Elevator rope tester

Abstract

The present invention provides an elevator rope tester that can widen the circumferential region of the rope in which leaked magnetic flux can be detected. [Solution] The elevator rope tester comprises a main body and a detachable body that can be attached to the main body, wherein the main body comprises a guide section for guiding the rope, a magnetization section for magnetizing the rope, and a first magnetic section for collecting magnetic flux leaking from the rope, the detachable body comprises a second magnetic section for collecting magnetic flux leaking from the rope, the elevator rope tester comprises a detection section for detecting magnetic flux passing through the inside of the first magnetic section and the second magnetic section, the first magnetic section comprises a first recess arranged along the outer surface of the rope, the second magnetic section comprises a second recess arranged along the outer surface of the rope, and the first recess and the second recess are arranged to sandwich the rope when viewed in the direction of extension of the rope.

Description

Technical Field

[0001] This specification relates to a rope tester for elevators.

Background Art

[0002] Conventionally, for example, an elevator rope tester includes a guiding part for guiding a rope, a magnetization part for magnetizing the rope, a magnetic part for collecting magnetic flux leaking from the rope, and a detection part for detecting magnetic flux passing through the inside of the magnetic part (for example, Patent Document 1). And the magnetic part has a recessed part arranged along the outer peripheral surface of the rope.

[0003] By the way, in the elevator rope tester according to Patent Document 1, since the leaked magnetic flux is easily collected by the magnetic part from the region of the rope where the recessed part is arranged, the leaked magnetic flux can be detected by the detection part from the circumferential region of the rope where the recessed part is arranged. On the other hand, since the leaked magnetic flux is difficult to be collected by the magnetic part from the region of the rope away from the recessed part, there is a possibility that the leaked magnetic flux cannot be detected by the detection part from the circumferential region of the rope away from the recessed part.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Therefore, the problem is to provide an elevator rope tester capable of widening the circumferential region of the rope where the leaked magnetic flux can be detected.

Means for Solving the Problems

[0006] The elevator rope tester includes a main body, An elevator rope tester comprising a detachable body that can be attached to the main body, The aforementioned main body is A guide section that directs the rope, A magnetizing unit for magnetizing the aforementioned rope, It comprises a first magnetic unit that collects magnetic flux leaking from the rope, The detachable body includes a second magnetic part that collects magnetic flux leaking from the rope, The elevator rope tester includes a detection unit that detects the magnetic flux passing through the first magnetic part and the second magnetic part, The first magnetic portion includes a first recess arranged along the outer surface of the rope, The second magnetic portion includes a second recess arranged along the outer surface of the rope, The first recess and the second recess are arranged to sandwich the rope when viewed in the direction in which the rope extends. [Brief explanation of the drawing]

[0007] [Figure 1] Perspective view of an elevator rope tester according to one embodiment. [Figure 2] Front view of an elevator rope tester according to the same embodiment. [Figure 3] Front view of the main body according to this embodiment [Figure 4] Perspective view of the main body according to the same embodiment [Figure 5] Front view of the detachable body according to the same embodiment. [Figure 6] Perspective view of the detachable body according to the same embodiment. [Figure 7] Figure 2 shows a cross-sectional view of the main part along line VII-VII (a: diagram showing the detachable part attached to the main body, b: diagram showing the detachable part detached from the main body). [Figure 8] Plan view of the main part of the elevator rope tester according to the same embodiment. [Figure 9] Figure showing the magnetic part according to the same embodiment (a: front view, b: perspective view, c: perspective view) [Figure 10] Perspective view of an elevator rope tester according to another embodiment. [Modes for carrying out the invention]

[0008] In each drawing, the dimensions of components may be enlarged or reduced from their actual dimensions for the sake of clarity, and the dimensional ratios between drawings may not be consistent. Furthermore, in each drawing, some components may be omitted for the sake of clarity.

[0009] Terms including ordinal numbers such as "1st," "2nd," etc., are used to describe various components, but these terms are used solely for the purpose of distinguishing one component from others, and the components are not particularly limited by these terms. Furthermore, the number of components including ordinal numbers is not particularly limited; for example, there may be only one. Also, the ordinal numbers used in the following specification and drawings may differ from the ordinal numbers described in the claims.

[0010] The following description will explain one embodiment of an elevator rope tester with reference to Figures 1 to 9. Note that the following embodiment is provided as an example to aid in understanding the configuration of the elevator rope tester, and does not limit the configuration of the elevator rope tester.

