Asphalt production material conveying system

Abstract

The utility model discloses an asphalt production material conveying system which comprises a PLC (programmable logic controller), a base, a first rack, a second rack, a waste bag packing device and a plurality of groups of motors. According to the utility model, a whole set of operation system from material carrying to material adding and metering is adopted, so that the automation of asphalt production material adding is realized, the labor intensity in the asphalt production process is reduced, and the integrated work of automatic grabbing, crushing, transportation, metering, adding and the like is realized; the crusher is combined with the roller screen to crush and screen materials, the mechanical arm automatically calculates the weight according to the bag number of the grabbed materials and completes first-stage metering, and the weighing sensor is arranged in the buffer hopper to complete second-stage metering of the materials and feed back to the PLC. The PLC controls the feeding amount of the materials through cooperation of the spiral feeder and the powder metering pump, three-level metering of material transportation is completed, and therefore accurate adding of the materials is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt production, in particular to an asphalt production material conveying system. Background Art

[0002] At present, with the development of highways in my country, the quantity and quality requirements of road petroleum asphalt are getting higher and higher. Now it is necessary to continuously add asphalt modifiers in asphalt production, and stabilizers need to be added after the asphalt enters the development tank for a period of time. In the transportation process of asphalt modifiers, stabilizers and other materials, most of the traditional methods such as manual handling, on-site unpacking, and manual weighing are used to achieve the quantitative replenishment and transportation of materials during asphalt production. It is impossible to guarantee the production capacity and quality of asphalt, and even lead to waste of resources. The disadvantages are: the production process is time-consuming and labor-intensive, the labor intensity is high, the production volume is limited and cannot keep up with market demand, the material addition cannot be accurately added according to the formula, resulting in no guarantee of product quality, the dust is high when the material is unpacked, resulting in a poor working environment, and the material is prone to agglomeration, resulting in insufficient dissolution in the asphalt. In order to solve the above defects, it is necessary to develop an automated asphalt production material conveying system. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art and proposes an asphalt production material conveying system.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an asphalt production material conveying system, comprising a PLC controller, a base, a first frame, a second frame, a waste bag packaging device and a plurality of motors, wherein the base, the first frame, the second frame and the waste bag packaging device are arranged in sequence from right to left, a mechanical arm for grabbing material bags is arranged on the upper wall of the base, a clamping mechanism for grabbing is arranged on the end of the mechanical arm away from the base, the mechanical arm is a six-degree-of-freedom manipulator, a conveyor belt for conveying material bags is arranged on the upper wall of the first frame, an automatic bag unpacking machine and a crushing and screening box are arranged in sequence on the upper end of the second frame from top to bottom, and one end of the conveyor belt toward the second frame is connected to the automatic bag unpacking machine. The waste bag packaging device is arranged on the side of the automatic unpacking machine away from the conveyor belt, the crushing and screening box is provided with a crushing and screening assembly for crushing and screening materials, the lower wall of the crushing and screening box is fixedly connected with a cache hopper located inside the second frame, the lower wall of the inner wall of the cache hopper is provided with a weighing measurement sensor, the second frame is fixedly connected with a support plate on the side away from the conveyor belt, the lower wall of the support plate is fixedly connected with a discharge pipe, a screw feeder for transferring materials is arranged between the support plate and the cache hopper, the inlet of the screw feeder is fixedly connected to the outlet of the cache hopper, and the end of the screw feeder away from the cache hopper is connected to the discharge pipe through a discharge metering structure.

[0005] As a further description of the above technical solution:

[0006] The clamping mechanism comprises a negative pressure adsorption device and a mechanical clamping claw.

[0007] As a further description of the above technical solution:

[0008] A binocular industrial camera is arranged at one end of the mechanical arm away from the base and above the clamping mechanism.

[0009] As a further description of the above technical solution:

[0010] The crushing and screening assembly includes a crusher and a roller screen. The roller screen is rotatably connected to the inner wall of the crushing and screening box. An opening that passes through the crushing and screening box from top to bottom is provided between the crushing and screening box and the buffer hopper. The roller screen is located above the opening. The crusher is fixedly connected to the inner wall of the crushing and screening box through a bracket and is located on the right side of the roller screen. An inlet is provided on the upper wall of the crusher and the inlet is opposite to the material outlet of the automatic unpacking machine from top to bottom. A discharge hopper for discharging materials is provided at the lower end of the crusher, and the end of the discharge hopper away from the crusher passes through the right wall of the roller screen and extends into the interior of the roller screen.

