JP3396535B2 - Linear motor driven elevator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linear motor drive elevator apparatus.

[0002]

2. Description of the Related Art In recent years, a linear motor drive elevator system has been proposed, which moves a car up and down in a hoistway by a linear motor drive, instead of a traction type elevator that lifts a car up and down by a winding drive using a conventional hanging rope. Has been done.

The structure of this linear motor drive elevator apparatus is as shown in FIGS. 5 and 6, in which a linear motor 2 having a primary coil is attached to a counterweight 1 and a hanging rope 3 is attached to the counterweight 1. The car basket 4 is connected via this, and the suspension rope 3 is wound around the sheave 5 so that both can be moved up and down in a fishing bottle manner. On the other hand, a secondary conductor 7 is laid in the hoistway 6 so as to penetrate the linear motor 2 on the side of the counterweight 1 with a predetermined gap. Then, by energizing the linear motor 2 through the current collector 8 provided on the side of the counterweight 1, the counterweight 1 is transferred to the counterweight 1 by utilizing the attraction and repulsive force acting between the primary coil and the secondary conductor 7. Thrust is applied to raise and lower the hoistway 6, and the car 4 is raised and lowered so as to follow this movement.

In such a conventional linear motor drive elevator apparatus, the secondary conductor 7 is generally formed by connecting a plurality of cylindrical metals having screw portions at the upper and lower ends,
The upper end was fixed to the building structure 9 on the hoistway 6, and the lower end was connected to the lower fixed beam 11 of the hoistway 6 by a tension spring 10 so as to apply tension to the secondary conductor 7.

[0005]

However, such a conventional linear motor drive elevator apparatus has the following problems.

[0006] First, the work of laying the secondary conductor, which is made by simply connecting the cylindrical metal having no grip, is a particularly difficult work even in the work of installing the linear motor drive elevator apparatus. The same can be said for maintenance work. Secondly, in the linear motor drive elevator apparatus, it is important that the spacing between the coil on the inner surface of the linear motor and the outer surface of the secondary conductor is uniform over the entire circumference of the secondary conductor. This is because the distance between the coil and the outer surface of the secondary conductor is uniform over the entire circumference of the secondary conductor, so that the attraction forces of the linear motor and the secondary conductor are balanced. Therefore, if the distance between the coil and the secondary conductor is not uniform over the entire circumference, there will be a difference in the attractive force, which will result in deformation of the secondary conductor and, in addition, between the secondary conductor and the coil. May come into contact and damage the coil, resulting in a ground fault.

However, in the structure of the conventional linear motor drive elevator apparatus, as shown in FIG.
Is constantly tensioned by the spring 10,
Back and forth, left and right, that is, horizontal movement is restricted,
It cannot move horizontally. Further, usually, a guide rail for guiding the lifting operation of the counterweight 1 is also fixed in the hoistway, and the counterweight 1 which moves up and down along the guide rail cannot move independently in the horizontal direction.

However, it is unavoidable that the secondary conductor and the guide rail have a bend due to manufacturing and a bend due to a centering error during installation work.

Therefore, in the conventional structure in which the left and right movements of the secondary conductor and the guide rail are not allowed, the coil of the linear motor 2 and the outer periphery of the secondary conductor are not uniform during the ascending / descending stroke. There is a difference in attraction force, which results in deformation of the secondary conductor, and further, the secondary conductor and the coil are in contact with each other, and the coil is damaged, which may cause a ground fault accident.

The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a linear motor drive elevator apparatus which can easily perform the work of attaching the secondary conductor to the hoistway. .

The present invention also allows a small amount of horizontal movement of the lower end of the secondary conductor to prevent the coil of the linear motor and the secondary conductor from contacting each other during the lifting operation of the counterweight or the car. It is an object of the present invention to provide a linear motor drive elevator device that is stable and has stable quality and safety.

