Automatic concrete blending equipment

Abstract

The utility model discloses automatic concrete blending equipment, and relates to the technical field of concrete equipment. The device comprises a supporting frame, and one side of the supporting frame is fixedly connected with a controller. According to the device, the storage bin, the weighing hopper, the shaking assembly, the mixing assembly and the conveying assembly are arranged, raw materials in the storage bin are poured into the weighing hopper according to site conditions, then the weights of different raw materials are accurately weighed through a weight sensor, in addition, through operation of the shaking assembly, it is ensured that the raw materials can uniformly and continuously enter the weighing hopper, and the mixing efficiency is improved. Then, the mixing assembly can be started to run to fully and uniformly stir and mix the raw materials, finally, the stirred and mixed concrete is poured into the conveying assembly, and the concrete is conveyed to a designated position through the conveying assembly, so that the whole blending operation is completed; the concrete blending precision and stability are greatly improved, and the device can be suitable for concrete blending tasks of different scenes and requirements.

Description

Technical Field

[0001] This application relates to the technical field of concrete equipment, and in particular to a concrete automatic batching equipment. Background Art

[0002] Concrete batching is to meet the structural safety and construction requirements of specific projects. By adjusting the proportions of cement, aggregates, admixtures, and water, it ensures that the concrete has the required strength, durability, and technological properties. Reasonable batching not only concerns the construction quality but also affects the construction efficiency and cost.

[0003] In an existing Chinese patent (authorization publication number: CN115674442U), a concrete batching device and method for water conservancy projects are mentioned, including a support bottom plate. A mixing tank is fixedly connected to the upper surface of the support bottom plate. One end of the mixing tank away from the support bottom plate is fixedly connected to an upper cover plate. Feeding hoppers are symmetrically and fixedly connected to the upper surface of the upper cover plate. A discharge pipe is inserted into one side of the mixing tank, and a water inlet pipe is inserted into one side of the upper cover plate. In the present invention, through the mutual cooperation between the adjustment mechanism and the equipment mechanism, the problem of uneven mixing of the equipment is solved. Also, through the mutual cooperation between the support rod and the adjustment cylinder, the mixing radii and mixing positions of the first mixing blade and the second mixing blade are continuously changed. Therefore, the mixing effect of the equipment is improved from two aspects of changing the mixing radius and the mixing position, which helps the concrete inside the equipment to be mixed more evenly and improves the processing efficiency of the equipment.

[0004] In the above patent, the mixing effect of the equipment is improved by changing the mixing radius and the mixing position. However, in actual use, when batching concrete raw materials, most of them require manual operation, resulting in low batching efficiency and difficult to guarantee the batching accuracy. It is impossible to flexibly adjust the concrete ratio according to the actual situation at the construction site, leading to unstable quality of the batched concrete. Therefore, this application provides a concrete automatic batching equipment. Utility Model Content

[0005] The purpose of this application is to solve the problem that when batching concrete raw materials, most of them require manual operation, resulting in low batching efficiency and difficult to guarantee the batching accuracy. It is impossible to flexibly adjust the concrete ratio according to the actual situation at the construction site, leading to unstable quality of the batched concrete. This application provides a concrete automatic batching equipment.

[0006] This application specifically adopts the following technical solutions to achieve the above purpose:

[0007] An automatic concrete mixing equipment, including a support frame, one side of the support frame is fixedly connected with a controller, the top of the support frame is installed with a plurality of storage bins, the bottoms of the plurality of storage bins are fixedly connected with feeding hoses, the support frame is installed with a plurality of weighing hoppers, the plurality of weighing hoppers are respectively located at the bottoms of the plurality of storage bins, the support frame is installed with a jitter component, the support frame is installed with a mixing component, the mixing component is located at the bottoms of the plurality of weighing hoppers, the support frame is installed with a conveying component, and the conveying component is located at the bottom of the mixing component.

