Measurement device
By installing a lifting guide and a measuring device in the elevator shaft pit, the problem of accuracy in measuring the pit wall dimensions was solved, achieving high-precision and wide-range wall measurement and avoiding errors from manual measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-29
- Publication Date
- 2026-03-10
AI Technical Summary
Existing technologies cannot accurately measure the dimensions of the elevator shaft pit walls, especially in the conversion from hydraulic elevators to rope elevators. Manual measurement is prone to errors, and existing devices cannot measure the pit walls from the top of the car.
A measuring device was designed, including a lifting guide and a measuring part. The lifting guide is fixed to a long strip component along the vertical direction on the ground of the well pit. The lifting part moves up and down along the lifting guide via a drive part. The measuring part measures the dimensions of the pit wall in a non-contact manner.
It enables accurate measurement of the pit wall, reduces human error, and allows for the measurement of a large range of wall dimensions without increasing the height of the measuring unit, thus improving measurement accuracy and coverage.
Smart Images
Figure CN121631957A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to a wall surface measuring device of an elevator, and particularly relates to a wall surface size measuring device of a hoistway of an elevator. BACKGROUND
[0002] In the past, at the time of replacement and renovation work of an elevator, as a preliminary preparation stage, an operation of accurately grasping the state inside the hoistway of the elevator and measuring the size of each portion required for plotting and the like is performed. This operation is performed by a measuring person actually measuring the size of each portion inside the hoistway using a laser range finder, a measuring tool from the pit, the upper portion of the car.
[0003] In Patent Literature 1, a hoistway inside size measuring device of an elevator is disclosed, which has a size measuring device that measures the shape of each portion of the hoistway at the upper portion of the car, and an operator can easily and safely measure and accurately grasp the shape inside the hoistway. SUMMARY
[0004] As described above, in the renovation work and the like of an elevator, the size measurement of the hoistway wall surface is an important operation. In particular, in the renovation from a hydraulic elevator to a rope elevator, the size measurement of the pit wall surface is a very important operation. In the past, the size measurement operation of the pit wall surface was performed by an operator standing down in the pit and measuring by manual operation. However, depending on the proficiency of the operator, there is a problem that the size measurement of the pit wall surface is erroneous. Furthermore, even the hoistway inside size measuring device of an elevator described in Patent Literature 1 cannot measure the size of the pit wall surface because the measuring device is provided at the upper portion of the car, and cannot solve the problem.
[0005] The measuring device of the present application is a measuring device that measures the size of the wall surface of a pit provided in a hoistway of an elevator. It is characterized by having a lift guide portion that is fixed to an elongated member extending in the vertical direction from the floor of the pit in a detachable manner, and guides a lift portion provided with a measuring portion so as to be movable in the vertical direction. The lift guide portion is fixed in a manner that the measuring portion opposes the wall surface of the pit. The lift portion includes a drive portion that engages with the lift guide portion and lifts the lift portion along the lift guide portion. The measuring portion measures the size of the wall surface of the pit in a non-contact manner.
[0006] The above and other objects, features, aspects and advantages of the present application will become more apparent from the following detailed description of the present application taken in conjunction with the accompanying drawings, in which: BRIEF DESCRIPTION OF DRAWINGS
[0007] Figure 1A is a schematic view that explains the routing of the cable of the elevator of the first embodiment.
[0008] Figure 1BThis is a schematic diagram illustrating the cross-section of the pit of the elevator in the first embodiment.
[0009] Figure 2 This is a perspective view illustrating the measuring device of the first embodiment.
[0010] Figure 3 This is a rear view illustrating the measuring apparatus of the first embodiment.
[0011] Figure 4 This is a diagram illustrating the installation position of the measuring device according to the first embodiment.
[0012] Figure 5 This is a diagram illustrating the pit of the elevator in the second embodiment.
[0013] Figure 6 This is a diagram illustrating the installation position of the measuring device in the second embodiment. Detailed Implementation
[0014] Hereinafter, embodiments of the measuring apparatus of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below are merely examples, and the present invention is not limited to the following embodiments. Furthermore, the present invention includes selective combinations of various embodiments and modifications described below.
