Solid waste density detection device

Abstract

The invention relates to the technical field of density measurement, in particular to a solid waste density detection device. Comprising a wagon balance for weighing a truck, a license plate camera for identifying the license plate number of the truck to obtain the tare weight of the truck and the length, width and height parameters in a compartment, and a laser scanner for detecting and calculating the height of solid waste loaded in the compartment of the truck, a shielding shed is detachably connected between the upper portions of the two rows of vertical rods and on the opposite surfaces of the two rows of vertical rods, and the wagon balance, the license plate camera and the laser scanner are all located under the shielding shed, so that when density measurement work is conducted, the license plate camera and the laser scanner are not prone to being greatly affected by rain and snow weather.

Description

Technical Field

[0001] This application relates to the field of density measurement technologies, and particularly to a device for detecting the density of solid waste. Background Art

[0002] Solid waste, such as general industrial waste and sludge, etc., needs to be measured after being transported to a unified transfer station, such as density detection. On the one hand, solid waste with different densities is stacked in different areas to facilitate subsequent reasonable proportioning of the blended combustion materials for thermal power generation. On the other hand, it can also initially judge whether the type of solid waste is consistent with the type on the bill of lading based on the density.

[0003] Currently, the detection of the weight of trucks generally uses a weighbridge, and the license plate information is identified when the truck passes over the weighbridge to obtain the unladen weight of the corresponding vehicle stored in advance, that is, the tare weight of the truck. Then, the weighbridge weighs the truck loaded with solid waste to obtain the gross weight of the truck. Subtracting the tare weight from the gross weight of the truck can obtain the weight of the solid waste. For example, a measuring device for a transport vehicle with the publication number CN204881521U.

[0004] For the detection of the volume of the solid waste loaded in the truck, generally, multiple laser scanners arranged along the width direction of the truck are used to obtain the values of the length, width, and height of the solid waste loaded in the forward moving truck carriage, so as to calculate and obtain the volume of the solid waste. Reference can be made to a device for on-line measurement of the storage volume of a material yard stack with the publication number CN207585702U.

[0005] In view of the above related technologies, general density measurement facilities are set up outdoors. When measuring the volume of the solid waste loaded in the truck in rainy or snowy weather, it is easily affected by the raindrops and snowflakes falling in the air, resulting in a low accuracy of the volume calculation of the solid waste, or even unable to obtain the volume of the solid waste, thus causing the density detection of the solid waste loaded in the truck to be unable to proceed smoothly. Summary of the Invention

[0006] In order to smoothly carry out the density detection work of solid waste in rainy or snowy weather, this application provides a device for detecting the density of solid waste.

[0007] A device for detecting the density of solid waste provided by this application adopts the following technical solutions.

[0008] A solid waste density detection device comprises a floor scale for weighing a truck, a license plate camera for identifying the truck license plate number to obtain the truck tare weight and the length, width and height parameters of the interior of the truck compartment, and a plurality of laser scanners for detecting and calculating the height of the solid waste loaded in the truck compartment. There are a row of vertical poles on both sides of the floor scale, and shielding sheds are detachably connected between the upper parts of the two rows of vertical poles and on the opposite surfaces. The floor scale, the license plate camera and the laser scanner are all located directly below the shielding shed.

[0009] By adopting the above technical solution and setting up a shelter, the license plate camera and laser scanner are not easily disturbed in rainy and snowy weather. It is also suitable for the renovation of the density detection facilities that have been built.

[0010] Optionally, the area directly below the shelter includes a front area, a measuring area and a rear area in sequence in accordance with the forward direction of the truck during density detection. The front area, the measuring area and the rear area are all fully accessible to trucks, and the weighbridge is located in the measuring area.

[0011] By adopting the above technical solution, when a truck enters the front area, the people on the truck can get off and lift up the tarpaulin, and then the truck drives into the measuring area for density measurement. After the measurement is completed, the truck enters the rear area, so that it is more convenient to open or bind the tarpaulin in rainy and snowy weather, and it can also reduce the entry of rain or snow into the truck compartment, causing deviations in the weight and volume detection of the solid waste to be tested, thereby reducing the deviation caused by density measurement.

