Elevator rope tester

Abstract

To provide an elevator rope tester capable of widening a circumferential area of ​​a 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 and detached from the main body, wherein the main body comprises a guide section that guides the rope, a magnetizing section that magnetizes the rope, and a first magnetic section that collects magnetic flux leaking from the rope, and the detachable body comprises a second magnetic section that collects magnetic flux leaking from the rope, and the elevator rope tester comprises a detection section that detects magnetic flux passing through the first and second magnetic sections, wherein the first magnetic section comprises a first recess that is arranged along the outer surface of the rope, and the second magnetic section comprises a second recess that is arranged along the outer surface of the rope, and the first recess and second recess are arranged to sandwich the rope when viewed in the extension direction of the rope.

Description

[Technical Field]

[0001] The present specification relates to an elevator rope tester. [Background technology]

[0002] Conventionally, for example, an elevator rope tester includes a guide section that guides the rope, a magnetizing section that magnetizes the rope, a magnetic section that collects magnetic flux leaking from the rope, and a detection section that detects the magnetic flux passing through the magnetic section (for example, Patent Document 1). The magnetic section includes a recess that is arranged along the outer circumferential surface of the rope.

[0003] In the elevator rope tester disclosed in Patent Document 1, the magnetic flux leaking from the area of ​​the rope where the recessed portion is located is easily collected by the magnetic portion, so the detection unit can detect the magnetic flux leaking from the circumferential area of ​​the rope where the recessed portion is located. On the other hand, the magnetic portion has difficulty collecting the magnetic flux leaking from the area of ​​the rope away from the recessed portion, so there is a risk that the detection unit will not be able to detect the magnetic flux leaking from the circumferential area of ​​the rope away from the recessed portion. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2022-155849 Summary of the Invention [Problem to be solved by the invention]

[0005] Therefore, an object of the present invention is to provide an elevator rope tester that can widen the circumferential area of ​​the rope in which leaked magnetic flux can be detected. [Means for solving the problem]

[0006] Elevator rope testers are The main body and An elevator rope tester comprising: a detachable body that is detachable from the main body; The body includes: a guide section for guiding the rope; a magnetizing unit that magnetizes the rope; a first magnetic portion that collects magnetic flux leaking from the rope; The detachable body includes a second magnetic portion that collects magnetic flux leaking from the rope, The elevator rope tester includes a detection unit that detects magnetic flux passing through the first magnetic portion and the second magnetic portion, The first magnetic portion includes a first recess disposed along an outer circumferential surface of the rope, The second magnetic portion includes a second recess disposed along the outer circumferential surface of the rope, The first recess and the second recess are arranged to sandwich the rope when viewed in the extending direction of the rope. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a perspective view of an elevator rope tester according to one embodiment; [Figure 2] FIG. 1 is a front view of an elevator rope tester according to the embodiment; [Figure 3] Front view of the main body according to the present embodiment [Figure 4] FIG. 1 is a perspective view of a main body according to the embodiment; [Figure 5] FIG. 10 is a front view of the detachable body according to the embodiment; [Figure 6] FIG. 10 is a perspective view of the detachable body according to the embodiment; [Figure 7] 7A and 7B are cross-sectional views of the main part taken along line VII-VII in FIG. 2 (a: a view showing the detachable body attached to the main body, and b: a view showing the detachable body detached from the main body). [Figure 8] FIG. 1 is a plan view of a main part of an elevator rope tester according to the embodiment; [Figure 9] 1A, 1B, and 1C are diagrams showing a magnetic part according to the embodiment (a: front view, b: perspective view, c: perspective view). [Figure 10] 1 is a perspective view of an elevator rope tester according to another embodiment; DETAILED DESCRIPTION OF THE INVENTION

[0008] In each drawing, the dimensions of the components may be enlarged or reduced relative to the actual dimensions, for example, to facilitate understanding, and the dimensional ratios between the drawings may not be consistent. Note that in each drawing, for example, to facilitate understanding, some of the components may be omitted.

