CN219865313U - Non-contact type intelligent monitoring device for air brake - Google Patents

Abstract

The utility model provides a non-contact type air brake intelligent monitoring device, wherein a measuring reference rod is arranged on the lower surface of an air brake flashboard, two first proximity switches and two second proximity switches are arranged on a cylinder body, the first proximity switches and the second proximity switches are vertically arranged, the lower end of the measuring reference rod is close to the bottommost proximity switch, and the end faces of the first proximity switches and the second proximity switches face the surface of the measuring reference rod. The non-contact signal acquisition mode effectively avoids mechanical damage of the original design, reduces equipment faults and improves equipment stability. The monitoring device with the independent state indication function and the self-diagnosis function effectively improves the maintenance efficiency and reduces the corresponding labor cost.

Description

Non-contact type intelligent monitoring device for air brake

Technical Field

The utility model relates to the field of intelligent monitoring of air brake, in particular to a non-contact intelligent monitoring device for air brake.

Background

The mechanical braking system is an important device in the shutdown process of the hydro-generator set. In the stopping process of the hydraulic generator, stopping time can be effectively reduced, the running time of the unit below the rated rotating speed is reduced, and bearing abrasion of the unit and overheating and tile burning caused by friction at low rotating speed are reduced. The mechanical braking system is a damper system and consists of a damper device, a damper position node, a damper switching electromagnetic valve and a damper air system pipeline. The number of the flashboard and the air brake position nodes of each unit is slightly different from each other according to different machine types, and is generally about 32-36 sets;

currently, a position travel switch (see an accessory) is generally adopted to convert a displacement signal of a damper into a switching value electric signal, NC nodes of all damper position nodes are connected in parallel to represent a brake damper input state, and NO nodes of all damper position nodes are connected in series to represent a brake damper drop state. All signals are connected in series and parallel in the transit terminal box and then are sent to the monitoring system through a hard wire.

All the air brake nodes have no status indication, when individual air brake nodes fail, the failure needs to be removed one by one, and the factor quantity is large, so that the time and the labor are wasted, and the failure point can not be positioned quickly.

Because the action stroke of the air brake node is shorter, the air brake node is easy to damage after the flashboard repeatedly acts.

Disclosure of Invention

The utility model mainly aims to provide a non-contact type intelligent air brake monitoring device which solves the problems that when other air brake nodes fail, the failure needs to be removed one by one, the factor is large, time and labor are wasted, and the failure point cannot be positioned quickly.

In order to solve the technical problems, the utility model adopts the following technical scheme: a non-contact type air brake intelligent monitoring device is characterized in that a measuring reference rod is arranged on the lower surface of an air brake flashboard, two first proximity switches and two second proximity switches are arranged on a cylinder body, the first proximity switches and the second proximity switches are vertically arranged, the lower end of the measuring reference rod is close to the bottommost proximity switch, and the end faces of the first proximity switches and the second proximity switches face the surface of the measuring reference rod.

In the preferred scheme, first proximity switch and second proximity switch pass through the installing support setting on the cylinder body, are equipped with the fixed plate on the installing support, are equipped with waist shape hole on the fixed plate, and first proximity switch and second proximity switch set firmly on waist shape hole.

In the preferred scheme, be equipped with two at least nuts on the proximity switch, nut and proximity switch threaded connection, two nuts set up in the fixed plate both sides, and proximity switch passes through two nuts to be fixed on the fixed plate.

In the preferred scheme, the fixed plate both sides are fixedly arranged on the base through a plurality of supporting blocks, and the base is arranged on the cylinder body.

In the preferred scheme, the air brake is also provided with a control panel, a plurality of monitoring lamps are arranged on the control panel, and the monitoring lamps are electrically connected with the proximity switches of the air brake cylinders;

the monitoring light is used for indicating the running condition of the single air brake flashboard.

