JP2013148541A - Attaching structure of wire rope flaw detector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an attaching structure of a wire rope flaw detector capable of easily attaching and detaching a first rod body to/from a connection holder when attaching and detaching the wire rope flaw detector to a wire rope.SOLUTION: A connection holder 13 attached to a round bar 10 supported by a frame body 9 and a coupling rod 17 inserted into the connection holder 13 are provided, a wire rope flaw detector 8 for inspecting a damaged part of a wire rope of an elevator is attached to a tip part of the coupling rod 17, a notch part 19 which is partially opened and through which the round bar 10 is insertable and extractable from the opening is formed and attached movably to the connection holder 13, and a locking bar 12 for closing the opening of the notch part 19 so as to lock the round bar 10 in the notch part 19 with the round bar 10 inserted through the notch part 19 and opening the opening of the notch part 19 so as to extract the round bar 10 from the notch part 19 by moving from the state is provided.

Description

  The present invention relates to a mounting structure for a wire rope flaw detector utilized for inspection of a damaged portion of a wire rope such as an elevator formed by twisting a plurality of steel wires.

  In general, a wire rope has a structure in which a plurality of strands made of steel wires are twisted together. When this wire rope is used for a long period of time, for example, by connecting it to an elevator car and a counterweight, the strands are subjected to repeated loads of bending and pulling at the sheave or pulley wrapping part, and wear and break. is there. The wire rope replacement standards for wire ropes are determined by JIS based on the number of broken wires. A wire rope flaw detector using the leakage magnetic flux method is used as a method for inspecting the damaged state of these wires. Has been. The leakage magnetic flux method is a method in which a wire rope is magnetized in the longitudinal direction, and a broken wire portion, that is, a magnetic flux leaking from a damaged portion is detected by a sensor to inspect whether or not the wire is broken. The wire rope flaw detector includes magnetizing means and a magnetic sensor for detecting leakage magnetic flux.

  A machine using a wire rope generally has a structure connected to the end of the wire rope. For example, in an elevator, a car and a counterweight are connected to the end of the rope. Or it connects to the socket which fixes a rope end and a building. Moreover, in the wire rope flaw detector using the leakage magnetic flux method, it is necessary to arrange a magnetic sensor for detecting the leakage magnetic flux from the damaged portion in the vicinity of the surface of the wire rope. There exists a thing shown by patent document 1 as an attachment structure of such a wire rope flaw detector. This prior art includes a pair of brackets fixed to a machine base, a round bar supported by these brackets, that is, a first bar, a pivotable relative to the first bar, and the first bar. A support that is attached to the first rod so as to be movable in the axial direction of the body, that is, a connecting jig, and a round bar that is inserted through the connecting jig and extends along the extending direction of the wire rope, that is, the second There is disclosed a structure including a rod body and a wire rope flaw detector attached to the second rod body. By attaching the wire rope flaw detector to the wire rope in this way, the wire rope flaw detector can follow the behavior of the moving wire rope, and the wire rope flaw is inspected with high accuracy. Can be made.

JP 2009-258001 A

  However, in the prior art disclosed in Patent Document 1 described above, when the wire rope flaw detector is attached to or detached from the wire rope, the round bar is extracted from the support, that is, the first bar is extracted from the connecting jig, or the connecting jig is used as the first one. A complicated work of inserting one rod is required. As a result, there has been a problem that the efficiency of the attaching / detaching operation of the wire rope flaw detector to the wire rope cannot be expected.

  The present invention has been made from the actual state of the above-described prior art, and an object of the present invention is to provide a wire rope that can easily attach and remove the first rod body to and from the connecting jig when the wire rope flaw detector is attached to and detached from the wire rope. An object is to provide a mounting structure for a flaw detection apparatus.

