0100] If the first mark 8 is closer to the door opening side than the second mark 10 along the door rail 124, the wear of the second hanger roller 130 is greater than the reference reduction dimension r. In this case, the operator detects that the second hanger roller 130 needs to be replaced due to wear.

[0101] As described above, the elevator door device system of embodiment 2 includes a hanger housing 123, a door rail 124, a second hanger roller 130, a first mark 8, and a second mark 10. The door rail 124 is provided on the hanger housing 123. The second hanger roller 130 is provided on the first landing door 125. When the first landing door 125 moves between the closed position and the open position, the second hanger roller 130 rolls on the door rail 124. The first mark 8 is provided on the hanger housing 123. The second mark 10 is provided on the second hanger roller 130. As the second hanger roller 130 rolls on the door rail 124, the second mark 10 rotates about the rotation axis of the second hanger roller 130 while moving in the direction along the door rail 124. When the wear of the second hanger roller 130 is less than the reference reduction dimension r and the second hanger roller 130 is at the second hanger roller rotation position, the position of the first mark 8 is closer to the door closing side than the position of the second mark 10 along the door rail 124. When the wear of the second hanger roller 130 is consistent with the reference reduction dimension r and the second hanger roller 130 is at the second hanger roller rotation position, the position of the first mark 8 is consistent with the position of the second mark 10 along the door rail 124. When the wear of the second hanger roller 130 is greater than the reference reduction dimension r and the second hanger roller 130 is at the second hanger roller rotation position, the position of the first mark 8 is closer to the door opening side than the position of the second mark 10 along the door rail 124. This configuration allows the operator to detect the need to replace the second hanger roller 130 due to wear.

[0102] In the elevator door system of Embodiment 2, a configuration has been described in which the second hanger roller 130 and the third hanger roller 131 are each provided with a second mark. However, any configuration may be employed in which the second mark is provided on at least one of the first hanger roller 129, the second hanger roller 130, the third hanger roller 131, and the fourth hanger roller 132. In this case, the first mark is provided on the hanger housing 123 so as to correspond to the second mark.

[0103] Furthermore, in the elevator door system of Embodiment 2, a configuration is described for detecting when a hanger roller provided on a landing door needs to be replaced due to wear. However, a configuration may also be employed for detecting when a hanger roller provided on a car door needs to be replaced due to wear. In this case, a first mark is provided on the hanger housing of the car door, and a second mark is provided on the hanger roller of the car door.

[0104] The above descriptions describe preferred embodiments of elevator door systems, but the present invention is not limited to the embodiments described above. Various modifications and changes can be made to the embodiments without departing from the scope of the claims.

[0105] Label Description

[0106] 1: Elevator door device; 2: Elevator control panel; 3: Remote monitoring device; 4: Information center; 5: First switch (switch); 6: Second switch (switch); 7: Abnormality detection device; 8: First mark; 9: First mark; 10: Second mark; 11: Second mark; 12: Third mark; 13: Third mark; 101: Drive motor; 102: Door control device; 103: Hanger housing; 104: Drive pulley; 105: Drive belt; 106: Driven pulley; 107: Drive roller; 108: Interlocking rope; 109: Driven roller; 110: Door rail; 111: First car door (elevator door); 112: Second car door (elevator door); 113: First door hanger; 114: Second door hanger; 115: First connecting member; 116: Second connecting member; 117 : 1st hanger roller (hanger roller); 118: 2nd hanger roller (hanger roller); 119: 3rd hanger roller (hanger roller); 120: 4th hanger roller (hanger roller); 121: 1st operating unit (operating unit); 122: 2nd operating unit (operating unit); 123: hanger housing; 124: door rail; 125: 1st floor station door (elevator door); 126: 2nd floor station door (elevator door); 127 : 1st door hanger; 128: 2nd door hanger; 129: 1st hanger roller (hanger roller); 130: 2nd hanger roller (hanger roller); 130A: New 2nd hanger roller; 130B: Reference 2nd hanger roller; 131: 3rd hanger roller (hanger roller); 132: 4th hanger roller (hanger roller); 501: Rod; 502: Rotation detection unit; 601: Rod; 602: Rotation detection unit.

Claims

1. An elevator door device system, the elevator door device system comprising: hanger shell; a door rail, which is provided on the hanger housing; a hanger roller provided on the elevator door, the hanger roller rolling on the door rail when the elevator door moves between a closed position and an open position; an operating portion provided on the hanger roller; and A switch is provided on the hanger housing, As the hanger roller rolls on the door rail, the operating unit rotates around the rotation axis of the hanger roller and moves in the direction along the door rail. When the wear amount of the hanger roller is less than a preset value, the operating unit does not operate the switch while the elevator door moves from the door-closed position to the door-open position. When the wear amount of the hanger roller is larger than the preset value, the operating unit operates the switch while the elevator door is moving from the door-closed position to the door-open position.

2. An elevator door device system, the elevator door device system comprising: hanger shell; a door rail, which is provided on the hanger housing; a hanger roller provided on the elevator door, the hanger roller rolling on the door rail when the elevator door moves between a closed position and an open position; a first mark provided on the hanger shell; and The second mark is provided on the hanger roller. As the hanger roller rolls on the door rail, the second mark rotates around the rotation axis of the hanger roller and moves in the direction along the door rail. When the wear amount of the hanger roller is smaller than a preset value, the elevator door moves from the door-closed position to the door-open position, and the hanger roller rotates by a preset amount, the position of the first mark is closer to the door-closed side than the position of the second mark in the direction along the door rail. When the wear amount of the hanger roller matches the preset value, the elevator door moves from the door-closed position to the door-open position, and the hanger roller rotates by the preset rotation amount, the position of the first mark matches the position of the second mark in the direction along the door rail. When the wear amount of the hanger roller is greater than the preset value, the elevator door moves from the door closing position to the door opening position and the hanger roller rotates by the preset rotation amount, the position of the first mark is closer to the door opening side than the position of the second mark in the direction along the door rail.

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