Elevator door device system

Abstract

Provided is an elevator door device system capable of detecting whether the replacement of a hanger roller is necessary due to wear. This elevator door system comprises a hanger case, a door rail, hanger rollers, an operation part, and a switch, wherein: rolling of the hanger rollers roll on the door rail causes the operation part to move along the door rail while rotating about the rotation axis of the hanger rollers; when the wear amount of the hanger rollers is no more than a preset value, the operating part does not operate the switch while the elevator door is moving from a door closed position to a door open position; and when the wear amount of the hanger rollers is more than the preset value, the operating part operates the switch while the elevator door is moving from the door closed position to the door open position.

Description

Technical Field

[0001] The present disclosure relates to an elevator door device system.

Background Art

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

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When the elevator door moves, wear occurs on the hanger rollers provided on the elevator door. When the elevator door device is used over a long period of time, the hanger rollers need to be replaced due to wear. However, the configuration described in Patent Document 1 has a problem that it is impossible to detect that the hanger rollers need to be replaced due to wear.

[0005] The present disclosure has been made to solve the above-described problems, and an object thereof is to provide an elevator door device system capable of detecting that the hanger rollers need to be replaced due to wear.

Means for Solving the Problems

[0006] The elevator door device system according to the present disclosure includes a hanger case, a door rail provided on the hanger case, a hanger roller provided on the elevator door and rolling on the door rail when the elevator door moves between a door closed position and a door open position, an operation part provided on the hanger roller, and a switch provided on the hanger case. The operation part moves in a direction along the door rail while rotating about the rotation axis of the hanger roller as the hanger roller rolls on the door rail. When the wear amount of the hanger roller is less than or equal to a preset value, the operation part 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 greater than the preset value, the operation part operates the switch while the elevator door moves from the door closed position to the door open position. The elevator door device system according to the present disclosure includes a hanger case, a door rail provided on the hanger case, a hanger roller provided on the elevator door and rolling on the door rail when the elevator door moves between a door closed position and a door open position, a first mark provided on the hanger case, and a second mark provided on the hanger roller. The second mark moves in a direction along the door rail while rotating about the rotation axis of the hanger roller as the hanger roller rolls on the door rail. When the wear amount of the hanger roller is less than the preset value and the elevator door moves from the door closed position toward the door open position and the hanger roller rotates by a preset rotation 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 coincides with the preset value and the elevator door moves from the door closed position toward the door open position and the hanger roller rotates by a preset rotation amount, the position of the first mark coincides with 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 and the elevator door moves from the door closed position toward the door open position and the hanger roller rotates by a preset rotation amount, the position of the first mark is closer to the door open side than the position of the second mark in the direction along the door rail.

Effect of the Invention

[0007] According to the elevator door device system according to the present disclosure, it is possible to detect that the hanger roller needs to be replaced due to wear.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Modes for Carrying Out the Invention

[0009] Embodiment 1. FIG. 1 is a block diagram showing an elevator door device system according to Embodiment 1. The elevator door device system according to Embodiment 1 includes an elevator door device 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.

[0010] The elevator door device 1 includes a drive motor 101 and a door control device 102. The door control device 102 controls the drive of the drive motor 101.

[0011] FIG. 2 is a front view showing a state in which the elevator door of the elevator door device 1 in FIG. 1 is in the door-closed position. FIG. 3 is a front view showing a state in which the elevator door of the elevator door device 1 in FIG. 2 is in the door-open position. The elevator door device 1 includes a hanger case 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. Further, 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. Further, 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 operation unit 121, and a second operation unit 122.

[0012] The hanger case 103 is provided in an elevator car (not shown). FIGS. 2 and 3 show a part of the elevator door device 1 when viewed from a landing (not shown) toward the elevator car. The drive motor 101 is mounted on the elevator car. The drive pulley 104 is connected to the rotating shaft of the drive motor 101. Therefore, when the drive motor 101 drives, the drive pulley 104 rotates.

