JP5937952B2 - Sheave main grooving wear measurement method - Google Patents

Description

  The present invention relates to a sheave main grooving wear measuring method using a main grooving wear measuring device in order to measure wear of a sheave main grooving of a hoisting machine used in an elevator.

  In an elevator sheave on which a main rope that suspends a lifting body is wound, as an example of a conventional technique for measuring the wear state of a sheave main rope groove, an index that indicates the degree of wear is attached as shown in Patent Document 1, for example. It is disclosed that the gage rod at the tip of the gauge rod is brought into contact with the main rope groove and the wear state of the main rope groove is detected and measured using an indicator using the gauge rod and the guide cylinder into which the gauge rod is inserted. ing.

  According to this cited document 1, it is described that it is possible to measure the wear state in the main rope groove of the sheave arranged at a position retracted from the outer periphery of the housing of the hoisting machine.

JP 2002-338157 A

  By the way, as one of the legal inspections of elevators, it is compulsory to measure the state of main rope groove wear of the sheaves for hoisting machines. However, in machine room-less elevators, the hoisting machine is used in the hoistway. If the sheave is on the hoistway wall side, the wear state of the main rope groove of the sheave must be measured in an extremely narrow space, and it is measured easily and accurately. It has been sought from the past.

  According to the above-mentioned Patent Document 1, wear measurement is performed by bringing the tip of the gauge rod into contact with the main rope groove using a gauge rod, but this is insufficient for accurate observation including the degree of wear. Therefore, the ease of measurement work is also required for a method of measuring the wear state of the main rope groove by bringing a few main rope grooves of the sheave and the tip of the gauge rod into contact with each other.

  An object of the present invention is to provide a sheave main grooving wear measuring method capable of easily and accurately measuring the wear state of a main grooving formed on a sheave even in a narrow space and an environment where visual recognition is difficult. .

In order to solve the above problems, the present invention is rotatable to support the sheave to housing, a main rope of the sheave of the hoisting machine wound a main rope to the main rope grooves formed in the sheave A plurality of measuring instrument bases formed at positions corresponding to the number of grooves, each having a through hole into which a measuring axis can be inserted, a rod-shaped measuring instrument main body coupled to the measuring instrument base, and the measuring instrument main body A main grooving wear measurement comprising the measurement shaft having a tip portion that is movable in the axial direction and contacting the main grooving, and a wear degree scale that is quantitatively read from the positional relationship of the measurement shaft with respect to the measuring instrument body. A protective cover fixing portion having an insertion empty portion at an upper portion of the sheave, and a protective cover removing portion disposed so as to be removable from the protective cover fixing portion by closing the insertion empty portion. The measuring instrument base of the main rope groove wear measuring device is provided with the protective cover Disconnect unit inserted using the insertion hollow portion which is exposed after removal of said main sheave main rope groove wear measurement for measuring the wear of the main Sakumizo you be disposed at a position corresponding to the search groove In the method, the hoisting machine includes an electromagnetic brake device that forms a plurality of the main rope grooves in the sheave and stops the sheave from rotating in the casing at an upper portion of the sheave. The insertion empty portion is an insertion empty portion that reaches the side portion and the front side of the electromagnetic brake device, and uses the front side of the electromagnetic brake device among the insertion empty portions that appear after the protective cover removing portion is removed. The measuring instrument base is inserted while the longitudinal direction of the measuring instrument base is positioned substantially in the radial direction of the sheave, and then the measuring instrument main body is rotated along the axial direction of the measuring axis. The parallel arrangement of the plurality of main rope grooves formed on the sheave Corresponding to the main rope groove of the sheave by changing the direction of the measuring instrument base so that the plurality of through holes formed in parallel to each of the main rope grooves are aligned with each other. It is characterized by being arranged at the position .

According to such a sheave main grooving wear measuring method, a part of the existing protective cover can be removed without drastically changing the hoisting machine in accordance with the use of the main grooving wear measuring device. The main grooving wear measuring device can be easily inserted by using the insertion empty portion that appears after removing the protective cover removing portion as the cover removing portion. Thus, even if the hoisting machine is arranged in a narrow part, the degree of wear of the main rope groove can be easily measured using the main rope groove wear measuring device without performing a large dismantling work. In addition, an insertion space formed on the front side of the electromagnetic brake device that can be made relatively large without changing the basic configuration of the hoisting machine so as to form a large space in the side portion of the electromagnetic brake device is used. Thus, the measuring instrument base side can be easily inserted into the lower sheave.

