JP2016092983A - Elevator unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such a problem of an elevator unit that when the detector of a hoist fails, it is to be replaced by a new detector; however, production of a detector of the same type may be stopped and the detector may be replaced by other type of detector, but since the detector has a shaft for detecting the number of revolutions of the hoist, and the shaft has various shapes, the rotor must be replaced or modified, if the connection of the rotor does not match the shaft of the detector in shape, and whereby the workability deteriorates, the cost increases and the manufacturing period is prolonged.SOLUTION: The hoist of an elevator unit has at least a rotor, a detector and a permanent magnet motor, the detector is fixed to the foundation structure of the hoist, and detects at least the position of magnetic pole of the permanent magnet motor, the rotor has an attachment on the detector side, and the attachment is connected with the detector.SELECTED DRAWING: Figure 2

Description

The present invention relates to an elevator apparatus having a detector that detects the number of rotations of a rotating body of a tension member winding apparatus such as a hoisting machine and a speed governor.

2. Description of the Related Art Conventionally, a traction type elevator having a counterweight and a car that moves up and down in a hoistway is known.
The elevator has a hoisting machine having a drive motor and a rotating body in a machine room or a hoistway. The car and the counterweight are connected like a rope with a tension member such as a rope. The tension member is wound around the rotating body of the hoisting machine, the hoisting machine is driven, and the car is moved up and down. Let
The hoisting machine includes a detector such as an encoder for speed control and car positioning.
When a permanent magnet type motor is used for the drive motor of the hoisting machine, the encoder or the like is also used for magnetic pole alignment of the drive motor.
The elevator has a known speed governor having a rotating body for operating a known safety device.
The speed control device may include a detector such as an encoder for speed control and car positioning. (See Patent Document 3)

The detector such as the encoder has a shaft portion for converting a mechanical displacement amount of rotation into an electric signal.
For example, in the case of a hoisting machine, the detector is fixed to a non-rotating portion such as a base structure, and the shaft portion of the detector is connected to a rotating body to detect the rotational speed and the like. For example, when the shaft portion of the detector is convex, a concave connection portion is formed on the rotating body, and the shaft portion is fitted into the connection portion. Moreover, when the axial part of a detector is concave shape, a convex connection part is formed in a rotary body and the said connection part is inserted by the said axial part.

JP 2004-229498 A JP 2009-154984 A JP 2009-263015 A

When a detector breaks down, it will be replaced with a new detector, but at the time of replacement, the same type of detector has been discontinued and may be difficult to obtain. In addition, in order to reduce costs, it may be desired to replace the detector with another type.
However, the detector has a shaft portion for detecting the number of rotations of the rotating body, but the shaft portion has a convex shape or a concave shape, and the same convex shape or concave shape has a different cross-sectional shape. It has various shapes.
Therefore, replace the detector with a non-identical detector, and if the connecting part of the rotating body does not match the shape of the shaft part of the detector, the connecting part is formed directly on the rotating body. The rotating body had to be modified, resulting in problems such as poor workability, increased costs, and a longer construction period.

The elevator apparatus of the present invention is an elevator having a car that moves up and down in a hoistway.
The elevator has a tension member winding device,
The tension member winding device has at least a rotating body and a detector,
The detector is fixed via a base member of the tension member winding device or a fixing member attached to the base structure,
The rotating body has an attachment on the side facing the detector,
The attachment is connected to the detector.
The elevator apparatus of the present invention has a recess on the side where the rotating body faces the detector,
You may attach the said attachment to the said recessed part.
In the elevator apparatus according to the present invention, the attachment may be detachably attached to the rotating body.
In the elevator apparatus according to the present invention, the attachment may have a concave connection portion coaxial with the rotating body.
In the elevator apparatus according to the present invention, the attachment may have a convex connection portion coaxial with the rotating body.
In the elevator apparatus according to the present invention, the tension member winding device may be a hoisting machine.
In the elevator apparatus according to the present invention, the hoisting machine may include a permanent magnet type electric motor.
In the elevator apparatus according to the present invention, the tension member winding device may be a speed governor.
As for the elevator apparatus of this invention, the said speed control apparatus may have a shaft part in the said rotary body.