[0012] Optionally, the bottom end of the vertical pole is rotatably connected to a pole bottom wheel, and both sides of the floor scale are provided with wheel rails pre-buried in the ground and capable of rotating the pole bottom wheel. The manufacturing material of the shelter includes any one or more of PVC, PTFE and ETFE.

[0013] By adopting the above technical solution, the shed can be removed when it is being repaired to prevent damage to the laser scanner. There are no other objects directly under the shed, which can also facilitate maintenance work. In addition, in extreme weather, sheds with larger surface areas can be moved into the storage room to prevent damage.

[0014] Optionally, all the uprights are divided into groups of two along the forward moving direction during truck detection, a cross frame is detachably connected between two uprights in the same group, and a scissor-type telescopic frame is installed between two adjacent cross frames.

[0015] By adopting the above technical solution, the strength of the shelter shed under moderate wind force in normal rainy and snowy weather can be improved, and the length of the shelter shed can also be shortened to reduce the space occupied by storage.

[0016] Optionally, there are support columns for installing license plate cameras and laser scanners around the weighbridge. The support columns are provided with a spray assembly capable of spraying cleaning liquid towards the lens of the laser scanner and a wiping assembly for wiping the surface of the lens of the laser scanner.

[0017] By adopting the above technical solution, the surface of the lens of the laser scanner at a certain height can be cleaned to reduce the influence of dust, etc. on the normal operation of the laser scanner.

[0018] Optionally, the spray assembly includes a nozzle slide rod slidably connected to the support column along the width direction of the weighbridge, an atomizing nozzle detachably connected to the nozzle slide rod and capable of spraying cleaning liquid, and a spray motor provided on the support column and driving the nozzle slide rod to move.

[0019] By adopting the above technical solution, cleaning liquid can be sprayed on the lenses of multiple laser scanners.

[0020] Optionally, the nozzle slide rod includes a moving rod slidably connected to the support column, a rotating member rotatably connected to the moving rod and for detachably connecting the atomizing nozzle, and a rotating motor detachably connected to the moving rod and driving the rotating member to rotate. The direction of the axis of rotation of the rotating member is perpendicular to the direction of the connection line of all laser scanners.

[0021] By adopting the above technical solution, relatively sufficient water mist can be sprayed on the surfaces of the lenses of laser scanners set at different angles.

[0022] Optionally, the wiping assembly includes a cloth slide rod slidably connected to the support column along the width direction of the weighbridge, several rotary cloth motors moving along with the cloth slide rod, cleaning cloth blocks driven by the rotary cloth motors to rotate for wiping the lenses of the laser scanners, a wiping motor driving the cloth slide rod to move, and a height-adjusting electric cylinder driving the rotary cloth motors to change their heights. One rotary cloth motor is provided corresponding to each laser scanner.

[0023] By adopting the above technical solution, the movement of one cloth slide rod in combination with the setting of multiple cleaning cloth blocks can process the lenses of all laser scanners at different angles.

[0024] Optionally, a high-pressure nozzle capable of spraying water flow towards the cleaning cloth block and a drying pipe for sending hot air flow to the cleaning cloth block are detachably connected to the position of the support column far from the laser scanner.

[0025] By adopting the above technical solution, before the cleaning cloth block wipes the lens of the laser scanner, the cleaning cloth block is first rinsed and then dried, and then the cleaning cloth block wipes the lens of the laser scanner to reduce the residue of dust during the wiping process.

[0026] Optionally, rod nozzles capable of forming a water mist barrier are detachably connected to the vertical rods at the end where the shelter allows trucks to drive in.

[0027] By adopting the above technical solutions, the dust raised during the process of trucks driving into and out of the shielding shed is reduced, and the situation of dust floating in the shielding shed is minimized as much as possible.

[0028] In summary, the present application includes at least the following beneficial effects:

[0029] 1. A shielding shed is provided so that the license plate camera and the laser scanner are not easily disturbed greatly in rainy and snowy weather, and it is also applicable to the transformation of the existing density detection facilities.