[0012]

In order to achieve the above object, the present invention provides, in claim 1, a car and a balance connected in a fishing bottle type via a sheave and a hanging rope wound around the sheave. A weight, a primary conductor of a cylindrical linear motor provided on either one of the car or the counterweight, and is arranged over substantially the entire length of the elevator hoistway while penetrating through the primary conductor, A linear motor including a columnar secondary conductor whose upper end is fixed to a structure above the hoistway, and a support device which supports a lower end of the secondary conductor to a lower fixing member of the hoistway. In the drive elevator apparatus, the support device includes a bolt erected on a lower end fixing member of the hoistway, a nut screwed to the bolt, an elastic body supported by the nut, and At the bottom of the next conductor And a combined support member, and inserting the bolt into the hole of the support member, those formed by charge lower surface resiliently in the support member by the elastic body.

According to a second aspect of the present invention, a car and a balance weight connected in a fishing bottle manner via a sheave and a hanging rope wound around the sheave, and one of the car and the balance weight are provided. A cylindrical linear motor primary conductor, and a columnar secondary that is arranged over almost the entire length of the elevator hoistway while penetrating through the primary conductor, and its upper end is fixed to a structure above the hoistway. A linear motor including a conductor and a support device that allows the lower end portion of the secondary conductor to slightly move in the horizontal direction with respect to the lower fixing member of the hoistway and adjusts the restraining force to support the conductor. A drive elevator device, wherein the support device includes a bolt erected on a lower end fixing member of the hoistway, a nut screwed to the bolt, an elastic body supported by the nut, and At the top of the body A roller attached to the secondary conductor, and a supporting member coupled to the lower end of the secondary conductor. The bolt is inserted into the hole of the supporting member, and the lower surface of the supporting member is elastically received by the roller and the elastic body. It consists of

According to a third aspect of the present invention, a car and a balance weight connected in a fishing bottle type via a sheave and a suspension rope wound around the sheave, and one of the car and the balance weight are provided. A cylindrical linear motor primary conductor, and a columnar secondary that is arranged over almost the entire length of the elevator hoistway while penetrating through the primary conductor, and its upper end is fixed to a structure above the hoistway. A linear motor including a conductor and a support device that allows the lower end portion of the secondary conductor to slightly move in the horizontal direction with respect to the lower fixing member of the hoistway and adjusts the restraining force to support the conductor. A drive elevator apparatus, wherein the support device laterally contacts the secondary conductor from both sides, a lever that supports the roller with respect to a lower end fixing member of the hoistway, and the roller is the secondary An elastic member for biasing the lever so as to press the body, and supporting the elastic body, and those comprising an adjustment means for adjusting the biasing force.

[0015]

[0016]

[0017]

According to the first aspect of the present invention, the lower end of the secondary conductor is supported by the lower end fixing member of the hoistway through the supporting device, so that the mounting and removing work of the secondary conductor can be easily performed by the supporting device. At this time, a nut is screwed into a position at which the bolt is erected on the lower end fixing member of the hoistway at an appropriate height, and an elastic body is supported by this nut, and the nut is coupled to the lower end of the secondary conductor. The supporting structure is placed, and the tip end of the bolt is inserted into the hole of the supporting member so that the lower surface of the supporting member is elastically received by the elastic body. The elastic supporting force of the secondary conductor is adjusted by adjusting the screwing position of the nut.

According to a second aspect of the present invention, the lower end of the secondary conductor is supported by the lower end fixing member of the hoistway via a support device which allows a slight horizontal movement and can adjust its restraining force. This allows the lower part of the secondary conductor to move slightly in the horizontal direction, and prevents the coil of the linear motor and the secondary conductor from coming into contact with each other during the lifting operation of the counterweight or the car. At this time, a nut is screwed at a position of an appropriate height of a bolt erected on the lower end fixing member of the hoistway, the elastic body is supported by the nut, and the nut is mounted on the roller attached to the upper end of the elastic body. A support member connected to the lower end of the secondary conductor is placed, and the tip end of the bolt is inserted into the hole of the support member so that the roller and the elastic body elastically receive the lower surface of the support member. The elastic supporting force of the secondary conductor is adjusted by adjusting the screwing position of the nut. The rollers also allow a small amount of horizontal movement of the lower part of the secondary conductor to prevent the coils of the linear motor from coming into contact with the secondary conductor during the lifting operation of the counterweight or the car.

