JP4578957B2 - Elevator balance weight device - Google Patents

Description

  The present invention relates to an improvement of an elevator counterweight device.

  In a rope-type elevator in which a car moves up and down via a main rope wound around a driving sheave, the shaking and vibration of the car reduce the ride comfort of the passenger.

  Various attempts have been made to reduce the vibration and vibration of the car. For example, a car is provided with a vibration isolator to reduce the vibration of the car room itself.

  In a rope-type elevator, the car is connected to the counterweight via the main rope, and the vibration and vibration of the counterweight are transmitted to the car via the main rope. It is indispensable for improving the ride comfort of the passengers, and various measures for reducing the weight and vibration of the counterweight have been proposed.

  Various factors can be considered for the occurrence of vibration and vibration on the counterweight device side.

  The weight change of the car itself, that is, the load fluctuation itself, is transmitted to the counterweight device via the main rope and may cause shaking and vibration to the counterweight device. And the main rope itself may sway, and the main rope may be slightly expanded and contracted in the longitudinal direction.

  Moreover, in a 1: 1 roping rope type elevator, a compensating rope (balanced rope) is connected between the car and the balancing weight device. It is not uncommon to shake or vibrate.

  In any case, the swing and vibration on the counterweight device side also cause the car to vibrate via the main rope, so that it is required to reduce the swing and vibration on the counterweight side.

  In order to reduce the shaking and vibration of the counterweight device itself, a counterweight device having the configuration shown in FIG. 11 has been proposed.

  In the conventional counterweight device, the counterweight frame 1 is separated into a first frame 1A containing the first weight 2 and a second frame 1B containing the second weight 3; The first frame 1 </ b> A and the second frame 1 </ b> B are connected in a parallel arrangement of elastic bodies 41 and 42 made of springs or the like and the damper 5, and the elastic bodies 41 and 42 and the damper 5 serve as a dynamic vibration absorber. It is formed so as to suppress vibration (see, for example, Patent Document 1).

In FIG. 11, the first frame 1A is connected to the main rope 6 via the shackle rod 6a, and the compensating rope 7 is connected to the second frame 1B below.
JP-A-6-1003003

  The conventional counterweight device is configured by separating the device itself into a first frame 1A containing a first weight 2 and a second frame 1B containing a second weight 3; The separated first weight 2 and second weight 3 are connected by elastic bodies 41 and 42 such as springs and the damper 5.

  Further, the elastic bodies 41 and 42 and the damper 5 constituting the dynamic vibration absorber generally have excellent durability in the compression direction, but avoid inferior durability against continuous load in the extension direction. I can't.

  Therefore, as in the conventional counterweight device, the second weight 3 and the compensating rope 7 are suspended below and a load is always applied to the elastic bodies 41 and 42 and the damper 5 in the extending direction. The function as a dynamic vibration absorber is deteriorated due to secular change or the like, or the elastic bodies 41 and 42 and the damper 5 are damaged by some mechanical impact, so that the second frame 1B is separated from the first frame 1A. There was a risk of withdrawal.

  Therefore, the present invention avoids the separation of the first frame body and the second frame body due to breakage of the elastic body and the like, and swings in the horizontal direction with respect to the weight supported via the elastic body. An object of the present invention is to provide a safe and low-weight elevator balance weight device by performing smooth vertical movement while limiting.

According to the present invention , the first and second weights are accommodated in one frame body to which the sheave is attached, and the sheave is connected to the frame body via an elastic body disposed on the upper side, and the lower side An elevator counterweight device configured to fix a first weight, and the first weight is locked to a drop-off preventing member fixed to the frame body and is restricted from swinging in a horizontal direction. A slip member is interposed between the first weight and the drop-off preventing member.

As described above, according to the present invention , since both the first weight and the second weight are accommodated in one frame, one of the first weight and the second weight is used. The first weight that moves up and down by the support through the elastic body is locked to the drop-off prevention member fixed to the frame body via the sliding member, so that The elevator can be smoothly moved up and down while being restricted in swinging in the direction, and a safe and low-weight elevator balancing device can be provided without inadvertent shaking or vibration.

