JP2013018630A - Elevator hoisting machine and method of replacing contact material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator hoisting machine capable of preventing a lubricant leaking from a bearing from reaching a rotor and facilitating replacement work of a contact material in contact with a main shaft, and to provide a method of replacing the contact material.SOLUTION: In this elevator hoisting machine 1, a lubricant shield 12 having a felt (contact material) 21 is detachably attached to a bearing pedestal 11 by a long bolt 13. The lubricant shield 12 prevents the lubricant leaking from the bearing 10 from reaching a rotor 4 by being attached to the bearing pedestal 11 while bringing the felt 21 into contact with a main shaft 3 in a space between the rotor 4 and the bearing pedestal 11. The bearing pedestal 11 is provided with: a first through hole 15 into which the long bolt 13 is inserted from an opposite side of the rotor 4 as seen from the bearing pedestal 11; and a second through hole 16 for passing therethrough a temporary fixing screw 41 for detachably attaching the lubricant shield 12 detached from the bearing pedestal 11 to the rotor 4.

Description

  The present invention relates to an elevator hoisting machine in which a main shaft that rotates integrally with a rotating body (for example, a sheave or a brake disk) is supported by a bearing base via a bearing, and a space between the rotating body and the bearing base It is related with the replacement | exchange method of the contact material which replaces | exchanges the contact material of the lubricant shielding body arrange | positioned.

  2. Description of the Related Art Conventionally, an elevator hoisting machine is known in which a shaft that rotates integrally with a drive sheave and a brake disk is rotatably supported by a bearing stand via a bearing (see, for example, Patent Document 1).

JP 2004-1007048 A

  In such a conventional elevator hoist, lubricant (for example, oil, grease, etc.) injected into the bearing may leak from the bearing and adhere to the drive sheave or brake disk.

  In order to prevent lubricant from adhering to the drive sheave and brake disc, the felt (contact material) is held by a mounting bracket attached to the bearing stand, and the felt between the drive sheave or brake disc and the bearing stand is retained. It is considered that the lubricant from the bearing is wiped off with felt by bringing the shaft into contact with the outer peripheral surface of the shaft. However, when the mounting bracket is arranged in a narrow space between the drive sheave or brake disk and the bearing base, it is difficult to remove the mounting bracket from the bearing base, and it takes time to replace the felt.

  The present invention has been made to solve the above-described problems, and can prevent the lubricant leaked from the bearing from reaching the rotating body and also replace the contact material contacting the main shaft. It is an object of the present invention to provide an elevator hoist that can be easily performed and a contact material exchange method.

  An elevator hoisting machine according to the present invention includes a motor, a main shaft that is rotated by a driving force of the motor, a rotating body that is rotated integrally with the main shaft, a bearing through which the main shaft is rotatably passed, a bearing base that supports the bearing, Lubricant that has a contact material and prevents lubricant leaking from the bearing from reaching the rotating body by being attached to the bearing base while contacting the main shaft in the space between the rotating body and the bearing base. A shield and a bearing base-side fastener for detachably attaching the lubricant shield to the bearing base are provided, and the bearing base-side fastener is inserted into the bearing base from the opposite side of the rotating body as viewed from the bearing base. And a second through hole for allowing the rotating body side fastener to removably attach the lubricant shield removed from the bearing stand to the rotating body.

  In the contact material replacement method according to the present invention, a contact material is brought into contact with a rotating shaft in a space between a rotating body that is rotated integrally with the main shaft and a bearing base that supports a bearing through which the main shaft is rotatably passed. A contact material replacement method for replacing a contact material by removing a lubricant shield attached to a bearing base while the lubricant is inserted into a first through hole provided in the bearing base, and the lubricant A step of removing the fastener from the first through hole, and a guide member is inserted into the first through hole from which the bearing base side fastener has been removed. A guide member mounting process for passing a guide member between the rotating body, a moving process for moving the lubricant shield toward the rotating body while guiding the guide member, and a position different from the first through hole of the bearing base. Moisture with the rotating body side fastener passed through the second through-hole And a rotor side attaching step, and the rotor turning step of turning the rotation body fitted with lubricant shield to displace the lubricant shield to a predetermined replacement position for attaching the agent shields the rotating body.