[0009] Terms including ordinal numbers such as "first" and "second" are used to describe various components, but these terms are used only to distinguish one component from another, and the components are not particularly limited by these terms. The number of components including ordinal numbers is not particularly limited, and may be, for example, one. Furthermore, the ordinal numbers used in the following specification and drawings may differ from the ordinal numbers described in the claims.

[0010] An embodiment of an elevator rope tester will be described below with reference to Figures 1 to 9. Note that the following embodiment is provided as an example to facilitate understanding of the configuration of the elevator rope tester, and is not intended to limit the configuration of the elevator rope tester.

[0011] 1 and 2, an elevator rope tester (hereinafter also simply referred to as a "rope tester") 1 is used, for example, to inspect an elevator rope X1 used in an elevator. Note that, for example, the rope tester 1 may inspect a running rope X1, or, for example, the rope tester 1 may inspect the rope X1 by moving relative to a stationary rope X1.

[0012] The rope tester 1 includes a main body 2, a detachable body 3 that is detachable from the main body 2, and a string-like body 4 that connects the main body 2 and the detachable body 3. The rope tester 1 also includes a detachment mechanism 5 that attaches and detaches the detachable body 3 to the main body 2. Note that the main body 2 and the detachable body 3 may be arranged to sandwich the rope X1 to be tested in the radial direction of the rope X1, as in this embodiment, for example.

[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 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 radial direction of the rope X1 to be inspected that is perpendicular to the second direction D2 (also referred to as the "second radial direction"). Note that the first to third directions D1 to D3 are directions that are perpendicular to one another.

[0014] The string-like body 4 may be, for example, a deformable long body, and may be configured such that each end is connected to the main body 2 and the detachable body 3. Although not particularly limited, the string-like 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] 1 to 4, the main body 2 may include, for example, a first groove 21 extending in a first direction (also referred to as "groove length direction") D1 so that the rope X1 can be inserted therein, and a gripping portion 22 to be gripped. For example, as in this 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] For example, the rope tester 1 may be used by holding the gripping portion 22 of the main body 2, or the rope tester 1 may be used by fixing the gripping portion 22 of the main body 2 to the elevator device or the main body with a tool or the like. In addition, in Figures 3 and 4, the enlarged views of the dashed line areas show internal views.

[0017] The first groove 21 may have, for example, as in this embodiment, a pair of groove side portions separated in the third direction (also referred to as the "groove width direction") D3 and a groove bottom portion connecting the pair of groove side portions. As a result, the first groove 21 is open in the second direction (also referred to as the "groove depth direction") D2. The main body 2 has a guide portion 21a that guides the rope X1. The guide portion 21a may be formed, for example, at the groove bottom portion of the first groove 21 as in this embodiment.

[0018] 3 and 4, the main body 2 includes a magnetizing section 23 that magnetizes the rope X1, a first magnetic section 24 that collects (captures) magnetic flux leaking from the magnetized rope X1, and a first detection section 25 that detects the magnetic flux passing through the inside of the first magnetic section 24. Note that, although not particularly limited, the first detection section 25 may be, for example, any of various magnetic sensors (for example, a Hall element or a coil) that convert the magnitude of the magnetic flux (for example, the magnitude of the magnetic flux density) into the magnitude of a voltage (current).

[0019] For example, as in the present embodiment, the magnetized portion 23 may include a first magnet 23a, a second magnet 23b, and a magnetic path portion 23c that magnetically connects the first magnet 23a and the second magnet 23b. As a result, the first magnet 23a, the second magnet 23b, and the magnetic path portion 23c can configure a looped magnetic circuit by cooperating with the rope X1.

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

[0021] The first magnetic portion 24 has first recesses 24a, 24a arranged along the outer peripheral surface of the rope X1 to be inspected. As a result, the first recess 24a forms part of the first groove 21. Also, for example, as in this embodiment, the main body 2 may have a first non-magnetic portion 26 having a magnetic permeability lower than that of the first magnetic portion 24, and the first groove 21 may be configured by the first recess 24a and the first non-magnetic portion 26.

