CN111453583B - Cleaning device for tension pulley of elevator - Google Patents
Cleaning device for tension pulley of elevator Download PDFInfo
- Publication number
- CN111453583B CN111453583B CN201910738886.2A CN201910738886A CN111453583B CN 111453583 B CN111453583 B CN 111453583B CN 201910738886 A CN201910738886 A CN 201910738886A CN 111453583 B CN111453583 B CN 111453583B
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- Prior art keywords
- sheave
- cleaning device
- contact portion
- tension pulley
- elevator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/12—Checking, lubricating, or cleaning means for ropes, cables or guides
- B66B7/1276—Cleaning means
- B66B7/1284—Cleaning means specially adapted for ropes or cables
Abstract
The invention provides a cleaning device for a tension pulley of an elevator. The cleaning device (24) is provided with a contact section (27), a support arm (26), and a mounting section (25). The tension pulley (15) has a sheave (17) and a frame (18). A speed governor rope (14) of an elevator (1) is wound around a groove (21) on the circumference of a sheave (17). The frame (18) houses the sheave (17). The tension pulley (15) is displaced in the vertical direction in accordance with the operation of the elevator (1). The contact portion (27) is in contact with the inner surface of the groove (21) from above. The support arm (26) supports the contact section (27) at one end, thereby suppressing the contact section (27) from moving in the circumferential direction of the sheave (17) as the sheave (17) rotates. The mounting portion (25) is provided at the other end of the support arm (26). The mounting portion (25) is mounted to the frame (18) by sandwiching the outer surface of the frame (18) from the outside.
Description
Technical Field
The present invention relates to a cleaning device for a tension pulley of an elevator.
Background
Patent document 1 discloses an example of a sheave cleaning device for an elevator hoisting machine. The cleaning device is mounted on a base below a sheave of a hoisting machine.
Documents of the prior art
Patent document
Patent document 1: japanese Kokai publication Hei-5-42275
Disclosure of Invention
Problems to be solved by the invention
A tension pulley of an elevator, around which a speed governor rope is wound, is displaced in the vertical direction in accordance with the operation of the elevator. However, when the cleaning device of patent document 1 is mounted below the tension pulley, the cleaning device does not follow the vertical displacement of the tension pulley. Therefore, this cleaning device cannot be applied to cleaning of the tension pulley.
The invention aims to provide a cleaning device applicable to a tension pulley of an elevator.
Means for solving the problems
The cleaning device for a tension pulley of an elevator of the present invention comprises: a contact portion that contacts an inner surface of the groove from above in a tension pulley, the tension pulley having a sheave and a frame that houses the sheave, and the tension pulley being displaced in the vertical direction in accordance with the operation of the elevator, a governor rope of the elevator being wound around the groove on the circumference of the sheave from both the left and right sides; a support arm that supports the contact portion at one end, thereby suppressing the contact portion from moving in the circumferential direction of the sheave; and a mounting portion provided at the other end of the support arm and mounted to the frame by sandwiching an outer surface of the frame from the outside on the left or right side of the frame.
Effects of the invention
According to the present invention, the cleaning device includes the contact portion, the support arm, and the mounting portion. The tension pulley has a sheave and a frame. A governor rope of an elevator is wound around a groove on the circumference of a sheave. The frame accommodates a sheave. The tension pulley is displaced in the up-down direction along with the operation of the elevator. The contact portion contacts the inner surface of the groove from above. The support arm supports the contact portion at one end, thereby suppressing the contact portion from moving in the circumferential direction of the sheave with rotation of the sheave. The mounting part is arranged at the other end of the supporting arm. The mounting portion is mounted to the frame by sandwiching an outer surface of the frame from the outside. Thus, the cleaning device can be applied to a tension pulley of an elevator.
Drawings
Fig. 1 is a configuration diagram of an elevator according to embodiment 1.
Fig. 2 is a perspective view of the tension pulley according to embodiment 1.
Fig. 3 is a plan view of the cleaning device of embodiment 1.
Fig. 4 is a front view of the cleaning device according to embodiment 1.
Fig. 5 is a right side view of the cleaning device of embodiment 1.
Fig. 6 is a perspective view of a tension pulley to which the cleaning device of embodiment 1 is attached.
Fig. 7 is a front view of the cleaning device according to embodiment 2.
Detailed Description
The embodiments for carrying out the present invention will be described with reference to the drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals, and overlapping description is appropriately simplified or omitted.