According to a third aspect of the present invention, rollers are contacted with the secondary conductor from both sides in the lateral direction, the rollers are supported by a lever with respect to a lower end fixing member of the hoistway, and the roller is elastically contacted with the secondary conductor. By urging the lever with, and adjusting the urging force of this elastic body by the adjusting means, the lower part of the secondary conductor can be slightly moved in the horizontal direction, and its restraining force is adjusted to adjust the balance weight or It prevents the coil of the linear motor and the secondary conductor from coming into contact with each other during the lifting operation of the car.

In the linear motor drive elevator apparatus according to the invention of claim 4, a nut is screwed to a position of an appropriate height of a bolt erected on the lower end fixing member of the hoistway, and the elastic body is received by the nut. Then, the supporting member connected to the lower end of the secondary conductor is placed on the roller attached to the upper end of the elastic body, and the tip end of the bolt is inserted into the hole of the supporting member to form the lower surface of the supporting member by the roller and the elastic body. Is a support structure that elastically receives. The elastic supporting force of the secondary conductor is adjusted by adjusting the screwing position of the nut. The rollers also allow a small amount of horizontal movement of the lower part of the secondary conductor to prevent the coils of the linear motor from coming into contact with the secondary conductor during the lifting operation of the counterweight or the car.

In the linear motor drive elevator apparatus of the fifth aspect of the present invention, the roller is brought into contact with the secondary conductor from both sides in the lateral direction, and the roller is supported by the lever with respect to the lower end fixing member of the hoistway. By biasing the lever with an elastic body so that it is pressed against the conductor and adjusting the biasing force of this elastic body by the adjusting means, it is possible to move the lower part of the secondary conductor in the horizontal direction and its restraining force. Adjust
Prevents contact between the coil of the linear motor and the secondary conductor during the lifting operation of the counterweight or the car.

[0022]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 shows an embodiment of the present invention. As in the conventional example shown in FIG. 5, a linear motor 2 having a primary coil is attached to a counterweight 1 and a hanging rope 3 is attached to the counterweight 1. The car basket 4 is connected via this, and the suspension rope 3 is wound around the sheave 5 so that both can be moved up and down in a fishing bottle manner. On the other hand, the secondary conductor 7 is laid in the hoistway 6 so as to penetrate the linear motor 2 on the side of the counterweight 1 with a predetermined gap. Then, by energizing the linear motor 2 through the current collector 8 provided on the side of the counterweight 1, the counterweight 1 is transferred to the counterweight 1 by utilizing the attraction and repulsive force acting between the primary coil and the secondary conductor 7. Thrust is applied to raise and lower the hoistway 6, and the car 4 is raised and lowered so as to follow this movement.

The support structure of the secondary conductor 7 will be described in detail. As shown in detail in FIG. 3B, the upper fixing plate 21 is screwed into the screw connection portion 20 at the upper end, and the upper fixing plate 21 is constructed. By fixing the object 9 with bolts 22 and nuts 23, the upper end of the object 9 is fixed.

The supporting structure below the secondary conductor 7 is shown in FIG.
As shown in detail in FIG. 2, a supporting bolt 2 attached to a lower fixed beam 24 fixed to the lower end of the hoistway 6.
5. A spring supporting nut 26 is screwed into an appropriate intermediate position of 5, a spiral spring 27 is fitted on the bolt 25 above the nut 26, and the tip end of the bolt 25 is integrated with the lower end of the secondary conductor 7. The large-diameter hole 29 of the attached support metal fitting 28 is penetrated, and the helical spring 31 for pressing is also fitted to the tip portion 30 of the bolt 25 protruding above the support metal fitting 28, and the pressing nut 32 is attached on the upper side. It has been screwed in. And the aforementioned spiral spring 2
7. Horizontally swingable rollers 33 and 34 are attached to the front end portions of the pressing spiral springs 31, respectively, and the rollers 33 and 34 are pressed against the support fitting 28 from above and below.