In the preferred scheme, the monitoring lamp below is equipped with the digital label, and the digital label corresponds the serial number of every damper flashboard.

In the preferred scheme, the control panel is also provided with an alarm lamp.

The utility model provides a non-contact type intelligent air brake monitoring device, which changes the state of an original air brake monitored by a contact type position travel switch, adopts a non-contact type proximity switch to monitor the state, has the functions of state feedback and fault monitoring for each flashboard, and increases the system abnormality alarming function. The non-contact signal acquisition mode effectively avoids mechanical damage of the original design, reduces equipment faults and improves equipment stability. The monitoring device with the independent state indication function and the self-diagnosis function effectively improves the maintenance efficiency and reduces the corresponding labor cost.

Drawings

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is a block diagram of the general arrangement of the present utility model;

FIG. 2 is a block diagram of the mounting bracket mounting proximity switch position of the present utility model;

FIG. 3 is a block diagram of a mounting bracket mounting proximity switch of the present utility model;

FIG. 4 is a flow chart of a single damper state determination according to the present utility model;

FIG. 5 is a flow chart of the damper system determination of the present utility model;

in the figure: a rotor 1; a damper shutter 2; a cylinder 3; a measurement reference rod 4; a first proximity switch 5; a second proximity switch 6; a mounting bracket 7; a fixing plate 701; a support block 702; a base 703; a control panel 8; a monitor lamp 9; a digital label 10.

Detailed Description

Implement 1

As shown in fig. 1-5, a non-contact type intelligent monitoring device for a wind gate is provided, a measuring reference rod 4 is arranged on the lower surface of a wind gate flashboard 2, two first proximity switches 5 and two second proximity switches 6 are arranged on a cylinder body 3, the first proximity switches 5 and the second proximity switches 6 are vertically arranged, the lower end of the measuring reference rod 4 is close to the lowest proximity switch, and the end faces of the first proximity switches 5 and the second proximity switches 6 face the surface of the measuring reference rod 4. The proximity switch is a position switch which can be operated without mechanical direct contact with a moving part, and when an induction surface of the object proximity switch reaches an action distance, the switch can be actuated without mechanical contact and any pressure application, so as to drive a direct current electric appliance or provide a control instruction for a computer plc device.

Each air brake is provided with two proximity switches, and a measuring reference rod 4 for extending the displacement of the brake is arranged at the bottom of the brake air brake. The installation position is shown as 1-2.

When the damper shutter 2 falls, the first proximity switch 5 and the second proximity switch 6 both act to indicate that the current damper is in the falling state.

When the damper is thrown, the second proximity switch 6 is reset and the first proximity switch 5 is actuated or reset indicating that the current damper is in the thrown state.

When the first proximity switch 5 is reset and the second proximity switch 6 is operated, the measurement fault is indicated, and the first proximity switch 5 is in fault.

In the preferred scheme, first proximity switch 5 and second proximity switch 6 pass through installing support 7 setting on cylinder body 3, are equipped with fixed plate 701 on the installing support 7, are equipped with waist shape hole on the fixed plate 701, and first proximity switch 5 and second proximity switch 6 set firmly on waist shape hole. The first proximity switch 5 and the second proximity switch 6 can slide up and down in the kidney-shaped hole.

In a preferred embodiment, at least two nuts are disposed on the proximity switch, the nuts are in threaded connection with the proximity switch, the two nuts are disposed on two sides of the fixing plate 701, and the proximity switch is fixed on the fixing plate 701 through the two nuts. The first proximity switch 5 and the second proximity switch 6 are fixedly arranged on the kidney-shaped hole by two nuts.

In a preferred embodiment, two sides of the fixing plate 701 are fixed on the base 703 through a plurality of supporting blocks 702, and the base 703 is disposed on the cylinder 3. Replacing the original distance sensor. The first proximity switch 5 and the second proximity switch 6 are conveniently installed.

