JPH02182693A - Braking device of passenger conveyor - Google Patents

Abstract

PURPOSE:To reduce the difference in braking stop distance between the ascending and descending operations of a passenger conveyor and brake and stop the passenger conveyor with a safety stop distance in the both ascending and descending operations by providing a first brake capable of braking in the both ascending and descending operations and a second brake capable of braking only in the descending operation. CONSTITUTION:In the ascending operation, only a first brake 5 is made to conduct brake operation by a stop command, and in the descending operation, the first brake 5 and a second brake 6 are made to conduct brake operation. Hence, the difference in stop distance by braking between the ascending and descending operations can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a braking device for a passenger conveyor, and particularly to improving safety when braking a passenger conveyor installed at an angle.

[Conventional technology]

FIGS. 6 to 8 show a conventional passenger conveyor system as disclosed, for example, in Japanese Patent Publication No. 63-30275.

In the figure, (1) is the main frame, and (2) is a tread chain that is arranged endlessly on the main frame (1) and has an outgoing path on the top side of the main frame (1, 1) and a return path on the bottom side. is provided with a rack (2a). (31 is a number of treads connected to the tread chain (2) and arranged in succession, and (4) is a rack provided in the longitudinal middle of the main frame (1). The first drive machine forms an endless track belt-like treadle [(
Rack (2a
) is provided with a drive chain (4a) that meshes with the drive chain (4a). (4'
) is a second drive machine similar to the first body machine +41, which is placed apart from the first drive machine (4), and is provided with a brake device (5) in addition to the drive chain (4a). (5a) is a brake device (5) that is driven via the drive shaft of the drive chain (4a).
), (sb) is a compressed coil spring (5
C) According to K, the brake disc (5a) f is a clamping body that clamps from both sides, (5d) is a clamping body (5b) that resists the compression coil spring (5C) when it is energized, and f: Releases. It is an electromagnet.

A conventional passenger conveyor is constructed as described above and has a first . At the same time when the second drive machine +41 (4') is energized, the electromagnet (
5d) is energized and the brake device (5) is released.

The drive chain (4a) then drives the treadle chain (2a) to transport the passenger on the treadle (3). Although not shown, the passenger conveyor is provided with a safety device that is activated when, for example, an infant gets caught between the skirt guard and the side surface of the footboard.

When such a safety device operates, K becomes the first. The second drive unit (heater (4')) and the electromagnet (5d) are deenergized.This causes the brake device (5) to fully brake and the treadle (
31 is braked and stopped.

[Problem to be solved by the invention]

In the conventional passenger conveyor as mentioned above, a brake device (5
1's braking ability remains constant, and the driving direction increases.

Braking is applied in the same way regardless of whether the vehicle is descending. However, when the passenger conveyor is braked during upward operation, the passenger load acts as a braking force. For this reason.

When the passenger conveyor is braked during descending operation, the braking force of the brake system (51) is set so that the stopping distance is approximately safe.
When there are many passengers on the vehicle, excessive braking force is applied. Therefore, when braking during ascending operation, the stopping distance is shortened to 0.
There was a problem in that it gave a large impact to passengers and caused them to fall.

The present invention was made to solve this problem, and an object of the present invention is to provide a braking device for a passenger conveyor that has a small difference in stopping distance during braking during ascending operation and descending operation.

Means for Solving CaU] In the braking device for a passenger conveyor according to the present invention, the first brake can be braked both during ascending operation and descending operation.
A brake, a second brake that can be braked only during descending operation, and a control device that applies braking to only the first brake during ascending operation in response to a stop command, and operates the first brake and the second brake in a crawling manner during descending operation. It will be done.

[Effect]

The first part of the brake system for the passenger conveyor that was realized as described above.
By appropriately setting the braking capabilities of the brake and the second brake, it is possible to reduce the difference between the stopping distance due to braking during upward driving and the stopping distance due to braking during descending driving.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

In the figure, the same symbols as in Figures 6 to 8 indicate corresponding parts, and (5
) is the first brake provided on the second drive machine (4'),
Like the brake device +51 in FIGS. 7 and 8, it is assembled and provided with a brake disk and a clamping body. (6
1 is a second brake provided on the first drive machine (4),
(6a) is a shaft braked by the first driver (4);
(6b) There are eight claws (6C) rotatably supported on the Fi axis (6a). (6d) is the axis (6a
) rotates with the 1s that pinches the eight (6b) from both sides.
Rubbing board.

(6e) is a blocking piece whose middle part is pivotally supported by the first drive unit (41) and one end is placed facing the claw (6C); (6f) is on the opposite side of the blocking piece (6e) to the main (6b) side. A spring (6g) is provided to urge the blocking piece (6e) in the direction of locking it to the claw (6C), and when it is biased, the spring (6g) resists the spring (6f) and pushes the blocking piece (6e) to the k claw (6C). ), the electromagnet (7) is eight (6b) and a blocking piece (6e).
It is mainly composed of.