  In the elevator hoist according to the present invention, the first through hole into which the bearing base side fastener for removably attaching the lubricant shield to the bearing base is inserted, and the lubricant shield removed from the bearing base are provided. Since the bearing base is provided with the second through hole for allowing the rotating body side fastener to be detachably attached to the rotating body, the lubricant is applied to the bearing base and the rotating body by an operation from the outside of the hoisting machine. A shield can be selectively attached. Thus, during normal operation of the hoisting machine, it is possible to prevent the lubricant from adhering to the rotating body by the lubricant shield attached to the bearing stand. Also, when replacing the contact material, the lubricant shield is attached to the rotating body by operating from the outside of the hoisting machine, and the rotating body is rotated to displace the lubricant shield to a predetermined replacement position where the contact material can be easily replaced. be able to. Thereby, the exchange operation | work of a contact material can be made easy.

  In the contact material replacement method according to the present invention, after removing the bearing base side fastener from the first through hole, the guide member is inserted into the first through hole, and the lubricant shield is guided by the guide member. While moving the lubricant shield toward the rotating body and attaching the lubricant shielding body to the rotating body with the rotating body side fastener passed through the second through hole, the lubricant shielding body is removed from the bearing stand and rotated. The work of attaching to the body can be performed by an operation from the outside of the hoisting machine. Accordingly, it is possible to greatly reduce access to a narrow space between the rotating body and the bearing stand when exchanging the contact material. Further, by rotating the rotating body to which the lubricant shield is attached, the lubricant shield can be easily displaced to a predetermined replacement position where the contact material can be easily replaced. Thereby, the exchange operation | work of a contact material can be made easy. Furthermore, since the lubricant shield can be attached to the bearing base with the bearing base side fastener by an operation from the outside of the hoisting machine, it is easy to prevent the lubricant leaking from the bearing from reaching the rotating body. Can do.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing an elevator hoist according to Embodiment 1 of the present invention. It is a partially broken side view which shows the winding machine for elevators of FIG. It is a front view which shows the lubricant shielding body of FIG. It is a top view which shows the lubricant shielding body of FIG. It is sectional drawing which shows the principal part of the spindle support apparatus of FIG. FIG. 6 is a cross-sectional view illustrating a state where a guide member is inserted into the first through hole of FIG. 5. It is sectional drawing which shows the state in which the lubricant shielding body of FIG. 6 was attached to the rotary body attachment plate with the temporary fixing screw.

Embodiment 1 FIG.
FIG. 1 is a front view showing an elevator hoist according to Embodiment 1 of the present invention. FIG. 2 is a partially broken side view showing the elevator hoisting machine of FIG. In the figure, an elevator hoist 1 includes a motor 2, a main shaft (rotary shaft) 3 that protrudes horizontally from the motor 2 and is rotated by the driving force of the motor 2, and a rotating body 4 that is rotated integrally with the main shaft 3. And a main shaft support device 5 that is disposed away from the rotating body 4 in the axial direction of the main shaft 3 and rotatably supports the main shaft 3, and is supported by the main shaft support device 5 and applies a plurality of braking forces to the rotating body 4. (In this example, two) brake devices 6 are provided.

  The rotating body 4 is disposed between the motor 2 and the main shaft support device 5 in the axial direction of the main shaft 3. The rotating body 4 includes a driving sheave 7 fixed to the main shaft 3 and a disc-shaped brake disk 8 that is fixed to the driving sheave 7 and protrudes radially outward from the driving sheave 7. Yes.