  Hereinafter, an embodiment of an elevator weight device according to the present invention will be described in detail with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same structure as the conventional elevator weighting apparatus shown in FIG. 11, and detailed description is abbreviate | omitted.

  FIG. 1 is a partially cutaway front view according to a first embodiment in which an elevator counterweight device according to the present invention is employed in a 1: 1 roping rope type elevator, and FIG. 2 is a cross-sectional view along line AA in FIG. FIG. 3 is an enlarged view of a main part of FIG.

  The elevator counterweight device of the first embodiment includes one frame 1, first and second weights 2 and 3 housed in the frame 1 and arranged in the vertical direction, and the first And elastic bodies 41 and 42 and a damper 5 arranged between the second weights 2 and 3.

  The first and second weights 2 and 3 arranged in the vertical direction are each made of a laminated body of weight members formed in a plate shape such as a metal plate, and the elastic bodies 41 and 41 are made of a coil spring, rubber or the like. It is comprised with the elastic member.

  The elastic bodies 41 and 42 and the damper 5 constituting the dynamic vibration absorber in parallel arrangement are arranged on the second weight 3 and support the first weight 2 above, and the second weight 3 is a frame body. 1 is supported and fixed to the lower frame. Therefore, the elastic bodies 41 and 42 and the damper 5 are on the second weight 3 and always receive a pressing force in the compression direction while supporting the load of the first weight 2.

  In the first embodiment, the first weight 2 made of a laminate of metal plates is fixed by fixing tools 21 at two locations so as not to collapse due to vibration of the first weight 2 itself.

  As shown in FIG. 1, the fixture 21 of this embodiment comprises a bolt 21a and a nut 21b that is screwed into the bolt 21a and fastened.

  The bolt 21a is inserted into the vertical through-hole formed in the first weight 2 from below, and also communicates with a hollow cylindrical slide member 8 having a small friction coefficient made of an upper synthetic resin member, and a nut. The first weight 2 is fastened and fixed together with the sliding member 8 by 21b.

  Further, as shown in FIGS. 2 and 3, the hollow cylindrical slide member 8 fixed to the fixture 21 together with the first weight 2 is attached to the frame body 1 and prevented from falling off. It is configured to be inserted loosely through the member 9.

  As shown in an enlarged view in FIG. 3, the drop-off prevention member 9 is sandwiched between a bolt 92 a and a nut 92 b through a spacer 91 on the front side (lower side in the drawing) of the frame 1 facing left and right. It is fixed by mounting.

  Thus, the drop-off prevention member 9 is configured to limit the swinging of the first weight 2 in the horizontal direction via the slip member 8 that is loosely inserted while being fixed to the frame body 1.

  Therefore, when the elastic bodies 41 and 42 and the damper 5 that support the load of the first weight 2 expand and contract due to vibration or the like and swing in the vertical direction, the first weight 2 that moves up and down moves the sliding member 8 with a small friction coefficient. The first weight 2 can smoothly move up and down (slide).

  Further, even if the first weight 2 itself swings greatly in the horizontal direction (front / rear / left / right) due to vibrations of the elastic bodies 41 and 42 and the damper 5, the drop-off prevention member 9 causes the slip member 8 to loosen in the through hole. Since it is inserted and locked, the horizontal swing of the first weight 2 is limited, so that unnecessary secondary vibration is prevented from newly occurring.

  Further, in this first embodiment, the drop-off preventing member 9 is formed of an L-shaped single plate, and the spacer 91, the bolt 92a and the nut 92b are used to form side wall edges facing left and right on the front side plate of the frame 1. Since it is configured to be sandwiched and attached, the drop-off prevention member 9 can be easily positioned and attached to the frame body 1 according to the height position of the first weight 2.

  Further, since the nut 21b is fastened and fixed by the bolt 21a penetrating the sliding member 8, if the sliding member 8 needs to be replaced due to wear or damage, the nut 21b can be replaced only by removing the nut 21b. It is possible to perform maintenance and inspection efficiently.