  In order to achieve the above object, a wire rope flaw detector mounting structure according to the present invention includes a first rod body, a rotatable structure relative to the first rod body, and an axial direction of the first rod body. A connecting jig that is movably attached to the first bar, and a second bar that is inserted through the connecting jig and extends along the extending direction of the wire rope. In a wire rope flaw detector mounting structure in which a wire rope flaw detector is attached to inspect a damaged portion of the wire rope, a part of the connecting jig is opened, and the first rod body is inserted through the opening. And a notch that can be detached, is movably mounted on the connecting jig, and the first rod is inserted into the notch, and the first rod is cut off. In front of the notch so as to be locked in the notch In addition to closing the opening, it is provided with a locking member that opens the opening of the notch so that the first rod body can be taken out from the notch by moving from the state. .

  In the present invention configured as described above, when the wire rope flaw detector is arranged opposite to the wire rope, the second rod body to which the wire rope flaw detector arranged opposite to the wire rope is attached is used as a connecting jig. Insert the first rod body that is held in a predetermined part into the notch part relative to the notch part with the opening of the notch part of the connecting jig open, and attach it to the notch part. The opening of the notch is closed by moving the locking member. Thereby, a 1st rod can be latched in the notch part of a connection jig. That is, it is possible to keep the wire rope flaw detector stably in a state where the wire rope flaw detector is disposed opposite to the wire rope. In such a state, the damaged portion of the wire rope can be inspected by the wire rope flaw detector by moving the wire rope.

  Further, when the wire rope flaw detector is detached from the wire rope, the second rod body to which the wire rope flaw detector is attached is inserted into the connecting jig and is attached to the connecting jig. The locking member is moved to open the opening of the notch, and the first rod fixed to the predetermined part is relatively separated from the opening of the notch. Accordingly, the assembly including the wire rope flaw detector, the second rod body, and the connecting jig can be easily detached from the first rod body. That is, the present invention provides a wire rope flaw detector for a wire rope by a notch formed in the connecting jig and a locking member that is attached to the connecting jig and can close or open the opening of the notch. When attaching and detaching, the first rod can be easily attached to and detached from the connecting jig.

  Further, the present invention is characterized in that in the above invention, the locking member is provided with an elastic body that urges the locking member in a direction to close the opening of the notch. In the present invention configured as described above, the locking member is moved against the elastic force of the elastic body to open the opening of the notch portion of the connecting jig, and is held at a predetermined portion, for example. The first rod can be inserted and removed relative to the notch of the connecting jig. Further, in a state where the first rod is inserted into the cutout portion of the connecting jig, the locking member is urged by the elastic force of the elastic body to close the cutout portion, for example, a wire rope by a wire rope flaw detector. During the inspection of the damaged part, the first rod can be securely attached to the connecting jig so as not to be detached from the notch.

  Further, the present invention is the above invention, comprising a U-shaped frame body that supports each of both end portions of the first rod body, and the frame body before the first rod body is supported by the frame body It is characterized by comprising a shape that is gradually opened toward the opening. In the present invention configured as described above, when the first rod body is supported by the frame body, the frame body can be attached while being bent inward. When the first rod body is supported by the frame body in this way, the frame body is maintained in a state of having an expansion force (elastic force) that expands outward. Therefore, when the damaged portion of the wire rope is inspected by the wire rope flaw detector, the frame body is interposed via the wire rope flaw detector, the second rod, the connecting jig, and the first rod, which are forces often generated during the inspection. When a force to bend inwardly acts, the above-described spreading force becomes a resistance force, and the force to bend the frame inwardly is reduced. As a result, deformation and breakage of the frame can be prevented.

  Moreover, this invention provided the stopper provided in the said 2nd rod body in the said invention, and preventing the detachment | leave of the said connection jig from the said 2nd rod body. In the present invention configured as described above, when the damaged portion of the wire rope is inspected by the wire rope flaw detector, the second rod body is moved with respect to the connecting jig via the wire rope flaw detector. Even when force is applied, the movement of the second rod body is restricted by the stopper. Therefore, during the inspection of the damaged portion of the wire rope by the wire rope flaw detector, the second rod body to which the wire rope flaw detector is attached can be stably maintained so as not to be detached from the connecting jig.