According to the present invention, even when the detector of the hoisting machine is replaced with another type of detector, it can be replaced only by replacing small components.

The block diagram of an elevator. 1 is a cross-sectional view of a hoist according to Embodiment 1. FIG. Sectional drawing of the winding machine which concerns on Example 2. FIG. (A) is a rear view of the attachment which concerns on Example 1 and Example 3, (b) is a front view, (c) is a left view, (d) is AA sectional drawing of (b). (A) is a rear view of the attachment which concerns on Example 2 and Example 4, (b) is a front view, (c) is a left view, (d) is BB sectional drawing of (b). The front view of a hoisting machine. The front view of the speed governor which concerns on Example 3 and Example 4. FIG. The left view of the speed governor which concerns on Example 3 and Example 4. FIG. The C section schematic sectional drawing in FIG. 8 of the speed governor which concerns on Example 3. FIG. The C section schematic sectional drawing in FIG. 8 of the speed governor which concerns on Example 4. FIG.

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

As an example of the tension member winding device, a case of a hoisting machine having a permanent magnet motor as a driving motor will be described.
FIG. 1 is a configuration diagram of an elevator according to the invention. FIG. 2 is a sectional view of the hoist according to the first embodiment. 4A to 4D are detailed views of the attachments according to the first and third embodiments. 4A is a rear view of the attachment according to Example 1 and Example 3, FIG. 4B is a front view, FIG. 4C is a left side view, and FIG. 4D is a cross-sectional view taken along line AA in FIG. is there. FIG. 6 is a front view of the hoisting machine.

First, the configuration of the traction elevator will be briefly described with reference to FIG. The car 1 and the counterweight 2 are suspended by a rope 3. The car 1 is guided by the guide rails 8a and 8b and moves up and down in the elevator shaft. The counterweight 2 is guided by the counterweight guide rails 9a and 9b, and moves up and down in the elevator shaft. The rope 3 is wound around the rotating body 7 of the hoisting machine 6, and the car 1 and the counterweight 2 are configured in a vine shape. One end of the rope 3 is fixed to the machine base 10 by fixing means 11. The rope 3 descends from the fixing means 11 and is wound around a turning pulley 5 at the top of the counterweight 2. The rope 3 rises via the turning pulley 5 of the counterweight 2 and is wound around the rotating body 7 of the hoisting machine 6. The rope 3 wound around the rotating body 7 of the hoisting machine 6 descends again and is wound around a pair of car support turning pulleys 4 at the lower part of the car 1. The rope 3 wound around the car support turning pulley 4 rises again and is fixed to a building frame or an elevator structure (such as a guide rail 8a) by fixing means (not shown).

Next, the hoisting machine 6 according to the first embodiment will be described with reference to FIGS. 2 and 4. The rotating body 7 is supported by the bearing 16 and rotates about the support shaft 22 of the base structure 12. The rotating body 7 has a peripheral wall 7 b concentric with the support shaft 22. A plurality of permanent magnets 7a are fixed to the inner periphery of the peripheral wall 7b. A fixed iron core 18a is fixed to the base structure 12 with a bolt or the like (not shown) so as to face the permanent magnet 7a through a predetermined gap with the permanent magnet 7a. A fixed winding 18b is wound around the fixed iron core 18a.
The support shaft 22 forms a space 22 a on the side facing the rotating body 7. The detector 13 is accommodated in the space 22a. The detector 13 is fixed to the fixing member 15 with a screw or the like (not shown), and the fixing member 15 is fixed to the tip of the support shaft 22 facing the rotating body 7 with a screw or the like (not shown). Detection signals detected by the detector 13 for motor magnetic pole alignment, speed control, and car alignment are output to a control device (not shown) via an output line 19.

