WO2019225613A1 - Poulie d'ascenseur et procédé de fabrication associé - Google Patents

Poulie d'ascenseur et procédé de fabrication associé Download PDF

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Publication number
WO2019225613A1
WO2019225613A1 PCT/JP2019/020143 JP2019020143W WO2019225613A1 WO 2019225613 A1 WO2019225613 A1 WO 2019225613A1 JP 2019020143 W JP2019020143 W JP 2019020143W WO 2019225613 A1 WO2019225613 A1 WO 2019225613A1
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WO
WIPO (PCT)
Prior art keywords
metal layer
sheave
wall surface
elevator
winding groove
Prior art date
Application number
PCT/JP2019/020143
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English (en)
Japanese (ja)
Inventor
田中　啓祐
Original Assignee
三菱電機株式会社
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Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2020521257A priority Critical patent/JP6949212B2/ja
Publication of WO2019225613A1 publication Critical patent/WO2019225613A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04—Driving gear ; Details thereof, e.g. seals
    • B66B11/08—Driving gear ; Details thereof, e.g. seals with hoisting rope or cable operated by frictional engagement with a winding drum or sheave

Definitions

  • the present invention relates to an elevator sheave on which a suspended body is wound and a manufacturing method thereof.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide an elevator sheave that can reduce wear generated in a winding groove and a method for manufacturing the same. is there.
  • An elevator sheave according to the present invention is provided on a cylindrical sheave main body in which a winding groove extending in the circumferential direction is formed on an outer peripheral surface, and a suspension body is fitted in the winding groove, and an inner wall surface of the winding groove.
  • the metal layer is in contact with the suspended body, and the hardness of the metal layer is higher than the hardness of the sheave body.
  • a metal layer having a hardness higher than the hardness of the sheave body is provided on the inner wall surface of the winding groove of the sheave body.
  • FIG. 1 It is a block diagram which shows the elevator apparatus provided with the elevator sheave which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the elevator hoisting machine of FIG. It is an enlarged view which shows the principal part of the sheave for elevators of FIG. It is a figure which shows the manufacturing method of the sheave for elevators of FIG. It is a flowchart which shows the manufacturing method of the sheave for elevators of FIG. It is sectional drawing which shows the principal part of the elevator sheave which concerns on Embodiment 2 of this invention. It is sectional drawing which shows the principal part of the elevator sheave which concerns on Embodiment 3 of this invention.
  • FIG. 1 is a configuration diagram illustrating an elevator apparatus including an elevator sheave according to Embodiment 1 of the present invention.
  • the elevator apparatus is provided in the hoistway 1, provided in the hoistway 1, a car room 2 in which people and cargo are placed, a wire rope 3 that is a suspended body with one end connected to the car room 2, and A counterweight 4 connected to the other end of the wire rope 3 is provided. Further, the elevator apparatus is provided in the hoistway 1 and guides a car room 2 (not shown) that guides the car room 2 in the vertical direction, and is provided in the hoistway 1 and the counterweight (not shown) that guides the counterweight 4 in the vertical direction. Guide rails. As the wire rope 3 moves, the car room 2 and the counterweight 4 move up and down the hoistway 1 in opposite directions.
  • the elevator apparatus is provided in the machine room 5 and includes an elevator hoisting machine 6 that raises and lowers the car room 2 and the counterweight 4, and a plurality of pulleys 7 provided in the machine room 5.
  • the wire rope 3 is wound around an elevator hoist 6 and a pulley 7. When the elevator hoisting machine 6 is driven, the wire rope 3 moves.
  • the plurality of pulleys 7 keep the frictional force generated between the elevator hoist 6 and the wire rope 3 in an appropriate state.
  • the present invention is mainly related to the elevator hoisting machine 6. Therefore, description of other general components included in the elevator apparatus is omitted.
  • the elevator device raises and lowers people and cargo in the height direction.
  • Examples of the energy used for the elevator apparatus include electric energy and hydraulic energy.
  • electrical energy is used in the elevator apparatus.
  • a motor is used as a drive device for the elevator apparatus. The motor converts the electrical energy of the three-phase AC power source into rotational kinetic energy using an electromagnetic coil.
