CN216102140U

CN216102140U - Passing alarm system for level crossing

Info

Publication number: CN216102140U
Application number: CN202121970014.8U
Authority: CN
Inventors: 王藩; 陈浪
Original assignee: Guiyang Depot Of China Railway Chengdu Bureau Group Co ltd
Current assignee: Guiyang Depot Of China Railway Chengdu Bureau Group Co ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2022-03-22
Anticipated expiration: 2031-08-20

Abstract

The utility model discloses a level crossing passing alarm system, which comprises a proximity switch, an alarm, a delayer and a distribution box, wherein the proximity switch is connected with the alarm; the proximity switches are arranged on guide rails at two ends of the level crossing, the alarm is arranged on the level crossing, the delayers are arranged in the power distribution, and the delayers are respectively connected with the proximity switches in parallel; the delayer is connected with the alarm; the utility model adopts a metal inductor; the metal sensor can only sense metal objects, so that false alarm caused by interference of other objects is avoided, and the alarm accuracy is improved; and the wiring is convenient in this scheme, and the circuit simple structure, stability is high, and the later maintenance is with low costs to external weather condition changes can not cause the interference to the proximity switch, makes this system stability higher.

Description

Passing alarm system for level crossing

Technical Field

The utility model relates to the technical field of train alarming, in particular to a passing-through alarming system for a level crossing.

Background

The passing-through alarm device for the vehicles on the level crossing is a device which sends out sound and light alarm in advance to prompt pedestrians that vehicles pass through and pay attention to safety in order to ensure the safety of the pedestrians passing through the level crossing when a shunting person carries out shunting operation in a warehouse and passes through the level crossing.

The principle of the method is that when the wheel pair of the train passes through a proximity switch (metal sensor), an alarm located on a level crossing is switched on, and the alarm gives an alarm. The device is also suitable for use at highway intersections when other sensors are used instead.

However, in the prior art, the passing of the flat-crossing vehicle through the alarm device has the defects of alarm delay, high false alarm rate, complex installation and the like.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems, the scheme provides a level crossing passing alarm system; the problem of among the prior art level crossing vehicle pass through alarm device can have the warning delay, the wrong report rate is high to install comparatively complicated is solved.

The scheme is realized as follows:

a level crossing passing alarm system comprises a proximity switch, an alarm, a delayer and a distribution box; the proximity switches are arranged on guide rails at two ends of the level crossing, the alarm is arranged on the level crossing, the delayers are arranged in the power distribution, and the delayers are respectively connected with the proximity switches in parallel; the delayer is connected with the alarm.

Based on the intersection passage alarm system structure, the time set in the delayer is adjustable from 5s to 10 s.

Based on the crossing passage alarm system structure, the proximity switch is separated from the crossing by 10 meters.

Based on the alarm system structure is passed through to above-mentioned level crossing, still be provided with contactor and auxiliary relay in the block terminal.

Based on the intersection passage alarm system structure, the proximity switch is a metal sensor, the model is LJ30A3-15-J/DZ, AC90-250V 400mA, the voltage is reduced by 7V, and the induction distance is 15 mm.

Based on the intersection passage alarm system structure, the delayer adopts an AC220V power-on delay time relay; the contactor adopts an AC220V contactor; the intermediate relay adopts an AC220V 5A intermediate relay.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model adopts a metal inductor; the metal sensor can only sense metal objects, so that false alarm caused by interference of other objects is avoided, and the alarm accuracy is improved; and the wiring is convenient in this scheme, and the circuit simple structure, stability is high, and the later maintenance is with low costs to external weather condition changes can not cause the interference to the proximity switch, makes this system stability higher.

2. The circuit diagram design of the utility model adopts an N-line power-off mode, thus reducing the risk of electric shock and short circuit of each electrical element in a long-term standby state.

