JPS6330275B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a braking device constituting an auxiliary brake for a passenger conveyor.

A braking device for a passenger conveyor such as an escalator or an electric road is usually provided integrally with a drive device including a drive motor, a speed reducer, and the like.

For this reason, in escalators and the like that are driven at the upper end, if the left and right step links below the drive device break, there is not only a risk that the steps will flow into the lower machine room, but also the drive If the left and right drive chains of the device or the shafts of the chain gears break, it becomes impossible to stop the movement of the running step, and there is a problem in that it also poses a problem when repairing the step.

In view of the above points, the present invention includes a chain gear driven by a step link, a brake shaft driven by the rotation of the chain gear, and a clamp that clamps the brake plate provided on the brake shaft so as to be removable. A braking device for a passenger conveyor which solves the above-mentioned conventional problems by installing a braking device consisting of a member and a release mechanism for biasing this clamping member to a released position at a lower position in the extending direction of the steps of the passenger conveyor. This is what we are trying to provide.

The invention will now be described with reference to illustrated embodiments.
In FIG. 1, 1 is an upper-end drive type passenger conveyor, 2 is an endless handrail, 3 is a step link that is hung endlessly below the handrail, and 4
5 is a drive device disposed at the upper end of the passenger conveyor 1 and engaged with the step link 3 via a drive chain (not shown); 5 is a braking device disposed at the lower end of the passenger conveyor 1; Similarly, chain 12 is attached to step link 3 (see Figure 2).
It is connected through.

Next, the above-mentioned braking device 5 will be explained in detail based on FIGS. 2 and 3. 6 is a base, 7 is a shaft 8
A chain gear 9 is fixed to both ends of the base 6 and rotatably attached to the base 6, and a chain gear 9 is connected to the base 6 and the main frame at a predetermined distance from the chain gears 7, 7 in the running direction of the step link 3. 10 is a chain gear rotatably disposed via a bearing member 11; 12 is this chain gear 9 and the chain gear 7;
The step link 3 and the chain gear 7 are engaged with each other through a chain wound between the chain and the chain gear 7.

13 is a pulley fixed to the center of the shaft 8, and 14 is a base 6 between the chain gears 7 and 9.
At the top, a brake shaft is arranged parallel to the shaft 8 and is rotatably attached, 15 is a pulley fixed to this brake shaft, and 16 is a belt wrapped around this pulley 15 and the above pulley 13. , 17 is a brake plate fixed to the brake shaft 14, 18 is a scissor-shaped clamping member whose right end supported on the base 6 engages with the brake plate 17 so as to be movable toward and away from the brake plate 17, and 19 is this clamping member. 18 is a lining attached to the friction surface with the brake plate 17, and 20 is a spring elastically loaded between the inner left end portions of the clamping member 18 in a direction that constantly pulls the left end apart, that is, in the clamping direction at the right end. It is energizing. Reference numeral 21 denotes a release mechanism for moving the right end of the clamping member 18 to open and separate from the brake plate 17 against the biasing force of the spring 20, and is disposed at the center of one side of the clamping member 18. The brake release action can be operated by either a mechanical or electrical release mechanism. That is, when adopting a mechanically operated configuration, it is sufficient to use a bolt for the shaft member 21a of the release mechanism 21 and a nut for the receiving member 21b arranged at the extended end of the shaft member 21a for manual operation. , and when adopting an electrically operated configuration, the receiving member 21
b may be used to attract the shaft member 21a using an electromagnet. In any case, since these are not the essence of the present invention, they may be selected as appropriate.

The device of this embodiment configured as described above has two chain gears 7 and 9 disposed in the advancing direction of the step link 3, which are connected by a chain 12, and which is connected to the step link 3 through the chain 12. Link 3
When the brake plate 17 is braked by the biasing force of the spring 20, the pulley 15 and the belt 1
6 and the pulley 13, the step link 3 can be locked by the entire engaging portion. Also,
In the present embodiment, when the brake plate 17 is released by the operation of the release machine 21, all the rotating members follow the running of the step link, so there is no burden on them, and compared to the brake mechanism in the drive device 4 installed together. It can be said that its durability and reliability are extremely high. Furthermore, since the device of this embodiment is installed at the lower end of the passenger conveyor 1, it is possible to deal with all of the above-mentioned problems such as the broken step link flowing down.

In the above embodiment, the two chain gears 7 and 9 are arranged in the direction of movement of the step link 3 and are connected by the chain 12, but the chain gear is a single chain gear and its outer periphery is A similar effect can be obtained by using a structure in which a chain or a chain roller is provided. Further, in the above embodiment, a disc brake is used as the braking device, but the brake device is not limited to this. For example, the brake plate 17 may be replaced with a brake body, and braking force may be applied to this via a belt. That is clear.

As described above, according to the present invention, by arranging the driven mechanism having only a braking function at the lower end of the passenger conveyor, it is possible to obtain a braking device for a passenger conveyor with significantly improved durability and reliability.

[Brief explanation of the drawing]

Figure 1 is a side view showing one embodiment of the present invention, Figure 2 is a side view showing one embodiment of the present invention;
The drawing is an enlarged side view of the braking device, and FIG. 3 is a plan view of the braking device shown in FIG. 1...passenger conveyor, 3...step link, 7,
9...Chain gear, 8...Shaft, 12...Chain, 1
4... Brake shaft, 17... Brake plate, 18...
...Holding member, 20...Spring, 21...Release mechanism.

Claims (1)

[Claims] 1. In a braking device for a passenger conveyor, which is equipped with a braking device that engages with an endless step link at a lower position in the extending direction of the steps, the braking device is connected to a chain gear and a brake wheel that follow the step link, and to this brake wheel. A braking device for a passenger conveyor, comprising a release mechanism that provides power.