KR101185764B1 - jig for checking abrasion of a hoist rope and measuring a undercut of a traction sheave - Google Patents

Abstract

The present invention relates to an undercut measurement and a rope wear inspection jig, and four legs (10a) capable of inspecting the diameter of the 8mm, 12mm rope groove undercut and 8mm, 10mm, 12mm, 14mm rope, respectively. A cross-shaped body portion 10 having 10b, 10c, and 10d; An undercut measuring rod (20) inserted into the guide groove (11) formed in the longitudinal direction on two legs forming a straight line of the cross-shaped body portion (10) and inserted into the undercut to measure the depth of the undercut; A pair of left and right supports 30a and 30b fixed to the body portion 10 to support the undercut measuring rod 20 so as not to fall out of the guide groove 11; An undercut indicator 40 attached to the middle of the undercut measuring rod 20 to display the depth of the undercut when the undercut measuring rod 20 is inserted into the undercut; The scale display part which is displayed adjacent to the guide groove 11 corresponding to the middle part of the two leg which forms another straight line of the cross-shaped body part 10, and displays the depth of the undercut measured by the undercut indicator 40. It consists of (50) and can check 4 pulley undercut wear and 4 rope wear with one jig, and also undercut only by inserting into undercut and inserting into the measuring groove of inspection jig without complicated measurement and calculation The depth of the wire and the wear of the rope can be measured.

Description

Jig for checking abrasion of a hoist rope and measuring a undercut of a traction sheave}

The present invention relates to an undercut measurement and a rope wear test jig, and more particularly, to an undercut measurement and a rope wear test jig that can simultaneously measure the wear of the elevator rope and the undercut wear of the pulley used in the hoist of the elevator. .

In general, elevators are connected by a cable with a lift cage and counterweight pulleys loaded with a person or cargo, and when the pulley is turned by a motor, the elevator cage and counterweights rise and fall in opposite directions along the guide rails on both sides. It is used as an important means of transporting passengers on each floor in high rise buildings.

Rope type elevators use the friction force between the pulley and the wire rope to move the elevator cage. Generally, the total weight of the elevator cage and the total weight of the counterweight are different, so the rope extension on both sides is fine, but the pulley and the rope while the rope is passing through the pulley The micron unit slips in between and wears out over long periods of time.

As the groove of the pulley is worn down, the frictional force is also reduced, and in the case of a lot of wear, the wire rope may slide badly in the pulley.

The U-shaped groove is formed so that the rope can be wound around the pulley, and the U-shaped groove has a low coefficient of friction. Therefore, the friction coefficient is increased by using an undercut groove cut out of the U-shaped groove.

The undercut formed to increase the friction between the pulley and the rope has a prescribed value such that the residual amount should be 1mm or more, and the height difference between the main rope strands should be 2mm.However, since there is no accurate measuring method, it is necessary to use a vernier caliper or metal ruler Measured with D- (A, B, C) -Φ as shown in 1a.

This conventional measuring method is difficult to measure and the number of times of measurement because it is necessary to measure the exact D value, the diameter of each of the three ropes, and the distance between the metal rope and the three ropes wound on the pulley Since the work is cumbersome, there was a problem that the inspection time is long.

In order to solve this problem, a representative example is an elevator pulley inspection jig disclosed in Korean Patent No. 10-0950691.

1B shows an example of inspecting an undercut using a pulley jig for an elevator according to the prior art.

Pulley jig for elevator according to the prior art is a jig body (1), the support means (2) formed on one end of the jig body (1) and supported in the rope groove (b) of the pulley (a), and the jig It consists of a coupling means for coupling the measuring device 3 to the other end of the body 1, and a measuring member guide means for guiding the measuring member 4 of the measuring device 3 to protrude to the outside of the support means (2). .

However, the pulley jig for elevators according to the related art has a diameter of the rope groove depending on the diameter of the rope wound on the rope groove of the pulley. According to the rope diameter, a number of pulley jigs are required, and another important item for inspecting the safety of an elevator is that it cannot function to measure the wear of the rope.

The present invention is to solve the above problems, an object of the present invention is to provide an undercut measurement and rope wear inspection jig that can check the wear of the undercut and rope of the elevator pulley.

Another object of the present invention is to provide an undercut measurement and a rope wear inspection jig that can inspect various kinds of pulley undercut wear and various kinds of rope wear with one inspection jig.

Another object of the present invention is to check the wear and wear of the rope and undercut measurement to inspect the different types of pulley undercut wear and different types of rope wear simply by inserting into the inspection jig without the need of complicated calculation by various measurements To provide a jig.