  • Rotational kinetic energy of the motor is used to move the wire rope 3 by the frictional force generated between the elevator hoist 6 and the wire rope 3. As the wire rope 3 moves, the car room 2 and the counterweight 4 move up and down the hoistway 1. In other words, the rotational kinetic energy of the motor is used for raising and lowering the cab 2 and the counterweight 4.
  • the machine room 5 is arrange
  • the car room 2 is configured such that the user's hands and feet do not easily come out of the car room 2 from the inside of the car room 2.
  • steel materials are used from the viewpoint of mechanical strength and the viewpoint of fire fighting.
  • the suspended body is not limited to the wire rope 3 and may be a belt, for example.
  • a frictional force is generated between the elevator hoist 6 and the wire rope 3. Therefore, a portion of the elevator hoist 6 on which the wire rope 3 is wound needs to have the same hardness and strength as the wire rope 3.
  • a portion around the wire rope 3 in the elevator hoisting machine 6 is made of a steel material, an iron-based alloy material, or the like.
  • the portion of the pulley 7 on which the wire rope 3 is hung is made of a steel material, an iron-based alloy material, or the like, similarly to the portion of the elevator hoisting machine 6 on which the wire rope 3 is hung.
  • FIG. 2 is a cross-sectional view showing the elevator hoisting machine 6 of FIG.
  • the elevator hoisting machine 6 includes an elevator sheave 61 around which the wire rope 3 is wound, a motor 62 that rotates the elevator sheave 61, and a housing 63 that supports the motor 62.
  • the elevator hoisting machine 6 is divided into two parts: a rotating rotor side part and a stator side part fixed to the hoistway 1.
  • the stator side portion includes the permanent magnets of the housing 63 and the motor 62.
  • the rotor side portion includes the elevator sheave 61 and the electromagnetic coil of the motor 62.
  • Current is supplied to the electromagnetic coil of the motor 62 from the stator side portion.
  • the electromagnetic coil of the motor 62 generates a magnetic force using the supplied current. Thereby, the electromagnetic coil of the motor 62 converts electrical energy into rotational kinetic energy.
  • the elevator sheave 61 includes a cylindrical sheave main body 611 that serves as a center of rotational movement.
  • a plurality of winding grooves 612 extending in the circumferential direction of the sheave body 611 are formed on the outer peripheral surface of the sheave body 611.
  • the plurality of winding grooves 612 are arranged side by side in the axial direction of the sheave main body 611.
  • the wire rope 3 is fitted in the winding groove 612. By fitting the wire rope 3 in the winding groove 612, the wire rope 3 is always wound around the sheave main body 611 at the same position. In other words, the movement of the wire rope 3 in the axial direction of the sheave body 611 with respect to the sheave body 611 is restricted.
  • the housing 63 and the sheave body 611 are manufactured by a gravity casting method.
  • the gravity casting method is a method in which a molten iron-based alloy is poured into a sand mold formed using a wooden mold as a master, and the same shape as the master is manufactured.
  • Each shape of the housing 63 and the sheave main body 611 is a complicated shape. Therefore, it is not economical to cut out the housing 63 and the sheave main body 611 from a lump of steel material called billet.
  • a gravity casting method with excellent productivity is used for manufacturing the housing 63 and the sheave main body 611.
  • a portion of the sheave body 611 that does not require wear resistance when a high-hardness metal that is applicable to the gravity casting method and has improved wear resistance is used as the material of the sheave body 611 Is also composed of a high hardness metal. As a result, the material cost of the sheave main body 611 increases.
  • a cutting machining process of the sheave body 611 is performed as a finishing process of the sheave body 611.
  • the winding groove 612 of the sheave body 611 is finished, and the portion connected to the motor and the portion connected to other parts in the sheave body 611 are finished.
  • the productivity of the sheave main body 611 decreases.
  • the whole sheave main body 611 is comprised from the high hardness metal, the tool used for cutting is consumed earlier, and the lifetime of a tool becomes shorter. As a result, the cost of the tool used for cutting the sheave body 611 increases.
  • the material of the housing 63 and the sheave body 611 is made of cast steel. Thereby, the economical efficiency and productivity of the elevator sheave 61 can be improved.
  • FIG. 3 is an enlarged view showing a main part of the elevator sheave 61 of FIG. In FIG. 3, the cross section about the radial direction in the sheave 61 for elevators is shown.
  • the elevator sheave 61 further includes a metal layer 614 provided on the inner wall surface 613 of the winding groove 612.