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

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

[0024] Furthermore, for example, as in the present embodiment, the first magnetic portion 24 may include a first connection portion 24b that magnetically connects the first recess 24a and the first detection portion 25. As a result, the first detection portion 25 detects the magnetic flux passing through the inside of the first magnetic portion 24, and therefore the first detection portion 25 can detect the magnetic flux leaking from the magnetized rope X1.

[0025] The main body 2 may output, for example, 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 a wired or wireless connection. Note that the first connection portion 24b and the first detection unit 25 may be in contact with each other, or may be separated from each other with a gap therebetween.

[0026] Furthermore, for example, as in the present embodiment, a configuration may be adopted in which the pair of first recesses 24a, 24a are spaced apart in the first direction D1, and the pair of first connecting portions 24b, 24b sandwich the first detecting unit 25 in the first direction D1. In this way, when a broken portion of rope X1 is located between the first recesses 24a, 24a, magnetic flux leaking from the broken portion is collected by the first magnetic unit 24, and the first detecting unit 25 detects the magnetic flux passing inside the first magnetic unit 24 (between the first connecting portions 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. Furthermore, the insertion portion 31 may be disposed 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 views of the dashed-dotted line areas show internal views.

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

[0029] The second magnetic portion 32 includes second recesses 32a, 32a arranged along the outer peripheral surface of the rope X1 to be inspected. As a result, the second recess 32a forms part of the second groove 31a. Also, for example, as in this embodiment, the detachable body 3 may include a second non-magnetic portion 34 having a magnetic permeability lower than that of the second magnetic portion 32, and the second groove 31a may be configured by the second recess 32a and the second non-magnetic portion 34.

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

[0031] Furthermore, for example, as in this embodiment, the second magnetic portion 32 may include a second connection portion 32b that magnetically connects the second recess 32a and the second detection portion 33. This allows the second detection portion 33 to detect magnetic flux passing through the inside of the second magnetic portion 32, and therefore the second detection portion 33 can detect magnetic flux leaking from the magnetized rope X1.

[0032] The detachable body 3 may output, for example, 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 a wired or wireless connection. Note that, for example, the second connection unit 32b and the second detection unit 33 may be in contact with each other, or may be separated from each other with a gap therebetween.

[0033] Furthermore, for example, as in this embodiment, a configuration may be adopted in which the pair of second recesses 32a, 32a are spaced apart in the first direction D1, and the pair of second connecting portions 32b, 32b sandwich the second detecting portion 33 in the first direction D1. In this way, when a broken portion of the rope X1 is located between the second recesses 32a, 32a, magnetic flux leaking from the broken portion is collected by the second magnetic portion 32, and the second detecting portion 33 detects the magnetic flux passing inside the second magnetic portion 32 (between the second connecting portions 32b, 32b).

[0034] 3 to 6, the detachable mechanism 5 may be configured, for example, to include a hole 27 in the main body 2 and a hook 51 that is disposed on the detachable body 3 and hooks onto the hole 27. Specifically, for example, as in this embodiment, the hook 51 may be a sphere that partially protrudes in the third direction D3 from the insertion portion 31 of the detachable body 3, and the hole 27 may have a circular opening in the first groove 21 of the main body 2 (specifically, a groove side portion) and be recessed in the third direction D3.

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

[0036] Also, for example, as in this embodiment, the main body 2 may be configured to include a first engagement portion 28, and the detachable body 3 may be configured to include a second engagement portion 35 that engages with the first engagement portion 28. And, for example, as in this embodiment, the first engagement 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 engagement 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 engagement portion 35 is guided by the first engagement portion 28 and fits into the first engagement portion 28, and the second engagement portion 35 engages with the first engagement portion 28, thereby positioning the detachable body 3 on the main body 2. Therefore, the hook portion 51 can be easily inserted into the hole portion 27, and the detachable body 3 can be easily attached to the main body 2, for example. In this manner, in the present embodiment, the hook portion 51, the hole portion 27, the first engagement portion 28, and the second engagement portion 35 constitute a positioning mechanism that positions the detachable body 3 on the main body 2.