[0015] use Figure 1A and Figure 1B The elevator 100 of the first embodiment will be described in detail. Figure 1A This is a schematic diagram illustrating the wiring of the cable 21 of elevator 100. Figure 1B This is a schematic diagram illustrating the cross-section of the pit 30 of elevator 100. Furthermore, Figure 1A The positional relationships of the components have been adjusted for clarity in the accompanying drawings. The configuration of each component, etc., can be found in the instruction manual. Figure 1B Please provide further explanation.
[0016] Elevator 100 includes a car 10 for carrying people or goods, and is a lifting device that moves people or goods by the car 10 moving up and down within the hoistway 20 and stopping at each floor. A car door 11 is provided in the car 10 to separate the car 10 from the hoistway 20. A landing door 12 is provided at each floor to separate the landing from the hoistway 20.
[0017] The elevator 100 includes a traction machine 40 as a drive device for raising and lowering the car 10. The car 10 is mounted in a manner that clamps the car 10. Figure 1A , 1BTwo car guide rails 31 on either side of the car guide the vertical movement. A counterweight 50 is used for the vertical movement of the car 10. The counterweight 50 is guided vertically by two counterweight guide rails 32 arranged to clamp the counterweight 50. Furthermore, in Figure 1A In the diagram, the counterweight 50, traction machine 40, and car 10 are shown arranged in a left-right configuration, but... Figure 1A This is a diagram to easily understand the winding path of a cable. In fact, as shown... Figure 1B As shown, the traction machine 40 and the counterweight 50 are located on the side of the lifting path of the car 10. Figure 1B (on the left side), along the depth direction of shaft 20 ( Figure 1B The two counterweight guide rails 32 are arranged separately on both sides of the depth direction of the shaft 20 relative to the counterweight 50.
[0018] A cable 21, wound around a traction machine 40, is installed inside the hoistway 20. One end of the cable 21 is supported by a rope end fixing member 22 located on the upper side of the car guide rail 31 on the side away from the traction machine 40. The other end of the cable 21 is supported by a counterweight anti-cord sheave fixing member 23 located on the upper side of the two counterweight guide rails 32.
[0019] The cable 21 is wound between the traction machine 40 and the rope end fixing member 22, around the anti-cord sheave 24 located on the upper side of the car guide rail 31 near the traction machine 40, and the car hanging sheave 25 located at the bottom of the outer side of the car 10. Furthermore, the cable 21 is wound between the traction machine 40 and the counterweight anti-cord sheave fixing member 23, around the counterweight anti-cord sheave 26 and the counterweight hanging sheave 27 located on the counterweight 50.
[0020] Elevator 100 is a machine-room-less elevator. The machine-room-less elevator has the aforementioned traction machine 40, descending counterweight 50, and control panel 60 installed within the pit 30. The pit 30 is the area from the first floor of elevator 100 to the ground level of the hoistway 20. Figure 1B In the example shown, a traction machine 40 and a counterweight 50 are provided on the side of the car 10 within the pit 30. Furthermore, a control panel 60 is provided on the rear side of the car 10 within the pit 30.
[0021] like Figure 1A and Figure 1B As shown, the elevator 100 includes a car guide rail 31 for guiding the car 10 to rise and fall, and a counterweight guide rail 32 for guiding the counterweight 50 to rise and fall. The car guide rail 31 and the counterweight guide rail 32 are tracks that extend vertically from the floor of the pit 30 to the ceiling of the hoistway 20.
[0022] use Figure 2 and Figure 3 The measuring device 1 of the first embodiment will be described in detail.Figure 2 This is a three-dimensional diagram illustrating the measuring device 1. Figure 3 This is a rear view illustrating the measuring device 1.
