JPS6387483A - Guide apparatus for cage of elevator - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for guiding an elevator car to a guide rail without contacting it.

[Conventional technology]

An elevator car is raised and lowered by guide devices such as guide shoes and guide rollers provided on the car being guided by guide rails. Therefore, if there is a step in the guide rail joint, the car will sway.

Makes the ride uncomfortable. Therefore, methods have been developed to guide the car to the guide rails without contacting them.

Figures 3 to 11 are diagrams showing a conventional elevator car guide device disclosed in, for example, Japanese Patent Publication No. 58-39753, with Figure 9 being a front view and Figure 10 being the same as in Figure 9. X-X
FIG. 11, an enlarged line cross-sectional view, is a control circuit diagram of the electromagnet.

In Figures 9 and 10, il) and fl) are iron guide rails that are erected facing each other along the hoistway (2) and have a T-shaped cross section; (3) are guide rails (1);
), (1) and is suspended by the main rope (4).

(5) A car compartment installed within the car frame (3), (6) ~
(8) Electromagnets fixed at two locations above and below (the lower part is not shown) on the - side of the car frame (3), (9), fill
is formed into a nearly C-shape, and its end faces are each an iron core that faces both sides of the guide rail (a) with a gap in between.
Similarly, υ is the iron core facing the top surface of the guide rail (1) with a gap in between, and α ri ~ α ri are the iron cores (9)~(
11) K-wound coils (6A) to (8A) are the electromagnets installed on the right side of Fig. 10, and are ultimately electromagnets (6).
The same devices as in ~(8) are installed at four locations above and below the car frame (3). α is a gap detector that is fixed to the car frame (3) and outputs an output according to the change in the gap between the iron core Ql and the side surface of the guide rail (1).

For example, it can also be detected by detecting capacitance.

d is a gap detector for the gap between the iron core (lυ) and the top surface of the guide rail (1), and aη is the electromagnet (7) on the right side of Fig. 10.
This is the air gap detector for A).

In Fig. 11, (II is an AC power supply, +1'J, C1l is a thyristor, 3υ is an ignition circuit corresponding to a thyristor (11, go), and they are differentially connected to each other according to the output of the air gap detector aS. It works. In addition to the above, the circuit in Figure 11 includes one set for each electromagnet (8) and (8A), and one set for each electromagnet (6A).
, (7A) is also provided with one set of basket frames (
3) is similarly provided at the bottom. However, the source (
) is shared by all.

A conventional elevator car guiding device is constructed as described above, and its operation will be explained mainly with respect to the electromagnets (6) to (8).

Iron core (IQ and guide rail (if the air gap on the side of 11 is at a predetermined value, according to the output of air gap detector α)) 9 firing circuit Qυ, @ is thyristor heating The coil C13 (13 is energized and becomes an electromagnet (6)).

The attraction forces in (7) are equal to each other. In this state, the car frame (3) moves up and down.

Now, the gap between the sides of the iron core (IQ and the guide rail (1) has become narrower than the specified value (the gap between the iron core (9) and the guide rail +
1) If the side q air gap becomes wider), the air gap detector uS will emit a corresponding output and one ignition circuit (goods).

@ operate differentially with each other, thyristor +19,
Control the firing angle of an to increase the energization of the coil (17J,
Weaken the energization of the coil α. That is, the attractive force of the electromagnet (6) is strengthened, and the attractive force of the electromagnet (7) is weakened. As a result, the electromagnet (6) approaches the guide rail +11 and the electromagnet (7) moves away, so that the respective air gaps are always kept constant. The same goes for the electromagnets (6 people) and (7A), and these keep the gap in the front and rear directions of the car (5) constant. The same applies to the electromagnets (81, (8A)), and the gap in the left and right direction of the car (5) is always kept constant.As a result, the car frame (3) is positioned relative to the guide rail (1). The ride comfort in the cab (5) is improved by contactless guidance.

[Problem that the invention seeks to solve]

In the conventional elevator car guide device as described above, the electromagnets (6) to (8) and (6k) to (8A) face both sides and the top surface of the guide rail (1). Elevator - 12 pieces (6 pairs) are required for each elevator.

The mounting part has an extremely complicated structure. Similarly.

Thyristor cake, ignition circuit C21), @ also requires 12 circuits, and the control circuit is also large. There are other problems.

This invention was made in order to solve the above-mentioned problems.Eight electromagnets are required per elevator, eight two-firing circuits are required, and both the electromagnet mounting part and the control circuit can be configured easily. An object of the present invention is to provide an elevator car guiding device.

[Means for solving problems]

In the elevator car guide device according to the present invention, the cross-sectional shape of the guide rail is formed into a substantially triangular shape, and the apexes of this triangular shape are arranged to face each other to form two sides sandwiching the apexes. On the face.