[0038] 7, the detachable mechanism 5 includes an elastically deformable elastic part 52. The elastic part 52 may be arranged inside the detachable body 3, for example, as in this embodiment, and may be configured 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 elastic portion 52 elastically deforms in the third direction D3, thereby changing the amount by which the hook portion 51 protrudes from the detachable body 3. Therefore, the detachable body 3 can be attached to and detached from the main body 2 by the detachment mechanism 5. Although not particularly limited, the elastic portion 52 may be, for example, a spring as in this embodiment.

[0040] Incidentally, for example, if the cut portion of the rope X1 protrudes from the outer circumferential surface of the rope X1, there is a risk that the cut portion will come into contact with the detachable body 3. If the cut portion comes into contact with the detachable body 3, an external force will be applied from the cut portion to the detachable body 3. As a result, the elastic portion 52 receives the external force via the hook portion 51, and is compressed and elastically deformed in the third direction D3. Therefore, the hook portion 51 is released from the hole portion 27, and the detachable body 3 is detached 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 prevent the detachable body 3 from being subjected to a large external force, and therefore it is possible to prevent, for example, the detachable body 3 from damaging the rope X1 or the rope X1 from damaging the detachable body 3.

[0042] Furthermore, because the string-like body 4 (see FIGS. 1 and 2) connects the main body 2 and the detachable body 3, when the detachable body 3 is detached from the main body 2, it is possible to prevent the detachable body 3 from moving too far away from the main body 2. This makes it possible to prevent, for example, the detachable body 3 that has been detached from the main body 2 from falling to the ground and receiving an impact, and also makes it possible to prevent, for example, the whereabouts of the detachable body 3 that has been detached from the main body 2 from becoming unknown.

[0043] 7(a), when the detachable body 3 is attached to the main body 2 and the rope X1 is guided by (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 spaced apart from the rope X1. This makes it possible to prevent external force from being applied to the detachable body 3 from the rope X1.

[0044] Therefore, for example, it is possible to prevent the detachable body 3 from being unnecessarily detached from the main body 2. Although not particularly limited, when the rope X1 is guided by the guide portion 21a of the main body 2, the distance by which the detachable body 3 (specifically, the second groove 31a of the insertion portion 31) is separated from the rope X1 may be, for example, 1 mm to 3 mm.

[0045] 8 and 9, when the detachable body 3 is attached to the main body 2 so that the rope X1 is sandwiched between the main body 2 and the detachable body 3, the first recess 24a and the second recess 32a are arranged to sandwich the rope X1 when viewed in the first direction D1. Note that in Fig. 8, the enlarged view of the area enclosed by the dashed dotted line shows an internal view.

[0046] As a result, not only can the first recessed portion 24a collect the magnetic flux leaking from the circumferential region of the rope X1 where the first recessed portion 24a is arranged, but the second recessed portion 32a can also collect the magnetic flux leaking from the circumferential region of the rope X1 where the second recessed portion 32a is arranged. The collected magnetic flux is then detected by the detection units 25 and 33, so the circumferential region of the rope X1 where the leaked magnetic flux can be detected can be widened.

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

[0048] As a result, magnetic flux leaking from the entire circumferential region of the rope X1 can be collected by the first recess 24a and the second recess 32a. The collected magnetic flux can then be detected by the first detection unit 25 and the second detection unit 33, so that the circumferential region of the rope X1 in which leaked magnetic flux can be detected can be the entire circumferential region of the rope X1. Therefore, for example, by testing the rope X1 only once with the rope tester 1, the inspection of the rope X1 can be completed.

[0049] When the rope X1 is guided by the guide portion 21a of the main body 2, the first recessed portion 24a and the second recessed portion 32a may be separated from the rope X1 to an extent that they can collect magnetic flux leaking from the rope X1, or 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 that the first recessed portion 24a and the second recessed portion 32a are separated from the outer peripheral 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 inside of the first magnetic part 24, and the second detection unit 33 detects the magnetic flux passing through the inside of the second magnetic part 32. As a result, whether the first magnetic part 24 and the second magnetic part 32 are in contact with each other or separated from each other, the magnetic flux flowing through the inside of each magnetic part 24, 32 can be detected by the respective detection units 25, 33.