  The present invention provides a notch provided in a connecting jig into which a second rod body to which a wire rope flaw detector is attached is inserted, and is attached to the connecting jig and can close or open the opening of the notch. With the locking member, when the wire rope flaw detector is attached to or detached from the wire rope, the first rod can be easily attached to and detached from the connecting jig. Thereby, the attaching / detaching operation of the wire rope flaw detector with respect to the wire rope can be performed more efficiently than before.

1 is a perspective view showing a schematic configuration of an elevator in which an embodiment of a wire rope flaw detector mounting structure according to the present invention is installed. It is a perspective view which shows the main structures of the attachment structure of the wire rope flaw detector which concerns on this embodiment installed in the elevator shown in FIG. It is a side view which shows the detailed structure of this embodiment shown in FIG. It is a figure which shows each the example of a different installation at the time of installing this embodiment in an elevator, (a) A figure is a side view, (b) A figure is a perspective view. It is a front view which shows the frame provided in this embodiment.

  Embodiments of a wire rope flaw detector mounting structure according to the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view showing a schematic configuration of an elevator in which an embodiment of a wire rope flaw detector mounting structure according to the present invention is installed.

  The elevator shown in FIG. 1 is, for example, a machine room-less elevator, and a hoisting machine 2 is disposed at the bottom of a hoistway. The car 1 and the counterweight 3 are respectively provided with pulleys 4a, 4b, and 5 that form a moving pulley. When the moving amount of the car 1 is 1, the sheave 6 of the hoist 2 is The wire rope 7 has a winding amount of 2.

  A pair of left and right guide rails having a T-shaped cross section (not shown) are arranged in the vertical direction in the elevator hoistway, and the car 1 moves up and down along these guide rails. A plurality of wire ropes 7 wound around the sheave 6 are wound around the pulleys 4a and 4b of the car 1 and the pulley 5 of the counterweight 3, and are respectively connected to the top base (not shown) coupled to the guide rails. Fixed.

  Normally, the wire rope 7 is damaged most at the passage portion of the sheave 6 that transmits the driving force by traction. Therefore, if a wire rope flaw detector is installed immediately above the sheave 6 and the car 1 is operated from the top floor to the bottom floor, most of the damage of the passage portion of the sheave 6 of the wire rope 7 is inspected. can do. For this reason, in the present embodiment, the wire rope flaw detector 8 to be attached is disposed, for example, in the vicinity of the sheave 6.

  2 is a perspective view showing the main configuration of the wire rope flaw detector according to the present embodiment installed in the elevator shown in FIG. 1, and FIG. 3 is a side view showing the detailed configuration of the present embodiment shown in FIG. is there.

  Only one wire rope flaw detector 8 is provided, and this one wire rope flaw detector 8 is arranged so as to face each of the wire ropes 7 (a), 7 (b) and 7 (c) sequentially. . Although not shown, the wire rope flaw detector 8 includes a magnetizing means (not shown) that magnetizes each of the wire ropes 7 (a), 7 (b), and 7 (c) in the longitudinal direction, and a wire magnetized by the magnetizing means. Magnetic flux detecting means for detecting the leakage magnetic flux from the damaged portion of each of the ropes 7 (a), 7 (b) and 7 (c).

  The attachment structure of the wire rope flaw detector according to the present embodiment includes, for example, a U-shaped frame 9 shown in FIG. 2 that is fixed at a predetermined position, and a first rod that is held by the frame 9, such as a round bar. 10, a connecting jig 13 attached to the round bar 10 so as to be rotatable with respect to the round bar 10 and movable in the axial direction of the round bar 10, and a wire rope inserted through the connecting jig 13. 7 (a), 7 (b), and 7 (c) are provided with the 2nd rod body extended along each extension direction, for example, connecting rod 17.

