JPH043791A - Linear motor-driven elevator - Google Patents

Abstract

PURPOSE:To reduce the horizontal component force support of a linear motor by protruding a plate-shaped secondary side conductor from a climbing body, providing a supporter having a U-shaped cross section and surrounding the secondary side conductor in the U-shape on a hoistway, and fitting primary side coils on both side walls in the U-shape respectively. CONSTITUTION:A primary side coil is connected so that the relative positions of a secondary side conductor 9 and primary side coils 8 are set to the preset conditions and horizontal component forces in the width direction and the depth direction of a hoistway 1 are offset when a linear motor is excited. When a climbing body 3 is lifted or lowered by the linear motor, the climbing body 3 is theoretically held at the preset position in the horizontal direction of the hoistway 1. The horizontal load applied to the climbing body 3, a guiding tool 3a and a guide rail 7 is reduced when the climbing body 3 is lifted or lowered. The horizontal component force are applied on both faces of the secondary side conductor 9 and offset. Relevant members such as the climbing body 3 are not required to be strongly manufactured in particular, and an elevator can be made lightweight and manufactured at a low cost.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the structure of a linear motor-driven elevator that is constituted by members provided on a hoistway and a hoisting body.

[Prior Art] FIG. 4 shows a conventional linear motor-driven elevator as disclosed in, for example, Japanese Patent Application Laid-Open No. 59-64490.

In the figure, (1) is a hoistway, (2) is a car placed in the hoistway (1), (3) is a hoisting body consisting of a counterweight placed in the hoistway (1), and (4) is a car placed in the hoistway (1). ) is the main cable that is wrapped around the sheave (5) at the top of the hoistway (1) and suspends the car (2) on one end and the elevator (3) on the other end, and (6) is the main cable that is wrapped around the sheave (5) at the top of the hoistway (1). The rail for the heel (1) is erected via a bracket (6a) fixed to the wall, and the rail (7) is erected via a bracket (7a) fixed to the wall of the hoistway (1) for the elevator. (3)
(8) is a primary coil fixed directly to the wall of the hoistway (1) and placed along the hoistway of the hoist (3); (9) is a rail provided on the hoistway (3); This is a secondary conductor facing the primary coil (8).

A conventional linear motor-driven elevator is constructed as described above, in which the car (2) is guided by the rails (6) and the elevator (
3) is guided by the rail (7) and moves up and down a predetermined route of the hoistway (]). Furthermore, when the linear motor composed of the primary coil (8) and the secondary conductor (9) is energized, the elevator (3) and the car (2) connected by the main rope (4)
move up and down in opposite directions.

[Problems to be solved by the invention] In the conventional linear motor-driven elevator as described above,
Due to the energization of the linear motor, between the hoistway (1),
A horizontal component force that is the same in depth is generated. This horizontal force acts on the elevating body (3), and the load is supported by the elevating body (3) itself, and the rail (7) and bracket (7a) via the guide of the elevating body (3). Therefore, the elevating body (3)
, each member such as the rail (7) needs to be made stronger, which increases the weight and makes it more expensive.Also, due to the increased weight, the linear motor itself becomes larger, and the electric power such as the drive power supply is required. There was also the problem of increasing the capacity of the equipment.

The present invention was made to solve such problems, and an object of the present invention is to obtain a linear motor-driven elevator in which the horizontal component of the linear motor is supported less by members such as an elevating body and a rail.

[Means for Solving the Problems] In the linear motor-driven elevator according to the present invention, a plate-shaped secondary conductor is provided protruding from the elevating body, and the hoistway has a U-shaped cross section, and two conductors are formed within the U-shape. A support body surrounding the secondary conductor is provided, and a primary coil is mounted on each side wall of the U-shape.

Further, a guide rail for the elevating body is provided on the support body at a position facing the elevating body.

[Function] In the linear motor-driven elevator configured as described above, the relative positions of the secondary conductor and the primary coil are set to predetermined conditions, and the horizontal component force in the hoistway frontage direction and depth direction when the linear motor is energized is The primary coil is connected so that the For this reason.

The horizontal load when lifting and lowering objects using linear motors is reduced.