[0013] The driven pulley 106 is rotatably supported by the hanger case 103. The drive belt 105 is formed in 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. When 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. Therefore, when the drive pulley 104 rotates, the driven pulley 106 rotates.

[0014] The drive roller 107 is connected to the driven pulley 106. When the driven pulley 106 rotates, the drive roller 107 rotates. The rotational speed of the driven pulley 106 and the rotational speed of the drive roller 107 are the same as each other.

[0015] The driven roller 109 is rotatably supported by the hanger case 103. The drive 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 orthogonal to the height direction when viewing the elevator car from the landing. The interlocking rope 108 is formed in an endless shape. The interlocking rope 108 is provided across the drive roller 107 and the driven roller 109. The rotational force of the drive roller 107 is transmitted to the interlocking rope 108. When the drive roller 107 rotates, the interlocking rope 108 circulates. The rotational force of the drive roller 107 is transmitted to the driven roller 109 via the interlocking rope 108. Therefore, when the drive roller 107 rotates, the driven roller 109 rotates.

[0016] The door rail 110 is attached to the hanger case 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.

[0017] The first car door 111 and the second car door 112 are elevator doors. Each of the first car door 111 and the second car door 112 moves in the width direction A of the elevator car. When each of the first car door 111 and the second car door 112 moves, the entrance and exit of the elevator car are opened and closed. The positions of the first car door 111 and the second car door 112 when the entrance and exit of the elevator car are open are defined as the door-open positions. The positions of the first car door 111 and the second car door 112 when the entrance and exit of the elevator car are closed are defined as the door-closed positions. Therefore, each of the first car door 111 and the second car door 112 moves between the door-open position and the door-closed position.

[0018] The first door hanger 113 is a door hanger attached to the upper part of the first car door 111. Each of the first hanger roller 117 and the second hanger roller 118 is a hanger roller provided on the first car door 111 via the first door hanger 113. Each of the first hanger roller 117 and the second hanger roller 118 is rotatably attached to the first door hanger 113.

[0019] The first hanger roller 117 and the second hanger roller 118 are arranged apart from each other in the width direction A of the elevator car. Each of the first hanger roller 117 and the second hanger roller 118 is placed on the upper surface of the door rail 110. The first car door 111 is supported by 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, each of the first hanger roller 117 and the second hanger roller 118 rolls on the upper surface of the door rail 110. Wear occurs on each of the first hanger roller 117 and the second hanger roller 118 when each of them rolls on the upper surface of the door rail 110. 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, it is necessary to replace the first hanger roller 117 and the second hanger roller 118.

[0020] The second door hanger 114 is a door hanger attached to the upper part of the second car door 112. Each of the third hanger roller 119 and the fourth hanger roller 120 is a hanger roller provided on the second car door 112 via the second door hanger 114. Each of the third hanger roller 119 and the fourth hanger roller 120 is rotatably attached to the second door hanger 114.

[0021] The third hanger roller 119 and the fourth hanger roller 120 are arranged apart from each other in the width direction A of the elevator car. Each of the third hanger roller 119 and the fourth hanger roller 120 is placed on the upper surface of the door rail 110. The second car door 112 is supported by 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, each of the third hanger roller 119 and the fourth hanger roller 120 rolls on the upper surface of the door rail 110. Wear occurs on each of the third hanger roller 119 and the fourth hanger roller 120 when each of them rolls on the upper surface of the door rail 110. When the wear amount of the third hanger roller 119 and the wear amount of the fourth hanger roller 120 are larger than preset values, it is necessary to replace the third hanger roller 119 and the fourth hanger roller 120.

[0022] The first connecting member 115 connects the first door hanger 113 and the lower part of the interlocking rope 108. As the interlocking rope 108 moves in a circulating manner, 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.

[0023] The second connecting member 116 connects the second door hanger 114 and the upper part of the interlocking rope 108. As the interlocking rope 108 moves in a circulating manner, 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.

