Elevator wall surface measuring device

Abstract

This helps to reduce errors in measuring the dimensions of pit walls. [Solution] The measuring device 1 is a measuring device for measuring the wall dimensions of a pit provided in the elevator shaft. The measuring device has a lifting guide section 2 that is detachably fixed to a long member extending vertically from the floor surface of the pit and guides the lifting section 4, on which the measuring unit 7 is installed, so that it can move vertically. The lifting guide section 2 is fixed so that the measuring unit 7 faces the wall surface of the pit, and the lifting section 4 engages with the lifting guide section 2 and includes a drive section that moves the lifting section 4 up and down along the lifting guide section 2. The measuring unit 7 measures the wall dimensions of the pit non-contact.

Description

Technical Field

[0001] The present disclosure relates to an elevator wall measurement device, particularly to the measurement of the wall dimensions of an elevator hoistway.

Background Art

[0002] Conventionally, during elevator replacement or renovation work, as a preparatory step, the situation inside the elevator hoistway is accurately grasped, and the dimensions of each part required for drawing creation and the like are measured. This work is carried out by a surveyor actually measuring the dimensions of each part inside the hoistway from the pit or above the car using a laser distance meter or a measurer.

[0003] Patent Document 1 discloses an elevator hoistway dimension measurement device equipped with a dimension measurement device for measuring the shape of each part of the hoistway above the car, which enables an operator to easily and safely measure the shape inside the hoistway and accurately grasp it.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] As described above, measuring the dimensions of the hoistway walls is an important task in elevator renovation work. In particular, measuring the dimensions of the pit walls is extremely important when converting from a hydraulic elevator to a rope elevator. Traditionally, pit wall dimensions have been measured manually by workers who descend into the pit. However, depending on the skill level of the workers, there is a problem in that errors may occur in measuring the dimensions of the pit walls. Furthermore, even with the elevator hoistway dimension measuring device described in Patent Document 1, the measuring device is installed at the top of the elevator car, so it is not possible to measure the dimensions of the pit walls, and therefore this problem cannot be solved. [Means for solving the problem]

[0006] The measuring device according to the present invention is a measuring device for measuring the wall dimensions of a pit provided in an elevator shaft. The measuring device is detachably fixed to a long member extending vertically from the floor surface of the pit and has a lifting guide section that guides the lifting section, on which the measuring section is installed, so that it can move vertically. The lifting guide section is fixed so that the measuring section faces the wall surface of the pit, and the lifting section includes a drive section that engages with the lifting guide section and moves the lifting section up and down along the lifting guide section. The measuring section is characterized by measuring the wall dimensions of the pit without contact. [Effects of the Invention]

[0007] According to the measuring device of the present invention, errors in measuring the dimensions of pit walls can be suppressed. [Brief explanation of the drawing]

[0008] [Figure 1A] This is a schematic diagram illustrating the arrangement of wire ropes in an elevator according to the first embodiment. [Figure 1B] This is a schematic cross-sectional view illustrating the elevator pit according to the first embodiment. [Figure 2] This is a perspective view illustrating a measuring device according to the first embodiment. [Figure 3] This is a rear view illustrating a measuring device according to the first embodiment. [Figure 4] This diagram illustrates the installation location of the measuring device according to the first embodiment. [Figure 5] This is a diagram illustrating the elevator pit according to the second embodiment. [Figure 6] This diagram illustrates the installation location of the measuring device according to the second embodiment.

[0009] Hereinafter, embodiments of the measuring device according to the present invention will be described in detail with reference to the drawings. The embodiments described below are merely examples, and the present invention is not limited to these embodiments. Furthermore, forms obtained by selectively combining the multiple embodiments and modifications described below are included in the present invention.

[0010] The elevator 100 according to the first embodiment will be described in detail with reference to Figures 1A and 1B. Figure 1A is a schematic diagram illustrating the arrangement of the wire rope 21 of the elevator 100. Figure 1B is a schematic cross-sectional view illustrating the pit 30 of the elevator 100. Note that in Figure 1A, the positional relationships of each component have been adjusted for clarity. The arrangement of each component will be explained in the specification and in Figure 1B, etc.

