JP2014059289A - Elevator rope diameter inspection jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator rope diameter inspection jig capable of detecting shape collapse in both width direction and depth direction of the elevator rope.SOLUTION: An elevator rope diameter inspection jig 7 detects shape collapse of each of a plurality of ropes 3 next to each other in the width direction. The elevator rope diameter inspection jig 7 comprises: a grip part 71 held by a maintenance inspector; and a pair of contact parts 72 having a prescribed gap therebetween so as to hold the rope 3 therein and fixed to the grip part 71. The grip part 71 is formed to extend from the rope 3 held by the pair of contact parts 72 on one side in the depth direction of the rope 3 than an adjacent rope 32 when the pair of contact parts 72 holds the rope 3 in the width direction, and extend from the rope 3 held by the pair of contact parts 72 on one side in the depth direction than the adjacent rope 32 when the pair of contact parts 72 holds the rope 3 in the depth direction.

Description

  The present invention relates to an elevator rope diameter inspection jig for detecting an elevator rope shape change.

  2. Description of the Related Art Conventionally, an elevator rope diameter inspection jig is known which is composed of a rod-shaped rope gauge body, and has a notch extending in the longitudinal direction at one end in the longitudinal direction of the rope gauge body. The width dimension of the notch is a dimension that matches the nominal diameter of the elevator rope. The maintenance worker checks the elevator rope by inserting the elevator rope into the notch and then moving the rope gauge body along the elevator rope. When a deformation that causes a protrusion protruding radially in part of the elevator rope occurs, the rope gauge body is caught by the protrusion of the elevator rope, so that the deformation of the elevator rope is detected (for example, , See Patent Document 1).

JP 2004-333474 A

  However, when inspecting an elevator rope arranged at an intermediate portion among a plurality of elevator ropes arranged at equal intervals in the width direction of the elevator rope, for example, at intervals of about 6 mm, the width direction of the elevator rope Although the shape of the rope cage can be detected, the adjacent elevator rope adjacent to the elevator rope to be inspected prevents the longitudinal direction of the rope cage body from being aligned with the direction in which the elevator ropes are arranged. The elevator rope cannot be inserted into the notch so that the deformation in the direction can be detected. Thereby, there existed a problem that the shape deformation about the depth direction of an elevator rope cannot be detected.

  The present invention provides an elevator rope diameter inspection jig capable of detecting deformation in both the width direction and the depth direction of an elevator rope.

  An elevator rope diameter inspection jig according to the present invention is an elevator rope diameter inspection jig that detects deformation of each of a plurality of elevator ropes arranged in the width direction, and is a gripping part that is gripped by a maintenance inspection worker And a pair of contact portions that are provided at a predetermined interval so as to be sandwiched between the elevator ropes and are fixed to the gripping portion. The gripping portion sandwiches the elevator rope in the width direction. The elevator rope sandwiched between the pair of contact portions extends from the elevator rope adjacent to the elevator rope sandwiched between the pair of contact portions to one side in the depth direction of the elevator rope. When the contact part sandwiches the elevator rope in the depth direction, the elevator rope from the elevator rope sandwiched between the pair of contact parts is deeper than the adjacent elevator rope. On the other hand and is formed so as to extend to the side on.

  According to the elevator rope diameter inspection jig according to the present invention, the gripping portion gripped by the maintenance / inspection worker and the elevator rope are provided at a predetermined interval so as to be sandwiched therebetween, and are fixed to the gripping portion. A pair of contact portions, and when the pair of contact portions sandwich the elevator rope in the width direction, the grip portion changes from an elevator rope sandwiched between the pair of contact portions to an elevator rope sandwiched between the pair of contact portions. When the pair of contact portions sandwich the elevator rope in the depth direction than the adjacent elevator rope that is adjacent to the adjacent elevator rope, the pair of contact portions are separated from the elevator rope sandwiched between the pair of contact portions. It extends to one side in the depth direction than the adjacent elevator rope that is adjacent to the elevator rope sandwiched between Because it is formed, it can be sandwiched for both the pair of contact portions of the elevator ropes in the width direction and the depth direction without being obstructed by the adjacent elevator ropes. As a result, the elevator rope diameter inspection jig can detect the deformation in both the width direction and the depth direction of the elevator rope.