[0024] The direction in which the first connecting member 115 moves and the direction in which the second connecting member 116 moves are opposite to each other. Therefore, the direction in which the first car door 111 moves and the direction in which the second car door 112 moves are opposite to each other.

[0025] The first operation unit 121 is an operation unit provided on the first hanger roller 117. As the first hanger roller 117 rolls on the door rail 110, the first operation unit 121 moves in the direction along the door rail 110 while rotating about the rotation axis of the first hanger roller 117.

[0026] The second operation unit 122 is an operation unit provided on the fourth hanger roller 120. As the fourth hanger roller 120 rolls on the door rail 110, the second operation unit 122 moves in the direction along the door rail 110 while rotating about the rotation axis of the fourth hanger roller 120.

[0027] As the first hanger roller 117 wears, the diameter of the first hanger roller 117 becomes smaller. As the diameter of the first hanger roller 117 becomes smaller, the circumference of the first hanger roller 117 becomes smaller. As the circumference of the first hanger roller 117 becomes smaller, the amount of rotation of the first hanger roller 117 when the first cage door 111 moves from the door-closed position to the door-open position becomes larger.

[0028] As the fourth hanger roller 120 wears, the diameter of the fourth hanger roller 120 becomes smaller. As the diameter of the fourth hanger roller 120 becomes smaller, the circumference of the fourth hanger roller 120 becomes smaller. As the circumference of the fourth hanger roller 120 becomes smaller, the amount of rotation of the fourth hanger roller 120 when the second cage door 112 moves from the door-closed position to the door-open position becomes larger.

[0029] The first switch 5 is provided on the hanger case 103. The first switch 5 has a lever 501 and a rotation detection unit 502. The lever 501 is rotatably supported by the rotation detection unit 502. When the lever 501 is operated, the lever 501 rotates. The rotation detection unit 502 detects the rotation of the lever 501.

[0030] The second switch 6 is provided on the hanger case 103. The second switch 6 has a lever 601 and a rotation detection unit 602. The lever 601 is rotatably supported by the rotation detection unit 602. When the lever 601 is operated, the lever 601 rotates. The rotation detection unit 602 detects the rotation of the lever 601.

[0031] FIG. 4 is a front view showing a state where the first operation unit 121 in FIG. 3 operates the first switch 5 and the second operation unit 122 operates the second switch 6. When the wear amount of the first hanger roller 117 is equal to or less than a preset value, the first operation unit 121 does not operate the lever 501 of the first switch 5 while the first cage door 111 moves from the door closed position to the door open position. On the other hand, when the wear amount of the first hanger roller 117 is greater than the preset value, the first operation unit 121 operates the lever 501 of the first switch 5 while the first cage door 111 moves from the door closed position to the door open position.

[0032] When the wear amount of the fourth hanger roller 120 is equal to or less than a preset value, the second operation unit 122 does not operate the lever 601 of the second switch 6 while the second cage door 112 moves from the door closed position to the door open position. On the other hand, when the wear amount of the fourth hanger roller 120 is greater than the preset value, the second operation unit 122 operates the lever 601 of the second switch 6 while the second cage door 112 moves from the door closed position to the door open position.

[0033] 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.

[0034] The abnormality detection device 7 determines whether the first switch 5 has been operated using the detection result of the first switch 5. Further, the abnormality detection device 7 determines whether it is necessary to replace the first hanger roller 117 due to wear based on whether the first switch 5 has been operated. Therefore, the abnormality detection device 7 detects that it is necessary to replace the first hanger roller 117 due to wear based on the detection result of the first switch 5.

[0035] The abnormality detection device 7 determines whether the second switch 6 has been operated using the detection result of the second switch 6. Further, the abnormality detection device 7 determines whether it is necessary to replace the fourth hanger roller 120 due to wear based on whether the second switch 6 has been operated. Therefore, the abnormality detection device 7 detects that it is necessary to replace the fourth hanger roller 120 due to wear based on the detection result of the second switch 6.