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

[0052] When the first magnetic part 24 and the second magnetic part 32 are separated, the first detection part 25 detects only the magnetic flux passing through the inside of the first magnetic part 24, and the second detection part 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 with each other, the first detection part 25 and the second detection part 33 each detect the magnetic flux passing through the inside of the first magnetic part 24 and the second magnetic part 32.

[0053] [1] As described above, the elevator rope tester 1, as in this embodiment, Main unit 2 and An elevator rope tester 1 comprising a detachable body 3 that is detachable from the main body 2, The main body 2 is A guide portion 21a that guides the rope X1; a magnetizing unit 23 that magnetizes the rope X1; a first magnetic portion 24 that collects magnetic flux leaking from the rope X1; The detachable body 3 includes a second magnetic portion 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 portion 24 and the second magnetic portion 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 when viewed in an extension direction D1 in which the rope X1 extends. This configuration is preferable.

[0054] According to this configuration, the first magnetic portion 24 has a first recess 24a arranged along the outer peripheral surface of the rope X1, and the second magnetic portion 32 has a second recess 32a arranged along the outer peripheral 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 when viewed in the extension direction D1 in which the rope X1 extends.

[0055] As a result, not only can the first recessed portion 24a collect the magnetic flux leaking from the circumferential region of the rope X1 where the first recessed portion 24a is arranged, but the second recessed portion 32a can also collect the magnetic flux leaking from the circumferential region of the rope X1 where the second recessed portion 32a is arranged. Therefore, the circumferential region of the rope X1 where the leaked magnetic flux can be detected can be widened.

[0056] [2] In addition, in the elevator rope tester 1 described above in [1], as in this embodiment, a detachment mechanism 5 for attaching and detaching the detachable body 3 to and from the main body 2; The detachable mechanism 5 includes an elastic portion 52 that elastically deforms when an external force is applied to the detachable body 3, thereby detaching the detachable body 3 from the main body 2. This configuration is preferable.

[0057] According to this configuration, when an external force is applied to the detachable body 3, the elastic portion 52 is elastically deformed, and the detachable body 3 is detached from the main body 2. As a result, when an external force is applied to the detachable body 3 from the rope X1, the detachable body 3 can be detached from the main body 2.

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

[0059] According to this configuration, when the rope X1 is guided by the guide portion 21a, the detachable body 3 is separated from the rope X1 while being attached to the main body 2. This makes it possible to suppress the application of external force from the rope X1 to the detachable body 3.

[0060] [4] In addition, in the elevator rope tester 1 described above in [2] or [3], as in this embodiment, A string-like body 4 is provided to connect the main body 2 and the detachable body 3. This configuration is preferable.

[0061] According to this configuration, the string-like body 4 connects the main body 2 and the detachable body 3, so that when an external force is applied to the detachable body 3 and the detachable body 3 detaches from the main body 2, the detachable body 3 can be prevented from moving too far away from the main body 2.

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

[0063] According to this configuration, the first recessed portion 24a and the second recessed portion 32a are disposed continuously around the entire circumference of the rope X1 when viewed in the extension direction D1, and therefore the first recessed portion 24a and the second recessed portion 32a are disposed around the entire circumference of the rope X1. This allows magnetic flux leaking from an area around the entire circumference of the rope X1 to be collected by the first recessed portion 24a and the second recessed portion 32a, and therefore the circumferential area of ​​the rope X1 in which leaked magnetic flux can be detected can be the area around the entire circumference of the rope X1.

[0064] [6] In addition, in any one of the elevator rope testers 1 described above in [1] to [5], as in this embodiment, The detachable body 3 is attached to the main body 2 so that the second recess 32a contacts the first recess 24a, The detection units 25 and 33 are a first detection unit 25 that detects magnetic flux passing through the inside of the first magnetic unit 24; and a second detection unit 33 that detects magnetic flux passing through the second magnetic unit 32. This configuration is preferable.

