JPH03264483A - Roller guide apparatus of elevator - Google Patents

Abstract

PURPOSE:To automatically adjust a roller guide position in correspondence to running speed by placing a hydraulic jack which appears vertically between a lift and the roller guide. CONSTITUTION:A lift comprising an upper frame 2, vertical frames 3, a lower frame 4 and a cage 5 which are hung by a rope 1 is constituted to be vertically guided along a guide rail 8 by a roller guide device 7 attached to the upper frame 3 and the lower frame 4 via a vertical hydraulic jack 6. A relationship between a hydraulic unit 9 and a cylinder 10 in this jack forms a protrusion circuit and an immersion circuit in the vertical direction of a plunger 12 according to an amount of oil fed by an oil feed pipe 11 which connects the unit 9 to the cylinder 10. When an elevator starts to be accelerated according to a speed pattern, the plunger protrusion circuit is formed so that the plunger 12 performs protrusion and stops when the oil amount corresponding to speed is reached. When deceleration is started, the plunger immersion circuit is formed so that the plunger 12 performs immersion and stops when the oil amount corresponding to the speed is reached.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a roller guide device for an elevator.

[Conventional technology]

Generally, an elevating body of an elevator moves up and down along a guide rail by rolling a roller guide device attached to the elevating body into contact with the guide rail.

By the way, in an elevator, vibrations are transmitted to the elevating body via the roller guide depending on the degree of installation accuracy such as the level difference, parallelism, and perpendicularity of the joints of the guide rails, which affects the ride comfort.

In general, the roller guide of an elevator is fixed to the upper and lower frames of the elevating body for low-speed elevators, and for high-speed elevators, the effect on ride comfort is reduced by separating the roller guide and the elevating body. In order to alleviate this problem, a method has been used in which stands are fixed to the upper frame and the lower frame, and the roller guide is fixed via the stands.

Incidentally, as a reference known example of this type of device, for example, one described in Japanese Utility Model Application Publication No. 57-30273 can be mentioned.

[Problem to be solved by the invention]

In general, elevators have an upper clearance when the elevator is at the top floor and a lower clearance when it is at the bottom floor, depending on the rated speed.
Therefore, in the case of high-speed applications, even though it is originally desired to ensure a long distance between the elevating body and the roller guide, it depends on the above-mentioned clearance relationship.

The problem is that there is a limit to that distance.

An object of the present invention is to provide a roller guide device for an elevator that allows the position of the roller guide to correspond to the speed.

[Means to solve the problem]

The above object is to provide an elevator having an elevating body that ascends and descends in a hoistway, a guide rail that guides the elevating body up and down, and a roller guide that guides the elevating body along the guide rail attached to the elevating body. In the roller guide device, this is achieved by interposing a hydraulic jack that appears and retracts in the vertical direction between the elevating body and the roller guide.

[Effect]

By interposing the hydraulic jack that moves up and down in the vertical direction between the elevating body and the roller guide as described above, the position of the roller guide can be automatically adjusted to correspond to the speed.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

Fig. 1 is an overall configuration diagram showing one embodiment of the elevator roller guide device of the present invention, Fig. 2 is a detailed view of the main parts, Fig. 3 is an operation flowchart of the device, and Fig. 4 is a speed pattern diagram. .

First, the overall configuration will be explained. In the figure, the elevating body consisting of an upper frame 2, a vertical frame 3, a lower frame 4, and a car 5, suspended from a rope 1, has an upper frame 3 and a lower frame 4.
A roller guide device 7 attached to the roller via a vertical hydraulic jack 6 guides it vertically along a guide rail 8.

Next, the operation will be explained.

In the figure, the relationship between the hydraulic unit 9 and the cylinder 10 forms a projecting circuit and a retracting circuit in the vertical direction of the plunger 12 depending on the amount of oil sent by an oil feed pipe 11 connecting the two.

That is, the mechanism is such that the position of the roller stand 13 fixed to the tip of the plunger 12 automatically moves in the vertical direction relative to the positions of the upper frame 2 and the lower frame 4.

Furthermore, the operation of the above mechanism during actual elevator operation will be explained with reference to FIG.

First, when the elevator is in a stopped state and a car call or a landing call occurs on any floor, the elevator control circuit generally forms an optimal speed pattern to drive the elevator from the currently stopped floor to the destination floor. do.

This speed pattern will be explained with reference to FIG.

The process from when an elevator starts until it stops consists of three types of processes: acceleration, steady running, and deceleration.

In other words, when the distance traveled is short, such as in short-floor operation, the speed must be slowed down in order for the above process to hold true, and similarly, when the distance traveled is long, such as in long-floor operation, the speed must be increased. becomes possible.

When the elevator starts accelerating according to the speed pattern explained above, a plunger protrusion circuit is formed and the plunger 12
performs an ejection operation, and this circuit stops when the amount of oil corresponding to the speed obtained in the above speed pattern is reached.

Next, when the elevator starts decelerating, a plunger retraction circuit is formed and the protruding plunger 12 performs a retraction operation. This circuit stops when the amount of oil corresponding to the above speed is reached.

According to this embodiment, the position of the roller guide can be automatically adjusted in accordance with the traveling speed of the elevator.

〔Effect of the invention〕

According to the present invention, since the position of the roller guide can be automatically adjusted, the position of the elevator roller kite can be automatically adjusted to correspond to the traveling speed without being limited by the upper or lower clearance of the car! 1111 can be provided.

[Brief explanation of drawings]

Fig. 1 is an overall configuration diagram showing one embodiment of an elevator roller guide device according to the present invention, Fig. 2 is a detailed view of the main part of Fig. 1, Fig. 3 is an operation flowchart of Fig. 2, and Fig. 4 is a speed pattern diagram supplementing the explanation of FIG. 3. 2...Top frame, 4...Bottom frame, 7...
...Roller guide. 8... Guide rail, 9... Hydraulic unit, 10... Cylinder, 11... Oil feed pipe, 12... Plunger. Time □

Claims (1)

[Claims] (1) Elevator rollers having an elevating body that ascends and descends in a hoistway, a guide rail that guides the elevating body up and down, and a roller guide that guides the elevating body along the guide rail attached to the elevating body. In the guide device,
A roller guide device for an elevator, characterized in that a hydraulic jack that appears and retracts in the vertical direction is interposed between the elevating body and the roller guide.