Here, the detector 13 in this embodiment has a convex shaft portion 13 a of a convex detector protruding from the detector 13. The convex shaft portion 13 a of the detector is connected to the rotating body 7 via the attachment 14. The rotating body 7 has a recess 7 d for fixing the attachment 14 on the surface facing the detector 13. A stepped portion 7c into which the flange 14a of the attachment 14 is fitted is formed slightly larger than the flange 14a around the opening on the support shaft 22 side of the recess 7d. On the surface of the stepped portion 7c facing the support shaft 22, four sets of mounting holes formed with female threads are formed concentrically with the through hole 14e of the attachment 14 (not shown).
As shown in FIG. 4, the attachment 14 has a flange 14a and a base 14b. As shown in FIG. 4B, the flange 14a has four sets of countersunk 14d and four sets of through holes 14e concentric with the countersunk 14d on the surface facing the detector 13. Moreover, the attachment 14 has the concave connection part 14c for connecting with the detector 13 in the side facing the detector 13 of the flange 14a. The shape of the concave connection portion 14c is the same as the cross-sectional shape of the convex shaft portion 13a of the detector, and is formed to be slightly large enough to fit the convex shaft portion 13a of the detector into the concave connection portion 14c.
The attachment 14 has a base 14b fitted into the recess 7d, and the flange 14a is fixed by four sets of flat head screws 17. Further, the convex shaft portion 13 a of the detector is fitted into the concave connection portion 14 c of the attachment 14.

According to the first embodiment, even when the shape of the convex shaft portion 13a of the detector is different from that of the existing one, the shape of the concave connection portion 14c of the attachment 14 is changed to that of the convex shaft portion 13a of the new detector. If it matches the shape, it can be replaced with a new detector by replacing only the attachment 14 without replacing the set of rotating bodies 7.

As another example of the tension member winding device, a case where the detector has a shaft portion having a shape different from that of the first embodiment will be described.
A second embodiment of the present invention will be described with reference to FIGS. Since the configuration of the traction type elevator and the configuration of the hoisting machine 6 are the same as those in the first embodiment, the same reference numerals are given and description thereof is omitted.
FIG. 3 is a sectional view of the hoist according to the second embodiment. FIGS. 5A to 5D are detailed views of attachments according to the second and fourth embodiments. 5A is a rear view of the attachment according to the second and fourth embodiments, FIG. 5B is a front view, FIG. 5C is a left side view, and FIG. 5D is a cross-sectional view taken along line BB in FIG. is there.

The detector 21 in Example 2 has a concave shaft portion 21a of a concave detector. The concave shaft portion 21 a of the detector is connected to the rotating body 7 via the attachment 20. The rotating body 7 has a concave portion 7 d for fixing the attachment 14 on the surface facing the detector 21. A stepped portion 7c into which the flange 20a of the attachment 20 is fitted is formed slightly larger than the flange 20a around the opening on the support shaft 22 side of the recess 7d. Four sets of holes in which female threads are formed are formed concentrically with the through hole 20e of the attachment 20 on the surface of the stepped portion 7c facing the support shaft 22 (not shown).

As shown in FIG. 5, the attachment 20 has a flange 20a and a base 20b. As shown in FIG. 5B, the flange 20a has four sets of countersunk 20d and four sets of through holes 20e concentric with the countersunk 20d on the surface facing the detector 21. Moreover, the attachment 20 has the convex connection part 20c for connecting with the detector 21 in the side facing the detector 21 of the flange 20a. The shape of the convex connection portion 20c is the same as the shape of the concave shaft portion 21a of the detector, and is formed to be slightly small enough to allow the convex connection portion 20c to be fitted into the concave shaft portion 21a of the detector.
The attachment 20 has a base 20b fitted in the recess 7d, and the flange 20a is fixed by four sets of flat head screws 17. Further, the convex connection portion 20c of the attachment 20 is fitted into the concave shaft portion 21a of the detector.