In order to achieve the above object, the undercut measurement and rope wear test jig according to the present invention has a plurality of rope measuring grooves each capable of inspecting the diameter of the elevator rope and the leg measuring the undercut of the rope groove formed in the elevator pulley. A body portion having a formed leg; An undercut measuring rod inserted into the guide groove formed in the longitudinal direction on two legs forming a straight line of the body and inserted into the undercut to measure the depth of the undercut; A pair of left and right supports fixed to the body part to support the undercut measuring rods from falling out of the guide grooves; And an undercut indicator attached to the middle of the undercut measuring rod to indicate the depth of the undercut when the undercut measuring rod is inserted into the undercut.

It is characterized in that it further comprises a scale display portion displayed adjacent to the guide groove corresponding to the middle portion of the two legs forming another straight line according to the present invention to display the depth of the undercut measured by the undercut indicator .

The undercut of the rope groove undercut measuring leg according to the present invention is characterized in that it is possible to measure the undercut of the rope grooves of different types by respectively combining the measuring jig for measuring the undercut of the rope grooves of different types. do.

The left leg and the right leg of the four legs according to the present invention measure the undercut of the rope groove in a straight line to the left and right, and the upper and lower legs to form a straight line up and down to examine the diameter of the elevator rope, respectively It is characterized by having a plurality of measuring grooves.

A plurality of measuring grooves that can each inspect the diameter of the elevator rope according to the invention is characterized in that the interval of 90 ~ 94% of the inspection diameter.

The measuring groove having a smaller diameter among the plurality of measuring grooves each capable of inspecting the diameter of the elevator rope according to the present invention may be formed closer to the jig center of the leg than the measuring groove having the larger diameter, respectively. do.

Accordingly, according to the present invention, the undercut measuring rod and the measuring groove for measuring the degree of wear of the rope can be provided on the plurality of legs attached to the body so that the undercut of the various types of rope grooves and the diameters of the various types of ropes can be respectively examined. Jig of can check different kinds of pulley undercut abrasion and various rope abrasion, and also it can be inserted into the undercut and inserted into the measuring groove of the inspection jig without complicated measurement and calculation. It can be measured.

Figure 1a is an embodiment for inspecting the undercut of the elevator pulley by using a vernier caliper and a metal rule according to the prior art,
Figure 1b is an embodiment for inspecting the undercut of the elevator pulley with an undercut inspection jig according to the prior art,
Figure 2 is a perspective view of the undercut measurement and rope wear inspection jig according to the present invention,
Figure 3 is an embodiment for measuring the depth of the undercut is inserted into the undercut measuring rod of the 8mm rope undercut rod according to the present invention,
4A and 4B are perspective views showing the state before and after the 10 mm measuring jig is coupled to the 8 mm undercut measuring leg according to the present invention;
Figure 5 is an embodiment for measuring the depth of the 10mm rope undercut by coupling the 10mm measuring cylinder jig to the 8mm undercut measuring leg according to the present invention,
6 is an embodiment for inspecting the wear of the elevator 8mm rope with the inspection jig according to the present invention,
7a and 7b is an embodiment for inspecting rope worn less than 93% and rope worn more than 93% with the test jig according to the present invention.

Hereinafter, the technical details of the present invention through the specific embodiments shown in the accompanying drawings in detail.

2 is a perspective view of the undercut measurement and rope wear inspection jig according to the present invention.

Undercut measurement and rope wear test jig according to the present invention is the four legs (10a, 10b, 8mm, 12mm rope groove undercut and 8mm, 10mm, 12mm, 14mm rope diameter can be inspected, respectively) A cross-shaped body portion 10 having 10c and 10d); An undercut measuring rod (20) inserted into the guide groove (11) formed in the longitudinal direction on two legs forming a straight line of the cross-shaped body portion (10) and inserted into the undercut to measure the depth of the undercut; A pair of left and right supports 30a and 30b fixed to the body portion 10 to support the undercut measuring rod 20 so as not to fall out of the guide groove 11; An undercut indicator 40 attached to the middle of the undercut measuring rod 20 to display the depth of the undercut when the undercut measuring rod 20 is inserted into the undercut; The scale display part which is displayed adjacent to the guide groove 11 corresponding to the middle part of the two leg which forms another straight line of the cross-shaped body part 10, and displays the depth of the undercut measured by the undercut indicator 40. It consists of 50.

The cross-shaped body portion 10 has four legs 10a, 10b, 10c, and 10d, and the left and right legs 10a and the right leg 10b that form a straight line to the left and right guide grooves 11 to cross the left and right. Is formed.

An undercut measuring rod 20 is inserted into the guide groove 11, and an undercut indicator 40 is attached to the center of the undercut measuring rod 20 so that the undercut measuring rod 20 slides along the guide groove 11. As it protrudes, it is inserted into the undercut to measure the depth of the undercut.