  A plurality of grooves 9 are provided in the outer peripheral portion of the drive sheave 7 along the circumferential direction of the drive sheave 7. A main rope (for example, a rope or a belt) for suspending a car and a counterweight (both not shown) is wound around the drive sheave 7 along the groove 9. The car and the counterweight are moved up and down in the hoistway by the rotation of the driving sheave 7.

  The main shaft support device 5 includes a bearing 10 through which the main shaft 3 is rotatably passed, a bearing base 11 that supports the bearing 10, a lubricant shield 12 that is attached to the bearing base 11 in contact with the main shaft 3, and lubrication. It has a long bolt (bearing base side fastener) 13 for detachably attaching the agent shield 12 to the bearing base 11.

  A bearing hole 14 is provided in the upper part of the bearing stand 11. The bearing 10 is attached to the tip of the main shaft 3 in a state of being fitted in the bearing hole 14. The bearing stand 11 supports the bearing 10. Thereby, the main shaft 3 is rotatably supported by the bearing base 11 via the bearing 10. The bearing 10 is injected with a lubricant (for example, grease or oil) for smooth rotation of the main shaft 3.

  Each brake device 6 is attached to the upper part of the bearing stand 11 via a brake attachment member 17 (FIG. 1). As shown in FIG. 1, each brake device 6 is disposed at a symmetrical position in the horizontal direction with respect to the axis of the main shaft 3. That is, the brake device 6 is disposed on the left and right of the upper portion of the bearing base 11. As a result, in the region below the position of the main shaft 3, each brake device 6 and the bearing base 11 become obstructive, and the space around the hoisting machine 1 (winding) It is difficult to access from outside the machine 1. On the other hand, in the region above the position of the main shaft 3, the space between the rotating body 4 and the bearing base 11 is accessed from the outside of the hoisting machine 1 while avoiding interference between the brake device 6 and the bearing base 11. It is easy to do.

  Further, the brake device 6 brakes against a biasing force of the spring by being energized with a braking body that contacts and separates from the brake disk 8, a spring (biasing body) that biases the brake disk 8 in a direction to contact the brake disk 8. And an electromagnetic magnet for displacing the braking body in a direction away from the disk 8 (both not shown). The brake device 6 applies a braking force to the rotating body 4 by bringing the braking body into contact with the brake disk 8, and releases the braking force applied to the rotating body 4 by separating the braking body from the brake disk 8.

  The bearing base 11 includes a plurality of (three in this example) first through holes 15 penetrating the bearing base 11 below the bearing 10 and the bearing bases 11 at positions different from the first through holes 15. A plurality of (three in this example) second through holes 16 are provided.

  The first and second through holes 15 and 16 penetrate the bearing base 11 along the main shaft 3. Accordingly, one end of each of the first and second through holes 15 and 16 is opened to the outside of the hoisting machine 1 (a space around the hoisting machine 1), and the first and second through holes 15 and 16 are opened. The other end of each is opened in a space between the rotating body 4 and the bearing base 11.

  In this example, as shown in FIG. 1, the first through holes 15 are arranged apart from each other in the circumferential direction of the main shaft 3. The second through-holes 16 are disposed at positions farther from the main shaft 3 in the radial direction than the first through-holes 15, and are arranged in the circumferential direction of the main shaft 3 in accordance with the position of the first through-hole 15. They are placed apart. Further, in this example, the inner diameter of the second through hole 16 is larger than the inner diameter of the first through hole 15.

  One lubricant shield 12 is disposed above and below the main shaft 3 in the space between the rotating body 4 and the bearing base 11. Each lubricant shield 12 is disposed so as to surround the main shaft 3 with the main shaft 3 sandwiched from above and below.

  Here, FIG. 3 is a front view showing the lubricant shield 12 of FIG. FIG. 4 is a plan view showing the lubricant shield 12 of FIG. The shape of each lubricant shield 12 is a shape obtained by dividing the ring into halves when viewed from the front. Accordingly, each lubricant shield 12 has an annular shape surrounding the main shaft 3 as a whole by sandwiching the main shaft 3 from above and below.

