Asphalt mixture test detection equipment

Abstract

The utility model belongs to the field of asphalt raw material processing equipment, and particularly relates to asphalt mixture test detection equipment. The asphalt mixture test detection equipment comprises an upper seat, a vertical frame and a base, wherein the upper seat and the base are respectively positioned at the upper end and the lower end of the vertical frame; a bracket is arranged on one side of the lower end of the vertical frame, and a mixing tank is mounted on the bracket; a stirring assembly capable of adjusting the stirring angle is arranged in the mixing tank, the upper end of the stirring assembly is connected with a lifting assembly, and the lifting assembly is located on the upper seat; the lifting assembly is connected with the output assembly, and the output assembly is installed on the upper base. One side of the lower end of the mixing tank is also respectively communicated with an air supply assembly and a discharging assembly; according to the asphalt mixture test detection equipment, the stirring frame can rotate, asphalt raw materials can be stirred and mixed uniformly, meanwhile, the stirring frame can be overturned up and down, the cross sectional area of the stirring frame can be adjusted, then the stirring angle position of the stirring frame is adjusted, and the stirring efficiency of the asphalt raw materials is improved.

Description

Technical Field

[0001] This utility model belongs to the field of asphalt raw material processing equipment, and in particular relates to an asphalt mixture testing and detection device. Background Technology

[0002] Asphalt is a common black or dark brown viscous substance, mainly composed of hydrocarbons, and is widely used in road construction, waterproofing projects, and building materials.

[0003] Asphalt raw materials need to be tested before use. Testing asphalt usually requires mixing the asphalt raw materials thoroughly and then taking out a quantitative amount of the volume of asphalt to be tested. Mixing asphalt raw materials requires the use of mixing equipment.

[0004] The mixing equipment provided in related technologies mostly has this structure: it includes a mixing tank, a motor is installed at the top of the mixing tank, the output end of the motor is provided with a rotating shaft, the part of the rotating shaft inside the mixing tank is provided with a mixing frame, the mixing frame is Π-shaped; at the same time, heating rods are symmetrically distributed on the inner wall of the mixing tank, and the bottom of the mixing tank is connected to the feed inlet of a metering pump through a material pipe.

[0005] When using this mixing equipment, after putting various asphalt raw materials into the mixing tank, start the heating rod to heat the asphalt raw materials to prevent them from solidifying; finally, start the motor, and the motor outputs kinetic energy to rotate the mixing rack to mix the heated asphalt raw materials. Finally, start the metering pump to take out a metered amount of asphalt material.

[0006] The mixing equipment has a simple structure and is easy to use, but it also has obvious problems and defects. For example, due to the Π-shaped structure design of the mixing frame and the fixed installation position of the mixing frame, there are dead corners inside the mixing tank, and some asphalt raw materials are not mixed. In addition, material is easy to accumulate at the bottom of the mixing tank. Furthermore, asphalt material will also accumulate on the heating rods, and the heating rods are not easy to remove and clean from the inside of the mixing tank.

[0007] In view of the problems in the background art mentioned above, the present invention aims to provide a testing and inspection device for asphalt mixtures. Utility Model Content

[0008] This utility model provides an asphalt mixture testing and inspection device, which aims to solve the problems mentioned in the background art, such as the existence of dead zones inside the mixing tank, the failure to mix some asphalt raw materials, and the easy accumulation of materials at the bottom of the mixing tank; in addition, asphalt material will also accumulate on the heating rod, and the heating rod is not easy to remove and clean from the inside of the mixing tank.

[0009] This utility model is implemented as follows: an asphalt mixture testing and inspection device, the asphalt mixture testing and inspection device comprising:

[0010] The upper seat, the upright frame, and the base are respectively located at the upper and lower ends of the upright frame;

[0011] The lower end of the upright frame is provided with a bracket, on which a mixing tank is installed; the mixing tank is provided with an adjustable stirring component, the upper end of which is connected to a lifting component, which is located on an upper seat; the lifting component is connected to an output component, which is installed on an upper seat.

[0012] An air supply component and a material feeding component are also connected to one side of the lower end of the mixing tank.

[0013] As a further embodiment of this utility model: the air supply component includes an air pump and a hot air pipe, the inlet end of the air pump is connected to a hot air source, and the outlet end of the air pump is connected to the hot air pipe; one end of the hot air pipe is connected to the outlet end of the air pump, and the other end of the hot air pipe is connected to one side of the bottom of the mixing tank.

[0014] As a further embodiment of this utility model: the feeding assembly includes a metering pump and a feeding pipe, one end of the feeding pipe is connected to the lower side of the mixing tank, and the other end of the feeding pipe is connected to the inlet of the metering pump; a solenoid valve is installed on the feeding pipe.