[0011] Elevator 100 is a lifting device that transports people and goods by having a car 10 for carrying people and goods, and by having the car 10 move up and down within the hoistway 20 and stop at the landings on each floor. The car 10 is provided with a car door 11 that separates the car 10 from the hoistway 20. The landings are provided with landing doors 12 that separate the landings from the hoistway 20.

[0012] The elevator 100 is equipped with a hoisting machine 40 as a drive device for raising and lowering the elevator car 10. The elevator car 10 is guided to move vertically by two elevator car guide rails 31 provided on both the left and right sides in Figures 1A and 1B, flanking the elevator car 10. A counterweight 50 is used for the vertical movement of the elevator car 10. The counterweight 50 is guided to move vertically by two counterweight guide rails 32 provided on either side of the counterweight 50. Note that in Figure 1A, the counterweight 50, hoisting machine 40, and elevator car 10 are shown side by side. However, Figure 1A is a schematic diagram to make the wire rope winding path easier to understand. In reality, as shown in Figure 1B, the hoisting machine 40 and counterweight 50 are arranged side by side in the depth direction of the elevator shaft 20 (up and down direction in Figure 1B) on the side of the elevator car 10's lifting path (left side in Figure 1B). The two counterweight guide rails 32 are positioned apart from the counterweight 50 on both sides in the depth direction of the elevator shaft 20.

[0013] A wire rope 21 is provided inside the elevator shaft 20, which is wound around the hoisting machine 40, etc. One end of the wire rope 21 is supported by a rope stopper member 22 located above the elevator car guide rail 31 that is furthest from the hoisting machine 40. The other end of the wire rope 21 is supported by a counterweight return stopper member 23 located above the two counterweight guide rails 32.

[0014] The wire rope 21 is wound between the hoisting machine 40 and the rope stopper member 22, around the return wheel 24 located on the upper side of the elevator car guide rail 31 on the side closer to the hoisting machine 40, and around the elevator car suspension wheel 25 located on the outer bottom of the elevator car 10. Furthermore, the wire rope 21 is wound between the hoisting machine 40 and the counterweight return wheel stopper member 23, around the counterweight return wheel 26 and around the counterweight suspension wheel 27 located on the counterweight 50.

[0015] The elevator 100 is a machine-room-less elevator. In the machine-room-less elevator, the hoist 40, the lowered counterweight 50, and the control panel 60 are installed in the pit 30. The pit 30 is the area from the landing on the first floor of the elevator 100 to the floor surface of the hoistway 20. In the example shown in FIG. 1B, in the pit 30, the hoist 40 and the counterweight 50 are installed on the side surface side of the car 10. Further, the control panel 60 is installed on the back side of the car 10 in the pit 30.

[0016] As shown in FIGS. 1A and 1B, the elevator 100 includes a car guide rail 31 for guiding the ascent and descent of the car 10 and a counterweight guide rail 32 for guiding the ascent and descent of the counterweight 50. The car guide rail 31 and the counterweight guide rail 32 are rails extending vertically from the floor surface of the pit 30 to the ceiling of the hoistway 20.

[0017] The measuring device 1 according to the first embodiment will be described in detail with reference to FIGS. 2 and 3. FIG. 2 is a perspective view for explaining the measuring device 1. FIG. 3 is a rear view for explaining the measuring device 1.

[0018] The measuring device 1 is a measuring device for measuring the dimensions of the wall surface 33 of the pit 30 provided in the hoistway 20 of the elevator 100. The measuring device 1 is detachably fixed to a long member extending vertically from the floor surface of the pit 30 and has a lifting guide portion 2 for guiding the lifting portion 4 provided with the measuring portion 7 to move vertically. As will be described in detail later, the lifting guide portion 2 is provided so that the measuring portion 7 faces the wall surface 33 of the measurement target area.

[0019] The long member is, for example, the above-mentioned car guide rail 31 and counterweight guide rail 32. Further, the long member may be a hydraulic jack for raising and lowering the car 10 in a hydraulic elevator. In the example shown in FIG. 2, the lifting guide portion 2 is fixed to the side surface of one of the two car guide rails 31 provided in the hoistway 20, on the side opposite to the car 10.

