JP2010024039A - Elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator allowing for oiling a rope from its main sheave itself and efficiently oiling a rope peripheral surface on the side where the rope and the main sheave make contact with each other. <P>SOLUTION: This elevator is equipped with a winding machine having an output shaft, the main sheave 5 axially supported on this output shaft and the rope wound around the main sheave 5 to connect a car and a counter weight. The main sheave 5 is provided with a sheave body on an outer peripheral part of which a sheave groove 19 with which the rope is engaged is formed, hollow parts 7, 8 provided in the inside of this sheave body and free to fill with oil and an oil filler port 20 provided on a bottom part of the sheave groove 19 and communicated to the hollow parts 7. A part where the sheave groove 19 and the rope make contact with each other is oiled through this oil filler port 20. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an elevator.

  When a steel main rope is used for an elevator, lubrication is required for the purpose of protecting the rope itself (rust prevention) and protecting the sheave (preventing abrasion damage). For example, in the case of a fiber core type rope, oil can be supplied by oozing out from the core to the rope surface during use. For example, in the case of an IWRC (Independent Wire Rope Core) rope, it is impossible to supply oil from the rope itself because of the structure. Therefore, a dedicated oil supply device is separately installed, and oil supply is performed using this device.

The conventional technology related to the oil feeder includes a base having a notch, an oil tank having an opening on one side, a cover provided so as to cover a part of the opening of the oil tank, and a felt for supplying oil to the rope. A rope oil feeder having a felt support portion that supports a felt on an oil tank and an adjuster bolt that is fixed to an end of a base and is provided so as to come into contact with the outer wall of the oil tank is known (Patent Document 1). reference).
JP 2006-21873 A

  However, since the strength of the fiber core rope is lower than that of the IWRC rope, there is a limit to the application of the fiber core rope. If a separate dedicated oiling device is installed in the elevator, the cost increases. Depending on the model, there is no room for installation space, making maintenance difficult. Of the peripheral surfaces of the rope, the surface that requires the most oil supply is the surface on the side where the rope contacts the main sheave. From the viewpoint of preventing wear of the main sheave due to the installation location, there is a problem that it is difficult to efficiently lubricate the surface that needs to be most lubricated.

  In the above-described prior art, since the installation place to which the rope lubricator is attached is narrow, it takes time to supply grease to the rope lubricator for maintenance after the rope lubricator is installed. It is difficult to adjust the hit of the rope against the felt. It is inconvenient to use a dedicated device for refueling.

  Therefore, in view of the above problems, the present invention enables oil supply from the main sheave itself to the rope, and can efficiently supply the surface on the side of the rope peripheral surface that contacts the rope and the main sheave. The purpose is to provide a simple elevator.

  In order to solve such a problem, according to one aspect of the present invention, a hoisting machine having an output shaft, a main sheave supported by the output shaft, and a car counter that is wound around the main sheave. A rope for connecting a weight, and the main sheave includes a sheave body having a sheave groove formed in an outer peripheral portion with which the rope is engaged, and a cavity that is provided inside the sheave body and can be filled with oil. And an oil supply hole provided at the bottom of the sheave groove and communicating with the hollow portion, and oil is supplied to a portion where the sheave groove and the rope are in contact with each other through the oil supply hole. An elevator is provided.

  According to the present invention, it becomes possible to supply oil to the rope from the main sheave itself, and the surface on the side where the rope and the main sheave come in contact with each other is efficiently supplied on the rope peripheral surface.

  Hereinafter, an elevator according to an embodiment of the present invention will be described with reference to FIGS. 1 to 13. In the drawings, the same portions are denoted by the same reference numerals, and redundant description is omitted.

(First embodiment)
FIG. 1 is a schematic overall configuration diagram of an elevator according to a first embodiment of the present invention. The elevator 1 includes a car 2 that can be raised and lowered in a hoistway, a main sheave 5 attached to a hoisting machine 3b installed on a machine beam 3a at the upper part of the hoistway, and a car 2 and a counter at both ends. A plurality of main ropes 4b (only one is shown) connected to a weight 4a and wound around the main sheave 5 are provided. The car 2 and the counterweight 4a are connected by a main rope 4b through a main sheave 5.

