JP2016204137A - Foreign matter discharge device for elevator door sill groove - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foreign matter discharge device for an elevator door sill groove capable of reducing the occurrence frequency of failures of an elevator door by discharging foreign matters from sill grooves not through door shoes.SOLUTION: A foreign matter discharge device 50 for an elevator door sill groove prevents foreign matters from entering sill grooves 42, 44 where door shoes 38, 39 attached to a lower end part of a landing door 23 slide. The device comprises: roller units 51, 54 installed outside both end parts of the sill grooves 42, 44 in a longitudinal direction; and discharge belts 56, 58 which are formed so as to cover a position lower than a top face of a sill 40 of the sill grooves 42, 44, and reciprocate with respect to the sill grooves 42, 44 to discharge foreign matters to the outside of the sill grooves 42, 44 while being interlocked with the opening/closing operation of the landing door 23.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a foreign matter discharging device for an elevator door sill groove, and more particularly to a device for preventing foreign matter from entering a sill groove.

  In general, the elevator doors on the landing side and the car side are both hung on a hanger rail arranged just above the entrance and exit, and the door shoe attached to the lower end is configured to open and close by sliding the sill groove Has been. In such elevators, if foreign objects such as pebbles get into the sill groove, foreign objects may get caught in the elevator door when opening and closing, causing a failure, so a through hole is provided in the sill groove to drop the foreign object into the hoistway. There are many elevators.

  In Patent Document 1, a through-hole for discharging foreign matter is provided in the center of the sill groove, and the door shoe enters the sill groove in accordance with the door closing operation of the elevator door. An elevator that prevents a user's fallen object from falling into the hoistway from the through hole by a belt that reciprocates in the sill groove in conjunction with the opening / closing operation of the elevator door when the door is open. A foreign matter discharge device for a door is disclosed.

JP 2010-260699 A

  In the elevator door foreign matter discharging apparatus disclosed in Patent Document 1, foreign matter such as pebbles that have entered the sill groove when the door is opened is pushed out through the sill groove to the through hole by the door shoe and discharged. There is a problem in that foreign objects are easily caught between the elevator doors and the elevator door is likely to break down.

  An object of the present invention is to provide a foreign matter discharge device for an elevator door sill groove that can reduce the frequency of failure of an elevator door by discharging foreign matter from the sill groove without using a door shoe.

  A foreign matter discharging device for an elevator door sill groove according to the present invention is a device for preventing foreign matter from being mixed into a sill groove on which a door shoe provided at a lower end portion of an elevator door slides, and both end portions in the longitudinal direction of the sill groove A roller provided rotatably on the outside of the sill groove and an opening for inserting the door shoe into the sill groove is formed so as to cover the position below the sill groove upper surface. And a discharge belt that reciprocates with respect to the sill groove in conjunction with the opening / closing operation of the elevator door and discharges foreign matter to the outside of the sill groove.

  In the elevator door sill groove foreign matter discharging apparatus according to the present invention, it is preferable that the apparatus further includes a cleaning brush disposed so as to contact the belt and a dust box disposed so as to surround the cleaning brush.

  In the foreign matter discharging apparatus for an elevator door sill groove according to the present invention, both end portions in the width direction of the belt are inserted in guide grooves provided on both side surfaces of the sill groove so as to be movable along the longitudinal direction of the sill groove. Is preferred.

  According to the foreign matter discharging apparatus for an elevator door sill groove according to the present invention, foreign matter such as pebbles entering the sill groove is discharged out of the sill groove by a discharge belt that reciprocally moves along the opening and closing operation of the elevator door. The foreign material can be discharged from the threshold groove without using the door shoe. As a result, it is difficult for foreign matter to be caught between the door shoe and the sill groove, and the frequency of failure in the elevator door can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the whole elevator structure provided with the foreign material discharge device of the elevator door sill groove which is embodiment which concerns on this invention. It is a figure which shows the structure by the side of the hoistway of the landing door in the door closed state shown in FIG. It is a figure which shows the state at the time of the door opening of the landing door shown in FIG. It is a figure which shows the cross-sectional structure of the AA cross section shown in FIG. It is the elements on larger scale which show the cross-sectional structure around the sill groove | channel included in FIG. It is a figure which shows the whole structure of the foreign material discharge device of the elevator door sill groove | channel contained in FIG. It is a figure which shows the structure of the door shoe in the BB cross section shown in FIG. 6, a threshold, and a discharge belt. It is a figure which shows the structure of the discharge belt and dust box seen from the C direction shown in FIG. It is a figure which shows the structure of the modification of the foreign material discharge device of the elevator door sill groove which is embodiment of this invention.

  Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In this description, specific shapes, materials, numerical values, directions, and the like are examples for facilitating the understanding of the present invention, and can be appropriately changed according to the application, purpose, specification, and the like. In addition, when a plurality of embodiments and modifications are included in the following, it is assumed from the beginning that these characteristic portions are used in appropriate combinations.

  FIG. 1 is a diagram showing an overall configuration of an elevator 10 to which a foreign matter discharging apparatus for an elevator door sill groove according to an embodiment of the present invention is applied. In FIG. 1, illustration of guide rails for supporting the car and the counter weight so as to be movable in the vertical direction is omitted.

  The elevator 10 includes a hoisting machine 12, a passenger car 14, a counter weight 16, a main rope 18, and a landing door 23. In the illustrated embodiment, the hoisting machine 12 is disposed in a pit P that is the lower end side of the hoistway S. The hoisting machine 12 raises and lowers the car 14 and the counter weight 16 relative to each other via the main rope 18.

  The passenger car 14 has a function of moving up and down with a person or luggage, and the suspension car 14 a is provided on the ceiling of the passenger car 14 so as to bridge the main rope 18. The open / close door 14 b of the car 14 is a single-open door and is provided on the front side facing the landing door 23.

  The counter weight 16 is a counterweight for reducing a load when the hoisting machine 12 lifts the car 14.

  One end of the main rope 18 is fixed to the ceiling R of the hoistway S with a bolt or the like, passes through the suspension wheel 14a of the car 14, and then passes through the return wheel 18a of the ceiling R to the hoisting machine 12 positioned below. It is stretched over. The other end of the main rope 18 is also bridged from the hoisting machine 12 to the suspension wheel 16a of the lower counterweight 16 via the return wheel 18b of the ceiling R, and then fixed to the ceiling R of the hoistway S with bolts or the like. ing.

  In the present embodiment, the elevator 10 having a configuration in which the hoisting machine 12 is disposed in the pit P is described as an example, but the present invention is not limited to this. For example, the present invention can also be applied to an elevator in which the hoisting machine 12 is arranged in a machine room provided immediately above the hoistway S.

  FIG. 2 is a diagram showing a configuration viewed from the hoistway S in the door-closed state of the landing door 23 shown in FIG. FIG. 3 is a diagram showing a configuration when the landing door 23 shown in FIG. 2 is opened. FIG. 4 is a diagram showing a cross section taken along line AA shown in FIG. For example, a single door type landing door 23 whose door closing direction is the right direction when viewed from the landing H is installed at the elevator entrance 20 of each floor.

  The landing door 23 includes a high speed door 24 and a low speed door 25. The high-speed door 24 and the low-speed door 25 are respectively suspended on hanger rails 26 and 27 fixed to a wall surface immediately above the entrance 20 via a pair of suspension rollers 32 and 34 so as to be movable in the left-right direction. .

  In the present embodiment, an example is given in which the landing door 23 is a two-door door, but the landing door may be a single door or may be constituted by three or more doors.

  The hanger rails 26 and 27 are long plate-shaped steel materials, are arranged so as to be parallel to the back side and the wall side of the hoistway S, and the wall surface of the hoistway S via the fixing brackets 28 and 29. Both ends are fixedly supported by a hanger case 30 provided on W.

  The suspension roller pairs 32 are respectively disposed at both ends of a door hanger 33 provided at the upper end of the high-speed door 24 so as to sandwich the hanger rail 26 from above and below. The suspension roller pair 34 is disposed on both ends of a door hanger 35 provided at the upper end of the low speed door 25, similarly to the suspension roller pair 32.