[0008] By adopting the above technical solutions, according to the required amount on site, the raw materials are poured into different weighing hoppers in sequence. Each weighing hopper accurately weighs the weight of different raw materials. At the same time, during the feeding process of the storage bin, the jitter component can be started to operate to continuously jitter the feeding hose to ensure that the raw materials can enter the weighing hopper evenly and continuously. When the plurality of weighing hoppers are filled with the raw materials of accurate weight, the weighed raw materials are guided into the mixing component, and then the mixing component is started to operate to fully and evenly stir and mix the raw materials. Finally, the mixed concrete is poured onto the conveying component, and the conveying component conveys the concrete to the designated position to complete the entire mixing operation. Through the mutual cooperation of multiple devices, the mixing accuracy and stability of the concrete are greatly improved, making the device applicable to the concrete mixing tasks of different scenarios and requirements.

[0009] Further, fixed plates are symmetrically and fixedly connected to both sides of the plurality of weighing hoppers. A pull ring is fixedly connected to the top of the fixed plate. One end of the pull ring is fixedly connected with a weight sensor. The weight sensor is electrically connected to the controller. Guide pipes are fixedly connected to the bottoms of the plurality of weighing hoppers. A pneumatic valve I is fixedly connected to the guide pipe. The weight sensor and the guide pipe are both electrically connected to the controller.

[0010] By adopting the above technical solutions, the weight sensors on each weighing hopper accurately weigh the weights of different raw materials. At the same time, the controller can accurately control the opening and closing time of the pneumatic valve I to further ensure the accuracy of weighing.

[0011] Further, the jitter component includes two guide rods symmetrically and fixedly connected inside the support frame. A plurality of sliders are slidably connected to both guide rods. A plurality of the feeding hoses all penetrate through the sliders. Springs are symmetrically and fixedly connected to the opposite surfaces of the plurality of sliders. A driving member is arranged at one end of the plurality of sliders.

[0012] By adopting the above technical solutions, the driving member drives a plurality of sliders to move horizontally and shake on the guide rods according to the guidance of the guide rods, thereby pulling the plurality of springs to stretch and rebound, driving the feeding hose to continuously jitter, to ensure that the raw materials can enter the weighing hopper evenly and continuously.

[0013] Further, the driving member includes a connecting plate fixedly connected to one end of a plurality of sliders. One side of the connecting plate is fixedly connected with a vibration motor, and the vibration motor is electrically connected to the controller.

[0014] By adopting the above technical solution, the continuous operation of the vibration motor can continuously vibrate and knock the connecting plate, causing the connecting plate to continuously shake.

[0015] Further, the mixing assembly includes a mixing bin fixedly connected inside the support frame. Two stirring rods are symmetrically and rotatably connected through the inside of the mixing bin. Two motors I are symmetrically and fixedly connected to one side of the support frame. The output ends of the two motors I are respectively fixedly connected to one end of the two stirring rods. A plurality of stirring blades are uniformly fixedly connected to the two motors I, and the two motors I are electrically connected to the controller.

[0016] By adopting the above technical solution, through the cooperation of the two stirring rods and the plurality of stirring blades, it can be ensured that the concrete raw materials can be fully and evenly mixed.

[0017] Further, scraping blades are fixedly connected to both ends of the plurality of stirring blades. A discharge pipe is fixedly connected to the bottom of the mixing bin, and a pneumatic valve II is fixedly connected to the discharge pipe.

[0018] By adopting the above technical solution, the scraping blades at both ends can scrape the inner wall of the mixing bin to prevent the concrete from adhering to the inner wall of the mixing bin, causing waste of resources.

[0019] Further, a humidity sensor is fixedly connected to the discharge pipe, and both the pneumatic valve II and the humidity sensor are electrically connected to the controller.

[0020] By adopting the above technical solution, the humidity sensor can be used to detect parameters such as the humidity and density of the concrete in real time and feed these parameters back to the controller so as to timely adjust the ratio of subsequent raw materials and the mixing time.

[0021] Further, the conveying assembly includes two transmission shafts symmetrically and rotatably connected inside the support frame. A motor II is fixedly connected to one side of the support frame. The output end of the motor II is fixedly connected to one end of one of the transmission shafts. A conveyor belt is rotatably arranged on the two transmission shafts, and baffles are symmetrically fixedly connected to the conveyor belt.

[0022] By adopting the above technical solution, starting the motor II to operate to drive the transmission shaft to rotate will drive the concrete on the conveyor belt to be conveyed to a designated position. The baffles on both sides of the conveyor belt can intercept and limit the concrete, preventing the concrete from overflowing outside the conveyor belt and reducing waste of resources.