  FIG. 2 shows an enlarged view of the main sheave 5 alone. FIG. 2A is a side view of the main sheave 5. FIG. 2B is a longitudinal sectional view of the main sheave 5 along the line AA in FIG. Elements having the same reference numerals in FIG. 2A and FIG. 2B represent the same elements.

  The main sheave 5 is formed by hollowing out the inside of the metal structure. Inside the main sheave 5, there is an axial space 6 formed along the axial direction of the sheave shaft, and a semicircular portion along the inner side of the outer peripheral surface of the sheave body, and a half disposed radially inward of the outer peripheral surface. A cylindrical felt member storage portion 7, a box-shaped tank holder 8 in which a later-described grease tank is stored, and oil passages 9 and 10 communicating with the felt member storage portion 7 and the tank holder 8, respectively, are formed. ing.

  The shaft space 6 is formed with a rotation restricting groove 6a that is fitted to a not-shown sheave shaft or a protrusion on the outer peripheral surface of the boss. The metal structure 11 positioned between the axial space 6 and the felt member storage portion 7 includes a notch arc surface portion 12 having a notch arc-shaped cross section when viewed from the sheave side surface, and a notch arc shape when viewed from the sheave side surface. Let the notch plane part 13 which has a string-shaped cross section be main outer peripheral surfaces. The metal structure 11, the felt member storage 7, the tank holder 8, and the oil passages 9, 10 constitute a sheave body.

  The felt member storage portion 7 includes a notch arc surface portion 12, an arc surface portion 14 having a radius of curvature larger than the radius of curvature of the notch arc surface portion 12, and the left and right edges of the arc surface portion 14 toward the central axis. The plane portions 15 and 16 extend. As shown in FIG. 2B, the felt member storage portion 7 has an abutting surface 17 on one end side along the axial direction, and the other end side is covered with a lid 18. Reference numeral 19 denotes a rope groove, and each main rope 4 b is fitted in each rope groove 19.

  An oil supply hole 20 that is a through hole is formed at the bottom of each rope groove 19. Each oil supply hole 20 also has a function as an undercut. When the oil supply hole 20 functions as an undercut, the main rope 4b enters the oil supply hole 20 by a pressure contact force, so that a friction force larger than the friction force when the groove shape is a round groove is obtained. Yes. The tank holder 8 also has an abutting surface 21 on one end side along the axial direction.

  FIG. 3 shows the necessary items to be incorporated into the sheave body. FIG. 3A is a side view of the main sheave 5, and FIG. 3B is a longitudinal sectional view taken along line AA in FIG. The oil supply felt 22 is a grease-impregnated member impregnated with grease (rope grease) and has a sheet shape. The thickness of the sheet is the same as or smaller than the size of the oil supply hole 20. The plurality of oiling felts 22 are inserted into the felt member storage portion 7 through the rope groove 19 from above.

  The grease tank 23 stored in the tank holder 8 is, for example, a transparent resin container or cassette filled with the grease 24. The grease tank 23 is detachably fitted to the tank holder 8. Both the oil passages 9 and 10 are fitted with pipes 25 and 26 that serve as a flow path for the grease 24. The pipes 25 and 26 are provided with orifices (flow restriction valves) 27 and 28 for restricting the flow rate of the grease 24. FIG. 4 shows the main sheave 5 with these articles mounted on the sheave body. Oil supply felt 22 stored in the felt member storage section 7, grease tank 23 stored in the tank holder 8, grease 24 filled in the grease tank 23, and pipes 25, 26 provided in the oil passages 9, 10. Thus, the oil supply mechanism is configured.

  FIG. 5 is a partially enlarged view of the main sheave 5 to which a plurality of fueling felts 22 are attached, and shows a longitudinal section taken along the line AA in FIG. A plurality of oil supply felts 22 and a plurality of oil supply felts 29 made of the same material as those of the oil supply felts 22 and having a small diameter are arranged in such a manner that each sheet surface is orthogonal to the axial direction. In this manner, the felt member storage unit 7 is disposed. These oil supply felts 22 are inserted so that a part 30 of the outer peripheral portion of each oil supply felt 22 protrudes radially outward from the oil supply hole 20 of the sheave groove 19.