Electromagnets are arranged facing each other.

[Effect]

In this invention, electromagnets are arranged oppositely on two sides of a guide rail having a substantially triangular cross section.

Only eight electromagnets are required per elevator, and the control circuit becomes simpler as well.

〔Example〕

Figures 1 to 4 are diagrams showing one embodiment of the present invention.
The figure is a sectional view taken along the line 1-1 in Figure 2, Figure 2 is a front view, Figure 3 is a control circuit diagram of an electromagnet, and Figure 4 is a flowchart showing the operation of the arithmetic unit. Shows the same parts.

In Figures 1 and 2, (c) stands along the hoistway (2) and is made of a hollow iron material with a nearly triangular cross section, and is arranged with the apexes of the triangles facing each other. Electromagnet (6), (force iron core (9)
, (it) respectively face the side surface (23a) of the guide rail (to) (the surface forming the two sides sandwiching the apex of the above-mentioned triangle) with a gap in between. Electromagnet (6A
).

(7 people) have iron core 124, (c) and coil (to), (
(b) with iron core @.

The end face of (to) is the side surface (25a) of the guide rail (to).
are placed opposite. Air gap detector α9 is iron core ullI
and the gap detector u? ), @, fI in the same way as electromagnet (7A), ts), (6A)
It is set up correspondingly. Electromagnet +6), (7)
, (6A) l (7A) and void detector (to),
αri, CA.

(A similar device to 1η is also installed at the bottom of the heel (3).

In Fig. 3, C3l is a gap detector (to), tie,
@ , αη is a calculation device consisting of a microcomputer that calculates the inclination of the car frame (3), and cpυ(30
A) It has a memory (30B), an input circuit (soc) and an output circuit (30D), and the input circuit (3aC) is an air gap detector ■, a! 9. (c).

connected to aη. Cυ~(b) is the output circuit (so
D) Connected to coil a'a, C1:1, (E)
This is an ignition circuit that ignites the thyristors (to) to (to) connected to 1go. In addition.

A similar circuit is provided for the electromagnet at the bottom of the car frame (3).

Next, the operation of this embodiment will be explained with reference to the flowchart of FIG. 4 (stored in the memo +7 (30B) of the arithmetic unit).

Gap detector (to), +1!9, (to), the gap between αD and the side surface (23a) of the guide rail (to), in other words, the gap between the iron core (9), αI, r24° (c) and the side surface (23a) ), the gap detector (to),
Based on the outputs of αS, Ca, and αη, the arithmetic unit (to) connects the thyristor (to) to (to) through the ignition circuit 6υ to (b).
By controlling the firing angle at an appropriate angle, the coil is set at a3° (to),
@ is energized and electromagnets (6), (7), (6
A) The attraction forces of (7 people) are equal to each other. In this state, the car frame (3) moves up and down.

Now, in step Q0, the gap y between the gap detector (to) and the side surface (23a) of the guide rail @ is detected, and in step (6)
) to determine whether the gap y is equal to the predetermined value X. If the gap y is equal to the predetermined value I, the process returns to step i40.

Subsequent steps (c) to (c) are not executed.

When it is determined that the air gap y is not equal to the predetermined value X.

Proceeding to the next step, it is determined whether the gap y is smaller than a predetermined value I. The gap y is smaller than the predetermined value I.

In other words, when it is determined that the gap between the gap detector (to) and the guide rail G has become narrower, the ignition circuit Gl) is activated in step I.
Issue a command to increase the firing angle. The thyristor (to) is now controlled and the energization of coil 0 is weakened,
'4 The attractive force of the magnet (6) weakens υ, and the electromagnet (6) moves away from the guide rail. When step 4 determines that the gap y is larger than the predetermined value I, that is, the gap between the gap detection 6 @ and the guide rail @ has become wider, in step 4, the ignition angle is reduced to the ignition circuit 6υ. issue a command. Now, the attraction force of the electromagnet (6) is strengthened υ, and the guide rail @
approach. Other electromagnets L7), (6A), (7
A) is similarly controlled.

In this way, the arithmetic device (to) now moves to the basket frame (3).
Calculate which direction the is going to tilt.

And how should the electromagnets (s), (6A), m, (7 people) be energized to generate a force in the opposite direction to the direction in which the car frame (3) is about to tilt, so that the car frame (3) Calculate whether it is possible to return it to a predetermined position. Then, the arithmetic unit (7) issues a command to the 2-striking circuit GO- (Incorporated) based on the calculation result, and the 9-striking circuit c3η~(
b) controls the firing angle of the thyristor (to) to (to),
Coil 117J, Q3, (c).

Adjust the bias in (a). Now the air gap detector (to),
(L!9.