  In the elevator balancing weight device of this embodiment, as shown in FIG. 1, the frame 1 is suspended from the upper side by the main rope 6 via the shackle rod 6a, and the lower end side is connected. The compensating rope 7 is pulled by its own weight.

  In the rope type elevator, the vibration frequency and amplitude of the vibration on the counterweight device side are substantially determined by the length of the main rope 6 between the driving sheave and the counterweight device and the weight (mass) of the counterweight device itself. However, in the counterweight device according to the first embodiment, when the device itself vibrates, the dynamic vibration absorber made up of the elastic bodies 41 and 42 and the damper 5 causes the first weight 2 to swing or vibrate in the vertical direction. Acts to counteract.

  In addition, the weight ratio of the first weight 2 to the entire weight, the spring constants and the elastic coefficients of the elastic bodies 41 and 41 and the damper 5 are set so that the vibration frequency with the largest energy in the vibration mode of the counterweight device itself is greater. It is possible to select a value that covers a wide frequency band and can be effectively absorbed or suppressed.

  In addition, since the first weight 2 is composed of a laminated body such as a metal plate, the ratio of the first weight 2 to the weight of the entire weight can be easily and easily obtained so as to obtain more effective vibration absorption or damping action. Can be selected appropriately.

  As described above, according to the counterweight device according to the first embodiment, the first and second weights 2 and 3 are connected to one frame body through the elastic bodies 41 and 42 and the dampers arranged side by side. Since the elastic bodies 41 and 42 and the damper are always subjected to a compressive load, high safety and good durability can be obtained with a simple configuration.

  In addition, since the first weight 2 is loosely inserted and locked to the drop-off prevention member 9 via the sliding member 8, the elastic bodies 41 and 42 and the damper expand and contract, and based on that, the first weight 2 moves up and down. Even so, since the vertical movement of the first weight 2 is stable and smooth, the generation of noise and unnecessary secondary vibrations is suppressed, and vibrations spreading from the counterweight side to the car side are also reduced. Is done.

  In the first embodiment, the drop-off prevention member 9 is formed of an L-shaped single plate and is configured to be attached between the front side plate edges of the frame 1. In short, the drop-off prevention member 9 is As long as the swinging of the first weight 2 in the horizontal direction can be restricted, the first weight 2 may be attached to a position other than between the front side plates of the frame 1.

  FIGS. 4 and 5 show a second embodiment of an elevator weight device according to the present invention, wherein a drop-off prevention member 9 is attached to opposite side walls of the frame body 1. .

  That is, FIG. 4 is a partially cutaway front view according to a second embodiment of the elevator weight device of the present invention, and FIG. 5 is a cross-sectional view taken along the line AA of FIG. It should be noted that the first embodiment shown in FIGS. 1 to 3 is different from the first embodiment only in the shape and mounting position of the drop-off prevention member 9, and the other configurations are the same, so only the main differences will be described. .

  In the second embodiment, the drop-off preventing member 9 is configured such that a pair of L-shaped brackets 9A and 9B are fixed to the left and right side wall surfaces of the frame 1 by bolts 92a and nuts 92b, respectively.

  A hollow cylindrical slide member 8 is loosely inserted through the through-holes of the pair of L-shaped brackets 9A and 9B, and the slide member 8 is fixed to the first by the fixture 21 in the same manner as in the first embodiment. It is configured to be fastened and fixed together with the weight 2.

  Therefore, with the above configuration, the horizontal swing of the first weight 2 is limited, and even if the sliding member 8 and the drop-off preventing member 9 come into contact with each other when the first weight 2 moves up and down, the sliding is prevented. Due to the small coefficient of friction between the member 8 and the drop-off preventing member 9, the first weight 2 is smoothly moved up and down and the generation of noise is suppressed.