  According to the sheave main grooving wear measuring method of the present invention, the protection capable of removing a part of the existing protective cover without significantly changing the design of the hoist according to the use of the main grooving wear measuring device. The main grooving wear measuring device can be easily inserted by using the insertion empty portion that appears after removing the protective cover removing portion as the cover removing portion. Thus, even if the hoisting machine is arranged in a narrow part, the degree of wear of the main rope groove can be easily measured using the main rope groove wear measuring device without performing a large dismantling work.

It is a schematic block diagram of the elevator which employ | adopts the main rope groove abrasion measuring method by one embodiment of this invention. It is a front view of the winding machine which is the principal part of the elevator shown in FIG. It is a top view of the winding machine shown in FIG. It is the perspective view which expanded the principal part of the winding machine shown in FIG. It is a side view of the main rope groove wear measuring device by one embodiment of the present invention. It is a front view of the main rope groove abrasion measuring apparatus shown in FIG. It is a front view of the measuring instrument stand which is the principal part of the main grooving wear measuring apparatus shown in FIG. It is a top view of the measuring device stand shown in FIG. It is a top view of the main rope groove abrasion measuring apparatus shown in FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic diagram showing an overall arrangement of an elevator apparatus including a hoisting machine to which a main rope groove wear measuring apparatus is applied.

  In the hoistway 1, a fishing car 2 that can be raised and lowered along a pair of guide rails (not shown) and a fishing that is connected to the car 2 by a main rope 3 and can be raised and lowered along a pair of other guide rails (not shown). A counterweight 4 is disposed, and shock absorbers 5 and 6 are disposed in the lower portions of the respective weights. The hoisting machine 7 that winds up the main rope 3 and moves the car 2 up and down is installed in a gap between the hoistway 1 and the car 2, and the detailed configuration thereof will be described later, but is fixed to the car 2 side. A side casing is positioned, and a sheave 8 that is rotatable with respect to the casing is positioned on the hoistway wall side.

  The hoisting machine 7 is surrounded by the wall of the hoistway 1 and is arranged at a narrow position avoiding the installation place of the car 2, the counterweight 4, and the shock absorbers 5 and 6, for example, on the illustrated support column 9 or guide rail. It is fixed. Further, the hoisting machine 7 is wound so that a plurality of main ropes 3 connected between the car 2 and the counterweight 4 are respectively matched with a plurality of main rope grooves formed on the sheave 8. When the main rope 3 is driven by the rotation of the car 8, the car 2 and the counterweight 4 are configured to move up and down in the opposite directions along the respective guide rails.

  2 and 3 are a front view and a plan view of the hoisting machine 7 described above.

  A brake drum 10 is integrally coupled to the outer periphery of the sheave 8 on the side of the car 2, and a casing 11 is disposed on the car drum 3 side of the brake drum 10. The vehicle 8 and the brake drum 10 are supported in a rotatable relationship.

  An outer rotor type motor is formed at a portion where the sheave 8 or the brake drum 10 and the housing 11 are opposed to each other, and a rotor of the outer rotor type motor is formed on an inner peripheral portion of the sheave 8 or the brake drum 10. The stator is configured at the opposing portion of the housing 11. When the outer rotor type motor is energized, the movable part represented by the sheave 8 and the brake drum 10 is integrally rotated. When the energization is interrupted, the movable parts having the same configuration are arranged on the upper and lower parts of the housing 7 respectively. The movable portion is braked by the electromagnetic brake device 12. The configuration for rotationally driving the sheave 8 and the brake drum 10 is not limited to that described above, and other configurations can be employed.

  Furthermore, the principal part of the hoisting machine 7 is demonstrated using FIG. 4 which is a perspective view which shows schematic structure.

  A pair of guide members 13 are fixed to both sides of the upper portion of the housing 11, and hole portions 14 into which the main ropes 3 are inserted are formed in these guide members 13. A protective cover fixing portion 15 and a removable protective cover removing portion 16 are disposed above the sheave 8 in order to prevent dust and the like from entering the sheave 8. The protective cover fixing part 15 includes a holding part 17 that extends to the back side on both sides thereof, a fixing part 18 that extends to the back side at the center, and an insertion space formed between the holding part 17 and the fixing part 18. 19. The protective cover removing portion 16 illustrated in the removed state is formed in a shape that fits into the protective cover fixing portion 15 so as to close the insertion empty portion 19.

