WO2019229890A1

WO2019229890A1 - Groove wear detection device

Info

Publication number: WO2019229890A1
Application number: PCT/JP2018/020820
Authority: WO
Inventors: 秀人安井
Original assignee: 三菱電機株式会社
Priority date: 2018-05-30
Filing date: 2018-05-30
Publication date: 2019-12-05
Also published as: CN112154300B; CN112154300A; JP6939994B2; WO2019230154A1; JPWO2019230154A1

Abstract

This groove wear detection device (1) comprises, for example: a support member (11); a movable member (12); a spring (13); a roller (14); a movable member (15); an adjustment mechanism (16); a bolt (17); and a detector (18). The movable member (12) and the movable member (15) are able to move in a direction B with respect to the support member (11) and the direction opposite to direction B. The bolt (17) fixes, to the support member (11), the movable member (15) which has been subjected to position adjustment by the adjustment mechanism (16). The detector (18) detects when the amount of groove wear has exceeded a permissible amount.

Description

Groove wear detector

This invention relates to a device for detecting groove wear.

Patent Document 1 describes a tool for measuring the wear amount of a groove. An elevator maintenance worker measures the wear amount of a groove formed in a driving sheave of the hoist using the tool described in Patent Document 1.

Japanese Unexamined Patent Publication No. 2014-97869

Elevator maintenance personnel must take necessary measures such as exchanging the drive sheave if the amount of wear on the drive sheave groove exceeds the allowable amount. When using the tool described in Patent Document 1, the maintenance staff visually confirms the wear amount while applying the tool to the groove. For this reason, there is a problem that a burden on maintenance personnel is heavy and time-consuming.

This invention has been made to solve the above-described problems. An object of the present invention is to provide a groove wear detection device that can easily detect that the amount of wear of a groove exceeds an allowable value.

A groove wear detection device according to the present invention includes a support member, a first movable member supported by the support member, movable in a first direction and a second direction opposite to the first direction with respect to the support member, A pressing member that presses the first movable member in the first direction; a contact member that is provided on the first movable member and that is pressed against a groove of a car around which the rope is wound; A second movable member movable in the direction and the second direction, an adjustment mechanism for adjusting the position of the second movable member relative to the support member, and the second movable member adjusted in position by the adjustment mechanism as a support member Based on the distance in the first direction between the fixed member that can be fixed and the specific part of the first movable member and the specific part of the second movable member, it is detected that the wear amount of the groove exceeds the allowable value. And a detector.

The groove wear detection device according to the present invention includes a support member, a first movable member, a pressing member, a contact member, a second movable member, an adjustment mechanism, a fixed member, and a detector. The first movable member and the second movable member are movable in the first direction and the second direction with respect to the support member. The detector detects that the wear amount of the groove has exceeded the allowable value based on the distance in the first direction between the specific part of the first movable member and the specific part of the second movable member. With the groove wear detection device according to the present invention, it can be easily detected that the amount of wear of the groove exceeds the allowable value.

It is a figure which shows the example of the elevator apparatus provided with the groove | channel wear detection apparatus in Embodiment 1. FIG. It is a front view which shows a groove wear detection apparatus. It is a side view which shows a groove wear detection apparatus. FIG. 4 is a view showing an AA cross section of FIG. 3. It is a figure which shows the AA cross section of the state which progressed abrasion of the groove | channel.

The present invention will be described with reference to the accompanying drawings. The overlapping description will be simplified or omitted as appropriate. In each figure, the same reference numerals indicate the same or corresponding parts.

Embodiment 1 FIG.
FIG. 1 is a diagram illustrating an example of an elevator apparatus provided with the groove wear detection apparatus 1 according to the first embodiment. The elevator apparatus includes, for example, a car 2 and a counterweight 3. The car 2 moves up and down the hoistway 4. The counterweight 3 moves up and down the hoistway 4. The car 2 and the counterweight 3 are suspended from the hoistway 4 by the main rope 5.

FIG. 1 shows an example in which a machine room 6 is formed above the hoistway 4. In the machine room 6, for example, a hoisting machine 7, a deflecting wheel 8, and a control device 9 are installed. The hoisting machine 7 includes, for example, an electric motor (not shown) and a driving sheave 10. The driving sheave 10 is driven by an electric motor. The electric motor of the hoisting machine 7 is controlled by the control device 9.