  The refueling felt 22 at the right end of the figure is inserted into the felt member storage portion 7 from above using a wire or the like so as to contact the abutting surface 17. A fueling felt 29 arranged next to the fueling felt 22 is inserted into the felt member storage portion 7 from the left opening end. The refueling felt 29 is pushed in from the left side to the right side. Similarly, each refueling felt 22 is inserted from the sheave groove 19 side, and each sheet is inserted into the felt member storage portion 7 alternately from the opening end so that each refueling felt 29 is positioned to the left of each refueling felt 22. It has come to be.

  When the grease tank 23 shown in FIG. 4 is mounted on the sheave body, the grease 24 passes through the pipes 25 and 26 and is absorbed by the fueling felts 22 and 29. In a state where the main rope 4 b is fitted in each sheave groove 19, pressure is applied to the refueling felt 22 that protrudes radially outward from the sheave groove 19 by each main rope 4 b, so that the grease 24 is squeezed out. The grease 24 oozes out on the outer peripheral surface of the main sheave 5 so that the grease 24 is applied to the main rope 4b every time the main rope 4b passes over the outer periphery.

  Further, in the rotational position of the main sheave 5 when the tank holder 8 is in the horizontal posture, the felt member storage portion 7, the tank holder 8, and the oil passages 9, 10 are formed symmetrically with respect to the vertical plane including the shaft core. ing. The weight balance of the main sheave 5 is designed so that the center of gravity of the main sheave 5 itself is positioned around the axis when the main sheave 5 is rotating. Even if the amount of grease in the grease tank 23 is reduced, the position of the center of gravity of the main sheave 5 is not decentered with respect to the central axis due to the weight of the reduced amount of grease. Since the problem of eccentricity does not occur due to the large amount of grease in the grease tank 23, maintenance of the elevator 1 can be performed only by removing and replacing the grease tank 23 without adjusting the tank position of the grease tank 23. It is like that.

  The operation after the start of the operation of the elevator 1 according to this embodiment having the main sheave 5 having the above-described oil supply structure will be described in the order (1) to (5) below.

(1) When the hoisting machine 3b sends out the main rope 4b, the main sheave 5 rotates 90 ° clockwise from the state of FIG. The state of the main sheave 5 at this time is shown in FIG. As the main sheave 5 rotates, the grease 24 starts to flow from the grease tank 23 toward the direction in which the fuel supply felts 22 and 29 are stored. Since the pipe 26 is provided with an orifice 28, the grease flow rate is limited to a certain ratio. Further, even when the operation direction of the elevator 1 is reversed and the main sheave 5 rotates counterclockwise, the main sheave 5 is the same as the right-handed example by the pipe 25 provided at a position symmetrical to the position of the pipe 26. Perform the action.

(2) When the operation of the elevator 1 is continued for a while, the grease 24 begins to soak into the fuel felts 22 and 29 as the main sheave 5 rotates many times. FIG. 7 shows a state of the main sheave 5 after the operation is continued for a predetermined time. Eventually, the felt member storage portion 7 filled with the fueling felts 22 and 29 is filled with the grease 24.

(3) FIG. 8 is a view showing a portion to which the grease on the rope surface is applied when the oil supply felt 22 is used as the oil supply medium. When the elevator 1 is operated in a state where the grease 24 is impregnated and held in the preceding item (2), the oil supply felt 22 protrudes from the oil supply hole 20 to the outside of the groove portion on the surface of the sheave. The grease 24 oozes out. The grease 24 that has oozed out adheres to the main rope 4b, and rope refueling is established. The grease 24 that does not adhere to the main rope 4b flows along the sheave surface downward on the sheave surface. The grease is supplied to the part from the groove bottom to the groove wall over the entire circumference of the groove, and eventually the grease 24 adheres to the sheave surface over the entire circumference.

  Further, when the main rope 4b is separated from the fuel filler felt 22, the crushed portion is bulged and deformed again, and the end portion of the fuel felt 22 protrudes from the fuel hole 20 to the outside of the diameter. The amount of grease in the sheave groove 19 increases as the oiling felt 22 repeats these bulging and crushing.

(4) If the elevator 1 continues to be operated in the state of (3) above, not only the portion of the sheave groove that protrudes out of the refueling felt 22 but also the entire sheave groove, There is no uneven lubrication on the rope.

