Inspection equipment

Abstract

To facilitate inspection of wire ropes, etc. [Solution] The inspection device (1) comprises a first member (10) having a first end (11) and a second end (12), a second member (20) having a third end (21) parallel to and opposite the first end, and a fourth end (22) parallel to and opposite the second end, and a sliding mechanism (30). The first end, second end, third end, and fourth end form an inspection space (R) through which an object to be inspected (X) can pass, and the second member slides while maintaining a predetermined ratio between the distance between the first end and the third end and the distance between the second end and the fourth end.

Description

Technical Field

[0001] The present invention relates to an inspection device.

Background Art

[0002] Patent Document 1 discloses a rope gauge for detecting the shape deviation and crushing of a main rope used in an elevator. This rope gauge has a notch portion, and the notch portion has three portions with different widths. The widths are sequentially narrowed from the outer portion to the inner portion of the notch portion.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the prior art as described above, for example, it is not suitable for inspecting a wire rope where the load is concentrated in part. A wire rope used repeatedly can be partially deformed flat by the load. For example, when determining a wire rope with a ratio of the minor axis to the major axis (minor axis / major axis) below a predetermined value as a defective product, accurate measurement of the lengths of the minor axis and the major axis and calculation of their ratio were required to obtain the ratio. Therefore, it took time to determine defective products.

[0005] One aspect of the present disclosure aims to easily inspect a wire rope or the like.

Means for Solving the Problems

[0006] An inspection apparatus according to one aspect of the present disclosure comprises a first member having a first end and a second end, a second member having a third end parallel to and opposite to the first end, and a fourth end parallel to and opposite to the second end, and a sliding mechanism for sliding the second member relative to the first member, wherein the first end, second end, third end, and fourth end constitute an inspection space through which an object to be inspected can pass, and the second member slides while maintaining a predetermined ratio between the distance between the first end and the third end and the distance between the second end and the fourth end. [Effects of the Invention]

[0007] According to one aspect of this disclosure, inspections of wire ropes and the like can be easily performed. [Brief explanation of the drawing]

[0008] [Figure 1] This is a plan view of an inspection apparatus according to one embodiment of the present disclosure. [Figure 2] This is a plan view of a first member according to one embodiment of the present disclosure. [Figure 3] This is a plan view of a second member according to one embodiment of the present disclosure. [Figure 4] This is a cross-sectional view along the line IV-IV shown in Figure 1. [Figure 5] This is a plan view of an inspection apparatus according to another embodiment of the present disclosure. [Figure 6] This is a plan view of an inspection apparatus according to another embodiment of the present disclosure. [Modes for carrying out the invention]

[0009] [Embodiment 1] An inspection device 1 according to Embodiment 1 of this disclosure will be described in detail with reference to Figures 1 to 4. Figure 1 is a plan view of the inspection device 1. The inspection device 1 comprises a first member 10, a second member 20, and a sliding mechanism 30. Figure 1 also shows a cross-section of the object to be inspected, the object to be inspected, X. The object to be inspected X is a string-like or rod-like object such as a wire rope or a lifting wire. The object to be inspected X is assumed to be an object that has a partially elliptical cross-section. For example, a lifting wire, which normally has a circular cross-section, may deform into an elliptical shape in the part that comes into contact with a hook or the like during use.

[0010] The first member 10 is a member shown in Figure 1 as being positioned behind the second member 20. The first member 10 will be described using Figure 2. Figure 2 is a plan view of the first member 10. The first member 10 is a plate-shaped member. The first member 10 has a first end 11 and a second end 12.

[0011] The first end 11 and the second end 12 are ends provided on the edge of the first member 10. The first end 11 and the second end 12 are straight. The first end 11 and the second end 12 are connected to each other. In this embodiment, the angle between the first end 11 and the second end 12 is a right angle, but the angle between the first end 11 and the second end 12 may be curved. There may be another side that connects the first end 11 and the second end 12 diagonally. However, the first end 11 and the second end 12 form a recess.

[0012] The material of the first component 10 may be metal or resin, etc.

[0013] The second member 20 is shown in Figure 1 as being positioned in front of the first member 10. The second member 20 will be described using Figure 3. Figure 3 is a plan view of the second member 20. The second member 20 is a plate-shaped member. The second member 20 has a third end 21 and a fourth end 22. The third end 21 is parallel to and opposite the first end 11. The fourth end 22 is parallel to and opposite the second end 12.

[0014] The third end 21 and the fourth end 22 are the ends provided at the edge of the second member 20. The third end 21 and the fourth end 22 are linear. The third end 21 and the fourth end 22 are connected to each other. In the present embodiment, the angle between the third end 21 and the fourth end 22 is a right angle, but the angle between the third end 21 and the fourth end 22 may be curved. There may be another side that obliquely connects between the third end 21 and the fourth end 22. However, the third end 21 and the fourth end 22 constitute a recess.