[0011] As shown in Figures 1 and 2, the elevator rope tester (hereinafter also simply referred to as "rope tester") 1 is used, for example, to inspect an elevator rope X1 used in an elevator. For example, the rope tester 1 may inspect a moving rope X1, or for example, the rope tester 1 may inspect a stationary rope X1 by moving towards it.

[0012] The rope tester 1 includes a main body 2, a detachable body 3 that can be attached to and detached from the main body 2, and a string-shaped body 4 that connects the main body 2 and the detachable body 3. The rope tester 1 also includes a detaching mechanism 5 for attaching and detaching the detachable body 3 to and from the main body 2. Note that the main body 2 and the detachable body 3 may be arranged, for example, as in the present embodiment, so as to sandwich the rope X1 in the radial direction of the rope X1 to be inspected.

[0013] In each figure, the first direction D1 is the direction in which the rope X1 to be inspected extends (also referred to as the "extension direction"), the second direction D2 is the direction in the radial direction of the rope X1 to be inspected in which the main body 2 and the detachable body 3 sandwich the rope X1 (also referred to as the "first radial direction"), and the third direction D3 is the direction orthogonal to the second direction D2 in the radial direction of the rope X1 to be inspected (also referred to as the "second radial direction"). Note that the first to third directions D1 to D3 are directions orthogonal to each other.

[0014] The string-shaped body 4 may be, for example, a deformable long body, and may be configured to be connected to the main body 2 and the detachable body 3 at their respective ends. Although not particularly limited, the string-shaped body 4 may be, for example, a chain, or may be, for example, a wire, or may be, for example, a cord, or may be, for example, a string.

[0015] As shown in FIGS. 1 to 4, the main body 2 may include, for example, a first groove 21 that extends in the first direction (also referred to as the "groove length direction") D1 for inserting the rope X1 therein, and a gripping portion 22 that is gripped. And, for example, as in the present embodiment, the first groove 21 may be arranged at one end of the main body 2 in the second direction D2, and the gripping portion 22 may be arranged at the other end of the main body 2 in the second direction D2.

[0016] Note that, for example, the rope tester 1 may be used by gripping the gripping portion 22 of the main body 2, or, for example, the rope tester 1 may be used with the gripping portion 22 of the main body 2 fixed to an elevator device or a housing by an instrument or the like. Also, in FIGS. 3 and 4, the enlarged view of the one-dot chain line region shows an internal view.

[0017] The first groove 21 may, for example, as in this embodiment, comprise a pair of groove sides that are separated in a third direction (also called the "groove width direction") D3, and a groove bottom that connects the pair of groove sides. As a result, the first groove 21 is open in a second direction (also called the "groove depth direction") D2. The main body 2 is provided with a guide portion 21a for guiding the rope X1. The guide portion 21a may, for example, be formed at the groove bottom of the first groove 21, as in this embodiment.

[0018] Furthermore, as shown in Figures 3 and 4, the main body 2 includes a magnetization unit 23 that magnetizes the rope X1, a first magnetic unit 24 that collects (captures) the magnetic flux leaking from the magnetized rope X1, and a first detection unit 25 that detects the magnetic flux passing through the inside of the first magnetic unit 24. Although not particularly limited, the first detection unit 25 may be, for example, various magnetic sensors (e.g., Hall element, coil) that convert the magnitude of the magnetic flux (e.g., the magnitude of the magnetic flux density) into the magnitude of the voltage (current).

[0019] The magnetization section 23 may, for example, include a first magnet 23a and a second magnet 23b, and a magnetic path section 23c that magnetically connects the first magnet 23a and the second magnet 23b, as in this embodiment. In this way, the first magnet 23a, the second magnet 23b, and the magnetic path section 23c can cooperate with the rope X1 to form an annular magnetic circuit.

[0020] The magnets 23a and 23b are not particularly limited, but may be, for example, permanent magnets or electromagnets. The magnetic path section 23c is not particularly limited, but is formed of a magnetic material having high magnetic permeability, and may be made of, for example, pure iron or low-carbon steel.

[0021] The first magnetic part 24 includes first recesses 24a, 24a arranged along the outer circumferential surface of the rope X1 to be inspected. Thus, the first recesses 24a constitute a part of the first groove 21. Alternatively, for example, as in this embodiment, the main body 2 may include a first non-magnetic part 26 having a permeability lower than that of the first magnetic part 24, and the first groove 21 may be composed of the first recesses 24a and the first non-magnetic part 26.

