JPWO2019073560A1 - Elevator and its balance wheel guide shoe - Google Patents

Abstract

In the elevator, the balance wheel device includes a balance wheel guide rail, a balance wheel frame that can move up and down along the balance wheel guide rail, and a fishing that moves along the balance wheel guide rail while touching the balance wheel guide rail. It has a vehicle guide shoe and a balance vehicle main body. The coefficient of friction between the balance wheel guide shoe and the balance wheel guide rail when the balance wheel guide shoe is raised is equal to the friction coefficient between the balance wheel guide shoe and the balance wheel guide rail when the balance wheel guide shoe is lowered. It is larger than the friction coefficient.

Description

  The present invention relates to an elevator in which a balancing vehicle device is provided at the lower part of a hoistway, and a balancing vehicle guide shoe provided in the balancing vehicle device.

  In conventional elevators, the first end of the compen- sion rope is connected to the lower part of the car. Moreover, the 2nd end part of the compensation rope is connected to the lower part of a counterweight. Thereby, the compen- sion rope is suspended from the car and the counterweight.

  A pair of guide rails are erected at the lower part of the hoistway. A sheave frame is provided between the pair of guide rails. The sheave frame can move up and down along the pair of guide rails. The sheave frame is provided with a compensatory sheave. The middle part of the compen- sion rope is wound around the compensatory (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 5-24769

  In the conventional elevators as described above, the compensation may rise temporarily when passengers get on and off the car and when the car is stopped in an emergency. For this reason, it is necessary to ensure sufficient space above the compensatory so that it does not interfere with other devices even if the compensatory rises. This lengthens the guide rail for the compensatory and increases the pit depth dimension of the hoistway.

  The present invention has been made to solve the above-described problems, and an elevator capable of reducing the length of a balance wheel guide rail to reduce the pit depth and the balance wheel. The purpose is to obtain a guide shoe.

An elevator according to the present invention includes a car that lifts and lowers in a hoistway, a suspension that suspends a car, a flexible compensator that is suspended from the car and compensates for a weight imbalance of the suspension, and a hoistway It is provided at the lower part and is equipped with a balance wheel device that applies tension to the compensating body. The balance wheel device is a balance wheel guide rail, a balance wheel frame that can move up and down along the balance wheel guide rail, A balance wheel guide shoe that is provided in the vehicle frame and moves along the balance wheel guide rail while being in contact with the balance wheel guide rail, and is provided in the balance wheel frame, and a compensator is wound thereon. The coefficient of friction between the balance wheel guide shoe and the balance wheel guide rail when the balance wheel guide shoe is lowered is the fishing coefficient when the balance wheel guide shoe is lowered. Between the car guide shoe and the car guide rail It is greater than the friction coefficient.
In addition, the elevator balance wheel guide shoe according to the present invention moves along the balance wheel guide rail while being in contact with the balance wheel guide rail, thereby balancing the lift of the balance wheel body. The surface of the vehicle guide shoe that contacts the balance wheel guide rail has a coefficient of friction with the balance wheel guide rail when rising along the balance wheel guide rail. It is comprised so that it may become larger than a friction coefficient between the balance wheel guide rails at the time of descending.

  In the elevator according to the present invention and the balance wheel guide shoe, the coefficient of friction between the balance wheel guide shoe and the balance wheel guide rail when the balance wheel guide shoe is raised is lowered by the balance wheel guide shoe. It is larger than the coefficient of friction between the balance wheel guide shoe and the balance wheel guide rail. For this reason, the length of the balance wheel guide rail can be reduced to reduce the pit depth dimension.

1 is a schematic configuration diagram illustrating an example of an elevator to which the present invention is applied. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing an elevator balancing vehicle apparatus according to Embodiment 1 of the present invention; It is a side view which shows the balancing vehicle apparatus of FIG. It is sectional drawing which follows the IV-IV line of FIG. It is sectional drawing which follows the VV line of FIG. It is sectional drawing which shows the 1st modification of the balance wheel guide shoe of FIG. It is sectional drawing which shows the 2nd modification of the balance wheel guide shoe of FIG. It is sectional drawing of the balance wheel guide shoe by Embodiment 2 of this invention.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a schematic configuration diagram showing an example of an elevator to which the present invention is applied. In the figure, a machine room 2 is provided in the upper part of the hoistway 1. In the machine room 2, a hoisting machine 3, a deflecting wheel 4, and a control device 5 are installed. The hoisting machine 3 has a drive sheave 6, a hoisting machine motor, and a hoisting machine brake 7. The hoist motor rotates the drive sheave 6. The hoisting machine brake is an electromagnetic brake that brakes the rotation of the drive sheave 6.