According to the second embodiment, even when the shape of the concave shaft portion 21a of the detector is different from the existing one, the shape of the convex connection portion 20c of the attachment 20 is changed to the shape of the concave shaft portion 21a of the new detector. Can be replaced with a new detector by replacing only the attachment 20 without replacing the set of rotating bodies 7.

As another example of the tension member winding device, a speed control device will be described.
A third embodiment of the present invention will be described with reference to FIGS. Since the configuration of the detector and the attachment is the same as that of the first embodiment, the same reference numerals are given and the description thereof is omitted as appropriate.
FIG. 7 is a front view of the speed governor according to the third and fourth embodiments. FIG. 8 is a left side view of the speed governor according to the third and fourth embodiments. 9 is a schematic cross-sectional view of a C portion in FIG. 8 of the speed governor according to the third embodiment.

First, the configuration of the speed governor 23 will be described with reference to FIGS. 7 and 8. The speed governor 23 includes a machine base 24 and a rotating body 30. The machine base 24 has a pedestal portion 24b that supports the load of the speed governor and a vertical column portion 24a that supports the rotating body 30 by a bearing or the like (not shown) via the shaft portion 25 of the rotating body. A known fly weight mechanism 31 is attached to the surface of the rotating body 30 opposite to the vertical column portion 24a, and the fly weight mechanism 31 is always urged by the spring 32 in the direction of the shaft portion 25 of the rotating body. Yes. A movable shoe 36 is rotatably attached to the pedestal portion 24b with the fulcrum 29 of the movable shoe as a fulcrum. A plate-like support member 39 that is long in the vertical direction is fixed to the pedestal 24b on the rotating body 30 side. The support member 39 has a cam shaft 40 at the end opposite to the pedestal portion 24b on the surface opposite to the vertical column portion 24a of the rotating body 30, and the cam 34 is rotatably attached to the cam shaft 40. Yes. The movable shoe 36 has a holding mechanism 38 that is pivotally supported by a shaft (not shown) on the surface opposite to the vertical column portion 24a on the gripping portion 37 side opposite to the fulcrum 29 of the movable shoe. A pin 35 is attached to a substantially distal end portion of the holding mechanism 38 opposite to the movable shoe 36 so as to be perpendicular to the surface opposite to the vertical column portion 24a. The cam 34 has a U-shaped notch 41 that is slightly wider than the diameter of the pin 35 that opens on the opposite side of the gripping portion 37. The movable shoe 36 is rotated counterclockwise about the fulcrum 29 of the movable shoe, the pin 35 is engaged with the notch 41 of the cam 34, and the movable shoe 36 is held at a predetermined interval from the grip portion 37. . A stop switch 27 for stopping power supply to the elevator motor when the elevator car descends at an abnormal speed is attached via a bracket 26 to the tip of the vertical column portion 24a opposite to the base portion 24b. Further, a speed adjusting rope 33, which is an example of a tension member, is wound around the rotating body 30.

Next, the operation of the speed governor 23 will be described with reference to FIGS. When the elevator car descends, the rotating body 30 rotates counterclockwise with respect to the paper surface around the shaft portion 25 of the rotating body. As the rotating body 30 rotates, the flyweight mechanism 31 resists the spring 32 and gradually spreads away from the shaft portion 25 of the rotating body 30 by centrifugal force, that is, toward the outer edge of the rotating body 30. When the descending speed of the elevator car reaches the first safe speed, the stop switch 27 is kicked by the spread weight mechanism 31, and the fact that the first safe speed is reached is output to a control device (not shown). The control device receives the output and stops power supply to the motor. Further, when the descending speed increases and reaches the second safe speed that is higher than the first safe speed, the cam 34 is kicked by the spread flyweight mechanism 31, and the cam 34 is moved with respect to the paper surface about the cam shaft 40. Rotate clockwise. By rotating the cam 34 clockwise, the pin 35 is removed from the notch 41, and the movable shoe 36 falls by its own weight in the direction of the pedestal 24b, that is, counterclockwise around the fulcrum 29 of the movable shoe. As a result, the speed control rope 33 is sandwiched between the movable shoe 36 and the gripping portion 37, and the speed control rope 33 is pulled up relatively with respect to the elevator car, and mechanically connected to the elevator by an emergency stop device (not shown). Stop the car.