Next, the procedure for attaching the secondary conductor in the linear motor drive elevator apparatus having the above-described structure will be described. (1) First, as shown in FIG.
The support bolt 25, the spring support nut 26, and the spiral spring 27 are assembled to the above. (2) Suspend with the support fitting 28 attached to the lowermost secondary conductor 7, and insert the tip portion 30 of the support bolt 25 assembled in (1). (3) As shown in FIG. 3B, the secondary conductor 7 in the second stage from the bottom is connected to the lowermost secondary conductor 7 attached in (2).
Hereinafter, the secondary conductor 7 is sequentially connected to the upper side. Then, in order to prevent the secondary conductor 7 from collapsing at some points along the way, the support metal fittings 35 are fixed to the guide rails (not shown) on both sides, and the secondary conductor 7 is supported at the intermediate portion thereof. (4) When reaching the upper end of the hoistway 6, the uppermost secondary conductor 7
The upper fixing plate 21 is attached to the upper end of the
The spring supporting nut 26 screwed to the lower supporting bolt 25 and turned in the direction of pushing up the secondary conductor 7 as a whole, and the upper fixing plate 21 is moved upward. The upper surface of the secondary conductor 7 is fixed to the building structure 9 by tightening the upper support bolts 22 and the nuts 23 in a state where the upper surface of the secondary conductor 7 is almost in contact with the lower surface. (5) Remove the support fitting 35. (6) Finally, as shown in FIG. 3C, the pressing roller 3
4 is attached to the presser coil spring 31 and the press nut 32 to the tip portion 30 of the bolt 25 to attach the support fitting 28.
The coil springs 27 and 31 are elastically sandwiched and supported from above and below.

The secondary conductor 7 once attached to the hoistway 6 can be removed by a procedure just opposite to the procedure (1) to (6).

Thus, in the linear motor drive elevator apparatus of this embodiment, the uppermost secondary conductor 7 is attached to the hoistway 6 by attaching the secondary conductor 7 to the hoistway 6 according to the procedures (1) to (6). It is fixed to the object 9 and the lower secondary conductor 7 is supported by the rollers 33 and 34 in such a manner that it is elastically sandwiched from above and below by the elastic force of the spiral springs 27 and 31. The roller 7 can be moved slightly horizontally by rolling of the rollers 33 and 34, and it is possible to prevent the coil of the linear motor 2 from coming into contact with the secondary conductor 7 during the lifting operation of the counterweight 1. You can do it.

In order to adjust the restraining force of the secondary conductor 7 in the horizontal direction, the clamping force of the rollers 33 and 34 is set to the nuts 26 and 32.
It can be performed by adjusting according to the degree of tightening.

The holding spiral spring 31 fitted in the tip portion 30 side of the supporting bolt 25 used in the above embodiment is advantageous for elastically supporting the support fitting 28 from the upper side. However, it is also possible to omit this and to have a structure in which the holding nut 32 is simply screwed in to hold the support fitting 28 from above.

Next, another embodiment of the present invention will be described with reference to FIG. FIG. 4 shows the supporting structure at the bottom of the secondary conductor 7, and the supporting structure at the upper part of the secondary conductor 7 is the same as that shown in FIGS. 1 and 3 (b).

That is, the fixed beam 2 at the bottom of the hoistway 6
4, a lever 42 with a roller 41 is vertically erected so as to sandwich the lower end of the lowermost secondary conductor 7 from both sides, and is provided on the fixed beam 24 at a position outside the lever 42. The spring support nut 45 is screwed into the spring support bolt 44 inserted through the spring support body 43, and the other end of the presser spring 46 whose one end is fitted to the end portion inside the spring support nut 45 is attached to the lever 42. It is a connected configuration.