[0015] The material of the second member 20 may be metal, resin, or the like.

[0016] The slide mechanism 30 slides the second member 20 with respect to the first member 10. In Embodiment 1, the slide mechanism 30 is provided integrally with the first member 10 and the second member 20. The slide mechanism 30 may be any mechanism, for example, a mechanism composed of a long hole and a pin, or a mechanism that slides members extending in one direction like calipers. In Embodiment 1, the slide mechanism 30 having a long hole and a pin will be described.

[0017] The slide mechanism 30 is located at both ends of the first member 10 and the second member 20. The slide mechanism 30 includes three pins 31, a long hole 32, and three pin holes 33. The long hole 32 is a through hole formed in the first member 10. The long hole 32 extends in the sliding direction.

[0018] The pin holes 33 are through holes formed in the second member 20. The pin holes 33 may be circular, and the diameter of the pin holes 33 is smaller than the width (minor diameter) of the long hole 32. Also, the long hole 32 and the pin holes 33 are provided so that the long hole 32 and the pin holes 33 overlap when the first member 10 and the second member 20 are overlapped.

[0019] Pin 31 is a cylindrical pin that penetrates the long hole 32. The pin 31 is attached to the position of the pin hole 33 of the second member 20 by, for example, a bolt (not shown) that penetrates the pin hole 33. The diameter of the pin 31 is substantially the same as the width of the long hole 32. Therefore, the rattling between the first member 10 and the second member 20 is reduced.

[0020] As shown in FIG. 1, the first member 10 and the second member 20 partially overlap each other. Also, the third end 21 is parallel and opposed to the first end 11, and the fourth end 22 is parallel and opposed to the second end 12. Thus, the first end 11, the second end 12, the third end 21, and the fourth end 22 constitute an inspection space R. The inspection space R is a space through which the inspection object X can pass, and the inspection space R is also a space formed between the first member 10 and the second member 20. The inspection space R is a hole surrounded by the first end 11, the second end 12, the third end 21, and the fourth end 22. Note that the inspection space R does not necessarily have to be a hole. Also, although the inspection space R is configured as a rectangle in FIG. 1, it is not limited to a rectangle and may be a parallelogram. The corners of the inspection space R may be curved, and the shape is not limited. However, in order to inspect the widths of the inspection object X in two orthogonal directions, the first end 11 and the second end 12 are preferably substantially perpendicular.

[0021] The second member 20 slides while maintaining the ratio of the distance between the first end 11 and the third end 21 and the distance between the second end 12 and the fourth end 22 at a predetermined ratio. The predetermined ratio is arbitrarily set according to the standard of good products of the inspection object X. For example, if the ratio of the short axis to the long axis (short axis / long axis) of the inspection object X is greater than the predetermined ratio, it is regarded as a good product, and if it is below the predetermined ratio, it is regarded as a defective product. The predetermined ratio is less than 1.

[0022] Here, the inspection of the inspection object X will be exemplarily described using FIG. 1. The inspection object X is arranged in the inspection space R such that the short axis is perpendicular to the first end 11 and the third end 21, and the long axis is perpendicular to the second end 12 and the fourth end 22. Next, when the second member 20 is slid toward the first member 10, the minimum inspection space R is defined according to the dimensions of the inspection object X.

[0023] When the object X under inspection is in contact with the first end 11, the second end 12, the third end 21, and the fourth end 22, the ratio of the minor axis to the major axis of the object X (minor axis / major axis) is a predetermined ratio. When the object X under inspection is in contact with the first end 11 and the third end 21, but not with the second end 12 or the fourth end 22, the ratio of the minor axis to the major axis of the object X (minor axis / major axis) is greater than the predetermined ratio. When the object X under inspection is in contact with the second end 12 and the fourth end 22, but not with the first end 11 or the third end 21, the ratio of the minor axis to the major axis of the object X (minor axis / major axis) is less than the predetermined ratio. If the object X under inspection is in contact with both the second end 12 and the fourth end 22, which are further apart, the ratio of the short axis to the long axis of the object X (short axis / long axis) is less than or equal to a predetermined ratio, meaning that the object X under inspection is deformed to be flatter than the standard.

[0024] In this way, the inspection device 1 makes it easy to determine whether the ratio of the short axis to the long axis of the object X placed in the inspection space R is below or above the standard. The inspection device 1 does not require measuring the dimensions of the object X. By rotating the object X in the inspection space R while bringing the second member 20 closer to the first member 10, it is possible to check whether it makes contact with both the second end 12 and the fourth end 22. In other words, by using the inspection device 1, the object X can be inspected easily and appropriately without relying on accurate measurements.