■, (Gap between Lη and guide rail (to), in other words, electromagnet 16), L7), (6 people>, (7
The gap between A) and the guide rail (C) is always kept constant.

Further, the same applies to the electromagnet provided at the bottom of the car frame (3).

FIG. 5 is a diagram corresponding to FIG. 1 showing another embodiment of the present invention.
The guide rail opening has a substantially L-shaped cross section and a triangular shape with no side on the hoistway (2) side. It is clear that similar effects can be obtained even with such a shape.

Figures 6 to 8 also show other embodiments of the invention, with Figure 6 being a view equivalent to Figure 1, Figure 7 being a conceptual plan view of the emergency stop device, and Figure 8 being a front view as well. be.

In this embodiment, the cross section of the guide rail is formed into a substantially triangular shape, and a protrusion (23b) that protrudes toward the car frame (3) is provided along the entire length at the apex of this triangular shape.

Now, the emergency stop device (52) normally used in elevators is provided at the bottom of the car frame (3) and has two gripping tools (52).
3), (54) and low t (55). The gripper (56) has a parallel surface separated from the side surface of the guide rail (1) by a gap, and the gripper (56) has two grippers (5 also has an inclined surface), and this slope and the side surface of the guide rail (1) A roller (55) is arranged in between. Although a detailed explanation will be omitted, when the car frame (3) is lowered, when a speed governor (not shown) is activated, the car frame (3), that is, the gripper (53) is moved while the rollers (55) are stopped. , (54)
is lowered, the roller (55) is relatively lowered by the gripper (5).
4) is pushed up between the inclined surface of the guide rail (1) and the side surface of the guide rail (1).

The car frame (3) is designed to stop suddenly.

However, with the cross-sectional shape of the guide rail (C) in Figure 1, the emergency stop device (52) shown in Figures 7 and 8 cannot be applied, and a new emergency stop device must be designed. . The protrusion (2sb) in Fig. 6 makes this possible, and the protrusion (23b) is different from the conventional guide rail (
It performs the same function as 1), and the emergency stop device (52) can be used as is. Note that this protrusion (2s
b) was installed at the triangular apex of the guide rail @, but electromagnets L6), L7), (6A), (7A)
It may be placed anywhere as long as it does not come into contact with other objects.

Also, the guide rails (c) in Figures 1, 5, and 6
Although a hollow cross section was used, there is no problem even if the cross section is a solid cross section.

〔Effect of the invention〕

As explained above, in this invention, the outer shape of the cross section of the guide rail is formed into a substantially triangular shape, the apexes of this triangular shape are arranged opposite to each other, and the surfaces forming the two sides sandwiching the apexes are Since the electromagnets are arranged opposite to each other, only eight electromagnets are required per elevator, which has the effect of simplifying both the installation part and the control circuit.

[Brief explanation of the drawing]

1 to 4 are diagrams showing an embodiment of the elevator car guiding device according to the present invention, and FIG.
1-line sectional view, FIG. 2 is a front view, FIG. 3 is a control circuit diagram of the electromagnet, and FIG. 4 is a flowchart showing the operation of the arithmetic unit.
5 to 8 are views showing other embodiments of the present invention, FIGS. 5 and 6 are views corresponding to FIG. 1, FIG. 7 is a conceptual plan view of the emergency stop device, and FIG. Front view of Figure 7, Figure 9M9 - 1st
1 is a diagram showing a conventional elevator car guiding device, FIG. 9 is a front view, FIG. 10 is a sectional view taken along line X-X1s in FIG. 9, and FIG. 11 is a control circuit diagram of an electromagnet. In the diagram, (2) is the hoistway, (3) the heel (car frame), f5
) is a basket (basket presentation), 16), (7), (
6A) and (7A) are electromagnets. 0, αη is the gap detector, (to) is the guide rail, (
23a) is a side surface, @ and @ are gap detectors, and (7) is an arithmetic device. Note that the same reference numerals in the two figures indicate the same or corresponding parts.

Claims (2)

[Claims] (1) Guide rails made of magnetic material are erected facing each other along the hoistway, a car is arranged between the guide rails, and a plurality of cars are arranged horizontally facing the guide rails across a gap. In the device, the guide rail is provided with an electromagnet and a gap detector for detecting the gap, and the electromagnet is controlled by the output of the gap detector to guide the up and down of the car, and the guide rail has an outer shape of its cross section. A guiding device for an elevator car, characterized in that the vertices of the triangular shape are arranged to face each other, and the electromagnets are arranged facing each other on the side surfaces forming two sides sandwiching the vertices. (2) The elevator car guide device according to claim 1, wherein a protrusion for gripping an emergency stop device is formed on a portion of the guide rail facing the car over the entire length and protrudes toward the car.