  • the metal layer 614 is provided on the side surface portion of the inner wall surface 613 of the winding groove 612.
  • the metal layer 614 is in contact with the wire rope 3 fitted in the winding groove 612.
  • the surface in contact with the wire rope 3 in the metal layer 614 becomes the contact surface 615 of the elevator sheave 61.
  • a frictional force is generated between the contact surface 615 and the wire rope 3.
  • the metal layer 614 is provided on the inner wall surface 613 of the winding groove 612.
  • the hardness of the metal layer 614 is higher than the hardness of the sheave body 611. Thereby, the abrasion resistance of the elevator sheave 61 can be improved.
  • FIG. 4 is a diagram showing a method of manufacturing the elevator sheave 61 of FIG.
  • an LMD (Laser Metal Deposition) method is used as a method of forming the metal layer 614 on the inner wall surface 613 of the winding groove 612.
  • the laser device 8 irradiates a base material to be processed, that is, an inner wall surface 613 of the winding groove 612, with a laser beam having a wavelength of about 1000 nm and an extremely high energy density.
  • the portion irradiated with the laser beam on the inner wall surface 613 of the winding groove 612 is instantaneously melted by the laser beam.
  • a welding material such as metal powder and metal wire compatible with the inner wall surface 613 of the winding groove 612 is supplied from the supply device 9 to the molten pool on the inner wall surface 613 of the winding groove 612. As a result, the weld bead is placed on the inner wall surface 613 of the winding groove 612.
  • a high-pressure inert gas is injected into the portion of the inner wall surface 613 of the winding groove 612 that is irradiated with the laser beam.
  • the inert gas include argon.
  • the sheave body 611 and the supply device 9 are stored in a chamber (not shown), and the chamber is filled with an inert gas. Thereby, the flow of the inert gas that suppresses the oxidation reaction of the weld bead and the flow of the powdered metal are prevented from colliding with each other.
  • the weld bead formed per laser pass has a width dimension of about 1 mm to 3 mm and a height dimension of about 1 mm.
  • a fiber laser device having a wavelength of about 1000 nm is used as the laser device.
  • the width dimension of the weld bead can be expanded to about several tens of millimeters.
  • the wire rope 3 cannot come into surface contact with the high-hardness metal layer 614 formed by the LMD method. Therefore, after the metal layer 614 with high hardness is formed by the LMD method, it is necessary to finish the surface of the metal layer 614 with high hardness by cutting machining. By cutting machining, the undulation of the high-hardness metal layer 614 is reduced, and the surface roughness of the high-hardness metal layer 614 is reduced.
  • FIG. 5 is a flowchart showing a method of manufacturing the elevator sheave 61 of FIG.
  • step S101 a gravity casting process is performed.
  • the sheave body 611 is formed by a gravity casting method.
  • a sheave main body finishing process is performed in step S102.
  • cutting machining of the inner wall surface 613 of the winding groove 612 is performed.
  • the sheave body forming process is composed of the gravity casting process and the sheave body finishing process.
  • a metal layer forming process is performed in step S103.
  • the metal layer 614 is formed on the inner wall surface 613 of the winding groove 612 by the LMD method.
  • a metal layer finishing process is performed in step S104.
  • cutting machining of the contact surface 615 in the metal layer 614 is performed.
  • the manufacturing procedure of the elevator sheave 61 is thus completed.
  • the inner wall surface 613 of the winding groove 612 of the sheave body 611 has a hardness higher than the hardness of the sheave body 611.
  • the metal layer 614 is provided. Thereby, the abrasion which generate
  • the frequency of reworking the winding grooves 612 in the maintenance of the elevator apparatus can be reduced. As a result, it is possible to reduce the stop time of the elevator apparatus due to maintenance.
  • the inner wall surface 613 of the groove of the sheave body 611 has a higher hardness than the sheave body 611 in the metal layer forming step.
  • a high hardness metal layer 614 is provided. Thereby, the abrasion which generate
  • the metal layer 614 is formed by the Laser Metal Deposition method in the metal layer forming step. Thereby, the metal layer 614 can be easily formed on the inner wall surface 613 of the winding groove 612.