[0023] In summary, the present application includes at least one of the following beneficial effects:

[0024] 1. In the present application, a storage bin, a weighing hopper, a shaking assembly, a mixing assembly, and a conveying assembly are provided. According to the on-site situation, the raw materials inside the storage bin are poured into the weighing hopper, and then the weights of different raw materials are accurately weighed by weight sensors. In addition, through the operation of the shaking assembly, it is ensured that the raw materials can enter the weighing hopper evenly and continuously. Subsequently, the mixing assembly can be started to operate to fully and evenly stir and mix the raw materials. Finally, the mixed concrete is poured onto the conveying assembly, and the concrete is conveyed to the designated position by the conveying assembly, thus completing the entire mixing operation. Through the mutual cooperation of multiple devices, the mixing accuracy and stability of the concrete are greatly improved, making the device applicable to concrete mixing tasks in different scenarios and requirements.

[0025] 2. In the present application, a controller is provided. Through the controller, the raw material ratio and mixing process can be automatically optimized according to historical data and parameters of real-time feedback to improve the quality and stability of the concrete. At the same time, the controller also has the functions of remote monitoring and debugging, facilitating users to monitor and adjust the equipment at any time and anywhere. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a three-dimensional structural schematic diagram of the device main body in the present application.

[0027] Figure 2 is a three-dimensional structural schematic diagram of the shaking assembly in the present application.

[0028] Figure 3 is a three-dimensional structural schematic diagram of the mixing assembly in the present application.

[0029] Figure 4 is a three-dimensional structural schematic diagram of the conveying assembly in the present application.

[0030] DESCRIPTION OF THE REFERENCE NUMERALS:

[0031] 1, support frame; 2, controller; 3, storage bin; 4, feeding hose; 5, weighing hopper; 6, shaking assembly; 7, mixing assembly; 8, conveying assembly; 51, fixing plate; 52, pull ring; 53, weight sensor; 54, guiding pipe; 55, pneumatic valve I; 61, guiding rod; 62, slider; 63, spring; 64, connecting plate; 65, vibration motor; 71, mixing chamber; 72, stirring rod; 73, motor I; 74, stirring blade; 75, scraper; 76, discharge pipe; 77, pneumatic valve II; 78, humidity sensor; 81, transmission shaft; 82, motor II; 83, conveyor belt; 84, baffle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following is combined with the attached Figures 1-4Further detailed description of the present application is provided below.

[0033] An embodiment of the present application discloses an automatic concrete batching equipment.

[0034] Refer to Figure 1 , an automatic concrete batching equipment, comprising a support frame 1, a controller 2 is fixedly connected to one side of the support frame 1, a plurality of storage bins 3 are installed on the top of the support frame 1, a feeding hose 4 is fixedly connected to the bottom of each of the plurality of storage bins 3, a plurality of weighing hoppers 5 are installed on the support frame 1, the plurality of weighing hoppers 5 are respectively located at the bottom of the plurality of storage bins 3, a shaking assembly 6 is installed on the support frame 1, a mixing assembly 7 is installed on the support frame 1, the mixing assembly 7 is located at the bottom of the plurality of weighing hoppers 5, a conveying assembly 8 is installed on the support frame 1, the conveying assembly 8 is located at the bottom of the mixing assembly 7, fixing plates 51 are symmetrically and fixedly connected to both sides of each of the plurality of weighing hoppers 5, a pull ring 52 is fixedly connected to the top of the fixing plate 51, one end of the pull ring 52 is fixedly connected to a weight sensor 53, the weight sensor 53 is electrically connected to the controller 2, a guiding pipe 54 is fixedly connected to the bottom of each of the plurality of weighing hoppers 5, a pneumatic valve 55 is fixedly connected to the guiding pipe 54, and both the weight sensor 53 and the guiding pipe 54 are electrically connected to the controller 2.