In the linear motor drive elevator apparatus of this embodiment, the lower portion of the secondary conductor 7 can move in the horizontal direction against the elastic force of the presser spring 46, whereby the counterweight 1 is moved. It is possible to prevent the coil of the linear motor 2 and the secondary conductor 7 from coming into contact with each other during the lifting operation.

In order to adjust the restraining force of the secondary conductor 7 in the horizontal direction, the spring pressing nut 45 is rotated and its position is slightly moved to the lever 42 side or the opposite side thereof, so that the expanding force of the pressing spring 46 is increased. By strengthening and weakening.

In the embodiment shown in FIGS. 1 and 2, the spiral spring 27, which does not include the rollers 33, 34, is used.
It is also possible to have a structure in which the support fitting 28 is supported only by 31.

For the purpose of simplifying the mounting procedure of the secondary conductor 7, instead of forming the large-diameter hole 29 in the support fitting 28 that allows the support fitting 28 to move slightly horizontally, the support bolt 25 is used. It is possible to form a hole in which the threaded portion is just inserted and to insert the support bolt 25 there.

Furthermore, in all of the above-described embodiments, the shape of the spring as the elastic body is not limited to the spiral spring, and springs of other shapes or elastic bodies of other types may be used. it can.

[0037]

As described above, according to the present invention, since the lower end of the secondary conductor is supported by the lower end fixing member of the hoistway through the supporting device, the work for attaching and detaching the secondary conductor is performed. Can be easily performed by the supporting device. that time,
A nut is screwed at a suitable height of a bolt that is erected on the lower end fixing member of the hoistway, and an elastic body is supported by the nut, and a supporting member is connected to the lower end of the secondary conductor. , And the elastic member elastically receives the lower surface of the support member by inserting the tip of the bolt into the hole of the support member,
Since the elastic supporting force of the secondary conductor is adjusted by adjusting the screwing position of the nut, the vertical position of the secondary conductor can be adjusted by adjusting the screwing position of the nut. At the time of mounting and dismounting, the work can be easily performed by the supporting device. Also, the lower end of the hoistway allows the lower end of the secondary conductor to move slightly in the horizontal direction,
In addition, since it is supported via a supporting device capable of adjusting its restraining force, it is possible to slightly move the lower part of the secondary conductor in the horizontal direction, and it is possible to move the counterweight or the elevator car while moving up and down. It is possible to prevent the coil of the linear motor and the secondary conductor from coming into contact with each other. At that time, a nut is screwed to a position of an appropriate height of a bolt that is erected on the lower end fixing member of the hoistway, an elastic body is supported by the nut, and the nut is mounted on the roller attached to the upper end of the elastic body. A support member connected to the lower end of the secondary conductor is placed, and by inserting the tip of the bolt into the hole of the support member, the lower surface of the support member is elastically received by the roller and the elastic body, and the elasticity of the secondary conductor is reduced. The support force is adjusted by adjusting the screwing position of the nut, and the roller allows the lower part of the secondary conductor to move slightly in the horizontal direction, so the work is easy when mounting and removing the secondary conductor. This can be done, and it is possible to prevent the coil of the linear motor and the secondary conductor from coming into contact with each other during the lifting operation of the counterweight or the car. Further, rollers are contacted with the secondary conductor from both sides in the lateral direction, the rollers are supported by the lever with respect to the lower end fixing member of the hoistway, and the lever is urged by the elastic body so that the rollers are pressed against the secondary conductor. Since the biasing force of this elastic body is adjusted by the adjusting means, the lower part of the secondary conductor can be slightly moved in the horizontal direction and its restraining force can be adjusted. It is possible to prevent the coil of the linear motor and the secondary conductor from coming into contact with each other during the raising / lowering operation of the car.