  A suspension body 8 is wound around the drive sheave 6 and the deflecting wheel 4. As the suspension body 8, a plurality of ropes or a plurality of belts are used. A car 9 is connected to the first end of the suspension 8. A counterweight 10 is connected to the second end of the suspension 8.

  The car 9 and the counterweight 10 are suspended in the hoistway 1 by the suspension body 8. Further, the car 9 and the counterweight 10 move up and down in the hoistway 1 by rotating the drive sheave 6. The control device 5 moves the car 9 up and down at a set speed by controlling the hoisting machine 3.

  A pair of car guide rails 11 and a pair of counterweight guide rails 12 are installed in the hoistway 1. The pair of car guide rails 11 guide the raising and lowering of the car 9. The pair of counterweight guide rails 12 guide the lifting and lowering of the counterweight 10. A car buffer 13 and a counterweight buffer 14 are installed at the bottom of the hoistway 1.

  A flexible compensator 15 is suspended between the lower part of the car 9 and the lower part of the counterweight 10. The compensator 15 compensates for the weight imbalance of the suspension 8 on one side and the other side of the drive sheave 6 and the deflector wheel 4. As the compensator 15, for example, a plurality of compensation ropes or a plurality of belts are used.

  At the lower part of the hoistway 1, a balancing wheel device 16 that applies tension to the compensating body 15 is provided. The balance wheel device 16 has a pair of balance wheel bodies 17. A compensator 15 is wound around the pair of balance wheel bodies 17.

  The balance vehicle body 17 can be moved downward in accordance with the aging of the suspension body 8 and the suspension compensation body 15. As a result, the tension applied to the suspension compensator 15 does not change with the passage of time of the suspension 8 and the suspension compensator 15.

  2 is a front view showing an elevator balancing vehicle device 16 according to Embodiment 1 of the present invention, and FIG. 3 is a side view showing the balancing vehicle device 16 of FIG. In FIG. 1, the two balance wheel bodies 17 are used. However, in FIGS. 2 and 3, the balance wheel device 16 having only one balance wheel body 17 will be described.

  In addition to the balance wheel body 17, the balance wheel device 16 includes a pair of balance wheel guide rails 18a and 18b, a balance wheel frame 19, and a pair of balance wheel guide shoes 20a and 20b. The balance wheel guide rails 18a and 18b are vertically set on the floor of the hoistway pit at intervals from each other.

  The balance wheel frame 19 is disposed between the balance wheel guide rails 18a and 18b. The balance wheel frame 19 can move up and down along the balance wheel guide rails 18a and 18b. Furthermore, the balance wheel frame 19 includes a pair of rectangular frame plates 21 a and 21 b and a horizontal balance wheel shaft 22.

  The frame plates 21a and 21b face each other. The balancing axle 22 is fixed between the frame plates 21a and 21b. Further, the balance axle 22 penetrates the balance wheel body 17. The balance wheel body 17 is rotatable around the balance wheel shaft 22.

  Each balance wheel guide shoe 20a, 20b is fixed to a corresponding frame plate 21a, 21b. Each balance wheel guide shoe 20a, 20b moves along the corresponding balance wheel guide rail 18a, 18b while contacting the corresponding balance wheel guide rail 18a, 18b.

  The balance vehicle main body 17 moves smoothly downward corresponding to the aging of the suspension body 8 and the compensation body 15. At this time, the balance wheel frame 19 moves downward along the balance wheel guide rails 18a and 18b. For this reason, a balance wheel run-by dimension h is secured between the balance wheel frame 19 and the floor surface of the hoistway pit, as shown in FIG. The balance wheel run-by dimension h is a dimension between the balance wheel frame 19 and the floor surface of the hoistway pit.

  Further, when the car 9 collides with the car shock absorber 13 and descends to the position indicated by a two-dot chain line in FIG. 3 due to some cause, the balance wheel body 17 jumps up, the balance wheel frame 19 and the balance wheel guide shoe. There is a possibility that 20a and 20b rise to the position of the two-dot chain line in FIG. Also in such a case, the pit depth dimension H is ensured so that the balance wheel frame 19 and the balance wheel guide shoes 20a and 20b do not interfere with the car 9. The pit depth dimension H is a dimension from the floor surface of the lowest floor landing to the bottom of the hoistway.