3 shows an embodiment in which an undercut measuring rod of an 8 mm rope according to the present invention is inserted into an undercut of a pulley to measure the depth of the undercut.

  The 8 mm undercut measuring leg 10a of the measuring jig of this invention is formed so that the edge part may have a circumference of 8 mm. After inserting the 8mm undercut measuring leg 10a into the 8mm rope groove 101, and inserting the undercut measuring rod 20 into the undercut 102 of the 8mm rope groove, the undercut indicator 40 as shown in the undercut ( The depth of the undercut 102 corresponds to 6 mm by moving downward by the depth of 102 and pointing to a corresponding scale (eg, “6”) of the scale display unit 50.

In the case of inspecting the undercut of the 10 mm rope groove, the undercut measurement after coupling the 10 mm cylindrical jig 60 to the screw hole 61 formed on the bottom of the 8 mm undercut measuring leg 10a as shown in FIGS. 4A and 4B. The rod 20 may be inserted into the undercut 104 of the 10 mm rope groove and the depth thereof may be measured by the method described above.

5 shows an embodiment of measuring the depth of the undercut by inserting a 10mm measuring cylinder jig to an 8mm undercut measuring leg according to the present invention and inserting the 10mm rope undercut.

After inserting the 10 mm measuring cylinder jig 60 into the 10 mm rope groove 103 while the 10 mm measuring cylinder jig 60 is coupled to the 8 mm undercut measuring leg 10 a of the measuring jig according to the present invention, the undercut measurement is performed. When the rod 20 is inserted into the undercut 104 of the 10 mm rope groove, the undercut indicator 40 moves downward by the depth of the undercut 104 as described in FIG. 3 to adjust the corresponding scale of the scale indicator 50. By pointing it can measure the depth of the undercut 104.

The 12mm undercut measuring leg 10b is formed on the opposite side of the 8mm undercut measuring leg 10a, and after inserting the 12mm undercut measuring leg 10b into the 12mm rope groove as shown in FIG. When the rod 20 is inserted into the undercut of the 12mm rope groove, the depth of the undercut of the 12mm rope groove can be measured by reading the corresponding scale of the scale display part 50 indicated by the undercut indicator 40.

In addition, in the case of inspecting the undercut of the 14mm rope groove, as shown in FIGS. 4A and 4B, the 14mm measuring cylindrical jig 70 is coupled to the screw hole 71 formed at the bottom of the 12mm undercut measuring leg 10b. The undercut measuring rod 20 can be inserted into the undercut of a 14 mm rope and the depth thereof can be measured as described in the undercut measurement of a 10 mm rope.

In the above description, the undercut of the rope groove is specifically illustrated by way of example, but it is provided to help a more general understanding of the present invention, and the technical concept of the present invention is not limited to the diameters of the above-described rope groove. It will be apparent to one of ordinary skill in the art that the present invention has been described as one of many embodiments.

The measuring jig according to the present invention is a measuring groove (80a) to measure the wear of the rope of 8mm, 12mm, 10mm, 14mm diameter on the rope measuring legs (10c, 10d) to form a straight line up and down to measure the wear of the rope , 80b, 80c, 80d). Herein, ropes of 8 mm, 12 mm, 10 mm, and 14 mm diameters are just one example, and the technical idea of the present invention may be applied to ropes of smaller or larger diameters without being limited to the ropes of the diameters.

The 8mm rope measuring groove 80a is formed at the side close to the jig center of the first rope measuring leg 10c, and the 12mm rope measuring groove 80b is formed at the side away from the jig center. Since the wear of elevator ropes is allowed to be 90 ~ 94%, for example, if the wear of the rope is 93%, the measuring grooves 80a and 80b of 8mm and 12mm ropes are 8mm × 0.93 = 7.54mm and 12mm, respectively. It is configured to have an interval of x 0.93 = 11.16 mm.

Similarly, a 10mm rope measuring groove 80c is formed at the side close to the jig center of the second rope measuring leg 10d, and a 14mm rope measuring groove 80d is formed at the side far from the jig center. When 93% of wear is allowed, the measuring grooves 80c and 80d of the 10mm and 14mm ropes are configured to have a gap of 10mm × 0.93 = 9.3mm and 14mm × 0.93 = 13.02 mm, respectively.

Figure 6 shows an embodiment for inspecting the wear of the 8mm rope for the elevator with a test jig according to the present invention.

Elevator ropes are defined to use more than three lines, but this embodiment shows an example of checking the wear of one line of 8mm rope for convenience of description. As shown in the drawing, the first rope measuring leg 10c horizontally approaches the first rope measuring leg 10c of the measuring jig according to the present invention in a state where the 8 mm rope 91 is vertically installed to connect the hoist and the elevator car. The 8 mm rope 91 is inserted into the measuring groove 80a of the 8 mm rope of (10c) while maintaining the right angle.