[0015] As a further embodiment of this utility model: the stirring assembly includes a rotating shaft, a transmission box, and a stirring frame. A cover plate is installed on the upper end of the mixing tank, and a feed hole is provided on the cover plate. The transmission box is provided on the part of the rotating shaft that extends into the mixing tank after passing through the cover plate. Stirring frames are symmetrically distributed on both sides of the transmission box. The upper end of the rotating shaft is connected to the lifting assembly.

[0016] As a further embodiment of this utility model: a main bevel gear is provided on the part of the rotating shaft located inside the transmission box, and the surface of the stirring frame is provided with drainage holes. A pin is provided at one end of the stirring frame, and a secondary bevel gear is installed on the part of the pin located inside the transmission box. The outer side of the secondary bevel gear meshes with the outer side of the main bevel gear.

[0017] As a further embodiment of this utility model: the lifting assembly includes a cylinder frame and a cylinder. The cylinder frame is mounted on the upper seat, the cylinder is mounted on the cylinder frame, and the output end of the cylinder is provided with a rotating shaft. The lower end of the rotating shaft passes through the upper seat and is connected to the stirring assembly inside the mixing tank.

[0018] As a further embodiment of this utility model: the output component includes a servo motor, a drive wheel, and an auxiliary drive wheel. The servo motor is mounted and fixed on one side of the upright frame via a positioning bracket, and the output end of the servo motor is provided with a drive wheel. The auxiliary drive wheel is rotatably mounted on the upper seat, and a positioning plate is provided on the auxiliary drive wheel. A rotating shaft passes through both the positioning plate and the auxiliary drive wheel, and the outer side of the rotating shaft is meshed with the inner wall of the positioning plate. In addition, the outer side of the auxiliary drive wheel and the outer side of the drive wheel are connected by a conveyor belt.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] Compared with current mixing equipment, the asphalt mixture testing and inspection equipment described above has the following advantages:

[0021] It employs a mixing assembly installed inside the mixing tank. This assembly includes a rotating shaft, a transmission box, and a mixing frame. A main bevel gear is mounted on the portion of the rotating shaft inside the transmission box. The mixing frame has perforated surfaces, and a pin is located at one end of the frame. A secondary bevel gear is mounted on the portion of the pin inside the transmission box, with its outer side meshing with the outer side of the main bevel gear. When the rotating shaft rotates, it drives the mixing frame to rotate, mixing the asphalt raw materials inside the mixing tank. The rotation of the shaft drives the main bevel gear to rotate. Because the outer side of the main bevel gear meshes with the outer side of the secondary bevel gear, the rotation of the main bevel gear drives the rotation of the secondary bevel gear, and the rotation of the secondary bevel gear, in turn, causes... The pin installed at the center of the secondary bevel gear rotates, ultimately driving the mixing frame at one end of the pin to rotate and flip. This allows the mixing frame to rotate, mixing and blending the asphalt raw materials. At the same time, it can also flip up and down, adjusting the cross-sectional area of ​​the mixing frame, thereby adjusting the mixing angle and position of the mixing frame, improving the mixing efficiency of the asphalt raw materials. Moreover, through the design of the lifting and output components, the mixing components can be adjusted to different processing depths inside the mixing tank, which not only improves the degree of mixing of the asphalt raw materials, but also mixes and blends the asphalt raw materials accumulated at the bottom of the mixing tank, making it easier to push and discharge the asphalt raw materials accumulated at the bottom of the mixing tank.

[0022] In addition, by using an air supply component to introduce hot air into the mixing tank instead of installing heating rods inside the mixing tank, it is possible to ensure that the asphalt raw materials inside the mixing tank are not prone to component coagulation during mixing and mixing, while also avoiding the drawback of heating rods accumulating asphalt material that is difficult to disassemble and clean. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an asphalt mixture testing and inspection device according to the present invention. Figure 1 .

[0024] Figure 2This is a schematic diagram of the structure of an asphalt mixture testing and inspection device according to the present invention. Figure 2 .

[0025] Figure 3 This is a schematic diagram of the lifting assembly of an asphalt mixture testing and inspection device according to the present invention.

[0026] Figure 4 This is a schematic diagram of the internal structure of the mixing tank of an asphalt mixture testing and detection device according to this utility model.

[0027] Figure 5 This is a schematic diagram of the mixing assembly inside the mixing tank of an asphalt mixture testing and detection device according to the present invention.