[0036] When the abnormality detection device 7 detects that it is necessary to replace the first hanger roller 117 due to wear, the abnormality detection device 7 outputs a signal indicating that it is necessary to replace the first hanger roller 117 due to wear. The signal indicating that it is necessary to replace the first hanger roller 117 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 it is necessary to replace the first hanger roller 117 due to wear is input to the remote monitoring device 3, the remote monitoring device 3 reports to the information center 4 that it is necessary to replace the first hanger roller 117 due to wear.

[0037] 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.

[0038] Next, the processing of the elevator door device system according to Embodiment 1 will be described. FIG. 5 is a flowchart showing the processing of the elevator door device system according to Embodiment 1.

[0039] 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 processing of the elevator door device system proceeds to step S104.

[0040] On the other hand, if the abnormality detection device 7 determines in step S101 that the first switch 5 has been operated, the processing of the elevator door device system proceeds to step S102.

[0041] In step S102, the abnormality detection device 7 determines that the first hanger roller 117 needs to be replaced due to wear. Thereafter, a 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. Thereafter, the processing of the elevator door device system proceeds to step S103.

[0042] 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 processing of the elevator door device system proceeds to step S104.

[0043] In step S104, the abnormality detection device 7 determines whether the second switch 6 has been operated. In step S104, if the abnormality detection device 7 determines that the second switch 6 has not been operated, the processing of the elevator door device system ends.

[0044] On the other hand, in step S104, if the abnormality detection device 7 determines that the second switch 6 has been operated, the processing of the elevator door device system proceeds to step S105.

[0045] In step S105, the abnormality detection device 7 determines that the fourth hanger roller 120 needs to be replaced due to wear. Then, a 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. Then, the processing of the elevator door device system proceeds to step S105.

[0046] 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.

[0047] As described above, the elevator door device system according to Embodiment 1 includes a hanger case 103, a door rail 110, a first hanger roller 117, a first operation unit 121, and a first switch 5. The door rail 110 is provided on the hanger case 103. The first hanger roller 117 is provided on the first car door 111. The first hanger roller 117 rolls on the door rail 110 when the first car door 111 moves between the door-closed position and the door-open position. The first operation unit 121 is provided on the first hanger roller 117. The first switch 5 is provided on the hanger case 103. The first operation unit 121 moves in the direction along the door rail 110 while rotating around the rotation axis of the first hanger roller 117 as the first hanger roller 117 rolls on the door rail 110. When the wear amount of the first hanger roller 117 is equal to or less than a preset value, the first operation unit 121 does not operate the first switch 5 while the first car door 111 moves from the door-closed position to the door-open position. When the wear amount of the first hanger roller 117 is greater than the preset value, the first operation unit 121 operates the first switch 5 while the first car door 111 moves from the door-closed position to the door-open position. According to this configuration, when it is necessary to replace the first hanger roller 117 due to wear, the first switch 5 is operated by the first operation unit 121. Thereby, the elevator door device system can detect that it is necessary to replace the first hanger roller 117 due to wear.

[0048] In addition, the elevator door device system according to Embodiment 1 includes a hanger case 103, a door rail 110, a fourth hanger roller 120, a second operation unit 122, and a second switch 6. The door rail 110 is provided on the hanger case 103. The fourth hanger roller 120 is provided on the second car door 112. The fourth hanger roller 120 rolls on the door rail 110 when the second car door 112 moves between the door closed position and the door open position. The second operation unit 122 is provided on the fourth hanger roller 120. The second switch 6 is provided on the hanger case 103. As the fourth hanger roller 120 rolls on the door rail 110, the second operation unit 122 moves in a direction along the door rail 110 while rotating about the rotation axis of the fourth hanger roller 120. When the wear amount of the fourth hanger roller 120 is equal to or less than a preset value, the second operation unit 122 does not operate the second switch 6 while the second car door 112 moves from the door closed position to the door open position. When the wear amount of the fourth hanger roller 120 is greater than the preset value, the second operation unit 122 operates the second switch 6 while the second car door 112 moves from the door closed position to the door open position. According to this configuration, when it is necessary to replace the fourth hanger roller 120 due to wear, the second switch 6 is operated by the second operation unit 122. Thereby, the elevator door device system can detect that it is necessary to replace the fourth hanger roller 120 due to wear.