  The protective cover fixing portion 15 is fixed to the housing 7 with a bolt 20 or the like directly or via a fixing member located in the vicinity of the both guide members 13 with the holding portion 17 in contact with the lower surfaces of the both guide members 13. Has been. The protective cover removing portion 16 is detachably disposed by fitting to the protective cover fixing portion 15 so as to block the insertion empty portion 19 using the protective cover fixing portion 15, but can be easily removed. It is fixed to the protective cover fixing part 15 by a fixing structure.

  Here, the protective cover attached to prevent the entry of dust and the like from the upper part into the sheave 8 is disassembled into a protective cover fixing part 15 and a removable protective cover removing part 16. When measuring the main flutes in the sheave 8, the insertion space 19 appears by removing the protective cover removal portion 16, and the main flutes measuring device 24, which will be described in detail later, is inserted from this insertion space 19. This is because the main rope groove is measured.

  Since the normal hoisting machine 7 is arranged in the narrow part as shown in FIG. 1, the main rope measuring device 24 for measuring the main rope in the sheave 8 cannot be used easily. . And since the electromagnetic brake device 12 is arrange | positioned at the upper part of the hoisting machine 7, the main groove measuring apparatus 24 which measures the main groove in the sheave 8 cannot be inserted easily. However, in the state where the protective cover removing portion 16 is removed as described above, since the insertion empty portion 19 exists, the electromagnetic brake device 12 disposed on the upper portion of the sheave 8 does not become an obstacle. The main groove measuring device 24 can be inserted from the insertion space 19.

  A sheave cover 21 attached to the protective cover fixing portion 15 is attached to the front side of the sheave 8 as shown in FIG. The sheave cover 21 can be mounted in various configurations. Here, the sheave cover 21 protrudes to the front side of the protective cover fixing portion 15 to form a plurality of engaging protrusions 22. A structure is adopted in which an insertable hole 23 is formed, and after the engagement protrusion 22 is inserted into the hole 23 of the sheave cover 21, the sheave cover 21 is slightly lowered to prevent the engagement protrusion 22 from dropping off at the head. doing.

  Next, the main grooving measuring device 24 that is inserted from the insertion hollow portion 19 and measures the wear state of the main grooving of the sheave 8 will be described.

  5 and 6 are a side view and a front view of the main groove measuring device 24, respectively.

  The main groove wear measuring device 24 is formed in the sheave 8 connected to the measuring table 27 to be positioned by being fitted to the reference surface 25 on the sheave 8 side. Within the measuring instrument main body 28, a rod-shaped measuring instrument main body 28 that is movable in the direction in which the main rope grooves 26 are juxtaposed, a measuring shaft 29 that is inserted in the measuring instrument main body 28 so as to be movable in the axial direction thereof, and A fastening portion 30 used for fixing the axial position of the measuring shaft 29, and the measuring shaft 29 when the axial position of the measuring shaft 29 in the measuring device main body 28 is fixed by the fastening portion 30; A wear degree scale 31 for reading a relative positional relationship with the measuring device main body 28 and a string-like connecting member 32 connecting the measuring shaft 29 to prevent the measuring shaft 29 from dropping from the measuring device main body 28 are provided. ing.

  7 and 8 are a front view and a plan view of the measuring instrument stand 27 described above.

  A plurality of measuring instrument bases 27 are formed at positions corresponding to the number of grooves of the main rope groove 26 of the sheave 8 and the reference surface 33 that is positioned by being engaged with the reference surface 25 of the sheave 8, and each has a measuring shaft. 29, and a fitting portion 35 that is slidable in the direction of installation of the main rope groove while maintaining the state in which the measuring instrument main body 28 is fitted and connected to the upper portion of the measuring instrument base 27.

  FIG. 9 is a plan view of the tightening portion 30 shown in FIG.

  The measuring instrument main body 28 in the vicinity where the tightening portion 30 is provided has a substantially C-shape that surrounds the measuring shaft 29 by forming the slit 36, and the measuring shaft 29 is pushed through the central portion thereof. A push hole 37 is provided. Further, a bolt 39 with a knob 38 is passed between the substantially C-shaped end portions so that the width of the slit 36 can be changed, and a nut 40 which is prevented from rotating to the measuring device main body 28 at the inserted end portion. A retaining ring 41 is inserted into the end of the bolt 39 so as to be screwed so that the bolt 39 does not fall out of the nut 40.

