JP2005138912A - Vibration restricting device for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate loads added to a guide roller when a car is stopped to prevent its deformation in purely mechanical and extremely simple constitution. <P>SOLUTION: This vibration restricting device for an elevator is composed of a taper plate 16 and an upper backup roller 15 as an upper backup mechanism 9 close to an upper guide roller 7. As the car falls to stop, the upper backup roller 15 gets over the taper plate 16 to make the upper guide roller 7 separated from a guide rail 2. The upper guide roller 7 can thus be prevented from deforming when the car is stopped for a long time, and vibration due to deformation of the upper guide roller 7 during elevation of the car thereafter can be restricted. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vibration suppressing device provided in a back plunger type or side fork type elevator that is an indirect hydraulic elevator, and particularly when the car is stopped for a long time, the guide rollers provided in the upper and lower parts of the car are deformed. The present invention relates to a vibration suppressing device that suppresses vibrations caused by guide rollers when the car is subsequently moved up and down.

The back plunger type or side fork type elevator is a so-called cantilever type elevator. In this case, the deformation of the guide roller due to the eccentric load becomes remarkable. As a structure for preventing the deformation of the guide roller due to the uneven load, the structure described in Patent Document 1 has been proposed. In the structure described in Patent Document 1, when the car stops, the guide roller is separated from the guide rail by applying a pressing force by a hydraulic cylinder, which is a contact release means, from the guide roller side to the guide rail. The hydraulic cylinder bears an offset load instead of the guide roller, thereby reducing the load on the guide roller and preventing its deformation.
JP 2000-153974 A

  However, in the method described in Patent Document 1, since the contact release means is a hydraulic type, the overall structure including the handling of piping and the like is complicated, and control for operating the hydraulic contact release means is performed. There was a problem that an apparatus was required and the cost was increased.

  The present invention has been made paying attention to such a problem, and has made it possible to achieve the intended purpose with a very simple configuration by making a slight improvement to the car and the guide rail. An object of the present invention is to provide an elevator vibration suppression device.

  The invention according to claim 1 is a guide roller that reduces the load on the guide roller by applying a force in a direction away from the guide rail to the guide rollers provided at the upper and lower parts of the car when the elevator car is stopped. In the back plunger type or side fork type elevator vibration suppressing device provided with the load reducing means, the guide roller load reducing means is configured such that the movable contact member provided in a part of the car contacts the fixed contact member. It is characterized in that a force in a direction away from the guide rail is applied to the guide roller by riding on the guide roller.

  That is, in the invention according to the first aspect, it is sufficient to have a function of canceling the eccentric load applied to the guide roller, that is, a function capable of applying an external force in a direction away from the guide rail to the guide roller.

  Therefore, according to the first aspect of the present invention, when the car stops, an external force is applied from a direction opposite to the direction of the fall of the car by the movable side abutting member riding on the stationary side abutting member while abutting. As a result, the guide roller moves away from the guide rail, so that the load to be borne by the guide roller when the car stops, that is, the load on the guide roller is reduced.

  In this case, as a more specific structure of the guide roller load reducing means, as described in claim 2, the guide roller is provided independently for each guide roller provided at the upper and lower parts of the car, and at least the upper side of the guide roller is reduced. The guide roller load reducing means is composed of a backup roller provided at a position facing the guide roller across the guide rail, and an auxiliary rail that is fixed to the guide rail and includes an inclined guide surface.

  Then, the backup roller rolls in contact with the inclined guide surface to apply a force in a direction away from the guide rail to the guide roller.

  Further, it is preferable that at least the surface of the backup roller is covered with an elastic body such as rubber in order to alleviate vibrations generated at the time of contact with the inclined guide surface.

  Therefore, in the invention described in claim 2, the auxiliary rail having the inclined guide surface functions as a fixed-side contact member, while the backup roller functions as a movable-side contact member. Will work in the same way. That is, when the backup roller rolls so as to ride on the inclined guide surface of the auxiliary rail, an external force is applied to the car from the direction opposite to the falling direction due to its own weight, so that the guide roller moves away from the guide rail. As a result, the load to be borne by the guide roller when the car is stopped, that is, the load on the guide roller is reduced.

  Regarding the guide roller load reducing means, it is possible to reduce the load on the guide roller only by the upper guide roller load reducing means. However, in order to ensure stability, the guide roller load reducing means is provided on the upper and lower sides as described above. It is desirable to apply a force in a direction away from the guide rail to the individual guide rollers.

