JP4400240B2 - Rope groove measuring instrument and measuring method - Google Patents

Description

  The present invention relates to a measuring instrument for measuring the wear amount of a rope groove provided on the surface of a sheave, a belt or the like in a sheave or belt such as an elevator using a main rope, and a measuring method using the measuring instrument. It is.

Measurement of the rope groove of a conventional sheave such as an elevator will be described with reference to FIGS. 4 to 6 (see Patent Document 1). FIG. 4 is a schematic view of the elevator, and FIGS. 5 and 6 are front views of the measuring instrument. In the figure, 2 is a main rope which connects the car 1 and the counterweight 5 and is wound around the rope groove 4 of the sheave 3, and 6 is an undercut portion provided in the rope groove 4.
Reference numeral 9 denotes a caliper fixing portion constituting the measuring instrument, and a base 11 is fixed to the end portion thereof with a screw 12. The height D of the back surface of the platform 11 is set to the protruding height of the main rope 2 from the surface of the sheave 3 when the main rope 2 is wound around the rope groove 4 without wear. Reference numeral 8 denotes a vernier caliper movable portion, and a disk 13 having the same shape as the cross section of the main rope 2 is fixed to the end of the caliper by a screw 14. C is the distance between the back surface of the base 11 and the disk 13. Therefore, when the disc 13 is inserted into the rope groove 4 when the rope groove 4 is not worn, the base 11 and the disc 13 come into contact with each other as shown in FIG.

  When the wear amount of the rope groove 4 is measured by this measuring device, the position of the disk 13 in contact with the table 11 is moved by moving the caliper movable portion 8 (the interval C is adjusted to 0). And the stand 11 is stood on the surface of the sheave 3 and the caliper movable part 8 is moved to bring the disk 13 into contact with the rope groove 4. The distance C between the base 11 and the disk 13 at this time represents the wear amount of the rope groove 4.

Further, the measurement of the rope groove is necessary not only for the rope groove 4 of the sheave 3 but also for the driving device that drives the main rope by the belt. This example will be described with reference to FIG. 7 (see Patent Document 2). The driving device 100 attaches the sheave 42 to the frame 160 and arranges rollers 161, 162, and 163 at three locations above and on the left and right sides of the sheave 42, and a belt 164 is stretched around these rollers 161, 162, and 163. The belt 164 presses the main rope 2 wound around the sheave 42 toward the sheave 42. A motor (not shown) is connected to the upper roller 161 on the back surface of the frame 160. Further, the rollers 162 and 163 on both sides are attached so that the height position can be adjusted by the position adjusting mechanism 165, and the tension of the belt 164 can be adjusted by adjusting the height position. The belt 164 is formed with rope grooves 166 on the side pressed by the main rope 2, and the measuring instrument can be used also in measuring the rope grooves 166.
JP-A-1-235801 International Publication No. 02/064482 Pamphlet

In the prior art, there is a problem that the configuration is complicated because an accurate value of the wear amount of the rope groove 4 is to be measured. There is also a problem that the measurement work is difficult when the sheave 3 is in the elevator hoistway or when the scaffolding is not good.
The present invention changes the viewpoint from the conventional one and does not measure the wear amount accurately but measures whether the wear amount is in a normal range.

The present invention relates to a measuring instrument for measuring a wear amount of a rope groove such as a sheave or a belt provided with a plurality of rope grooves around which a main rope is wound on a surface portion. Having a pair of convex portions that can be simultaneously brought into contact with a position where they contact each other and an intermediate portion formed between the two convex portions, the height of the convex portion from the intermediate portion being the first It is a rope groove measuring instrument provided with the 1st measurement part which is a value, and the 2nd measurement part whose height of the convex part from the middle part is the 2nd value larger than the 1st value similarly.
Further, the present invention provides a measuring instrument for measuring the wear amount of a rope groove such as a sheave or a belt provided with a plurality of rope grooves around which the main rope is wound, and the main rope at the bottom of the rope groove contacts. A first measuring unit having a convex part that can contact the position and a flat part formed on both sides of the convex part, and the height of the convex part from the flat part is the first value; It is a rope groove measuring device provided with the 2nd measurement part whose height of the convex part from a flat part is the 2nd value larger than the 1st value.

Furthermore, in the present invention, a mark for distinguishing the first measurement unit and the second measurement unit is attached to the measuring instrument.
Further, the present invention is such that a brake pad is provided in a brake portion of a driving device to which a sheave, a belt, or the like is attached, and the thickness of the measuring device is made to coincide with a normal range dimension of a predetermined portion of the brake pad. is there. Further, in a drive device to which a sheave, a belt or the like is attached, provided with a gap detection switch, the thickness of the measuring device is made to coincide with the size of the normal range of the gap.