Embodiment mode 1
Fig. 1 is a configuration diagram of an elevator according to embodiment 1.
The elevator 1 is installed in a building 2. The building 2 includes a plurality of floors. In the elevator 1, a hoistway 3 penetrates each of a plurality of floors of a building 2. In the elevator 1, a plurality of landings 4 are provided on a plurality of floors of the building 2, respectively. In the elevator 1, a machine room 5 is provided in an upper part of a hoistway 3. In the elevator 1, a pit 6 is provided at a lower end of a hoistway 3.
The elevator 1 includes a hoisting machine 7, a main rope 8, a car 9, and a counterweight 10. The hoisting machine 7 is installed in the machine room 5, for example. The hoisting machine 7 includes a motor and a sheave. The motor of the hoisting machine 7 is a device that generates a driving force. The sheave of the hoisting machine 7 is rotated by a driving force generated by a motor. The main ropes 8 are wound around a sheave of the hoisting machine 7. The main ropes 8 move following the rotation of the sheave of the hoisting machine 7. One end of the main rope 8 is provided to the car 9, for example. The other end of the main rope 8 is provided to the counterweight 10, for example. The car 9 is a device that follows the movement of the main rope 8 and travels in the vertical direction inside the hoistway 3, thereby transporting a user or the like between a plurality of floors of the building 2. The car 9 includes a car door 11. The car door 11 is a device that opens and closes when the car 9 stops at any of a plurality of floors so that a user or the like can get on and off the car 9. The counterweight 10 is provided in the hoistway 3. The counterweight 10 is a device that balances the load applied to both sides of the sheave of the hoisting machine 7 via the main ropes 8 with the car 9.
The elevator 1 includes a plurality of landing doors 12. The landing doors 12 are provided in the landings 4. Each of the landing doors 12 is a device that opens and closes in conjunction with the car door 11 when the car 9 stops at the floor where the landing door 12 is installed.
The elevator 1 includes a governor 13, a governor rope 14, and a tension sheave 15. The governor 13 is installed in the machine room 5, for example. The speed governor 13 is a device that limits the speed of the car 9 so that the car 9 does not run at an excessively high speed. The speed governor 13 includes a sheave. The governor rope 14 is wound around a sheave of the governor 13. Both ends of the governor rope 14 are attached to the car 9, for example.
The tension pulley 15 is provided in the pit 6, for example. In the pit 6, a pair of tensioning sheave rails 16 are provided. The tensioner 15 is disposed between a pair of tensioner guide rails 16. The tension sheave 15 is a device that applies tension to the governor rope 14. The tension sheave 15 includes a sheave 17 and a frame 18. The sheave 17 is a device that winds the governor rope 14 so as to apply tension to the governor rope 14. In this example, the rotation axis of the sheave 17 is oriented in the front-rear direction. Between the pair of tensioning sheave guide rails 16, the sheave 17 is hung on the governor rope 14, whereby the tensioning sheave 15 is suspended from the floor surface of the pit 6. The frame 18 houses the sheave 17. The frame 18 is provided with a weight 19 and a guide shoe 20. The weight 19 is disposed below the sheave 17. The weight 19 is a device that applies tension to the governor rope 14 via the sheave 17 by the weight of the weight 19. The guide shoes 20 are provided on both left and right sides of the frame 18 to displace the tension sheave 15 in the up-down direction along the pair of tension sheave guide rails 16.
In normal operation of the elevator 1, the governor rope 14 moves in the vertical direction as the car 9 ascends and descends. The sheave 17 of the governor 13 rotates in accordance with the movement of the governor rope 14. When the rotation speed of the sheave 17 is greater than a predetermined rotation speed, the governor 13 brakes the rotation of the sheave 17 to limit the speed of the operation of the car 9. The sheave 17 rotates with the movement of the governor rope 14. The sheave 17 receives a force in the vertical direction from the governor rope 14 that moves in the vertical direction. Therefore, the tension sheave 15 is displaced in the vertical direction along the pair of tension sheave guide rails 16 as the car 9 ascends and descends.
Fig. 2 is a perspective view of the tension pulley according to embodiment 1.
Fig. 2 shows the rotation direction R of the sheave 17 when the car 9 is raised.
The sheave 17 of the tension pulley 15 has a groove 21 on the outer circumference of a circle. The governor rope 14 is wound around the grooves 21 of the sheave 17 from both the left and right sides.