[0025] Furthermore, the second member 20 can be removed from the first member 10 by removing the pin 31 from the elongated hole 32. Therefore, even if the object to be inspected X is a ring-shaped wire, the object to be inspected X can be easily placed in the inspection space R.

[0026] The sliding direction of the second member 20 is parallel to the straight line L connecting the intersection of the first end 11 and the second end 12, and the intersection of the third end 21 and the fourth end 22. In other words, the sliding direction of the second member 20 is parallel to the diagonal of the predetermined space R. For example, if the shape of the inspection space R is rectangular, the ratio of the short width (distance between the first end 11 and the third end 21) to the long width (distance between the second end 12 and the fourth end 22) of the inspection space R can always be kept constant. Note that if the first end 11 and the second end 12 are not directly connected, the intersection point of their respective extensions is taken.

[0027] The distance between the first end 11 and the third end 21 is different from the distance between the second end 12 and the fourth end 22.

[0028] Furthermore, the cross-section of the first end 11 and the third end 21 will be explained using Figure 4. Figure 4 is a cross-sectional view taken along the line IV-IV shown in Figure 1. The first end 11 and the third end 21 have opposite single-edged shapes. As shown in Figure 4, the tip of the first end 11 and the tip of the third end 21 are positioned on a single plane parallel to the sliding direction, and the first member 10 and the second member 20 are positioned so as to be inverted vertically with respect to this plane. This shape allows the first end 11 and the third end 21 to accurately grip a specific cross-section of the object to be inspected X parallel to the sliding direction. In addition, the first member 10 and the second member 20 can overlap. Similarly, the second end 12 and the fourth end 22 may have opposite single-edged shapes.

[0029] [Embodiment 2] Other embodiments of this disclosure are described below. For the sake of clarity, components having the same function as those described in Embodiment 1 are denoted by the same reference numerals, and their descriptions are not repeated.

[0030] Figure 5 is a plan view of the inspection device 1A according to Embodiment 2. The inspection device 1A comprises a first member 10A, a second member 20A, and a sliding mechanism 30A. The first member 10A has a first end 11 and a second end 12. The second member 20A has a third end 21 and a fourth end 22.

[0031] The sliding mechanism 30A is located at one end of the first member 10A and the second member 20A. The sliding mechanism 30A includes a guide 33A and a movable part 34A. The first member 10A is fixed to the movable part 34A. The second member 20A is fixed to the guide 33A. The guide 33A extends along a straight line L, and the movable part 34A can slide along the guide 33A parallel to the straight line L.

[0032] When the second member 20A is in the first position, in a plan view, the first end 11 and the fourth end 22 intersect, and the second end 12 and the third end 21 intersect. The first position is a position where the second member 20A is closer to the first member 10A than the position shown in Figure 5. When the second member 20A is in the first position, the inspection space R becomes a hole surrounded by the first end 11, the second end 12, the third end 21, and the fourth end 22.

[0033] The second position is defined as the position where the second member 20A is separated from the first member 10A relative to the first position. When the second member 20A is in the second position, the second end 12 and the third end 21 do not intersect in a plan view. That is, when the second member 20A is in the second position, the second end 12 and the third end 21 are separated. The first end 11 and the fourth end 22 may or may not intersect. When the second member 20A is in the second position, the inspection space R is not a hole surrounded by the first member 10A and the second member 20A, but rather an open shape on one side of the inspection space R, where the first member 10A and the second member 20A are separated from each other. According to the above configuration, as shown in Figure 5, the first member 10A and the second member 20A are separated on the side of the inspection space R opposite to the sliding mechanism 30A. This allows the object to be inspected X to be placed in the inspection space R from the side while the first member 10A and the second member 20A remain connected to the sliding mechanism 30A. This enables the inspection of closed-shaped objects X, such as annular wires.

[0034] According to the inspection device 1A, the first member 10A and the second member 20A are fixed to the sliding mechanism 30A. Therefore, the first member 10A and the second member 20A do not unintentionally detach from each other, making them easy to handle.

[0035] [Embodiment 3] Figure 6 is a plan view showing an example of an inspection device 1B according to Embodiment 3. In Embodiment 3, markers indicating the first end, second end, third end, or fourth end are attached to the first member or the second member. Unlike inspection device 1, inspection device 1B includes a first member 10B and a second member 20B instead of the first member 10 and the second member 20. The first member 10B includes a second end 12B instead of the second end 12, and the second member 20B includes a fourth end 22B instead of the fourth end 22.

