Guide rail installation status monitoring device and guide rail installation method

Abstract

To provide a guide rail installation status monitoring device and guide rail installation method that enable the installation of guide rails to be carried out simply and appropriately. [Solution] The guide rail installation status monitoring device comprises a sensor, a measuring unit, and a display unit. The sensor is installed on the rail gauge, which adjusts the position of the guide rails based on a reference line suspended in the hoistway when installing the left and right guide rails of the elevator, and detects the two-dimensional position of the reference line. The measuring unit measures the amount of displacement of the rail gauge relative to the reference line based on the two-dimensional position of the reference line detected by the sensor. The display unit displays the amount of displacement of the rail gauge measured by the measuring unit.

Description

Technical Field

[0001] Embodiments of the present invention relate to a device for monitoring the installation state of a guide rail and a method for installing a guide rail.

Background Art

[0002] In an elevator in which a car travels along a guide rail, the bending of the guide rail causes vibration of the car during travel. Since passengers feel worse riding comfort as the vibration of the car increases, it is desirable to lay the guide rail in a straight line as much as possible. For this reason, in the installation work of the guide rail, after the rail standing process of fastening the rail bracket of the guide rail to the building is completed, an adjustment process of the guide rail, also called the centering process, is performed. By performing the centering process, the bending of the guide rail is reduced. In the centering process, the position of the guide rail is adjusted so as to be in a straight line with reference to a piano wire vertically suspended in the hoistway.

[0003] The conventional centering process has been performed manually using a centering jig called a rail gauge. Specifically, in the centering process, after loosening the bolts fastening the rail brackets, the left and right guide rails are clamped by clamp mechanisms provided at both ends of the rail gauge. By clamping the guide rails, the distance between the left and right guide rails is kept constant, and the center lines of the teeth of the left and right guide rails are made to coincide with each other. After clamping the guide rails, the notch provided in the centering plate attached to the rail gauge is aligned with the piano wire suspended in the hoistway. By aligning the notch with respect to the piano wire, the horizontal position of the guide rail is adjusted. After the horizontal position of the guide rail is adjusted, the bolts are re-fastened.

[0004] However, in the conventional centering process, it has been difficult to perform the installation work of the guide rail simply and appropriately because the position of the rail bracket had to be adjusted and fixed while visually checking the position between the piano wire and the notch each time. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 4-55276 [Overview of the project] [Problems that the invention aims to solve]

[0006] The embodiment aims to provide a guide rail installation status monitoring device and a guide rail installation method that enable the installation of guide rails to be carried out simply and appropriately. [Means for solving the problem]

[0007] The guide rail installation status monitoring device according to this embodiment comprises a sensor, a measuring unit, and a display unit. The sensor is installed on the rail gauge, which adjusts the position of the guide rails based on a reference line suspended in the hoistway during the installation of the left and right guide rails of the elevator, and detects the two-dimensional position of the reference line. The measuring unit measures the amount of displacement of the rail gauge relative to the reference line based on the two-dimensional position of the reference line detected by the sensor. The display unit displays the amount of rail gauge displacement measured by the measuring unit. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a perspective view showing a guide rail installation status monitoring device according to the first embodiment. [Figure 2] Figure 2 is an enlarged perspective view showing an installation status monitoring device according to the first embodiment. [Figure 3] Figure 3 is a block diagram showing an installation status monitoring device according to the first embodiment. [Figure 4] Figure 4 is a flowchart showing an example of the operation of the installation status monitoring device according to the first embodiment. [Figure 5]Figure 5 is a flowchart showing the alignment process in an example of the operation of the installation status monitoring device according to the first embodiment. [Figure 6] Figure 6 shows an example of the operation of the installation status monitoring device according to the first embodiment. [Figure 7] Figure 7 is an enlarged perspective view showing an installation status monitoring device according to a modified example of the first embodiment. [Figure 8] Figure 8 is a perspective view showing an installation status monitoring device according to the second embodiment. [Figure 9] Figure 9 is a block diagram showing an installation status monitoring device according to the second embodiment. [Figure 10] Figure 10 is a flowchart showing an example of the operation of the installation status monitoring device according to the second embodiment. [Figure 11] Figure 11 shows an example of the operation of the installation status monitoring device according to the second embodiment. [Figure 12] Figure 12 is a flowchart showing an example of the operation of the installation status monitoring device according to the first modification of the second embodiment. [Figure 13] Figure 13 is a flowchart showing an example of the operation of an installation status monitoring device according to a second modification of the second embodiment. [Modes for carrying out the invention]

