Sedimentation tank mud thickness detection device based on two roof beam grab bucket hoist
Technical Field
The utility model belongs to the water treatment facilities field especially relates to a sedimentation tank mud thickness detection device based on two roof beam grab bucket cranes.
Background
The industrial sewage sedimentation tank is one of effective treatment means which can effectively treat industrial wastewater and oil stains, prevent sewage and pollutants from directly flowing into a water area and prevent urban environment from being polluted, so that the sludge thickness of the sedimentation tank can be detected and timely cleaned, and the industrial sewage sedimentation tank has important significance for industrial production and environmental development.
At present, the depth of a sedimentation tank set in a large-scale factory is deep, most of workers clean the sedimentation tank in daily production operation are limited by visual inspection or experience and simple hand tools, and operation beside the sedimentation tank is dangerous to a certain extent due to the influence of weather or other severe conditions, so that an automatic detection device capable of detecting the thickness of sludge in the sedimentation tank in real time and reminding people of cleaning the sludge in time is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a sedimentation tank mud thickness detection device based on two roof beam grab bucket cranes that degree of automation is high, its technical scheme as follows:
sedimentation tank mud thickness detection device based on two roof beam grab bucket hoist, including the bridge crane of longitudinal movement and dolly along lateral shifting is followed to the cart, the dolly is connected with the grab bucket that can grab mud in the below sedimentation tank, the wheel connection of cart has the cart displacement encoder that detects cart longitudinal displacement data, the wheel connection of dolly has the dolly displacement encoder that detects dolly lateral displacement data, dolly displacement encoder and cart displacement encoder are connected with information acquisition device, information acquisition device still is connected with and is located the dolly and be used for detecting the laser sensor of distance between dolly and the mud.
Preferably, a cart motor and a trolley motor of the bridge crane both adopt stepping motors or servo motors.
Preferably, the area of a square area corresponding to one step distance of the cart motor and one step distance of the trolley motor is not larger than the area of the maximum opening when the grab bucket is fully opened.
Preferably, the number of the laser sensors is at least three, and the projection of a graph formed by connecting the laser sensors in sequence on the horizontal plane falls into a square area formed by the projection of one step length of the cart motor and one step length of the trolley motor on the horizontal plane.
Preferably, the laser sensors are uniformly distributed in the circumferential direction with the gripping head as the center.
Preferably, the signal acquisition device is further connected with a main control unit which is used for judging whether the data measured by the laser sensor is lower than a set threshold value and starting the grab bucket when the data measured by the laser sensor is lower than the set threshold value.
The utility model has the advantages as follows:
the structure is simple, and the use is convenient; the manufacturing cost is low, the difficulty is low, and the device can be manufactured at lower cost; the device provides convenience for scientific research in the field, the position of the trolley can be monitored in real time by adopting a displacement encoder, and the laser sensor is used for detecting the thickness of sludge in the sedimentation tank below the trolley and transmitting detection information to the main control unit. The method has the advantages of scientific design, strong practicability, accurate measurement and the like.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and obviously, the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor;
FIG. 1 is a schematic structural diagram of the detecting device of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is an enlarged view of a portion of FIG. 1 at B;
FIG. 4 is an enlarged view of a portion of FIG. 1 at C;
fig. 5 is the schematic diagram of the division of the sedimentation tank area and the corresponding installation position of the laser sensor.
In the figure: 1. the device comprises a trolley, 2, a main control unit, 3, a trolley, 4, a grab bucket, 5, a sedimentation tank, 6, a trolley displacement encoder, 7, trolley wheels, 8, trolley wheels, 9, a trolley displacement encoder, 10 and a laser sensor.