A one-way operation in which the passenger conveyor is sequentially rotated downward and the rotation of the eight (6C) is prevented by engagement of the claw (6c) and the blocking piece (6e) with respect to the rotation shaft of the eight (6b). Machine picking.

(8) is a normally open contact of the stop command means, and (9) is an upward operation detection means that outputs an output when the passenger conveyor is in upward operation.

aG is a descending operation detection means that outputs an output when the passenger conveyor is in descending operation, αυ is an OR gate, α2 is an AND gate,
a3 is also a control device consisting of an AND gate, (141 is a first braking command, α is a second braking command, σe is an upward operation detection means (9), a downward operation detection means aG, etc.).

In the passenger conveyor braking device configured as described above, when two passenger conveyors are in ascending operation, the stop command means (
Suppose that the command is issued from 8).

Since the upward operation detection means +911d output is emitted, it is OR.
Gate α11 generates an output, and AND gate a'a generates an output. As a result, the first control command α4 is issued, the magnet (5d) of the first brake (51) is deenergized, and the passenger conveyor is braked only by the first brake (51). Suppose that a command is issued from the stop command means (81).

Since the descending operation detection means αG is outputting, the OR gate t1υ and AND gate r12 output, and the first brake (5) performs a braking operation via the first braking command a41'ft.

-Also, AND game) (13 also generates an output, the second braking command r19 is issued, and the electromagnet (6) of the second brake (6)
g) The AE is deenergized and the second brake fi+ performs a braking operation. Therefore, when a stop command is issued while the passenger conveyor is descending, the passenger conveyor is braked by the first brake +51 and the second brake (6). Therefore, by appropriately setting the braking capacity of each of the first brake (5) and the second brake (6), it is possible to reduce the difference in braking stop distance during upward driving and during downward driving. The passenger conveyor can be stopped at a safe stopping distance during both ascending and descending operations, thereby preventing a single passenger from receiving a large impact or causing him or her to fall, thereby improving safety.

In addition, in the event of a power outage, the electromagnet (sd) of the first brake (5)
.

Both the electromagnet (6g) of the second brake (6) are deenergized, but since the second brake (61) is equipped with a one-way operating mechanism (7), the second brake No braking force is generated at +61 K. Therefore, it is possible to prevent problems caused by excessive braking force in the event of a power outage during ascending operation.

〔Effect of the invention〕

As explained above, the present invention provides a first brake that can be braked both when the passenger conveyor is running up and down, and a second brake that can be braked only when it is running down.
In response to a stop command, only the first brake is operated during upward operation, the first brake and the second brake are operated during downward operation, and the first brake is operated when stopped during upward operation.
It is designed so that only the brake can be used for braking.

As a result, the braking force of the first brake and the second brake can be set appropriately to reduce the difference in braking stopping distance during continuous upward rotation and downward operation, and to maintain a safe stopping distance during both upward and downward operation. Effect of braking and stopping 'fr: Obtained.

[Brief explanation of the drawing]

FIG. 1 is a conceptual side view of a passenger conveyor showing an embodiment of a braking device for a passenger conveyor according to the present invention. 2 is an enlarged view of the holder shown in FIG. 1, FIG. 3 is a conceptual plan view of FIG. 2, and FIG. 4 is a sectional view taken along the line ff-ff of FIG. 3. FIG. 5 is a logic circuit diagram corresponding to FIG. 1, FIG. 6 is a diagram corresponding to FIG. 1 explaining a conventional passenger conveyor braking device, and FIG. 7 is a diagram corresponding to FIG.
The figure is an enlarged view of the section ``■'' in FIG. 6, and FIG. 8 is a conceptual plan view of FIG. 1. (51...First brake, (5d)...Electromagnet, c6)...Second brake, (6g)...Electromagnet, (7)...One-way operation mechanism. 18+...stop command means, (9)...upward operation detection means, Qt...downward operation detection means, ae...control device Note that the same or equivalent parts in Figure 9 are indicated by the same reference numerals. Figure 1

Claims (1)

[Claims] A first brake is provided with an electromagnet and performs a braking operation when the electromagnet is deenergized, and a second brake is provided with a one-way operating mechanism and an electromagnet and performs a braking operation only in the downward direction when the electromagnet is deenergized. The electromagnet of the first brake is deenergized by the brake, the output of either the upward operation detection means or the downward operation detection means, and the output of the stop command means, and the output of the downward operation detection means and the output of the stop command means and a control device for deenergizing the electromagnet of the second brake.