[0009] Embodiments of the present invention will be described below with reference to the drawings. These embodiments are not intended to limit the present invention. In the drawings referenced in the embodiments, the same or similar reference numerals are used to denote identical parts or parts having similar functions, and repeated descriptions thereof are omitted.

[0010] (First Embodiment) As shown in Figure 1, the guide rail installation status monitoring device 1 according to the first embodiment is installed in a distributed manner on the rail gauge 3 and the gondola 5. The rail gauge 3 is a centering jig that adjusts the position of the left and right guide rails 2L and 2R based on the left and right piano wires 4L and 4R that are suspended in the hoistway when the left and right guide rails 2L and 2R of the elevator are installed. The left and right piano wires 4L and 4R are examples of reference lines. In Figure 1, the -Y direction is to the left and the Y direction is to the right. Also in Figure 1, the Z direction is upward and the -Z direction is downward. The left and right guide rails 2L and 2R are spaced apart in the Y direction. Also, the left and right guide rails 2L and 2R extend in the Z direction.

[0011] The gondola 5 is used by workers during the installation of the guide rails 2L and 2R, and can move up and down inside the elevator furnace along the guide rails 2L and 2R. The guide rails 2L and 2R are fixed to the side wall of the elevator shaft (i.e., the building side) via multiple rail brackets 21 that are spaced apart in the vertical direction. Each rail bracket 21 is fastened to the side wall of the elevator shaft using bolts. Figure 1 shows a typical arrangement of one row of rail brackets 21 on each side.

[0012] The installation state monitoring device 1 includes a left position sensor 11L that detects the two-dimensional position of the left piano wire 4L at the left end of the rail gauge 3. Further, the installation state monitoring device 1 includes a right position sensor 11R that detects the two-dimensional position of the right piano wire 4R at the right end of the rail gauge 3. The left position sensor 11L and the right position sensor 11R are examples of sensors. The left position sensor 11L and the right position sensor 11R output detection signals corresponding to the two-dimensional positions of the piano wires 4L and 4R in a non-contact manner. For example, the left position sensor 11L irradiates the left piano wire 4L with laser light and outputs a detection signal corresponding to the two-dimensional position of the left piano wire 4L based on the reflected light of the irradiated laser light from the piano wire 4L. Also, the right position sensor 11R irradiates the right piano wire 4R with laser light and outputs a detection signal corresponding to the two-dimensional position of the right piano wire 4R based on the reflected light of the irradiated laser light from the piano wire 4R. In the example shown in FIG. 2, the two-dimensional positions of the piano wires 4L and 4R are the positions of the piano wires 4L and 4R in the X direction and the Y direction, that is, the positions of the piano wires 4L and 4R on the horizontal plane.

[0013] The installation state monitoring device 1 further includes a control device 12 installed on the floor surface of the gondola 5. The control device 12 is an example of a measurement unit. In the example shown in FIG. 1, the control device 12 is installed at a corner of the floor surface of the gondola 5 so as not to interfere with the installation work by the operator.

[0014] The control device 12 measures the displacement amount of the rail gauge 3 with respect to the left piano wire 4L based on the two-dimensional position of the left piano wire 4L detected by the left position sensor 11L. The control device 12 measures the displacement amount of the rail gauge 3 with respect to the right piano wire 4R based on the two-dimensional position of the right piano wire 4R detected by the right position sensor 11R.

[0015] For example, the control device 12 calculates the two-dimensional position of the left piano wire 4L based on the detection signal output from the left position sensor 11L. Then, the control device 12 calculates the difference between the calculated two-dimensional position of the left piano wire 4L and the reference position on the left end of the rail gauge 3 as the displacement amount of the rail gauge 3 with respect to the left piano wire 4L. Further, the control device 12 calculates the two-dimensional position of the right piano wire 4R based on the detection signal output from the right position sensor 11R. Then, the control device 12 calculates the difference between the calculated two-dimensional position of the right piano wire 4R and the reference position on the right end of the rail gauge 3 as the displacement amount of the rail gauge 3 with respect to the right piano wire 4R.