[Embodiment] Figures 1 and 2 are diagrams showing an embodiment of the present invention. In Figure 6, the same reference numerals as in Figure 4 indicate corresponding parts, and (3) is a cage with guide tools on both sides. (3a) is provided with an elevating body, and (9) is a steel plate body provided with 2 formed on the front and rear surfaces of steel plates respectively protruding from both sides of the elevating body (3).
The secondary conductor (10) is a shaped steel support with a U-shaped cross section.The secondary conductor (9) is placed between both side walls (10a).
A recess (Job) is formed in which are arranged in a fitted state, and a flange part (10c) is provided at the end of one side wall (log) facing the guide tool (3a), and the base of the U shape is raised and lowered. The passageway (1) is fastened to the wall and erected along the ascending and descending route of the elevating body (3). (8) is a primary coil mounted inside the side wall (10a) and placed facing the front and rear surfaces of the secondary conductor (9), and (7) is a flange portion (10
c) is a guide rail fixed to the guide rail with which the guide tool (3a) is movably engaged.

In the linear motor-driven elevator configured as described above, the relative positions of the secondary conductor (9) and the primary coil (8) are set to a predetermined condition, and when the linear motor is energized, the relative position of the secondary conductor (9) and the primary coil (8) is , the primary coil is connected so that the horizontal component force in the depth direction is canceled out. As a result, when the elevating body (3) is raised or lowered by the linear motor, the elevating body (3) is theoretically held at a predetermined position in the horizontal direction of the hoistway (1). Therefore, the elevating body (3),
The horizontal load acting on the guide tool (3a) and the guide rail (7) when the elevating body (3) is raised and lowered is reduced. In addition, horizontal component forces act on both sides of the secondary conductor (9) and cancel each other out.

Therefore, there is no need to make the elevating body (3) and other related members particularly strong, and the weight can be reduced and manufactured at low cost.

Another advantage is that the capacity of related devices such as the linear motor and the linear motor power supply can be reduced as the weight of related members is reduced. Furthermore, since the secondary conductor (9) can be designed to be separable from the elevating body (3), the manufacturing and installation of the elevating body (3) becomes easier.

FIG. 3 is a diagram showing another embodiment of the present invention, in which the same reference numerals as in FIGS. 1 and 2 indicate corresponding parts in FIG. This is a guide rail.

In the embodiment shown in FIG. 3 as well, the primary coil (8) is provided facing the front and rear surfaces of the secondary conductor (9), so a detailed explanation will be omitted, but FIGS. It is clear that the same effect as in the embodiment can be obtained.

In the embodiment shown in FIG. 3, the support body (10) and the guide rail (7) are integrated, so the number of parts can be reduced and the structure can be simplified.

[Effects of the Invention] As explained in Section 7 above, this invention includes a support body having a U-shaped cross section erected in the hoistway, and a plate-shaped secondary conductor that protrudes from the hoistway and fits into the U-shape. The primary coils facing the front and rear surfaces of the secondary conductor are mounted on the U-shaped inner surface of the support, and a guide rail for the guide for the lifting body is provided at the end of the U-shaped side wall of the support. It is something that As a result, the primary coil is connected so that the horizontal component forces in the hoistway frontage and depth directions when the linear motor is energized are canceled out, thereby reducing the horizontal load when the elevating body is raised and lowered by the linear motor. This has the effect of simplifying the structures of related members such as the elevating body and guide rails to reduce manufacturing costs, and reducing the capacity of the linear motor device by reducing weight.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of a linear motor-driven elevator according to the present invention, and is an enlarged cross-sectional view corresponding to FIG. 4, which will be described later. FIG. 2 is a perspective view partially cut away and explaining the main part of FIG. , FIG. 3 is a view corresponding to FIG. 1 showing another embodiment of the J linear motor driven elevator according to the present invention, and FIG. 4 is a conceptual longitudinal sectional view showing a conventional linear motor driven elevator. (1)... Hoistway, (3)... Lifting body, (3a)
...Guidance tool. (7)...Guide rail, (8)...Primary coil,
(9)...Secondary side conductor, (10)...Support,
(10b) ... recess.

Claims (1)

[Claims] A plate-shaped secondary conductor is provided along the height direction of the hoistway, and is provided along the vertical direction of the hoistway and protrudes from the vertical surface of the hoistway. 1 placed at opposite positions on the front and rear sides of the secondary conductor.
a linear motor consisting of a secondary coil; a linear motor that is installed vertically in the hoistway, has a U-shaped cross section, and is arranged so that the secondary conductor is surrounded by the U-shaped recess;
A linear motor-driven elevator comprising: a support body to which a next coil is mounted; and a guide rail mounted on the support body at a position facing the lift body and movably engaged with a guide tool for the lift body.