[0022] The first magnetic part 24 is not particularly limited, but is formed of a magnetic material (ferromagnetic material) and has high magnetic permeability, and may be made of, for example, pure iron or low carbon steel. The first non-magnetic part 26 is not particularly limited, but is made of a non-magnetic material (paramagnetic material, diamagnetic material) and has low magnetic permeability, and may be made of, for example, a metal with a hardness lower than the hardness of the rope X1 (e.g., aluminum bronze, aluminum) or a hard resin.

[0023] Furthermore, for example, the permeability of a magnetic material is preferably 100 times or more than that of a non-magnetic material, and more preferably 1000 times or more. Furthermore, for example, the permeability of a magnetic material is preferably 100 times or more than that of air, and more preferably 1000 times or more.

[0024] Furthermore, the first magnetic section 24 may also include a first connecting section 24b that magnetically connects the first recess 24a and the first detection section 25, as in this embodiment. As a result, the first detection section 25 detects the magnetic flux passing through the inside of the first magnetic section 24, and the first detection section 25 can detect the magnetic flux leaking from the magnetized rope X1.

[0025] The main unit 2 may, for example, output the information detected by the first detection unit 25 to an external device (for example, a diagnostic system that diagnoses the rope X1 based on the information) via wired or wireless connection. The first connection unit 24b and the first detection unit 25 may, for example, be in contact, or they may be separated by a gap.

[0026] Alternatively, for example, as in this embodiment, the pair of first recesses 24a, 24a may be separated in the first direction D1, and the pair of first connecting parts 24b, 24b may sandwich the first detection part 25 in the first direction D1. In this configuration, when the broken portion of the rope X1 is located between the first recesses 24a, 24a, the magnetic flux leaked from the broken portion is collected by the first magnetic part 24, and the first detection part 25 detects the magnetic flux passing through the inside of the first magnetic part 24 (between the first connecting parts 24b, 24b).

[0027] As shown in Figures 5 and 6, the detachable body 3 may include, for example, an insertion portion 31 that is inserted into the first groove 21 of the main body 2. The insertion portion 31 may include, for example, a second groove 31a into which the rope X1 is inserted, as in this embodiment. Alternatively, the insertion portion 31 may be located at one end of the detachable body 3 in the second direction D2, as in this embodiment. Note that in Figures 5 and 6, the enlarged view of the dashed-dotted area shows an end view.

[0028] Furthermore, the detachable body 3 includes a second magnetic section 32 that collects (captures) magnetic flux leaking from the magnetized rope X1, and a second detection section 33 that detects the magnetic flux passing through the inside of the second magnetic section 32. Although not particularly limited, the second detection section 33 may be, for example, various magnetic sensors (e.g., Hall element, coil) that convert the magnitude of the magnetic flux (e.g., the magnitude of the magnetic flux density) into the magnitude of the voltage (current).

[0029] The second magnetic part 32 includes second recesses 32a, 32a arranged along the outer circumferential surface of the rope X1 to be inspected. Thus, the second recesses 32a constitute a part of the second groove 31a. Alternatively, for example, as in this embodiment, the detachable body 3 may include a second non-magnetic part 34 having a permeability lower than that of the second magnetic part 32, and the second groove 31a may be composed of the second recesses 32a and the second non-magnetic part 34.

[0030] The second magnetic part 32 is not particularly limited, but is formed of a magnetic material (ferromagnetic material) and has high magnetic permeability, and may be made of, for example, pure iron or low carbon steel. The second non-magnetic part 34 is not particularly limited, but is formed of a non-magnetic material (paramagnetic material, diamagnetic material) and has low magnetic permeability, and may be made of, for example, a metal with a hardness lower than the hardness of the rope X1 (e.g., aluminum bronze, aluminum) or a hard resin.

[0031] Furthermore, the second magnetic section 32 may also include a second connecting section 32b that magnetically connects the second recess 32a and the second detection section 33, as in this embodiment. As a result, the second detection section 33 detects the magnetic flux passing through the inside of the second magnetic section 32, and the second detection section 33 can detect the magnetic flux leaking from the magnetized rope X1.