[0065] According to 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, the first recess 24a and the second recess 32a are arranged continuously around the entire circumference of the rope X1 when viewed in the extension direction D1. Therefore, 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] The first detection unit 25 detects the magnetic flux passing through the inside of the first magnetic part 24, and the second detection unit 33 detects the magnetic flux passing through the inside of the second magnetic part 32, so whether the first magnetic part 24 and the second magnetic part 32 are in contact or separated, the magnetic flux flowing through the inside of each magnetic part 24, 32 can be detected by each detection unit 25, 33.

[0067] The elevator rope tester 1 is not limited to the configuration of the above-described embodiment, nor is it limited to the above-described effects. Furthermore, various modifications can be made to the elevator rope tester 1 without departing from the spirit of the present invention. For example, it is possible to arbitrarily select one or more of the configurations, methods, etc. of the various modified examples described below and adopt them in the configurations, methods, etc. of the above-described embodiment.

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

[0069] For example, the detachable mechanism 5 may include a fixing mechanism that fixes the detachable body 3 to the main body 2, and the fixing mechanism may be operated to release the fixing, thereby allowing the detachable body 3 to be detached from the main body 2, while maintaining the fixation of the detachable body 3 to the main body 2 even when an external force is applied to the detachable body 3 from the rope X1. Although not particularly limited, for example, the fixing mechanism may include a bolt that is inserted into a through hole of the detachable body 3 and threaded into a female screw hole of the main body 2.

[0070] (B) Furthermore, in the elevator rope tester 1 according to the above embodiment, the detachable body 3 is configured to separate 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 such a configuration.

[0071] For example, the detachable body 3 may be configured to come into 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 groove bottom of the second groove 31a of the detachable body 3 may be configured to form the 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 that has been detached from the main body 2 may be 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 so as to be continuous over the entire circumference of the rope X1 as 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 so as to be spaced apart as viewed in the extension direction D1.

[0074] (E) Furthermore, in the elevator rope tester 1 according to the above embodiment, the second recess 32a is configured to contact 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 such a configuration.

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

[0076] (F) Furthermore, 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 magnetic flux passing through the inside of the first magnetic part 24, and the detachable body 3 is equipped with a second detection unit 33 that detects magnetic flux passing through the inside of 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 magnetic flux passing through the inside of 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 hook portion 51 and the elastic portion 52 are separate members. Specifically, the hook portion 51 is a sphere, and the elastic portion 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 configured as a single member. Although not particularly limited, an example of such a configuration may be the configuration shown in Fig. 10. For example, in the elevator rope tester 1 shown in Fig. 10, the elastic portion 52 may be a leaf spring that extends from the main body 2 in the second direction D2 and is elastically deformable in the third direction D3, and the hook portion 51 may be configured as an end of the leaf spring.

[0079] According to this configuration, the hooking portion 51 is inserted into and hooked into the hole 36 of the detachable body 3, whereby the detachable body 3 is attached to the main body 2 and is positioned relative to the main body 2. Meanwhile, when an external force is applied to the detachable body 3 from the rope X1, the elastic portion 52 receives the external force from the hooking portion 51 and is elastically deformed in the third direction D3. As a result, the hooking portion 51 is released from the hole 36, and the detachable body 3 is detached from the main body 2.

[0080] (H) Furthermore, for example, in the elevator rope tester 1, the detachable body 3 may be configured to 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 configured to be detachably attached to the first recess 24a of the first magnetic part 24.

[0081] (I) For example, the order of execution of each step, such as the operations, procedures, steps, and stages, in the methods and apparatuses shown in the claims, specifications, and drawings, can be implemented in any order, as long as the result of a previous step is not used in a subsequent step. For example, even if a description is made using "first," "next," etc. for convenience, this does not mean that the steps must be executed in that order. [Explanation of symbols]