  A support member 20 is formed integrally with the wire rope flaw detector 8, and a distal end portion of the connecting rod 17 is connected to a joint 21 attached to the support member 20. That is, the wire rope flaw detector 8 is rotatably attached to the distal end portion of the connecting rod 17.

  As shown in FIG. 3, the connecting jig 13 into which the connecting rod 17 is inserted is inserted into the connecting jig 13 by screwing into the screw hole 18 formed at a position suitable for the connecting rod 17 and the screw hole 18. And a fixing screw 11 capable of fixing the connecting rod 17.

  In the present embodiment, a notch 19 is formed in the connecting jig 13 so that a part thereof is opened and the round bar 10 can be inserted and removed from the opening. Further, in the present embodiment, the circular jig 10 is movably mounted on the connecting jig 13 and the round bar 10 is inserted into the notch 19, and the round bar 10 is cut so as to be locked in the notch 19. A locking member, for example, a locking rod 12 that closes the opening of the notch 19 and opens the opening of the notch 19 so that the round bar 10 can be removed from the notch 19 by moving from the state. I have.

  In addition, the present embodiment includes an elastic body, for example, a spring 14 that urges the locking rod 12 in a direction to close the opening of the notch 19. An L-shaped bracket 15 having an insertion hole into which the locking rod 12 can be inserted is fixed to the side surface of the connecting jig 13, and a spring seat 16 attached to the locking rod 12 and an insertion hole for the bracket 15 are formed. The spring 14 is attached to the locking rod 12 so that the spring 14 is disposed between the portions.

  The aforementioned frame body 9 that supports the round bar 10 that is relatively inserted into the notch 19 of the connecting jig 13 is, for example, a steel member. As shown in the left side of FIG. Before 10 is supported by the frame body 9, it has a shape that is gradually opened toward the opening, that is, upward in the figure. As shown in the figure on the left side of FIG. 5, the round bar 10 is inserted into the frame body 9, and the round bar 10 is prevented from coming off while the frame body 9 is bent inward as shown by the arrow in the figure. The members 51 (a) and 51 (b) are attached to the round bar 10. As a result, as shown in the drawing on the right side of FIG. 5, the frame body 9 forms a U-shape that is arranged so that both side portions extend in a substantially vertical direction.

  Further, as shown in FIG. 3, the present embodiment includes a stopper 22 that is disposed, for example, near the end of the connecting rod 17 and prevents the connecting jig 13 from being detached from the connecting rod 17.

  When the wire rope flaw detector 8 is disposed opposite to each of the wire ropes 7 (a), 7 (b), and 7 (c) in this embodiment configured as described above, for example, FIG. As shown in FIG. 5A, the frame body 9 that supports the round bar 10 is fixed to the upper portion of the hoisting machine 2 via the magnet base 31 so that the open portion is positioned upward. As shown in FIG. 4B, a frame for supporting the round bar 10 on the extension plate 32 by fixing the extension plate 32 to the L-shaped steel, which is an existing member of the elevator, by the gripping tool 33. The body 9 may be arranged.

  Here, the connecting rod 17 to which the wire rope flaw detector 8 disposed opposite to one of the wire ropes 7 (a), 7 (b), and 7 (c) is attached is inserted into the connecting jig 13 to be connected. The opening of the notch 19 of the tool 13 is in a state of being opened by pulling the locking rod 12 attached to the connecting jig 13 downward in FIG. 3 against the force of the spring 14. In this state, for example, as shown in FIG. 4A, the round bar 10 held by the frame body 9 fixed on the hoisting machine 2 via the magnet base 31 is cut from the opening. By relatively inserting into the notch 19 and weakening the pulling force applied to the locking bar 12, the locking bar 12 is moved by the force of the spring 14, and the opening of the notch 19 is closed. Is done.