The frame 18 of the tension sheave 15 includes an upper cover 23 and a pair of rope guides 22. A pair of rope guides 22 are provided on the left and right sides of the frame 18, respectively. One of the pair of rope guides 22 is provided in parallel with the governor rope 14 pulled out from the sheave 17. The other of the pair of rope guides 22 is provided in parallel with the governor rope 14 wound around the sheave 17. The upper cover 23 is provided across the upper ends of the pair of rope guides 22. The upper cover 23 is provided above the sheave 17.
In this example, the left rope guide 22 covers a portion D of the governor rope 14 that is wound downward when the car 9 ascends from the left side. The right rope guide 22 covers a portion U of the governor rope 14 that is pulled upward when the car 9 ascends from the right side.
Here, during the operation of the elevator 1, dust, oil of the governor rope 14, or the like may be fixed as foreign matter to the groove 21 of the sheave 17. Foreign matter fixed to the groove 21 of the sheave 17 adheres to the governor rope 14. Foreign matter adhering to the governor rope 14 may be carried to the governor 13. At this time, the foreign matter carried to the governor 13 comes into contact with the governor 13, and the governor 13 may brake the speed of the car 9 that normally travels. Therefore, it is necessary to remove foreign matters fixed to the groove 21 of the sheave 17. An operator who performs the cleaning operation of the sheave 17 removes foreign matter that has adhered to the groove 21 of the sheave 17 using a cleaning device 24 that is not shown in fig. 2.
Next, the structure of cleaning device 24 according to embodiment 1 will be described with reference to fig. 3 to 5.
Fig. 3 is a plan view of the cleaning device according to embodiment 1.
The cleaning device 24 includes a mounting portion 25, a support arm 26, and a contact portion 27. The mounting portion 25 is an コ -shaped portion having an opening on the left side when viewed from above. The mounting portion 25 has mounting holes 28 on three surfaces of the front surface, the right side surface, and the rear surface, respectively. The support arm 26 extends from the right side surface to the left side of the mounting portion 25. The attachment portion 25 is provided on the front side of the cleaning device 24. The mounting portion 25 and the support arm 26 are formed by sheet metal working, for example. The contact portion 27 is provided on the surface on the right side at the left end of the support arm 26. The contact portion 27 is detachably attached to the support arm 26 by, for example, screw fastening. The contact portion 27 is formed by a rubber member such as reinforced rubber.
The mounting portion 25 includes a plurality of adjusting portions 29. Each of the plurality of adjustment portions 29 includes a bolt 30 and a nut 31. The nut 31 is an example of a pressing portion. The bolt 30 is inserted through any one of the plurality of mounting holes 28 of the mounting portion 25 so that the tip end thereof faces inward. The front end of the bolt 30 is the front end of the adjusting portion 29. That is, the plurality of adjustment units 29 are arranged in different directions. The axial position of the tip of the bolt 30 is variable according to the rotation. The nut 31 is provided at the tip of the bolt 30 inside the mounting portion 25.
Fig. 4 is a front view of the cleaning device according to embodiment 1.
Fig. 4 does not show the plurality of adjustment units 29.
The support arm 26 extends upward from the right side surface of the mounting portion 25. The support arm 26 is bent at a right angle to the left above the mounting portion 25. The support arm 26 is bent obliquely downward in the left direction of the mounting portion 25. The support arm 26 is bent downward at the left end.
Fig. 5 is a right side view of cleaning device 24 according to embodiment 1.
Fig. 5 shows a state where the contact portion 27 is removed from the distal end of the support arm 26. In fig. 5, a section of the sheave 17 including the rotation shaft is shown. Fig. 5 does not show the plurality of adjustment units 29.
The groove 21 of the sheave 17 is provided so that the inner side surface thereof opens outward at an angle θ 1.
The contact portion 27 is formed so as to narrow in width in the front-rear direction from above to below. At this time, the lower end of the contact portion 27 is opened upward at an angle θ 2 at a portion contacting the inner surface of the groove 21. At this time, the angle θ 2 is smaller than the angle θ 1.
Next, a method of cleaning the tension pulley 15 by the cleaning device 24 of embodiment 1 will be described with reference to fig. 6.
Fig. 6 is a perspective view of a tension pulley to which the cleaning device of embodiment 1 is attached.