  The lubricant shield 12 includes a felt (contact material) 21 that is made of fiber and contacts the main shaft 3 along the circumferential direction of the main shaft 3, and holds the felt 21 along the circumferential direction of the main shaft 3. And a felt holder (contact material holder) 22 to be attached. The lubricant shield 12 is attached to the bearing stand 11 with the felt 21 in contact with the main shaft 3.

  The felt holder 22 has an outer diameter larger than the outer diameter of the felt 21 and has a bearing base mounting plate 23 attached to the bearing base 11, and has an outer diameter smaller than that of the bearing base mounting plate 23. A sandwiching plate 24 sandwiching the felt 21 therebetween, and a bolt 25 and a nut 26 (fasteners 25, 26) that fasten the bearing mount mounting plate 23 and the sandwiching plate 24. The felt 21 is held between the bearing mount mounting plate 23 and the sandwiching plate 24 by being fastened by the bolt 25 and the nut 26 with the bearing mount mounting plate 23 and the sandwiching plate 24 sandwiching the felt 21.

  The bearing mount mounting plate 23 includes a plurality of (three in this example) first through holes 27 penetrating the bearing mount mounting plate 23 and a bearing mount mounting plate that is radially outward from the first through holes 27. A plurality of (three in this example) second through-holes 28 penetrating through 23 are provided. The first through hole 27 is arranged corresponding to the position of the first through hole 15, and the second through hole 28 is arranged corresponding to the position of the second through hole 16. Therefore, in the state where the bearing mount mounting plate 23 is mounted on the bearing mount 11, the position of the first through hole 27 is set to the position of the first through hole 15 in the axial direction of the main shaft 3 as shown in FIG. 2. The positions of the second through holes 28 are overlapped with the positions of the second through holes 16. The inner diameter of the first through hole 27 is substantially the same as the inner diameter of the first through hole 15. The inner diameter of the second through hole 28 is smaller than the inner diameter of the second through hole 16.

  In this example, the first through holes 27 are arranged apart from each other in the circumferential direction of the felt holder 22, and the second through holes 28 are radially outside of the first through holes 27 and the first through holes 27. The felt holders 22 are arranged away from each other in the circumferential direction while being aligned with the positions of the holes 27.

  A plurality (three in this example) of nuts 29 to which the long bolts 13 are screwed are fixed to the bearing mount 23 by welding or the like in accordance with the positions of the first through holes 27.

  When the lubricant injected into the bearing 10 leaks, the lubricant leaked from the bearing 10 may reach the rotating body 4 along the main shaft 3. If the lubricant adheres to the rotating body 4, slippage of the main rope with respect to the drive sheave 7, reduction of the braking force of the brake device 6 with respect to the brake disk 8, etc. occur.

  The lubricant shield 12 is attached to the bearing base 11 while the felt 21 is in contact with the main shaft 3 in the space between the rotating body 4 and the bearing base 11, so that the lubricant leaked from the bearing 10 is applied to the rotating body 4. To prevent it. The lubricant that leaks from the bearing 10 and travels along the outer peripheral surface of the main shaft 3 toward the rotating body 4 is wiped off before the rotating body 4 by the felt 21 that contacts the main shaft 3. Thereby, adhesion of the lubricant to the rotating body 4 is prevented.

  The length of the long bolt 13 is longer than the length of the first through hole 15. Of the lubricant shields 12 disposed above and below the main shaft 3, the lubricant shield 12 disposed on the lower side is a space around the hoisting machine 1 (on the side opposite to the rotating body 4 when viewed from the bearing stand 11). The long bolts 13 inserted in this order from the first through hole 15 and the first through hole 27 are fastened to the nut 29 so as to be detachably attached to the bearing stand 11. Of the lubricant shields 12 disposed above and below the main shaft 3, the lubricant shield 12 disposed on the upper side is a normal bolt (not shown) inserted into the second through hole 28 from the rotating body 4 side. ) Is detachably attached to the upper portion of the bearing stand 11. In a state where the lubricant shield 12 is attached to the bearing stand 11, the felt 21 is in contact with the outer peripheral surface of the main shaft 3.