(5) Since the embedded grease tank 23 is used, the entire tank is replaced when the remaining amount of grease decreases. Further, since the grease tank 23 is made of a transparent resin, the grease internal volume can be confirmed by visual observation.

  As described above, by adopting the main sheave oil supply structure of the elevator 1 according to the present embodiment for the main sheave 5, it becomes possible to supply the rope without installing a dedicated oil supply device. It is possible to reduce the number of elevator equipment and the installation man-hours.

  Moreover, according to this elevator 1, oil supply to the main rope 4b can be performed now without providing a dedicated apparatus. Since the main sheave 5 and the main rope 4b are always in contact with each other, the oil supply is not interrupted. In the main sheave oil supply structure of the elevator 1, a structure for efficiently lubricating the main rope 4b and the traction sheave groove is provided.

  In this way, according to the elevator 1 according to the present embodiment, by using the sheave having the oil supply structure of the main sheave 5, the main sheave 5 itself can supply oil to the main rope 4b. Since refueling is possible from the sheave itself, refueling can be performed without separately installing a dedicated device for refueling. From the viewpoint of preventing sheave wear, it is possible to efficiently lubricate the surface that requires the most lubrication, that is, the surface on the side where the main rope 4b and the main sheave 5 are in contact with each other.

  If the problem of eccentricity occurs when the main sheave 5 is rotated, an auxiliary weight is attached in the grease tank 23, and a grease tank with a weight is attached to the tank holder 8, whereby the center of gravity of the main sheave 5 is obtained. The position can be adjusted to be on the central axis. Even if the grease tank 23 is mounted on the tank holder 8 and an auxiliary weight is installed below the tank holder 8, the position of the center of gravity can be adjusted in the same manner.

  Further, since the grease tank 23 is easily attached and detached from the main sheave 5, the operator can replenish the grease only by fitting the grease tank 23 filled with the grease 24 into the sheave body. In the elevator 1 according to the present embodiment, since the rope shelter separate from the main sheave 5 is not provided, the operation for refueling can be completed only by replenishing the grease tank 23 with grease. The problem of the installation space of the rope lubricator necessary when installing the rope lubricator is also solved. The operation of adjusting the contact between the rope oil feeder and the felt member required when the rope oil feeder is installed is also unnecessary. Also from such a point, according to the elevator 1, the working efficiency can be improved and the maintenance efficiency can be increased.

  In the above example, the main sheave 5 is used in a state where the refueling felt 22 is packed in the felt member storage portion 7. However, the main sheave 5 embeds the refueling felt 22 in the felt member storage portion 7. Alternatively, the end portion of the refueling felt 22 may be protruded radially outward by utilizing the centrifugal force of rotation. In this way, an appropriate amount of grease can be supplied to the rope.

(Second Embodiment)
Fig.9 (a) is a side view of the main sheave used for the elevator which concerns on the 2nd Embodiment of this invention. FIG. 9B is a longitudinal sectional view taken along line BB of FIG. Elements denoted by the same reference numerals in FIGS. 9A and 9B represent the same elements. In FIG. 9, elements having the same reference numerals as those described above represent the same elements. The overall configuration of the elevator according to the present embodiment is also the same as the overall configuration of the elevator according to the first embodiment.

  Similarly to the main sheave 5, this main sheave also has a hollow portion that is shaped by hollowing out the side surface of the sheave, and in this hollow portion is a grease tank 23, a refueling felt 29a, pipes 25 and 26 that connect them, and orifices 27 and 28. Place. The cut-out hole and the sheave groove 19 are connected by a through hole 31. As in the example of the first embodiment, the oil supply felt 22 does not protrude outward from the oil supply hole 20 of the sheave groove 19, and the oil supply felt 29 a remains in the felt member storage portion 7.

  The main sheave 5A is formed by hollowing out the inside of the metal structure 11. The sheave body of the main sheave 5A has an axial space 6, a felt member storage 7, a tank holder 8, and oil passages 9, 10 not shown in FIG. The grease tank 23 is stored in the tank holder 8. Pipes 25 and 26 with orifices 27 and 28 interposed respectively are attached to the oil passages 9 and 10.