[0023] The measuring device 1 is used to measure the dimensions of the wall 33 of the pit 30 located in the shaft 20 of the elevator 100. The measuring device 1 has a lifting guide 2, which is detachably fixed to a long strip extending vertically from the floor of the pit 30, guiding the lifting unit 4, on which the measuring unit 7 is located, to move freely vertically. The lifting guide 2 is positioned opposite the wall 33 of the area to be measured, as detailed later.
[0024] Long, narrow components include, for example, the car guide rail 31 and the counterweight guide rail 32 mentioned above. Alternatively, long, narrow components can also be hydraulic jacks used in hydraulic elevators to raise and lower the car 10. Figure 2 In the example shown, the lifting guide 2 is fixed to the side of one of the two car guide rails 31 provided in the hoistway 20, on the side opposite to the car 10.
[0025] The lifting guide 2 guides the lifting unit 4, which is equipped with the measuring unit 7, in its lifting and lowering motion. The shape and material of the lifting guide 2 are not particularly limited, as long as they allow the lifting unit 4 to move freely in the vertical direction. For example... Figure 2 As shown, the lifting guide 2 is, for example, plate-shaped, with a rectangular through hole 2b extending vertically in the central region of its surface. The drive unit 5, provided in the lifting unit 4, engages with the through hole 2b of the lifting guide 2. Alternatively, it may not be a through hole 2b, but a groove or the like extending vertically. The lifting guide 2 may also be made of metal, such as stainless steel.
[0026] like Figure 2 As shown, the lifting guide 2 may also include a position adjustment section 2a that extends laterally away from the car guide rail 31. The position adjustment section 2a is joined to the lifting guide 2 by welding or the like.
[0027] like Figure 2 As shown, the position adjustment unit 2a extends laterally from the car guide rail 31, enabling adjustment of the position of the portion of the lifting guide 2 where the lifting unit 4 is located. That is, it allows adjustment of the position where the measuring unit 7 performs measurements. Alternatively, the lifting guide 2 may not include the position adjustment unit 2a. In this case, the lifting guide 2 is directly fixed to the car guide rail 31 in a detachable manner.
[0028] As mentioned above, in Figure 2In the example shown, the lifting guide 2 of the measuring device 1 is fixed to the car guide rail 31 in a detachable manner. The lifting guide 2 can also be fixed to the counterweight guide rail 32, as detailed later. In addition, when measuring the dimensions of the wall 33 during the conversion from a hydraulic elevator to a rope elevator, the lifting guide 2 can also be fixed to a hydraulic jack installed in the hydraulic elevator.
[0029] The lifting guide 2 includes a fixing part 3 that secures the lifting guide 2 and the car guide rail 31 in a detachable manner. The fixing part 3 is provided, for example, on the surface of the lifting guide 2 opposite to the car guide rail 31.
[0030] The fixing part 3 may include, for example, a magnet that fixes the lifting guide 2 to the car guide rail 31 by magnetic force. Furthermore, the fixing part 3 is not particularly limited as long as it allows the lifting guide 2 to be attached to and detached from the car guide rail 31. The fixing part 3 may also be, for example, double-sided tape with a removable adhesive layer and a clamp for holding the car guide rail 31.
[0031] The lifting guide 2 may also have multiple fixing parts 3. For example, such as Figure 3 As shown, the lifting guide 2 may also have multiple fixing parts 3 in the position adjustment part 2a. This allows for easy changes in the lateral measurement position.
[0032] like Figure 3 As shown, the lifting unit 4 has a drive unit 5 that engages with the lifting guide unit 2 in a manner that allows it to move vertically. Additionally, the lifting unit 4 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. Figure 3 In the example shown, the drive unit 5 is a tire that engages with the width end of a rectangular through-hole 2b extending vertically in the central region of the lifting guide unit 2, and the power unit 6 is a motor that rotates the tire. Figure 3 In the example shown, the tire is rotated by a motor, thereby 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.