[0036] Markers are provided on the second end 12B and the fourth end 22B with paint or ink. With this configuration, for example, if the second end 12B or the fourth end 22B indicated by the marker does not touch the long axis side of the outer circumference of the object to be inspected X, it can be determined that the ratio of the short axis to the long axis of the object to be inspected X is greater than a predetermined ratio. However, if both the second end 12B and the fourth end 22B indicated by the marker touch the long axis side of the outer circumference of the object to be inspected X, it can be determined that the ratio of the short axis to the long axis of the object to be inspected X is the same as or less than a predetermined ratio. In this way, with the above configuration, the inspection device 1B uses markers to indicate the end to which the object to be inspected X should be judged as defective if it comes into contact with it. Therefore, the operator can easily recognize which end of the object to be inspected X should be judged as defective if it comes into contact with it. Thus, the efficiency of the inspection work can be improved.

[0037] Furthermore, markers may be attached to the first end 11 and the third end 13, which should be judged as good products when they come into contact. The markers should be used to easily distinguish between the end located in the short axis direction and the end located in the long axis direction. Markers may be attached to only one of the opposing first end 11 and the third end 13. Markers may be attached to only one of the opposing second end 12B and the fourth end 22B. For example, the marker may be a mark indicating the first end 11, placed at a position away from the first end 11.

[0038] 〔summary〕 Embodiment 1 of the inspection apparatus of the present disclosure comprises a first member having a first end and a second end, a second member having a third end parallel to and opposite to the first end, and a fourth end parallel to and opposite to the second end, and a sliding mechanism for sliding the second member relative to the first member, wherein the first end, second end, third end, and fourth end constitute an inspection space through which an object to be inspected can pass, and the second member slides while maintaining a predetermined ratio between the distance between the first end and the third end and the distance between the second end and the fourth end.

[0039] Embodiment 2 of the inspection apparatus of the present disclosure is such that, in Embodiment 1, the sliding direction of the second member is parallel to the straight line connecting the intersection of the first end and the second end and the intersection of the third end and the fourth end.

[0040] Embodiment 3 of the inspection apparatus of the present disclosure is characterized in that, in Embodiment 1 or 2, the distance between the first end and the third end and the distance between the second end and the fourth end are different from each other.

[0041] Embodiment 4 of the inspection apparatus of the present disclosure is, in any one of embodiments 1 to 3, when the second member is in the first position, the inspection space is a hole enclosed by the first end, the second end, the third end, and the fourth end.

[0042] Embodiment 5 of the inspection apparatus of the present disclosure is such that, in any one of embodiments 1 to 4, when the second member is in the second position, the inspection space is not a hole surrounded by the first member and the second member, and on one side of the inspection space, the first member and the second member are separated from each other.

[0043] Embodiment 6 of the inspection apparatus of this disclosure is one of embodiments 1 to 5 in which the first end and the third end have a single-edged shape facing in opposite directions.

[0044] Embodiment 7 of the inspection apparatus of the present disclosure is one of embodiments 1 to 6, wherein the first member and the second member are plate-shaped members, and the first member and the second member partially overlap each other.

[0045] Embodiment 8 of the inspection apparatus of the present disclosure is one in which a marker indicating the first end, second end, third end, or fourth end is attached to the first member or the second member in any one of embodiments 1 to 7.

[0046] This disclosure is not limited to the embodiments described above, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. [Explanation of Symbols]

[0047] 1, 1A, 1B Inspection device 10, 10B First member 11 1st end 12, 12B 2nd end 20, 20B Second member 21 3rd end 22, 22B 4th end 30, 30A slide mechanism R testing space X Items to be inspected

Claims

1. A first member having a first end and a second end, A second member having a third end parallel to and facing the first end, and a fourth end parallel to and facing the second end, The device comprises a sliding mechanism for sliding the second member relative to the first member, The first end, the second end, the third end, and the fourth end constitute an inspection space through which the object to be inspected can pass. An inspection device in which the second member slides while maintaining a predetermined ratio between the distance between the first end and the third end and the distance between the second end and the fourth end.

2. The inspection apparatus according to claim 1, wherein the sliding direction of the second member is parallel to the straight line connecting the intersection of the first end and the second end and the intersection of the third end and the fourth end.

3. The inspection apparatus according to claim 1, wherein the distance between the first end and the third end and the distance between the second end and the fourth end are different from each other.

4. The inspection apparatus according to claim 1, wherein when the second member is in the first position, the inspection space is a hole enclosed by the first end, the second end, the third end, and the fourth end.

5. The inspection apparatus according to any one of claims 1 to 4, wherein when the second member is in the second position, the inspection space is not a hole surrounded by the first member and the second member, and on one side of the inspection space, the first member and the second member are separated from each other.

6. The inspection device according to any one of claims 1 to 4, wherein the first end and the third end have opposite single-edged shapes.

7. The first member and the second member are plate-shaped members, The inspection apparatus according to claim 6, wherein the first member and the second member partially overlap each other.

8. The inspection apparatus according to any one of claims 1 to 4, wherein a marker indicating the first end, second end, third end, or fourth end is attached to the first member or the second member.

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