JPS61136880A - Elevator device - Google Patents

Abstract

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

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to improvement of an elevator system, particularly a device for preventing deformation of rolling rollers that roll on guide rails to guide the elevator car up and down. be.

[Conventional technology]

Figure 4 shows a general elevator system that uses rolling rollers to guide the elevator car up and down.
1) The car, (2Hd) and the main rope connected to the side of the floor of (1), (3) the guide rail installed in the hoistway (
4) There are guide rails (3) on the upper and lower sides of the above car (1).
Rolling rollers arranged on opposite sides of the guide rail (3) roll on the side surface of the guide rail (3) to guide the elevation and descent of the heel (1). (γ) is a floor.

Therefore, the main rope (2) connected to the side of the floor of the car (1)
), the heel (1) is driven up and down, but at this time, if the fixed position of the main rope (2) to the heel (1) side is off the center of gravity of the heel (1), the car An unbalanced load acts on (1), and this unbalanced load causes a moment to rotate the heel (1). This moment is supported by the rolling rollers (4), but if the outer peripheral surface is made of a hard material such as metal, noise and vibration may occur at the contact surface with the guide rail (3). (1), the outer peripheral surface of the rolling roller (4) is usually made of an elastic material such as rubber to suppress noise and make it difficult for the vibration to be transmitted to the heel (1). 0 However, when the heel (1) is stopped for a long time, the load acts intensively on one location on the outer circumferential surface of the rolling roller (4), compressing the elastic body on the outer circumferential surface and causing the arc portion to It will deform into a flat shape.

If the heel (1) is run in this state, there is a problem in that periodic vibrations and noise are generated when the deformed portion of the rolling roller (4) contacts the guide rail (3). Therefore, elevator apparatuses have been proposed in which the deformation of the rolling rollers (4) is prevented.

FIG. 5 shows a conventional elevator system of this type, which is disclosed in, for example, Japanese Patent Application Laid-Open No. 52-55143.
In the figure, the same reference numerals as in FIG. 4 indicate the same or corresponding parts. (5
) The cam (6) is installed on the guide rail (3) and engages with the cam (5) at the stop position of the car (1) to move the rolling roller (4) to the guide rail. (3) This is an auxiliary roller that lifts it off the ground.

Conventional elevator snowmaking is configured as described above, with a basket (
1), the rolling rollers (4) are on the guide rails (3).
), but when the car (1) stops, the auxiliary roller (6) engages and rides on the cam (5). At this time, a slight gap is created between the rolling roller (4) and the side surface of the guide rail (3), and no load acts on the rolling roller (4). This prevents the elastic body on the outer peripheral surface of the rolling roller (4) from deforming.

[Problem that the invention seeks to solve]

In the conventional elevator device as described above, an auxiliary roller (6), a cam (6), and surrounding members are specially required for when the elevator stops, and the auxiliary roller (6)
Since the contact between the roller and the cam (5) supports the uneven load of the roller (1), the auxiliary roller (6) and the cam (5)
) requires the same strength as the rolling rollers (4) and guide rails (3), resulting in a large external size. Another problem is that the member for mounting the auxiliary roller (6) on the guide rail (3) and the member for fixing the cam (6) to the heel (1) have a complicated structure.

This invention has been made to solve these problems, and provides an elevator device that can effectively prevent deformation of the outer circumferential surface of rolling rollers without using any special members such as auxiliary rollers or cams. With the goal.

[Means for solving problems]

The elevator apparatus according to the present invention includes a detection means for detecting that the car has stopped for a predetermined period of time, and a running means for causing the car to travel based on an output signal from the detection means, so as to prevent the car from stopping for more than a predetermined period of time. It is something.

[Effect]

In this invention, since the car is started to run after detecting that the car has stopped for a predetermined period of time, the concentrated load acting on a part of the outer circumferential surface of the rolling rollers is alleviated, and It becomes possible to restore the deformation of the outer circumferential surface of the rolling roller to its original arcuate shape due to running.