[0020] The lifting guide part 2 guides the lifting of the lifting part 4 provided with the measuring part 7. The shape and material of the lifting guide part 2 are not particularly limited as long as the lifting part 4 can be guided to move freely in the vertical direction. The shape of the lifting guide part 2 is, for example, as shown in FIG. 2, plate-shaped, and a rectangular through-hole 2b extending in the vertical direction is formed in the central region of the surface. A drive part 5 provided on the lifting part 4 engages with the through-hole 2b of the lifting guide part 2. Also, it may be a groove or the like extending in the vertical direction instead of the through-hole 2b. The material of the lifting guide part 2 may be, for example, made of metal such as stainless steel.

[0021] As shown in FIG. 2, the lifting guide part 2 may include a position adjustment part 2a extending in the lateral direction so as to be separated from the car guide rail 31. The position adjustment part 2a is joined to the lifting guide part 2 by welding or the like.

[0022] As shown in FIG. 2, the position adjustment part 2a extends in the lateral direction from the car guide rail 31, so that the position of the part of the lifting guide part 2 where the lifting part 4 is installed can be adjusted. That is, the position measured by the measuring part 7 can be adjusted. On the other hand, the lifting guide part 2 may not include the position adjustment part 2a. In that case, the lifting guide part 2 is directly detachably fixed to the car guide rail 31.

[0023] As described above, in the example shown in FIG. 2, the lifting guide part 2 of the measuring device 1 is detachably fixed to the car guide rail 31. Although it will be described in detail later, the lifting guide part 2 may be fixed to the counterweight guide rail 32. Also, in the case of measuring the dimensions of the wall surface 33 in the modification from a hydraulic elevator to a rope elevator, the lifting guide part 2 may be fixed to a hydraulic jack provided in the hydraulic elevator.

[0024] The lifting guide part 2 includes a fixing part 3 for detachably fixing the lifting guide part 2 and the car guide rail 31. The fixing part 3 is provided, for example, on the surface of the lifting guide part 2 facing the car guide rail 31.

[0025] The fixing part 3 may include, for example, a magnet that fixes the lifting guide part 2 to the elevator car guide rail 31 by magnetic force. The fixing part 3 is not particularly limited as long as the lifting guide part 2 is detachable from the elevator car guide rail 31. The fixing part 3 may be, for example, double-sided tape with a removable adhesive layer, and a clip that holds the elevator car guide rail 31.

[0026] The lifting guide section 2 may have multiple fixing parts 3. For example, as shown in Figure 3, the lifting guide section 2 may have multiple fixing parts 3 on the position adjustment section 2a. This makes it easy to change the measurement position in the lateral direction.

[0027] As shown in Figure 3, the lifting unit 4 has a drive unit 5 that engages with the lifting guide unit 2 so as to be movable in the vertical direction. The lifting unit 4 also has a power unit 6 that drives the drive unit 5. The power unit 6 transmits power to the drive unit 5 via a power transmission mechanism (not shown) such as gears. In the example shown in Figure 3, the drive unit 5 is a tire that engages with the widthwise end of a vertically extending rectangular through hole 2b formed in the central region of the lifting guide unit 2, and the power unit 6 is a motor that rotates the tire. In the example shown in Figure 3, the motor rotates the tire, causing the lifting unit 4 and the measuring unit 7 provided on the lifting unit 4 to move up and down along the lifting guide unit 2.

[0028] The measuring unit 7 measures the dimensions of the wall surface 33 of the pit 30 provided in the hoistway 20 of the elevator 100. As shown in Figure 2, the measuring unit 7 is provided on the lifting unit 4 and moves up and down along the lifting guide unit 2 as the lifting unit 4 moves up and down. The method by which the measuring unit 7 measures the wall surface dimensions is not particularly limited, as long as it is possible to measure the dimensions of the wall surface 33 of the pit 30 without contact. The measuring unit 7 is, for example, a high-precision sensor such as LiDAR (Light Detection And Ranging) that irradiates laser light and measures the distance to the wall surface 33 and its shape based on the reflected light reflected from the wall surface 33. Alternatively, the measuring unit 7 may be a sensor that uses ultrasound or electromagnetic waves. On the other hand, the measuring unit 7 may be a three-dimensional camera capable of capturing three-dimensional images. Furthermore, the measuring unit 7 may be a portable information terminal that includes at least one of the above sensor function or three-dimensional camera function.