[0011] As a further description of the above technical solution:

[0012] The inner side wall of the spiral feeder is rotatably connected with an auger blade via a rotating shaft.

[0013] As a further description of the above technical solution:

[0014] The discharge metering structure is connected to a powder metering pump, which is fixedly connected to the upper wall of the pallet, and the inlet end of the powder metering pump is fixedly connected to the outlet of the screw feeder. The end of the discharge pipe facing the pallet passes through the inner wall of the pallet and extends above the pallet, and the end of the discharge pipe extending above the pallet is fixedly connected to the outlet of the powder metering pump.

[0015] The utility model has the following beneficial effects:

[0016] 1. Compared with the existing technology, the asphalt production material conveying system has a complete set of operating systems from material handling to material addition and metering, which realizes the automation of asphalt production material addition, realizes continuous labor, and meets the market order requirements;

[0017] 2. Compared with the existing technology, the asphalt production material conveying system has reduced the intensity of manual labor in the asphalt production process and realized the integrated work of automated grabbing, crushing, transportation, metering, and adding. The crusher combined with the roller screen can crush and screen the materials, which can prevent the agglomerated materials from being transferred to the subsequent processes.

[0018] 3. Compared with the existing technology, the asphalt production material conveying system has a mechanical arm that automatically calculates the weight according to the number of material bags grabbed to complete the first-level measurement. A weighing sensor is installed in the buffer bucket to complete the second-level measurement of the material and feedback to the PLC controller. When asphalt is produced, the PLC controller controls the material feed amount through the screw feeder and the powder metering pump to complete the third-level measurement of material transportation, thereby realizing the precise addition of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of an asphalt production material conveying system proposed by the utility model;

[0020] Figure 2 The utility model proposes a material conveying system for asphalt production Figure 1 A partial enlarged view of the middle A;

[0021] Figure 3 This is a partial cross-sectional view of the internal structure of a crushing and screening box of an asphalt production material conveying system proposed by the utility model;

[0022] Figure 4 This is a partial cross-sectional view of the internal structure of a screw feeder of an asphalt production material conveying system proposed by the utility model.

[0023] Legend:

[0024] 1. Base; 2. Robotic arm; 3. Clamping mechanism; 4. Binocular industrial camera; 5. First frame; 6. Conveyor belt; 7. Second frame; 8. Crushing and screening box; 9. Automatic unpacking machine; 10. Buffer hopper; 11. Screw feeder; 12. Pallet; 13. Powder metering pump; 14. Discharge pipe; 15. Crusher; 16. Discharge hopper; 17. Rolling screen; 18. Rotating shaft; 19. Auger blade. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Reference Figures 1 to 4The utility model provides an asphalt production material conveying system: including a PLC controller, a base 1, a first frame 5, a second frame 7, a waste bag packing device and multiple motors. The base 1, the first frame 5, the second frame 7 and the waste bag packing device are arranged from right to left in sequence. The waste bag packing device is a fully automatic horizontal hydraulic baler commonly seen on the market. The waste bags after unpacking and unloading by the automatic unpacking machine 9 are transported to the waste bag packing device through the conveyor belt inside the automatic unpacking machine 9, which is convenient for environmentally friendly recycling of the waste bags.

[0027] like Figure 1 , Figure 2 As shown, in order to achieve stable grasping of materials, a mechanical arm 2 for grasping material bags is arranged on the upper wall of the base 1, and a clamping mechanism 3 for grasping is arranged at one end of the mechanical arm 2 away from the base 1. The mechanical arm 2 is a six-degree-of-freedom manipulator, and the clamping mechanism 3 includes a negative pressure adsorption device and a mechanical clamping claw. A binocular industrial camera 4 is arranged at one end of the mechanical arm 2 away from the base 1 and above the clamping mechanism 3. The stack of packaged materials is placed within the grasping range of the mechanical arm 2, and the binocular industrial camera 4 equipped on the mechanical arm 2 recognizes the placement of the material bags on the stack; the end posture of the mechanical arm 2 is controlled by the PLC controller, and the negative pressure adsorption device and the mechanical clamping claw are used to perform negative pressure adsorption and claw grasping to complete the grasping of the material bag;