[0032] Furthermore, the detachable body 3 may output the information detected by the second detection unit 33 to an external device (for example, a diagnostic system that diagnoses the rope X1 based on the information) via wired or wireless means. For example, the second connection part 32b and the second detection unit 33 may be in contact, or they may be separated with a gap between them.

[0033] Alternatively, for example, as in this embodiment, the pair of second recesses 32a, 32a may be separated in the first direction D1, and the pair of second connecting parts 32b, 32b may sandwich the second detection part 33 in the first direction D1. In this configuration, when the broken portion of the rope X1 is located between the second recesses 32a, 32a, the magnetic flux leaked from the broken portion is collected by the second magnetic part 32, and the second detection part 33 detects the magnetic flux passing through the inside of the second magnetic part 32 (between the second connecting parts 32b, 32b).

[0034] As shown in Figures 3 to 6, the attachment / detachment mechanism 5 may be configured such that, for example, the main body 2 has a hole 27 and the attachment / detachment body 3 is equipped with a hooking part 51 that hooks onto the hole 27. Specifically, for example, as in this embodiment, the hooking part 51 may be a sphere with a portion protruding in the third direction D3 from the insertion part 31 of the attachment / detachment body 3, and the hole 27 may be configured such that it has a circular opening in the first groove 21 of the main body 2 (specifically, the groove side) and is recessed in the third direction D3.

[0035] As a result, the detachable body 3 is attached to the main body 2 and positioned on the main body 2 by inserting the hook portion 51 into the hole portion 27 and hooking the hole portion 27. The number of hook portions 51 and holes portion 27 is not particularly limited, and for example, as in this embodiment, there may be four of each (in Figures 3 to 6, only two of each of the holes portion 27 and hook portions 51 are shown), or there may be one, two, three, or five or more of each.

[0036] Furthermore, for example, as in this embodiment, the main body 2 may be provided with a first engaging portion 28, and the detachable body 3 may be provided with a second engaging portion 35 that engages with the first engaging portion 28. Also, for example, as in this embodiment, the first engaging portion 28 may be formed in a concave shape that widens toward the tip of the main body 2 in the second direction D2, and the second engaging portion 35 may be formed in a convex shape that narrows toward the tip of the detachable body 3 in the second direction D2.

[0037] As a result, the second engaging portion 35 is guided by the first engaging portion 28 and fits into the first engaging portion 28, thereby engaging with the first engaging portion 28, and the detachable body 3 is positioned on the main body 2. Therefore, the hooking portion 51 can be easily inserted into the hole portion 27, and for example, the detachable body 3 can be easily attached to the main body 2. Thus, in this embodiment, the hooking portion 51, the hole portion 27, the first engaging portion 28, and the second engaging portion 35 constitute a positioning mechanism for positioning the detachable body 3 on the main body 2.

[0038] Furthermore, as shown in Figure 7, the attachment / detachment mechanism 5 is equipped with an elastically deformable elastic part 52. The elastic part 52 may be configured, for example, as in this embodiment, to be located inside the attachment / detachment body 3 and to apply an elastic restoring force in the third direction D3 to the hook part 51 by elastically deforming in the third direction D3.

[0039] As a result, the amount by which the hook portion 51 protrudes from the detachable body 3 is changed by the elastic deformation of the elastic portion 52 in the third direction D3. Therefore, the detachable body 3 can be attached to and detached from the main body 2 by the attachment / detachment mechanism 5. The elastic portion 52 may be a spring, for example, as in this embodiment, although it is not particularly limited.

[0040] For example, if the cut portion of the rope X1 protrudes from the outer surface of the rope X1, there is a risk that the cut portion will come into contact with the detachable body 3. When the cut portion comes into contact with the detachable body 3, an external force is applied to the detachable body 3 from the cut portion. As a result, the elastic portion 52 receives the external force via the hook portion 51 and undergoes compressive elastic deformation in the third direction D3. Consequently, the hook portion 51 releases its hook from the hole portion 27, and the detachable body 3 detaches from the main body 2.

[0041] In this way, when an external force is applied to the detachable body 3, the detachable body 3 can be detached from the main body 2. Therefore, it is possible to suppress the detachable body 3 from being subjected to a large external force, and for example, it is possible to suppress the detachable body 3 from damaging the rope X1 or the rope X1 from damaging the detachable body 3.