  At the lower end of the high-speed door 24, connecting portions 24a and 24b for connecting the door shoe 38 are provided on both ends, and each connecting portion 24a and 24b is below a discharge belt, which will be described later, by a bolt (not shown). It is connected to the door shoe 38 located. Although not shown in detail in the drawing, a fixing bracket protrudes upward along the connecting portions 24a and 24b on the door shoe 38, and is connected to the connecting portion 24a by a bolt at a position above a later-described discharge belt. , 24b. Similarly, connecting portions 25a and 25b for connecting the door shoe 39 are also provided at the lower end portion of the low-speed door 25, and the connecting portions 25a and 25b are connected to the door shoe 39 via fixing brackets. Further, sill grooves 42 and 44 are formed in the upper surface of the sill 40 along the longitudinal direction, and door shoes 38 and 39 are slidably disposed in the sill grooves 42 and 44. Guide grooves 46 and 48 are formed on both side surfaces of the sill grooves 42 and 44 along the longitudinal direction. Each of the guide grooves 46 and 48 has a function of guiding a discharge belt, which will be described later, along the longitudinal direction of the sill grooves 42 and 44. In the present embodiment, the guide grooves 46 and 48 are provided on both side surfaces of the sill grooves 42 and 44, but may be provided only on one side surface.

  The high-speed door 24 on each floor has an engaging portion (not shown) that operates when the car 14 arrives on the corresponding floor, and opens and closes when this engaging portion engages with the opening / closing door 14b of the car 14. . The low-speed door 25 is connected to the high-speed door 24 through an interlocking mechanism including a rope and a moving pulley (not shown), and the moving distance and speed thereof are set to be half that of the high-speed door 24. With the above configuration, when the door is closed, the high speed door 24 shields from the right end side to the center of the entrance 20 when viewed from the landing H, and the low speed door 25 slides by a half distance of the high speed door 24 to enter the entrance 20. Shield from the center to the left end.

  FIG. 5 is a cross-sectional view showing the configuration around the sill grooves 42 and 44. FIG. 6 is a diagram showing the overall configuration of the foreign matter discharging apparatus 50 for elevator door sill grooves. FIG. 7 is a diagram showing the configuration of the door shoes 38 and 39, the sill 40, and the discharge belt in the BB cross section shown in FIG. FIG. 8 is a diagram showing the configuration of the discharge belt and the dust box as viewed from the direction C shown in FIG. The elevator 10 includes a foreign matter discharge device 50 for an elevator door sill groove that discharges foreign matter such as pebbles that have entered the sill grooves 42 and 44. In the foreign matter discharging apparatus 50, the roller units 51 and 54 disposed at both ends of the sill 40, the discharge belts 56 and 58 bridged between the roller units 51 and 54, and the discharge belts 56 and 58 are bent by their own weight. A plurality of support roller units 60 are provided for support so as not to stop.

  The roller unit 51 is disposed so as to be adjacent to one end of the threshold 40, and includes rollers 52 and 53. The rollers 52 and 53 are rotatably supported on the same axis by a support shaft 55 provided on the wall surface W of the hoistway S, and both ends of the outer peripheral surface have a diameter so that discharge belts 56 and 58 described later do not fall off. Each has a flange shape protruding in the direction. On the other hand, the roller unit 54 is disposed adjacent to the other end of the threshold 40 and has the same configuration as the roller unit 51.

  Since the discharge belts 56 and 58 have the same configuration, in the following description, only the discharge belt 58 will be described, and the description of the discharge belt 56 will be omitted as appropriate.

  The discharge belt 58 is an endless belt that is stretched between the roller 53 of the roller unit 51 and the roller of the roller unit 54 so as to surround the sill 40, and as shown in FIG. It is inserted into the guide groove 48 of the groove 44 so as to be movable along the longitudinal direction, and is arranged so as to cover the upper surface of the sill groove 44. This prevents foreign matter such as pebbles from entering the threshold groove 44. Further, since the discharge belt 58 can be prevented from being stepped on by placing the discharge belt 58 at a position lower than the position of the upper surface of the sill 40, wear of the discharge belt 58 can be reduced.

