JP2010202394A - Pit shield of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pit screen of an elevator capable of reducing noise of the elevator by restraining chattering noise generated by the pit screen which is capable of saving space while avoiding size increase. <P>SOLUTION: The pit shield body 20 of the elevator for preventing entering from a side of a car 2 to a side of a balancing weight 3 in a pit 12 of the elevator includes a screen member 30 arranged between the side of the car 2 and the side of the balancing weight 3 in the pit 12 and a vibration restraining means 50 arranged for the screen member 30. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an elevator pit shield and an elevator, and more particularly, to an elevator pit shield such as a pit screen that prevents entry from a car side to a counterweight side in an elevator pit.

  The pit screen is installed between the elevator car and the counterweight in the pit to prevent the elevator pit from entering the counterweight side from the car side.

  FIG. 8 shows a conventional pit screen 100. FIG. 9 shows a square frame 110 of the pit screen 100 shown in FIG. The pit screen 100 has two square frames 110. Each square frame 110 is assembled using a plate bending angle 102, and a reinforcing material 103 and a mesh material 104 are attached to the square frame 110.

  The pit screen 100 is arranged from the bottom to the top with a certain distance from the pit floor.

  A mounting hole is provided in the square frame 110 of the pit screen 100. The left and right screen mounting brackets 106 are attached to the left and right rails 105 on the counterweight 120 side. The mounting hole of the square frame 110 and the screen mounting bracket 106 are fixed by passing a bolt through the mounting hole of the square frame 110 of the pit screen 100 and the mounting hole of the screen mounting bracket 106.

  An elevator pit is disclosed in Patent Document 1, and is surrounded by a space pit bottom surface and a pit side surface of the pit.

JP 2005-298141 A

  Since the conventional pit screen 100 is configured by the combination of the plate bending angle 102, the reinforcing material 103, and the mesh material 104, the width of the pit screen 100 is increased. Therefore, when the gap between the car and the counterweight is small, the clearance between either the car and the counterweight and the pit screen 100 may not be ensured.

  When the car travels on the hoistway and enters the pit, wind is generated in the pit by the traveling wind of the car, and the pit screen vibrates in the pit and generates chatter noise. For this reason, it is desired to reduce the noise of the elevator by suppressing chatter noise generated by the pit screen.

  Further, when the pit dimension is a non-standard pit height dimension other than a predetermined standard pit height dimension, the screen mounting bracket 106 and the counterweight side rail 105 may interfere with each other.

  The present invention has been made in view of the above, and an object of the present invention is to save space by avoiding an increase in size and to suppress chatter noise generated by a pit screen, thereby reducing elevator noise. It is to provide an elevator pit shield.

  The elevator pit shield according to the present invention is an elevator pit shield that prevents entry from the passenger car side to the counterweight side in the elevator pit, and is located between the passenger car side and the counterweight side in the pit. And a vibration suppressing means provided on the screen member.

  According to the present invention, it is possible to provide an elevator pit shield capable of reducing the noise of the elevator by reducing the chatter noise generated by the pit screen by avoiding an increase in size and reducing the space.

It is a figure which shows preferable embodiment of the elevator which has a pit screen as a pit shielding body of the elevator of this invention. It is the figure which looked at the counterweight, guide rail, and pit screen from the BB line in FIG. It is the side view which looked at the guide rail and pit screen shown in FIG. 2 from the S direction. It is a figure which shows 2nd Embodiment of the pit screen of the elevator of this invention. It is a figure which shows 3rd Embodiment and the comparative example of the pit screen of the elevator of this invention. It is a figure which shows 4th Embodiment of the pit screen of the elevator of this invention. It is a figure which shows 5th Embodiment of the pit screen of the elevator of this invention. It is a figure which shows a prior art example. It is a figure which shows one square frame of the pit screen shown in FIG.

  Embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a view showing a preferred embodiment of an elevator having a pit screen as an elevator pit shield according to the present invention.

  An elevator 1 shown in FIG. 1 is, for example, a vine elevator system. The elevator 1 has a car 2 and a counterweight 3, and the car 2 and the counterweight 3 are connected by a main rope 4. The electric motor 5 of the hoisting machine 13 is connected to the hoisting machine main shaft 6, and the main rope 4 is engaged with the hoisting machine main shaft 6. The control unit 7 is electrically connected to the floor portion side of the car 2 via a tail cord 8.