[0042] Furthermore, since the string-like body 4 (see Figures 1 and 2) connects the main body 2 and the detachable body 3, it is possible to prevent the detachable body 3 from moving too far away from the main body 2 when it detaches from it. This prevents, for example, the detachable body 3 from falling to the ground and being subjected to impact after detaching from the main body 2, and also prevents the detachable body 3 from becoming lost after detaching from the main body 2.

[0043] Furthermore, as shown in Figure 7(a), when the detachable body 3 is attached to the main body 2 and the rope X1 is guided (in contact with) the guide portion 21a of the main body 2, the detachable body 3 (specifically, the second groove 31a of the insertion portion 31) is separated from the rope X1. This prevents external force from being applied from the rope X1 to the detachable body 3.

[0044] Therefore, for example, it is possible to suppress the unnecessary detachment of the attachment body 3 from the main body 2. Although not particularly limited, the distance at which the attachment body 3 (specifically, the second groove 31a of the insertion part 31) separates from the rope X1 when the rope X1 is guided by the guide part 21a of the main body 2 may be, for example, 1 mm to 3 mm.

[0045] Then, as shown in Figures 8 and 9, the rope X1 is sandwiched between the main body 2 and the detachable body 3 when the detachable body 3 is attached to the main body 2, so that the first recess 24a and the second recess 32a are positioned to sandwich the rope X1 in a view in the first direction D1. Note that in Figure 8, the enlarged view of the dashed-dotted line area shows an end view.

[0046] As a result, not only can the magnetic flux leaked from the circumferential region of the rope X1 where the first recess 24a is located be collected by the first recess 24a, but the magnetic flux leaked from the circumferential region of the rope X1 where the second recess 32a is located can also be collected by the second recess 32a. Since the collected magnetic flux is detected by the detection units 25 and 33, the circumferential region of the rope X1 in which leaked magnetic flux can be detected can be widened.

[0047] Moreover, the first recess 24a and the second recess 32a are arranged continuously around the entire circumference of the rope X1 by forming an opening for inserting the rope X1 when viewed in the first direction D1. Specifically, the first recess 24a and the second recess 32a are in contact with each other, forming an opening for inserting the rope X1, and are arranged continuously around the entire circumference of the rope X1.

[0048] This allows the magnetic flux leaked from the entire circumference of the rope X1 to be collected in the first recess 24a and the second recess 32a. Since the collected magnetic flux can be detected by the first detection unit 25 and the second detection unit 33, the circumferential region of the rope X1 in which leaked magnetic flux can be detected can be made to cover the entire circumference of the rope X1. Therefore, for example, the inspection of the rope X1 can be completed by inspecting the rope X1 only once with the rope tester 1.

[0049] When the rope X1 is guided by the guide portion 21a of the main body 2, the first recess 24a and the second recess 32a may be separated from the rope X1 to such an extent that they can collect the magnetic flux leaked from the rope X1, or they may be in contact with the rope X1. When the rope X1 is guided by the guide portion 21a of the main body 2, the distance between the first recess 24a and the second recess 32a and the outer surface of the rope X1 may be, for example, 3 mm or less.

[0050] Furthermore, the first detection unit 25 detects the magnetic flux passing through the first magnetic part 24, and the second detection unit 33 detects the magnetic flux passing through the second magnetic part 32. As a result, whether the first magnetic part 24 and the second magnetic part 32 are in contact or separated, the respective detection units 25 and 33 can detect the magnetic flux flowing through the respective magnetic parts 24 and 32.

[0051] Therefore, even if the first magnetic part 24 and the second magnetic part 32 separate due to the guide part 21a guiding the rope X1 and the rope tester 1 vibrating, the magnetic flux leaked from the rope X1 can be reliably detected by the respective detection parts 25 and 33.

[0052] When the first magnetic part 24 and the second magnetic part 32 are separated, the first detection unit 25 detects only the magnetic flux passing through the inside of the first magnetic part 24, and the second detection unit 33 detects only the magnetic flux passing through the inside of the second magnetic part 32. On the other hand, when the first magnetic part 24 and the second magnetic part 32 are in contact, the first detection unit 25 and the second detection unit 33 each detect the magnetic flux passing through the inside of the first magnetic part 24 and the second magnetic part 32, respectively.