  As shown in FIG. 2, a rotating body mounting plate (rotating body mounting member) 31 facing the bearing base 11 in the axial direction of the main shaft 3 is mounted on the rotating body 4 with bolts 32. In this example, the rotating body mounting plate 31 is disposed perpendicular to the axis of the main shaft 3.

  The rotating body mounting plate 31 includes a plurality of (three in this example) first insertion holes 33 penetrating the rotating body mounting plate 31 at positions corresponding to the first through holes 15 and second through holes. A plurality of (three in this example) second insertion holes 34 penetrating the rotating body mounting plate 31 are provided at positions corresponding to 16. Therefore, by adjusting the rotational position of the rotating body 4, the first insertion hole 33 faces the first through hole 15 and the second insertion hole 34 is the second through hole in the axial direction of the main shaft 3. It faces the hole 16.

  In this example, the first insertion holes 33 are arranged apart from each other in the circumferential direction of the rotating body 4, and the second insertion holes 34 are radially outside of the first insertion holes 33, and the first insertion holes The rotors 4 are arranged away from each other in the circumferential direction while being aligned with the position 33.

  A plurality (three in this example) of nuts 35 are fixed to the rotating body mounting plate 31 by welding or the like in accordance with the position of the second insertion hole 34.

  In the hoisting machine 1, for example, the amount of lubricant wiped off by the felt 21 exceeds the allowable amount of the felt 21 or the felt 21 is worn. Therefore, each lubricant shield 12 is periodically replaced with a new felt. There is a need to. When the felt 21 is replaced, the lubricant shield 12 is removed from the bearing base 11.

  The lower lubricant shield 12 removed from the bearing base 11 is attached to the rotating body by a temporary fastening screw (rotating body side fastener) 41 (FIGS. 5 to 7), which will be described later, inserted into the second through hole 28. The plate 31 is detachable. The temporary fastening screw 41 can pass through the second through hole 16. That is, the second through-hole 16 is a through-hole through which a temporary fastening screw 41 for detachably attaching the lower lubricant shield 12 to the rotating body 4 is passed. In the lower lubricant shield 12 removed from the bearing base 11, the temporary fastening screw 41 inserted into the second through hole 28 through the second through hole 16 is screwed into the nut 35. Thus, the rotating body 4 is attached to the rotating body 4 via the rotating body mounting plate 31. The lubricant shield 12 attached to the rotating body 4 can be displaced to a predetermined replacement position opened to the outside above the main shaft 3 by being rotated integrally with the rotating body 4.

  Next, a method for replacing the felt 21 will be described. First, a procedure for exchanging the felt 21 of the lubricant shield 12 arranged on the upper side of the main shaft 3 will be described. When replacing the felt 21 of the upper lubricant shield 12, the bolts are first removed and the upper lubricant shield 12 is removed from the bearing base 11, and then wound from the space between the rotating body 4 and the bearing base 11. The upper lubricant shield 12 is taken out of the upper machine 1.

  Thereafter, the bolts 25 and nuts 26 of the upper lubricant shield 12 taken out to the outside are loosened to remove the used felt 21 from the felt holder 22, and the felt 21 of the upper lubricant shield 12 is replaced with a new felt 21. Replace with.

  Thereafter, the lubricant shield 12 is returned to the position above the main shaft 3, and the lubricant shield 12 is attached to the bearing base 11 with bolts. In this way, the felt 21 of the upper lubricant shield 12 is replaced.

  On the upper side of the main shaft 3, a space between the rotating body 4 and the bearing stand 11 is open to the outside of the hoisting machine 1. Accordingly, the upper lubricant shield 12 is attached to and removed from the bearing base 11 by directly accessing the space between the rotating body 4 and the bearing base 11 from the outside of the hoist 1 and attaching / detaching the bolts. .