  When the electric motor 5 of the hoisting machine 13 rotates the hoisting machine main shaft 6 forward or backward, the car 2 moves up and down in the T direction along the guide rail 9 in the hoistway 11 and the pit 12 of the hoistway 11. It is supposed to be. At this time, the counterweight 3 moves up and down in the T direction along the guide rail 10 in the hoistway 11 and pit 12 of the building.

  As shown in FIG. 1, the pit screen 20 is fixed to a pair of guide rails 10 of the counterweight 3 as an example of an elevator pit shield. This pit screen 20 is installed between the car 2 of the pit 12 and the counterweight 3 in order to prevent the pit 12 of the elevator 1 from entering the counterweight 3 side from the car 2 side. The pit screen 20 is arranged along the Z direction from the bottom to the top, for example, with a certain distance from the pit floor 14. In FIG. 1, the Z direction is the vertical direction of the drawing, the X direction is the vertical direction in the drawing, and the Y direction is the horizontal direction in the drawing. The X, Y, and Z directions are orthogonal to each other.

  FIG. 2 is a view of the counterweight 3, the guide rail 10, and the pit screen 20 in FIG. FIG. 3 is a side view of the guide rail 10 and the pit screen 20 shown in FIG. 2 viewed from the S direction in FIG.

  As shown in FIG. 2, the guide rail 10 includes a first guide rail member 10A and a second guide rail member 10B. The first guide rail member 10A and the second guide rail member 10B are disposed so as to face each other in parallel along the Z direction (the direction perpendicular to the paper surface of FIG. 2). The first guide rail member 10A and the second guide rail member 10B guide the counterweight 3 in the Z direction.

  The pit screen 20 has a symmetrical shape with respect to the center line CL shown in FIG. Therefore, in FIG. 3, the side surface shape of the pit screen 20 is representatively shown by showing the guide rail 10 and the pit screen 20 from the S direction of FIG. 2.

  2 and 3, the pit screen 20 includes two plate-like screen members 30 as shielding members and a total of four plate-like first brackets on the left side with the center line CL in FIG. 2 as the center. 21 and a total of four plate-like second brackets 22 on the right side with the center line CL in FIG. 2 as the center. As shown in FIGS. 2 and 3, four first brackets 21 are detachably fixed to the first guide rail 10A on the left side by bolts 21B. On the right side, four second brackets 22 are detachably fixed to the second guide rail 10B by bolts 22B.

  As shown in FIG. 3, the two pit screens 20, 20 have a gap G along the Z direction and a total of four plate-like first brackets 21 on the left side and a total of four plate-like seconds on the right side. The bracket 22 is used to fix the first guide rail member 10A and the second guide rail member 10B. As shown in FIG. 2, a total of four plate-like first brackets 21 on the left side and a total of four plate-like second brackets 22 on the right side each have a substantially L-shaped cross section. The two first brackets 21 are fixed parallel to the Y direction with a distance D in the Z direction. Similarly, the two second brackets 22 are fixed parallel to the Y direction with a distance D in the Z direction.

  As shown in FIGS. 2 and 3, the upper end portion 32 of the screen member 30 is fixed to the attachment portion 31 of the upper plate-shaped first bracket 21 by bolts 31 </ b> B. An upper end portion 32 of the screen member 30 is fixed to the attachment portion 31 of the upper plate-like second bracket 22 by a bolt 31B. Further, the lower end portion 34 of the screen member 30 is fixed to the attachment portion 33 of the lower plate-shaped first bracket 21 by a bolt 33B. A lower end portion 34 of the screen member 30 is fixed to the attachment portion 33 of the lower plate-like second bracket 22 by a bolt 33B.

  The screen member 30 shown in FIGS. 2 and 3 can be configured by a frame member and a net-like member attached to the frame member for weight reduction, for example, but is not particularly limited.

  As shown in FIG. 3, a plate-like damping material 40 as vibration suppressing means is attached to the inner surface 35 side of the screen member 30 with, for example, an adhesive. The damping material 40 is not particularly limited as long as it is a material that suppresses vibration, and for example, a member such as a rubber plate or felt can be used.