Further, the present invention provides a measuring method for measuring an abrasion amount of a rope groove such as a sheave or a belt provided with a plurality of rope grooves around which a main rope is wound on a surface portion. A configuration having a pair of convex portions that are capable of simultaneously contacting the position where the rope contacts and an intermediate portion formed between the two convex portions, the height of the convex portion from the intermediate portion being the first A first measuring unit having a value and a second measuring unit having a second value whose height from the middle part is a second value greater than the first value. When a gap is formed between the intermediate part and the surface part when the part is inserted into the rope groove, the intermediate part and the surface part are in contact with each other when the convex part of the first measurement part is inserted into the rope groove, And when there is a gap between the intermediate part and the surface part when the convex part of the second measuring part is inserted into the rope groove First abnormality, when the convex portion of the second measuring unit and the intermediate portion and the surface portion is in contact when inserted into the rope groove is a rope groove measuring method comprising the step of determining the second abnormality, and.
Further, the present invention provides a measuring method for measuring the wear amount of a rope groove such as a sheave or a belt provided with a plurality of rope grooves around which a main rope is wound, and the main rope at the bottom of the rope groove contacts. A first measuring unit having a convex portion that is in contact with the position, and flat portions formed on both sides of the convex portion, and the height of the convex portion from the flat portion is a first value; A step of preparing a measuring device having a second measuring unit having a second value larger than the first value, the height of the convex part from the flat part, and coloring the surroundings of the rope groove, When the convex part of the first measurement part is inserted into the rope groove and moved in the longitudinal direction of the rope groove, the colorant at the bottom of the rope groove peels off and the colorant at the flat part does not peel off. When the convex part is inserted into the rope groove and moved in the longitudinal direction of the rope groove, the bottom of the rope groove The colorant at the flat part peels off without the colorant peeling off, and the colorant at the bottom of the rope groove peels off when the convex part of the second measuring part is inserted into the rope groove and moved in the longitudinal direction of the rope groove. If the colorant at the flat part does not peel off, the first abnormality is detected. When the convex part of the second measurement part is inserted into the rope groove and moved in the longitudinal direction of the rope groove, the colorant at the bottom of the rope groove peels off. A method for measuring a rope groove characterized by including a step of determining that the colorant of the flat portion is peeled off without causing a second abnormality. .
The rope groove measuring method further includes a step of exchanging the sheaves and belts within a predetermined period when the first abnormality occurs, and immediately exchanging the sheaves and belts when the second abnormality occurs.

  In the present invention, the wear amount is not accurately measured unlike the conventional case, but whether the wear amount is in the normal range or not is measured. Therefore, the configuration of the measuring instrument is simplified, and the carrying and measurement work is also simplified. There is an effect that it can be easily performed.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a rope groove measuring device 50 according to the present embodiment. In the figure, reference numeral 20 denotes a first measuring part, which is composed of a pair of convex parts 21 and 21 and a linear intermediate part 22 formed between the two convex parts 21 and 21, and the convex part from the intermediate part 22. The height of 21 is the first value m1. The first value m1 is a value obtained by adding an allowable wear amount value that is a limit that the rope groove wear amount is allowable to the rope groove depth when there is no wear. Reference numeral 30 denotes a second measurement unit, which includes a pair of convex portions 31, 31 and a linear intermediate portion 32 formed between the convex portions 31, 31, and the height of the convex portion 31 from the intermediate portion 32. This is the second value m2. The second value m2 is a value obtained by adding an unacceptable wear amount value exceeding the allowable wear amount to the rope groove depth when there is no wear. Reference numeral 23 denotes a mark indicating the first measurement unit 20, and reference numeral 33 denotes a mark indicating the second measurement unit 30.

2A, 2 </ b> B, and 2 </ b> C show a method of measuring the wear amount of the rope groove 166 of the belt 164 by the rope groove measuring device 50. As shown in FIG. 2 (a), when the convex portion 21 of the first measurement unit 20 is inserted into the rope groove 166, if there is a gap between the surface portion 167 of the belt 164 and the intermediate portion 22, the wear progresses too much. Therefore, the belt 164 continues to be used as it is.
Next, as shown in FIG. 2B, when the wear of the rope groove 166 progresses and the convex portion 21 of the first measurement unit 20 is inserted into the rope groove 166, there is a gap between the surface portion 167 and the intermediate portion 22. If there is no gap between the surface portion 167 and the intermediate portion 32 when the convex portion 31 of the second measuring unit 30 is inserted into the rope groove 166, the belt 164 needs to be replaced within a predetermined period. Judge that there is, and replace the belt during the next maintenance.
Further, as shown in FIG. 2 (c), the wear of the rope groove 166 further progresses, and when the convex portion 31 of the second measurement unit 30 is inserted into the rope groove 166, there is a gap between the surface portion 167 and the intermediate portion 32. When there is not, it is determined that the belt needs to be replaced immediately.