  In the main sheave 5 </ b> A, a plurality of through holes 31 that communicate the felt member storage portion 7 and the sheave groove 19 are formed. The sheet-like refueling felt 29 a has the same outer shape as the side cross-sectional shape of the felt member storage portion 7. The outer peripheral part of each oiling felt 29 a does not protrude radially outward from the oiling hole part of the sheave groove 19, and each of these oiling felts 29 a stores grease in the felt member storage part 7. The plurality of refueling felts 29a are arranged in the felt member storage portion 7 in a state in which each sheet surface is orthogonal to the axial direction. These refueling felts 22 a are pushed in after being inserted into the inside from the left opening end of the felt member storage portion 7. This open end is closed by a lid 18.

  When the elevator according to the present embodiment including the main sheave 5A having such a configuration starts operation, the main sheave 5A rotates clockwise and counterclockwise. Due to the rotation of the main sheave 5A, the grease 24 flows from the grease tank 23 through the pipes 25 and 26 to the refueling felt 29a. The grease flow rate is limited to a certain ratio by the orifices 27 and 28. As the main sheave 5A continues to rotate, the grease 24 penetrates into the fueling felt 29a. The felt member storage portion 7 filled with the oil supply felt 22 a is filled with the grease 24.

  After the grease 24 is impregnated in the refueling felt 29a, the grease 24 gradually flows out into the sheave groove 19 by the centrifugal force of the sheave rotation. The grease adheres to the main rope 4b and the rope lubrication is established. The grease that does not adhere to the main rope 4b travels through the sheave groove 19, and the grease 24 is supplied to the entire circumference of the sheave. The grease 24 adheres to the sheave surface over the entire circumference. The main rope 4b can be refueled evenly. When the remaining amount of grease decreases, the entire grease tank 23 is replaced. By using the grease tank 23 made of a transparent resin, the grease internal volume can be visually confirmed.

  In the elevator according to this embodiment of the present invention, the operation is completed simply by pushing the refueling felt 22a into the felt member storage portion 7, so that the refueling operation can be easily performed.

  Further, also in the main sheave 5 </ b> A used for this elevator, an auxiliary weight can be attached in the grease tank 23, and an auxiliary weight can be installed below the tank holder 8.

  Further, in the main sheave 5A, the amount of grease from the oil supply felt 29a can be adjusted by changing the diameter and shape of the through hole 31. For example, a through hole 31 having a small diameter may be formed, and the grease from the oil supply felt 29a may flow outward using the centrifugal force of rotation. In this way, an appropriate amount of grease can be roped. Can be refueled.

(Third embodiment)
Fig.10 (a) is a side view of the main sheave used for the elevator which concerns on the 3rd Embodiment of this invention. FIG. 10B is a longitudinal sectional view taken along line CC in FIG. Elements denoted by the same reference numerals in FIG. 10A and FIG. 10B represent the same elements. In FIG. 10, elements having the same reference numerals as those described above represent the same elements. The overall configuration of the elevator according to the present embodiment is also the same as the overall configuration of the elevator according to the first embodiment.

  The shape of the main sheave used for this elevator is different from the example of the first embodiment and the example of the second embodiment. A plurality of holes are provided in the upper part of the sectoral tank as seen from the side of the sheave, and a plurality of sectoral refueling felts are inserted into these holes.

  The main sheave 5B is formed by hollowing out the inside of the metal structure 11. Inside the main sheave 5B, there are formed an axial space 6 and four cutout portions 34 that are arranged radially inside the outer peripheral surface along the inner peripheral surface of the sheave body. Each of these four cut-out portions 34 is configured to accommodate a grease tank 33 on which a plurality of sheet-like oil supply felts 32 having a fan-like shape in front view are mounted.

  FIG. 12A is a top view of the grease tank 33 with the fueling felt 32 attached thereto. The upper side and the lower side in the figure represent the back side and the near side in FIG. 10, respectively. FIG. 12B is an enlarged view showing a side surface of the grease tank 33 in a state where the fuel supply felt 32 is attached. The grease tank 33 includes an arcuate bottom that is curved along the arcuate surface on the radially inner side of the hollowed portion 34, two inclined surfaces that extend radially outward from the left and right edges of the bottom, Provided are two standing surfaces extending radially outward from the front side and the back side, and a plurality of elongated insertion ports into which the oil supply felt 32 is inserted continuously at the respective edges of the inclined surfaces and the standing surfaces. And an upper surface. The insertion ports formed on the upper surface are parallel to each other along the axial direction of the sheave shaft.