Next, attachment of the detector 13 will be described with reference to FIGS. 8 and 9. The fixing member 28 is substantially Z-shaped, and one side thereof is fixed to the vertical column portion 24a with a screw or the like (not shown). On the other side of the fixing member 28, the detector 13 is fixed to the surface opposite to the vertical column portion 24a with a screw or the like (not shown). The fixing member 28 is fixed at a position where the axis of the detector 13 and the axis of the rotating body 30 substantially coincide.

The connection between the detector 13 and the shaft portion 25 of the rotating body via the attachment 14 in the third embodiment is the same as the connection via the attachment 14 between the detector 13 and the rotating body 7 in the first embodiment. Is omitted.
According to the third embodiment, even if the shape of the convex shaft portion 13a of the detector is different from that of the existing one, the shape of the concave connection portion 14c of the attachment 14 is changed to that of the convex shaft portion 13a of the new detector. If it matches the shape, it can be replaced with a new detector by replacing only the attachment 14 without replacing the set of rotating bodies 30.

As another example in the case where the tension member winding device is a speed governor, a case where the detector has a shaft portion having a shape different from that of the third embodiment will be described.
A fourth embodiment of the present invention will be described with reference to FIGS. Since the configuration of the detector and the attachment is the same as that of the second embodiment, the same reference numerals are given and the description thereof is omitted as appropriate.
FIG. 8 is a left side view of the speed governor according to the third and fourth embodiments. 10 is a schematic cross-sectional view of a C portion in FIG. 8 of the speed governor according to the fourth embodiment.
Since the configuration of the speed governor 23 and the operation of the speed governor 23 are the same as those in the third embodiment, the description thereof is omitted.

Next, attachment of the detector 20 will be described with reference to FIGS. 8 and 10. The fixing member 28 is substantially Z-shaped, and one side thereof is fixed to the vertical column portion 24a with a screw or the like (not shown). On the other side of the fixing member 28, the detector 21 is fixed to a surface opposite to the vertical column portion 24a with a screw or the like (not shown). The fixing member 28 is fixed at a position where the axis of the detector 21 and the axis of the rotating body 30 substantially coincide.
The connection through the attachment 20 between the detector 21 and the shaft portion 25 of the rotating body in the fourth embodiment is the same as the connection through the attachment 20 between the detector 21 and the rotating body 7 in the second embodiment. Is omitted.

According to the fourth embodiment, even when the shape of the concave shaft portion 21a of the detector is different from that of the existing one, the shape of the convex connection portion 20c of the attachment 20 is changed to the shape of the concave shaft portion 21a of the new detector. Can be replaced with a new detector by replacing only the attachment 20 without replacing the set of rotating bodies 30.
In addition, as in each embodiment, when a detector having a convex shaft portion is replaced with a detector having a convex shaft portion, or when a detector having a concave shaft portion is replaced with a detector having a concave shaft portion. Not only when a detector with a convex shaft is replaced with a detector with a concave shaft, or when a detector with a concave shaft is replaced with a detector with a convex shaft. The same effect can be obtained also when exchanging.

Further, in Example 1 and Example 3, the attachment 14 is fixed to the rotating body 7 or the shaft portion 25 of the rotating body using the flange 14a, but the flange 14a and the stepped portion 7c are eliminated, and the base 14b is attached. A male screw may be engraved and a female screw may be engraved and fixed in the recess 7d or the recess 25d.

Further, in Example 2 and Example 4, the attachment 20 is fixed to the rotating body 7 or the shaft portion 25 of the rotating body using the flange 20a, but the flange 20a and the stepped portion 7c are eliminated, and the base 20b is attached. A male screw may be engraved and a female screw may be engraved and fixed in the recess 7d or the recess 25d.