  As shown in the figure, when the knob 38 is turned in the direction of increasing the width of the slit 36, the diameter of the insertion hole 37 is also increased, and the measurement shaft 29 inserted therein can be moved in the axial direction. On the other hand, when the knob 38 is rotated in the reverse direction in the direction of reducing the width of the slit 36, the diameter of the insertion hole 37 is also reduced, and the measurement shaft 29 inserted therein is in a holding state where it cannot move in the axial direction.

  Here, the main rope groove 26 of the sheave 8 includes a tapered portion 42 with which the main rope 3 is engaged and a groove 43 extending from the tapered portion 42 in the direction of the sheave rotation axis as shown in FIG. A distal end portion 44 made of, for example, a spherical body is formed at the distal end of the measurement shaft 29, and the distal end portion 44 is similar to the shape of the main rope 3. Further, a flat portion is formed at the upper end of the measuring instrument main body 28 having the through hole 37, and a portion where the flat portion and the measurement axis 29 coincide can be observed with the wear degree scale 31.

  Next, the operation | work which measures the abrasion of the main rope groove 26 of the sheave 8 using the main rope groove wear measuring apparatus 24 mentioned above is demonstrated.

  As shown in FIGS. 2 and 3, the hoisting machine 7 in a steady state is provided with a protective cover fixing portion 15 and a removable protective cover removing portion 16 for preventing intrusion of dust and the like into the sheave 8. Has been. When measuring the main rope groove in the sheave 8, first, the operator removes the protective cover removing portion 16 as shown in FIG. 4. Then, an insertion space 19 appears between the main rope 3 and the electromagnetic brake device 12 at the upper part of the hoisting machine 7.

  Thereafter, since the work using the main grooving wear measuring device 24 to be performed in the future is performed in the narrow portion, it would be very troublesome if the measuring shaft 29 is dropped from the measuring device main body 28. Therefore, the connection member 32 is entangled with or tied to the main rope 3 in case the measurement shaft 29 is dropped.

  Thereafter, as shown in FIG. 4, the main grooving wear measuring device 24 is inserted from the insertion space 19. The insertion operation at this time is a measuring instrument so that the parallel arrangement direction of the plurality of main rope grooves formed on the sheave 8 and the parallel arrangement direction of the through holes 34 formed to match the respective main rope grooves are matched. The method of aligning the orientation of the platform 27, the parallel direction of the plurality of main rope grooves formed on the sheave 8, and the parallel direction of the through holes 34 formed so as to match the respective main rope grooves are different. As described above, there is a method for performing the measurement with the measuring instrument base 27 facing.

  When the main grooving wear measuring device 24 is inserted by the former method, the measuring instrument base 27 can be installed at a predetermined position of the sheave 8 as it is. However, here, when the main grooving wear measuring device 24 is inserted from the insertion hollow portion 19, the operator performs the latter so that the measuring instrument base 27 is different from the installed state. Due to the structure of the hoisting machine 7, the insertion space 19 is larger in the same direction on the front side (the sheave 8 side) of the electromagnetic brake device 12 than the width between the main rope 3 or the guide member 13 and the electromagnetic brake device 12. It is formed using the fact that it is easy to ensure the width.

  Therefore, as shown in FIG. 4, the measuring stand 27 of the main rope groove measuring device 24 is positioned on the front side of the electromagnetic brake device 12 in the insertion space 19, and the longitudinal direction of the measuring stand 27 is set to the sheave 8. The measuring instrument main body 28 of the main grooving wear measuring device 24 is positioned between the guide member 13 and the electromagnetic brake device 12. At the same time, the measuring instrument main body 28 is slightly tilted, and the top side of the measuring instrument main body 28 is tilted in a direction away from the adjacent electromagnetic brake device 12 to be arranged obliquely. In this state, the measuring instrument base 27 side of the main groove wear measuring device 24 is inserted downward from the insertion hollow portion 19. Then, the measuring instrument base 27 side can be easily inserted into the lower sheave 8 by using the insertion hollow portion 19 formed without changing the basic configuration of the hoisting machine 7 so much.