  • the manufacturing method of the elevator sheave 61 further includes a metal layer finishing step of cutting the surface of the metal layer 614 after the metal layer forming step. Thereby, the contact surface 615 of the metal layer 614 and the wire rope 3 can be more reliably brought into surface contact.
  • FIG. FIG. 6 is a cross-sectional view showing a main part of an elevator sheave according to Embodiment 2 of the present invention.
  • the metal layer 614 of the elevator sheave 61 according to the second embodiment includes a metal layer body 616 that serves as a welding material for the inner wall surface 613 of the winding groove 612, and a plurality of wear-resistant layers provided inside the metal layer body 616. Particles 617.
  • the metal layer 614 is a metal composite structure.
  • the metal layer body 616 is made of a metal that is compatible with the sheave body 611 when a weld bead is formed in the LMD method.
  • the metal layer body 616 is made of a metal having the same composition as the sheave body 611.
  • the metal layer body 616 is made of a metal having a linear expansion coefficient similar to that of the sheave body 611.
  • the hardness of the wear resistant particles 617 is higher than the hardness of the sheave body 611. Thereby, the hardness of the metal layer 614 becomes higher than the hardness of the sheave body 611.
  • a weld bead is formed in the LMD method, powdered wear-resistant particles 617 are supplied. Further, when a weld bead is formed in the LMD method, a multilayered weld bead is formed.
  • the density of the wear-resistant particles 617 in the metal layer 614 is uniform in the thickness direction of the metal layer 614. Other configurations are the same as those in the first embodiment.
  • a metal having high hardness is used as a welding material for the inner wall surface 613 of the winding groove 612. Therefore, in Embodiment 1, there are limitations on the type of metal used and the function of the metal.
  • a metal that is compatible with the sheave body 611 is used as the metal layer body 616, and metal particles that are not compatible with the sheave body 611 are used as the wear-resistant particles 617. . Thereby, the further wear resistance improvement of the elevator sheave 61 can be aimed at.
  • the metal layer 614 includes the metal layer body 616 that serves as a welding material for the inner wall surface 613 of the winding groove 612, and the metal layer.
  • a plurality of wear-resistant particles 617 having a hardness higher than that of the sheave main body 611 are provided inside the main body 616.
  • the density of the wear-resistant particles 617 is uniform. Thereby, even if it is a case where abrasion generate
  • metal layer body 616 that serves as a welding material for inner wall surface 613 of winding groove 612, and metal layer A metal layer 614 provided inside the main body 616 and having a plurality of wear-resistant particles 617 having a hardness higher than that of the sheave main body 611 is formed.
  • the further wear resistance improvement of the elevator sheave 61 can be aimed at.
  • the density of the wear-resistant particles 617 is made uniform in the metal layer forming step. Therefore, even if it is a case where abrasion generate
  • FIG. FIG. 7 is a cross-sectional view showing the main parts of an elevator sheave according to Embodiment 3 of the present invention.
  • the density of the wear-resistant particles 617 increases from the inner wall surface 613 of the winding groove 612 toward the contact surface 615 that contacts the wire rope 3 in the metal layer 614.
  • the amount of the high-hardness wear-resistant particles 617 is gradually increased as the distance from the inner wall surface 613 of the winding groove 612 increases. Thereby, the amount of the wear-resistant particles 617 in the portion close to the inner wall surface 613 of the winding groove 612 in the metal layer 614 can be reduced.
  • Other configurations are the same as those of the second embodiment.
  • the density of the wear-resistant particles 617 is in contact with the wire rope 3 in the metal layer 614 from the inner wall surface 613 of the winding groove 612. It becomes higher as it goes to the contact surface 615. As a result, the wear resistance of the metal layer 614 can be maintained, and the amount of wear-resistant particles 617 contained in the metal layer 614 can be reduced.
  • the density of the wear-resistant particles 617 is changed from the inner wall surface 613 of the winding groove 612 to the metal layer 614.
  • the height is increased toward the contact surface 615 in contact with the wire rope 3. Thereby, the amount of the wear-resistant particles 617 included in the metal layer 614 can be reduced.
  • FIG. FIG. 8 is a cross-sectional view showing a main part of an elevator sheave according to Embodiment 4 of the present invention.
  • the metal layer 614 includes a first weld metal and a second weld metal having a hardness higher than that of the sheave body 611.
  • the first weld metal is made of a metal that is compatible with the sheave body 611 when a weld bead is formed in the LMD method.