[0016] As shown in FIG. 2, clamp mechanisms 31 for clamping the rail gauge 3 to the guide rails 2L and 2R are provided at both the left and right ends of the rail gauge 3. A centering plate 32 along the XY plane is attached to the clamp mechanism 31. The centering plate 32 is provided with a notch 32a having a triangular inner periphery. The reference positions on both the left and right ends of the rail gauge 3 may be the center positions of the notch 32a (i.e., the center positions of the end openings of the triangular notch 32a). That is, the control device 12 may calculate the difference between the two-dimensional position of the left piano wire 4L and the center position of the notch 32a of the centering plate 32 provided on the left end side of the rail gauge 3 as the displacement amount of the rail gauge 3 with respect to the left piano wire 4L. Further, the control device 12 may calculate the difference between the two-dimensional position of the right piano wire 4R and the center position of the notch 32a of the centering plate 32 provided on the right end side of the rail gauge 3 as the displacement amount of the rail gauge 3 with respect to the right piano wire 4R. Hereinafter, the centering plate 32 provided on the left end side of the rail gauge 3 is referred to as the left centering plate 32. Also, the centering plate 32 provided on the right end side of the rail gauge 3 is referred to as the right centering plate 32.

[0017] The control device 12 includes, for example, a processor. The processor is composed of, for example, a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), or an Application Specific Integrated Circuit (ASIC). The processor performs the functions of the control device 12 by reading and executing a program stored in the memory unit 15, which will be described later.

[0018] Furthermore, the installation condition monitoring device 1 includes a display unit 13 installed on the gondola 5. In the example shown in Figure 1, the display unit 13 is installed near the handrail of the gondola 5, with its display surface facing inward towards the gondola 5. The display unit 13 displays the displacement of the rail gauge 3, measured by the control device 12, on an XY graph. The display unit 13 is, for example, a tablet. The display unit 13 may also consist of a terminal other than a tablet, such as a personal computer or a mobile phone. The display unit 13 may display the displacement of the rail gauge 3 on a scatter plot instead of, or in conjunction with, the XY graph.

[0019] As shown in Figure 3, the installation status monitoring device 1 further comprises an operation unit 14 and a storage unit 15. The left position sensor 11L, the right position sensor 11R, the display unit 13, the operation unit 14, and the storage unit 15 are connected to the control device 12 in a communication manner. The communication method may be wired communication, but wireless communication is preferred to prevent workers from tripping over communication cables.

[0020] The operation unit 14 accepts input operations from the operator to input information such as the height of the rail bracket 21 and instructions for the operation of the control device 12. The operation unit 14 may also accept input operations from the operator through an operation screen displayed on the display unit 13.

[0021] The storage unit 15 stores programs and data used in the processing of the control device 12. The storage unit 15 is composed of, for example, semiconductor memory elements such as ROM (Read Only Memory), RAM (Random Access Memory), and flash memory, as well as a hard disk and an optical disc.

[0022] Next, an example of the operation of the installation status monitoring device 1 will be described. In the installation work of the guide rails 2L and 2R, first, the rail erection process is carried out. In the rail erection process, the guide rails 2L and 2R are fixed by fastening the rail brackets 21 of the guide rails 2L and 2R to the side wall of the elevator shaft using bolts. After the rail erection process is completed, the centering process is carried out. In the centering process, the bolts fastening the rail brackets 21 are loosened, and the left and right guide rails 2L and 2R are fixed in the vicinity of the rail brackets 21 (i.e., at the position corresponding to the rail brackets 21) using clamping mechanisms 31 provided at both ends of the rail gauge 3.