In this example, the cleaning operation is performed by two workers, i.e., a worker who operates the car 9 and a worker who removes foreign matter from the groove 21 of the sheave 17 in the pit 6.
First, the operator who operates the car 9 moves the car 9 to, for example, the floor immediately above the lowest floor. This ensures a space for cleaning work by the worker in the pit 6.
Then, the worker working on the pit 6 removes the upper cover 23 of the tension pulley 15.
Then, the worker mounts the cleaning device 24 to the frame 18, for example, as follows. Here, fig. 6 shows tensioning sheave 15 with upper cover 23 removed and cleaning device 24 attached.
First, the operator inserts the cleaning device 24 into the gap between the right rope guide 22 and the tension sheave guide 16 from above so that the right inner surface of the cleaning device 24 faces the right outer surface of the right rope guide 22 and extends along the right outer surface of the right rope guide 22. Here, the right rope guide 22 covers a portion U of the governor rope 14 that is pulled upward when the car 9 ascends from the right side.
Next, the operator inserts the contact portion 27 into the groove 21 of the sheave 17 from above. At this time, the operator brings the contact portion 27 into contact with the right side of the top portion T of the sheave 17. The operator adjusts the cleaning device 24 between the top portion T of the sheave 17 and the right rope guide 22 to a position where the contact portion 27 is in contact with the groove 21 without a gap. Here, an angle θ 2 at which the lower end of the contact portion 27 opens upward is smaller than an angle θ 1 at which the groove 21 opens outward. Since the contact portion 27 is inserted into the groove 21 from above, the contact portion 27 is in contact with the groove 21 without a gap at a position on the right side of the top portion T of the sheave 17.
Next, the operator fastens the bolt 30 to bring the front ends of the plurality of adjusting portions 29 close to the outer surface of the right rope guide 22, thereby fixing the cleaning device 24 at the adjusted position. The front ends of the plurality of adjusting portions 29 contact the outer surface of the right rope guide 22 from different directions. The adjusting portion 29 sandwiches the outer surface of the right rope guide 22 from three directions, i.e., the front direction, the right direction, and the rear direction. The right rope guide 22 is sandwiched by the adjusting portions 29, and the mounting portion 25 is mounted to the frame 18. In this example, the mounting portion 25 does not contact the inner surface of the frame 18.
Next, the operator moves the nuts 31 of the respective adjusting portions 29 to the front ends until the nuts come into contact with the outer surface of the right rope guide 22. As described above, the worker mounts cleaning device 24 to frame 18.
The operator located in the pit 6 then communicates with the operator who is operating the car 9. The operator who receives the contact moves the car 9 upward. As the car 9 ascends, the sheave 17 rotates. The support arm 26 supports the contact portion 27 inside the groove 21. Therefore, the contact portion 27 is suppressed from moving in the circumferential direction of the sheave 17 with the rotation of the sheave 17. On the other hand, the foreign matter fixed to the groove 21 moves in the circumferential direction of the sheave 17 with the rotation of the sheave 17. Therefore, the foreign matter is blocked by the contact portion 27, thereby being scraped to the outside of the groove 21. Here, the operator who moves the car 9 can raise the car 9 at a speed at which the operator who is located in the pit 6 can visually confirm the scraping of the foreign matter by the contact portion 27.
When the scraped foreign matter accumulates on the surface of the contact portion 27, the operator located in the pit 6 communicates with the operator who moves the car 9. The operator who receives the contact stops the ascending operation of the car 9. The operator located in pit 6 removes cleaning apparatus 24 from frame 18. The worker wipes off foreign matter accumulated in the contact portion 27. The worker again mounts cleaning device 24 to frame 18.
The operator located in the pit 6 then communicates with the operator who is operating the car 9. The operator who has received the contact starts the raising operation of the car 9 again. The above steps are repeated by two workers until the sheave 17 rotates one revolution.
As described above, the cleaning device 24 according to embodiment 1 includes the contact portion 27, the support arm 26, and the attachment portion 25. The tension sheave 15 has a sheave 17 and a frame 18. The governor rope 14 of the elevator 1 is wound around a groove 21 on the circumference of the sheave 17. The frame 18 houses the sheave 17. The tension pulley 15 is displaced in the vertical direction in accordance with the operation of the elevator 1. The contact portion 27 contacts the inner surface of the groove 21 from above. The support arm 26 supports the contact portion 27 at one end, thereby suppressing the contact portion 27 from moving in the circumferential direction of the sheave 17 with the rotation of the sheave 17. The mounting portion 25 is provided at the other end of the support arm 26. The attachment portion 25 is attached to the frame 18 by sandwiching the outer surface of the frame 18 from the outside.