[0035] During use, first, raw materials such as water, cement, and aggregates are respectively loaded into the interiors of the plurality of storage bins 3. Subsequently, according to the required usage amount on-site, the raw materials are sequentially poured into different weighing hoppers 5. The weight sensors 53 on each weighing hopper 5 are used to accurately weigh the weights of different raw materials. At the same time, during the feeding process of the storage bins 3, the shaking assembly 6 can be started to operate to continuously shake the feeding hose 4 to ensure that the raw materials can enter the weighing hoppers 5 evenly and continuously. When the plurality of weighing hoppers 5 are filled with raw materials of accurate weights, the pneumatic valve 55 can be opened through the controller 2, and the weighed raw materials are guided through the guiding pipe 54 into the mixing assembly 7. At the same time, the controller 2 can accurately control the opening and closing time of the pneumatic valve 55 to further ensure the accuracy of weighing. When all different raw materials enter the mixing assembly 7, the mixing assembly 7 can be started to operate to fully and evenly stir and mix the raw materials. Finally, the stirred and mixed concrete is poured onto the conveying assembly 8, and the concrete is conveyed to the designated position through the conveying assembly 8 to complete the entire batching operation. Additionally, during the equipment batching process, the controller 2 can automatically optimize the raw material ratio and mixing process according to historical data and real-time feedback parameters to improve the quality and stability of the concrete. At the same time, the controller 2 also has remote monitoring and debugging functions, facilitating users to monitor and adjust the equipment anytime and anywhere. Through the mutual cooperation of multiple devices, the batching accuracy and stability of the concrete are greatly improved, enabling the device to be applicable to concrete batching tasks in different scenarios and requirements.

[0036] Refer to Figure 1 andFigure 2 The jitter component 6 includes two guide rods 61 symmetrically and fixedly connected inside the support frame 1. A plurality of sliders 62 are slidably connected to both of the two guide rods 61. A plurality of feeding hoses 4 all penetrate inside the sliders 62. Symmetrically and fixedly connected to the opposite surfaces of the plurality of sliders 62 are a plurality of springs 63. One end of the plurality of sliders 62 is provided with a driving member. The driving member includes a connecting plate 64 fixedly connected to one end of the plurality of sliders 62. On one side of the connecting plate 64 is fixedly connected a vibration motor 65. The vibration motor 65 is electrically connected to the controller 2.

[0037] During use, first start the vibration motor 65 to operate. Through the operation of the vibration motor 65, the connecting plate 64 can be continuously vibrated and knocked, causing the connecting plate 64 to continuously jitter. When the connecting plate 64 jitters, it will drive a plurality of sliders 62 to move horizontally and shake on the guide rods 61 under the guidance of the guide rods 61, thereby pulling a plurality of springs 63 to stretch and rebound. Through the mutual cooperation of the plurality of springs 63 and the vibration motor 65, the feeding hoses 4 can be driven by the plurality of sliders 62 to continuously jitter, so as to ensure that the raw materials can enter the weighing hopper 5 evenly and continuously.

[0038] Refer to Figure 1 and Figure 3 The mixing component 7 includes a mixing bin 71 fixedly connected inside the support frame 1. Two stirring rods 72 are symmetrically and rotatably connected through the inside of the mixing bin 71. On one side of the support frame 1 are symmetrically and fixedly connected two motors 73. The output ends of the two motors 73 are respectively fixedly connected to one end of the two stirring rods 72. A plurality of stirring blades 74 are evenly fixedly connected to the two motors 73. The two motors 73 are electrically connected to the controller 2. Scrapers 75 are fixedly connected to both ends of the plurality of stirring blades 74. A discharge pipe 76 is fixedly connected to the bottom of the mixing bin 71. An air-operated valve 77 is fixedly connected to the discharge pipe 76. A humidity sensor 78 is fixedly connected to the discharge pipe 76. The air-operated valve 77 and the humidity sensor 78 are both electrically connected to the controller 2.

[0039] During use, first start the operation of two motors 73 to drive the rotation of two stirring rods 72. When the two stirring rods 72 rotate, they will drive the rotation of multiple stirring blades 74, so as to stir the raw materials inside the mixing bin 71. Through the cooperation of the two stirring rods 72 and the multiple stirring blades 74, it can be ensured that the concrete raw materials can be fully and evenly mixed. In addition, when the multiple stirring blades 74 rotate, they will also drive the scrapers 75 at both ends to rotate together. The inner wall of the mixing bin 71 can be scraped by the scrapers 75 at both ends to prevent the concrete from adhering to the inner wall of the mixing bin 71 and causing waste of resources. When the concrete raw materials are fully stirred, the pneumatic valve 77 can be opened through the controller 2, and the stirred concrete can be discharged through the discharge pipe 76. At this time, the humidity sensor 78 can detect the parameters such as the humidity and density of the concrete in real time and feed these parameters back to the controller 2 to adjust the ratio of subsequent raw materials and the stirring time in a timely manner.