According to the present embodiment, it is possible to easily determine whether the belt 164 needs to be replaced simply by inserting the first measurement unit 20 and the second measurement unit 30 into the rope groove 166.
In the above embodiment, the protrusions 21 and 31 preferably have the same protrusion as the cross section of the main rope 2, but the bottom of the rope groove 166 is in contact with the position where the main rope 2 contacts. I just need it. The intervals between the convex portions 21 and 21 and 31 and 31 coincide with the interval between the rope grooves 166, but in order to cope with a plurality of types having different intervals between the rope grooves 166, the convex portions 21 and 21, If the first and second measuring units having different distances 31 and 31 are provided in other portions of the rope groove measuring device 50, a single rope groove measuring device 50 can be used for maintenance of a plurality of models.

  FIG. 3 is a diagram showing a rope groove measuring device 60 according to another embodiment. In the figure, reference numeral 70 denotes a first measurement unit, flat portions 72, 72 are formed on both sides of the convex portion 71, and the height of the convex portion 71 from the flat portion 72 is the first value as in the above embodiment. m1. Reference numeral 80 denotes a second measurement unit, flat portions 82 and 82 are formed on both sides of the convex portion 81, and the height of the convex portion 81 from the flat portion 82 is the second value m2 as in the above embodiment. . Others are the same as FIG.

In the method of measuring the rope groove with the rope groove measuring device 60, first, chalk or the like is applied to the rope groove 166 of the belt 164 which is a measurement portion and the surface portion 167 around it. And the convex part 71 of the 1st measurement part 70 is inserted in the rope groove 166, and it slides about 5 cm to the longitudinal direction of the rope groove 166. FIG. At this time, if the choke at the bottom of the rope groove 166 is peeled off and the choke at the surface portion 167 on both sides of the rope groove 166 is left as it is, the wear has not progressed so much, so the belt 164 continues to be used as it is.
Next, when the wear of the rope groove 166 progresses, when the above operation is performed, the chalk at the bottom of the rope groove 166 does not peel off, but the chalk at the surface portion 167 peels off. At this time, when the same operation is performed using the convex portion 81 of the second measuring unit 80, when the choke at the bottom of the rope groove 166 is peeled off and the choke at the surface portion 167 is not peeled off, the belt 164 is removed within a predetermined period. Judge that replacement is necessary and replace the belt during the next maintenance.
Further, when the same operation is performed using the convex portion 81 of the second measuring unit 80, if the choke at the bottom of the rope groove 166 does not peel off and the choke at the surface portion 167 peels off, the belt needs to be replaced immediately. Judge.

In this embodiment, it is necessary to apply chalk or the like to the rope groove 166 and the surface portion 167 of the portion to be measured during measurement work. However, since the rope groove 166 can be measured one by one, the wear of a specific rope groove Even when is large, it can be detected reliably.
Also in this embodiment, it is desirable that the protrusions 71 and 81 have the same protrusion as the cross section of the main rope 2, but the shape is in contact with the position where the main rope 2 comes into contact with the bottom of the rope groove 166. I just need it. Further, the choke slide distance is not limited to 5 cm, and may be an appropriate distance, and other colorants may be used instead of the choke.

In each of the above embodiments, the case where the rope groove is a round groove or a U groove has been described. However, even if the rope groove is an undercut groove or a V groove shown in FIGS. , 81 is the bottom of the rope groove, and can be performed in the same manner as long as the shape contacts the position where the main rope 2 contacts. Further, if the rope groove measuring device is provided with the first and second measuring portions having different heights, the rope groove measuring device can be used for maintenance of a plurality of models having different allowable wear amounts. In each of the embodiments described above, the rope groove of the belt has been described.
In addition, when there is a brake pad in the brake part of the driving device to which the belt or the like is attached, if the thickness of the rope groove measuring devices 50 and 60 is matched with the dimension of the normal range of the predetermined part of the brake pad, It can also be used for maintenance. Further, when the gap detecting switch is provided in the drive device to which the belt or the like is attached, if the thickness of the rope groove measuring devices 50 and 60 is matched with the size of the normal range of the gap, the gap detecting switch can be adjusted. It can also be used.

It is a figure which shows the rope groove measuring device of embodiment of this invention. It is a figure which shows the usage method of the rope groove measuring device of this Embodiment. It is a figure which shows the rope groove measuring device of other embodiment of this invention. It is a figure which shows the schematic of the conventional elevator. It is a front view of the conventional rope groove measuring device. It is a front view of the conventional rope groove measuring device. It is a figure which shows an example of the conventional drive device.