[0023] After clamping the guide rails 2L and 2R, the control device 12 performs zero adjustment of the position sensors 11L and 11R, as shown in Figure 4 (step S1). In the example shown in Figure 6, the control device 12 performs zero adjustment in response to the pressing of the initialization button 70 on the operation screen 7 displayed on the display unit 13. During zero adjustment, for example, the detected values ​​of the position sensors 11L and 11R when the initialization button 70 is pressed are set to zero.

[0024] After zeroing the position sensors 11L and 11R, as shown in Figure 4, the operation unit 14 inputs height information (i.e., Z-direction information) of the rail bracket 21 corresponding to the fixed position of the rail gauge 3 to the control device 12 in response to an input operation by the operator. The control device 12 records the input height information in the storage unit 15. In the example shown in Figure 6, the height information is input to the input field 71 on the operation screen 7 displayed on the display unit 13. The input field 71 can accept input of the rail bracket number (No.) indicating which rail bracket 21 corresponds to the fixed position of the rail gauge 3. The specific manner in which the height information of the rail bracket 21 is input is not limited to the example shown in Figure 6. For example, the height information of the rail bracket 21 may be input by referring to the installation information of the rail bracket 21 stored in the storage unit 15 in advance and inputting the specific height. Also, in the example shown in Figure 6, the control device 12 can reset the height information entered in the input field 71 in response to the reset button 76 being pressed.

[0025] After inputting the height information for the rail bracket 21, the alignment process is performed as shown in Figure 4 (step S3).

[0026] As shown in Figure 5, in the centering operation, first, the position sensors 11L and 11R detect the two-dimensional positions of the piano wires 4L and 4R (step S31). In the example shown in Figure 6, the detection of the two-dimensional positions of the piano wires 4L and 4R by the position sensors 11L and 11R is started when the start button 72 on the operation screen 7 is pressed.

[0027] In detecting the two-dimensional positions of piano wires 4L and 4R, for example, the left position sensor 11L uses laser light to detect the position of the left piano wire 4L in the X and Y directions. The right position sensor 11R also uses laser light to detect the position of the right piano wire 4R in the X and Y directions.

[0028] After the two-dimensional positions of the piano wires 4L and 4R are detected, as shown in Figure 5, the control device 12 (i.e., the measuring unit) measures the XY displacement of the rail gauge 3 relative to the piano wires 4L and 4R based on the detected two-dimensional positions of the piano wires 4L and 4R (step S32). Specifically, the control device 12 calculates the difference between the two-dimensional position of the left piano wire 4L and the two-dimensional position of the center of the notch 32a provided in the left centering plate 32 as the XY displacement of the rail gauge 3 relative to the left piano wire 4L. The control device 12 also calculates the difference between the two-dimensional position of the right piano wire 4R and the two-dimensional position of the center of the notch 32a provided in the right centering plate 32 as the XY displacement of the rail gauge 3 relative to the right piano wire 4R.

[0029] After the XY displacement of the rail gauge 3 is measured, the display unit 13 displays the XY displacement of the rail gauge 3 on an XY graph according to the control of the control device 12, as shown in Figure 5 (step S33). The control device 12 may also display the XY displacement on the XY graph by converting the XY displacement of the rail gauge 3 from values ​​in the sensor coordinate system to values ​​in the display coordinate system. In the example shown in Figure 6, the XY graph is displayed on the operation screen 7. The XY graph includes a left XY graph 73L and a right XY graph 73R. The XY graph further includes a display field 74L for coordinate values ​​on the left and a display field 74R for coordinate values ​​on the right.

[0030] In the example shown in Figure 6, the display unit 13 displays the intersection point PL of the X and Y coordinate axes on the left XY graph 73L, representing the two-dimensional position of the center of the notch 32a provided in the left centering plate 32 (i.e., the reference position on the left end of the rail gauge 3). The display unit 13 also displays a dot DL on the left XY graph 73L, indicating the XY coordinates (XL,YL) of the left piano wire 4L. The difference between the intersection point PL and the dot DL corresponds to the XY displacement on the left side of the rail gauge 3. The operator can intuitively grasp the XY displacement on the left side of the rail gauge 3 based on how far the dot DL is from the intersection point PL. Furthermore, as shown in Figure 6, the display unit 13 displays the coordinate values ​​(0,0) of the center of the notch 32a provided in the left centering plate 32 and the XY coordinate values ​​(XL,YL) of the left piano wire 4L in the coordinate value display field 74L on the left side. By displaying coordinate values, the operator can accurately determine the XY displacement on the left side of rail gauge 3.