[0029] Referring further to Figure 4, the installation position of the measuring device 1 will be described in detail. Figure 4 is a diagram illustrating the installation position of the measuring device 1. More specifically, it is a diagram illustrating the installation position of the measuring device 1 when measuring the dimensions of the wall surface 33 for installing the hoisting machine 40. In the following, the explanation will be given using the case of measuring the dimensions of the wall surface 33 for installing the hoisting machine 40 as an example.

[0030] As shown in Figure 4, when measuring the dimensions of the wall surface 33 at the location where the hoisting machine 40 is installed, the measuring device 1 is fixed to the elevator car guide rail 31. In this case, the measuring device 1 is fixed to the elevator car guide rail 31 so that the measuring section 7 faces the wall surface 33 at the location where the hoisting machine 40, which is the object of measurement, is installed. In the example shown in Figure 4, the lifting guide section 2 includes a position adjustment section 2a, but depending on the positional relationship between the elevator car guide rail 31 and the wall surface 33 to be measured, the position adjustment section 2a may not be included. As shown in Figure 4, after installing the measuring device 1, the lifting section 4, on which the measuring section 7 is provided, is raised and lowered to measure the dimensions of the wall surface 33 in the area to be measured.

[0031] The measuring device 1 according to the second embodiment will be described using Figures 5 and 6. Figure 5 is a diagram illustrating the pit 30 of the elevator 100 according to the second embodiment. Figure 6 is a diagram illustrating the mounting position of the measuring device 1 according to the second embodiment.

[0032] In the second embodiment, the installation positions of the hoisting machine 40, counterweight 50, counterweight guide rail 32, and control panel 60, which are provided in the pit 30 of the elevator 100, differ from those of the first embodiment. Furthermore, due to the different installation positions of the equipment provided in the pit 30, the fixed position of the measuring device 1 and the shape of the position adjustment unit 2a differ from those of the first embodiment. In the second embodiment, the same configuration as in the first embodiment is used and assigned the same reference numerals as in the first embodiment.

[0033] As shown in Figure 5, the elevator 100 is located within the pit 30, and the hoisting machine 40 and counterweight 50 may be installed on the rear side of the elevator car 10. Furthermore, a counterweight guide rail 32 is installed on the rear side of the elevator car 10 in accordance with the position of the counterweight 50. In this case, the control panel 60 may be installed on the side of the elevator car 10 within the pit 30.

[0034] In the above case, the object to be measured for the installation of the hoisting machine 40 is the rear wall surface 33 of the elevator car 10. Therefore, it is preferable that the measuring device 1 be installed so that the measuring section 7 faces the rear wall surface 33 of the elevator car 10. In this case, the measuring device 1 may be fixed to the counterweight guide rail 32, as shown in Figure 6. The position adjustment section 2a may be deformed. In the example shown in Figure 6, the position adjustment section 2a is bent in order to face the measuring section 7 against the rear wall surface 33 of the elevator car 10. After installing the measuring device 1 as shown in Figure 6, the lifting section 4 on which the measuring section 7 is installed is raised and lowered to measure the dimensions of the wall surface 33 of the area to be measured.

[0035] As described above, the wall surface measuring device for the elevator 100 having the above configuration can accurately measure the dimensions of the wall surface 33 of the pit 30 provided in the elevator shaft 20 of the elevator 100. As a result, errors in measuring the dimensions of the wall surface 33 of the pit 30 can be suppressed. Furthermore, since the lifting section 4 moves up and down along the lifting guide section 2 and the measuring section 7 is installed on the lifting section 4, the dimensions of the wall surface 33 can be accurately measured over a wide vertical range of the pit 30 without increasing the vertical height of the measuring section 7. In addition, since the measuring section 7 is installed on the lifting section 4, the dimensions of the wall surface 33 at a desired height can be measured with greater precision.