  • the first weld metal is made of a metal having the same composition as that of the sheave main body 611. Further, the first weld metal is made of a metal having a linear expansion coefficient similar to that of the sheave body 611.
  • the second weld metal is made of a metal that is compatible with the first weld metal when the weld bead is formed in the LMD method.
  • the second weld metal has a hardness higher than that of the first weld metal.
  • the ratio of the second weld metal to the first weld metal in the metal layer 614 increases from the inner wall surface 613 of the winding groove 612 toward the contact surface 615 in contact with the wire rope 3 in the metal layer 614.
  • the function of improving wear resistance is performed by the second weld metal, and the first weld metal serves as a buffer layer between the inner wall surface 613 of the winding groove 612 and the second weld metal. It is possible to suppress the occurrence of defects that are weld cracks when forming the weld bead. Other configurations are the same as those of the second embodiment.
  • the ratio of the second weld metal to the first weld metal in the metal layer 614 is determined from the inner wall surface 613 of the winding groove 612. It becomes high as it goes to the contact surface 615 in contact with the wire rope 3 in the metal layer 614. Thereby, generation
  • the ratio of the second weld metal to the first weld metal in metal layer 614 is the winding groove 612.
  • the height is increased from the inner wall surface 613 toward the contact surface 615 in contact with the wire rope 3 in the metal layer 614.
  • FIG. FIG. 9 is a cross-sectional view showing the main parts of an elevator sheave according to Embodiment 5 of the present invention.
  • the metal layer 614 includes a first weld metal layer piece 618 made of the first weld metal and a second weld metal layer piece 619 made of the second weld metal. And has.
  • the first weld metal layer piece 618 is disposed so as to overlap the inner wall surface 613 of the winding groove 612.
  • the second weld metal layer piece 619 is disposed so as to overlap the first weld metal layer piece 618.
  • the hardness of the second weld metal layer piece 619 is higher than the hardness of the first weld metal layer piece 618. In addition, the hardness of the second weld metal layer piece 619 is higher than the hardness of the sheave body 611. In the LMD method, the second weld metal layer piece 619 is formed after the first weld metal layer piece 618 is formed. Other configurations are the same as those in the fourth embodiment.
  • the metal layer 614 is provided so as to overlap the inner wall surface 613 of the winding groove 612 and is composed of the first weld metal.
  • the first weld metal layer piece 618 composed of the first weld metal is formed in the winding groove 612.
  • a second weld metal layer piece 619 formed to overlap the inner wall surface 613 and made of the second weld metal is formed to overlap the first weld metal layer piece 618.
  • FIG. FIG. 10 is a sectional view showing an essential part of an elevator sheave according to Embodiment 6 of the present invention.
  • irregularities 620 are formed on the inner wall surface 613 of the winding groove 612.
  • the amplitude of the unevenness 620 is about 1 mm to 5 mm.
  • the unevenness 620 is formed in the gravity casting process. Specifically, unevenness is formed in a portion corresponding to the unevenness 620 on the surface of the mold on which the sheave main body 611 is formed, and the unevenness 620 is formed simultaneously with the formation of the sheave main body 611 using this mold. .
  • the unevenness 620 may be formed in the cutting machining process after the gravity casting process. In other words, the unevenness 620 is formed in the sheave body forming process.
  • the metal layer 614 is formed on the unevenness 620 of the inner wall surface 613 of the winding groove 612 using the LMD method in the metal layer forming step.
  • the hardness of the metal layer 614 is higher than the hardness of the sheave body 611.
  • the linear expansion coefficient of the metal layer 614 is different from the linear expansion coefficient of the sheave body 611.
  • Other configurations are the same as those in the first embodiment.
  • Other configurations may be the same as those in any of the second to fifth embodiments.
  • the unevenness 620 is formed on the inner wall surface 613 of the winding groove 612.
  • the metal layer 614 is formed in the LMD method, the occurrence of cracks in the metal layer 614 due to thermal stress is suppressed.
  • the metal layer is caused by the thermal strain generated between the metal layer 614 and the sheave body 611. The occurrence of breakage in 614 is suppressed, and the metal layer 614 is suppressed from peeling from the sheave body 611.
  • the unevenness 620 is formed on the inner wall surface 613 of the winding groove 612 in the sheave main body forming step.