[0030] 2. To clean the lens surface of the laser scanner placed at a certain height, so as to reduce the influence of dust and the like on the normal operation of the laser scanner. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural diagram of the present application;

[0032] Figure 2 is to Figure 1 a schematic structural diagram with the shielding shed removed in

[0033] Figure 3 is a schematic diagram of the related structure of the support column;

[0034] Figure 4 is Figure 3 an enlarged view of part A in

[0035] Description of the reference numerals: 1, weighbridge; 2, license plate camera; 3, laser scanner; 31, cleaning cloth block; 32, wiping motor; 33, height-adjusting electric cylinder; 34, high-pressure nozzle; 35, rod nozzle; 36, drying pipe; 4, vertical rod; 41, wiping assembly; 42, nozzle sliding rod; 43, atomizing nozzle; 44, spraying motor; 45, moving rod; 46, rotating part; 47, rotating motor; 48, cloth sliding rod; 49, cloth-rotating motor; 5, shielding shed; 51, front area; 52, measuring area; 53, rear area; 54, rod bottom wheel; 55, wheel rail; 56, cross frame; 57, scissor-type telescopic frame; 58, support column; 59, spraying assembly. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The following further describes the present application in detail with reference to the drawings.

[0037] The embodiment of the present application discloses a solid waste density detection device. Referring to Figure 1 and Figure 2, including a weighbridge 1 for weighing trucks, where the length direction of the weighbridge 1 is consistent with the moving direction of the trucks. At the ground on one side of the length direction of the weighbridge 1, support columns 58 are pre-buried. The support columns 58 are approximately L-shaped. A license plate camera 2 is detachably connected to the vertical section of the support column 58 to photograph the license plate of the truck and read the license plate number, so as to obtain the corresponding tare weight of the truck pre-stored in the database. Near the horizontal section of the truck, there are several laser scanners 3 arranged along the width direction of the weighbridge 1. In this embodiment, three laser scanners 3 are set to comprehensively scan a truck with a certain width to obtain the volume of solid waste.

[0038] Refer to Figure 1 and Figure 2 , on the ground on both sides of the length direction of the weighbridge 1, wheel tracks 55 are pre-buried. The length direction of the wheel tracks 55 is consistent with the length direction of the weighbridge 1. There is a row of vertical rods 4 directly above each wheel track 55. The bottom end of each row of vertical rods 4 is rotatably connected with a rod bottom wheel 54, and the rod bottom wheel 54 is rollingly connected to the wheel track 55. The upper ends of all the vertical rods 4 are detachably connected to the same shielding shed 5 made of PVC, PTFE or ETFE, and the shielding shed 5 can enclose the opposite vertical surfaces of the two rows of vertical rods 4. The bottom height of the shielding shed 5 can be within the range between the middle height and the bottom height of the vertical rods 4. All the vertical rods 4 are divided into several groups along the length direction of the weighbridge 1, with two in each group. A cross frame 56 is detachably connected between the two vertical rods 4 in the same group, and a scissor-type telescopic frame 57 is installed between adjacent cross frames 56, so that the shielding shed 5 can be retracted in extreme weather and can be moved into the room connected by the wheel tracks 55. A motor and a lead screw are arranged in the cross frame 56 to drive the scissor-type telescopic frame 57 to perform corresponding elongation and shortening actions. After all the vertical rods 4 are moved to the designated positions, the vertical rods 4 can be anchored to the surrounding ground with cables to restrict the random movement of the shielding shed 5 under medium wind intensity.

[0039] Refer to Figure 1 and Figure 2 , the internal area of the shielding shed 5 is divided into a front area 51, a measurement area 52 and a rear area 53 along the length direction of the weighbridge 1. The truck first drives into the front area 51, and the personnel on the truck can get off at this time to open the truck tarpaulin. Then the truck drives into the measurement area 52 for density detection. After the detection is completed, the truck drives into the rear area 53 and then binds the tarpaulin to facilitate more accurate density measurement of the solid waste loaded in the truck in rainy and snowy weather. On the opposite vertical surfaces of the two vertical rods 4 at the end where the truck drives into the front area 51, rod nozzles 35 are detachably connected. The rod nozzles 35 are connected to an external high-pressure water pump to form a water mist barrier at the two ends of the shielding shed 5. The rod nozzles 35 can be selectively opened according to the weather conditions, so that in dry weather, when the truck enters and exits the shielding shed 5, excessive dust is not easily raised, and the impact on the detection work is reduced as much as possible.

