CN209974085U

CN209974085U - Handrail area entry protection device

Info

Publication number: CN209974085U
Application number: CN201920435407.5U
Authority: CN
Inventors: 李跃平
Original assignee: Canny Elevator Co Ltd
Current assignee: Canny Elevator Co Ltd
Priority date: 2019-04-02
Filing date: 2019-04-02
Publication date: 2020-01-21
Anticipated expiration: 2029-04-02

Abstract

The utility model discloses a handrail area entry protection device relates to staircase part technical field, has solved the complicated, the easy dead or malfunctioning problem of card of current protection device structure, and it is including being fixed in the base member of handrail area entrance, it has the access hole that supplies the handrail area to advance/go out to run through on the base member, be equipped with piezoelectric rubber on the medial surface of base member access hole, it is gapped between piezoelectric rubber and the handrail area, piezoelectric rubber both sides electric connection respectively has the output A, B that is used for output voltage signal, and output A, B connects in the safety circuit that is used for controlling the staircase and stops. The effect of preventing that personnel's finger from being dragged into in the handrail area discrepancy hole by the handrail area and causing the extrusion has been reached, the dead risk of reduction card.

Description

Handrail area entry protection device

Technical Field

The utility model relates to an staircase part technical field, in particular to handrail area entry protection device.

Background

The hand strap of the escalator or the sidewalk is a moving part, the upper end and the lower end of the hand strap are respectively provided with an access hole, and the moving hand strap enters and exits from the access holes at the ends. Normally, passengers on the escalator cannot contact the handrail belt access hole, but a child may fall to the end to hold the handrail belt tightly, and accidentally drag hands or fingers into the access hole, so that the risk of serious injury is caused. The existing access hole protection device generally comprises a movable shell, the shell is sleeved on the periphery of a handrail belt, a gap between the shell and the handrail belt is 3-4 mm, if fingers are clamped in the gap, the shell is driven to move to knock down an access hole protection switch arranged behind the shell, and the escalator stops running. The existing protection device has the defects of complex structure and easy blockage or failure.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a handrail area entry protection device prevents that personnel from pointing to be dragged into in the handrail area discrepancy hole by the handrail area and causing the extrusion, reduces the dead risk of card.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a handrail area entry protection device, is including being fixed in the base member of handrail area entrance, it has the access hole that supplies the handrail area to advance/go out to run through on the base member, be equipped with piezoelectric rubber on the medial surface of base member access hole, it is gapped between piezoelectric rubber and the handrail area, piezoelectric rubber both sides electric connection has output A, B respectively, and output A, B's output voltage signal is connected in safety relay after handling, and safety relay's output Y1 and Y2 both ends are established ties and are gone into in the safety circuit that is used for controlling the staircase and stops.

Further, the gap between the piezoelectric rubber and the handrail belt is 3 ~ 4 mm.

Furthermore, a guide rail is connected in the access hole, and the handrail belt is sleeved outside the guide rail and slides along the guide rail.

Furthermore, the upper side surface of the guide rail is attached to the inner side surface of the base body access hole.

Furthermore, the piezoelectric rubber is positioned on two sides of the joint surface of the guide rail and the access hole.

Furthermore, the output end A, B of the piezoelectric rubber is respectively connected to the input circuit and the MCU microprocessor in sequence and then connected to the same safety relay, and the two ends of the output Y1 and the two ends of the output Y2 of the safety relay are connected to the safety circuit of the escalator in series; the safety relay is controlled by the two MCU microprocessors independently, and a power supply A and a power supply B are connected between the safety relay and the two MCU microprocessors respectively.

Furthermore, the input loop comprises a signal amplification module, a filtering module and a photoelectric isolation module in sequence along the voltage signal input direction.

Furthermore, the two MCU microprocessors communicate with each other to perform mutual monitoring.

Furthermore, the piezoelectric rubber is provided with four blocks which are respectively positioned at the upper inlet and the lower inlet of the two hand straps, the same MCU microprocessor is connected with 4 input loops, and the 4 input loops are respectively connected with the corresponding 4 piezoelectric rubbers.

To sum up, the utility model discloses following beneficial effect has:

1. child falls to carelessly at the tip of staircase, and when the hand or the finger of holding the handrail area was dragged into in the clearance of handrail area and piezoelectricity rubber, piezoelectricity rubber surface received the pressure of pressing from both sides finger in the clearance to produce voltage signal at A, B both ends, make staircase stop operation through circuit control, this simple structure, preparation convenience also do not have the dead risk of card, have improved the staircase operation and have been the security.

2. The device can be arranged at the original access hole protection device, only the original access hole is slightly modified by opening holes, and then the piezoelectric rubber is arranged, so that the original function of the original protection device can be reserved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic circuit diagram of the connection in the present invention.

In the figure, 1, a substrate; 2. a piezoelectric rubber; 3. a handrail belt; 4. a guide rail.

Detailed Description

The following description will be further described with reference to the accompanying drawings, which are not intended to limit the present invention.