[0031] Furthermore, in the example shown in Figure 6, the display unit 13 displays the intersection point PR of the X and Y coordinate axes on the right-hand XY graph 73R as the two-dimensional position of the center of the notch 32a provided in the right-hand centering plate 32 (i.e., the reference position on the right end of the rail gauge 3). The display unit 13 also displays a dot DR on the right-hand XY graph 73R, indicating the XY coordinates (XR,YR) of the right-hand piano wire 4R. The difference between the intersection point PR and the dot DR corresponds to the XY displacement on the right side of the rail gauge 3. The operator can intuitively grasp the XY displacement on the right side of the rail gauge 3 based on how far the dot DR is from the intersection point PR. Also, as shown in Figure 6, the display unit 13 displays the coordinate values ​​(0,0) of the center of the notch 32a provided in the right-hand centering plate 32 and the XY coordinate values ​​(XR,YR) of the right-hand piano wire 4R in the coordinate value display field 74R on the right side. By displaying coordinate values, the operator can accurately determine the XY displacement on the right side of rail gauge 3.

[0032] After the XY displacement of the rail gauge 3 is displayed on the XY graph, as shown in Figure 5, the worker determines whether the XY displacement is within a predetermined value based on the XY graph (step S34). If the XY displacement is within a predetermined value (step S34: YES) and the rail bracket 21 has been retightened (step S35: YES), the alignment work is completed. Re-tightening of the rail bracket 21 means that the bolts of the rail bracket 21, which were loosened at the start of the alignment process, have been tightened again.

[0033] On the other hand, if the XY displacement is not within a predetermined value (step S34: NO), the operator adjusts the position of the rail bracket 21 (step S37). The position of the rail bracket 21 is adjusted, for example, by hammering the rail bracket 21 or by gouging the rail bracket 21 with a tool. After adjusting the position of the rail bracket 21, the detection of the two-dimensional positions of the piano wires 4L and 4R is repeated (step S31).

[0034] Furthermore, if the XY displacement is within a predetermined value (Step S34: YES) and the rail bracket 21 has not been re-fastened (Step S35: NO), the worker re-fastens the rail bracket 21 (Step S36). After re-fastening the rail bracket 21, the detection of the two-dimensional positions of the piano wires 4L and 4R is repeated (Step S31).

[0035] After the alignment work is completed, as shown in Figure 4, the control device 12 records alignment information, which associates the height information of the rail bracket 21 with the XY displacement amount, in the storage unit 15 (step S4). In the example shown in Figure 6, the control device 12 records the alignment information in response to the pressing of the record button 75 on the operation screen 7. The alignment information may also be recorded from the control device 12 to an external storage device of the installation status monitoring device 1. The alignment information recorded in the external storage device may be used for operation commands of a work robot that supports the installation work, etc.

[0036] After recording the alignment information, the control device 12 displays the recorded alignment information on the display unit 13, as shown in Figure 4 (step S5). In the example shown in Figure 6, the display unit 13 displays the alignment information in the display area 77 on the operation screen 7. The alignment information displayed on the display area 77 may be displayed as the shapes of the guide rails 2L and 2R. In addition, the alignment information displayed on the display area 77 may be added each time the number of rail brackets 21 for which alignment work has been performed increases.

[0037] After the alignment information is displayed, if the alignment work is completed for all rail brackets 21 that are to be aligned (Step S6: YES), as shown in Figure 4, the alignment process is terminated. On the other hand, if the alignment work is not completed for all rail brackets 21 that are to be aligned (Step S6: NO), the operator removes the rail gauge 3 and moves the gondola 5 to the position corresponding to the next rail bracket 21 to be aligned. Then, the operator loosens the bolts of the next rail bracket 21 to be aligned and fixes the rail gauge 3 to the guide rails 2L and 2R. After fixing the rail gauge 3, the operator inputs the height information of the next rail bracket 21 to be aligned (Step S2). After that, the process from Step S3 onwards is repeated.