Here, when the foreign matter in the groove 21 of the sheave 17 is removed by manual work in a state where the car 9 of the elevator 1 is stopped, it is necessary to adjust the position of the sheave 17 a plurality of times so that the position of the sheave 17 to be cleaned is exposed upward. For example, when two workers are in contact and adjust the position of the sheave 17 by adjusting the position of the car 9, the worker who operates the car 9 cannot directly confirm the sheave 17. Therefore, the movement of the car 9 in the vertical direction needs to be repeated. On the other hand, the cleaning device 24 removes foreign matter in the groove 21 of the sheave 17 by rotation of the sheave 17 accompanying movement of the car 9 of the elevator 1. Since the cleaning device 24 continuously removes foreign matter by the rotation of the sheave 17, it is not necessary to adjust the position of the car 9 in accordance with the position of the sheave 17 to be cleaned. Therefore, foreign matters in the groove 21 of the sheave 17 are removed only by the operation of moving up and stopping the car 9. Therefore, the cleaning operation of the tension pulley 15 becomes easy.
Further, in the position adjustment of the sheave 17 when the foreign matter in the groove 21 of the sheave 17 is removed in a state where the car 9 of the elevator 1 is stopped, the governor rope 14 wound around the tension sheave 15 may be loosened to rotate the sheave 17. In this case, a large device such as a jack for loosening the governor rope 14 needs to be brought into the pit 6. On the other hand, the cleaning device 24 is a small device that can be fixed to the rope guide 22. Therefore, it is not necessary to bring a large-sized device into the pit 6. Therefore, the cleaning operation of the tension pulley 15 becomes easy.
The frame 18 is provided with a rope guide 22. The rope guide 22 covers a portion U of the governor rope 14 that is pulled upward when the car 9 of the elevator 1 rises. In this case, the attachment portion 25 is attached to the frame 18 by sandwiching the outer surface of the rope guide 22 from the outside.
The operator performs cleaning work on the pit 6. Therefore, during the cleaning operation, the car 9 moves to ascend away from the pit 6. At this time, the operator located in the pit 6 performs work near the portion U of the governor rope 14 pulled out from the sheave 17. The worker does not need to approach the portion D of the governor rope 14 wound around the sheave 17. Therefore, the safety of the cleaning operation is improved.
The contact portion 27 is in contact with the inner surface of the groove 21 between the top portion T of the sheave 17 and the rope guide 22. The rope guide 22 covers a portion U of the governor rope 14 that is pulled upward when the car 9 of the elevator 1 ascends.
Accordingly, the force received by the rotation of the sheave 17 acts in the direction in which the cleaning device 24 is detached to the outside of the frame 18 at the contact portion 27. Thus, even when an abnormal force is applied to the cleaning device 24, the cleaning device 24 and the equipment of the elevator 1 are less likely to be damaged.
An angle θ 2 of a portion of the lower end of the contact portion 27 that contacts the inner surface of the groove 21 is smaller than an angle θ 1 of the inner surface of the groove 21 in a cross section including the rotation axis of the sheave 17.
The contact portion 27 is inserted into the groove 21 of the sheave 17 from above. Therefore, the shape of the contact portion 27 coincides with the shape of the inner surface of the groove 21 at a position laterally offset from the top portion T. This enables the contact portion 27 to more reliably remove foreign matter at a position laterally offset from the top portion T.
The contact portion 27 is detachable from the support arm 26.
Thus, the contact portion 27 having an appropriate shape can be replaced and used in accordance with the diameter of the governor rope 14, the diameter of the sheave 17, the shape of the groove 21, and the like.
Also, the contact portion 27 is formed of a rubber member having rubber elasticity.
The contact portion 27 is more closely attached to the inner surface of the groove 21 by deformation due to rubber elasticity. This enables the contact portion 27 to more reliably remove foreign matter. Further, since the contact portion 27 is deformed by rubber elasticity, it is possible to reduce sliding sound that may be generated by friction with the sheave 17.