A handrail belt entrance protection device, as shown in figure 1, includes a base body 1 fixed at the entrance of a handrail belt 3, an entrance hole for the entrance/exit of the handrail belt 3 is penetrated on the base body 1, a piezoelectric rubber 2 is fixed on the inner side surface of the entrance hole of the base body 1 in a fitting manner, a gap is formed between the piezoelectric rubber 2 and the handrail belt 3, and in this embodiment, the gap between the piezoelectric rubber 2 and the handrail belt 3 is 3 mm.

As shown in fig. 1, a guide rail 4 for guiding the handrail belt 3 to slide is connected in the access hole, and the handrail belt 3 is sleeved outside the guide rail 4 and slides along the guide rail 4; the upper side surface of the guide rail 4 is attached to the inner side surface of the access hole of the base body 1, the piezoelectric rubber 2 is positioned on two sides of the attachment surface of the guide rail 4 and the access hole, and the piezoelectric rubber 2 and the guide rail 4 cover the whole inner side surface of the access hole of the base body 1.

As shown in fig. 1, two sides of the piezoelectric rubber 2 are respectively and electrically connected with an output end A, B, an output voltage signal of the output end A, B is processed and then connected to a safety relay, two ends of an output Y1 and a two ends of an output Y2 of the safety relay are connected in series to a safety loop for controlling the escalator to stop, and the escalator stops running when a fault occurs.

As shown in fig. 2, the output end A, B of the piezoelectric rubber 2 is connected to the same safety relay after being sequentially connected to the input circuit and the MCU microprocessor, and the two ends of the output Y1 and Y2 of the safety relay are connected in series to the safety circuit of the escalator; the safety relay is independently controlled by the two MCU microprocessors, and a power supply A and a power supply B are connected between the safety relay and the two MCU microprocessors respectively. Wherein, the two MCU microprocessors communicate with each other to carry out mutual monitoring.

As shown in fig. 2, the input loop sequentially includes a signal amplification module, a filtering module, and a photoelectric isolation module along the voltage signal input direction; the signal that MCU microprocessor output drives safety relay after enlargiing through output amplifier module to give microprocessor by safety relay feedback signal, through this feedback signal, by the operating condition of microprocessor real-time detection safety relay. The signal input loop (the signal amplification module, the filtering module and the photoelectric isolation module), the MCU microprocessor, the output amplification module and the power supply respectively work independently in two ways, but are communicated with each other to ensure that the two ways work normally.

As shown in fig. 2, four pieces of piezoelectric rubber 2 are provided, which are respectively located at the upper and lower inlets of two handrail belts 3, and 4 input loops are connected to the same MCU microprocessor, and the 4 input loops are respectively connected to the corresponding 4 pieces of piezoelectric rubber 2. In this embodiment, the output ends A, B of the piezoelectric rubber 2 with four access holes are respectively connected to four sets of inputs (a 1, B1), (a 2, B2), (A3, B3), (a 4, B4).

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and those skilled in the art can make various modifications or equivalent substitutions within the spirit and scope of the present invention, and such modifications or equivalent substitutions should also be considered as falling within the scope of the present invention.

Claims

1. A handrail area entry protection device which characterized in that: including being fixed in base member (1) of handrail area (3) entrance, run through the access hole that supplies handrail area (3) to advance/go out on base member (1), be equipped with piezoelectric rubber (2) on the inboard face of base member (1) access hole, gapped between piezoelectric rubber (2) and handrail area (3), piezoelectric rubber (2) both sides electric connection respectively has output A, B, and output A, B's output voltage signal is connected in safety relay after handling, and safety relay's output Y1 and Y2 both ends are established ties into in the safety circuit that is used for controlling the staircase and stops.

2. The handrail entry protection device of claim 1, wherein the gap between the piezoelectric rubber (2) and the handrail (3) is 3 ~ 4 mm.

3. The handrail entry protection device of claim 1, wherein: the base body (1) is connected with a guide rail (4) in the access hole, and the handrail belt (3) is sleeved outside the guide rail (4) and slides along the guide rail (4).

4. The handrail entry protection device of claim 3, wherein: the upper side surface of the guide rail (4) is attached to the inner side surface of the access hole of the base body (1).

5. The handrail entry protection device of claim 4, wherein: the piezoelectric rubber (2) is positioned on two sides of a binding surface of the guide rail (4) and the access hole.

6. The handrail entry protection device of claim 1, wherein: the output end A, B of the piezoelectric rubber (2) is respectively connected with the input circuit and the MCU microprocessor in sequence and then connected with the same safety relay; the safety relay is controlled by the two MCU microprocessors independently, and a power supply A and a power supply B are connected between the safety relay and the two MCU microprocessors respectively.

7. The handrail entry protection device of claim 6, wherein: the input loop sequentially comprises a signal amplification module, a filtering module and a photoelectric isolation module along the voltage signal input direction.

8. The handrail entry protection device of claim 7, wherein: the two MCU microprocessors are communicated with each other to supervise each other.

9. The handrail entry protection device of claim 6, wherein: the four pieces of piezoelectric rubber (2) are respectively positioned at the upper inlet and the lower inlet of the two hand straps (3), 4 input loops are connected to the same MCU microprocessor, and the 4 input loops are respectively connected with the corresponding 4 pieces of piezoelectric rubber (2).