  Thereby, the round bar 10 can be locked in the notch 19 of the connecting jig 13. That is, the wire rope flaw detector 8 can be stably maintained in a state where it is disposed opposite to one of the wire ropes 7 (a), 7 (b), and 7 (c). In such a state, by moving the wire ropes 7 (a), 7 (b), and 7 (c), the wire rope flaw detector 8 can inspect the damaged portion of the corresponding wire rope.

  In addition, for example, the inspection of each damaged portion of the wire ropes 7 (a), 7 (b), and 7 (c) by the wire rope flaw detector 8 is finished, and the wire ropes 7 (a), 7 (b), and 7 ( c) When detaching the wire rope flaw detector 8 from c), the connecting rod 17 to which the wire rope flaw detector 8 is attached is inserted into the connecting jig 13 and attached to the connecting jig 13. By pulling the locking bar 12 in the downward direction in FIG. 3, the opening of the notch 19 can be opened, and the round bar 10 can be relatively detached from the opening of the notch 19. As a result, the assembly including the wire rope flaw detector 8, the connecting rod 17, and the connecting jig 13 can be easily detached from the round bar 10.

  That is, in the present embodiment, a wire rope is formed by a notch 19 formed in the connecting jig 13 and a locking rod 12 that is attached to the connecting jig 13 and can close or open the opening of the notch 19. When the wire rope flaw detector 8 is attached to and detached from 7 (a), 7 (b), and 7 (c), the round bar 10 can be easily attached to and removed from the connecting jig 13. Thereby, this embodiment can perform the attachment or detachment operation | work of the wire rope flaw detector 8 with respect to the wire rope 7 (a), 7 (b), 7 (c) efficiently.

  Further, in this embodiment, since the locking bar 12 includes a spring 14 that biases the opening of the notch 19 of the connecting jig 13 in the closing direction, the round bar 10 is connected to the connecting jig 13. In the state of being inserted into the notch 19, the locking rod 12 is urged by the spring force of the spring 14 to close the notch 19, and the wire ropes 7 (a), 7 ( During the inspection of each damaged part b) and 7 (c), the round bar 10 can be securely attached to the connecting jig 13 so as not to be detached from the notch part 19.

  Further, in the present embodiment, as described above, the U-shaped frame body 9 that supports each of the both end portions of the round bar 10 is an open portion before the round bar 10 is supported by the frame body 9. It has a shape that gradually opens as it goes. When the round bar 10 is supported by the frame body 9, the frame body 9 can be attached while being bent inward. When the round bar 10 is supported on the frame body 9 in this way, the frame body 9 is maintained in a state of having an expanding force (elastic force) that expands outward. Therefore, when inspecting each damaged portion of the wire ropes 7 (a), 7 (b), and 7 (c) by the wire rope flaw detector 8, the wire rope flaw detector 8 and the connecting rod, which are forces often generated during the inspection. 17, when the force to bend the frame body 9 inward is exerted via the connecting jig 13 and the round bar 10, the above-mentioned expanding force becomes a resistance force, and the frame body 9 is bent inward. The power to try is reduced. Thereby, deformation and damage of the frame body 9 can be prevented.

  In the present invention, the stopper 22 for preventing the connecting jig 13 from being detached from the connecting rod 17 is provided in the vicinity of the end of the connecting rod 17, so that the wire ropes 7 (a), 7 by the wire rope flaw detector 8 are provided. When inspecting each damaged portion of (b) and (c), when a force for moving the connecting rod 17 relative to the connecting jig 13 is applied to the connecting rod 17 via the wire rope flaw detector 8. However, the movement of the connecting jig 13 is restricted by the stopper 22. Therefore, during the inspection of each damaged portion of the wire ropes 7 (a), 7 (b) and 7 (c) by the wire rope flaw detector 8, the connecting rod 17 to which the wire rope flaw detector 8 is attached is connected to the connecting jig. 13 can be kept stable so as not to leave.