The mounting portion 25 is provided with a plurality of adjusting portions 29. The axial front ends of the plurality of adjustment portions 29 face the outer surface of the frame 18 from different directions. The axial position of the tip of each of the plurality of adjustment portions 29 is variable. The front ends of the plurality of adjustment portions 29 are in contact with the outer surface of the frame 18, whereby the mounting portion 25 is mounted to the frame 18.
The mounting portion 25 is mounted to the frame 18 by a force of pressing the outer surface of the frame 18. Therefore, when an abnormal force is applied to the sheave 17 housed in the frame 18, the cleaning device 24 is easily detached from the outer surface of the frame 18. Thus, even when an abnormal force is applied to the cleaning device 24, the cleaning device 24 and the equipment of the elevator 1 are less likely to be damaged. In addition, the mounting position of the mounting portion 25 can be easily adjusted.
Each of the plurality of adjustment portions 29 includes a pressing portion at the tip. The pressing portion increases the contact area of the adjusting portion 29 with the outer surface of the frame 18.
Thereby, the mounting portion 25 is mounted with a larger contact area. Therefore, cleaning device 24 is more stably attached to frame 18 in the normal state.
The contact portion 27 may be attached to the support arm 26 by adhesion or tape fixing. Further, the contact portion 27 may be formed integrally with the support arm 26. In this case, the contact portion 27 is formed of the same material as the support arm 26, such as a steel plate.
Furthermore, cleaning device 24 may also include a drop prevention unit. The fall prevention unit includes, for example, a rope having one end coupled to the mounting hole 28. The fall prevention unit includes a clip at the other end of the string. The clip is attached to the tension sheave rail 16, for example. Thus, even when cleaning device 24 is detached from frame 18, cleaning device 24 is less likely to fall down to pit 6 and damage other equipment and the like.
The support arm 26 and the mounting portion 25 may be separable from each other. At this time, the support arm 26 and the mounting portion 25 are assembled by, for example, fastening with screws. The mounting portion 25 and the support arm 26 may have a mechanism for adjusting the position of the contact portion 27. The mechanism may be, for example, a long hole at a screw fastening portion of the support arm 26 and the mounting portion 25.
Embodiment mode 2
In embodiment 2, points different from the example disclosed in embodiment 1 will be described in detail. As for the features not described in embodiment 2, any features of the example disclosed in embodiment 1 may be adopted.
Fig. 7 is a front view of the cleaning device according to embodiment 2.
The cleaning device 24 includes a tray 32. The tray 32 is, for example, a box-shaped device whose right side surface is open. The tray 32 is provided on the left side of the contact portion 27. The tray 32 is supported by the support arms 26. The bottom portion of the right side of the tray 32 is provided below the upper end of the contact portion 27. The support arm 26 has an opening or a cutout communicating from the upper end of the contact portion 27 to the bottom of the tray 32.
In the cleaning operation of the tension sheave 15, the contact portion 27 of the cleaning device 24 removes foreign matter from the groove 21 of the sheave 17. At this time, the removed foreign matter moves to the inclined surface on the right side of the contact portion 27. The foreign matter moved to the contact portion 27 is pushed up along the inclined surface of the contact portion 27 by the foreign matter newly removed from the groove 21. The pushed-up foreign matter is guided from the contact portion 27 to the tray 32. The tray 32 receives the guided foreign matter.
As described above, in the cleaning device 24 according to embodiment 2, the surface of the contact portion 27 on the side facing the rope guide 22 is inclined upward inside the groove 21. The rope guide 22 covers a portion U of the governor rope 14 that is pulled upward when the car 9 of the elevator 1 ascends.
Thereby, the foreign matter removed from the groove 21 is guided upward by the inclined surface of the contact portion 27. Therefore, the foreign matter removed from the groove 21 does not overflow to the front and rear of the contact portion 27. Therefore, the worker can easily wipe off the foreign matter adhering to the contact portion 27.
The contact portion 27 is formed to have a thickness in the left-right direction that increases from above to below the contact portion 27.
This makes it difficult for the lower end of the contact portion 27 to bend in the rotation direction of the sheave 17. Therefore, the contact portion 27 can more reliably remove the foreign matter. Moreover, the inclined surface of the contact portion 27 is easily formed.
The cleaning device 24 is provided with a tray 32. The tray 32 is provided on the contact portion 27 on the top T side of the sheave 17. The tray 32 receives the foreign matter removed from the groove 21 by the contact portion 27.