[0040] Refer to Figure 1 and Figure 4 , the conveying assembly 8 includes two transmission shafts 81 symmetrically and rotatably connected inside the support frame 1. One side of the support frame 1 is fixedly connected with a motor 82. The output end of the motor 82 is fixedly connected with one end of one of the transmission shafts 81. A conveyor belt 83 is rotatably arranged on the two transmission shafts 81, and baffles 84 are symmetrically and fixedly connected to the conveyor belt 83.

[0041] During use, the stirred concrete will fall on the conveyor belt 83. At this time, the motor 82 can be started to operate to drive the transmission shaft 81 to rotate. When the transmission shaft 81 rotates, it will drive the conveyor belt 83 to rotate around the two transmission shafts 81, so as to drive the concrete to be transported to the designated position. Secondly, because the concrete is in a fluid state, the baffles 84 on both sides of the conveyor belt 83 can intercept and limit the concrete to prevent the concrete from overflowing outside the conveyor belt 83 and reducing the waste of resources.

[0042] The implementation principle of a concrete automatic batching equipment in this embodiment is as follows: during use, first, raw materials such as water, cement, and aggregates are respectively loaded into the interiors of multiple storage bins 3. Subsequently, according to the required usage amount on-site, the raw materials are sequentially poured into different weighing hoppers 5. The weight sensors 53 on each weighing hopper 5 are used to accurately weigh the weights of different raw materials. At the same time, during the process of the storage bin 3 discharging materials, the vibration motor 65 can be started to operate. Through the operation of the vibration motor 65, the connecting plate 64 can be continuously vibrated and knocked, causing the connecting plate 64 to continuously shake. When the connecting plate 64 shakes, it will drive multiple sliders 62 to translate and shake on the guide rods 61 under the guidance of the guide rods 61, thereby pulling multiple springs 63 to expand and contract elastically. Through the mutual cooperation of the multiple springs 63 and the vibration motor 65, the feeding hose 4 can be driven by the multiple sliders 62 to continuously shake, so as to ensure that the raw materials can enter the weighing hopper 5 evenly and continuously. When the accurate weights of raw materials are loaded into the multiple weighing hoppers 5, the pneumatic valve one 55 can be opened through the controller 2, and the weighed raw materials are guided into the mixing bin 71 through the guiding pipe 54. At the same time, the controller 2 can accurately control the opening and closing time of the pneumatic valve one 55 to further ensure the accuracy of weighing;

[0043] When all different raw materials enter the interior of the mixing bin 71, two motors one 73 can be started to drive two stirring rods 72 to rotate. When the two stirring rods 72 rotate, they will drive multiple stirring blades 74 to rotate together, so as to stir the raw materials in the mixing bin 71. Through the cooperation of the two stirring rods 72 and the multiple stirring blades 74, it can be ensured that the concrete raw materials can be fully and evenly mixed. In addition, when the multiple stirring blades 74 rotate, the scrapers 75 at both ends will also be driven to rotate together. The inner wall of the mixing bin 71 can be scraped by the scrapers 75 at both ends to prevent concrete from adhering to the inner wall of the mixing bin 71, resulting in waste of resources. When the concrete raw materials are fully stirred, the pneumatic valve two 77 can be opened through the controller 2, and the stirred concrete is discharged through the discharge pipe 76. At this time, the humidity sensor 78 can detect parameters such as the humidity and density of the concrete in real time and feed these parameters back to the controller 2 to timely adjust the ratio of subsequent raw materials and the stirring time;

[0044] Finally, the stirred concrete will fall on the conveyor belt 83. At this time, the motor two 82 can be started to drive the transmission shaft 81 to rotate. When the transmission shaft 81 rotates, it will drive the conveyor belt 83 to rotate around the two transmission shafts 81, thereby driving the concrete to be transported to the designated position. Secondly, because the concrete is in a fluid state, the baffles 84 on both sides of the conveyor belt 83 can intercept and limit the concrete to prevent the concrete from overflowing outside the conveyor belt 83 and reducing waste of resources, thus completing the entire batching operation;

[0045] In addition, during the equipment deployment process, the controller 2 can automatically optimize the raw material ratio and mixing process based on historical data and real-time feedback parameters to improve the quality and stability of concrete. At the same time, the controller 2 also has remote monitoring and debugging functions, which facilitate users to monitor and adjust the equipment anytime and anywhere. Through the mutual cooperation of multiple devices, the deployment accuracy and stability of concrete are greatly improved, enabling the device to be applicable to concrete deployment tasks with different scenarios and requirements.