  In addition, according to the structure shown in FIG.4 and FIG.5, since the drop-off prevention member 9 is fixed on the left and right side surfaces of the counterweight, it is possible to eliminate protrusions by bolts on the front and rear surfaces of the counterweight, and the layout of the elevator equipment The construction is advantageous because the counterweight and the other article can be brought close to each other.

  4 and 5, the drop-off prevention member 9 has a structure separated into a pair of L-shaped brackets 9A and 9B, but the L-shaped brackets 9A and 9B are connected at the center. They may be integrated so as to form one U-shaped bracket that is long on the left and right.

  Next, in the elevator balance weight device according to the first and second embodiments, the sliding member 8 is fixed to the first weight 2 side by the fixture 21, but the sliding member 8 is basically elastic. Sliding between the first weight 2 that moves up and down according to the expansion and contraction of the bodies 41 and 42 and the drop-off prevention member 9 that locks the first weight 2 and restricts horizontal swinging. The sliding member 8 may be attached and fixed to the drop-off preventing member 9 as long as it is performed smoothly.

  FIG. 6 is a partially cutaway front view of an elevator weight device according to a third embodiment of the present invention. In the third embodiment shown in FIG. 6, the fall prevention member 9 has a hollow cylindrical slide member. 8 is attached and fixed.

  The first embodiment shown in FIGS. 1 to 3 is mainly different from the first embodiment mainly in the mounting position structure of the sliding member 8, and the other configurations are the same, so only the differences will be particularly described.

  That is, as shown in FIG. 6, the first weight 2 made of a laminate is fixed by screwing the nut 21b into the bolt 21a inserted through and inserted from below, and the bolt 21a protruding upward from the nut 21b. The hollow columnar sliding member 8 fixed to the drop-off preventing member 9 is loosely inserted into this part.

  With the above configuration, even if the bolt 21a on the first weight 2 side and the sliding member 8 come into contact with each other due to the vertical movement of the first weight 2, the small friction coefficient between the bolt 21a and the sliding member 8 The first weight 2 moves up and down smoothly, and noise generation and the like are suppressed.

  In the third embodiment, the slip member 8 is attached and fixed to the drop prevention member 9 having the structure shown in the first embodiment. However, the slip member 8 has the structure shown in the second embodiment. It can also be configured to be mounted on.

  FIG. 7 is a partially cutaway front view showing a counterweight device for an elevator according to a fourth embodiment in which the sliding member 8 is attached to the drop-off prevention member 9 having the structure shown in the second embodiment. It is.

  That is, as shown in FIG. 7, the hollow cylindrical slide member 8 is attached and fixed to the pair of L-shaped brackets 9 </ b> A and 9 </ b> B constituting the drop-off preventing member 9.

  The fourth embodiment shown in FIG. 7 is common to the second embodiment shown in FIGS. 4 and 5 in that the drop-off preventing member 9 is constituted by a pair of L-shaped brackets 9A and 9B. 6 is common to the third embodiment shown in FIG. 6 in that the member 8 is attached and fixed to the drop-off prevention member 9 side.

  Accordingly, the first weight 2 is fixed to the drop-off prevention member 9 at the portion of the bolt 21a protruding upward from the nut 21b as shown in FIG. Even if the first weight 2 moves up and down and the bolt 21a and the sliding member 8 come into contact with each other, the bolt 21a and the sliding member 8 are configured. Because of the small friction coefficient between the first weight 2 and the first weight 2, the first weight 2 can move up and down smoothly, and noise generation can be suppressed.

  In the first to fourth embodiments, the first weight 2 made of the laminated body is fixed by the bolt 21a of the fixing tool 21 penetrating. However, the fixing tool 21 is not penetrated by the first weight 2 without passing through the first weight 2. It is also possible to configure so as to fix one weight 2 and to fix the fixture 21 to the drop-off preventing member 9 via the sliding member 8.

  In FIG. 8, the fixture 21 fixes the first weight 2 made of a laminate without penetrating the first weight 2, and the drop-off prevention member 9 locks the fixture 21 via the slide member 8. FIG. 7 is a partially cutaway front view of a fifth embodiment of an elevator counterweight device according to the present invention configured as above.