  • FIG. FIG. 11 is a cross-sectional view showing the main parts of an elevator sheave according to Embodiment 7 of the present invention.
  • the metal layer 614 includes the buffer metal layer piece 621 made of the same metal as the first weld metal of the fifth embodiment and the second weld of the fifth embodiment. And a weld metal layer piece 622 made of the same metal as the metal.
  • the buffer metal layer piece 621 is disposed so as to overlap the inner wall surface 613 of the winding groove 612.
  • the weld metal layer piece 622 is disposed so as to overlap the buffer metal layer piece 621.
  • the hardness of the weld metal layer piece 622 is higher than the hardness of the buffer metal layer piece 621. Moreover, the hardness of the weld metal layer piece 622 is higher than the hardness of the sheave body 611. Other configurations are the same as those of the fifth embodiment. As in the sixth embodiment, the unevenness 620 may be formed on the inner wall surface 613 of the winding groove 612.
  • FIG. 12 is a cross-sectional view showing a mold on which the sheave body 611 and the buffer metal layer piece 621 of FIG. 11 are formed.
  • FIG. 13 is a cross-sectional view showing a sheave body 611 and a buffer metal layer piece 621 manufactured by the mold of FIG.
  • the buffer metal layer piece 621 is installed in a region where the buffer metal layer piece 621 is formed in the mold 10 on which the sheave body 611 and the buffer metal layer piece 621 are formed. Thereafter, the molten alloy is poured into the mold 10.
  • the buffer metal layer piece 621 is formed at the same time as the sheave main body 611 is formed. Thereafter, the weld metal layer piece 622 is formed on the buffer metal layer piece 621 by the LMD method.
  • the metal layer forming step includes a buffer metal layer piece forming step in which the buffer metal layer piece 621 is formed simultaneously with the sheave body 611, and a welding in which the weld metal layer piece 622 is formed after the buffer metal layer piece forming step. A metal layer piece forming step.
  • the metal layer 614 is provided so as to overlap the inner wall surface 613 and is made of the same metal as the first weld metal. It has a buffer metal layer piece 621 and a weld metal layer piece 622 that is provided so as to overlap the buffer metal layer piece 621 and is made of the same metal as the second weld metal. Thereby, when the weld metal layer piece 622 is formed in the LMD method, the weld metal layer piece 622 is prevented from being cracked by thermal stress.
  • the elevator sheave 61 when used and a temperature change occurs in the elevator sheave 61, it is caused by thermal strain generated between the weld metal layer piece 622 and the buffer metal layer piece 621. The occurrence of breakage in the weld metal layer piece 622 is suppressed, and the weld metal layer piece 622 is prevented from peeling from the buffer metal layer piece 621.
  • the buffer metal layer piece 621 overlaps the inner wall surface 613 of the winding groove 612 at the same time as the sheave main body 611 is formed.
  • the weld metal layer piece 622 is formed so as to overlap the buffer metal layer piece 621. Therefore, when the weld metal layer piece 622 is formed in the LMD method, the weld metal layer piece 622 is prevented from being cracked by thermal stress. Further, when the elevator sheave 61 is used and a temperature change occurs in the elevator sheave 61, it is caused by thermal strain generated between the weld metal layer piece 622 and the buffer metal layer piece 621. The occurrence of breakage in the weld metal layer piece 622 is suppressed, and the weld metal layer piece 622 is prevented from peeling from the buffer metal layer piece 621.
  • FIG. 14 is a sectional view showing a main part of an elevator sheave according to the eighth embodiment of the present invention.
  • the sheave body 611 includes an inner wall surface portion 623 in which the inner wall surface 613 of the winding groove 612 is formed, and a sheave formed integrally with the inner wall surface portion 623.
  • the sheave main body inner portion 624 is disposed on the inner side in the radial direction of the sheave main body 611 than the inner wall surface portion 623.
  • the inner wall surface portion 623 is composed of a material constituting the sheave main body inner portion 624 and a buffer metal that is compatible with the material and is the same metal as the first weld metal of the fifth embodiment. Yes.
  • the inner wall surface portion 623 is modified with respect to the sheave main body inner portion 624.
  • Metal layer 614 is made of the same metal as the second weld metal of the fifth embodiment.
  • FIG. 15 is a cross-sectional view showing a mold on which the sheave body 611 of FIG. 14 is formed.