A plurality of grooves 10 a (not shown in FIG. 1) are formed in the driving sheave 10. A plurality of grooves (not shown) are formed in the deflector wheel 8. The main rope 5 is wound around the groove 10 a of the driving sheave 10 and the groove of the deflecting wheel 8. For example, the control device 9 controls the rotation and stop of the drive sheave 10. The main rope 5 moves according to the rotation of the driving sheave 10. The groove 10a of the drive sheave 10 is gradually worn by a minute slip of the main rope 5 or the like. The groove of the deflector wheel 8 is gradually worn by a minute slip of the main rope 5 or the like.

FIG. 2 is a front view showing the groove wear detecting device 1. FIG. 3 is a side view showing the groove wear detection device 1. FIG. 4 is a view showing a cross section taken along line AA of FIG. The groove wear detection device 1 is a device for detecting that the wear amount of the groove around which the rope is wound exceeds an allowable value. Hereinafter, an example in which the groove around which the rope is wound is the groove 10a of the drive sheave 10 will be described in detail.

The groove wear detection device 1 is disposed so as to face the driving sheave 10 from below, for example. The groove wear detection device 1 includes, for example, a support member 11, a movable member 12, a spring 13, a roller 14, a movable member 15, an adjustment mechanism 16, a bolt 17, and a detector 18.

The support member 11 is fixed to a fixed body provided in the machine room 6. The support member 11 is fixed to a stand (not shown) that supports the hoisting machine 7, for example.

The movable member 12 is supported by the support member 11. The movable member 12 is movable with respect to the support member 11 in a specific B direction and a direction opposite to the B direction. The B direction is a direction approaching the drive sheave 10, for example. In the example shown in the present embodiment, the movable member 12 is movable up and down.

The spring 13 is provided between the support member 11 and the movable member 12. The movable member 12 is pressed in the B direction by the spring 13. The spring 13 is an example of a member that presses the movable member 12 in the B direction. The movable member 12 includes a mounting portion 20, for example. A flat surface 20 a facing the B direction is formed on the mounting portion 20. In the example shown in the present embodiment, the spring 13 is disposed directly below the attachment portion 20.

The roller 14 is rotatably provided on the upper end portion of the movable member 12 via the shaft 21. The shaft 21 is disposed in parallel with the rotational axis of the drive sheave 10. In the example shown in the present embodiment, the roller 14 contacts the groove 10a of the drive sheave 10 from below. An upward force is applied to the movable member 12 by a spring 13. For this reason, the roller 14 is pressed against the groove 10 a from below by the force of the spring 13. The roller 14 is an example of a member pressed against the groove 10a. Since the roller 14 is pressed against the groove 10a, when the driving sheave 10 rotates, the roller 14 also rotates. For example, the roller 14 is disposed immediately above the mounting portion 20.

The movable member 15 is supported by the support member 11. The movable member 15 is movable in the B direction and the direction opposite to the B direction with respect to the support member 11. In the example shown in the present embodiment, the movable member 15 is movable up and down.

The movable member 15 includes an upper plate 22, for example. A flat surface 22a facing the direction opposite to the B direction is formed on the upper plate 22. The surface 22a is parallel to the surface 20a. In the example shown in the present embodiment, a part of the upper plate 22 is disposed immediately above the attachment portion 20. The surface 20 a of the mounting portion 20 faces the surface 22 a of the upper plate 22. Further, the part of the upper plate 22 is disposed directly below the roller 14.

The adjusting mechanism 16 is a mechanism for adjusting the position of the movable member 15 relative to the support member 11 in the B direction and the direction opposite to the B direction. In the example shown in the present embodiment, the position of the movable member 15 is adjusted up and down by the adjustment mechanism 16. The adjustment mechanism 16 includes, for example, a bolt 23 and a push-up member 24.

The bolt 23 is supported by the support member 11. Specifically, the bolt 23 is screwed into the screw hole 11 a formed in the support member 11. The bolt 23 can be displaced relative to the support member 11 in a specific C direction and a direction opposite to the C direction. The bolt 23 is displaced in the direction C or the direction opposite to the direction C according to the rotation direction. The C direction is perpendicular to both the B direction and the axial direction of the shaft 21. The bolt 23 is an example of an axis that can be displaced in the C direction.