  That is, as shown in FIG. 8, the fixture 21 includes a pair of left and right U-shaped hanging brackets 211, a pair of holding screw rods 212 penetrating through the upper end of the hanging bracket 211, and these holding screw rods. 212 includes nuts 21c and 21c that are sandwiched and fixed between the upper ends of the hanging bracket 211, and is configured to fix the laminated first weight 2 on the left and right as illustrated.

  In the configuration shown in FIG. 8, a hollow cylindrical shape in which the holding screw rod 212 protruding further upward from the upper nut 21c is side-mounted and fixed to the drop-off prevention member 9 including a pair of left and right L-shaped brackets 9A and 9B. The sliding member 8 is configured to be loosely inserted.

  Even in the fifth embodiment, even if the first weight 2 moves up and down and the holding screw rod 212 and the sliding member 8 come into contact with each other, the small friction coefficient between the holding screw rod 212 and the sliding member 8 causes The first weight 2 can move up and down smoothly and can suppress noise generation.

  In each of the first to fifth embodiments, the elastic bodies 41 and 42 and the damper 5 on which the first weight 2 is placed are disposed on the second weight 3 and supported by the frame 1. The first weight 2 on the bodies 41 and 42 and the damper 5 only needs to be supported by the frame body 1 together with the second weight 3, so the second weight 3 is disposed above the first weight 2. Then, the first weight 2 may be placed on the elastic bodies 41 and 42 and the damper 5 that are placed directly in the frame body 1.

  FIG. 9 shows a sixth embodiment of an elevator weight device according to the present invention in which the first weight 2 is placed on the elastic bodies 41 and 42 and the damper 5 placed on the lower frame of the frame body 1. It is the partially notched front view shown.

  In the sixth embodiment shown in FIG. 9, the first weight 2 and the second weight 3 are arranged upside down with respect to the first embodiment shown in FIGS. The weight 3 is attached and supported above the inside of the frame 1 via the fixtures 3a and 3a, and the first weight 2 is supported by the elastic bodies 41 and 42 and the damper 5 placed on the lower frame of the frame 1. It is configured to be.

  Accordingly, the same components as those shown in FIGS. 1 to 3 are denoted by the same reference numerals and detailed description thereof is omitted, but the elastic bodies 41 and 42 and the damper 5 that support the load of the first weight 2 are provided. Even when the first weight 2 itself expands and contracts due to vibration or the like and swings up and down and left and right, swinging back and forth and right and left is limited by the drop-off preventing member 9, and when swinging up and down, Since the moving first weight 2 is in contact with the drop-off prevention member 9 via the slip member 8, the first weight 2 is smoothly moved up and down by a small coefficient of friction between the slide member 8 and the drop-off prevention member 9. Movement and noise generation are suppressed.

  In addition, although FIG. 9 demonstrated that the 1st weight 2 and the 2nd weight 3 were arrange | positioned upside down compared with the structure of the Example shown in FIG. The upside down arrangement of the weight 2 and the second weight 3 can be similarly applied to the second to sixth embodiments shown in FIGS.

  Next, in the first to sixth embodiments, the description has been given of the rope-type elevator balance weight device configured by 1: 1 roping. However, the balance of the present invention device is also applicable to the 2: 1 roping rope-type elevator. A weight device can be employed.

  FIG. 10 shows a seventh embodiment of a counterweight device according to the present invention applied to an elevator of 2: 1 roping, in which a sheave 10 around which the main rope 6 is wound is arranged in the frame 1. The divided first weights 2A and 2B are screwed and fixed to the left and right lower ends of the plate 10a that supports the rotating shaft of the sheave 10 by the studs 2Aa and 2Ba and nuts 2Ab and 2Bb.

  Then, as in FIGS. 7 and 8, an L-shaped bracket (drop-off prevention member) in which a hollow cylindrical slide member 8 is loosely inserted into the parts of the implantation bolts 2Aa and 2Ba protruding further downward from the nuts 2Ab and 2Bb. 9A and 9B are attached and fixed to the frame 1 in the opposite direction.