[0033] The measuring unit 7 measures the dimensions of the wall 33 of the pit 30 located in the shaft 20 of the elevator 100. For example... Figure 2As shown, the measuring unit 7 is disposed on the lifting unit 4 and moves up and down along the lifting guide unit 2 while the lifting unit 4 moves up and down. The method by which the measuring unit 7 measures the wall dimensions is not particularly limited, as long as it can measure the dimensions of the wall 33 of the pit 30 in a non-contact manner. The measuring unit 7 can be, for example, a high-precision sensor such as a laser radar (Light Detection and Ranging) that illuminates a laser and measures the distance and shape to the wall 33 based on the reflected light reflected from the wall 33. Alternatively, the measuring unit 7 can also be a sensor using ultrasonic waves or electromagnetic waves. On the other hand, the measuring unit 7 can also be a 3D camera capable of capturing stereoscopic 3D images. Furthermore, the measuring unit 7 can also be a portable information terminal that includes at least one of the above-mentioned sensor functions and 3D camera functions.
[0034] Further reference Figure 4 The location of the measuring device 1 will be described in detail. Figure 4 This diagram illustrates the installation position of the measuring device 1. More specifically, it illustrates the installation position of the measuring device 1 when measuring the dimensions of the wall surface 33 used for installing the traction machine 40. The following explanation will use the case of measuring the dimensions of the wall surface 33 used for installing the traction machine 40 as an example.
[0035] like Figure 4 As shown, when measuring the dimensions of the wall 33 at the location where the traction machine 40 is installed, a measuring device 1 is fixed to the car guide rail 31. At this time, the measuring device 1 is fixed to the car guide rail 31 with its measuring section 7 facing the wall 33 at the location where the traction machine 40 is installed, which is the object of measurement. Figure 4 In the example shown, the lifting guide 2 includes a position adjustment section 2a, but depending on the positional relationship between the car guide rail 31 and the wall surface 33, which is the object of measurement, the position adjustment section 2a may not be included. Figure 4 As shown, after the measuring device 1 is installed, the lifting part 4, which is equipped with the measuring part 7, is raised and lowered to measure the dimensions of the wall surface 33 of the measurement target area.
[0036] use Figure 5 and Figure 6 The measuring device 1 of the second embodiment will be described. Figure 5 This is a diagram illustrating the pit 30 of the elevator 100 in the second embodiment. Figure 6 This diagram illustrates the installation position of the measuring device 1 according to the second embodiment.
[0037] In the second embodiment, the positions of the traction machine 40, counterweight 50, counterweight guide rail 32, and control panel 60 located in the pit 30 of the elevator 100 differ from those in the first embodiment. Furthermore, due to the different positions of the equipment in the pit 30, the fixed position of the measuring device 1 and the shape of the position adjustment part 2a differ from those in the first embodiment. In the second embodiment, structures identical to those in the first embodiment are labeled with the same reference numerals as in the first embodiment.
[0038] like Figure 5 As shown, the elevator 100 may also have a traction machine 40 and a counterweight 50 installed in the pit 30 and on the rear side of the car 10. Furthermore, a counterweight guide rail 32 is installed on the rear side of the car 10, corresponding to the position of the counterweight 50. In this case, the control panel 60 may also be installed on the side of the car 10 within the pit 30.
[0039] In the above case, the measuring object used to install the traction machine 40 is the rear wall 33 of the car 10. Therefore, the measuring device 1 is preferably arranged such that the measuring part 7 is opposite to the rear wall 33 of the car 10. In this case, as Figure 6 As shown, the measuring device 1 can also be fixed to the counterweight guide rail 32. The position adjustment part 2a can also be deformed. Figure 6 In the example shown, the position adjustment part 2a is bent so that the measuring part 7 is aligned with the rear wall 33 of the car 10. Figure 6 As shown, after the measuring device 1 is installed, the lifting part 4, which is equipped with the measuring part 7, is raised and lowered to measure the dimensions of the wall surface 33 of the measurement target area.