  The invention according to claim 3 further embodies the configuration of the lower guide roller load reducing means, and the lower guide roller load reducing means is located at a position facing the guide roller across the guide rail. And a movable auxiliary rail attached to the guide rail and provided with an inclined guide surface and biased in a direction approaching the guide rail by an elastic means such as a spring.

  In addition, the backup roller rolls in contact with the inclined guide surface to apply a force in a direction away from the guide rail to the guide roller.

  That is, in the third embodiment, the movable auxiliary rail functions as a fixed-side contact member, while the backup roller functions as a movable-side contact member.

  Therefore, in the invention according to claim 3, the backup roller is pressed by rolling so that the backup roller rides on the inclined guide surface of the auxiliary rail urged by the elastic means, and the upper guide roller is pressed. It works in the same way as the load reducing means.

  In this case, as described in claim 4, when the backup roller rolls while contacting the inclined guide surface, a force in a direction away from the guide rail is applied to the guide roller, and the backup roller is It is desirable to contact the guide rail. At the same time, as described in claim 5, it is desirable that the guide roller and the backup roller are attached to the same support member and provided at positions facing each other in the horizontal direction with the guide rail interposed therebetween.

  According to the first to third aspects of the present invention, vibrations caused by the deformation of the guide roller can be suppressed under an extremely simple mechanical configuration, so that the apparatus can be simplified and the cost can be reduced. In addition, there is an advantage that the intended purpose can be achieved by adding a slight improvement to the existing elevator.

  FIG. 1 and the following drawings show a preferred embodiment of the vibration suppressing device according to the present invention. FIG. 1 shows a case where a side fork elevator car including the vibration suppressing device stops at the lowest floor. 2 is a perspective schematic view, FIG. 2 is an enlarged perspective view of part A in FIG. 1, FIG. 3 is a view of FIG. 2 viewed from the direction of arrow C, and FIG. 4 is a view of FIG. Show.

  As shown in FIG. 1, the side fork type elevator is a so-called cantilever type elevator in which a main rope 4 is fastened to a lower end portion of a car 1 and supports the car 1. A force in a direction away from the guide rail 2 is applied, and the upper guide roller 7 and the lower guide roller 8 provided on the car frame 6 receive an unbalanced load. In particular, when the car 1 is stopped for a long time, the upper guide roller 7 and the lower guide roller 8 continue to receive a bias load at the same position in the circumferential direction, and the portion is deformed so as to become a flat surface. Become.

  Therefore, in the present embodiment, in order to prevent the above-described deformation, the upper backup mechanism 9 and the lower backup mechanism, which are guide roller load reducing means, are respectively disposed at positions facing the upper guide roller 7 and the lower guide roller 8 with the guide rail 2 interposed therebetween. 10 is provided. In the figure, reference numeral 3 denotes a car door.

  2 to 4 show details of the upper backup mechanism 9. The upper backup mechanism 9 includes an upper backup roller 15 as a movable side contact member, a fixed side contact member, and a taper plate 16 as an auxiliary rail. The upper backup roller 15 is provided at a position facing the upper guide roller 7 in the horizontal direction across the side guide surface 13 of the guide rail 2. More specifically, the upper backup roller 15 is provided on a guide shoe 14 as a support member, like the upper guide roller 7 and the upper shoe roller 11, and has an outer peripheral surface covered with rubber and a bolt / nut. 18 and a bearing (not shown) are rotatably supported. On the other hand, the taper plate 16 is provided at a position facing the side guide surface 13 with the upper backup roller 15 interposed therebetween, and is fixed to the guide rail 2 via a mounting bracket 20 and a mounting plate 21 described later. The guide shoe 14 is screwed and fixed to the car frame 6 through four mounting holes 12 provided in the mounting portion 17.