[0028] like Figure 1 As shown, in order to facilitate the transportation of the material packages, a conveyor belt 6 for conveying the material packages is provided on the upper wall of the first frame 5, and the material packages are transported to the automatic unpacking machine 9 via the conveyor belt 6;

[0029] like Figure 1 , Figure 3As shown, in order to unpack and crush the material bags, an automatic unpacking machine 9 and a crushing and screening box 8 are arranged in sequence on the upper end of the second frame 7 from top to bottom. The end of the conveyor belt 6 facing the second frame 7 is connected to the inlet of the automatic unpacking machine 9. The waste bag packing device is arranged on the side of the automatic unpacking machine 9 away from the conveyor belt 6. A crushing and screening assembly for crushing and screening the material is arranged inside the crushing and screening box 8. The crushing and screening assembly includes a crusher 15 and a rolling screen 17. The rolling screen 17 is rotatably connected to the inner side wall of the crushing and screening box 8. An opening that runs through from top to bottom is arranged between the crushing and screening box 8 and the buffer hopper 10. The rolling screen 17 is located above the opening. The crusher 15 is fixedly connected to the crushing and screening box 8 through a bracket. The inner wall is located on the right side of the rolling screen 17. The upper wall of the crusher 15 is provided with an inlet, and the inlet is opposite to the material outlet of the automatic unpacking machine 9 in the upper and lower parts. The lower end of the crusher 15 is provided with a discharge hopper 16 for discharging materials. The end of the discharge hopper 16 away from the crusher 15 passes through the right wall of the rolling screen 17 and extends into the inside of the rolling screen 17. After the material package is sent to the automatic unpacking machine 9, the bag breaking blade at the entrance of the automatic unpacking machine 9 tears the packaging bag, and the material is discharged downward. The material passes through the crusher 15, and the large agglomerated materials are broken into small pieces and sent to the rolling screen 17. The rolling screen 17 continuously screens and rolls the crushed small block materials until they are broken into suitable sizes, fall from the mesh of the rolling screen 17, and are stored in the buffer hopper 10;

[0030] like Figure 1 As shown, a cache hopper 10 is fixedly connected to the lower wall of the crushing and screening box 8 and located inside the second frame 7. A weighing measurement sensor is provided on the lower inner wall of the cache hopper 10. The weighing measurement sensor is used to detect the material level information inside the cache hopper 10 and provide it to the PLC controller to control the working speed of the previous and next processes;

[0031] like Figure 1 , Figure 4As shown, in order to send out the crushed and screened materials in the buffer hopper 10, a support plate 12 is fixedly connected to the side of the second frame 7 away from the conveyor belt 6, and a discharge pipe 14 is fixedly connected to the lower wall of the support plate 12. A screw feeder 11 for transferring materials is arranged between the support plate 12 and the buffer hopper 10. The inlet of the screw feeder 11 is fixedly connected to the outlet of the buffer hopper 10, and the end of the screw feeder 11 away from the buffer hopper 10 is connected to the discharge pipe 14 through a discharge metering structure. The inner wall of the screw feeder 11 is rotatably connected to a screw feeder 11 through a rotating shaft 18. Dragon blades 19, the discharge metering structure is connected to a powder metering pump 13, the powder metering pump 13 is fixedly connected to the upper wall of the support plate 12, the inlet end of the powder metering pump 13 is fixedly connected to the outlet of the screw feeder 11, and the end of the discharge pipe 14 facing the support plate 12 passes through the inner wall of the support plate 12 and extends to the top of the support plate 12, and the end of the discharge pipe 14 extending to the top of the support plate 12 is fixedly connected to the outlet of the powder metering pump 13. When feeding asphalt, the material is sent out from the powder metering pump 13 and mixed with the asphalt, and the weight of the added material is accurately controlled by the powder metering pump 13.