[0053] [1] Based on the above, the elevator rope tester 1 is as described in this embodiment. Main unit 2, An elevator rope tester 1 comprising a detachable body 3 that can be attached to the main body 2, The main body 2 is, A guide section 21a that guides the rope X1, A magnetization unit 23 for magnetizing the rope X1, The system includes a first magnetic section 24 that collects magnetic flux leaking from the rope X1, The detachable body 3 includes a second magnetic part 32 that collects magnetic flux leaking from the rope X1, The elevator rope tester 1 includes detection units 25 and 33 that detect magnetic flux passing through the first magnetic unit 24 and the second magnetic unit 32, The first magnetic portion 24 includes a first recess 24a arranged along the outer circumferential surface of the rope X1, The second magnetic portion 32 includes a second recess 32a arranged along the outer circumferential surface of the rope X1, The first recess 24a and the second recess 32a are arranged to sandwich the rope X1 in the direction of extension D1 of the rope X1, This configuration is preferable.

[0054] In this configuration, the first magnetic part 24 is provided with a first recess 24a arranged along the outer surface of the rope X1, and the second magnetic part 32 is provided with a second recess 32a arranged along the outer surface of the rope X1. When the detachable body 3 is attached to the main body 2, the first recess 24a and the second recess 32a are arranged to sandwich the rope X1 in the direction of extension D1.

[0055] As a result, not only can the magnetic flux leaked from the circumferential region of the rope X1 where the first recess 24a is located be collected by the first recess 24a, but the magnetic flux leaked from the circumferential region of the rope X1 where the second recess 32a is located can also be collected by the second recess 32a. Therefore, the circumferential region of the rope X1 in which leaked magnetic flux can be detected can be widened.

[0056] [2] Furthermore, in the elevator rope tester 1 described in [1] above, as in this embodiment, The attachment mechanism 5 is provided for attaching and detaching the attachment body 3 to the main body 2. The attachment / detachment mechanism 5 includes an elastic part 52 that elastically deforms when an external force is applied to the attachment / detachment body 3, thereby separating the attachment / detachment body 3 from the main body 2. This configuration is preferable.

[0057] With this configuration, when an external force is applied to the detachable body 3, the elastic part 52 undergoes elastic deformation, causing the detachable body 3 to detach from the main body 2. This allows the detachable body 3 to be detached from the main body 2 when an external force is applied to the detachable body 3 from the rope X1.

[0058] [3] Furthermore, in the elevator rope tester 1 described in [2] above, as in this embodiment, The detachable body 3 is attached to the main body 2 such that it separates from the rope X1 when the rope X1 is guided by the guide portion 21a. This configuration is preferable.

[0059] With this configuration, when the rope X1 is guided by the guide portion 21a, the attachment body 3 is attached to the main body 2 but is separated from the rope X1. This prevents external force from being applied from the rope X1 to the attachment body 3.

[0060] [4] Furthermore, in the elevator rope tester 1 described in [2] or [3] above, as in this embodiment, The system includes a string-like body 4 that connects the main body 2 and the detachable body 3. This configuration is preferable.

[0061] With this configuration, since the string-like body 4 connects the main body 2 and the detachable body 3, when an external force is applied to the detachable body 3 and the detachable body 3 detaches from the main body 2, it is possible to prevent the detachable body 3 from moving too far away from the main body 2.

[0062] [5] Furthermore, in any one of the elevator rope testers 1 described in [1] to [4] above, as in this embodiment, The first recess 24a and the second recess 32a are arranged to be continuous over the entire circumference of the rope X1 in the extension direction D1. This configuration is preferable.

[0063] With this configuration, in view of the extension direction D1, the first recess 24a and the second recess 32a are continuously arranged around the entire circumference of the rope X1. As a result, the magnetic flux leaked from the entire circumference of the rope X1 can be collected by the first recess 24a and the second recess 32a, so that the circumferential region of the rope X1 in which leaked magnetic flux can be detected can be made to cover the entire circumference of the rope X1.

[0064] [6] Furthermore, in any one of the elevator rope testers 1 described in [1] to [5] above, as in this embodiment, The detachable body 3 is attached to the main body 2 such that the second recess 32a is in contact with the first recess 24a. The detection units 25 and 33 are A first detection unit 25 detects the magnetic flux passing through the inside of the first magnetic part 24, The system includes a second detection unit 33 that detects the magnetic flux passing through the interior of the second magnetic unit 32, This configuration is preferable.