  Next, a procedure for exchanging the felt 21 of the lubricant shield 12 arranged on the lower side of the main shaft 3 will be described. 5 to 7 are cross-sectional views for explaining a method of replacing the felt 21 of the lubricant shield 12 on the lower side of FIG. 2, and FIG. 5 is a cross-sectional view showing a main part of the spindle support device 5 of FIG. 6 is a cross-sectional view showing a state in which the guide member 51 is inserted into the first through hole 15 of FIG. 5, and FIG. 7 is a diagram showing the state where the lubricant shield 12 of FIG. It is sectional drawing which shows the attached state.

  When replacing the felt 21 of the lower lubricant shield 12, first, the long bolt 13 is turned outside the hoist 1 to remove the long bolt 13 from the nut 29, and then the nut 29 and the first through hole 27. And the long volt | bolt 13 is extracted to the exterior of the winding machine 1 from the 1st through-hole 15 (fastener removal process).

  Thereafter, as shown in FIG. 6, a rod-shaped guide member 51 is inserted from the outside of the hoisting machine 1 into the first through hole 15 from which the long bolt 13 has been removed, the first through hole 27 and the nut 29. At this time, the position of the first insertion hole 33 is displaced to a position facing the first through hole 15 while rotating the rotating body 4, and the guide member 51 from the nut 29 is also inserted into the first insertion hole 33. . Thereby, the guide member 51 is passed between the rotating body mounting plate 31 of the rotating body 4 and the bearing base 11. The diameter of the guide member 51 is smaller than the diameter of the long bolt 13 and is a diameter that passes through all of the first through hole 15, the first through hole 27, the hole of the nut 29, and the first insertion hole 33. ing. At this time, if all the long bolts 13 are removed before the guide member 51 is inserted, the lower lubricant shield 12 falls down, so that the removal of the long bolt 13 and the insertion of the guide member 51 The long bolt 13 and the guide member 51 are sequentially replaced while performing the above alternately (guide member mounting step).

  Thereafter, a temporary fastening screw (rotating body side fastener) 41 is inserted into the second through hole 16 from the outside of the hoist 1 so that the temporary fastening screw 41 passes through the second through hole 16. Thereafter, the screw portion of the temporary fastening screw 41 that has passed through the second through hole 16 is inserted into the second through hole 28. Thereafter, the temporary fastening screw 41 is pushed with a tool such as a driver, and the lower lubricant shield 12 is moved toward the rotating body 4 while being guided by the guide member 51 (moving step).

  Thereafter, as shown in FIG. 7, the temporary fastening screw 41 is turned with a tool such as a screwdriver so that the temporary fastening screw 41 is screwed onto the nut 35, and the lubricant shield 12 is attached to the rotating body attachment plate 31. At this time, the screw portion of the temporary fastening screw 41 screwed into the nut 35 is inserted into the second insertion hole 34 (rotating body side attaching step).

  Thereafter, the guide member 51 is extracted from the first through hole 15, the first through hole 27, the nut 29, and the first insertion hole 33. As a result, the rotating body 4 and the lower lubricant shielding body 12 are integrally rotatable about the main shaft 3 (guide member removal step).

  Thereafter, the rotating body 4 to which the lower lubricant shield 12 is attached is turned to displace the lower lubricant shield 12 to a predetermined replacement position opened to the outside above the main shaft 3 ( Rotating body turning process).

  Thereafter, the temporary fastening screw 41 is turned to remove the lower lubricant shielding body 12 from the rotating body mounting plate 31, and then is lowered from the space between the rotating body 4 and the bearing base 11 to the outside of the hoisting machine 1. The lubricant shield 12 on the side is taken out (lubricant shield removing step).

  Thereafter, the bolts 25 and nuts 26 of the lower lubricant shield 12 taken out to the outside are loosened, the used felt 21 is removed from the felt holder 22, and the felt 21 of the lower lubricant shield 12 is replaced with a new one. The felt 21 is replaced (contact material replacement step).