Claims

1. An automatic concrete mixing device, comprising a support frame (1), characterized in that: A controller (2) is fixedly connected to one side of the support frame (1); a plurality of storage bins (3) are mounted on the top of the support frame (1); a feeding hose (4) is fixedly connected to the bottom of each of the plurality of storage bins (3); a plurality of weighing hoppers (5) are mounted on the support frame (1); the plurality of weighing hoppers (5) are respectively located at the bottom of the plurality of storage bins (3); a shaking assembly (6) is mounted on the support frame (1); a mixing assembly (7) is mounted on the support frame (1); the mixing assembly (7) is located at the bottom of the plurality of weighing hoppers (5); a conveying assembly (8) is mounted on the support frame (1); the conveying assembly (8) is located at the bottom of the mixing assembly (7).

2. The automatic concrete mixing equipment according to claim 1, characterized in that: Both sides of the plurality of weighing buckets (5) are symmetrically fixedly connected with a fixing plate (51), the top of the fixing plate (51) is fixedly connected with a pull ring (52), one end of the pull ring (52) is fixedly connected with a weight sensor (53), the weight sensor (53) is electrically connected to the controller (2), the bottoms of the plurality of weighing buckets (5) are fixedly connected with a guide tube (54), the guide tube (54) is fixedly connected with a pneumatic valve 1 (55), and the weight sensor (53) and the guide tube (54) are both electrically connected to the controller (2).

3. The automatic concrete mixing equipment according to claim 1 is characterized in that: The shaking assembly (6) comprises two guide rods (61) symmetrically fixedly connected to the support frame (1), and a plurality of sliders (62) are slidably connected to the two guide rods (61). The plurality of feeding hoses (4) are all inserted into the sliders (62), and springs (63) are symmetrically fixedly connected to the opposite surfaces of the plurality of sliders (62), and a driving member is provided at one end of the plurality of sliders (62).

4. The automatic concrete mixing equipment according to claim 3 is characterized in that: The driving member comprises a connecting plate (64) fixedly connected to one end of the plurality of sliding blocks (62), a vibration motor (65) being fixedly connected to one side of the connecting plate (64), and the vibration motor (65) being electrically connected to the controller (2).

5. The automatic concrete mixing equipment according to claim 1, characterized in that: The mixing assembly (7) comprises a mixing chamber (71) fixedly connected to a support frame (1); two stirring rods (72) are symmetrically penetrated and rotatably connected inside the mixing chamber (71); two motors (73) are symmetrically fixedly connected to one side of the support frame (1); the output ends of the two motors (73) are respectively fixedly connected to one end of the two stirring rods (72); a plurality of stirring blades (74) are evenly fixedly connected to the two motors (73); and the two motors (73) are electrically connected to the controller (2).

6. The automatic concrete mixing equipment according to claim 5, characterized in that: Both ends of the plurality of stirring blades (74) are fixedly connected to scrapers (75), the bottom of the mixing bin (71) is fixedly connected to a discharge pipe (76), and a second pneumatic valve (77) is fixedly connected to the discharge pipe (76).

7. The automatic concrete mixing equipment according to claim 6, characterized in that: The discharge pipe (76) is fixedly connected to a humidity sensor (78), and the second pneumatic valve (77) and the humidity sensor (78) are both electrically connected to the controller (2).

8. The automatic concrete mixing equipment according to claim 1, characterized in that: The conveying assembly (8) comprises two transmission shafts (81) symmetrically rotatably connected to the support frame (1); a second motor (82) is fixedly connected to one side of the support frame (1); an output end of the second motor (82) is fixedly connected to one end of one of the transmission shafts (81); conveyor belts (83) are rotatably arranged on the two transmission shafts (81); and baffles (84) are symmetrically fixedly connected to the conveyor belts (83).

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