  That is, five holes are formed in the upper part of the grease tank 33 having a fan-shaped cross section along the side surface of the sheave, and five sheet-like refueling felts 32 having the same outer shape are fan holes. Is plugged into. Moreover, caulking is given to the clearance gap between each insertion port and the oil supply felt 32 so that grease may not leak from these insertion ports. FIG. 12C is a diagram showing a portion to be coked. Each gap is filled with a caulking agent 35 that begins to harden upon contact with air.

  The four grease tanks 33 are fitted into the four cutout portions 34 shown in FIG. The cutout portion 34 is cut out so that the shape of the cutout portion 34 matches the outer shape of the grease tank 33. These oil supply felts 32 are set so that a part of the outer peripheral portion of each oil supply felt 32 protrudes radially outward from the oil supply hole portion of the sheave groove. FIG. 11 shows the main sheave 5B with the oiling felt 32 attached thereto. Accordingly, by setting the oil supply felt 32 in the four grease tanks 33, the grease gradually infiltrates into the oil supply felt 32.

  When the elevator according to the present embodiment including the main sheave 5B having such a configuration starts operation, the radially outer portion of each refueling felt 32 is compressed by the main rope 4b, so that grease oozes out and refueling is established.

  In the main sheave 5B used in the elevator according to this embodiment of the present invention, rope lubrication can be performed without providing the orifices 27 and 28 for limiting the grease flow rate.

  Further, when the remaining amount of grease decreases, the entire grease tank 33 may be replaced. A grease tank 33 made of a transparent resin may be used, and in this way, the grease content can be visually confirmed.

  Further, the main sheave 5B may use the centrifugal force of rotation so that the end of each refueling felt 32 protrudes radially outward. In this way, an appropriate amount of grease can be supplied to the rope. it can. Immediately after the refueling felt 32 is attached, each refueling felt 32 is embedded in the grease tank 33, and when the main sheave 5B rotates, the end of each refueling felt 32 protrudes outward in the diameter direction. To do.

(Modification)
The oil supply felt 32 may be covered with a package. FIG. 13 (a) is a top view of a grease tank with a refueling felt attached to an elevator main sheave according to a modification of the third embodiment of the present invention. FIG.13 (b) is a side view of the grease tank with the oil supply felt of the same figure.

  An oil supply felt 32 covered with a packaging material 36 such as a plastic film is inserted into the grease tank 33. The packaging material 36 is provided with one end 37 of a seal member which is removed after being attached to the sheave body. The other end of the seal member is pulled out of the sheave body through a gap between each cut-out portion and the grease tank. After the operator installs the grease tank 33 on which each of the oil supply felts 32 is mounted on the sheave body, the packing material 36 is pulled from the oil supply felt 32 and peeled off by pulling out the seal member of each of the packing materials 36. Yes. The elevator according to this modification operates in the same manner as the example according to the third embodiment by the rotation of the main sheave 5B having the oil supply felt 32 with the packaging material 36. Refueling is established when the main rope 4b contacts the main sheave 5B.

  With this packaging material 36, the workability is improved because the grease held by the oil supply felt 32 does not adhere to the operator's hand during maintenance. When the operation of fitting the tank with the oil supply felt into the main sheave 5B is performed, dust or the like does not adhere to the sheave groove, so that wear of the sheave groove and deterioration of the main rope 4b can be prevented.

(Other)
Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. The shapes of the felt member storage 7 and the tank holder 8 can be changed. In the above embodiment, the refueling felts 22, 29, 29 a stored in the felt member storage unit 7 have a sheet shape. In the elevator according to the embodiment of the present invention, the shape, size, number, sheet thickness, and the like of the oil supply felt stored in the felt member storage unit 7 can be variously changed. Felt is used as the grease holder, but the grease holder may be any material including a material capable of absorbing grease.