The push-up member 24 is provided at the tip of the bolt 23. The push-up member 24 has a truncated cone shape, for example. The push-up member 24 is formed with an outer peripheral surface 24a having a radius that decreases in the direction C. In addition, an inclined surface 15 a is formed on the movable member 15. The inclined surface 15a is inclined so as to become lower toward the C direction. The upper part of the outer peripheral surface 24a of the push-up member 24 is in contact with the inclined surface 15a. For this reason, when the bolt 23 is displaced in the C direction, the movable member 15 is pushed by the push-up member 24 and displaced in the B direction. The push-up member 24 is an example of a member that converts the displacement of the bolt 23 in the C direction into the displacement of the movable member 15 in the B direction.

The bolt 17 fixes the movable member 15 to the support member 11. The bolt 17 passes through the long hole 11 b formed in the support member 11 and is screwed into the screw hole 15 b formed in the movable member 15. If the bolt 17 is not tightened, the movable member 15 is movable with respect to the support member 11. That is, if the bolt 17 is not tightened, the position of the movable member 15 can be adjusted by the adjusting mechanism 16. The movable member 15 is fixed to the support member 11 by tightening the bolt 17. The bolt 17 is an example of a member that fixes the movable member 15, whose position has been adjusted by the adjustment mechanism 16, to the support member 11.

The detector 18 detects that the wear amount of the groove 10a has exceeded an allowable value. The allowable value is set in advance. The detector 18 performs the above detection based on the distance in the B direction between the specific part of the movable member 12 and the specific part of the movable member 15. In the example shown in the present embodiment, the specific portion of the movable member 12 is the mounting portion 20. The specific portion of the movable member 15 is the upper plate 22. The detector 18 includes, for example, a detection member 25, a detection member 26, and a detection circuit 27.

The detection member 25 is provided on the surface 20a of the mounting portion 20. The detection member 26 is provided on the surface 22 a of the upper plate 22. The detection member 26 faces the detection member 25. In the example shown in the present embodiment, the detection member 26 is disposed immediately above the detection member 25. The spring 13, the detection member 25, the detection member 26, and the roller 14 are arranged in a straight line in the B direction.

The detection circuit 27 is electrically connected to the detection member 25. The detection circuit 27 is electrically connected to the detection member 26. The detection circuit 27 detects that the detection member 25 and the detection member 26 are in contact with each other. The detection circuit 27 may be built in the control device 9.

Next, the function of the groove wear detector 1 will be described with reference to FIG. FIG. 5 is a view showing an AA cross section in a state where the wear of the groove 10a has progressed.

Curve D shown in FIGS. 4 and 5 shows the groove 10a that is not worn. As described above, the roller 14 is pressed against the groove 10 a by the spring 13. For this reason, the position of the surface 20a of the mounting portion 20, that is, the position of the detection member 25 is determined by the position where the roller 14 contacts the groove 10a. Curves D ′ shown in FIGS. 4 and 5 indicate the groove 10a in which wear has progressed. For example, consider a case where it is determined that the wear is abnormal when the wear amount of the groove 10a reaches the allowable value V. A curve D ′ shows the groove 10a whose wear amount is an allowable value V.

The elevator maintenance staff adjusts the gap G in the B direction between the detection member 25 and the detection member 26 to the allowable value V by rotating the bolt 23 while the roller 14 is pressed against the groove 10a. In the example shown in the present embodiment, the scale 12 a is formed on the movable member 12. A scale 15c is formed on the movable member 15 so as to be adjacent to the scale 12a when viewed from the C direction. Further, a window 15 d for confirming the detection member 25 and the detection member 26 while operating the bolt 23 is formed in the movable member 15. For this reason, the maintenance staff can easily perform the operation of adjusting the interval G to the allowable value V. When the maintenance person adjusts the gap G to the allowable value V, the bolt 17 is tightened to fix the movable member 15 to the support member 11.