  After that, when the measuring instrument base 27 of the main grooving wear measuring device 24 is inserted into the inside, the operator turns the measuring instrument main body 28 of the main grooving wear measuring device 24 along the axial direction, and this time the sheave. The direction of the measuring instrument base 27 is aligned so that the juxtaposed direction of the plurality of main rope grooves formed in FIG. 8 and the juxtaposed direction of the through holes 34 formed so as to match the main rope grooves are matched. In other words, the measuring instrument base 27 is oriented in the axial direction so that the longitudinal direction of the measuring instrument base 27 is oriented in the thickness direction of the sheave 8 while the longitudinal direction of the measuring instrument base 27 is oriented substantially in the radial direction of the sheave 8. Rotate approximately 90 degrees.

  After this direction change, the side of the measuring instrument main body 28 in the main rope groove wear measuring device 24 is guided while being in sliding contact. In the vicinity of the measuring instrument main body 28 in the insertion hollow portion 19, there are a holding portion 17 formed extending on the back side on both sides of the central fixing portion 18 in the protective cover fixing portion 15, the guide member 13, and the like. . The side surfaces of the measuring device main body 28 are brought into contact with the end surfaces of the members forming the insertion empty portions 19 and the side portions of the measuring device main body 28 are moved along the guide members 13 or the holding portions 17 so as to keep this contact. The main rope groove wear measuring device 24 is inserted while being in sliding contact. Since the measuring instrument main body 28 is a rod having a square cross section, the orientation of the measuring instrument base 27 can be kept constant by inserting one lateral outer surface into sliding contact with the guide member 13 or the holding portion 17. . Therefore, when the measuring instrument base 27 is brought into contact with the sheave 8, the direction in which the plurality of main rope grooves formed in the sheave 8 are arranged, and the through holes 33 that are formed so as to match the main rope grooves are arranged in parallel. The orientation of the measuring instrument base 27 can be maintained so as to match the direction.

  Here, since the measuring instrument main body 28 in the main rope groove wear measuring device 24 is a bar having a square cross section, it can be inserted while sliding one outer surface on the side to the guide member 13 or the holding portion 17. Since the orientation of the measuring instrument base 27 can be kept constant, workability can be improved. However, since the guide member 13 or the holding portion 17 can also be guided while holding the orientation of the measuring instrument base 27 constant depending on the shape of the sliding contact surface with the measuring instrument main body 28, the sectional shape of the measuring instrument main body 28 is limited. do not do.

  In any case, since the operator can guide the measuring instrument main body 28 along the protective cover fixing part 15, even if the hoisting machine 7 is arranged in a narrow part and is difficult to see or in a dark place, The measuring instrument base 27 of the main rope groove wear measuring device 24 can be easily installed at a position corresponding to the main rope groove of the sheave 8.

  When the measuring instrument base 27 is brought into contact with the sheave 8, the reference surface 25 of the sheave 8 is fitted to the reference surface 33 of the measuring instrument base 27 as described in FIG. Is positioned. Moreover, the reference surface 25 of the sheave 8 made of a magnetic material is magnetically attracted by the magnet 45 provided on the reference surface 33 of the measuring instrument base 27 and the fitting state is maintained. At this time, in the main grooving wear measuring device 24, the measuring shaft 29 is disposed through the insertion hole 37 of the measuring device main body 28 and the through hole 34 of the measuring device base 27, and the tip portion thereof is in the sheave 8. It will be in the state contact | abutted to the taper part 36 of the main rope groove 26. FIG. Then, after confirming the state of the measurement shaft 29, the operator turns the knob 38 of the fastening portion 30 shown in FIG. Become.

  In this fixed state, the operator quantitatively reads the positional relationship of the measuring shaft 29 with respect to the measuring instrument main body 28 using the wear degree scale 31 shown in FIGS. For example, if the wear of the main rope groove 26 is advanced, the measuring shaft 29 is further lowered through the insertion hole 37 of the measuring device main body 28 and the through hole 9 of the measuring device base 27, and this changed measuring device main body 28. The positional relationship of the measurement axis 29 with respect to is newly read from the wear degree scale 29 described above by the operator. The degree of wear of the main rope groove 26 can be quantitatively known by the change in reading on the wear degree scale 29 at this time.