The outer peripheral surface of the upper backup roller 15 is formed with a large diameter portion 15a and a small diameter portion 15b, and has a so-called stepped roller shape in the axial direction. A taper plate 16 is provided between the guide rail 2 and the car 1, and the diameter of the large-diameter portion 15 a of the upper backup roller 15 is smaller than the diameter of the upper guide roller 7 because of the mounting space. Yes.
The taper plate 16 has an inclined guide surface 19 on the upper side, and is fixed to the guide rail 2 via a mounting bracket 20 and a mounting plate 21. Specifically, the taper plate 16 is fastened to the mounting bracket 20 with two sets of bolts and nuts 22, and the mounting bracket 20 is attached to the flange portion 23 of the angle-shaped mounting plate 21 with three sets of bolts and nuts 24. Are fastened together. Further, the mounting plate 21 is fastened and fixed to the guide rail 2 by four stoppers 26 engaged with the rail flange portion 25 of the guide rail 2 and four sets of bolts and nuts 27.
As will be described later, when the car 1 stops at the lowest floor, as the upper backup roller 15 descends, the small diameter portion 15b rolls while contacting the inclined guide surface 19 of the taper plate 16, thereby As a result, a force for separating the upper guide roller 7 from the guide rail 2 is generated.

  As shown in FIG. 4, the upper guide roller 7 and the upper shoe roller 11 are in contact with the guide rail 2 respectively, while the upper backup roller 15 is brought into contact with the guide rail 2 when it starts to hit the inclined guide surface 19 as it descends. When the car 1 is further lowered and the upper backup roller 15 gets over the inclined guide surface 19 and rides on the flat portion 29, the car 1 approaches and comes into contact with the side guide surface 13 of the guide rail 2. When the upper backup roller 15 approaches the side guide surface 13, the guide shoe 14 provided with the upper backup roller 15 moves to the left in the figure and the upper guide roller 7 moves away from the side guide surface 13. become. This is nothing but the car frame 6 and the car 1 to which the guide shoe 14 is fixed as shown in FIG. 1 move in the same direction. Therefore, a force to push back the car 1 in the opposite direction, that is, a force to bring the upper end of the car 1 closer to the guide rail 2 is generated, and the upper guide roller 7 is separated from the side guide surface 13 as described above. The load received by the upper guide roller 7 can be eliminated. That is, the uneven load applied to the upper guide roller 7 when the car 1 is stopped for a long time and the deformation of the upper guide roller 7 based thereon are prevented in advance.

  When the car 1 descends, the lower guide roller 8 also passes in the vicinity of the taper plate 16 before the upper backup roller 15 rides on the taper plate 16 as shown in FIG. Since the trajectory accompanying the lowering of the upper backup roller 15 is set in advance so as to be at the same position as that of the large diameter portion 15a of the upper backup roller 15, the lower guide roller 8 does not interfere with the taper plate 16.

  Further, a shim plate 28 for finely adjusting the mounting position of the taper plate 16 is sandwiched between the taper plate 16 and the mounting bracket 20, and the guide plate can be changed by changing the shim plate 28 to one having a different thickness. The protrusion amount of the taper plate 16 toward the side guide surface 13 of the rail 2 can be adjusted.

  The taper plate 16 has a flat portion 29 formed continuously to the inclined guide surface 19, and the small diameter portion 15 b rolls on the flat portion 29 even if a slight error occurs in the stop position of the car 1. Therefore, the distance that the upper backup roller 15 moves toward the side guide surface 13 (hereinafter simply referred to as the movement distance) can be kept constant.

On the other hand, as shown in FIGS. 5 to 7, the lower backup mechanism 10 includes a lower backup roller 41 as a movable contact member and a movable plate 46 as a fixed contact member and an auxiliary rail. The relative positional relationship between the lower guide roller 8, the lower backup roller 41, and the movable plate 46 is opposite to that of the upper backup mechanism 9.
The lower guide roller 8, the lower shoe roller 43, and the lower backup roller 41 have the same structure as that of the upper part of the car 1, and the lower backup roller 41 has a large diameter portion 41a and a small diameter portion 41b. Has been.

  The guide shoe 42 is screwed and fixed to the car frame 6 through four mounting holes 39 provided in the mounting portion 38.

  The movable plate 46 has an inclined guide surface 47 and is fixed to the guide rail 2 via a mounting plate 48, a mounting bracket 49 and a mounting flange 50. Specifically, the upper end portion of the movable plate 46 is rotatably supported by a bolt / nut 52 on a mounting flange 50 protruding from an angle-shaped mounting bracket 49. The mounting bracket 49 is welded to a substantially U-shaped mounting plate 48, and the mounting plate 48 is composed of four sets of metal plates 53 and four sets of latches 25 engaged with the rail flange portion 25 of the guide rail 2. The bolts and nuts 54 are fastened to the guide rail 2 together. Reference numeral 55 denotes a reinforcing plate attached to the mounting bracket 49.

