CN219173986U

CN219173986U - Redundant type keeps away barrier protection's car

Info

Publication number: CN219173986U
Application number: CN202121140120.3U
Authority: CN
Inventors: 刘孝军
Original assignee: Liaoning Wangyue Elevator Technology Co ltd
Current assignee: Liaoning Wangyue Elevator Technology Co ltd
Priority date: 2021-05-26
Filing date: 2021-05-26
Publication date: 2023-06-13
Anticipated expiration: 2031-05-26

Abstract

The utility model discloses a redundant type obstacle avoidance protective car, which relates to the technical field of elevators. The utility model can effectively realize the collision protection of the barrier of the lift car in the vertical running space under the condition that the protection of the lift without the lift well surrounding wall is lost, and has the key point of pre-protection, and can realize the protection before the collision of the barrier and the lift car, thereby effectively reducing the accident rate. Meanwhile, the contact type barrier protection function and the non-contact type barrier protection function form redundancy protection, so that the reliability of the protection function is greatly improved.

Description

Redundant type keeps away barrier protection's car

Technical Field

The utility model relates to the technical field of elevators, in particular to a redundant type obstacle avoidance protective car.

Background

Among home elevators, hoistway-free elevators are increasingly used. The method is mainly used for avoiding obstacle safety protection of the bottom of the elevator car without a well at present, and a touch type safety touch plate is additionally arranged. The principle is that a safety touch plate capable of moving upwards is arranged at the bottom of a car, and a travel switch is arranged in a space range where the safety touch plate can move upwards. When the car runs downwards, if the safety touch plate touches an obstacle, the safety touch plate and the car body generate relative displacement, the distance between the safety touch plate and the car is reduced, so that the travel switch is touched by the safety touch plate, meanwhile, a signal of the travel switch is transmitted to the elevator control system, and the elevator control system controls the car to stop, so that the obstacle protection function is completed.

The obstacle avoidance protection function has the following defects:

1. when the car touches an obstacle, the corresponding protection switch is triggered to stop the elevator car, namely, when the car encounters the obstacle to stop running, the obstacle contacts with the car, even collides with the car, and a certain result is easily caused;

2. the lack of an early warning function belongs to post protection, and the stop of the car before the car contacts with an obstacle cannot be realized;

3. the safety protection device lacks redundancy protection, and only has one protection function of a touch type safety touch plate for the protection of the barrier at the bottom of the car, so that the reliability of the safety protection is not high;

disclosure of Invention

The utility model provides a redundant type obstacle avoidance protective car which comprises a car body and an elevator control system, wherein a safety touch plate is arranged below the car body, a diffuse reflection grating for detecting an obstacle downwards is arranged on the safety touch plate, a diffuse reflection photoelectric switch is electrically connected with the elevator control system, and elevator control responds to signals of the diffuse reflection photoelectric switch to control the elevator to stop.

The utility model is further provided with: the safety touch plate is hung and installed at the bottom of the car body.

The utility model is further provided with: at least one safety travel switch is arranged on each edge of the bottom of the car body.

The utility model is further provided with: the upper surface of the safety touch plate is provided with a plurality of safety travel trigger devices, and the safety travel trigger devices correspond to the safety travel switches one by one.

The utility model is further provided with: the diffuse reflection grating comprises a plurality of diffuse reflection photoelectric switches.

The utility model is further provided with: the diffuse reflection type photoelectric switch is arranged along each edge of the safety touch plate.

The utility model is further provided with: the interval of the diffuse reflection type photoelectric switch is not more than 40mm.

The beneficial technical effects of the utility model are as follows:

the utility model can effectively realize the collision protection of the barrier of the lift car in the vertical running space under the condition that the protection of the lift without the lift well surrounding wall is lost, and has the key point of pre-protection, and can realize the protection before the collision of the barrier and the lift car, thereby effectively reducing the accident rate. Meanwhile, the contact type barrier protection function and the non-contact type barrier protection function form redundancy protection, so that the reliability of the protection function is greatly improved.

Drawings

Fig. 1 is a schematic view of the bottom of a car body according to the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a schematic view of the structure of the bottom plate of the car body according to the present utility model.

Reference numerals: 1. a car body; 2. a safety touch plate; 3. diffuse reflection type photoelectric switch; 4. a bottom plate; 5. a safety travel switch.

Detailed Description

Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model.

Referring to fig. 1-3, the utility model provides a redundant type obstacle avoidance protective car body 1, which comprises a car body 1 and an elevator control system. The safety contact plate 2, the matched safety travel switch 5 and the safety travel trigger device are arranged below the car body 1, and the diffuse reflection grating for detecting the obstacle downwards is arranged on the safety contact plate 2.