It is a side view which shows the elevator which concerns on Embodiment 1 of this invention. It is a top view which shows the elevator rope diameter inspection jig which detects the diameter reduction of the rope of FIG. It is a top view which shows a mode that the diameter reduction about the width direction of a rope is checked using the elevator rope diameter check jig | tool of FIG. It is a top view which shows a mode that the diameter reduction about the depth direction of a rope is inspected using the elevator rope diameter inspection jig of FIG. It is a side view which shows the elevator rope diameter check jig | tool of FIG. It is a top view which shows the rope of FIG.

Embodiment 1 FIG.
1 is a side view showing an elevator according to Embodiment 1 of the present invention. In the figure, the elevator is a machine room-less elevator, and a car 1 that moves up and down the hoistway 100, a counterweight 2 that moves up and down the hoistway 100 together with the car 1, and both ends connected to the upper wall 200 of the hoistway 100. A rope 3 (elevator rope) 3 and a portion of the rope 3 between the car 1 and the counterweight 2 are wound around, and the hoisting machine 4 that moves the rope 3 by driving, the car 1 and the hoisting A car-side return wheel 5 around which the rope 3 between the machine 4 is wound and a counterweight-side return wheel around which the rope 3 between the counterweight 2 and the hoisting machine 4 is wound. 6 is provided. The hoisting machine 4 is attached to the floor 300 of the hoistway 100. The car-side return wheel 5 and the counterweight-side return wheel 6 are attached to the upper wall 200.

  The car 1 has a car body 11 and a pair of car suspension wheels 12 provided at the lower end of the car body 11. A rope 3 is wound around each car suspension wheel 12.

  The counterweight 2 includes a counterweight main body 21 and a counterweight suspension wheel 22 provided at the upper end portion of the counterweight main body 21. A rope 3 is wound around the counterweight suspension wheel 22.

  The rope 3 is wound around a car suspension wheel 12, a car side return wheel 5, a hoisting machine 4, a counterweight side return wheel 6, and a counterweight suspension wheel 22. When the hoist 4 moves the rope 3, the car 1 and the counterweight 2 are raised and lowered in opposite directions. In this example, three ropes 3 are arranged in the width direction and are wound around a car suspension wheel 12, a car side return wheel 5, a hoisting machine 4, a counterweight side return wheel 6, and a counterweight suspension wheel 22. It has been.

  The rope 3 is bent at each of the car suspension wheel 12, the car side return wheel 5, the hoisting machine 4, the counterweight side return wheel 6, and the counterweight suspension wheel 22 when moving. The rope 3 is deteriorated every time the rope 3 is bent. When the rope 3 is further deteriorated, the strands constituting the rope 3 and the strands constituting the transformer are broken. When breakage occurs in the strands or strands, diameter reduction (deformation) in which the diameter of the rope 3 decreases occurs. In particular, the rope car suspension part 31 which is a portion of the rope 3 located between the pair of car suspension cars 12 when the car 1 stops on the reference floor is inspected regularly because the deterioration progresses quickly. .

  FIG. 2 is a plan view showing an elevator rope diameter inspection jig 7 for detecting the diameter reduction of the rope 3 of FIG. In the drawing, the elevator rope diameter inspection jig 7 is provided at a predetermined interval A so that the rope 3 is sandwiched between a gripping portion 71 gripped by a maintenance / inspection operator, and is fixed to the gripping portion 71. A pair of contact portions 72, a pair of contact portions 73 that are fixed to the gripping portion 71 and provided with a predetermined interval B so that the rope 3 is sandwiched therebetween, and a fall prevention provided on the gripping portion 71 A wire (fall prevention tool) 74.