 The interval of the 8mm rope measuring groove 80a is 7.54mm, for example 93% of 8mm when allowing 93% of the wear of the rope, so that the 8mm rope 91 is not worn more than 93%, as shown in FIG. 7A. As shown in the figure, the state is hung without being inserted into the 8 mm rope measuring groove 80a.

As shown in Fig. 7b, the 8mm rope measuring groove 80a of the inspection jig according to the present invention has a diameter of 7.54 mm, and only the rope 91a worn 93% or more of the inspection jig according to the present invention has a 8mm rope measuring groove ( 80a) can be inserted into the rope measuring groove, without having to measure with a ruler such as vernier caliper, it is possible to know whether the rope is worn.

 A second rope measuring leg 10d is formed on the opposite side of the first rope measuring leg 10c, and a 10 mm rope measuring groove 80c is provided on the side close to the jig center of the second rope measuring leg 10d. The 14mm rope measuring groove 80d is formed at the side far from the center of the jig.

 Like the first rope measuring leg 10c, for example, when the rope wear is allowed 93%, the measuring grooves 80c and 80d of the 10mm and 14mm ropes are respectively 10mm × 0.93 = 0.93mm and 14mm × 0.93 = 13.02. It is formed to have a gap of mm.

Therefore, as shown in Figs. 7A and 7B, the 10 mm, 12 mm, and 14 mm rope measuring grooves 80b, 80c, and 80d of the inspection jig according to the present invention also allow the diameter of the rope to be inspected (for example, 93%), ropes worn over the tolerance can fit into the respective rope measuring grooves 80b, 80c, 80d, and ropes not worn over the tolerance (for example 93%) can be fitted into the respective rope measuring groove 80b. , 80c, 80d can not be inserted into the 10mm, 12mm, 14mm rope measuring groove (80b, 80c, 80d) can be seen whether the wear of the rope.

10: body part 10a, 10b, 10c, 10d: leg
11: Guide groove 20: Pressure-operated opening and closing seat
30a, 30b: Support 40: Undercut indicator
50: scale indicator 60: cylindrical jig for measuring 10 mm
70: 14mm measuring cylinder jig 80a, 80b, 80c, 80d: measuring groove
91: 8 mm rope

Claims (6)

Legs 10c and 10b for measuring the undercut of the rope grooves formed in the elevator pulley and a plurality of rope measuring grooves 80a, 80b, 80c, and 80d each capable of inspecting the diameter of the rope for the elevator 10c, A body portion 10 having 10d);
An undercut measuring rod 20 inserted into the guide groove 11 formed in the longitudinal direction on two legs 10a and 10b forming a straight line of the body part 10 and inserted into the undercut to measure the depth of the undercut; ;
A pair of left and right supports 30a and 30b fixed to the body portion 10 to support the undercut measuring rod 20 so as not to fall out of the guide groove 11;
Undercut measurement and wear of the rope is characterized in that it is attached to the middle of the undercut measuring rod 20 is composed of an undercut indicator 40 for displaying the depth of the undercut when the undercut measuring rod 20 is inserted into the undercut Jig. The depth of the undercut measured by the undercut indicator 40 is displayed adjacent to the guide groove 11 corresponding to the middle portion of the two legs forming another straight line of the body portion 10. Undercut measurement and rope wear inspection jig, characterized in that it further comprises a scale display unit 50 to display. The method according to claim 1, wherein the cylindrical cylindrical jig (60, 70) for measuring the undercut of different types of rope grooves is respectively coupled to the ends of the undercut measuring legs (10a, 10b) of the rope grooves. Undercut measurement and rope wear inspection jig, characterized in that the undercut of the rope groove can be measured. The left leg 10a and the right leg 10b of the four legs 10a, 10b, 10c, and 10d, which are in a straight line, measure an undercut of the rope groove and form a straight line up and down. The upper leg 10c and the lower leg 10d have a plurality of measuring grooves 80a, 80b, 80c, and 80d for inspecting the diameter of the elevator rope, respectively. Wear inspection jig. 5. The undercut measurement according to claim 4, wherein the plurality of measuring grooves (80a, 80b, 80c, 80d) capable of respectively inspecting the diameter of the elevator rope have an interval of 90 to 94% of the corresponding inspection diameter. And jig of rope wear. The measuring grooves (80a, 80b) having a smaller diameter among the plurality of measuring grooves (80a, 80b, 80c, 80d) capable of respectively inspecting the diameter of the elevator rope have a larger diameter. Undercut measurement and rope wear inspection jig, characterized in that each formed closer to the jig center of the legs (10c, 10d) than the measuring grooves (80b, 80d).

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