  As described above, since the damping material 40 is attached to the inner surface 35 of the screen member 30, the damping material 40 is generated when the car 2 or the counterweight 3 shown in FIG. The vibration of the screen member 30 caused by the traveling wind can be suppressed. By suppressing this vibration, the chatter sound of the screen member 30 due to the traveling wind can be suppressed. Accordingly, since the pit screen has a simple configuration, it is possible to save space by avoiding an increase in size, and to suppress chatter noise generated by the pit screen, it is possible to reduce elevator noise.

(Second Embodiment)
Next, a second embodiment of the elevator pit screen of the present invention will be described with reference to FIG.

  The pit screen 20A shown in FIG. 4 differs from the pit screen 20 shown in FIGS. 2 and 3 in the shape of the screen member 30A and the configuration of the vibration suppressing means. Other constituent elements of the pit screen 20A shown in FIG. 4 are substantially the same as the corresponding constituent elements of the pit screen 20 shown in FIG. 2 and FIG.

  As shown in FIG. 4, the screen member 30A of the pit screen 20A is characterized by the shape of the screen member 30A itself, instead of mounting the damping material 40 shown in FIG. That is, vibration suppressing means 50 having a convex cross section is formed in the middle portion of the screen member 30A. As described above, since the vibration suppressing means 50 having a convex cross section is formed on the screen member 30A, mechanical rigidity can be increased as compared with a simple plate-shaped screen member.

  By providing the vibration suppressing means 50 having a convex cross section, it is possible to increase the rigidity of the screen member 30A by bending a part of the screen member 30A in this way without separately mounting a damping material. The traveling wind generated when the car 2 or the counterweight 3 shown in FIG. 1 enters the pit 12 can be prevented from vibrating the screen member 30. Thereby, the vibration suppression means 50 which has a convex cross section can suppress that the screen member 30 generate | occur | produces chatter noise by driving | running | winding wind by suppressing a vibration. Accordingly, since the pit screen has a simple configuration, it is possible to save space by avoiding an increase in size, and to suppress chatter noise generated by the pit screen, it is possible to reduce elevator noise. In addition, since the second embodiment described above does not need to be equipped with a damping material compared to the first embodiment, the number of parts can be reduced and the cost can be reduced.

(Third embodiment)
Next, a third embodiment of the elevator pit screen and a comparative example will be described with reference to FIG. FIG. 5A shows a comparative example, and FIG. 5B shows a third embodiment of the present invention in which the problems that occur in the comparative example of FIG. 5A are solved.

  FIG. 5A shows a case where the four brackets 22 (21) on the left and right located in the middle interfere with the rail bracket 90 on the counterweight side. The brackets interfere with each other because the pit height is low when the pit size is not the standard pit size but the non-standard pit size.

  In this case, as shown in FIGS. 5 (A) to 5 (B), the four brackets 22 (21) are removed on the left and right sides interfering with the rail bracket 90. Thus, since the four second brackets 22 (21) are removed at the middle left and right, the following measures are taken.

  That is, the structure of the pit screen 20B shown in FIG. 5 is basically the same as the structure of the pit screen 20A of the second embodiment of the present invention described above, but the following points are different. As shown in a portion H in FIG. 5B, the lower end portion 34 of the upper screen member 30A and the upper end portion 32 of the lower screen member 30A are connected so as to be directly overlapped by a bolt 33B. In this way, the lower end portion 34 of the upper screen member 30A and the upper end portion 32 of the lower screen member 30A are positioned at the lowest position so that they can be directly connected in the Y direction by the bolts 33B. The second bracket 22 (21) is moved in the horizontal direction Y1 by the thickness of the upper end portion 32 of the lower screen member 30A, so that the position can be adjusted. By such position adjustment in the Y1 direction, position adjustment for the plate thickness of the screen member can be easily performed. As a structure in which the second bracket 22 (21) positioned at the lowest position can be adjusted in the Y1 direction, for example, a long hole 91 that is long in the Y direction may be formed.

  Thus, even if the pit size is not the standard pit size but the non-standard pit size, the upper side is changed from the state of the comparative example of FIG. 5A to the third embodiment shown in FIG. 5B. The lower end 34 of the screen member 30A and the upper end 32 of the lower screen member 30A can be directly connected. The structure of the pit screen 20B shown in FIG. 5 corresponds to a non-standard pit height dimension without any additional parts or modification when the rail bracket on the counterweight side and the bracket for mounting the screen member interfere with each other. The screen member can be attached while avoiding interference.