  By moving the discharge belt 58 along the guide groove 48 as described above, the discharge belt 58 can be prevented from floating. The discharge belt 58 may be made of a material that is easily charged, such as polyethylene or vinyl chloride. Thereby, dust easily adheres to the discharge belt 58, and dust around the sill 40 can be efficiently removed.

  As shown in FIG. 7, the discharge belt 58 is formed with substantially rectangular openings 58a and 58b corresponding to the positions of the connecting portions 25a and 25b of the low-speed door 25 described above. Further, when replacing the door shoe 39 during maintenance inspection, etc., it is necessary to remove the door shoe 39 from the connecting portions 25a and 25b and to remove the door shoe 39 from the openings 58a and 58b by removing the bolts fixing the fixing brackets described above. There is.

  Therefore, the openings 58 a and 58 b are formed to positions closer to both ends of the low-speed door 25 than the door shoe 39 directly below, and the size thereof is also larger than the door shoe 39. With this configuration, the door shoe 39 removed from the connecting portions 25a and 25b is slid toward the end of the low speed door 25 to facilitate removal.

  Further, the inner side surfaces of the openings 58a and 58b are formed at positions where they contact the inner end surfaces of the connecting portions 25a and 25b, respectively. For this reason, as the low speed door 25 moves, the discharge belt 58 moves along the sill groove 44 by being pushed by one of the connecting portions 25 a and 25 b. In this way, the movement of the discharge belt 58 can be synchronized with the movement of the low speed door 25. In addition, you may make it the outer side surface of opening part 58a, 58b contact | abut to the outer side end surface of connection part 25a, 25b, respectively. Also in this case, the discharge belt 58 can be moved in synchronization with the movement of the low speed door 25.

  As shown in FIG. 6, a plurality of support roller units 60 are arranged at equal intervals directly below the threshold 40. As shown in FIG. 5, each support roller unit 60 includes support rollers 62 and 63 that are rotatably supported by a support bar 61 that is fixed to the wall surface W so as to correspond to the discharge belts 56 and 58. . The support rollers 62 and 63 contact and support the lower surfaces of the discharge belts 56 and 58. This prevents the discharge belts 56 and 58 from being bent by their own weight.

  As shown in FIG. 8, the foreign matter discharging device 50 includes cleaning brushes 64 and 65 for scraping off dust and the like adhering to the surfaces of the discharge belts 56 and 58, dust and pebbles scraped by the cleaning brushes 64 and 65, and the like. And a dust box 70 for collecting the foreign matter.

  As shown in FIG. 8, the cleaning brushes 64 and 65 are disposed immediately below the rollers 52 and 53 of the roller unit 51, and have base portions 66 and 67 fixedly supported on the bottom surface of the dust box 70, and base portions 66 and 67. And the tips of the brushes 68 and 69 are arranged so as to come into contact with the surfaces of the discharge belts 56 and 58. The brushes 68 and 69 may be made of a material such as nylon containing glass fiber.

  In this way, when the brushes 68 and 69 are made of a nylon material containing glass fibers that are easily charged to the positive electrode, and the discharge belts 56 and 58 are made of materials such as polyethylene and vinyl chloride that are easily charged to the negative electrode as described above, Dust adhering to the discharge belts 56 and 58 by electrostatic force is easily adsorbed by the brushes 68 and 69, and the dust can be efficiently collected.

  A cleaning brush is also arranged directly below the roller unit 54, and since it has the same configuration as the cleaning brushes 64 and 65 described above, detailed description thereof is omitted.

  The dust box 70 has a box shape with an upper surface opened so as to surround the cleaning brushes 64 and 65, and is detachably fixed to a bracket 74 fixed to the wall surface W via bolts 76 and nuts 78. As a result, the dust box 70 can be removed and foreign matter such as pebbles accumulated therein can be collected. A dust box is also arranged directly below the roller unit 54, and since it has the same configuration as the dust box 70 described above, description thereof is omitted.