  Subsequently, the degree of wear of the other main rope groove 26 is measured. The measuring instrument base 27 has a length dimension corresponding to the parallel arrangement direction of the plurality of main rope grooves 26 of the net wheel 8, and the number of through holes 34 of the measuring instrument base 27 is equal to the number of main rope grooves 26. Match. Therefore, when measuring the degree of wear of the other main rope groove 26, the operator turns the knob 38 in the reverse direction while keeping the measuring instrument base 27 in the position, and then loosens the measuring shaft 29 once. It is moved upward and extracted from the currently inserted through hole 34. Thereafter, the operator uses the fitting portion 35 shown in FIGS. 7 and 8 to move only the measuring instrument body 28 fitted to the measuring instrument table 27 in the direction in which the main rope grooves 26 are arranged. The position corresponding to the next through hole 34 is set.

  At this time, the measuring instrument main body 28 of the main rope groove wear measuring device 24 is a portion formed between the guide member 13 or the holding portion 17 and the electromagnetic brake device 12 shown in FIG. Is used to move the plurality of main rope grooves 26 formed in the sheave 8 side by side. Since only the measuring instrument main body 28 moves in the insertion empty portion 19 and the relatively large measuring instrument base 27 does not move in the insertion empty portion 19, it is possible to keep the same portion of the insertion empty portion 19 small. it can.

  Thereafter, the operator again inserts the measurement shaft 29 downward and determines the positional relationship with the main rope groove 26, and then fixes the positional relationship of the measurement shaft 29 with respect to the measuring instrument body 28 as in the previous measurement. The wear degree is quantitatively read by the wear degree scale 31 shown in FIGS.

  As described above, once the measuring instrument base 27 is positioned on the sheave 8 by using the fitting of the reference surfaces 25 and 33, it is not necessary to move the measuring instrument base 27. 26 can be easily measured. Moreover, which main rope groove 26 among the plurality of main rope grooves 26 formed in the sheave 8 is measured from the measuring instrument main body 28 that is not inserted into the hoisting machine 7 and its position. Can be ascertained reliably.

  As can be seen from the method of using the main rope groove wear measuring device 24 described above, the insertion empty portion 19 described above appears when the protective cover removing portion 16 is removed, but the guide member 13 or the holding portion 17 and The portions formed between the electromagnetic brake devices 12 have a width and a depth that allow the measuring device main body 28 to move in the juxtaposed direction in the plurality of main rope grooves 26 formed in the sheave 8. On the other hand, the insertion empty part 19 formed in the front part by the side of the sheave 8 in the electromagnetic brake apparatus 12 shall have the width | variety and depth which can take in / out the measuring instrument stand 27. FIG. The shape and size of the protective cover fixing part 15 are determined so that the insertion empty part 19 satisfies such a condition.

  As described above, the method for measuring the sheave main rope groove wear according to the present invention includes a measuring instrument base 27 disposed at a position corresponding to the main rope groove 26 of the sheave 8, and a rod-like shape coupled to the measuring instrument base 27. Quantitatively based on the positional relationship of the measuring shaft 29 with respect to the measuring device main body 28, the measuring shaft 29 that can move in the axial direction in the measuring device main body 28 and that has the tip 44 contacting the main rope groove 26. Using the main groove groove measuring device 24 having the wear degree scale 31 to be read, the protective cover fixing portion 15 having the insertion hollow portion 19 at the upper portion of the sheave 8 rotatably supported on the housing 11, and this A protective cover detaching part 16 which is disposed so as to be detachable from the protective cover fixing part 15 by closing the insertion empty part 19, and uses the insertion empty part 19 which appears after the protective cover removing part 16 is removed. Insert groove wear measuring device 24 And be arranged at a position corresponding to the main ropes groove 26 of the sheave 8.

  According to such a sheave main grooving wear measuring method, a part of the existing protective cover can be removed without significantly changing the design of the hoisting machine 7 in accordance with the use of the main grooving wear measuring device 24. The main grooving wear measuring device 24 can be easily inserted using the insertion space 19 that appears after the protective cover detaching portion 16 is removed. Thus, even if the hoisting machine 7 is arranged in a narrow part, the wear degree of the main rope groove 26 can be easily measured using the main rope groove wear measuring device 24 without performing a large dismantling work.

  The sheave main rope groove wear measuring method of the present invention inserts the measuring stand 27 of the main rope groove wear measuring device 24 by using the insertion hollow portion 19 that appears after removing the protective cover removing portion 16. The outer peripheral portion of the measuring instrument main body 28 of the main grooving wear measuring device 24 is guided while being slidably brought into contact with a peripheral fixing member forming the insertion hollow portion 19, for example, the guide member 13 or the holding portion 17. I have to.