Moreover, in Example 1 and Example 3, although the convex-shaped shaft part 13a and the convex-shaped connection part 20c described the convex part cross section with the circle, the cross-sectional shape may be a polygon and the key is circular. It may be a solid shape, and may be a cross-sectional shape having one or more chamfers in a circle.

Moreover, in Example 2 and Example 4, although the concave shaft part 21a and the concave connection part 14c described the concave cross section as a circle, the cross sectional shape may be a polygon, and the key groove is provided in a circle. It may be a shape, and may be a cross-sectional shape having one or more chamfers in a circle.

The tension member may be a belt other than a rope.

Moreover, although Example 1 and Example 2 demonstrated the winding machine which has a permanent magnet type motor as a tension member winding apparatus, it is a winding machine which has other types of electric motors, such as an induction motor, as a tension member winding apparatus. Needless to say, the same effect can be obtained.

Moreover, although Example 3 and Example 4 demonstrated the speed control apparatus which has a flying weight mechanism as a tension member winding apparatus, even if it is a speed control apparatus which has a flying ball mechanism as a tension member winding apparatus, it is the same. Needless to say, an effect can be obtained.

The present invention can be implemented in a mode in which various improvements, modifications, or variations are added based on the knowledge of those skilled in the art without departing from the spirit of the present invention. Moreover, you may implement with the form which substituted any invention specific matter to the other technique within the range which the same effect | action or effect produces.

DESCRIPTION OF SYMBOLS 1 Car 2 Counterweight 3 Rope 4 Car support turning pulley 5 Turning pulley 6 Hoisting machine 7, 30 Rotating body 7a Permanent magnet 7b Peripheral wall 7c Stepped part 7d, 25d Recessed part 8a, 8b Guide rail 9a, 9b Counterweight guide rail 10 Machine base 11 Fixing means 12 Base structure 13, 21 Detector 13a Convex shaft part 14, 20 Attachment 14a, 20a Flange 14b, 20b Base part 14c Concave connection part 14d, 20d Countersunk hole 14e, 20e Through hole 15, 28 Fixing member 16 Bearing 17 Countersunk screw 18a Fixed iron core 18b Fixed winding 19 Output line 20c Convex connection part 21a Concave shaft part 22 Support shaft 22a Space 23 Speed governor 24 Machine base 24a Vertical column part 24b Base part 25 Shaft part 26 of rotating body Bracket 27 Stop switch 29 Movable shoe fulcrum 31 Fly Weight mechanism 32 Spring 33 Speed control rope 34 Cam 35 Pin 36 Movable shoe 37 Grip portion 38 Holding mechanism 39 Support member 40 Cam shaft 41 Notch

Claims (9)

In an elevator having a car that goes up and down in the hoistway,
The elevator has a tension member winding device,
The tension member winding device has at least a rotating body and a detector,
The detector is fixed via a base member of the tension member winding device or a fixing member attached to the base structure,
The rotating body has an attachment on the side facing the detector,
The said attachment is connected with the said detector, The elevator apparatus characterized by the above-mentioned. The rotating body has a recess on the side facing the detector,
The elevator apparatus according to claim 1, wherein the attachment is attached to the recess. The elevator apparatus according to claim 1 or 2, wherein the attachment is detachably attached to the rotating body. The elevator apparatus according to any one of claims 1 to 3, wherein the attachment includes a concave connection portion coaxial with the rotating body. The elevator apparatus according to any one of claims 1 to 3, wherein the attachment includes a convex connection portion coaxial with the rotating body. 6. The elevator apparatus according to claim 1, wherein the tension member winding device is a hoisting machine. The elevator apparatus according to claim 6, wherein the hoisting machine has a permanent magnet type electric motor. The elevator device according to any one of claims 1 to 5, wherein the tension member winding device is a speed control device. The elevator apparatus according to claim 8, wherein the speed control device includes a shaft portion on the rotating body.

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