[0049] Note that, in the elevator door device system according to Embodiment 1, the configuration in which an operation unit is provided on each of the first hanger roller 117 and the fourth hanger roller 120 has been described. However, a configuration in which an operation 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 may be sufficient. In this case, a switch is provided on the hanger case 103 corresponding to the operation unit.

[0050] In addition, in the elevator door device system according to Embodiment 1, a configuration for detecting that the hanger roller provided on the car door needs to be replaced due to wear has been described. However, a configuration for detecting that the hanger roller provided on the landing door needs to be replaced due to wear may also be used. In this case, an operation unit is provided on the hanger roller of the landing door, and a switch is provided on the hanger case of the landing door.

[0051] Embodiment 2. FIG. 6 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 Embodiment 2 is in the door-closed position. FIG. 7 is a front view showing a state in which the elevator door of the elevator door device in FIG. 6 is in the door-open position. FIG. 8 is a front view showing a state in which the wear amount of the first hanger roller 117 and the wear amount of the fourth hanger roller 120 in FIG. 7 each match a preset value. The elevator door device 1 includes a hanger case 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. The elevator door device 1 also includes a first hanger roller 129, a second hanger roller 130, a third hanger roller 131, and a fourth hanger roller 132.

[0052] The hanger case 123 is provided on a hoistway wall (not shown). FIGS. 6, 7, and 8 show a part of the elevator door device 1 when viewing the hoistway wall from a hoistway (not shown).

[0053] The door rail 124 is attached to the hanger case 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 as the direction along the width direction A of the elevator car.

[0054] The first landing door 125 and the second landing door 126 are elevator doors. Each of the first landing door 125 and the second landing door 126 moves in the width direction A of the elevator car. By the movement of each of the first landing door 125 and the second landing door 126, the entrance / exit of the elevator landing is opened and closed. The positions of the first landing door 125 and the second landing door 126 when the entrance / exit of the elevator landing is open are each defined as the door-open position. The positions of the first landing door 125 and the second landing door 126 when the entrance / exit of the elevator landing is closed are each defined as the door-closed position. Therefore, each of the first landing door 125 and the second landing door 126 moves between the door-open position and the door-closed position.

[0055] The first door hanger 127 is a door hanger attached to the upper part of the first landing door 125. Each of the first hanger roller 129 and the second hanger roller 130 is a hanger roller provided on the first landing door 125 via the first door hanger 127. Each of the first hanger roller 129 and the second hanger roller 130 is rotatably attached to the first door hanger 127.

[0056] 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. Each of the first hanger roller 129 and the second hanger roller 130 is placed on the upper surface of the door rail 124. The first landing door 125 is supported by 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, each of the first hanger roller 129 and the second hanger roller 130 rolls on the upper surface of the door rail 124. Wear occurs on each of the first hanger roller 129 and the second hanger roller 130 when each of them rolls on the upper surface of the door rail 124. When the wear amount of the first hanger roller 129 and the wear amount of the second hanger roller 130 are greater than a preset value, it becomes necessary to replace the first hanger roller 129 and the second hanger roller 130.

[0057] The second door hanger 128 is a door hanger attached to the upper part of the second landing door 126. Each of the third hanger roller 131 and the fourth hanger roller 132 is a hanger roller provided on the second landing door 126 via the second door hanger 128. Each of the third hanger roller 131 and the fourth hanger roller 132 is rotatably attached to the second door hanger 128.

