JPS5974869A - Brake gear - 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 The present invention relates to a brake device that detects an abnormality r from the operating state of the brake.

Is the brake a moving object? The brake must be equipped with a mechanism that can be used to stop the moving bar in an emergency and prevent a C'C accident.For this reason, conventionally, brakes have been regularly inspected. 1 has maintained its function.

However, considering the importance of brakes as a safety device, it has been desired to be able to immediately detect abnormal brake noises based on the whirling motion of a moving object. In particular, an escalator has kIj stages connected in an endless manner and stops naturally due to the running resistance of the device itself, even without the braking force of a brake.

For this reason, abnormalities in the brakes are difficult to detect from daily operating conditions, and there is a problem in that the brakes cannot be stopped in an emergency, which can easily lead to a serious accident.

This invention has the above-mentioned drawbacks [&] When the general brake is activated to completely brake the moving body, a clock means that activates a signal when the reference time required for the moving body to normally stop has elapsed. and.

A stop detecting means is provided which detects that the moving body has stopped and sends out a signal, and the transmitting means is actuated by the signal from the clock means and the signal from the stop detecting means. The purpose of this system is to detect the operation of the brakes each time a moving object comes to a stop, and to stop the vehicle in an emergency to prevent accidents.

Fig. f1 and Fig. 2 show all the rows when this invention is applied to an escalator. +31U This snap ten i21 'f: Drive sprocket.

+41 Fi tribe chain (5) 2 drive sprocket (3) full drive Otsu reducer, (6) this reducer (4
2 is an electric motor that does not move through the shaft (7), and (8) is the motor that does not move through the shaft (7).
) is attached to the brake coil (8
Axis (7) when a) is deenergized? When the brake coil (8aJ) is energized, the brake on the shaft (7) is released.JS.

T is electric motor (6) and brake coil (8aJ)
The three-phase power supply (+), (-J is the control power supply, 00) is a stop switch connected to the control power supply (00) at one end.

Is it closed all the time, and then the escalator is opened and the escalator is ordered to stop? It is something to put out. One end of the till is connected to the other end of the stop switch + IQ + and the safety device a of each building is
A representative safety switch that is normally closed and
It is released once the safety device is activated.

U21 is always open, and when escalator (1) is operated in the upward direction, the escalator (1) is pressed down to close. The normally open contact of the electric motor i61k (13a), (13bJU each raising operation contactor) that rotates in the upward direction, the electric motor a (6) and the brake coil (8a) fz power supply box, (13cJ is the rising operation contact ?1 (n-open contact of 131, (1
3d) and (13e) ri respectively are the normally closed contact and the normally closed contact of ri (normally closed contact of 13I). The lowering operation button (port 5) to be operated is energized by the closing of this lowering operation button 41, and the electric motor (6) is activated.
) Descending operation contact tW* (15a
J, (15b) Its each down-run contact WLI5
1 is a normally open contact, which connects the electric motor (6) and brake coil (8a) to the full power electric wire box, S, by reversing the phase 2. (15c) is N! connected in parallel to the down drive button circle. Driving contact 8! ! Normally open contact of mouth 5; (15
d) and (15e) are the normally closed contact and normally open contact of the descending contact al151, respectively. In addition, the rising operation contactor u3
One end of I is connected to the other end of the safety switch uD through a parallel circuit consisting of a normally closed contact (15d), a raise operation button 0shi, and a normally open contact (layer 13a), and one end of the lower operation contactor t15+ is connected to the The safety switch (1
11.

(161 is a disc that is attached to the end of the shaft (7) and has a sawtooth shape with the 0th circumference cut off at the 3-way interval. (161) +1'71 is a pulse generating means that outputs a low level signal (hereinafter referred to as signal) when the 9AIi interval of pulses from 16aJ is less than the PJr fixed value, and The stop detection means (u8) which outputs the full output of No. 16 (hereinafter referred to as signal H) at high level when the occurrence interval of F/i is equal to or greater than the F/i increment value is the normally open contact (
13e) and Ryuun contact V! Normally open contact (15j)
eJ is an O switch connected to the input terminal, respectively, and when at least one of the normally open contacts (13e) (15eJ) is closed and No. 4g H is input, a signal H is output. is connected to the output terminal of the 014 element [18+], and as soon as the output of the 014 element becomes a signal, it outputs the signal H.

The load detection means (16
A reference signal corresponding to the load is output based on the signal a). 4211 is connected to the output terminals of the stop detection means (1η and the clock means port □□□, respectively, and when both of them are on the signal, it outputs the signal ■(1 and 0), and this No. When the output of the element f21+ is set, the memory means consisting of the slip 70 knob element connected to the PJOFL element continues to output a high signal to the output terminal Q when the signal H is output from the PJOFL element hit i'L*. , the reset button connected to the reset terminal (
It is reset by pressing down on the signal 1 (support) and converts it to the signal 1 (all signals).

-1 is connected to the output terminal Q of the storage means - and is energized when the storage means 22 is outputting the signal (11); A closed contact, one end of which is connected to the other ends of the up-run contactor (13) and the down-run contactor (15j), and the other end is connected to the control contactor (15j).
&1 power supply (connected to the power supply).

To explain based on the operation t23a of the brake device configured as above, first, since the escalator (stop detection means + 17 when stopped) outputs the signal H2, the NOR element D outputs the signal. continues to be output, and the output of the storage means is also signaled, so that the dust generating means is deenergized.

Next, if you want to raise the S-K mountain gold, press the raising operation button u,! Press J to close it, and the rising contactor (13
1 is (+no (10: 111 1J2I
(15dJ DI (24a)
(The left open contact is added in the → circuit (13c
) Ofcourse (7 and self-improvement, and regular PI contact (13aJ
, (energize the L switch, the brake coil (6) and the brake coil (8a) to close the switch 13).