  According to such a sheave main grooving wear measuring method, even if the hoisting machine 7 is in a narrow and dark position and the main grooving 26 of the sheave 8 cannot be easily seen, the main grooving wear measuring device 24 The measuring instrument base 27 can be easily guided so as to be surely arranged at a position corresponding to the main rope groove 26 of the sheave 8.

  Further, in the method for measuring wear of a sheave main rope groove according to the present invention, the electromagnetic brake device 12 for the sheave 8 is disposed above the sheave 8 that is rotatably supported by the housing 11, and The protective cover fixing part 15 having the insertion empty part 19 extending to the side part and the front side of the electromagnetic brake device 12 is disposed in the part, and the insertion empty part 19 is closed so as to be removable from the protective cover fixing part 15. A protective cover removing part 16 is provided, and the longitudinal direction of the measuring instrument base 27 is set to the sheave 8 by using the front side of the electromagnetic brake device 12 in the insertion empty part 19 that appears after removing the protective cover removing part 16. The measuring device base 27 of the main grooving wear measuring device 24 is inserted while being positioned substantially in the radial direction, and then the measuring device main body 28 is rotated along the axial direction. The parallel direction of the main flutes and the main flutes And be arranged at a position corresponding to the main ropes groove 26 of the sheave 8 changes the direction of the instrument table 27 so as to match the arrangement direction of the through hole 34 formed in agreement Re respectively.

  According to such a sheave main rope groove wear measuring method, an electromagnetic wave that can be made relatively large without changing the basic configuration of the hoisting machine 7 so as to form a large space in the side portion of the electromagnetic brake device 12. The measuring instrument base 27 side can be easily inserted into the lower sheave 8 by using the insertion space 19 formed on the front side of the brake device 12.

DESCRIPTION OF SYMBOLS 3 Main rope 7 Hoisting machine 8 Sheave 11 Housing 12 Electromagnetic brake device 13 Guide member 15 Protection cover fixing part 16 Protection cover removal part 25 Reference surface 26 Main rope groove 27 Measuring instrument base 28 Measuring instrument body 29 Measuring shaft 31 Wear degree Scale 33 Reference plane

Claims (2)

Rotatable manner and supports the sheave to housing, a plurality of formed at positions corresponding to the number of grooves of the main rope groove of the sheave of the hoisting machine wound a main rope to the main rope grooves formed in the sheave A measuring instrument base having a through-hole into which each measuring axis can be inserted, a rod-shaped measuring instrument main body coupled to the measuring instrument base, and movable in the axial direction within the measuring instrument main body to contact the main rope groove use said measuring shaft having a tip portion for the main rope groove wear measurement device having a wear degree scale reading in quantitative from the positional relationship of the measurement axis relative to the measuring device main body,
Provided at the upper part of the sheave is a protective cover fixing part having an insertion empty part, and a protective cover removing part disposed so as to be removable from the protective cover fixing part by closing the insertion empty part,
The measuring instrument base of the main rope groove wear measuring device is inserted using the insertion space that appears after removing the protective cover removing portion, and is arranged at a position corresponding to the main rope groove. In the sheave main rope groove wear measuring method for measuring the wear degree of the main rope groove,
The hoisting machine has an electromagnetic brake device that forms a plurality of main rope grooves in the sheave and stops the rotation of the sheave on the casing above the sheave. Is an insertion space extending to the side and front side of the electromagnetic brake device, and using the front side of the electromagnetic brake device among the insertion space that appears after removing the protective cover removal portion, The measuring instrument base is inserted while the longitudinal direction of the measuring instrument base is positioned substantially in the radial direction of the sheave, and then the measuring instrument main body is rotated along the axial direction of the measuring shaft to The measuring instrument base is arranged so that the juxtaposed direction of the plurality of main rope grooves formed in the vehicle and the juxtaposed direction of the plurality of through holes formed at positions corresponding to the main rope grooves are matched. Change the direction and place it at the position corresponding to the main ropeway of the sheave Sheave main rope groove wear measurement how to characterized in that as. Said inserting empty portion guided while sliding the outer peripheral portion of the instrument body on the end surface of the fixed member that has a form and the instrument platform to insert to a position corresponding to the main rope groove The method for measuring wear of a sheave main rope groove according to claim 1.

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