Detailed Description
In order to make the technical purpose, technical solution and advantageous effects of the present invention clearer, the technical solution of the present invention is further described below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 4, the sedimentation tank sludge thickness detection device based on the double-beam grab bucket crane is improved by applying the traditional grab bucket crane and mainly comprises a bridge crane. The device comprises a trolley 1, a main control unit 2, a cart 3, a grab bucket 4, a sedimentation tank 5, a trolley displacement encoder 6, trolley wheels 7, cart wheels 8, a cart displacement encoder 9 and a laser sensor 10. Dolly 1 is connected with and grabs the head 4 of grabbing of taking mud in the below sedimentation tank, cart 3's wheel connection has the cart displacement encoder 9 that detects 3 vertical displacement data of cart, cart 1's wheel connection has the dolly displacement encoder 6 that detects 1 lateral displacement data of dolly, dolly displacement encoder 6 and cart displacement encoder 9 are connected with information acquisition device, information acquisition device still is connected with and is located dolly 1 and is used for detecting the laser sensor 10 of the distance between dolly 1 and the mud. The motor of the cart 3 and the motor of the trolley 1 of the bridge crane both adopt stepping motors. The area of a square area corresponding to one step distance of the motor of the cart 3 and one step distance of the motor of the trolley 1 is not larger than the area of the maximum opening when the grabbing head 4 is fully opened. The projection of a graph formed by sequentially connecting the laser sensors 10 on a horizontal plane falls into a square area formed by the projection of one step length of the motor of the cart 3 and one step length of the motor of the trolley 1 on the horizontal plane. The laser sensors 10 are uniformly distributed in the circumferential direction with the gripper head as the center. The signal acquisition device is also connected with a main control unit 2 which is used for judging whether the data measured by the laser sensor 10 is lower than a set threshold value and starting the grabbing head 4 when the data measured by the laser sensor is lower than the set threshold value, the main control unit 2 is respectively connected with the displacement encoder and the laser sensor 10, and the main control unit 2 can be used for determining the positions of the cart 3 and the trolley 1 by receiving displacement information measured by the two displacement encoders; judging whether the sludge in the area needs to be cleaned or not according to whether the sludge thickness measured by the laser sensor 10 exceeds a set value to be cleaned or not; if the cleaning is not needed, the next area is continuously detected, and if the cleaning is needed, the main control unit 2 generates a control instruction to control the action instructions of descending, grabbing and lifting of the grab bucket 4.
Setting a coordinate origin, and judging the traveling directions of the cart 3 and the trolley 1 and the area of the trolley 1 according to the distance change of the cart 3 and the trolley 1 relative to the coordinate origin: the sedimentation tank is divided into a plurality of small areas according to the grabbing range of the grab bucket 4, each area is numbered, and the size of each area is slightly smaller than the maximum grabbing range when the grab bucket is fully opened. The step length of each movement of the cart 3 and the trolley 1 is set according to the divided areas, the distance of each movement of the cart 3 or the trolley 2 is the size of one area, and each movement of the trolley 1 is positioned at the central position of the small area divided by the sedimentation tank. When the trolley 1 moves one area each time, the four laser sensors 10 simultaneously detect the thickness of the sludge in the sedimentation tank below and transmit the detected information to the main control unit 2.
As shown in fig. 5, the sedimentation tank is divided into a plurality of small areas according to the maximum grabbing range of the grab bucket 4, and the divided areas are numbered, wherein each area is slightly smaller than the maximum grabbing range of the grab bucket 4 when the grab bucket is fully opened; and setting a coordinate origin, and judging the traveling directions of the cart 3 and the trolley 1 and the area of the trolley 1 according to the distance change of the cart and the trolley relative to the coordinate origin. The displacement of the crane cart 6 or the crane cart 3 in each walking is the size of an area, the grab bucket 4 is positioned in the center of the area when the crane cart 6 or the crane cart 3 moves to the area, and the displacement encoders 6 and 9 are respectively arranged on the cart wheels 7 and the cart wheels 8 and are used for detecting the position information of the crane cart 1 and the crane cart 3 in real time. When the cart 3 moves a longitudinal displacement, the cart displacement encoder 9 records the displacement of one-time walking and transmits the displacement information to the main control unit 2, the trolley displacement encoder 6 records the displacement of one-time walking when the trolley 1 moves a transverse displacement, and simultaneously transmits the displacement information to the main control unit 2, the positions of the trolley 1 and the cart 3 and the area where the trolley is located are determined according to the relationship between the displacement information of the two displacement encoders and the origin of coordinates, when the displacement of the trolley 1 or the trolley 3 is changed once, the four laser sensors 10 positioned at the bottom of the trolley 1 simultaneously detect the thickness of the sludge of the lower sedimentation tank 5 and transmit the detection information to the main control unit 2, and when two or more laser sensors 10 detect that the thickness of the sludge of the lower part is larger than a preset value, the main control unit 2 generates a control signal for controlling the descending of the grab bucket 4 to control the descending of the grab bucket 4, And (5) an action instruction of grabbing and lifting. And if the thickness of the sludge below the three or four laser sensors 10 is smaller than the preset value, continuously detecting the next area until all areas of the sedimentation tank are detected, and completing one detection.
Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating but not limiting the technical solution of the present invention, and any equivalent replacement and modification or partial replacement which do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.