[0058] The third hanger roller 131 and the fourth hanger roller 132 are arranged apart from each other in the width direction A of the elevator car. Each of the third hanger roller 131 and the fourth hanger roller 132 is placed on the upper surface of the door rail 124. The second landing door 126 is supported by 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, each of the third hanger roller 131 and the fourth hanger roller 132 rolls on the upper surface of the door rail 124. Wear occurs on each of the third hanger roller 131 and the fourth hanger roller 132 as each of them rolls on the upper surface of the door rail 124. When the wear amount of the third hanger roller 131 and the wear amount of the fourth hanger roller 132 are larger than preset values, it becomes necessary to replace the third hanger roller 131 and the fourth hanger roller 132.

[0059] As the second hanger roller 130 wears, the diameter of the second hanger roller 130 becomes smaller. As the diameter of the second hanger roller 130 becomes smaller, the circumference of the second hanger roller 130 becomes smaller. As the circumference of the second hanger roller 130 becomes smaller, the amount of rotation by which the second hanger roller 130 rotates while the first landing door 125 moves from the door-closed position to the door-open position becomes larger.

[0060] As the third hanger roller 131 wears, the diameter of the third hanger roller 131 becomes smaller. As the diameter of the third hanger roller 131 becomes smaller, the circumference of the third hanger roller 131 becomes smaller. As the circumference of the third hanger roller 131 becomes smaller, the amount of rotation by which the third hanger roller 131 rotates while the second landing door 126 moves from the door-closed position to the door-open position becomes larger.

[0061] The elevator door device system according to Embodiment 2 includes a first mark 8, a first mark 9, a second mark 10, a second mark 11, a third mark 12, and a third mark 13.

[0062] Each of the first mark 8 and the first mark 9 is provided on the hanger case 123.

[0063] 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 moves in the direction along the door rail 124 while rotating about the rotation axis of the second hanger roller 130.

[0064] 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 moves in the direction along the door rail 124 while rotating about the rotation axis of the third hanger roller 131.

[0065] The third mark 12 is provided on the first door hanger 127. As 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.

[0066] The third mark 13 is provided on the second door hanger 128. As 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.

[0067] When it is the door-closed position of the position of the first landing door 125, 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 position of the second landing door 126 is the door-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.

[0068] The relationships of 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 below. The relationships of the second landing door 126, the third hanger roller 131, the first mark 9, the second mark 11, and the third mark 13 are the same as those of the first landing door 125, the second hanger roller 130, the first mark 8, the second mark 10, and the third mark 12, respectively.

[0069] The second hanger roller 130 in the state before wear is defined as a new second hanger roller 130A. In FIGS. 6 and 7, the state where the second hanger roller 130 is the new second hanger roller 130A is shown. Let the diameter of the new second hanger roller 130A be D. The circumference of the new second hanger roller 130A is π×D.

[0070] The radius of the second hanger roller 130 decreases due to wear. When the diameter of the second hanger roller 130 is equal to or less than the replacement reference value, the second hanger roller 130 needs to be replaced. The replacement reference value is a preset value. The second hanger roller 130 with a diameter equal to the replacement reference value is defined as a reference second hanger roller 130B. Therefore, when the diameter of the second hanger roller 130 is equal to or less than the diameter of the reference second hanger roller 130B, the second hanger roller 130 needs to be replaced due to wear. FIG. 8 shows the state where the second hanger roller 130 has become the reference second hanger roller 130B.

[0071] Let the difference between the radius of the new second hanger roller 130A and the radius of the reference second hanger roller 130B be a reference reduction dimension r, which is a preset value. Therefore, when the wear amount of the second hanger roller 130 is greater than the reference reduction dimension r, the second hanger roller 130 needs to be replaced due to wear.

[0072] 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 by π×2×r compared to the circumference of the new second hanger roller 130A.

[0073] When the position of the first landing door 125 is in the door-closed position, the position of the second hanger roller 130 is defined as the second hanger roller door-closed position. When the first landing door 125 moves from the door-closed position toward the door-open position and the second hanger roller 130 rotates by a preset amount of rotation, the position of the second hanger roller 130 is defined as the second hanger roller rotation position. In the elevator door device system according to Embodiment 2, the preset amount of rotation is one rotation. Note that the preset amount of rotation is not limited to one rotation and may be other amounts of rotation.