  The gripping portion 71 has a bending portion 711 that connects the pair of contact portions 72, a bending portion 712 that connects the pair of contact portions 73, and a gripping portion main body 713 connected to the bending portion 711 and the bending portion 712. ing.

  The predetermined distance A in the pair of contact portions 72 is a dimension corresponding to the diameter of the rope 3 having a nominal diameter of 12 mm, and coincides with the diameter of the rope 3 when the rope 3 is reduced in diameter by a predetermined amount. . In this example, the predetermined interval A between the pair of contact portions 72 is a value (11.64 mm) obtained by multiplying 12 mm by a diameter reduction rate of 97%. The rope 3 having a nominal diameter of 12 mm needs to be replaced with a new rope 3 when the diameter reaches 11.64 mm.

  The rope 3 having a diameter larger than the predetermined interval A in the pair of contact portions 72 cannot pass between the pair of contact portions 72, while the rope having a diameter equal to or smaller than the predetermined interval A in the pair of contact portions 72. 3 can pass between the pair of contact portions 72. That is, the diameter reduction of the rope 3 can be detected based on whether or not the rope 3 can pass between the pair of contact portions 72.

  The predetermined distance B in the pair of contact portions 73 is a dimension corresponding to the diameter of the rope 3 having a nominal diameter of 10 mm, and coincides with the diameter of the rope 3 when the rope 3 is reduced in diameter by a predetermined amount. . In this example, the predetermined interval B between the pair of contact portions 73 is a value (9.7 mm) obtained by multiplying 10 mm by a diameter reduction rate of 97%. The rope 3 having a nominal diameter of 10 mm needs to be replaced with a new rope 3 when the diameter becomes 9.7 mm.

  The rope 3 having a diameter larger than the predetermined interval B in the pair of contact portions 73 cannot pass between the pair of contact portions 73, while the rope having a diameter equal to or less than the predetermined interval B in the pair of contact portions 73. 3 can pass between the pair of contact portions 73. That is, the diameter reduction of the rope 3 can be detected based on whether the rope 3 can pass between the pair of contact portions 73.

  Each of the predetermined interval A and the predetermined interval B is different from each other corresponding to the two ropes 3 having different nominal diameters.

  The length of each contact portion 72 in the direction along the straight line connecting the pair of contact portions 72 is 5 mm, which is smaller than the dimension between the adjacent ropes 3. Thereby, the contact part 72 can be inserted between the adjacent ropes 3. The length of each contact portion 73 in the direction along the straight line connecting the pair of contact portions 73 is also 5 mm, which is smaller than the dimension between the adjacent ropes 3. Thereby, the contact part 73 can be inserted between the adjacent ropes 3.

  The curved portion 711 is formed to be curved so that the inner peripheral surface faces the center portion of the straight line connecting the pair of contact portions 72. The distance from the central portion of the straight line connecting the pair of contact portions 72 to the inner peripheral surface of the curved portion 711 is slightly larger than the distance from the central portion of the straight line connecting the pair of contact portions 72 to the contact portion 72. .

  The curved portion 712 is formed to be curved so that the inner peripheral surface faces the center portion of a straight line connecting the pair of contact portions 73. The distance from the central part of the straight line connecting the pair of contact parts 73 to the inner peripheral surface of the curved part 712 is slightly larger than the distance from the central part of the straight line connecting the pair of contact parts 73 to the contact part 73. .

  The grip portion main body 713 is formed in a plate shape extending in one direction. The outer peripheral surface of the bending portion 711 is connected to one end portion in the longitudinal direction of the grip portion main body 713. The outer peripheral surface of the bending portion 712 is connected to the other end portion in the longitudinal direction of the grip portion main body 713.