  In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

1 is a schematic overall configuration diagram of an elevator according to a first embodiment of the present invention. It is an enlarged view of the main sheave alone. It is a figure which shows the main sheave used for the elevator which concerns on the 1st Embodiment of this invention. It is a figure which shows the main sheave after all the necessary articles are attached to the sheave body. It is the elements on larger scale of the main sheave with which a plurality of impregnation members were attached. It is a figure which shows the main sheave of the state after rotating 90 degrees clockwise from the state of FIG. It is a figure which shows the state of the main sheave after having continued driving | running for the predetermined time. It is a figure which shows the part to which the grease of a rope surface is apply | coated. It is a figure which shows the main sheave used for the elevator which concerns on the 2nd Embodiment of this invention. It is a figure which shows the main sheave used for the elevator which concerns on the 3rd Embodiment of this invention. It is a figure which shows the main sheave in the state by which the impregnation member was mounted | worn with the main sheave of FIG. (A) is a top view of the grease tank in a state where the impregnation member is mounted, (b) is an enlarged view of a side surface of the grease tank in a state where the impregnation member is mounted, and (c) is a caulking. It is a figure which shows the site | part processed. It is a figure which shows the grease tank with a fueling felt with which the main sheave of the elevator which concerns on the modification of the 3rd Embodiment of this invention is mounted | worn.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Elevator, 2 ... Car, 3a ... Machine beam, 3b ... Hoisting machine, 4a ... Counterweight, 4b ... Main rope (rope) 5, 5A, 5B ... Main sheave, 6 ... Axial space, 6a ... Rotation restriction Groove, 7 ... felt member housing (second cavity), 8 ... tank holder (first cavity), 9, 10 ... oil passage, 11 ... metal structure, 12 ... notched arc surface, 13 ... cut Notch plane part, 14 ... Arc surface part, 15, 16 ... Plane part, 17, 21 ... Abutting surface, 18 ... Lid, 19 ... Sheave groove, 20 ... Oil supply hole, 22, 29, 29a, 32 ... Oil supply felt (including grease) Erosion member), 23, 33 ... grease tank, 24 ... grease, 25, 26 ... pipe, 27, 28 ... orifice (flow restriction valve), 30 ... oil supply felt outer peripheral part, 31 ... through hole, 34 ... hollowed out part, 35 ... caulking agent, 36 ... pack Wood, 37 ... seal member.

Claims (10)

A hoisting machine having an output shaft;
A main sheave supported on the output shaft,
A rope that is wound around the main sheave and connects the car and the counterweight;
The main sheave is
A sheave body in which a sheave groove with which the rope is engaged is formed on the outer periphery;
A hollow portion provided inside the sheave body and capable of being filled with oil;
An oil supply hole provided at the bottom of the sheave groove and communicating with the cavity;
Provided,
An elevator wherein oil is supplied to a portion where the sheave groove and the rope are in contact with each other through the oil supply hole. Two or more hollow portions are provided, a grease tank filled with grease is accommodated in the first cavity portion, and a grease impregnating member impregnating the grease is accommodated in the second cavity portion,
2. The elevator according to claim 1, further comprising an oil passage that communicates the first cavity and the second cavity.   The elevator according to claim 2, wherein the grease tank is set so as to be detachable from the sheave body.   The elevator according to claim 2, wherein the grease-impregnated member protrudes radially outward from the sheave groove through the oil supply hole.   The elevator according to claim 2, wherein the oil passage is provided with a flow restriction valve for restricting a flow rate of the grease.   The elevator according to claim 2, wherein the first cavity portion and the second cavity portion are provided symmetrically with respect to a plane including the axis of the sheave body.   The elevator according to claim 1, wherein the grease impregnated in the grease impregnated member flows out into the sheave groove by a centrifugal force of rotation of the main sheave.   A plurality of the cavity portions are provided, and each cavity portion contains a grease tank filled with grease and a grease-impregnated member inserted into the grease tank and impregnating the grease. The elevator according to claim 1.   The elevator according to claim 8, wherein a gap between the insertion port into which the grease impregnated member of the grease tank is inserted and the grease impregnated member is closed with a caulking material.   The grease-impregnated member is provided with a packaging material that covers the grease-impregnated member, and a seal member that is detachably attached to the packaging material, and the seal member is peeled from the packaging material, The elevator according to claim 9, wherein the grease-impregnated member is exposed by opening the packaging material.

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