Drawings

FIG. 1 is a schematic diagram of the construction of a level crossing passing alarm system according to the present invention;

FIG. 2 is a schematic circuit diagram of the present invention;

in the figure: 1. a proximity switch; 2. an alarm; 3. a distribution box; 4. a track.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Example 1

Referring to fig. 1, the present invention provides a technical solution:

a level crossing passage alarm system comprises a proximity switch 1, an alarm 2, a delayer and a distribution box 3; the proximity switch 1 is arranged on the rails 4 at two ends of the level crossing, the alarm 2 is arranged on the level crossing, the delayer is arranged in the power distribution, and the delayer is respectively connected with the proximity switch 1 in parallel; the delayer is connected with the alarm 2;

based on above-mentioned structure, set up proximity switch 1 on the track 4 at level crossing both ends, when the train passes through, train metal gyro wheel and proximity switch 1 contact trigger proximity switch 1, and proximity switch 1 passes through the delay timer in giving block terminal 3 with the signal of telecommunication transmission, and the delay timer triggers the delay signal, gives alarm 2 with the signal transmission, makes alarm 2 last warning predetermined time.

The time set in the delayer is adjustable within 5-10 s;

the proximity switch 1 sets up apart from tie way one end distance, and usual distance sets up to about 10 meters, when the train is in the position apart from tie way 10 meters department, carries out safety alarm promptly, warns passerby, reduces the emergence of traffic accident.

Still be provided with contactor and auxiliary relay in the block terminal 3, carry out safety protection to whole circuit system through contactor and auxiliary relay.

The proximity switch 1 is a metal inductor, the model is LJ30A3-15-J/DZ, AC90-250V 400mA, the voltage is reduced by 7V, the induction distance is 15mm, the proximity switch 1 can only induce metal objects, false alarm caused by interference of other objects is avoided, and the alarm accuracy is improved; the wiring is convenient, the change of weather conditions can not cause interference to the approach switch 1, and the waterproof function is realized; the distance needs to be adjusted when the device is installed, and the distance precision requirement is high.

The delayer adopts an AC220V power-on delay time relay; the contactor adopts an AC220V contactor; the intermediate relay adopts an AC220V 5A intermediate relay;

this scheme all is provided with proximity switch 1 on the track 4 at level crossing both ends, makes the train get into and all can send the warning when passing through the level crossing on left side or right side, promotes holistic security performance.

The present solution provides a specific circuit diagram in this embodiment, as shown in fig. 2:

(1) when the train wheel pair passes through the proximity switch 1(Q1, Q2, Q3 and Q4), the coil of the contactor KM is attracted, the coil of the time relay KT is electrified, the KM normally open contact is closed, and the alarm 2 gives an alarm; when the time relay countdown is finished for 5s, the time relay KT is electrified, the disconnection contact is disconnected in a delayed mode, the KM coil is powered off, the KT coil is powered off, and the alarm 2 stops giving an alarm.

(2) The false alarm is prevented; when the wheel pair of the train vehicle is just pressed on the proximity switch 1, the coil of the contactor is always electrified, the coil of the time relay is also always electrified, the KT of the time relay is electrified, the closing contact is closed in a delayed mode, the KA coil of the intermediate relay is electrified, the KA normally closed contact is disconnected, and the alarm stops giving an alarm.

This scheme except normal alarming function, still possesses the function of preventing the wrong report promptly, and is more intelligent when using.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A level crossing passes through alarm system which characterized in that: comprises a proximity switch, an alarm, a delayer and a distribution box; the proximity switches are arranged on guide rails at two ends of the level crossing, the alarm is arranged on the level crossing, the delayers are arranged in the power distribution, and the delayers are respectively connected with the proximity switches in parallel; the delayer is connected with the alarm.

2. A level crossing passing alarm system according to claim 1, wherein: the time set in the delayer is adjustable within 5-10 s.

3. A level crossing passing alarm system according to claim 1 or 2, wherein: the proximity switches are spaced 10 meters apart from the level crossing.

4. A level crossing passing alarm system according to claim 1, wherein: and a contactor and an intermediate relay are also arranged in the distribution box.

5. A level crossing passing alarm system according to claim 1, wherein: the proximity switch is a metal inductor with the model of LJ30A3-15-J/DZ, AC90-250V 400mA, voltage drop of 7V and induction distance of 15 mm.

6. A level crossing passing alarm system according to claim 4, wherein: the delayer adopts an AC220V power-on delay time relay; the contactor adopts an AC220V contactor; the intermediate relay adopts an AC220V 5A intermediate relay.