[0038] Furthermore, the position sensors 11L and 11R may also detect the two-dimensional positions of the piano wires 4L and 4R at locations other than the vicinity of the rail bracket 21.

[0039] As described above, in the first embodiment, the installation monitoring device 1 comprises position sensors 11L, 11R, a control device 12 (i.e., a measuring unit), and a display unit 13. The position sensors 11L, 11R are provided on the rail gauge 3, which adjusts the position of the left and right guide rails 2L, 2R based on piano wires 4L, 4R suspended in the hoistway during the installation of the elevator, and detect the two-dimensional position of the piano wires 4L, 4R. The control device 12 measures the XY displacement of the rail gauge 3 relative to the piano wires 4L, 4R based on the two-dimensional position of the piano wires 4L, 4R detected by the position sensors 11L, 11R. The display unit 13 displays the XY displacement of the rail gauge 3 measured by the control device 12 on an XY graph.

[0040] Therefore, since the operator can perform the alignment work based on the XY displacement of the rail gauge 3 displayed on the XY graph, the installation work of the guide rails 2L and 2R can be carried out simply and appropriately.

[0041] Furthermore, in the first embodiment, the position sensors 11L and 11R detect the two-dimensional positions of the piano wires 4L and 4R when the rail gauge 3 is positioned at a location corresponding to the rail bracket 21 of the guide rails 2L and 2R.

[0042] This allows for more appropriate installation of the guide rails 2L and 2R based on the two-dimensional positions of the piano wires 4L and 4R at the rail brackets 21, which have a significant impact on the installation state of the guide rails 2L and 2R.

[0043] (Modified version of the first embodiment) Figure 2 illustrates an example in which the two-dimensional positions of piano wires 4L and 4R are detected by position sensors 11L and 11R, one on the left and one on the right. In contrast, as shown in Figure 7, the left position sensor 11L may include an X-direction sensor 11LX and a Y-direction sensor 11LY arranged orthogonally to each other. The X-direction sensor 11LX detects the position of the piano wire 4L in the X direction non-contactually, for example, using a laser beam. The Y-direction sensor 11LY detects the position of the piano wire 4L in the Y direction non-contactually, for example, using a laser beam. The right position sensor 11R may have a similar configuration to the left position sensor 11L.

[0044] As shown in the example in Figure 7, the two-dimensional positions of piano wires 4L and 4R can be detected by combining the detection results of the position in the X direction and the position detection results in the Y direction.

[0045] (Second embodiment) Next, we will describe a second embodiment that outputs an alarm based on the inclination of the rail gauge 3, focusing on the differences from the embodiment described above. As shown in Figure 8, the installation condition monitoring device 1 according to the second embodiment further includes a tilt sensor 17 in addition to the configuration shown in Figure 1. The tilt sensor 17 is an example of a second sensor. Also, as shown in Figure 9, the installation condition monitoring device 1 further includes an output unit 16 in addition to the configuration shown in Figure 3.

[0046] The tilt sensor 17 detects the tilt of the rail gauge 3. For example, the tilt sensor 17 outputs a detection signal corresponding to the tilt of the rail gauge 3 with respect to the horizontal plane. The control device 12 calculates the tilt of the rail gauge 3 based on the detection signal output from the tilt sensor 17. The tilt sensor 17 may be composed of, for example, a gyro sensor.

[0047] The output unit 16 outputs an alarm to notify the operator that the rail gauge 3 is tilted too much when the tilt of the rail gauge 3 detected by the tilt sensor 17 exceeds a threshold. The output unit 16 outputs the alarm, for example, by displaying an image on the display unit 13. The output unit 16 may also output the alarm by making a notification, i.e., by outputting an audible message.

[0048] Next, referring to Figure 10, an example of the operation of the installation status monitoring device 1 according to the second embodiment will be explained, focusing on the differences from Figure 5. In the second embodiment, when the centering process is performed, the control device 12 performs zero adjustment of the tilt sensor 17 in addition to zero adjustment of the position sensors 11L and 11R. In the example shown in Figure 11, the control device 12 performs zero adjustment in response to the pressing of the initialization button 78 on the operation screen 7 displayed on the display unit 13. In zero adjustment, the detected value of the tilt sensor 17 when the initialization button 78 is pressed is set to zero.