At the same time as turning on the brake (81), the electric motor (6) is rotated in the upward direction to connect the shaft (7), reducer (4), tribe chain (5) and drive sprocket f3+k to the entire Stella 1 chain (2). At this time, the normally open contact (1
3e) If it is closed, it will be closed, so OR
The time to-''C signal H*L of FIG. 3(a) is applied to the element U&.
lj and input it to 0 clock 10 step U (branch). Clock means 11
9j ri Immediately outputs signal ti.

Electric 1m 16] rlL starts with a slight delay, and pulses from the pulse generating means (16a) ηS are input to the stop detecting means (17), and the signal changes from H to signal R at time t1.

NOOR child (21+ is the clock means (signal from 19i)
Outputs the rainbow signal Li.

Therefore, the signal Lf continues to be output to the storage means (c) and the signal fl4 continues to be sent to the transmitting means a.

Next, if you want to stop the escalator that is continuing to rise, press the stop switch t101i to issue a stop command. Promotional luck 11 yen contact/j! It device t131 is deenergized and the normally open contacts (13a), (131)), (13c),
(13e) ', normally open contact (13d7
Close. At this point, electric I-hi (6) is de-energized,
Brake (8) Kadosaku (7) Escalator (1)
)? Brake. OR to open the door open contact (13e)
The output of element +lal becomes a signal at time t2 in FIG. 3(a).

The clock means 119) changes to @ at time t4, which is a reference time Ts seconds after time t2. On the other hand, the escalator (1) stops at the previous time t3 even at the normal time t4jfi, and the stop E detection means 1i71 outputs the signal ((). The output of means]2 also remains as a signal.

However, when the braking force of the brake (8) is weak.

As shown in FIG. 3(b), when the output of the clock means a9) changes from the signal H to the signal at time t4, the escalator is still moving and the stop detection means fig.
The signal remains on the output. At 9:00 t5, the escalator ill stopped. The output of the stop detection means 1274 becomes signal 11 for the first time. In this case, from 0 time t4 to 15 points, 1 ￥ stop + kw means (lη and the output of clock means (19) [1 and tl are also number 13, so NO
), the output of element 1211 becomes signal f(.This signal I
When the storage means 2 is connected to I, the signal H is output to the output terminal Q. Output terminal (2
The transmitting means is energized by the signal L1, and its normally closed contact (24a) is opened. Even if the rising operation button 1121 is pressed 7' for 0 body due to the human race, the rising operation contactor +13
Since 1ri is not energized, is it an escalator mountain? Start σ and lick. After adjusting the braking force of the brake (81), press the reset button (c)'fr knee 7W.At this time, press N.
Since the signal L2 is outputted to the terminal t21), the memory means is reset by pressing the reset button, and the signal L2 is output.

Since one example of the transmitting means is deenergized and its normally closed contact (24a) is closed, the escalator (1) can be restarted by pressing the ascending operation button a21'2 thereafter.

Next, when descending the escalator (1), press the descending operation button a to energize the descending & contactor (?51), and close the normally open contacts (15aJ, (15bJ) to the electric motor 16). The following is the same as in the case of upward operation, and the explanation will be omitted.

By the way, in the above explanation, when the moving body stops, the Ig H2
However, when the stop t@ of the moving object is detected, the instantaneous signal H1 is output. When this signal is output, the reference time Ta has elapsed, and the clock means outputs the signal. The intended purpose can also be achieved by activating the transmitting means under all conditions in which the signal is output.

Furthermore, in the above description, the case where the invention is used as a brake for an escalator has been described, but it can also be used for other brakes.

What about the brakes that I mentioned above about this invention? When the movable body is moved and the movable bar is braked, there is a clock means that activates a signal when the reference time required for 3'Ik has elapsed until the movable body normally stops, and a clock means that detects that the movable body has stopped. The stop detecting means for emitting a signal is provided, and the transmitting means is fully activated by the signal from the clock means and the signal from the stop detecting means.

In daily driving operations, the brake r/F: Dynamic? This has the effect that the movable body can be stopped within the reference time and an accident can be prevented even during an emergency stop.

[Brief explanation of drawings]

Are Figures 1 and 2 this invention? One implementation 1+ when applied to the escalator! , It is an electric circuit connection diagram shown. FIG. 3 is an explanation of the operation. Circulation, +11 [escalator, (2) is a step chain (moving body, f71ri axis, (8) is a brake, 0
6j is a pulse generation means, (17) is a stop detection means,
The case where there is no clock means in l191 is a transmitting means. Note that the same reference numerals in Figure 1 indicate the same parts, or rc indicates corresponding parts. Agent Shin Kuzuno - Figure 2 Figure 3

Claims (4)

[Claims] (1) A brake that operates based on a stop command to brake the moving object to a stop; a stop detection means that detects that the moving object has stopped and issues a signal; The brake device is provided with a clock means that activates a signal when a reference time required for stopping has elapsed, and a transmitting means that operates in response to the signal of the second clock means and the signal of the stop detection means. (2) Is the stop detection means a moving object? Rotation of the driving shaft? 2. The brake device according to claim 1, wherein the brake device converts the pulse signal into a pulse signal by the pulse generating means, and detects a stop when the pulse interval of the pulse signal exceeds a predetermined value. (3) The brake device according to claim 1, wherein the transmitting means is operated by a non-stop signal from the stop detecting means and a signal from the clock means. (4) The stop detection means shall emit an instantaneous signal r when the movable body stops, and the transmitting means shall operate by combining the instantaneous signal of the stop detection means and the signal of the clock means. Claims WfJ Paragraph 1 i
Brake device on cE.