In the preferred scheme, the air brake is also provided with a control panel 8, a plurality of monitoring lamps 9 are arranged on the control panel 8, and the monitoring lamps 9 are electrically connected with the proximity switches of the air brake cylinders 3; the monitor light 9 is used to indicate the operation of the individual damper blades 2. A digital label 10 is arranged below the monitoring lamp 9, and the digital label 10 corresponds to the number of each air brake flashboard 2.

The working power supply of the device adopts 24VDC for power supply; respectively acquiring 36 sets of air brake proximity switch input signals and receiving brake air brake switching instructions; logic control is carried out by adopting a singlechip; the panel indicator light output is shown in figure 1, and the 1# -36# indicator light adopts red, green and yellow to respectively indicate 1# -36# air brake input, push-out and failure; the air brake input, the air brake falling, the measurement fault and the device fault respectively represent the corresponding states of the system. The wind gate switching state and fault state signals are sent to the monitoring system in a switching value mode.

Implement 2

Further described in connection with example 1, as shown in fig. 1 to 5, the states of the damper blades are determined individually. The 1# and 2# approach switches are operated to judge that the air brake falls; the return of the 1# proximity switch and the 2# proximity switch is determined as the input of the air brake after the return of the 1# proximity switch and the 2# proximity switch are both performed; the 1# proximity switch is reset and the 2# proximity switch operation is determined as a measurement fault. As shown in fig. 4.

And comprehensively judging the system state. And respectively judging the states of the air brakes within 3 minutes of receiving the brake air brake switching command, judging that the system is in the air brake falling state when all the air brakes are in the falling state, and judging that the system is in the air brake switching state when any air brake is in the switching state. As shown in fig. 5.

The above embodiments are only preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the scope of the present utility model should be defined by the claims, including the equivalents of the technical features in the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.

Claims (7)

1. A non-contact type air brake intelligent monitoring device is characterized in that: the air brake flashboard (2) lower surface is equipped with measurement reference pole (4), is equipped with two first proximity switch (5) and second proximity switch (6) on cylinder body (3), and vertical range setting of first proximity switch (5) and second proximity switch (6) measures the proximity switch that reference pole (4) lower extreme is close to the below, and first proximity switch (5) and second proximity switch (6) terminal surface orientation measurement reference pole (4) surface.

2. The intelligent non-contact air brake monitoring device according to claim 1, wherein: the first proximity switch (5) and the second proximity switch (6) are arranged on the cylinder body (3) through a mounting bracket (7), a fixing plate (701) is arranged on the mounting bracket (7), a kidney-shaped hole is formed in the fixing plate (701), and the first proximity switch (5) and the second proximity switch (6) are fixedly arranged on the kidney-shaped hole.

3. The intelligent non-contact air brake monitoring device according to claim 2, wherein: the proximity switch is provided with at least two nuts which are in threaded connection with the proximity switch, the two nuts are arranged on two sides of the fixed plate (701), and the proximity switch is fixed on the fixed plate (701) through the two nuts.

4. The intelligent non-contact air brake monitoring device according to claim 2, wherein: both sides of the fixed plate (701) are fixedly arranged on the base (703) through a plurality of supporting blocks (702), and the base (703) is arranged on the cylinder body (3).

5. The intelligent non-contact air brake monitoring device according to claim 1, wherein: the air brake is also provided with a control panel (8), a plurality of monitoring lamps (9) are arranged on the control panel (8), and the monitoring lamps (9) are electrically connected with the proximity switches of the air brake cylinders (3);

the monitoring lamp (9) is used for indicating the running condition of the single air brake flashboard (2).

6. The intelligent non-contact air brake monitoring device according to claim 5, wherein: a digital label (10) is arranged below the monitoring lamp (9), and the digital label (10) corresponds to the number of each air brake flashboard (2).

7. The intelligent non-contact air brake monitoring device according to claim 5, wherein: the control panel (8) is also provided with an alarm lamp.