  4 is a sectional view taken along line IV-IV in FIG. 2, and FIG. 5 is a sectional view taken along line VV in FIG. 4 and 5 show the balance wheel guide shoe 20a and the balance wheel guide rail 18a, the balance wheel guide shoe 20b and the balance wheel guide rail 18b are configured similarly.

  Although omitted in FIG. 4, a plurality of bristle protrusions 23 are provided on the surfaces of the balance wheel guide shoes 20a, 20b that contact the balance wheel guide rails 18a, 18b. Each protrusion 23 protrudes obliquely upward from the balance wheel guide shoes 20a, 20b. As a material of each protrusion 23, for example, natural material hair or synthetic resin can be used.

  A resistance force is always applied between the balance wheel guide shoes 20a and 20b and the balance wheel guide rails 18a and 18b.

  Here, the coefficient of friction between the balance wheel guide shoes 20a, 20b and the balance wheel guide rails 18a, 18b when the balance wheel guide shoes 20a, 20b rise along the balance wheel guide rails 18a, 18b. Is μu. Further, the coefficient of friction between the balance wheel guide shoes 20a and 20b and the balance wheel guide rails 18a and 18b when the balance wheel guide shoes 20a and 20b descend along the balance wheel guide rails 18a and 18b. μd.

  In the balance wheel guide shoes 20a and 20b of the first embodiment, the friction coefficient μu is larger than the friction coefficient μd. That is, the resistance force that acts when the counterbalanced vehicle body 17 moves upward is greater than the resistance force that acts when the balance wheel body 17 moves downward.

  As described above, the surfaces of the balance wheel guide shoes 20a and 20b that are in contact with the balance wheel guide rails 18a and 18b are configured such that the friction coefficient μu is larger than the friction coefficient μd. For this reason, the amount of jumping of the balance wheel guide shoes 20a, 20b can be suppressed. Therefore, compared with the case where the friction coefficient μu is equal to the friction coefficient μd, the length of the balance wheel guide rails 18a and 18b can be reduced, and the pit depth dimension H can be reduced.

  Further, the configuration in which the coefficient of friction is different between when the vehicle is raised and when it is lowered is applied not to the side of the balanced vehicle guide rails 18a and 18b but to the side of the balanced vehicle guide shoes 20a and 20b. For this reason, the range which performs the process for making a friction coefficient different at the time of a raise and the time of a fall can be suppressed, and a structure can be simplified.

  Furthermore, since the hair-like protrusions 23 are provided on the balance wheel guide shoes 20a and 20b, the friction coefficient can be made different between when it is raised and when it is lowered.

  In addition, the structure as shown in FIG. 6 may be sufficient as the structure which makes a friction coefficient different at the time of a raise and a fall, for example. In FIG. 6, the cross-sectional shape along the up-down direction of the surface which contacts the balance wheel guide rails 18a and 18b of the balance wheel guide shoes 20a and 20b is a sawtooth shape. Also. In FIG. 6, the upper surface of each saw tooth is horizontal, and the lower surface protrudes obliquely upward.

  Moreover, the structure as shown in FIG. 7 may be sufficient as the structure which makes a friction coefficient different at the time of a raise and a fall, for example. In FIG. 7, a plurality of scales 24 are provided on the surfaces of the balance wheel guide shoes 20a, 20b that are in contact with the balance wheel guide rails 18a, 18b. Moreover, in FIG. 7, when the two scales 24 adjacent to each other in the vertical direction are viewed, the upper end of the lower scale 24 is superimposed on the side of the balance wheel guide rails 18a and 18b on the lower end of the upper scale 24. It has been.

  Furthermore, the configuration in which the friction coefficient is different between when the vehicle is lifted and when it is lowered may be applied to the entire surface in contact with the balance wheel guide rails 18a and 18b or may be partially applied.

Embodiment 2. FIG.
Next, FIG. 8 is a cross-sectional view of a counterbalanced guide shoe according to Embodiment 2 of the present invention, and shows a cross section corresponding to a cross section taken along line IV-IV in FIG. Each balance wheel guide shoe 20a, 20b of the second embodiment has a shoe body 25 having a U-shaped cross section and a sheet-like contact body 26. The shoe body 25 is fixed to the balancing wheel frame 19.