  A rotating shaft that rotatably supports the dust box 70 may be further provided on the wall surface W. Thereby, after removing the bolt 76, the dust box 70 can be rotated around the rotation axis and turned upside down to receive the foreign matter accumulated in the plastic bag or the like for collection. In this case, there is an advantage that the dust box 70 is not accidentally dropped into the hoistway S.

  According to the foreign matter discharging apparatus 50 for elevator door sill grooves according to the present invention, foreign matters such as pebbles that have entered the sill grooves 42 and 44 reciprocate through the sill grooves 42 and 44 in conjunction with the opening / closing operation of the landing door 23. The belts 56 and 58 are discharged out of the sill grooves 42 and 44. As a result, it is difficult for foreign matter to be caught between the door shoes 38 and 39 and the sill grooves 42 and 44, and the occurrence frequency of failures in the landing door 23 can be reduced.

  In the said embodiment, although the foreign material discharge | emission apparatus 50 of the elevator door sill groove was demonstrated and demonstrated as the example installed in the landing door 23, you may make it install in the opening-and-closing door 14b of the passenger car 14.

  FIG. 9 is a diagram illustrating a configuration of a foreign matter discharge device 80 for an elevator door sill groove that is a modification of the foreign matter discharge device 50 described above. In the following description, the description of the same configuration as the foreign matter discharging apparatus 50 will be omitted as appropriate, and only different parts will be described. Further, the same components as those of the foreign matter discharging apparatus 50 will be described with the same reference numerals.

  The discharge belts 56 and 58 of the foreign material discharge device 80 are disposed so as to cover the sill grooves 82 and 84 of the sill 81. The discharge belts 56 and 58 are provided so that both end portions in the width direction are fitted into recesses 86 and 88 having functions as guide grooves formed at the upper end portions of the sill grooves 82 and 84. The depressions 86 and 88 are formed along the longitudinal direction of the sill 81, and the depth thereof is formed to be slightly deeper than the thickness of the discharge belts 56 and 58. Therefore, it is possible to form a clean appearance in which the step between the upper surface of the sill 81 and the upper surfaces of the discharge belts 56 and 58 is not conspicuous. Moreover, since the upper surfaces of the discharge belts 56 and 58 are lower than the upper surface of the sill 81, the user is not stepped on the discharge belts 56 and 58, and wear of the discharge belts 56 and 58 can be reduced.

  In addition, according to the foreign substance discharge device of the elevator door sill groove according to the present invention, the invention is not limited to the configuration of the above-described embodiment and its modified examples, but the matters described in the claims of the present application and the equivalents thereof. It goes without saying that various improvements and changes can be made within the scope of.

  10 elevator, 23 landing door, 24 high speed door, 25 low speed door, 38, 39 door shoe, 40, 81 sill, 42, 44, 82, 84 sill groove, 46, 48 guide groove, 50, 80 foreign matter discharge device, 51, 54 roller unit, 52, 53 roller, 56, 58 discharge belt, 58a, 58b opening, 64, 65 cleaning brush, 70 dust box, 86, 88 depression, H landing, S hoistway, W wall surface.

Claims (3)

A device for preventing foreign matter from being mixed into a sill groove on which a door shoe provided at the lower end of an elevator door slides,
A roller rotatably provided on both outer sides in the longitudinal direction of the sill groove;
The elevator comprises a belt that is spanned between the rollers so as to cover a position below the sill upper surface of the sill groove, and that has an opening for inserting the door shoe into the sill groove. A discharge belt that reciprocates with respect to the sill groove in conjunction with the opening and closing operation of the door and discharges foreign matter out of the sill groove;
A foreign matter discharge device for an elevator door sill groove characterized by comprising: In the foreign matter discharge device of the elevator door sill groove according to claim 1,
A cleaning brush arranged to contact the belt;
A dust box arranged to surround the cleaning brush;
A foreign matter discharging apparatus for an elevator door sill groove characterized by further comprising: In the foreign matter discharge device of the elevator door sill groove according to claim 1 or 2,
The both ends of the belt in the width direction are inserted into guide grooves provided on both side surfaces of the sill groove so as to be movable along the longitudinal direction of the sill groove. Discharging device.

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