[0049] As shown in Figure 10, in the second embodiment, the tilt sensor 17 starts detecting the tilt of the rail gauge 3 after it has started detecting the two-dimensional positions of the piano wires 4L and 4R (step S35). Note that the start of detecting the two-dimensional positions of the piano wires 4L and 4R and the start of detecting the tilt of the rail gauge 3 may occur before or after each other, or they may occur simultaneously. In the example shown in Figure 11, the tilt sensor 17 starts detecting the tilt of the rail gauge 3 in response to the start button 79 being pressed.

[0050] Furthermore, as shown in Figure 10, in addition to displaying the XY displacement of the rail gauge 3 on the XY graph, the display unit 13 also displays the inclination of the rail gauge 3 detected by the inclination sensor 17 (step S331). In the example shown in Figure 11, the display unit 13 displays the inclination of the rail gauge 3 in the X and Y directions on the display area 710 on the operation screen 7. Specifically, the display unit 13 displays a reference point P where the inclination in both the X and Y directions is zero (0°,0°), and dots D indicating the inclinations in the X and Y directions (A°,B°) detected by the inclination sensor 17. The operator can intuitively grasp the direction and amount of the inclination of the rail gauge 3 based on how far and in which direction the dots D are from the reference point P. Also, in the example shown in Figure 11, the display unit 13 displays the numerical value of the inclination of the rail gauge 3 in the X direction (A°) and the numerical value of the inclination in the Y direction (B°) in the display field 711 for the numerical value of the inclination. The display of numerical values ​​allows the worker to accurately determine the inclination of the rail gauge 3.

[0051] As shown in Figure 10, the control device 12 determines whether the inclination of the rail gauge 3 detected by the inclination sensor 17 exceeds a threshold (step S38). If the inclination of the rail gauge 3 exceeds the threshold (step S38: YES), the control device 12 causes the output unit 16 to output an alarm (step S39). After the alarm is output, the operator adjusts the inclination of the rail gauge 3 (step S310). After adjusting the inclination of the rail gauge 3, the detection of the inclination of the rail gauge 3 is repeated (step S35). On the other hand, if the inclination of the rail gauge 3 does not exceed the threshold (step S38: NO), the control device 12 does not cause the output unit 16 to output an alarm. If the output unit 16 does not output an alarm, the processes from steps S34 to S37 are carried out.

[0052] As shown in Figure 11, when displaying centering information (step S5), the display unit 13 displays centering information for the tilt sensor 17 on the display area 712, in addition to displaying centering information for the position sensors 11L and 11R on the display area 77. The centering information for the tilt sensor 17 is information that associates height information with the tilt of the rail gauge 3.

[0053] As described above, in the second embodiment, the output unit 16 outputs an alarm when the inclination of the rail gauge 3 detected by the inclination sensor 17 exceeds a threshold.

[0054] This allows the worker to adjust the inclination of the rail gauge 3 until the alarm stops being emitted, making the installation of the guide rails 2L and 2R even simpler and more efficient.

[0055] (First modified example of the second embodiment) Next, we will describe a first modification of the second embodiment, which determines the effectiveness of the XY displacement of the rail gauge 3 based on the inclination of the rail gauge 3, focusing on the differences from the embodiment described above.

[0056] In the example shown in Figure 12, the control device 12 (i.e., the determination unit) displays the XY displacement and inclination of the rail gauge 3 (step S331), and then determines whether the XY displacement is valid based on the inclination of the rail gauge 3 (step S311). For example, the control device 12 determines that the XY displacement is valid if the inclination of the rail gauge 3 is below a threshold. The control device 12 also determines that the XY displacement is invalid if the inclination of the rail gauge 3 exceeds a threshold.

[0057] If the XY displacement is invalid (step S311: NO), the control device 12 outputs an alarm to the output unit 16. The control device 12 also prohibits the operator from requesting the recording of the XY displacement (step S3112). For example, the control device 12 prohibits the request to record the XY displacement by hiding or disabling the recording button 75 shown in Figure 11. After the alarm is output and the request to record the XY displacement is prohibited, the operator adjusts the inclination of the rail gauge 3 (step S310).