[0074] In FIGS. 7 and 8, a line B extending in the height direction passing through the center position of the second hanger roller 130 in the second hanger roller door-closed position and a line C extending in the height direction passing through the center position of the second hanger roller 130 in the second hanger roller rotation position are shown. The line B indicates the center position of the second hanger roller 130 in the second hanger roller door-closed position in the direction along the door rail 124. The line C indicates the center position of the second hanger roller 130 in the second hanger roller rotation position in the direction along the door rail 124.

[0075] The front side of the position of the second mark 10 when viewed along the direction in which the first landing door 125 moves from the door-closed position to the door-open position is defined as the door-open side with respect to the second mark 10. The rear side of the position of the second mark 10 when viewed along the direction in which the first landing door 125 moves from the door-closed position to the door-open position is defined as the door-closed side with respect to the second mark 10. The position of the first mark 8 is on the door-open side with respect to the position of the second mark 10 when the position of the second hanger roller 130 is in the second hanger roller door-closed position.

[0076] When the position of the second hanger roller 130 is at the second hanger roller door-closed position, the dimension between the first mark 8 and the second mark 10 in the direction 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 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.

[0077] In other words, when the wear amount 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 positions of the first mark 8 and the second mark 10 coincide with each other 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.

[0078] When the wear amount of the second hanger roller 130 is smaller 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-closed side than 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 is closer to the door-closed side than the position of the second mark 10 in the direction along the door rail 124, it can be determined that the wear amount of the second hanger roller 130 is smaller than the reference reduction dimension r.

[0079] When the wear amount 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. 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 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 wear amount of the second hanger roller 130 is greater than the reference reduction dimension r.

[0080] Other configurations in the elevator door device system according to Embodiment 2 are the same as those in the elevator door device system according to Embodiment 1.

[0081] Next, in the elevator door device system according to Embodiment 2, a procedure for detecting that it is necessary to replace the second hanger roller 130 due to wear will be described. First, the operator sets the position of the first landing door 125 to the door closed position.

[0082] After that, the operator moves the position of the first landing door 125 from the door closed position toward the door open position and rotates the second hanger roller 130 by a preset rotation amount, that is, one full rotation. At this time, the operator arranges the second mark 10 and the third mark 12 to be in positions that coincide with each other in the direction along the door rail 124.

[0083] After that, the operator visually checks the positional relationship between the first mark 8 and the second mark 10 in the direction along the door rail 124. When the position of the first mark 8 is closer to the door closed side than the position of the second mark 10 in the direction along the door rail 124, the wear amount of the second hanger roller 130 is smaller than the reference reduction dimension r. In this case, the operator detects that it is not necessary to replace the second hanger roller 130 due to wear.

[0084] On the one hand, when the position of the first mark 8 coincides with the position of the second mark 10 in the direction along the door rail 124, the wear amount of the second hanger roller 130 coincides with the reference reduction dimension r. In this case, although the operator does not need to replace the second hanger roller 130 due to wear, it is detected that the timing for replacing the second hanger roller 130 is approaching.

[0085] On the other hand, when the position of the first mark 8 is on the door-opening side of the position of the second mark 10 in the direction along the door rail 124, the wear amount of the second hanger roller 130 is larger than the reference reduction dimension r. In this case, the operator detects that it is necessary to replace the second hanger roller 130 due to wear.