  Thereafter, the lower lubricant shield 12 after replacing the felt 21 is attached to the rotating body mounting plate 31 with the temporary fixing screw 41, and the lower lubricant shield 12 is attached to the bearing base by the reverse procedure described above. 11 is attached. At this time, the lower lubricant shield 12 cannot be pushed and moved by the temporary fastening screw 41 from the rotating body 4 toward the bearing base 11, but is wound around the space between the rotating body 4 and the bearing base 11. The lower lubricant shield 12 can be moved from the rotating body 4 toward the bearing base 11 with a rod-shaped tool inserted from the outside of the upper machine 1.

  In such an elevator hoist 1, the first through hole 15 into which the long bolt 13 for detachably attaching the lubricant shield 12 to the bearing base 11 is inserted, and the lubricant shield removed from the bearing base 11. Since the bearing base 11 is provided with the second through hole 16 for allowing the temporary fastening screw 41 to removably attach the body 12 to the rotating body 4, the bearing 12 can be operated by operating from the outside of the hoisting machine 1. The lubricant shield 12 can be selectively attached to the table 11 and the rotating body 4. As a result, during normal operation of the hoist 1, it is possible to prevent the lubricant from adhering to the rotating body 4 by the lubricant shield 12 attached to the bearing base 11. Further, when the felt 21 is replaced, the lubricant shield 12 is attached to the rotating body 4 by an operation from the outside of the hoist 1 and the rotating body 4 is rotated to displace the lubricant shielding body 12 to a predetermined replacement position. be able to. That is, when the felt 21 is replaced, access to the narrow space between the rotating body 4 and the bearing base 11 can be greatly reduced, and the lubricant shield 12 is moved to a predetermined replacement position where the felt 21 can be easily replaced. It can be easily displaced. Thereby, the exchange work of the felt 21 can be made easy.

  Further, in such a method of replacing the felt 21, after the long bolt 13 is removed from the first through hole 15, the guide member 51 is inserted into the first through hole 15, and the lubricant shield is inserted into the guide member 51. The lubricant shield 12 is moved toward the rotating body 4 while guiding the screw 12, and the lubricant shielding body 12 is attached to the rotating body 4 with the temporary fastening screw 41 that has passed through the second through-hole 16. The operation of removing the shield 12 from the bearing base 11 and attaching it to the rotating body 4 can be performed by an operation from the outside of the hoist 1. Therefore, the access to the narrow space between the rotary body 4 and the bearing stand 11 can be significantly reduced when the felt 21 is replaced. Further, by rotating the rotating body 4 to which the lubricant shield 12 is attached, the lubricant shield 12 can be easily displaced to a predetermined replacement position where the felt 21 can be easily replaced. Thereby, the exchange work of the felt 21 can be made easy. Further, since the lubricant shield 12 can be attached to the bearing base 11 with the long bolt 13 by an operation from the outside of the hoist 1, it is easy for the lubricant leaked from the bearing 10 to reach the rotating body 4. Can be prevented.

  In addition, the first insertion hole 33 into which the guide member 51 passed through the first through hole 15 is inserted is provided in the rotating body mounting plate 31, and the rotating body mounting plate 31 is mounted on the rotating body 4. The guide member 51 passed between the rotating body 4 and the bearing base 11 can be stabilized. Thereby, the operation | work which moves the lubricant shielding body 12 between the rotary body 4 and the bearing stand 11 can be performed more reliably and easily.

  In the above example, the felt 21 is used as a contact material that contacts the main shaft 3. However, the felt 21 is not limited to this, and the outer surface of the main shaft 3 is lubricated toward the rotating body 4 in contact with the main shaft 3. What is necessary is just to prevent the agent from being transmitted.

  Further, in the above example, the rotating body mounting plate 31 provided with the first insertion hole 33 into which the guide member 51 is inserted is mounted on the rotating body 4, but the first insertion hole 33 is formed in the rotating body 4. May be provided directly.