[0082] 1...Elevator rope tester, 2...Main body, 3...Detachable body, 4...String-like body, 5...Detachable mechanism, 21...First groove, 21a...Guide portion, 22...Holding portion, 23...Magnetized portion, 23a...First magnet, 23b...Second magnet, 23c...Magnetic path portion, 24...First magnetic portion, 24a...First recess, 24b...First connecting portion, 25...First detecting portion, 26...First non-magnetic portion, 27...Hole portion, 28...First engaging portion, 3 1...insertion portion, 31a...second groove, 32...second magnetic portion, 32a...second recess, 32b...second connection portion, 33...second detection portion, 34...second non-magnetic portion, 35...second engagement portion, 36...hole portion, 51...hook portion, 52...elastic portion, 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 body and An elevator rope tester comprising: a detachable body that is detachable from the main body; The body includes: a guide section for guiding the rope; a magnetizing unit that magnetizes the rope; a first magnetic portion that collects magnetic flux leaking from the rope; The detachable body includes a second magnetic portion that collects magnetic flux leaking from the rope, The elevator rope tester includes a detection unit that detects magnetic flux passing through the first magnetic portion and the second magnetic portion, The first magnetic portion includes a first recess disposed along an outer circumferential surface of the rope, The second magnetic portion includes a second recess disposed along an outer circumferential surface of the rope, The first recess and the second recess are arranged to sandwich the rope in a first radial direction of the rope when viewed in the extension direction of the rope, The elevator rope tester includes an attachment / detachment mechanism for attaching and detaching the detachable body to and from the main body, the detachable mechanism includes an elastic portion that elastically deforms when an external force is applied to the detachable body to detach the detachable body from the main body; the main body includes a first engagement portion formed in a concave shape that widens toward a tip end in the first radial direction, the detachable body includes a second engaging portion formed in a convex shape narrowing toward a tip in the first radial direction and fitted into the first engaging portion, The second engagement portion is guided in the first radial direction by the first engagement portion.

2. A main body, An elevator rope tester comprising: a detachable body that is detachable from the main body; The body includes: a guide section for guiding the rope; a magnetizing unit that magnetizes the rope; a first magnetic portion that collects magnetic flux leaking from the rope; The detachable body includes a second magnetic portion that collects magnetic flux leaking from the rope, The elevator rope tester includes a detection unit that detects magnetic flux passing through the first magnetic portion and the second magnetic portion, The first magnetic portion includes a first recess disposed along an outer circumferential surface of the rope, The second magnetic portion includes a second recess disposed along an outer circumferential surface of the rope, The first recess and the second recess are arranged to sandwich the rope in a first radial direction of the rope when viewed in the extension direction of the rope, The elevator rope tester includes an attachment / detachment mechanism for attaching and detaching the detachable body to and from the main body, the detachable mechanism includes an elastic portion that elastically deforms when an external force is applied to the detachable body to detach the detachable body from the main body; the detachable body is attached to the main body so that the second recess is in contact with the first recess, the first recess and the second recess each include a portion at a tip end portion in the first radial direction that contacts each other in the first radial direction, The first recess and the second recess are arranged so as to be continuous over the entire circumference of the rope when viewed in the extension direction, the second recess includes a portion that protrudes from the contact portion toward a tip end in the first radial direction, An elevator rope tester, wherein the protruding portion is positioned inside the first recess and overlaps with the first recess when viewed in a second radial direction perpendicular to the first radial direction.

3. 3. The elevator rope tester according to claim 1, wherein the detachable body is attached to the main body so as to be separated from the rope when the rope is guided by the guide section.

4. The elevator rope tester according to claim 1 or 2, further comprising a string-like body connecting the main body and the detachable body.

5. The detachable body is attached to the main body so that the second recess is in contact with the first recess, the first recess and the second recess each include a portion at a tip end portion in the first radial direction that contacts each other in the first radial direction, The first recess and the second recess are arranged so as to be continuous over the entire circumference of the rope when viewed in the extension direction, the second recess includes a portion that protrudes from the contact portion toward a tip end in the first radial direction, 2. The elevator rope tester according to claim 1, wherein the protruding portion is disposed inside the first recess and overlaps with the first recess when viewed in a second radial direction perpendicular to the first radial direction.

6. The detection unit a first detection unit that detects a magnetic flux passing through the first magnetic unit; The elevator rope tester according to claim 2 or 5, further comprising: a second detection unit that detects magnetic flux passing through the inside of the second magnetic portion.

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