[0065] With this configuration, when the detachable body 3 is attached to the main body 2, the second recess 32a comes into contact with the first recess 24a. As a result, in view in the extending direction D1, the first recess 24a and the second recess 32a are arranged continuously around the entire circumference of the rope X1. Therefore, the magnetic flux leaking from the entire circumference of the rope X1 can be reliably collected by the first recess 24a and the second recess 32a.

[0066] Furthermore, since the first detection unit 25 detects the magnetic flux passing through the first magnetic part 24 and the second detection unit 33 detects the magnetic flux passing through the second magnetic part 32, the magnetic flux flowing through the respective magnetic parts 24 and 32 can be detected by the respective detection units 25 and 33, whether the first magnetic part 24 and the second magnetic part 32 are in contact or separated.

[0067] It should be noted that the elevator rope tester 1 is not limited to the configuration of the embodiment described above, nor is it limited to the effects and benefits described above. Furthermore, it goes without saying that the elevator rope tester 1 can be modified in various ways without departing from the spirit of the present invention. For example, one or more of the configurations and methods described below may be arbitrarily selected and adopted in the configurations and methods of the embodiment described above.

[0068] (A) In the elevator rope tester 1 according to the above embodiment, the attachment / detachment mechanism 5 is configured to include an elastic part 52 that elastically deforms when an external force is applied to the attachment / detachment body 3, thereby detaching the attachment / detachment body 3 from the main body 2. However, the elevator rope tester 1 is not limited to this configuration.

[0069] For example, the attachment / detachment mechanism 5 may be configured to include a fixing mechanism that secures the attachment / detachment body 3 to the main body 2, and by operating and releasing the fixing mechanism, the attachment / detachment body 3 can be detached from the main body 2, while maintaining the attachment / detachment body 3's fixation to the main body 2 even when an external force is applied to the attachment / detachment body 3 from the rope X1. Although not particularly limited, for example, the fixing mechanism may be configured to include a bolt that is inserted through a through hole in the attachment / detachment body 3 and screwed into a female screw hole in the main body 2.

[0070] (B) In addition, in the elevator rope tester 1 according to the above embodiment, the detachable body 3 separates from the rope X1 when the rope X1 is guided by the guide portion 21a of the main body 2. However, the elevator rope tester 1 is not limited to this configuration.

[0071] For example, the detachable body 3 may be in contact with the rope X1 when the rope X1 is guided by the guide portion 21a of the main body 2. In such a configuration, for example, the bottom of the second groove 31a of the detachable body 3 may constitute a guide portion that guides the rope X1.

[0072] (C) Furthermore, the elevator rope tester 1 according to the above embodiment is configured to include a string-like body 4 that connects the main body 2 and the detachable body 3. However, the elevator rope tester 1 is not limited to this configuration. For example, the elevator rope tester 1 may be configured not to include a string-like body 4, and the detachable body 3, once detached from the main body 2, is completely free from the main body 2.

[0073] (D) In ​​addition, in the elevator rope tester 1 according to the above embodiment, the first recess 24a and the second recess 32a are arranged to be continuous over the entire circumference of the rope X1 when viewed in the extension direction D1. However, the elevator rope tester 1 is not limited to this configuration. For example, the first recess 24a and the second recess 32a may be arranged to be separated when viewed in the extension direction D1.

[0074] (E) In addition, in the elevator rope tester 1 according to the above embodiment, the second recess 32a comes into contact with the first recess 24a when the detachable body 3 is attached to the main body 2. However, the elevator rope tester 1 is not limited to this configuration.

[0075] For example, when the detachable body 3 is attached to the main body 2, the second recess 32a may be separated from the first recess 24a. In such a configuration, while the second recess 32a is separated from the first recess 24a in the extension direction D1, the first recess 24a and the second recess 32a may be arranged to be continuous around the entire circumference of the rope X1 when viewed in the extension direction D1.

[0076] (F) In addition, in the elevator rope tester 1 according to the above embodiment, the main body 2 is equipped with a first detection unit 25 that detects the magnetic flux passing through the first magnetic part 24, and the detachable body 3 is equipped with a second detection unit 33 that detects the magnetic flux passing through the second magnetic part 32. However, the elevator rope tester 1 is not limited to this configuration. For example, either the main body 2 or the detachable body 3 may be equipped with a detection unit 25 (33) that detects the magnetic flux passing through the first magnetic part 24 and the second magnetic part 32.