  As shown in FIG. 6, a countersunk bolt 63a protrudes from the back of the lower end of the movable plate 46 and penetrates the mounting bracket 49. Around the bolt 63a, there is a compression coil as an elastic means. A spring 62 is provided. As a result, the movable plate 46 is always urged toward the guide rail 2 with the bolt / nut 52 as the rotation center, and as a result, the inclined guide surface 47 is provided. The bolt 63a is fixed to the movable plate 46 by a nut 63b. Two adjusting nuts 64 are screwed onto the bolt 63a, and the rotation force of the adjusting nut 64 allows the spring force of the compression coil spring 62 and the inclination of the inclined guide surface 47 to be adjusted.

  Further, when the car 1 descends and stops at the lowest floor, as with the upper backup mechanism 9, the lower backup roller 41 rolls on the inclined guide surface 47, whereby the side guide surface 13 of the guide rail 2. Will approach and abut. When the lower backup roller 41 approaches the side guide surface 13, the lower guide roller 8 is separated from the side guide surface 13 in the same manner as the upper backup mechanism 9. As described above, when the lower guide roller 8 is separated from the side guide surface 13, the load received by the lower guide roller 8 can be eliminated. That is, the eccentric load applied to the lower guide roller 8 when the car 1 is stopped for a long time and the deformation of the lower guide roller 8 based thereon are prevented.

  Here, unlike the taper plate 16, the movable plate 46 is a movable type urged by the compression coil spring 62, and the spring force of the compression coil spring 62 is large enough to counteract the weight of the car 1. Is set in advance. Therefore, in the lower backup mechanism 9, the force for separating the lower guide roller 8 from the side guide surface 13 depends entirely on the spring force of the compression coil spring 62.

  Unlike the upper backup mechanism 9, the lower backup mechanism 10 does not require the upper guide roller 7 to pass through the vicinity of the movable plate 46. Therefore, it is not necessary to form the small diameter portion 41b in the lower backup roller 41. Therefore, the lower backup roller 41 is the same as the upper backup roller 15. Then, as shown in FIG. 7, the large-diameter portion 41 a is in contact with the movable plate 46.

  Further, the moving distance of the lower backup roller 41 in contact with the inclined guide surface 47 on the movable plate 46 side can be easily adjusted by changing the inclination degree of the inclined guide surface 47 by rotating the adjustment nut 64. Adjustment by exchanging the shim plate 28 as in the backup mechanism 9 is not required.

  Accordingly, it is possible to cope with a case where the work space when the car 1 is stopped at the lowest floor is narrow and it is difficult to finely adjust the contact condition using the shim plate 28 or the like. Of course, the structure similar to that of the upper backup mechanism 9 using the taper plate 16 may be used as long as the mounting space can be secured.

  Therefore, according to the vibration suppression device having the upper and lower backup mechanisms 9 and 10 configured as described above as the main element, when the car 1 descends from the upper floor and stops at the lowermost floor, the upper backup roller When 15 is in contact with the inclined guide surface 47 of the taper plate 16 and the lower backup roller 41 is in contact with the inclined guide surface 47 of the movable plate 46, the upper backup mechanism 9 and the lower backup mechanism 10 are inclined in the direction in which the car 1 is tilted. Apply force from the opposite direction. As a result, the upper guide roller 7 and the lower guide roller 8 can be separated from the guide rail 2, and the upper and lower guide rollers 7, 8 are more effectively prevented from being deformed.

  In the present embodiment, the structure for reducing the load on the upper guide roller 7 and the lower guide roller 8 when the car 1 stops on the lowest floor in the elevator has been described. However, the present invention is not limited to this. In the present invention, the backup mechanism 9 or 10 can be used even when the car 1 stops on the top floor.

Next, FIG. 8 shows a second embodiment of an elevator vibration suppression device according to the present invention. In FIG. 8, parts that are the same as those in the first embodiment are given the same reference numerals.
As shown in FIG. 8, a slide cam 71 having an inclined cam surface 71a as a movable side contact member is fixed at a position as far as possible from the guide rail 2 in the lower end portion of the car 1, A drive cam 72 having an inclined cam surface 72a similar to that on the slide cam 71 side is fixed to the wall surface 73 on the hoistway side as a stationary contact member. The slide cam 71 and the drive cam 72 form guide roller load reducing means, and when the car 1 stops on the lowest floor, both the inclined cam surfaces 71a and 72a ride on each other while being in sliding contact with each other, A force that causes the upper end of the car 1 to approach the guide rail 2 from the direction opposite to the direction in which the car 1 falls is applied. Thereby, the upper guide roller 7 and the lower guide roller 8 of the car 1 are separated from the guide rail 2, and the load applied to the upper guide roller 7 and the lower guide roller 8 is reduced as in the first embodiment. Can do.