[0040] Refer to Figure 3 and Figure 4, a spray assembly 59 capable of spraying cleaning liquid towards the lens of the laser scanner 3 and a wiping assembly 41 for wiping the surface of the lens of the laser scanner 3 are installed on the horizontal section of the support column 58. The spray assembly 59 includes a nozzle slide rod 42 slidably connected to the horizontal section of the support column 58 along the width direction of the weighbridge 1. The nozzle slide rod 42 includes a moving rod 45 and a rotating member 46. The moving rod 45 is slidably connected to the support column 58. A spray motor 44 is detachably connected to the horizontal section of the support column 58. The output shaft of the spray motor 44 is detachably connected to a lead screw inside the support column 58 to drive the moving rod 45 to move. The rotating member 46 is rotatably connected to the end of the moving rod 45. The direction of the rotation axis of the rotating member 46 is consistent with the length direction of the weighbridge 1. A rotating motor 47 with an output shaft coaxially and detachably connected to the rotation point of the rotating member 46 is detachably connected to the moving rod 45. A mist nozzle 43 is detachably connected to one end of the rotating member 46 away from the moving rod 45. The mist nozzle 43 is connected to an external high-pressure water pump and a water tank for storing cleaning liquid through a hose to spray the cleaning liquid towards the lens of the laser scanner 3.

[0041] Refer to Figure 3 and Figure 4 , the wiping assembly 41 includes a cloth slide rod 48 slidably connected to the support column 58 along the width direction of the weighbridge 1. A wiping motor 32 is detachably connected to the horizontal section of the support column 58. The output shaft of the wiping motor 32 is detachably connected to a lead screw inside the support column 58 to drive the cloth slide rod 48 to move. Several height-adjusting electric cylinders 33 are detachably connected to the end of the cloth slide rod 48, and each height-adjusting electric cylinder 33 corresponds to a laser scanner 3. A cloth-spinning motor 49 is detachably connected to the power rod of each height-adjusting electric cylinder 33. A cleaning cloth block 31 for wiping the lens of the laser scanner 3 is detachably connected to the power rod of the cloth-spinning motor 49. The cleaning cloth block 31 can be made by adhering a dust-free cloth to the surface of a rubber block, so that the pressure between the cleaning cloth block 31 and the lens of the laser scanner 3 is not likely to be too large. And the wiping motor 32 and the height-adjusting electric cylinders 33 move according to a preset program in an external controller to ensure that each cleaning cloth block 31 can accurately correspond to the lens of a laser scanner 3 for wiping.

[0042] Refer to Figure 4, a high-pressure nozzle 34 and a drying pipe 36 are detachably connected to the connection between the horizontal section and the vertical section of the support column 58. The high-pressure nozzle 34 is connected to an external high-pressure water pump, and the drying pipe 36 is connected to an external hot air blower. Moreover, the drying pipe 36 is closer to the laser scanner 3 than the high-pressure nozzle 34. When starting the cleaning, the cleaning cloth block 31 first moves past the high-pressure nozzle 34 so that the high-pressure nozzle 34 can spray a high-pressure water column to wash the surface of the cleaning cloth block 31 during rotation. Then, when the cleaning cloth block 31 moves to the position of the drying pipe 36, it is blown by the hot air flow and rotates at a relatively high speed so that the cleaning cloth block 31 is dried. Then, the cleaning cloth block 31 wipes the lens of the laser scanner 3 after the cleaning liquid is sprayed. Also, the height-adjusting electric cylinder 33 and the cloth-rotating motor 49 are selected to be waterproof. At the same time, during the cleaning and drying process of the cleaning cloth block 31, the power rod of the height-adjusting electric cylinder 33 extends and the cloth-rotating motor 49 keeps running.

[0043] The implementation principle of a solid waste density detection device according to an embodiment of the present application is as follows: The truck sequentially passes through the front area 51, the measurement area 52, and the rear area 53, so that rainwater or snowflakes are not likely to enter the carriage during the density measurement, and it will not hinder the measurement work of the laser scanner 3, thereby reducing the influence on the density measurement.