[0038]

[0039]

[0040]

[0041]

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is an enlarged front view of a portion II in FIG.

FIG. 3 is an explanatory view of a procedure for attaching the secondary conductor of the above-described embodiment.

FIG. 4 is an enlarged front view of a supporting device portion according to another embodiment of the present invention.

FIG. 5 is a front view of a conventional example.

FIG. 6 is an enlarged side view showing a counterweight and a linear motor portion of a general linear motor drive elevator apparatus.

[Explanation of symbols]

1 counterweight 2 linear motor 3 hanging rope 4 car 6 hoistway 7 Secondary conductor 8 current collectors 9 building structures 20 Connection screw part 21 Fixed plate 22 volts 23 nuts 24 fixed beam 25 Support bolt 26 Nuts for spring support 27 spiral spring 28 Support bracket 29 Large diameter hole 30 Tip 31 Presser nut 32 Vortex spring for presser foot 33 Laura 34 Laura 35 Support bracket 41 Laura 42 lever 43 Spring support member 44 Spring support bolt 45 Spring support nut 46 Presser spring

Claims (3)

(57) [Claims] 1. A car and a counterweight connected in a fishing bottle manner via a sheave and a suspension rope wound around the sheave, and a tubular shape provided on either the car or the counterweight. A primary conductor of a linear motor, and a columnar secondary conductor that is disposed over substantially the entire length of the elevator hoistway in a state of penetrating the inside of the primary conductor, and its upper end is fixed to a structure above the hoistway, A linear motor drive elevator apparatus comprising: a supporting device that supports a lower end portion of the secondary conductor with respect to a lower fixing member of the hoistway, wherein the supporting device stands on a lower end fixing member of the hoistway. A bolt provided, a nut screwed to the bolt, an elastic body supported by the nut, and a support member coupled to the lower end of the secondary conductor, the bolt being provided in the hole of the support member. Inserted through Linear motor drive elevator apparatus characterized by comprising by responsible for the lower surface of the supporting member elastically by the elastic member. 2. A car and a counterweight connected in a fishing bottle manner via a sheave and a suspension rope wound around the sheave, and a tubular shape provided on either the car or the counterweight. A primary conductor of a linear motor, and a columnar secondary conductor that is disposed over substantially the entire length of the elevator hoistway in a state of penetrating the inside of the primary conductor, and its upper end is fixed to a structure above the hoistway, A linear motor drive elevator apparatus comprising: a support device that allows the lower end portion of the secondary conductor to move slightly in the horizontal direction with respect to the lower fixing member of the hoistway, and adjusts and supports the restraining force thereof. The supporting device comprises a bolt that is erected on a lower end fixing member of the hoistway, a nut screwed to the bolt, an elastic body supported by the nut, and an upper end of the elastic body. Installed on And a supporting member coupled to the lower end of the secondary conductor, the bolt is inserted into the hole of the supporting member, and the lower surface of the supporting member is elastically received by the roller and the elastic body. A linear motor drive elevator device characterized by the above. 3. A car and a counterweight connected in a fishing bottle type via a sheave and a suspension rope wound around the sheave, and a tubular shape provided on either the car or the counterweight. A primary conductor of a linear motor, and a columnar secondary conductor that is disposed over substantially the entire length of the elevator hoistway in a state of penetrating the inside of the primary conductor, and its upper end is fixed to a structure above the hoistway, A linear motor drive elevator apparatus comprising: a support device that allows the lower end portion of the secondary conductor to move slightly in the horizontal direction with respect to the lower fixing member of the hoistway, and adjusts and supports the restraining force thereof. The supporting device includes a roller that comes into contact with the secondary conductor from both sides in a lateral direction, a lever that supports the roller with respect to a lower end fixing member of the hoistway, and the roller is in pressure contact with the secondary conductor. An elastic member for biasing the lever so that, by supporting the elastic member, and a linear motor driven elevator apparatus comprising an adjusting means for adjusting the biasing force.