  A through hole 714 through which the fall prevention wire 74 passes is formed in the grip portion main body 713. The fall prevention wire 74 is connected to a maintenance inspection worker. This prevents the elevator rope diameter inspection jig 7 from falling on the floor 300 when the maintenance inspection operator accidentally drops the elevator rope diameter inspection jig 7 from his / her hand.

  In the portion on the curved portion 711 side of the grip portion main body 713, a message indicating that the pair of contact portions 72 is used for inspection of the rope 3 having a nominal diameter of 12 mm is displayed. In addition, the portion on the curved portion 712 side of the grip portion main body 713 displays that the pair of contact portions 73 is used for inspection of the rope 3 having a nominal diameter of 10 mm.

  3 is a plan view showing a state in which the diameter reduction in the width direction of the rope 3 is inspected using the elevator rope diameter inspection jig 7 of FIG. 2, and FIG. 4 is an example of using the elevator rope diameter inspection jig 7 of FIG. It is a top view which shows a mode that the diameter reduction about the depth direction of the rope 3 is inspected. Here, the relationship between the contact portion 72 and the grip portion 71 will be described, but the relationship between the contact portion 73 and the grip portion 71 is the same as the relationship between the contact portion 72 and the grip portion 71. The distance between the adjacent ropes 3 is 6 mm.

  When the pair of contact portions 72 sandwich the rope 3 in the width direction, the gripping portion 71 is in a direction C inclined with respect to a direction X in which the ropes 3 are arranged and a direction Y orthogonal to the longitudinal direction of the rope 3. It is formed to extend. The width direction of the rope 3 is the direction X in which the ropes 3 are arranged.

  Further, when the pair of contact portions 72 sandwich the rope 3 in the depth direction, the gripping portion 71 is inclined in a direction D inclined with respect to the direction X in which the ropes 3 are arranged and the direction Y orthogonal to the longitudinal direction of the ropes 3. It is formed to extend. The depth direction of the rope 3 is a direction Y orthogonal to the direction X in which the ropes 3 are arranged and the longitudinal direction of the ropes 3.

  That is, the gripping portion 71 is adjacent to the rope 3 sandwiched between the pair of contact portions 72 from the rope 3 sandwiched between the pair of contact portions 72 when the pair of contact portions 72 sandwich the rope 3 in the width direction. The rope 3 extends to one side in the depth direction of the rope 3 than the adjacent rope (adjacent elevator rope) 32, and the pair of contact portions 72 are sandwiched between the pair of contact portions 72 when the rope 3 is sandwiched in the depth direction. It is formed so as to extend from the rope 3 to one side in the depth direction from the adjacent rope 32. Thereby, a pair of contact part 72 can pinch | interpose the rope 3 about both the width direction and the depth direction, without being interrupted by the adjacent rope 32. FIG. Here, the one side in the depth direction of the rope 3 is the state in which the elevator rope diameter inspection jig 7 is arranged between the rope 3 and the maintenance inspection operator, and the maintenance inspection operator performs the elevator rope diameter inspection treatment. When the tool 7 is brought close to the rope 3 and the pair of contact portions 72 sandwich the rope 3 in the width direction, it is closer to the maintenance / inspection operator than the rope 3, that is, closer to the maintenance / inspection operator than the rope 3. .

  5 is a side view showing the elevator rope diameter checking jig 7 of FIG. 2, and FIG. 6 is a plan view showing the rope 3 of FIG. Each of the pair of contact portions 72 is formed to extend along the rope 3 when the pair of contact portions 72 sandwich the rope 3. Each of the pair of contact portions 73 is also formed to extend along the rope 3 when the pair of contact portions 73 sandwich the rope 3. The longitudinal dimension E of each of the pair of contact portions 72 and the longitudinal dimension E of each of the pair of contact portions 73 are distances connecting the peak portions 333 of the three strands 33 arranged in order in the longitudinal direction of the rope 3. The value is equal to F. In the case of the rope 3 composed of the eight strands 33, the length L of one pitch of the strands 33 is 6.5 times the diameter D in the width direction of the rope 3. The longitudinal dimension E and the longitudinal dimension E of the pair of contact portions 73 are 1.625 times the diameter D in the width direction of the rope 3. In the case of the rope 3 composed of six strands 33, the length L of one pitch of the strands 33 is six times the diameter D in the width direction of the rope 3, so the width direction of the rope 3 Is twice the diameter D of In this example, the longitudinal dimension E of the pair of contact portions 72 and the longitudinal dimension E of the pair of contact portions 73 are 12 mm. In addition, each dimension E of the longitudinal direction of the contact part 72 and the contact part 73 should just be more than the distance which connected the peak part 333 of the two strands 33 located in a line with the longitudinal direction of the rope 3. FIG.