  In the above-described embodiment, one wire rope flaw detector 8 is arranged for each of the wire ropes 7 (a), 7 (b), and 7 (c), and the wire ropes 7 (a) and 7 (b ), 7 (c), the wire rope flaw detector 8 is placed opposite to one wire rope to inspect the damaged portion of the corresponding wire rope, and then the wire rope flaw detector 8 is attached to the other wire rope. Although it arrange | positions facing and inspects the damage part of the other applicable wire rope, in this invention, multiple wire ropes 7 (a), 7 (b), 7 (c) are in this way. It is not restricted to the structure provided with only one wire rope flaw detector 8 for each. For example, a plurality of connecting jigs 13 are provided on the round bar 10 supported by the frame body 9 so as to be rotatable and movable in the axial direction of the round bar 10. A plurality of wire ropes 7 (a), 7 (b), 7 (c) are obtained by individually attaching the device 8 and appropriately adjusting the fixing position of each connecting rod 17 with respect to the connecting jig 13 via the fixing screw 11. ), A plurality of wire rope flaw detectors 8 are arranged to face each other.

  Further, for example, a plurality of connecting bars 13 each having a notch portion 19 into which a plurality of round bars 9 are supported by the frame body 9 and into which the respective round bars 9 can be relatively inserted are provided. A plurality of connecting rods 17 corresponding to each of the jigs 13 are inserted, and a plurality of wire ropes 7 (a), 7 (b), and 7 (c) are arranged to be opposed to the tip portions of the connecting rods 17 respectively. It can be set as the 2nd structure which attaches the wire rope flaw detector 8 of this. Furthermore, it can be set as the structure which combined the 1st structure mentioned above and the 2nd structure.

  As described above, in the case of the apparatus provided with the plurality of wire rope flaw detectors 8, the damaged portions of the plurality of wire ropes 7 (a), 7 (b), and 7 (c) are simultaneously inspected. This makes it possible to efficiently inspect the damaged portions of the wire ropes 7 (a), 7 (b), and 7 (c).

DESCRIPTION OF SYMBOLS 1 Car 2 Hoisting machine 3 Balance weight 6 Sheaves 7, 7 (a), 7 (b), 7 (c) Wire rope 8 Wire rope flaw detector 9 Frame 10 Round bar (1st bar)
11 Fixing screw 12 Locking rod (locking member)
13 Connecting jig 14 Spring (elastic body)
15 Bracket 16 Spring seat 17 Connecting rod (second rod)
18 Screw hole 19 Notch 20 Support member 21 Joint 22 Stopper 31 Magnet base 32 Extension plate 33 Gripping tool

Claims (4)

A first rod, a connecting jig attached to the first rod so as to be rotatable with respect to the first rod, and movable in the axial direction of the first rod; A wire rope flaw detector, comprising: a second rod inserted through the wire rope extending in the extending direction; and a wire rope flaw detector for inspecting the damaged portion of the wire rope is attached to the second rod. In the mounting structure of
A part of the connecting jig is opened, and a cutout portion is formed through which the first rod can be inserted and removed from the opening,
The notch portion is movably attached to the connecting jig, and the first rod body is inserted into the notch portion, so that the first rod body is locked in the notch portion. And a locking member that opens the opening of the notch so that the first rod body can be taken out from the notch by moving from that state. The mounting structure of the wire rope flaw detector. In the attachment structure of the wire rope flaw detector according to claim 1,
An attachment structure for a wire rope flaw detector, comprising: an elastic body that urges the locking member in a direction to close the opening of the notch. In the attachment structure of the wire rope flaw detector according to claim 1 or 2,
A U-shaped frame that supports each of both ends of the first rod,
The wire rope flaw detector mounting structure according to claim 1, wherein the frame body before the first rod body is supported by the frame body has a shape that is gradually opened toward the opening. In the attachment structure of the wire rope flaw detector according to any one of claims 1 to 3,
An attachment structure for a wire rope flaw detector, comprising a stopper provided on the second rod body for preventing the connection jig from being detached from the second rod body.

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