  The vibration suppressing means 50 having a convex cross section can suppress the screen member 30 from generating chatter noise due to traveling wind by suppressing vibration. Accordingly, since the pit screen has a simple configuration, it is possible to save space by avoiding an increase in size, and to suppress chatter noise generated by the pit screen, it is possible to reduce elevator noise. In addition, since the third embodiment described above does not require the vibration damping material to be attached as compared with the first embodiment, the number of parts can be reduced and the cost can be reduced.

(Fourth embodiment)
Next, a fourth embodiment of the elevator pit screen of the present invention will be described with reference to FIG. 6A is a side view of the pit screen, and FIG. 6B is a front view of the pit screen of FIG. 6A viewed from the A direction.

  The screen pit 20C of the fourth embodiment shown in FIG. 6 is basically the same as the screen pit 20B of the third embodiment shown in FIG. 5, except for the following points. In other words, the lower end 34 of the upper screen member 30 </ b> A and the upper end 32 of the lower screen member 30 </ b> A can be fixed by one bracket 22. One bracket 22 has a vertical mounting bracket member 93. The vertical mounting bracket member 93 has two vertically long screen mounting elongated holes 94.

  In contrast, the lower end 34 of the upper screen member 30 </ b> A and the upper end 32 of the lower screen member 30 </ b> A each have a vertically long slot 95. These long holes 95 are formed at positions corresponding to the screen mounting long holes 94.

  In the fourth embodiment, when the rail bracket 90 on the counterweight side and the bracket 22 (21) for attaching the screen member interfere with each other, the vertical mounting bracket member 93 is used for the bracket 22 (21). The screen member can be held without being affected by the wind.

  For this reason, when the rail bracket on the counterweight side and the bracket for mounting the screen member interfere with each other, it is possible to cope with non-standard pit height dimensions without additional parts or modifications, while avoiding interference. A screen member can be attached.

  The vibration suppressing means 50 having a convex cross section can suppress the screen member 30 from generating chatter noise due to traveling wind by suppressing vibration. Accordingly, since the pit screen has a simple configuration, it is possible to save space by avoiding an increase in size, and to suppress chatter noise generated by the pit screen, it is possible to reduce elevator noise. In addition, the fourth embodiment described above does not require a vibration damping material to be attached as compared with the first embodiment, so that the number of parts can be reduced and the cost can be reduced.

(Fifth embodiment)
Next, a fifth embodiment of the elevator pit screen and a comparative example will be described with reference to FIG. FIG. 7A shows a comparative example, and FIG. 7B shows a fifth embodiment of the present invention in which the problem that occurs in the comparative example of FIG. 7A is solved.

  The pit screen 20D of the fifth embodiment shown in FIG. 7 is basically the same as the pit screen 20B of the third embodiment shown in FIG. 5 and the pit screen 20C of the fourth embodiment shown in FIG. However, the differences are as follows. That is, in the pit screen 20B of the third embodiment shown in FIG. 5 and the pit screen 20C of the fourth embodiment shown in FIG. 6, when the pit screen is assembled, the rail bracket 90 and the screen member on the counterweight side are assembled. It is necessary to check in advance whether or not the brackets for mounting will interfere.

  However, in the pit screen 20D of the fifth embodiment shown in FIG. 7, the counterweight-side rail bracket 90 is not Z with respect to the counterweight-side rail bracket 90 so that the rail bracket on the counterweight side and the bracket for attaching the screen member do not interfere from the beginning. The screen member 30A crosses along the direction so that the bracket for attaching the screen member does not come to the rail bracket 90 on the counterweight side.

  For this purpose, FIG. 7A shows a length K1 of one screen member 30A in the comparative example as in the fifth embodiment of the present invention shown in FIG. The length K2 in the vertical direction of the two screen members 30P is set larger than the length K1. That is, the vertical length K2 of at least one screen member among the plurality of screen members is set to be equal to or greater than the length K1 of the other screen member plus the height K3 of the rail bracket 90 on the counterweight side. Has been.

  Thereby, the rail bracket 90 on the counterweight side and the bracket 22 for attaching the screen member do not interfere with each other, so that the pit screen is assembled from the lower side to the upper side without checking the interference of these members in advance. Can be assembled easily.