  Next, a procedure for inspecting the rope 3 using the elevator rope diameter inspection jig 7 will be described. First, the maintenance / inspection operator connects the fall prevention wire 74 to the maintenance / inspection operator. Thereafter, the maintenance / inspection operator grips the grip portion main body 713, and the pair of contact portions 72 holds the rope 3 in a state where the elevator rope diameter inspection jig 7 is disposed between the rope 3 and the maintenance / inspection operator. The elevator rope diameter inspection jig 7 is brought close to the rope 3 so as to be sandwiched in the width direction. At this time, when the diameter in the width direction of the rope 3 is larger than the predetermined distance A between the pair of contact portions 72, the rope 3 cannot pass between the pair of contact portions 72. On the other hand, when the diameter in the width direction of the rope 3 is equal to or less than the predetermined distance A in the pair of contact portions 72, the rope 3 can pass between the pair of contact portions 72. Thereby, the maintenance / inspection worker can detect the diameter reduction in the width direction of the rope 3.

  Thereafter, the maintenance / inspection operator moves the elevator rope diameter inspection jig 7 so that the pair of contact portions 72 sandwich the rope 3 in the depth direction. At this time, when the diameter of the rope 3 in the depth direction is larger than the predetermined distance A between the pair of contact portions 72, the rope 3 cannot pass between the pair of contact portions 72. On the other hand, when the diameter of the rope 3 in the depth direction is equal to or less than the predetermined distance A in the pair of contact portions 72, the rope 3 can pass between the pair of contact portions 72. Thereby, the maintenance / inspection worker can detect the diameter reduction of the rope 3 in the depth direction.

  Thereafter, the maintenance work inspector performs an inspection on the portion of the rope 3 that is adjacent to the portion of the rope 3 that has already been inspected and that has not yet been inspected. When the inspection is carried out over the entire length of the rope 3, the inspection of the rope 3 is completed.

  As described above, according to the elevator rope diameter inspection jig 7 according to the first embodiment of the present invention, the gripping portion 71 gripped by the maintenance and inspection worker and the rope 3 are sandwiched between them. A pair of contact portions 72 provided at an interval A and fixed to the gripping portion 71. The gripping portion 71 is a pair of contact portions 72 when the pair of contact portions 72 sandwich the rope 3 in the width direction. The rope 3 sandwiched between the pair of contact portions 72 when the pair of contact portions 72 sandwich the rope 3 in the depth direction, extending from the rope 3 sandwiched between the adjacent ropes 32 to one side in the depth direction of the rope 3. Is formed so as to extend to one side in the depth direction from the adjacent rope 32, so that the pair of contact portions 72 can sandwich the rope 3 in both the width direction and the depth direction without being obstructed by the adjacent rope 32. . As a result, the elevator rope diameter inspection jig 7 can detect the deformation of the rope 3 in both the width direction and the depth direction.

  Each of the pair of contact portions 72 is formed so as to extend along the rope 3 when the pair of contact portions 72 sandwich the rope 3, and each dimension E in the longitudinal direction of the pair of contact portions 72. Is longer than the distance connecting the peak portions 333 of the two strands 33 aligned in the longitudinal direction of the rope 3, so that the accuracy of detecting the diameter reduction of the rope 3 by the elevator rope diameter inspection jig 7 can be improved. Can do.