[0028] In the diagram: 1-Air pump, 2-Hot air pipe, 3-Mixing tank, 4-Feed hole, 5-Cover plate, 6-Rotating shaft, 7-Upper seat, 8-Auxiliary drive wheel, 9-Cylinder frame, 10-Cylinder, 11-Conveyor belt, 12-Positioning frame, 13-Drive wheel, 14-Servo motor, 15-Upright frame, 16-Base, 17-Bracket, 18-Metering pump, 19-Discharge pipe, 20-Positioning plate, 21-Mixing rack, 22-Transmission box, 23-Leak hole, 24-Pin shaft, 25-Auxiliary bevel gear, 26-Main bevel gear. Detailed Implementation

[0029] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0030] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0031] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] Please see Figure 1-2 This utility model provides a technical solution: an asphalt mixture testing and inspection device, the asphalt mixture testing and inspection device comprising:

[0033] The upper seat 7, the upright frame 15, and the base 16 are respectively located at the upper and lower ends of the upright frame 15. The upper seat 7, the upright frame 15, and the base 16 work together to form the skeleton of the asphalt mixture testing and inspection equipment, and are used to construct and assemble other components of the asphalt mixture testing and inspection equipment.

[0034] The support frame 15 has a bracket 17 on one side of its lower end, and a mixing tank 3 is installed on the bracket 17. The mixing tank 3 is equipped with an adjustable stirring component, and the upper end of the stirring component is connected to a lifting component, which is located on the upper seat 7. The lifting component can adjust the processing depth of the stirring component inside the mixing tank 3 by outputting kinetic energy. The lifting component is also connected to an output component, which is also installed on the upper seat 7. The output component can drive the lifting component to rotate, thereby causing the stirring component at the lower end of the lifting component to rotate, which is used to stir and mix the asphalt raw materials put into the mixing tank 3, so as to facilitate the subsequent sampling and accurate testing of the mixed asphalt.

[0035] In addition, an air supply component and a material feeding component are connected to one side of the lower end of the mixing tank 3. The air supply component is used to lift and introduce hot air into the mixing tank 3 from bottom to top to ensure that the asphalt raw materials inside the mixing tank 3 are not prone to component coagulation when they are mixed evenly. The material feeding component is used to quantitatively discharge the asphalt raw materials to be tested according to the testing requirements.

[0036] In an embodiment of this utility model, when using the asphalt mixture testing equipment, various asphalt raw materials are first put into the mixing tank 3, and then hot air is introduced into the mixing tank 3 through the air supply component.

[0037] Next, the output component is started. The output component operates and outputs kinetic energy to drive the lifting component to rotate. When the lifting component rotates, it can drive the mixing component inside the mixing tank 3 to rotate, which is used to mix the asphalt raw materials put into the mixing tank 3.

[0038] During the mixing process of asphalt raw materials, the mixing components can automatically adjust the mixing angle and position; and by outputting kinetic energy through the lifting components, the processing depth of the mixing components inside the mixing tank 3 can be adjusted, which can improve the mixing degree of asphalt raw materials and at the same time, it can mix and blend the asphalt raw materials accumulated at the bottom of the mixing tank 3, making it easier to push and discharge the asphalt raw materials accumulated at the bottom of the mixing tank 3.

[0039] Please see Figure 1 In one embodiment of the present invention, the air supply component includes an air pump 1 and a hot air pipe 2. The inlet end of the air pump 1 is connected to a hot air source, and the outlet end of the air pump 1 is connected to the hot air pipe 2. One end of the hot air pipe 2 is connected to the outlet end of the air pump 1, and the other end of the hot air pipe 2 is connected to one side of the bottom of the mixing tank 3.

[0040] In an embodiment of this utility model, when the air supply assembly is used to introduce hot air into the mixing tank 3 to heat and stir the asphalt raw materials being stirred inside the mixing tank 3, the air pump 1 is started. The air pump 1 outputs kinetic energy to draw in hot air and delivers it to the bottom of the mixing tank 3 through the hot air pipe 2, so that the hot air rises from bottom to top inside the mixing tank 3 to achieve the heating operation of the asphalt raw materials; (a solenoid valve can be installed on the hot air pipe 2 to control the air flow rate of the hot air pipe 2).

[0041] Please see Figure 1 In one embodiment of the present invention, the feeding assembly includes a metering pump 18 and a feeding pipe 19. One end of the feeding pipe 19 is connected to the lower side of the mixing tank 3, and the other end of the feeding pipe 19 is connected to the inlet of the metering pump 18. A solenoid valve is installed on the feeding pipe 19.

[0042] In an embodiment of this utility model, when the feeding assembly is used to feed the mixed asphalt raw material, the metering pump 18 is started. The metering pump 18 operates and outputs kinetic energy to create a negative pressure inside the feeding pipe 19, thereby causing the feeding pipe 19, which generates a vacuum negative pressure, to discharge the mixed asphalt raw material quantitatively from the outlet of the metering pump 18 according to the test requirements.