  The contact body 26 is attached to the inner surface of the shoe main body 25 and contacts the balance wheel guide rails 18a and 18b. The surface of the contact body 26 that contacts the balance wheel guide rails 18a and 18b is processed in the same manner as in the first embodiment. Other configurations are the same as those in the first embodiment.

  As described above, the process of making the friction coefficient different between when rising and when lowering may be performed on the contact body 26 which is separate from the shoe main body 25, and the same effect as in the first embodiment is achieved.

  Alternatively, the contact body 26 can be retrofitted using the existing balance wheel guide shoe as the shoe body 25.

In the above example, the configuration in which the coefficient of friction is different between when the vehicle is raised and when the vehicle is lowered is applied to the balance vehicle guide shoe side, but may be applied to the balance vehicle guide rail side. In this case, it may be applied to the entire balance wheel guide rail or may be applied partially. For example, you may apply the structure which makes a friction coefficient different in the area | region above a certain height of the balance wheel guide rail at the time of a raise and a fall. In addition, the coefficient of friction when the balance wheel guide shoe is raised may be gradually increased upward.
In the above example, a balancing vehicle apparatus having a single balancing vehicle body is shown. However, the number of balance wheel bodies is not limited to this, and the present invention can be applied to a balance wheel device having, for example, a two-wheel or four-wheel balance wheel body.
Furthermore, the number of balance wheel guide shoes is not limited to two. For example, four balance wheel guide shoes may be provided in the balance wheel frame.
Furthermore, the layout of the entire elevator apparatus is not limited to the layout of FIG. For example, the present invention can be applied to a 2: 1 roping type elevator apparatus.
Further, the present invention can be applied to various types of elevators such as machine room-less elevators, double deck elevators, and one-shaft multi-car elevators. The one-shaft multi-car system is a system in which the upper car and the lower car arranged directly below the upper car are independently raised and lowered on a common hoistway.

  DESCRIPTION OF SYMBOLS 1 Hoistway, 8 Suspension body, 9 Car, 15 Compensation body, 16 Balance wheel apparatus, 17 Balance wheel main body, 18a, 18b Balance wheel guide rail, 19 Balance wheel frame, 20a, 20b Balance wheel guide shoe, 23 Protrusions, 24 Scales, 25 Shoe body, 26 Contact body.

Claims (7)

A car that goes up and down in the hoistway,
A suspension for hanging the car,
A flexible compensator that is suspended from the car and compensates for a weight imbalance of the suspension, and a balance wheel device that is provided at a lower portion of the hoistway and applies tension to the compensator. Prepared,
The balancing vehicle device is:
Balance car guide rail,
A balance wheel frame movable up and down along the balance wheel guide rail;
A balance wheel guide shoe that is provided in the balance wheel frame, moves along the balance wheel guide rail while contacting the balance wheel guide rail, and is provided in the balance wheel frame; and the compensation It has a balance car body around which the body is wrapped,
The coefficient of friction between the balance wheel guide shoe and the balance wheel guide rail when the balance wheel guide shoe is raised is the friction coefficient between the balance wheel guide shoe and the balance wheel guide shoe when the balance wheel guide shoe is lowered. The elevator which is larger than the coefficient of friction between the balance wheel guide rails.   2. The elevator according to claim 1, wherein a plurality of hairy protrusions projecting obliquely upward are provided on a surface of the balance wheel guide shoe that contacts the balance wheel guide rail.   2. The elevator according to claim 1, wherein a cross-sectional shape along a vertical direction of a surface contacting the balance wheel guide rail of the balance wheel guide shoe is a sawtooth shape.   The elevator according to claim 1, wherein a plurality of scales are provided on a surface of the balance wheel guide shoe that contacts the balance wheel guide rail. The balance wheel guide shoe is
A shoe body provided on the balance wheel frame;
The elevator according to any one of claims 1 to 4, further comprising: a contact body attached to the shoe main body and in contact with the balance wheel guide rail. A balance wheel guide shoe of an elevator that guides the vertical movement of the balance wheel body by moving along the balance wheel guide rail while contacting the balance wheel guide rail,
When the coefficient of friction between the surface contacting the balance wheel guide rail and the balance wheel guide rail when rising along the balance wheel guide rail is lowered along the balance wheel guide rail An elevator balance wheel guide shoe configured to be larger than a coefficient of friction with the balance wheel guide rail. The shoe body,
The elevator balance wheel guide shoe according to claim 6, further comprising: a contact body attached to the shoe body and in contact with the balance wheel guide rail.

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