[0044] The above are all preferred embodiments of the present application. The protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A solid waste density detection device, comprising a floor scale (1) for weighing a truck, a license plate camera (2) for identifying the truck license plate number to obtain the truck tare weight and the length, width and height parameters of the truck compartment, and a plurality of laser scanners (3) for detecting and calculating the height of the solid waste loaded in the truck compartment, characterized in that: There are a row of upright poles (4) on both sides of the floor scale (1), and a shielding shed (5) is detachably connected between the upper parts of the two rows of upright poles (4) and on the opposite surfaces thereof, and the floor scale (1), the license plate camera (2) and the laser scanner (3) are all located directly below the shielding shed (5).

2. A solid waste density detection device according to claim 1, characterized in that: The area directly below the shielding shed (5) includes a front area (51), a measuring area (52) and a rear area (53) in sequence in accordance with the forward direction of the truck during density detection. The front area (51), the measuring area (52) and the rear area (53) are all completely accessible to trucks, and the weighbridge (1) is located in the measuring area (52).

3. A solid waste density detection device according to claim 1, characterized in that: The bottom end of the vertical pole (4) is rotatably connected to a pole bottom wheel (54), and both sides of the floor scale (1) are provided with wheel rails (55) pre-buried in the ground and capable of rotating the pole bottom wheel (54). The manufacturing material of the shelter (5) includes any one or more of PVC, PTFE and ETFE.

4. A solid waste density detection device according to claim 3, characterized in that: All the upright poles (4) are divided into groups of two along the forward moving direction of the truck during detection, and each group has two upright poles. A cross frame (56) is detachably connected between two upright poles (4) in the same group, and a scissor-type telescopic frame (57) is installed between two adjacent cross frames (56).

5. A solid waste density detection device according to claim 1, characterized in that: A support column (58) for mounting the license plate camera (2) and the laser scanner (3) is provided around the floor scale (1), and the support column (58) is provided with a spray assembly (59) capable of spraying a cleaning liquid toward the lens of the laser scanner (3) and a wiping assembly (41) for wiping the surface of the lens of the laser scanner (3).

6. A solid waste density detection device according to claim 5, characterized in that: The spray assembly (59) comprises a nozzle slide bar (42) slidably connected to a support column (58) along the width direction of the floor scale (1), an atomizing nozzle (43) detachably connected to the nozzle slide bar (42) and capable of spraying a cleaning liquid, and a spray motor (44) disposed on the support column (58) and driving the nozzle slide bar (42) to move.

7. A solid waste density detection device according to claim 6, characterized in that: The nozzle slide bar (42) comprises a movable rod (45) slidably connected to a support column (58), a rotating member (46) rotatably connected to the movable rod (45) and for detachably connecting the atomizing nozzle (43), and a rotating motor (47) detachably connected to the movable rod (45) and driving the rotating member (46) to rotate, wherein the rotating axis direction of the rotating member (46) is perpendicular to the connecting direction of all the laser scanners (3).

8. A solid waste density detection device according to claim 5, characterized in that: The wiping assembly (41) comprises a cloth slide bar (48) slidably connected to a support column (58) along the width direction of the floor scale (1), a plurality of cloth rotating motors (49) moving along with the cloth slide bar (48), a cleaning cloth block (31) driven by the cloth rotating motor (49) to rotate so as to wipe the lens of the laser scanner (3), a wiping motor (32) driving the cloth slide bar (48) to move, and a height adjustment electric cylinder (33) driving the cloth rotating motor (49) to change the height, wherein one cloth rotating motor (49) is provided for each laser scanner (3).

9. A solid waste density detection device according to claim 8, characterized in that: A high-pressure nozzle (34) capable of spraying water toward the cleaning cloth block (31) and a drying pipe (36) capable of delivering hot air flow toward the cleaning cloth block (31) are detachably connected to the support column (58) at a position away from the laser scanner (3).

10. A solid waste density detection device according to claim 1, characterized in that: The vertical pole (4) at one end of the shelter (5) for trucks to drive into is detachably connected to a pole nozzle (35) capable of forming a water mist barrier.

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