[0036] Furthermore, when measuring the wall surface 33 while changing the height position of the lifting unit 4, the measuring unit 7 may acquire multiple images representing the wall surface shape, including dimension or three-dimensional coordinate position data, as images including the dimensions of the wall surface 33 measured at different height positions, using a three-dimensional camera or LiDAR, and combine these multiple images vertically to create a composite image including dimension or three-dimensional coordinate position data. If the measuring unit 7 is the above-mentioned portable information terminal, it may include a touchscreen having the functions of a display unit and an input unit for displaying the composite image, and after the user removes the measuring unit 7 from the lifting unit 4, the user may measure the dimension between two points on the wall surface 33 of the pit 30, indicated on the touchscreen, while looking at the touchscreen, and the measurement result may be displayed on the touchscreen.

[0037] Furthermore, the measurement results and data representing the composite image measured by the measurement unit 7 may be stored in a memory or other storage unit of the measurement unit 7, and the data stored in the storage unit may be transmitted to an external computer via wired or wireless connection, allowing the user to check the measurement results and composite image on a display unit such as a display connected to that computer.

[0038] The present invention is further described by the following embodiments. Configuration 1: A measuring device for measuring the wall dimensions of a pit provided in an elevator shaft, comprising a lifting guide section that is detachably fixed to a long member extending vertically from the floor surface of the pit and guides a lifting section on which a measuring section is installed so as to be movable vertically, wherein the lifting guide section is fixed so as to face the wall surface of the pit, the lifting section includes a drive section that engages with the lifting guide section and moves the lifting section up and down along the lifting guide section, and the measuring section measures the wall dimensions of the pit non-contact. Configuration 2: The measuring device according to Configuration 1, wherein the elongated member is a guide rail for guiding the elevator car up and down, and the lifting guide portion is detachably fixed to the guide rail. Configuration 3: The measuring device according to Configuration 1 or 2, wherein the lifting guide portion includes a position adjustment portion that extends laterally away from the elongated member. Configuration 4: The measuring device according to any one of Configurations 1 to 3, wherein the drive unit includes a tire that engages with the lifting guide unit, and the lifting unit has a motor that rotates the tire and moves up and down in accordance with the rotation of the motor. [Explanation of Symbols]

[0039] 1 Measuring device, 2 Lifting guide section, 2a Position adjustment section, 2b Through hole, 3 Fixing section, 4 Lifting section, 5 Drive section, 6 Motor, 7 Measuring section, 10 Elevator car, 11 Elevator car door, 12 Landing door, 20 Hoistway, 21 Wire rope, 22 Rope stopper, 23 Counterweight return wheel stopper, 24 Return wheel, 25 Elevator car suspension wheel, 26 Counterweight return wheel, 27 Counterweight suspension wheel, 30 Pit, 31 Elevator car guide rail, 32 Counterweight guide rail, 33 Wall surface, 40 Hoisting machine, 50 Counterweight, 60 Control panel, 100 Elevator

Claims

1. A measuring device for measuring the wall dimensions of a pit installed in an elevator shaft, It has a lifting guide that is detachably fixed to a long member extending vertically from the floor surface of the pit, and that guides the lifting section on which the measuring section is installed so as to be movable in the vertical direction, The lifting guide section is fixed so that the measuring section faces the wall surface of the pit. The lifting unit includes a drive unit that engages with the lifting guide unit and moves the lifting unit up and down along the lifting guide unit. The aforementioned measuring unit is a measuring device that measures the dimensions of the pit wall surface in a non-contact manner.

2. The aforementioned elongated member is a guide rail that guides the elevator car as it moves up and down, The measuring device according to claim 1, wherein the lifting guide portion is detachably fixed to the guide rail.

3. The measuring device according to claim 1, wherein the lifting guide portion includes a position adjustment portion that extends laterally away from the elongated member.

4. The drive unit includes a tire that engages with the lifting guide unit. The measuring device according to any one of claims 1 to 3, wherein the lifting section has a motor for rotating the tire and moves up and down in accordance with the rotation of the motor.

Images