  Also in the configuration shown in FIG. 10, since the sliding member 8 fixed to the L-shaped brackets 9A and 9B loosely inserts the implantation bolts 2Aa and 2Ba, the first weights 2A and 2B move smoothly and stably in the vertical direction. It is possible to avoid noise generation.

  In the seventh embodiment shown in FIG. 10, a pair of first and second elastic bodies 41 and 42 and dampers 51 and 52 are provided between the upper surface of the plate 10a and the upper frame of the frame 1. Are attached so as to correspond to the first weights 2A and 2B, respectively.

  Thus, also in the seventh embodiment, the first and second weights 2 (2A, 2B), 3 are both housed and arranged in one frame body 1, and the first weight 2 (2A, 2B) 2B) is configured to always press the first and second elastic bodies 41 and 42 and the first and second dampers 51 and 52, so that the same as in the first to sixth embodiments. A stable vibration absorbing action or vibration damping action can be obtained.

  In each of the embodiments described above, the dynamic vibration absorber is formed by the elastic bodies 41 and 42 and the dampers 5 (51 and 52). However, it is inevitable that the frequency range of the vibration absorbing action is slightly narrowed. However, the damper 5 (51, 52) may be omitted, and only the elastic bodies 41, 42 may be used.

  As described above, according to each of the above-described embodiments, the first weight 2 (2A, 2B) is in contact with the drop-off preventing member 9 via the sliding member 8, and therefore the first weight 2 (2A, 2B). Is capable of smoothly moving up and down while being restricted by horizontal runout in the horizontal direction, and can provide a stable elevator weighting device with less noise.

1 is a partially cutaway front view showing a first embodiment of an elevator counterweight device according to the present invention. It is AA arrow sectional drawing of the counterweight apparatus shown in FIG. FIG. 3 is an enlarged view of a main part of the counterweight device shown in FIG. 2. FIG. 6 is a partially cutaway front view showing a second embodiment of an elevator counterweight device according to the present invention. It is AA arrow sectional drawing of the counterweight apparatus shown in FIG. FIG. 7 is a partially cutaway front view showing a third embodiment of an elevator counterweight device according to the present invention. FIG. 7 is a partially cutaway front view showing a fourth embodiment of an elevator counterweight device according to the present invention. FIG. 7 is a partially cutaway front view showing a fifth embodiment of an elevator counterweight device according to the present invention. It is the partially notched front view which showed the 6th Example of the counterweight apparatus of the elevator by this invention. It is the partially notched front view which showed the 7th Example of the counterweight apparatus of the elevator by this invention. It is the block diagram which showed the balance weight apparatus of the conventional elevator.

Explanation of symbols

1, 1A, 1B Frame 2, 2A, 2B First weight 2Aa, 2Ba Planting bolt 2ab, 2ba Nut 21 Fixing tool 21a Bolt 21b, 21c Nut 211 Hanging bracket 212 Holding screw rod 3 Second weight 3a Mounting tool 41 , 42 Elastic body 5, 51, 52 Damper 6 Main rope 6a Shackle rod 7 Compensating rope 8 Slip member 9 Fall-off prevention member 9A, 9B L-shaped bracket (fall-off prevention member)
91 Spacer 92a Bolt 92b Nut 10 Sheave 10a Plate

Claims (2)

The first and second weights are accommodated in one frame body to which the sheave is mounted, and the sheave is connected to the frame body through an elastic body disposed at the upper side and the first weight is disposed below the first weight. And the first weight is an elevator weight device configured to be locked by a drop-off preventing member fixed to the frame body and to be restricted from swinging in the horizontal direction,
An elevator weight device, wherein a slip member is interposed between the first weight and the drop-off preventing member. The said 1st weight was comprised by the laminated body of the weight member, and the said sliding member was mounted | worn between the fixing tool which connects and fixes the said laminated body, and the said drop-off prevention member. of the elevator counterweight system.

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