This causes foreign matter removed from the groove 21 to accumulate on the tray 32. Therefore, the operator can reduce the frequency of wiping off foreign matter adhering to the contact portion 27. This reduces the work load of the cleaning work of the tension pulley 15. Further, contamination of the periphery of the tension pulley 15 by foreign matter removed from the groove 21 can be suppressed.
The contact portion 27 may have a constant thickness in the vertical direction. At this time, the contact portion 27 may be supported by the support arm 26 with the lower end portion inclined in the downward right direction. The support arm 26 may be inclined so that the left end portion thereof faces the lower right direction.
Description of the reference symbols
1: an elevator; 2: a building; 3: a hoistway; 4: a landing; 5: a machine room; 6: a pit; 7: a traction machine; 8: a main rope; 9: a car; 10: counterweight; 11: a car door; 12: a landing door; 13: a speed limiter; 14: a governor rope; 15: a tension wheel; 16: a tension pulley guide rail; 17: a sheave; 18: a frame; 19: a weight block; 20: a guide shoe; 21: a groove; 22: a rope guide; 23: an upper cover; 24: a cleaning device; 25: an installation part; 26: a support arm; 27: a contact portion; 28: mounting holes; 29: an adjustment part; 30: a bolt; 31: a nut; 32: a tray.
Claims (18)
1. A cleaning device for a tension pulley of an elevator is provided with:
a contact portion that contacts an inner surface of a groove from above in a tension sheave that has a sheave and a frame that houses the sheave, and that is displaced in the vertical direction as the elevator travels, a governor rope of the elevator being wound around the groove on the circumference of the sheave from both the left and right sides;
a support arm that supports the contact portion at one end, thereby suppressing the contact portion from moving in a circumferential direction of the sheave; and
a mounting portion provided at the other end of the support arm and mounted to the frame by sandwiching an outer surface of the frame from the outside on the left or right side of the frame,
in the case where the frame includes a rope guide, the attachment portion is attached to the frame by sandwiching an outer surface of the rope guide from the outside, and the rope guide covers a portion of the governor rope that is pulled out upward when a car of the elevator ascends.
2. The cleaning device for a tension pulley of an elevator according to claim 1, wherein,
the contact portion is in contact with an inner surface of the groove between a top of the sheave and the rope guide.
3. The cleaning device for a tension pulley of an elevator according to claim 2, wherein,
an angle of a portion of a lower end portion of the contact portion that contacts an inner side surface of the groove is smaller than an angle formed by two inner side surfaces of the groove in a cross section including the rotation shaft of the sheave.
4. The cleaning device for a tension pulley of an elevator according to any one of claims 1 to 3, wherein,
a surface of the contact portion on a side facing the rope guide is inclined upward inside the groove.
5. The cleaning device for a tension pulley of an elevator according to claim 4, wherein,
the thickness of the contact portion in the left-right direction is formed to be thicker from the upper side to the lower side of the contact portion.
6. The cleaning device for a tension pulley of an elevator according to claim 4, wherein,
the cleaning device for the tension pulley of the elevator is provided with a tray which is arranged on one side of the contact part close to the top of the rope pulley and receives foreign matters removed from the groove by the contact part.
7. The cleaning device for the tension pulley of an elevator according to any one of claims 1 to 3, wherein,
the contact portion is attachable to and detachable from the support arm.
8. The cleaning device for a tension pulley of an elevator according to any one of claims 1 to 3, wherein,
the contact portion is formed of a rubber member having rubber elasticity.
9. A cleaning device for a tension pulley of an elevator is provided with:
a contact portion that contacts an inner surface of a groove from above in a tension sheave that has a sheave and a frame that houses the sheave, and that is displaced in the vertical direction as the elevator travels, a governor rope of the elevator being wound around the groove on the circumference of the sheave from both the left and right sides;
a support arm that supports the contact portion at one end, thereby suppressing the contact portion from moving in a circumferential direction of the sheave; and
a mounting portion provided at the other end of the support arm and mounted to the frame by sandwiching an outer surface of the frame from the outside on the left or right side of the frame,
the mounting portion includes a plurality of adjusting portions, axial ends of the adjusting portions are oriented toward an outer surface of the frame from different directions, and axial positions of the axial ends are variable, and the mounting portion is mounted to the frame by the axial ends of the adjusting portions being in contact with the outer surface of the frame.