Explanation of symbols

2 main rope 3 sheave 4,166 rope groove 20,70 first measurement part 21,31,71,81 convex part 22,32 intermediate part 23,33 mark 30,80 second measurement part 50,60 rope groove measuring instrument 72,82 Flat part 164 Belt 167 Surface part

Claims (8)

In a measuring instrument for measuring the wear amount of the rope groove such as a sheave or a belt provided with a plurality of rope grooves around which the main rope is wound on the surface portion,
It is a configuration having a pair of convex portions forming a shape that can be contacted at the same time and a middle portion formed between these convex portions at a position where the main rope contacts at the bottom of the adjacent rope groove, The height of the convex portion from the intermediate portion is the first value, and the height of the convex portion from the intermediate portion is also a second value larger than the first value. A rope groove measuring device comprising: a second measuring unit. In a measuring instrument for measuring the wear amount of the rope groove such as a sheave or a belt provided with a plurality of rope grooves around which the main rope is wound on the surface portion,
A convex portion having a shape capable of contacting a position where the main rope contacts the bottom of the rope groove; and flat portions formed on both sides of the convex portion, and the height of the convex portion from the flat portion. A first measurement unit having a first value, and a second measurement unit in which the height of the convex portion from the flat portion is a second value larger than the first value. Rope groove measuring instrument.   The rope groove measuring device according to claim 1 or 2, wherein a mark for distinguishing the first measuring unit and the second measuring unit is attached to the measuring device.   The brake unit of the driving device to which the sheave, the belt or the like is attached has a brake pad, wherein the thickness of the measuring device is equal to the normal range of the predetermined part of the brake pad. The rope groove measuring device according to any one of claims 1 to 3.   5. The drive device to which the sheave, the belt or the like is attached is provided with a gap detection switch, and the thickness of the measuring device is equal to the size of the normal range of the gap. The rope groove measuring instrument according to any one of the above. In the measuring method for measuring the wear amount of the groove such as a sheave or a belt provided with a plurality of rope grooves around which the main rope is wound on the surface portion,
It is a configuration having a pair of convex portions that form a shape that can be simultaneously contacted at a position where the main rope is in contact with a bottom portion of the adjacent rope groove, and an intermediate portion formed between the two convex portions, The height of the convex portion from the intermediate portion is a first value, and the height of the convex portion from the intermediate portion is also a second value greater than the first value. With a measuring instrument with two measuring units,
When a gap is formed between the intermediate part and the surface part when the convex part of the first measurement part is inserted into the rope groove, it is normal.
When the convex part of the first measuring part is inserted into the rope groove, the intermediate part and the surface part are in contact with each other, and when the convex part of the second measuring part is inserted into the rope groove, the intermediate part and When there is a gap between the surface portion and the first abnormality,
A method of measuring a rope groove, comprising: determining a second abnormality when the intermediate portion and the surface portion contact each other when the convex portion of the second measurement portion is inserted into the rope groove. In the measurement method for measuring the wear amount of the rope groove such as a sheave or a belt provided with a plurality of rope grooves around which the main rope is wound on the surface portion,
A convex portion having a shape capable of contacting a position where the main rope contacts the bottom of the rope groove; and flat portions formed on both sides of the convex portion, and the height of the convex portion from the flat portion. A measuring device comprising: a first measuring unit having a first value; and a second measuring unit having a second value in which the height of the convex part from the flat part is larger than the first value. Prepare
A step of coloring the rope groove to be measured and its surroundings;
When the colorant on the bottom of the rope groove is peeled off and the colorant on the surface part is not peeled off when the convex part of the first measurement part is inserted into the rope groove and moved in the longitudinal direction of the rope groove normal,
When the convex part of the first measurement part is inserted into the rope groove and moved in the longitudinal direction of the rope groove, the colorant on the surface part is peeled off without peeling off the colorant on the bottom part of the rope groove, And when the convex part of the second measurement part is inserted into the rope groove and moved in the longitudinal direction of the rope groove, the colorant at the bottom of the rope groove is peeled off and the colorant at the surface part is not peeled off Is the first abnormality,
When the colorant on the surface part peels off without inserting the colorant at the bottom of the rope groove when the convex part of the second measurement part is inserted into the rope groove and moved in the longitudinal direction of the rope groove. Has a step of determining that it is the second abnormality.   8. The method according to claim 6, further comprising a step of exchanging the sheaves and belts within a predetermined period when the first abnormality occurs, and immediately exchanging the sheaves and belts when the second abnormality occurs. The rope groove measuring method as described.

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