When the inclined cam surfaces 71a and 71b are slidably contacted as described above, it is preferable that a material having high slidability such as nylon or Teflon (registered trademark) is formed on the slidable contact surface.
As described above, the second embodiment can achieve the intended purpose as in the first embodiment. In particular, in the second embodiment, since it is sufficient to provide the slide cam 71 and the drive cam 72, there is an advantage that the number of parts can be extremely small, for example, when an existing elevator is improved.

  Therefore, according to the first and second embodiments, the load applied to the upper guide roller 7 and the lower guide roller 8 automatically when the car 1 stops under a purely mechanically simple configuration. Therefore, it is possible to prevent the upper guide roller 7 and the lower guide roller 8 from being deformed. Therefore, it is possible to suppress vibration in the car 1 that is moving up and down due to the deformation of the upper and lower guide rollers 7 and 8.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective schematic view showing an overall configuration of an elevator car provided with a vibration suppressing device as a first embodiment of the present invention. It is the expansion perspective view which showed the detail of the A section containing the upper backup mechanism which is a main element of the vibration suppression apparatus in FIG. It is a C direction arrow directional view of FIG. It is a D direction arrow line view of FIG. It is the expansion perspective view which showed the detail of the B section containing the lower backup mechanism which is the main elements of the vibration suppression apparatus in FIG. FIG. 6 is a view in the direction of arrow E in FIG. 5. FIG. 5 is a view taken in the direction of arrow F in FIG. It is the perspective schematic which showed the whole structure of the elevator car provided with the vibration suppression apparatus as the 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Car 2 ... Guide rail 7 ... Upper guide roller 8 ... Lower guide roller 9 ... Upper backup mechanism (guide roller load reduction means)
10 ... Lower backup mechanism (guide roller load reduction means)
14 ... Guide shoe (support member)
15 ... Upper backup roller (movable contact member)
16 ... Taper plate (auxiliary rail, stationary contact member)
19 ... Inclined guide surface 41 ... Lower backup roller (movable contact member)
42 ... Guide shoe (support member)
46. Movable plate (auxiliary rail, fixed contact member)
47 ... Inclined guide surface 62 ... Compression coil spring (elastic means)
71 ... slide cam (movable contact member)
72 ... Drive cam (fixed side contact member)

Claims (5)

Back plunger type equipped with guide roller load reducing means to reduce the load on the guide roller by applying force in the direction away from the guide rail to the guide rollers provided at the upper and lower parts of the car when the elevator car stops Or in the side fork type elevator vibration suppression device,
The guide roller load reducing means applies a force in a direction away from the guide rail to the guide roller when the movable side abutting member provided on a part of the car rides on the stationary side abutting member. An elevator vibration suppression device characterized by the above. The guide roller load reducing means is provided independently for each guide roller provided at the top and bottom of the car,
At least the upper guide roller load reducing means includes a backup roller provided at a position facing the guide roller across the guide rail, and an auxiliary rail that is fixed to the guide rail and includes an inclined guide surface. ,
2. The elevator according to claim 1, wherein a force in a direction away from the guide rail is applied to the guide roller by the backup roller rolling while being in contact with the inclined guide surface. Vibration suppression device. The lower guide roller load reducing means includes a backup roller provided at a position facing the guide roller across the guide rail, an attached guide rail, an inclined guide surface, and approaches the guide rail by elastic means. It consists of a movable auxiliary rail biased in the direction,
3. The elevator according to claim 2, wherein a force in a direction away from the guide rail is applied to the guide roller by rolling while the backup roller is in contact with the inclined guide surface. Vibration suppression device.   By rolling the backup roller in contact with the inclined guide surface, the backup roller is brought into contact with the guide rail while applying a force in a direction away from the guide rail to the guide roller. The elevator vibration suppression device according to claim 2 or 3, wherein The vibration of an elevator according to any one of claims 2 to 4, wherein the guide roller and the backup roller are attached to the same support member and are provided at positions facing each other in the horizontal direction with the guide rail interposed therebetween. Suppression device.

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