As described above, the groove 10a gradually wears. Since the roller 14 is always pressed against the groove 10a by the spring 13, when the wear of the groove 10a proceeds, the movable member 12 moves in the B direction. That is, when the wear of the groove 10a proceeds, the detection member 25 approaches the detection member 26. When the wear amount of the groove 10a exceeds the allowable value V as shown in FIG. That is, the detection member 25 comes into contact with the detection member 26. As a result, the detection circuit 27 detects that the detection member 25 and the detection member 26 are in contact with each other.

In the example shown in the first embodiment, the detector 18 can detect that the wear amount of the groove 10a has reached the allowable value V. The maintenance staff does not need to measure the wear amount of the groove 10a by using a dedicated tool or the like every time the elevator is inspected. For this reason, it can be easily detected that the wear amount of the groove 10a has reached the allowable value V.

In the present embodiment, the example in which the detection circuit 27 detects the contact between the detection member 25 and the detection member 26 has been described. This is an example. The detector 18 may include, for example, a photoelectric device. The detection circuit 27 may determine the distance in the B direction between the mounting portion 20 and the upper plate 22 based on a signal from the photoelectric device, and may detect that the wear amount of the groove 10a exceeds an allowable value.

In the present embodiment, the example in which the spring 13, the detection member 25, the detection member 26, and the roller 14 are arranged in a straight line in the B direction has been described. This is an example. However, if it is an example shown to this Embodiment, the groove wear detection apparatus 1 can be reduced in size.

In the present embodiment, the example in which the groove wear detection device 1 detects the abnormal wear of the groove 10a of the drive sheave 10 has been described. . Abnormal wear of a vehicle groove around which a rope other than the main rope 5 is wound may be detected by the groove wear detection device 1.

The groove wear detection device according to the present invention can be used to detect the wear of a groove of a car around which a rope is wound.

1 groove wear detector, 2 cages, 3 counterweights, 4 hoistways, 5 main ropes, 6 machine rooms, 7 hoisting machines, 8 sled wheels, 9 control devices, 10 drive sheaves, 10a grooves, 11 support members, 11a screw hole, 11b long hole, 12 movable member, 12a scale, 13 spring, 14 roller, 15 movable member, 15a inclined surface, 15b screw hole, 15c scale, 15d window, 16 adjustment mechanism, 17 bolt, 18 detector, 20 mounting part, 20a surface, 21 shaft, 22 upper plate, 22a surface, 23 bolt, 24 push-up member, 24a outer peripheral surface, 25 detection member, 26 detection member, 27 detection circuit

Claims

A support member;
A first movable member supported by the support member and movable in a first direction and a second direction opposite to the first direction with respect to the support member;
A pressing member that presses the first movable member in the first direction;
A contact member provided on the first movable member and pressed against a groove of a car around which the rope is wound;
A second movable member supported by the support member and movable in the first direction and the second direction with respect to the support member;
An adjustment mechanism for adjusting the position of the second movable member with respect to the support member;
A fixing member capable of fixing the second movable member whose position is adjusted by the adjusting mechanism to the support member;
A detector that detects that the amount of wear of the groove exceeds an allowable value based on a distance in the first direction between the specific part of the first movable member and the specific part of the second movable member;
A groove wear detection device comprising:
The detector is
A first detection member provided at the specific part of the first movable member;
A second detection member that is provided at the specific portion of the second movable member, faces the first detection member, and contacts the first detection member by moving the first movable member in the first direction; ,
A detection circuit for detecting that the first detection member and the second detection member are in contact;
The groove wear detection device according to claim 1, comprising:
The groove wear detection device according to claim 2, wherein the pressing member, the first detection member, the second detection member, and the contact member are arranged in a straight line in the first direction.
The adjusting mechanism is
An axis supported by the support member and displaced in a third direction perpendicular to the first direction;
A conversion member that converts displacement of the shaft in the third direction into displacement of the second movable member in the first direction;
The groove wear detection device according to any one of claims 1 to 3, further comprising:
The groove wear detection device according to any one of claims 1 to 4, wherein the contact member is a roller rotatably provided on the first movable member.
The rope is a main rope for suspending an elevator car and a counterweight;
The groove wear detection device according to any one of claims 1 to 5, wherein the vehicle is a driving sheave around which the main rope is wound.