  In addition, a pair of contact portions 72 and a pair of contact portions 73 are fixed to the gripping portion 71, and the predetermined interval A in the pair of contact portions 72 and the predetermined interval B in the pair of contact portions 73 are nominally mutually. Since the ropes 3 are different from each other in correspondence with the plurality of ropes 3 having different diameters, the elevator rope diameter checking jig 7 can be used for checking each of the ropes 3 having different nominal diameters.

  Further, since the distance between the pair of contact portions 72 coincides with the diameter of the rope 3 when the rope 3 is reduced in diameter by a predetermined amount, the elevator rope diameter inspection jig 7 detects the diameter reduction of the rope 3. be able to.

  In addition, the elevator rope diameter inspection jig 7 further includes a fall prevention wire 74 provided on the grip body 713 and connected to the maintenance inspection worker. The elevator rope diameter inspection jig 7 can be prevented from falling onto the floor 300 when it is accidentally dropped from the hand.

  In the first embodiment, the rope 3 that lifts and lowers the car 1 and the counterweight 2 has been described as an example. However, the rope 3 moves together with the car 1 and adjusts the speed for detecting the overspeed of the car 1. A machine rope may be used.

  In the first embodiment, the rope 3 is deformed by taking the diameter reduction of the rope 3 as an example. However, the rope 3 is deformed such that a protrusion protruding in the radial direction is formed on a part of the rope 3. May be.

  1 car, 2 counterweight, 3 rope (elevator rope), 4 hoisting machine, 5 car side return wheel, 6 counterweight side return car, 7 elevator rope diameter inspection jig, 11 car body, 12 car suspension car , 21 counterweight body, 22 counterweight suspension car, 31 rope cage suspension car part, 32 adjacent rope (adjacent elevator rope), 33 strand, 71 gripping part, 72 contact part, 73 contact part, 74 fall prevention wire ( Fall prevention tool), 100 hoistway, 200 upper wall, 300 floor, 711 bending portion, 712 bending portion, 713 gripping portion main body, 714 through hole.

Claims (5)

An elevator rope diameter inspection jig for detecting the deformation of each of a plurality of elevator ropes arranged in the width direction,
A gripping part gripped by a maintenance inspection worker;
A pair of contact portions provided at a predetermined interval so that the elevator rope is sandwiched therebetween, and fixed to the grip portion;
The grip portion is adjacent to the elevator rope sandwiched between the pair of contact portions from the elevator rope sandwiched between the pair of contact portions when the pair of contact portions sandwich the elevator rope in the width direction. Extending to one side in the depth direction of the elevator rope than the adjacent elevator rope that is the matching elevator rope, and the pair of contact portions sandwich the elevator rope in the depth direction, the sandwiched between the pair of contact portions An elevator rope diameter inspection jig characterized in that it is formed so as to extend from an elevator rope to one side in the depth direction relative to the adjacent elevator rope. Each of the pair of contact portions is formed to extend along the elevator rope when the pair of contact portions sandwich the elevator rope.
2. The dimension of each of the pair of contact portions in the longitudinal direction is equal to or more than a distance connecting peak portions of two strands arranged in the longitudinal direction of the elevator rope. Elevator rope diameter inspection jig. A plurality of the pair of contact portions are fixed to the grip portion,
3. The elevator rope according to claim 1, wherein the predetermined distance in each of the pair of contact portions is different from each other corresponding to the plurality of elevator ropes having different nominal diameters. Diameter inspection jig.   The elevator according to any one of claims 1 to 3, wherein the predetermined interval is equal to a diameter of the elevator rope when the elevator rope is reduced in diameter by a predetermined amount. Rope diameter inspection jig.   The elevator rope diameter inspection jig according to any one of claims 1 to 4, further comprising a fall prevention tool provided on the grip portion and connected to a maintenance inspection worker.

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