JP2603889B2 - Guide rails for linear motor driven elevators - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide rail for an elevator having a linear motor drive system.

[0002]

2. Description of the Related Art In recent years, elevators having a linear motor drive system have been developed. FIG. 3 and FIG.
No. 1381 is a sectional view and a side view of a hoistway of an elevator equipped with a linear motor drive system,
Is a hoistway, 2 is a hoistway wall, 3 is a car, 4 is a counterweight, 5 is a rope, 6 is a return car, 7 is a car guide rail, 8 is a guide shoe, 9 is a counterweight guide rail, and 10 is a counterweight guide rail. A guide shoe of a counterweight, 11 is a linear induction motor, 12 is a primary winding of the linear induction motor, and 14 is a brake device. The guide rail 9 has a function of a secondary conductor of the linear induction motor 11.

As shown in the drawing, a car 3 and a counterweight 4 are suspended at both ends of a rope 5 via a return wheel 6 in a hoistway 1. The primary winding 12 of the linear induction motor 11 is mounted on the counterweight 4. When the primary winding 12 of the linear motor is excited, a relative thrust is generated between the primary winding 12 and the guide rail 9 to drive the counterweight 4 and to move the counterweight 4 up and down along the guide rail 9.
Moves up and down in the direction opposite to the counterweight 4 while being guided by the guide shoes 8 along the guide rail 9. When the car stops or in an emergency, the brake device 14 grips the guide rail 9 to generate a braking force, and stops the car 3 and the counterweight 4.

FIG. 5 shows a conventional method for supporting a guide rail. The guide rail 9 is connected in the longitudinal direction by a joint 15 and is fixed to the hoistway wall 2 by a bracket 16. Fasteners 18 are fixed to the floor 17 of the pit, and the lower end of the guide rail 9 is
And is fixed to the floor surface 17 through the base. The upper end of the guide rail 9 is connected to the ceiling 2 of the hoistway 1 via the fastener 19.
0. In the conventional elevator of the linear motor drive system, the guide rail 9 is supported as described above.

[0005]

By the way, in the above-mentioned conventional elevator, forces in the upper and lower directions are generated on the guide rail 9 by the thrust during acceleration / deceleration or the operation of the brake device 14, for example. That is, when the brake 14 is operated while the car 3 is descending (the balancing weight 4 is being raised),
An upward force acts on the guide rail 9 and a downward force acts on the guide rail 9 when the brake 14 is operated while the car 3 is moving up (the balancing weight 4 is moving down). This force is proportional to the load capacity of the elevator, but can be quite large in emergency braking.

In general, the lower part of a building is firmly constructed to support its own weight, but the strength of the upper part which does not need to support its own weight is not large. Therefore, the building can respond to the downward load with strength, but is vulnerable to the upward force. When the upper part of the building is subjected to the above-mentioned elevator, the structure of the upper part of the building needs to be strengthened. . That is, in a building equipped with a linear motor driven elevator as described above, the columns and beams at the top of the building need to be strengthened, which not only increases the cost of the building,
There is a possibility that the effective use area of the building will be reduced due to the columns and beams that have been increased in size.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem of the guide rail of an elevator having a conventional linear motor drive system, and does not require reinforcement of the upper part of the building.
An object of the present invention is to provide an elevator guide rail capable of suppressing an increase in the cost of a building.

[0008]

An elevator guide rail of a linear motor drive type according to the present invention is hung on one end of a rope, and moves up and down in a hoistway along a guide rail of a car. And a balance weight that is suspended at the other end of the rope via the guide rail of the balance weight and moves up and down in the opposite direction to the car along the guide rail of the balance weight, and is driven by a linear motor driving device mounted on the balance weight. In a linear motor drive type elevator, a guide rail support is fixed to the lower wall of the hoistway, and a lower end of the guide rail is fixed to the guide rail support, and an upper end of the guide rail and the hoistway A gap is provided between the ceiling and the ceiling.

[0009]

Since the guide rail of the elevator according to the present invention is constructed as described above, when an upward force is applied to the guide rail by an emergency braking operation, the load is applied from the lower end of the guide rail to the guide rail. It is transmitted to the lower wall surface of the hoistway via the support base. Since the upper end of the guide rail is not connected to the ceiling of the building, the ceiling of the shaft is not affected.