〔Example〕

FIGS. 1 and 2 show an embodiment of the present invention, in which (3) is a call detection circuit that detects the presence of a call;
9) Bottom floor stop detection circuit that detects that Hakato (1) is on the lowest floor, top floor stop detection circuit that detects that αQ Hakato (1) is on the top floor, (9) Hakato (1) A time limit circuit that counts the elapsed time from the time when the car (1) stopped, that is, the stop time of the car (1), and issues a command when a predetermined time has elapsed; 4 is an R-8 flip-flop (hereinafter referred to as memory); ash, α4. ■) is NOT gate, α6)l
f17) t(13) is an AND gate, α is an upward operation circuit, (company) is a downward operation circuit, H#iN OR gate, country, 俤) is an OR gate.

In the elevator system configured as described above, when the heel (1) of the elevator runs in response to a call and stops, the output of the call detection circuit (3) becomes 1L' and N.
The output of the OT gate αB) becomes 1H#, the time limit circuit α operates, and after a predetermined time elapses, it outputs a 1H' signal.
The memory (old) is set. In this state, if the toe (1) is on the lowest floor, the lowest floor detection circuit (9) is activated and outputs 1H', and the AND gate (to) is activated. The output of is %
HI and Nasi, the ascending operation circuit α is activated, and the car (1)
drives up. Similarly, if the car (1) is on the top floor with the memo IJ (12) set, the top floor detection circuit operates and outputs 1H', and the AND game (17) is activated. The output becomes 1H#, and the descending operation circuit (
A) is activated, and the car (1) is operated downward.

Similarly, when the memory (inhibition) is set,
) is neither on the bottom floor nor on the top floor, but on an intermediate floor, the output of the bottom floor detection circuit (9) is 1L', and the output of the top floor detection circuit (9) is also 'L'. , each signal becomes a 1H' output at the NOT gate (4), ■),
The output of the AND gate (13) becomes 'H', the descending operation circuit (a) is activated, and the car (1) is operated downward.

Does the rising operation circuit C19) operate and output 1H'?
Alternatively, when the descending operation circuit (a) operates and the output becomes 1H', the car (1) is operated and at the same time the NOR gate (2
The output of 1) is 1L', and if no call has occurred, the output of the call detection circuit (3) is 1L', and the output of the OR gates is 1L#, which sets the memory (2). Retain state.

In addition, when the operation of the ascending operation circuit (A) stops and the output becomes 1L', or when the operation of the descending operation circuit (A) stops and becomes the output 'L', the output of the NOR gate Ill becomes 1H', and the call detection circuit Regardless of the output of (3), the output of OR game) H becomes % a I, resets the memory (inhibition), sets the output from memory (old) to % L JF, and returns the output to basket (1).
remains stopped.

Also, when a call for the car (1) occurs, the call detection circuit (3)
When the output of OR gate 4 becomes 1H', the output of OR gate 4 becomes 1H'
Then, reset the memory (W), set the output from the memory (support) to 1L', and stop the operation below the memory (to).
In response to the call, Kato (1) is made to run.

When the ascending operation circuit 0 is activated and the output becomes 1H', or when the descending operation circuit is activated and the output is 'H', the car (1) is operated and at the same time the output of the OR gate 'H', and by resetting the time limit circuit αυ, the count of the time during which the car (1) is stopped is initialized. Also, there is a call for car (1), and the call detection circuit (
When 3) is activated, be sure to reset the time limit circuit 0υ.

By the way, as shown in FIG. 2, if the horizontal axis is the stop time of the heel (1) and the vertical axis is the amount of radial deformation of the rubber portion of the rolling roller, then the amount of deformation of the rolling roller (4) is: As the stop time increases, the deformation increases as shown by the quadratic curve, and the greater the amount of deformation, the greater the vibration transmitted to the car (1) when the car (1) is running.

Therefore, for the predetermined time T1 shown in FIG. 2, the radial deformation of the rolling roller (4) reaches a certain amount of deformation before reaching an almost constant value. By automatically raising or lowering the car (1) when the car (1) is not loaded, the load is maintained at one point on the outer circumferential surface of the rolling roller (4) that supports the unbalanced load acting on the car (1) for a long time. ,
By removing the load while the amount of deformation on the outer circumferential surface of the pawl rolling roller is small, it is easy to restore the deformation, and to prevent the rolling roller (4) from shifting due to the running of the car (1). In addition, it promotes restoration of the deformed part.