  Further, in the above example, the first insertion hole 33 into which the guide member 51 is inserted is provided in the rotating body mounting plate 31. However, the rotating body can be obtained simply by bringing the guide member 51 into contact with the rotating body mounting plate 31. Since the guide member 51 can be passed between the bearing 4 and the bearing base 11, the first insertion hole 33 may not be provided in the rotating body mounting plate 31.

  In the above example, the nut 35 to which the temporary fixing screw 41 is screwed is fixed to the rotating body mounting plate 31, and the second insertion hole 34 into which the screw portion of the temporary fixing screw 41 is inserted is the rotating body mounting plate. The second insertion hole 34 is directly provided in the rotating body 4, and the nut 35 to which the temporary fixing screw 41 is screwed is fixed to the rotating body 4 according to the position of the second insertion hole 34. May be. Further, a screw hole into which the temporary fixing screw 41 is screwed may be directly provided in the rotating body 4.

  Further, in the above example, the rotating body 4 has a configuration in which the driving sheave 7 and the brake disk 8 are integrated. However, the driving sheave 7 and the brake disk 8 may be separated as rotating bodies. . Even in this case, the lubricant shield 12 can be detachably attached to at least one of the drive sheave 7 and the brake disk 8, and the rotating body (the drive sheave 7 or the brake attached with the lubricant shield 12). By turning the disk 8), the lubricant shield 12 can be displaced to a predetermined replacement position where the felt 21 can be easily replaced.

  1 hoisting machine (elevator hoisting machine), 2 motor, 3 spindle, 4 rotating body, 10 bearing, 11 bearing stand, 21 felt (contact material), 12 lubricant shield, 13 long bolt (fastening on the bearing stand side) 15) 1st through-hole, 16 2nd through-hole, 41 Temporary fastening screw (rotating body side fastener), 51 Guide member, 31 Rotating body mounting plate (rotating body mounting member), 33 1st insertion hole .

Claims (3)

motor,
A spindle rotated by the driving force of the motor,
A rotating body rotated integrally with the main shaft;
A bearing through which the main shaft is rotatably passed,
A bearing stand for supporting the bearing;
The contact member has a contact material, and is attached to the bearing base while the contact material is in contact with the main shaft in a space between the rotating body and the bearing base. A lubricant shield that prevents the lubricant shield from being reached, and a bearing base side fastener that detachably attaches the lubricant shield to the bearing base,
The bearing base includes a first through hole into which the bearing base side fastener is inserted from the opposite side of the rotating body as viewed from the bearing base, and the lubricant shield removed from the bearing base. The elevator hoisting machine is provided with a second through hole for allowing the rotating body side fastener to be detachably attached to the body to pass therethrough. In a space between a rotating body that is rotated integrally with the main shaft and a bearing base that supports a bearing through which the main shaft is rotatably passed, a contact material is attached to the bearing base while contacting the rotating shaft. A contact material replacement method for removing the lubricant shield from the bearing stand and replacing the contact material,
A fastener removing step of removing the bearing stand side fastener inserted in the first through hole provided in the bearing stand and attaching the lubricant shield to the bearing stand from the first through hole;
A guide member mounting step of inserting a guide member into the first through hole from which the bearing base side fastener has been removed, and passing the guide member between the bearing base and the rotating body;
A moving step of moving the lubricant shield toward the rotating body while guiding the guide member;
A rotating body side mounting step of mounting the lubricant shield on the rotating body with a rotating body side fastener that has passed through a second through hole provided at a position different from the first through hole of the bearing stand, and the lubrication A method for exchanging a contact material, comprising: a rotating body rotating step of rotating the rotating body to which the agent shielding body is attached to displace the lubricant shielding body to a predetermined replacement position.   The contact member replacement method according to claim 2, wherein a rotating body mounting member provided with an insertion hole into which the guide member is inserted is attached to the rotating body.

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