  • FIG. 16 is a cross-sectional view showing a sheave body 611 manufactured by the mold of FIG. A part of the surface of the mold 10 on which the cast sheave main body 611 is formed is manufactured by metal three-dimensional modeling such as powder DED (Direct Energy Deposition), wire DED or the like.
  • a powdered buffer metal 625 is installed in a region of the mold 10 where the sheave body 611 is formed. Thereafter, the molten alloy is poured into the mold 10. Thereby, the inner wall surface part 623 in the sheave main body 611 becomes a reforming region. Thereafter, the metal layer 614 is formed by the LMD method.
  • Other configurations are the same as those of the seventh embodiment.
  • the sheave body 611 includes the inner wall surface portion 623 in which the inner wall surface 613 of the winding groove 612 is formed, and the inner wall surface.
  • a sheave body inner portion 624 formed integrally with the portion 623 is included.
  • the inner wall surface portion 623 is made of a material constituting the sheave main body inner portion 624 and a metal compatible with the material.
  • the metal layer is caused by the thermal strain generated between the metal layer 614 and the sheave body 611.
  • the occurrence of breakage in 614 is suppressed, and the metal layer 614 is suppressed from peeling from the sheave body 611.
  • the inner wall surface portion 623 and the sheave body inner portion 624 are formed in the sheave body forming step.
  • the inner wall surface portion 623 is made of a material constituting the sheave main body inner portion 624 and a metal compatible with the material.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Pulleys (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Abstract

L'invention concerne une poulie d'ascenseur apte à réduire l'abrasion générée dans une rainure d'enroulement. Selon l'invention, une poulie d'ascenseur (61) sur laquelle est enroulé un câble métallique (3) comprend : un corps de poulie cylindrique (611) comportant, sur sa surface circonférentielle externe, une rainure d'enroulement (612) formée de sorte à s'étendre dans le sens de la circonférence et dans laquelle est ajusté le câble métallique (3) ; et une couche métallique (614) disposée sur la surface de paroi interne (613) de la rainure d'enroulement (612) et amenée en contact avec le câble métallique (3), la dureté de la couche métallique (614) étant supérieure à celle du corps de poulie (611).
PCT/JP2019/020143 2018-05-21 2019-05-21 Poulie d'ascenseur et procédé de fabrication associé WO2019225613A1 (fr)

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JP2020521257A JP6949212B2 (ja) 2018-05-21 2019-05-21 エレベータ用綱車およびその製造方法

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JP2018097044 2018-05-21
JP2018-097044 2018-05-21

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WO2019225613A1 true WO2019225613A1 (fr) 2019-11-28

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008069000A (ja) * 2006-09-15 2008-03-27 Toshiba Elevator Co Ltd エレベータ装置
JP2009161335A (ja) * 2008-01-09 2009-07-23 Hitachi Ltd エレベーター用シーブ
WO2009147749A1 (fr) * 2008-06-06 2009-12-10 三菱電機株式会社 Dispositif élévateur
JP2011042424A (ja) * 2009-08-19 2011-03-03 Mitsubishi Electric Corp エレベータ巻上機シーブ
JP2011148609A (ja) * 2010-01-22 2011-08-04 Hitachi Ltd エレベーターのロープ巻き掛け方法、及び部材
JP2012513355A (ja) * 2008-12-23 2012-06-14 オーチス エレベータ カンパニー 金属ロープとシーブの接触部における摩耗および摩擦の制御

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JP2008069000A (ja) * 2006-09-15 2008-03-27 Toshiba Elevator Co Ltd エレベータ装置
JP2009161335A (ja) * 2008-01-09 2009-07-23 Hitachi Ltd エレベーター用シーブ
WO2009147749A1 (fr) * 2008-06-06 2009-12-10 三菱電機株式会社 Dispositif élévateur
JP2012513355A (ja) * 2008-12-23 2012-06-14 オーチス エレベータ カンパニー 金属ロープとシーブの接触部における摩耗および摩擦の制御
JP2011042424A (ja) * 2009-08-19 2011-03-03 Mitsubishi Electric Corp エレベータ巻上機シーブ
JP2011148609A (ja) * 2010-01-22 2011-08-04 Hitachi Ltd エレベーターのロープ巻き掛け方法、及び部材

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