[0077] (G) In addition, in the elevator rope tester 1 according to the above embodiment, the hooking part 51 and the elastic part 52 are separate components. Specifically, the hooking part 51 is a sphere, and the elastic part 52 is a spring. However, the elevator rope tester 1 is not limited to this configuration.

[0078] For example, the hook portion 51 and the elastic portion 52 may be a single component. Although not particularly limited, one example of such a configuration is shown in Figure 10. For example, in the elevator rope tester 1 shown in Figure 10, the elastic portion 52 may be a leaf spring extending from the main body 2 in a second direction D2 and elastically deformable in a third direction D3, and the hook portion 51 may be formed at the end of the leaf spring.

[0079] With this configuration, the hook portion 51 is inserted into the hole 36 of the detachable body 3 and hooks onto the hole 36, thereby attaching the detachable body 3 to the main body 2 and positioning it on the main body 2. On the other hand, when an external force is applied from the rope X1 to the detachable body 3, the elastic portion 52 receives the external force from the hook portion 51 and elastically deforms in the third direction D3. As a result, the hook portion 51 releases its hook onto the hole 36, and the detachable body 3 detaches from the main body 2.

[0080] (H) Alternatively, for example, in the elevator rope tester 1, the detachable body 3 may consist only of the second recess 32a of the second magnetic part 32. In such a configuration, for example, the second recess 32a of the second magnetic part 32 may be attached to and detached from the first recess 24a of the first magnetic part 24.

[0081] (I) For example, the execution order of each step, such as the operation, procedure, step, and stage, in the method and apparatus shown in the claims, specification, and drawings can be carried out in any order, as long as the result of the previous step is not used in the later step. For example, even if "first," "next," etc. are used for convenience in the explanation, it does not mean that it is necessary to perform them in that order. [Explanation of symbols]

[0082] 1...Elevator rope tester, 2...Main body, 3...Detachable part, 4...String-like body, 5...Detachable mechanism, 21...First groove, 21a...Guide part, 22...Gripping part, 23...Magnetization part, 23a...First magnet, 23b...Second magnet, 23c...Magnetic path part, 24...First magnetic part, 24a...First recess, 24b...First connection part, 25...First detection part, 26...First non-magnetic part, 27...Hole, 28...First engagement part, 3 1...Insertion part, 31a...Second groove, 32...Second magnetic part, 32a...Second recess, 32b...Second connection part, 33...Second detection part, 34...Second non-magnetic part, 35...Second engagement part, 36...Hole, 51...Hooking part, 52...Elastic part, D1...First direction (extension direction, groove length direction), D2...Second direction (first radial direction, groove depth direction), D3...Third direction (second radial direction, groove width direction), X1...Rope

Claims

1. The main unit and An elevator rope tester comprising a detachable body that can be attached to the main body, The aforementioned main body is A guide section that directs the rope, A magnetizing unit for magnetizing the aforementioned rope, It comprises a first magnetic unit that collects magnetic flux leaking from the rope, The detachable body includes a second magnetic part that collects magnetic flux leaking from the rope, The elevator rope tester includes a detection unit that detects the magnetic flux passing through the first magnetic part and the second magnetic part, The first magnetic portion includes a first recess arranged along the outer surface of the rope, The second magnetic portion includes a second recess arranged along the outer surface of the rope, The first recess and the second recess are arranged to sandwich the rope in a view in the direction of extension of the rope, in an elevator rope tester.

2. The system includes a detachment mechanism for attaching and detaching the detachable body to the main body, The elevator rope tester according to claim 1, wherein the attachment / detachment mechanism includes an elastic part that elastically deforms when an external force is applied to the attachment / detachment body, thereby detaching the attachment / detachment body from the main body.

3. The elevator rope tester according to claim 2, wherein the detachable body is attached to the main body such that it separates from the rope when the rope is guided by the guide portion.

4. An elevator rope tester according to claim 2 or 3, comprising a string-like body for connecting the main body and the detachable body.

5. The elevator rope tester according to any one of claims 1 to 3, wherein the first recess and the second recess are arranged to be continuous over the entire circumference of the rope in the direction of extension.

6. The detachable body is attached to the main body such that the second recess contacts the first recess. The detection unit is A first detection unit for detecting the magnetic flux passing through the interior of the first magnetic part, The elevator rope tester according to claim 5, further comprising a second detection unit for detecting the magnetic flux passing through the interior of the second magnetic part.

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