10. The cleaning device for the tension pulley of an elevator according to claim 9, wherein,
the plurality of adjusting parts are respectively provided with a pressing part at the front end, and the pressing parts increase the contact area between the adjusting parts and the outer surface of the frame.
11. The cleaning device for a tension pulley of an elevator according to claim 9 or 10, wherein,
in the case where the frame includes a rope guide, the attachment portion is attached to the frame by sandwiching an outer surface of the rope guide from the outside, and the rope guide covers a portion of the governor rope that is pulled out upward when a car of the elevator ascends.
12. The cleaning device for a tension pulley of an elevator according to claim 11, wherein,
the contact portion is in contact with an inner surface of the groove between a top of the sheave and the rope guide.
13. The cleaning device for a tension pulley of an elevator according to claim 12, wherein,
an angle of a portion of a lower end portion of the contact portion that contacts an inner side surface of the groove is smaller than an angle formed by two inner side surfaces of the groove in a cross section including the rotation shaft of the sheave.
14. The cleaning device for a tension pulley of an elevator according to claim 11, wherein,
a surface of the contact portion on a side facing the rope guide is inclined upward inside the groove.
15. The cleaning device for a tension pulley of an elevator according to claim 14, wherein,
the thickness of the contact portion in the left-right direction is formed to be thicker from the upper side to the lower side of the contact portion.
16. The cleaning device for a tension pulley of an elevator according to claim 14, wherein,
the cleaning device for the tension pulley of the elevator is provided with a tray which is arranged on one side of the contact part close to the top of the rope pulley and receives foreign matters removed from the groove by the contact part.
17. The cleaning device for a tension pulley of an elevator according to claim 9 or 10, wherein,
the contact portion is attachable to and detachable from the support arm.
18. The cleaning device for a tension pulley of an elevator according to claim 9 or 10, wherein,
the contact portion is formed of a rubber member having rubber elasticity.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019008675A JP6809545B2 (en) | 2019-01-22 | 2019-01-22 | Elevator tension car cleaning device |
| JP2019-008675 | 2019-01-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111453583A CN111453583A (en) | 2020-07-28 |
| CN111453583B true CN111453583B (en) | 2022-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910738886.2A Active CN111453583B (en) | 2019-01-22 | 2019-08-12 | Cleaning device for tension pulley of elevator |
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| Country | Link |
|---|---|
| JP (1) | JP6809545B2 (en) |
| CN (1) | CN111453583B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7133135B1 (en) * | 2021-03-15 | 2022-09-08 | フジテック株式会社 | Elevator and pulley device |
| CN117585557A (en) * | 2024-01-18 | 2024-02-23 | 赣州市瑞杰电梯设备有限公司 | Elevator speed limiter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015168525A (en) * | 2014-03-07 | 2015-09-28 | 三菱電機ビルテクノサービス株式会社 | Cleaning jig for governor rope tension pulley |
| JP2017001858A (en) * | 2015-06-15 | 2017-01-05 | 三菱電機ビルテクノサービス株式会社 | Coating-material coating device of elevator sheave |
| CN108750872A (en) * | 2018-08-28 | 2018-11-06 | 通力电梯有限公司 | Greasy filth cleaning device and elevator including it |
| CN108861919A (en) * | 2017-05-10 | 2018-11-23 | 株式会社日立大厦系统 | The pulley of elevator cleans fixture |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61130578U (en) * | 1985-02-01 | 1986-08-15 | ||
| JPH02135588U (en) * | 1989-04-12 | 1990-11-09 |
-
2019
- 2019-01-22 JP JP2019008675A patent/JP6809545B2/en active Active
- 2019-08-12 CN CN201910738886.2A patent/CN111453583B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015168525A (en) * | 2014-03-07 | 2015-09-28 | 三菱電機ビルテクノサービス株式会社 | Cleaning jig for governor rope tension pulley |
| JP2017001858A (en) * | 2015-06-15 | 2017-01-05 | 三菱電機ビルテクノサービス株式会社 | Coating-material coating device of elevator sheave |
| CN108861919A (en) * | 2017-05-10 | 2018-11-23 | 株式会社日立大厦系统 | The pulley of elevator cleans fixture |
| CN108750872A (en) * | 2018-08-28 | 2018-11-06 | 通力电梯有限公司 | Greasy filth cleaning device and elevator including it |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2020117339A (en) | 2020-08-06 |
| CN111453583A (en) | 2020-07-28 |
| JP6809545B2 (en) | 2021-01-06 |
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