  The elevator pit shield according to the present invention is an elevator pit shield that prevents entry from the passenger car side to the counterweight side in the elevator pit, and is located between the passenger car side and the counterweight side in the pit. And a vibration suppressing means provided on the screen member. Thereby, space saving can be achieved avoiding an increase in size, and the noise of the elevator can be reduced by suppressing chatter noise generated by the pit screen.

  The elevator pit shield according to the present invention includes a bracket member that fixes the screen member to the counterweight-side rail, and the bracket member interferes with a rail bracket that is fixed to the counterweight-side rail. The screen member and the lower screen member are directly connected to each other. As a result, even if the pit size is not a standard pit size but a non-standard pit size, it is possible to correspond to the non-standard pit height size without additional parts or modification, and the screen avoids interference. A member can be attached.

  The elevator pit shield according to the present invention includes a bracket member for fixing the screen member to the counterweight-side rail, and the bracket member includes a longitudinal mounting bracket member having two elongated holes. In addition, an elongated hole is formed at a position corresponding to the two elongated elongated holes of the vertical mounting bracket member at each of the upper end portion and the lower end portion of the screen member, and the long portion of the lower end portion of the upper screen member is formed. Bolts are passed through the holes and the oblong holes in the upper end of the screen member on the lower side and the two oblong elongated holes in the vertical mounting bracket member so that the upper end and the lower end of the screen member are in the vertical direction. It is fixed to the direction mounting bracket member. This allows non-standard pit height dimensions to be accommodated without additional parts or modifications, even if the pit dimensions are non-standard pit dimensions rather than standard pit dimensions, avoiding interference. While the screen member can be attached.

  The elevator pit shield according to the present invention includes a bracket member that fixes the screen member to the counterweight-side rail, and the vertical length of at least one of the plurality of screen members is different from that of the other screen member. It is set to be equal to or greater than the length of the screen member plus the height of the rail bracket on the counterweight side. As a result, even if the pit size is not a standard pit size but a non-standard pit size, it is possible to correspond to the non-standard pit height size without additional parts or modification, and the screen avoids interference. A member can be attached.

  The present invention is not limited to the above embodiment, and various modifications can be adopted. The shape of the screen member and the bracket member can be arbitrarily selected without being limited to the illustrated example.

  Furthermore, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiments of the present invention. For example, you may delete some components from all the components shown by embodiment of this invention. Furthermore, you may combine the component covering different embodiment suitably.

DESCRIPTION OF SYMBOLS 1 Elevator 2 Car 3 Balance weight 10 Balance weight guide rail 11 Hoistway 12 Pit 20 Pit screen (an example of pit shield)
DESCRIPTION OF SYMBOLS 10A 1st guide rail member 10B 2nd guide rail member 21 1st bracket 22 2nd bracket 30 Plate-shaped screen member 40 Plate-shaped damping material as vibration suppression means 50 Vibration suppression means which has a convex cross section

Claims (4)

An elevator pit shield that prevents entry from the car side to the counterweight side in the elevator pit,
A screen member disposed between the car side and the counterweight side in the pit;
Vibration suppressing means provided on the screen member;
An elevator pit shield characterized by comprising:   A bracket member for fixing the screen member to the counterweight side rail, and the upper screen member and the lower screen when the bracket member interferes with a rail bracket fixed to the counterweight side rail; The elevator pit shield according to claim 1, wherein the members are directly connected. A bracket member for fixing the screen member to the counterweight side rail;
The bracket member has a vertical mounting bracket member having two vertically long holes, and the upper and lower ends of the screen member have two vertically long brackets of the vertical mounting bracket member, respectively. An elongated hole is formed at a position corresponding to the hole, the elongated hole at the lower end of the upper screen member, the elongated hole at the upper end of the lower screen member, and the two vertical mounting bracket members. 2. The elevator pit shield according to claim 1, wherein an upper end portion and a lower end portion of the screen member are fixed to the vertical mounting bracket member by passing a bolt through the vertically long slot. A bracket member for fixing the screen member to the counterweight-side rail;
The longitudinal length of at least one of the plurality of screen members is set to be equal to or greater than the length of the other screen member plus the height of the rail bracket on the counterweight side. The elevator pit shield according to claim 1.

Images