However, as shown in the conventional example, when the heel (1) is stopped, the cam (5) and the stopping roller (6) are configured so as not to apply a load to the rolling roller (4), and they are connected to the heel (1).
) and mechanical for mounting on the guide rail (3).
This eliminates the need for any additional members, making it possible to provide an elevator that is inexpensive and provides a comfortable ride.

In the above embodiment, the circuit configuration is such that when the memory (2) is set and the memory (1) is not on the bottom floor or the top floor but on an intermediate floor, a descending operation is performed. but,
It is also possible to perform upward operation.

FIG. 5 shows another embodiment of the present invention.
The same reference numerals as in the figure indicate the same or equivalent parts, and examples are (1)
After the car has stopped for a predetermined period of time, a running pattern is determined in advance, and in order to make the car (1) run according to that pattern, a command is issued to the up driving circuit and the down driving circuit, and the time limit circuit 0η is initialized. This is a driving pattern generation circuit that issues commands to

That is, the amount of deformation of the outer circumferential surface of the rolling roller (4) when the car (1) is stopped for a predetermined period of time varies depending on the load of the car (1) and the like. The distance required to restore this amount of deformation to a level that does not reach the level of photographing (1) differs, and the number of floors at which the car (1) stops also differs depending on the building in which it is installed. , the ninth running pattern that ensures the above-mentioned required running distance is generated by the running pattern generation circuit, and the heel (1) is run according to the pattern.

After the car (1) has stopped for a predetermined period of time, the above procedure will be carried out.

However, if it stops before traveling again and stops on the same floor as the t floor, the rolling roller (4) will move at the same position on the outer circumferential surface of the rolling roller (4) if it does not slip. The load will be supported again by the rolling rollers (
4) Due to the severe usage conditions, the above-mentioned running pattern generation circuit causes the train to stop at a floor different from the floor at which it stopped immediately before running. Then, the period of vibration of (1) is 1 per rotation of rolling roller (4).
It is set as 1 times. Therefore, in a device equipped with a vibration meter for detecting this vibration (1), the vibration caused by the deformation of the rolling roller (4) is detected by the vibration meter, and its value is set to a predetermined value. The running of the heel (1) may be stopped when the value is below the value. Even with these two methods, the same effects as in the above embodiment can be expected.

〔Effect of the invention〕

As explained above, this invention allows the car to run when it has stopped for a predetermined period of time or longer, so that the deformation of the rolling rollers that support the unbalanced load of the car can be suppressed to a minimum, and at the same time The deformation can be restored by rolling the rolling roller. Therefore, it is possible to realize an elevator with good riding comfort using an inexpensive device that does not require any additional mechanical members.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram showing one embodiment of the present invention, Fig. 2 is a graph showing the relationship between the car stop time and the amount of radial deformation of the rolling rollers, and Fig. 3 is a circuit diagram showing another embodiment of the invention. FIG. 4 is a vertical cross-sectional view of a hoistway showing a general elevator system using rolling rollers, and FIG. 5 is a vertical cross-sectional view of a hoistway showing a conventional elevator system. (1)・Basket (3)・Threat guide rail (4
) Fighting/Rolling Roller (2)...Timed Circuit (To)...Upward Operation Circuit (A)...Downward Operation Circuit (Foundation)/Fist Traveling Pattern Generation CircuitIn addition, in each figure, the same reference numerals are the same or The corresponding portion shall be shown. 0

Claims (4)

[Claims] (1) A rolling roller having at least an outer circumferential surface formed of an elastic body is attached to the car, and the rolling roller is rolled along a guide rail to guide the raising and lowering of the car, An elevator system comprising: detection means for detecting that the car has stopped for a predetermined period; and running means for causing the car to travel based on an output signal from the detection means. (2) The elevator system according to claim 1, wherein the traveling means has a traveling pattern in which the car travels in a predetermined pattern. (3) A patent characterized in that the traveling means has means for causing the car to travel on a floor other than the floor on which it was stopped immediately after the car is driven by an output signal from the detection means. An elevator system according to claim 1. (4) The elevator system according to claim 1, wherein the traveling means includes means for causing the car to travel until the output from the car vibration detector becomes equal to or less than a predetermined vibration value.