[0010]

Embodiment 1 FIG. 1 is a side view of an elevator guide rail according to an embodiment of the present invention, in which 1 to 20 are the same or equivalent parts as those of a conventional apparatus, 30 is a guide rail support, and 31 is a guide rail support. Lateral member, 3
2, 33 are brackets, 34 is bolts, and 35 is a hoistway wall surface. As shown in FIG.
The guide rail support 30 to which the 2 and 33 are fixed is placed on the pit floor surface 17, and the bracket 32 of the guide rail support 30 is fixed to the wall 35 below the hoistway with bolts 34, The lower end of the rail 9 is fixed. A gap t is provided between the upper end of the guide rail 9 and the ceiling 20.

Since the guide rail according to the present invention is supported in this manner, even when an upward force is applied to the guide rail 9 during an emergency stop of the car 3, the load is applied via the guide rail support 30. It is transmitted to the shaft wall 35 and the ceiling 2
0 No force acts on the upper part of the building.

The configuration of the guide rail support 30 is not limited to the configuration of the present embodiment, but may be another configuration. The point is that the load acting upward on the guide rail can be transmitted to the hoistway wall surface 35.

Embodiment 2 FIG. 2 is a side view showing another embodiment of the present invention. In FIG. Bracket, 4
2a is a bracket fixed to the slide arm 42, 43,
44 is a bolt. The bracket 42 a of the slide arm 42 placed on the pit floor 17 is fixed to the pit wall 35 by bolts 43 , and the bracket 41 of the horizontal member 41.
The lower end of the guide rail 9 is fixed to a. Further, the horizontal member 41 is slidably engaged with the slide arm 42 and the bolt 4
4, so as to be fixed to the slide arm 42 at a predetermined position.

The guide rail support 40 has the same support function as the guide rail support 30 in the first embodiment, and can easily cope with a change in the interval between the hoistway wall 35 and the guide rail 9, thereby reducing the installation time. Can be shortened.

The configuration of the guide rail support 40 in which the distance between the guide rail 9 and the hoistway wall 35 is adjustable is not limited to the configuration of this embodiment, but may be another configuration.

[0016]

As described above, the present invention hangs on one end of a rope, moves up and down the hoistway along a guide rail of a car, and hangs on the other end of the rope via a return wheel. A linear motor drive type elevator driven by a linear motor driving device mounted on the counterweight, the counter having a counterweight moving vertically in the opposite direction along the guide rail of the counterweight. A guide rail support is fixed to the lower wall of the road, and the lower end of the guide rail is fixed to the guide rail support, and a gap is provided between the upper end of the guide rail and the hoistway ceiling. Even in the event of an emergency, when the brake is activated and an upward force is applied to the guide rail, the load is transmitted to the lower wall of the hoistway via the guide rail support, and transmitted to the ceiling of the hoistway. Since there is no, there is no need to strengthen the building top.

[Brief description of the drawings]

FIG. 1 is a side view of a guide rail according to an embodiment of the present invention.

FIG. 2 is a side view of a guide rail according to another embodiment of the present invention.

FIG. 3 is a cross-sectional view of a conventional elevator equipped with a linear motor drive system.

FIG. 4 is a side view of a conventional elevator equipped with a linear motor drive system.

FIG. 5 is a side view of a conventional guide rail.

[Explanation of symbols]

 30 guide rail support 31 horizontal member 32 bracket 33 bracket 34 bolt 35 pit wall surface 40 guide rail support 41 horizontal member 41a bracket 42 slide arm 42a ... Bracket 43 ... Bolt 44 ... Bolt

Claims (1)

(57) [Claims] 1. A car which is hung at one end of a rope, and which goes up and down the hoistway along a guide rail of a car, is hung at the other end of the rope via a return wheel, and is connected to a guide rail of a counterweight. A balancing weight that moves up and down in the opposite direction along with the car, and in a linear motor drive type elevator driven by a linear motor driving device mounted on the balancing weight, a guide fixed to the lower wall surface of the hoistway A linear motor drive system comprising a rail support, wherein a lower end of the guide rail is fixed to the guide rail support, and a gap is provided between an upper end of the guide rail and the hoistway ceiling. Elevator guide rail.