[0058] On the other hand, if the XY displacement amount is valid (step S311: YES), the control device 12 does not output an alarm to the output unit 16, nor does it prohibit the request to record the XY displacement amount. In this case, steps S34 to S37 are then performed.

[0059] As shown in the example in Figure 12, based on the effectiveness of the XY displacement of the rail gauge 3 determined based on the inclination of the rail gauge 3, it is possible to output an alarm or prohibit requests to record the XY displacement, thereby enabling more appropriate installation of the guide rails 2L and 2R.

[0060] (Second modification of the second embodiment) Next, a second modified example of the second embodiment, which corrects the XY displacement of the rail gauge 3 based on the inclination of the rail gauge 3, will be described, focusing on the differences from the embodiment described above.

[0061] In the example shown in Figure 13, the control device 12 (i.e., the correction unit) corrects the XY displacement amount based on the inclination of the rail gauge 3 (step S313) if the XY displacement amount is invalid (step S311: NO). For example, the control device 12 corrects the XY displacement amount so that the greater the inclination of the rail gauge 3, the greater the XY displacement amount. After the XY displacement amount has been corrected, steps S34 to S37 are performed.

[0062] As shown in the example in Figure 13, the XY displacement can be corrected based on the effectiveness of the XY displacement of the rail gauge 3, which is determined based on the inclination of the rail gauge 3. This makes the installation of the guide rails 2L and 2R even simpler and more appropriate.

[0063] While several embodiments of the present invention have been described, these embodiments are presented as examples only and are not intended to limit the scope of the invention. These embodiments can be carried out in a variety of other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims and their equivalents. [Explanation of symbols]

[0064] 1 Installation status monitoring device, 11L Left position sensor, 11R Right position sensor, 12 Control device, 13 Display unit, 16 Output unit, 17 Tilt sensor, 2L Left guide rail, 2R Right guide rail, 3 Rail gauge

Claims

1. A sensor is provided in a rail gauge that adjusts the position of the left and right guide rails of an elevator based on a reference line suspended in the hoistway during installation of the guide rails, and detects the two-dimensional position of the reference line. A measuring unit that measures the amount of displacement of the rail gauge relative to the reference line based on the two-dimensional position of the reference line detected by the sensor, A display unit that displays the amount of displacement of the rail gauge measured by the measuring unit, A guide rail installation status monitoring device equipped with [a specific feature].

2. The installation condition monitoring device according to claim 1, wherein the display unit displays the amount of displacement of the rail gauge measured by the measuring unit on at least one of the XY graph and the scatter plot.

3. The installation condition monitoring device according to claim 1, wherein the sensor detects the two-dimensional position of the reference line when at least the rail gauge is positioned to correspond to the bracket of the guide rail.

4. A second sensor for detecting the inclination of the rail gauge, An output unit that outputs an alarm when the inclination of the rail gauge detected by the second sensor exceeds a threshold, The installation status monitoring device according to any one of claims 1 to 3, further comprising the above.

5. The installation condition monitoring device according to claim 4, further comprising a determination unit that determines whether or not the amount of displacement of the rail gauge measured by the measuring unit is valid based on the inclination of the rail gauge detected by the second sensor.

6. The installation condition monitoring device according to claim 4, further comprising a correction unit that corrects the amount of displacement of the rail gauge measured by the measuring unit based on the inclination of the rail gauge detected by the second sensor.

7. When installing the left and right guide rails of an elevator, a sensor installed on the rail gauge adjusts the position of the guide rails based on a reference line suspended in the hoistway, thereby detecting the two-dimensional position of the reference line. The measuring unit measures the amount of displacement of the rail gauge relative to the reference line based on the two-dimensional position of the reference line detected by the sensor. The display unit displays the amount of displacement of the rail gauge measured by the measurement unit. The position of the guide rail is adjusted so that the displacement amount of the rail gauge displayed by the display unit falls within the set range. A method for installing a guide rail that includes the following features.

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