[0032] Working principle: The packaged material stack is placed within the grasping range of the robot arm 2. The binocular industrial camera 4 equipped on the robot arm 2 recognizes the placement of the material packages on the stack. The PLC controller controls the terminal posture of the robot arm 2, and the negative pressure adsorption device and the mechanical gripper are used to perform negative pressure adsorption and claw grasping to complete the grasping of the material package. The material package is transported to the automatic unpacking machine 9 via the conveyor belt 6. After the material package is sent to the automatic unpacking machine 9, the bag-breaking blade at the entrance of the automatic unpacking machine 9 tears the packaging bag and discharges the material downward. The material passes through the crusher 15 and is Large agglomerated materials are broken into small pieces and sent to the rolling screen 17. The rolling screen 17 continuously screens and rolls the crushed small block materials until they are broken into suitable sizes, fall from the screen mesh of the rolling screen 17, and are stored in the buffer hopper 10. The waste bag packaging device is a fully automatic horizontal hydraulic baler commonly seen on the market. The waste bags unpacked and unloaded by the automatic unpacking machine 9 are transported to the waste bag packaging device through the conveyor belt inside the automatic unpacking machine 9, which is convenient for the environmentally friendly recycling of the waste bags. When feeding asphalt, the material is sent out from the powder metering pump 13 to mix with the asphalt, and the powder metering pump 13 is used to accurately control the weight of the added material.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An asphalt production material conveying system, characterized by: The machine comprises a PLC controller, a base (1), a first frame (5), a second frame (7), a waste bag packing device and a plurality of motors, wherein the base (1), the first frame (5), the second frame (7) and the waste bag packing device are arranged in sequence from right to left, the upper wall of the base (1) is provided with a mechanical arm (2) for grabbing a material bag, the end of the mechanical arm (2) away from the base (1) is provided with a clamping mechanism (3) for grabbing, the mechanical arm (2) is a six-degree-of-freedom manipulator, the upper wall of the first frame (5) is provided with a conveyor belt (6) for conveying the material bag, the upper end of the second frame (7) is provided with an automatic packing machine (9) and a crushing and screening box (8) in sequence from top to bottom, the end of the conveyor belt (6) facing the second frame (7) is connected to the inlet of the automatic packing machine (9), and the waste bag packing device is arranged on the automatic packing machine (9) ) is located at a side away from the conveyor belt (6), a crushing and screening assembly for crushing and screening materials is arranged inside the crushing and screening box (8), a cache hopper (10) is fixedly connected to the lower wall of the crushing and screening box (8) and located inside the second frame (7), a weighing measurement sensor is arranged on the lower wall of the inner side wall of the cache hopper (10), a support plate (12) is fixedly connected to the side of the second frame (7) away from the conveyor belt (6), a discharge pipe (14) is fixedly connected to the lower wall of the support plate (12), a screw feeder (11) for transferring materials is arranged between the support plate (12) and the cache hopper (10), an inlet of the screw feeder (11) is fixedly connected to an outlet of the cache hopper (10), and an end of the screw feeder (11) away from the cache hopper (10) is connected to the discharge pipe (14) via a discharge metering structure.

2. The asphalt production material conveying system according to claim 1, characterized in that: The clamping mechanism (3) comprises a negative pressure adsorption device and a mechanical clamping claw.

3. The asphalt production material conveying system according to claim 2, characterized in that: A binocular industrial camera (4) is provided at one end of the mechanical arm (2) away from the base (1) and located above the clamping mechanism (3).

4. The asphalt production material conveying system according to claim 3, characterized in that: The crushing and screening assembly comprises a crusher (15) and a rolling screen (17). The rolling screen (17) is rotatably connected to the inner wall of the crushing and screening box (8). An opening that passes through the crushing and screening box (8) and the buffer hopper (10) is provided between the crushing and screening box (8) and the buffer hopper (10). The rolling screen (17) is located above the opening. The crusher (15) is fixedly connected to the inner wall of the crushing and screening box (8) through a bracket and is located on the right side of the rolling screen (17). An inlet is provided on the upper wall of the crusher (15) and the inlet is vertically opposite to the material outlet of the automatic unpacking machine (9). A discharge hopper (16) for discharging materials is provided at the lower end of the crusher (15). The end of the discharge hopper (16) away from the crusher (15) passes through the right wall of the rolling screen (17) and extends into the interior of the rolling screen (17).

5. The asphalt production material conveying system according to claim 4, characterized in that: The inner side wall of the screw feeder (11) is rotatably connected to an auger blade (19) via a rotating shaft (18).

6. The asphalt production material conveying system according to claim 5, characterized in that: The discharge metering structure is connected to a powder metering pump (13), the powder metering pump (13) is fixedly connected to the upper wall of the support plate (12), the inlet end of the powder metering pump (13) is fixedly connected to the outlet of the screw feeder (11), the end of the discharge pipe (14) facing the support plate (12) penetrates the inner wall of the support plate (12) and extends above the support plate (12), and the end of the discharge pipe (14) extending above the support plate (12) is fixedly connected to the outlet of the powder metering pump (13).

Images