The safety touch plate 2 is a groove type flat plate with four edges upwards turned and raised. The safety touch plate 2 is installed on the bottom plate 4 of the car body 1 in a hanging mode, and four hanging points are arranged at four corners of the safety touch plate 2. The hanging is carried out for example by welding the two ends of the steel cable to the base plate 4 and the safety contact plate 2, respectively. Through the mode installation of hanging, can make safety touch panel 2 bottom surface any position all can upwards move under the exogenic action, take place relative movement with car body 1, the resistance is little simultaneously.

The safety travel switch 5 adopts a mechanical travel switch, the model of which is YBLX-ME/8107, and which is provided with a normally closed electrical signal contact. The safety travel switch 5 is arranged on the bottom plate 4 of the car body 1, and at least one safety travel switch is arranged on each edge of the bottom plate 4. The normally closed electric signal contact is electrically connected with the elevator control system. The safety travel trigger devices are identical in number and in one-to-one correspondence with the safety travel switches 5, and are machined parts mounted on the upper surface of the safety touch plate 2 through bolts, and vertically opposite to the safety travel switches 5. When the safety touch plate 2 and the car body 1 relatively move, the safety travel trigger device can trigger the safety travel switch 5, and then the safety travel switch 5 sends a stop signal to the elevator control system, and the elevator control system responds to the stop signal to control the elevator to stop.

The diffuse reflection grating is formed by combining a plurality of diffuse reflection type photoelectric switches 3, and the diffuse reflection type photoelectric switches 3 are as follows: E3Z-D82. The distance between the diffuse reflection type photoelectric switches 3 is not more than 40mm, the detection distance is not less than 500mm, and the detection distance can be set according to the actual elevator running speed. The diffuse reflection type photoelectric switch 3 is arranged on the lower surface of the safety touch plate 2, the light emitting detection surface of the diffuse reflection type photoelectric switch is vertically downward, and four rows are arranged along the edge of the safety touch plate 2.

The early warning protection function is realized by the diffuse reflection grating and the elevator control system. The diffuse reflection type photoelectric switch 3 is electrically connected with an elevator control system. When the car body 1 runs downwards, if an obstacle is shielded in the vertical space range below the car body 1, the diffuse reflection type photoelectric switch 3 outputs a switching value signal when the obstacle approaches to a set distance, the switching value signal is a passive dry contact normally closed signal, the signal is connected to an elevator control system, and the elevator control system responds to the switching value signal and controls the elevator to stop running, so that safety protection before collision of the car body 1 and the obstacle is realized.

And when the car body 1 stops, the elevator control system can realize the follow-up action after stopping running through programming. For example, the obstacle disappears in the set time, the diffuse reflection grating input signal returns to normal, the elevator can continue to run downwards, the obstacle does not disappear in the set time, the elevator rises to run to the upper floor level position, and the elevator door and the hall door are opened.

While the utility model has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model, and in particular, the technical features set forth in the various embodiments may be combined in any manner so long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

In the description of the present utility model, terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate a direction or a positional relationship, are based on the direction or the positional relationship shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus/means that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus/means.

Thus far, the technical solution of the present utility model has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present utility model is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions will fall within the scope of the present utility model.

Claims

1. The utility model provides a redundant car of keeping away barrier protection, includes car body (1) and elevator control system, its characterized in that: the elevator car is characterized in that a safety touch plate (2) is arranged below the car body (1), a diffuse reflection grating for detecting obstacles downwards is arranged on the safety touch plate (2), the diffuse reflection grating comprises a plurality of diffuse reflection type photoelectric switches (3), the diffuse reflection type photoelectric switches (3) are electrically connected with an elevator control system, and the elevator control system responds to signals of the diffuse reflection type photoelectric switches (3) to control the elevator to stop.

2. The redundant obstacle avoidance car of claim 1 wherein: the safety touch plate (2) is hung and installed at the bottom of the car body (1).

3. The redundant obstacle avoidance car of claim 2 wherein: at least one safety travel switch (5) is arranged at each edge of the bottom of the car body (1).

4. A redundant obstacle avoidance car according to claim 3 wherein: the upper surface of the safety touch plate (2) is provided with a plurality of safety travel trigger devices, and the safety travel trigger devices are in one-to-one correspondence with the safety travel switches (5).

5. The redundant obstacle avoidance car of claim 1 wherein: the diffuse reflection type photoelectric switch (3) is arranged along each edge of the safety touch plate (2).

6. The redundant obstacle avoidance car of claim 1 wherein: the interval of the diffuse reflection type photoelectric switch (3) is not more than 40mm.