[0040] As described above, the wall measuring device of the elevator 100 with the above structure can accurately measure the dimensions of the wall 33 of the pit 30 provided in the hoistway 20 of the elevator 100. As a result, errors in the measurement of the dimensions of the wall 33 of the pit 30 can be suppressed. In addition, since the lifting unit 4 moves along the lifting guide 2 and the measuring unit 7 is provided in the lifting unit 4, the dimensions of the wall 33 in the vertical direction of the pit 30 can be accurately measured over a wide range without increasing the vertical height of the measuring unit 7. Furthermore, since the measuring unit 7 is provided in the lifting unit 4, the dimensions of the wall 33 at the desired height position can be measured with higher precision.
[0041] Alternatively, while measuring the wall 33 by changing the height of the lifting unit 4, the measuring unit 7 uses a 3D camera and a lidar to acquire multiple images of the wall shape, including data on dimensions or 3D coordinate positions, as images containing the dimensions of the wall 33 measured at different height positions. These multiple images are then combined vertically to create a composite image containing data on dimensions or 3D coordinate positions. If the measuring unit 7 is the aforementioned portable information terminal, it can also be configured as a touchscreen including a display unit for displaying the composite image and an input unit. After the user removes the measuring unit 7 from the lifting unit 4, they can observe the touchscreen while measuring the dimension between two points on the wall 33 of the pit 30 indicated by the touchscreen, and display the measurement result on the touchscreen.
[0042] Alternatively, the measurement results and composite images measured by the measurement unit 7 may be stored in a storage unit such as a memory of the measurement unit 7, and the data stored in the storage unit may be transmitted to an external computer via wired or wireless means, so that the user can confirm the measurement results and composite images through a display unit such as a monitor connected to the computer.
[0043] The present invention is further illustrated by the following embodiments.
[0044] Structure 1: A measuring device for measuring the wall dimensions of a pit in an elevator shaft, wherein the measuring device has a lifting guide portion that is detachably fixed to a long strip extending vertically from the floor of the pit and guides the lifting portion, which has the measuring portion, to move freely vertically. The lifting guide portion is fixed with the measuring portion facing the wall of the pit. The lifting portion includes a drive portion that engages with the lifting guide portion and causes the lifting portion to move up and down along the lifting guide portion. The measuring portion measures the wall dimensions of the pit in a non-contact manner.
[0045] Structure 2: According to the measuring device of Structure 1, the elongated component is a guide rail for guiding the lifting and lowering of the car, and the lifting guide is fixed to the guide rail in a detachable manner.
[0046] Structure 3: The measuring device according to Structure 1 or 2, wherein the lifting guide includes a position adjustment part that extends laterally away from the elongated member.
[0047] Structure 4: The measuring device according to any one of structures 1 to 3, wherein the drive unit includes a tire engaging with the lifting guide unit, the lifting unit having a motor for rotating the tire, and lifting and lowering according to the rotation of the motor.
[0048] Embodiments of the present invention have been described, but should be considered illustrative rather than restrictive in all respects. The scope of the invention is defined by the claims and is intended to include all modifications equivalent to and within the scope of the claims.
Claims
1. A measuring device that measures a size of a wall surface of a pit provided in a hoistway of an elevator, wherein the measuring device has a lift guide portion that is fixed to an elongated member extending in an up-and-down direction from a floor of the pit in a detachable manner and guides a lift portion provided with a measuring portion in a manner such that the lift portion is movable in the up-and-down direction, the lift guide portion is fixed in a manner such that the measuring portion opposes the wall surface of the pit, the lift portion includes a drive portion that engages with the lift guide portion and causes the lift portion to ascend and descend along the lift guide portion, and the measuring portion measures the size of the wall surface of the pit in a non-contact manner.
2. The measuring device according to claim 1, wherein the elongated member is a guide rail that guides the lift of a car, and the lift guide portion is fixed to the guide rail in a detachable manner.
3. The measuring device according to claim 1, wherein the lift guide portion includes a position adjustment portion that extends in a lateral direction away from the elongated member.
4. The measuring device according to any one of claims 1 to 3, wherein the drive portion includes a tire that engages with the lift guide portion, the lift portion has a motor that rotates the tire, and the lift portion ascends and descends in accordance with the rotation of the motor.