RU148370U1 - MILITARY CONTROL SYSTEM - Google Patents

Abstract

The control system for the movement of the sludge scraper of the radial sump, consisting of the sludge scraper of the radial sump, containing a bridge, the annular support of the bridge is a side of the radial sump, placed in the center of the radial sump of the support and mounted on board the radial sump of at least one wheel with an electric drive, characterized in that at least one sensor with sensing elements that are located in front of the wheel on both sides of the wheel is sequentially placed in the power supply circuit of the electric motor at a distance equal to the gauge.

Description

The proposal relates to the field of wastewater treatment and is intended, in particular, to monitor the health of the rotational mechanism for removing sludge from radial sewage sumps.

As you know, sewage sump tanks contain a cylindrical tank, in the lower part of which there are installed means for sludge removal (see "Polytechnical Dictionary" edited by II Artobolevsky, ed. Sov. Encyclopedia, Moscow, 1976, p. .314) called a sludge trap. The sump is rotationally driven around the vertical axis of the tank using a drive mechanism located at the end of the truss. The truss support is mounted on board the tank and is driven by said drive mechanism.

The movable support is made in the form of a wheel fixed at the end of the truss, on the axis of which a reduction gear is placed, which reduces the rotation speed of the support to the normative one (see Technical Documentation No. 44413.00, Inventory No. 163504, Mosvodokanal Research Institute project, 1976).

The disadvantage of this design is the lack of control over the position of the support on board the tank.

There is also known a design on a movable support of rotating farms of radial sedimentation tanks, comprising a frame with a drive wheel support, with an electric motor connected to its shaft through a reduction gear, and the drive wheel support made in the form of a two-wheeled trolley with mechanisms for adjusting the spatial position of the wheels, using a mechanism for changing the radius of movement of the support farm points and a mechanism for changing the angle of inclination of the wheels relative to the vertical plane and each wheel is equipped with a mechanism for changing the angle of rotation B wheels relative to the tangent to the wheel path. (RF certificate for utility model No. 23616 "Moving support of rotating radial sump farms."

The complexity of the design and the lack of control of the position of the wheels on board the tank are a design flaw.

Also known is the running gear of the sludge scraper of the radial sedimentation tank PRO-54, manufactured by the company Arsenal Engineering Plant OJSC (St. Petersburg), which contains a bridge, an annular support and a two-wheeled drive trolley with a sequential arrangement of wheels installed with corresponding rotation drives in the housing, which connected to the bridge movably with the possibility of swinging around the horizontal axis (Planetary working equipment of the rad. sedimentation tank PRO-54. Operation manual, OJSC MZ Arsenal, 2005).

In this design, a balanced suspension of the wheels is carried out and an equal distribution of the weight load on two wheels is ensured.

The design drawback is that the instantaneous center of rotation of the moving carriage and the center of rotation of the bridge do not coincide, the carriage tends to deviate from the ideal trajectory of movement, which, in the absence of a device for signaling the wheel to leave the radial sedimentation tank, makes the structure dangerous to use.

Known undercarriage of the sludge scraper radial sump, taken as a prototype (patent for IZO No. 2335324), containing a bridge, an annular bridge support, located in the center of the radial sump, and mounted on board the radial sump drive two-wheeled cart with a sequential arrangement of wheels.

The design drawback is the lack of a warning system (alarm) about the occurrence of an emergency associated with the departure of the wheelset from the side.

The objective of the proposed solution is to create a chassis design for the sludge scraper of the radial sedimentation tank, in which the advantages of the known suspension would be preserved and at the same time an alarm should be provided about an emergency situation caused by the possibility of the said suspension coming off the trouble-free trajectory.

The technical result of the invention is the formation of a signal indicating that the suspension has reached its limit position, ensuring trouble-free wheel travel.

Obtaining a technical result is ensured by the fact that in the undercarriage of the sludge scraper of the radial settler 1, containing the bridge 3, the annular support of the bridge is a side of the radial settler 2, the support 4 located in the center of the radial settler, and the drive carriage mounted on board the radial settler 5 s, at least , one wheel 6 with an electric drive in the circuit of its power supply, at least one sensor 7 is placed, and the sensitive elements of the sensor / sensors 8 are placed in front of the wheel on both sides at a distance equal to the width of the track 9 wheels.

The sensor is connected by wires 10 to the opening relay 11, which provide the opening of the power circuit of the electric motor 12.

The system is illustrated by a drawing on which the following elements are indicated:

1 - radial sump;

2 - board radial sump;

3 - sludge bridge;

4 - support

5 - drive trolley of the bridge;

6 - a running wheel with a bridge drive electric motor;

7 - sensor;

8 - sensitive elements;

9 - external and internal trajectories of the sides of the running wheel;

11 trip relay.

12 power supply circuit of the bridge drive electric motor;

The system operates as follows.

The movable bridge of the sludge scraper 3 of the radial settler 1 rests on the support 4 and the running wheel 6 connected to the bridge 5 is moved along the side of the radial settler 2. The running wheel with an electric motor 6 is made in a railway or bus version. The rotation of the bridge 3 is carried out using an electric motor 6.

The wheel trolley makes one revolution around the side of the sump in about 1 hour. The deformation of the structure also causes a change in the position of the running wheel 6 on board the radial settler 2. Monitoring the position of the wheel is carried out using at least one sensor 7, and the sensitive elements of the sensor / sensors 8 associated with it are placed in front of the running wheel of the axle scraper drive and both sides of this wheel 9. Thus, one sensor controls, for example, the trajectory of the inside of the running wheel, while the other sensor controls the path of the outer side x single wheel. The occurrence of an emergency is considered a coincidence, one of the above trajectories with the edge of the corresponding side of the radial sump. In the event of an emergency, one of the sensitive elements of the sensor / sensors loses contact with the side of the radial sump, the sensor 7 generates an electrical signal to open the power supply circuit 10 of the disconnecting relay 11 and the electric motor 12 of the axle scraper drive, which stops the said drive and prevents the further development of the emergency in an accident in the form of a fall of a bridge of a silt-scraper into a sump.

Claims (1)

The control system for the movement of the sludge scraper of the radial sump, consisting of the sludge scraper of the radial sump, containing a bridge, the annular support of the bridge is a side of the radial sump, placed in the center of the radial sump of the support and mounted on board the radial sump of at least one wheel with an electric drive, characterized in that at least one sensor with sensing elements that are located in front of the wheel on both sides of the wheel is sequentially placed in the power supply circuit of the electric motor at a distance equal to the gauge.

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