[0086] As described above, the elevator door device system according to Embodiment 2 includes a hanger case 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 case 123. The second hanger roller 130 is provided on the first landing door 125. The second hanger roller 130 rolls on the door rail 124 when the first landing door 125 moves between the door closed position and the door open position. The first mark 8 is provided on the hanger case 123. The second mark 10 is provided on the second hanger roller 130. The second mark 10 moves in a direction along the door rail 124 while rotating about the rotation axis of the second hanger roller 130 as the second hanger roller 130 rolls on the door rail 124. When the wear amount of the second hanger roller 130 is smaller 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 closed side than the position of the second mark 10 in the direction along the door rail 124. When the wear amount 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. When the wear amount of the second hanger roller 130 is larger 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 open side than the position of the second mark 10 in the direction along the door rail 124. According to this configuration, an operator can detect that it is necessary to replace the second hanger roller 130 due to wear.

[0087] In addition, in the elevator door device system according to Embodiment 2, the configuration in which a second mark is provided on each of the second hanger roller 130 and the third hanger roller 131 has been described. However, any configuration in which a 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 may be used. In this case, a first mark is provided on the hanger case 123 corresponding to the second mark.

[0088] Also, in the elevator door device system according to the second embodiment, the configuration for detecting that the hanger roller provided on the landing door needs to be replaced due to wear has been described. However, a configuration for detecting that the hanger roller provided on the car door needs to be replaced due to wear may also be used. In this case, a first mark is provided on the hanger case of the car door, and a second mark is provided on the hanger roller of the car door.

[0089] As described above, the elevator door device system according to each preferred embodiment has been described. However, the elevator door device system according to each of the above-described embodiments is not limited thereto. Various modifications and conversions can be made to the elevator door device system according to each of the above-described embodiments without departing from the scope described in the claims.

Description of Reference Numerals

[0090] 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 case, 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 First hanger roller (hanger roller), 118 Second hanger roller (hanger roller), 119 Third hanger roller (hanger roller), 120 Fourth hanger roller (hanger roller), 121 First operation part (operation part), 122 Second operation part (operation part), 123 Hanger case, 124 Door rail, 125 First landing door (elevator door), 126 Second landing door (elevator door), 127 First door hanger, 128 Second door hanger, 129 First hanger roller (hanger roller), 130 Second hanger roller (hanger roller), 130A New second hanger roller, 130B Standard second hanger roller, 131 Third hanger roller (hanger roller), 132 Fourth hanger roller (hanger roller), 501 Lever, 502 Rotation detection part, 601 Lever, 602 Rotation detection part.

Claims

1. A hanger case, A door rail provided on the hanger case, A hanger roller provided on the elevator door, which rolls on the door rail when the elevator door moves between a door-closed position and a door-open position, An operation part provided on the hanger roller, A switch provided on the hanger case, Comprising: The operation part moves in a direction along the door rail while rotating around the rotation axis of the hanger roller as the hanger roller rolls on the door rail, When the wear amount of the hanger roller is less than or equal to a preset value, the operation part does not operate the switch while the elevator door moves from the door-closed position to the door-open position, An elevator door device system in which when the wear amount of the hanger roller is greater than the preset value, the operation part operates the switch while the elevator door moves from the door-closed position to the door-open position.

2. A hanger case, A door rail provided on the hanger case, A hanger roller provided on the elevator door, which rolls on the door rail when the elevator door moves between a door-closed position and a door-open position, A first mark provided on the hanger case, A second mark provided on the hanger roller, Comprising: The second mark moves in a direction along the door rail while rotating around the rotation axis of the hanger roller as the hanger roller rolls on the door rail, When the wear amount of the hanger roller is smaller than a preset value and the elevator door moves from the door-closed position to the door-open position and the hanger roller rotates by a preset amount of rotation, the position of the first mark is on the door-closed side of the position of the second mark in the direction along the door rail, When the wear amount of the hanger roller coincides with the preset value and the elevator door moves from the door-closed position to the door-open position and the hanger roller rotates by the preset amount of rotation, the position of the first mark coincides with the position of the second mark in the direction along the door rail. An elevator door device system in which when the wear amount of the hanger roller is greater than the preset value and the elevator door moves from the door closed position toward the door open position and the hanger roller rotates by the preset rotation amount, the position of the first mark is closer to the door open side than the position of the second mark in the direction along the door rail.

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