[0043] Please see Figure 1 , Figure 2 and Figure 4 In one embodiment of the present invention, the mixing assembly includes a rotating shaft 6, a transmission box 22, and a mixing frame 21. A cover plate 5 is installed on the upper end of the mixing tank 3, and a feed hole 4 is provided on the cover plate 5. The feed hole 4 on the surface of the cover plate 5 is used for feeding various raw materials of asphalt. The transmission box 22 is provided on the part of the rotating shaft 6 that passes through the cover plate 5 and extends into the mixing tank 3. The mixing frame 21 is symmetrically installed on both sides of the transmission box 22. The upper end of the rotating shaft 6 is connected to the lifting assembly.

[0044] In the embodiments of this utility model, when the stirring assembly is used to stir and mix the asphalt raw materials put into the mixing tank 3, when the rotating shaft 6 rotates, it will drive the transmission box 22 at the lower end of the rotating shaft 6 to rotate. When the transmission box 22 rotates, the stirring racks 21 symmetrically distributed on both sides of the transmission box 22 will rotate centrifugally to stir and mix the various asphalt raw materials that enter the mixing tank 3.

[0045] Please see Figure 5 Specifically, the main bevel gear 26 is provided on the part of the rotating shaft 6 located inside the transmission box 22, the surface of the stirring frame 21 has holes 23 distributed thereon, one end of the stirring frame 21 is provided with a pin 24, and a secondary bevel gear 25 is installed on the part of the pin 24 located inside the transmission box 22, and the outer side of the secondary bevel gear 25 meshes with the outer side of the main bevel gear 26.

[0046] In this embodiment of the present invention, when the rotating shaft 6 rotates and drives the mixing frame 21 to rotate, and performs mixing and blending operations on the asphalt raw materials inside the mixing tank 3, the rotating shaft 6 will drive the main bevel gear 26 to rotate. Since the outer side of the main bevel gear 26 meshes with the outer side of the secondary bevel gear 25, the rotation of the main bevel gear 26 will drive the secondary bevel gear 25 to rotate. When the secondary bevel gear 25 rotates, the pin 24 installed at the axial position of the secondary bevel gear 25 will rotate, and finally drive the mixing frame 21 set at one end of the pin 24 to rotate and flip.

[0047] In this way, even if the mixing rack 21 rotates to mix and blend the asphalt raw materials, it can also flip up and down to adjust the cross-sectional area of ​​the mixing rack 21, thereby adjusting the mixing angle position of the mixing rack 21 and improving the mixing efficiency of the asphalt raw materials.

[0048] Please see Figure 1 , Figure 2 and Figure 3 In one embodiment of the present invention, the lifting assembly includes a cylinder frame 9 and a cylinder 10. The cylinder frame 9 is mounted on the upper seat 7, and the cylinder 10 is mounted on the cylinder frame 9. The output end of the cylinder 10 is provided with a rotating shaft 6, and the lower end of the rotating shaft 6 passes through the upper seat 7 and the end portion is connected to the stirring assembly inside the mixing tank 3.

[0049] In an embodiment of this utility model, when the lifting assembly is used to adjust the processing depth position of the stirring assembly installed inside the mixing tank 3, the cylinder 10 is activated, and the cylinder 10 outputs kinetic energy to drive the rotating shaft 6 to move up and down, thereby realizing the adjustment of the height position of the stirring assembly installed on the rotating shaft 6.

[0050] Please see Figure 1 , Figure 2 and Figure 3 In one embodiment of this utility model, the output component includes a servo motor 14, a drive wheel 13, and a secondary drive wheel 8. The servo motor 14 is mounted and fixed on one side of the upright frame 15 via a positioning frame 12, and the output end of the servo motor 14 is provided with the drive wheel 13. The secondary drive wheel 8 is rotatably mounted on the upper seat 7, and a positioning disk 20 is provided on the secondary drive wheel 8. A rotating shaft 6 passes through both the positioning disk 20 and the secondary drive wheel 8, and the outer side of the rotating shaft 6 is meshed with the inner wall of the positioning disk 20. In addition, the outer side of the secondary drive wheel 8 is connected to the outer side of the drive wheel 13 via a conveyor belt 11.

[0051] In an embodiment of this utility model, when the output component is used to drive the rotating shaft 6 to rotate, thereby causing the mixing component installed at the lower end of the rotating shaft 6 to operate, the servo motor 14 will drive the drive wheel 13 to rotate when it outputs kinetic energy. Since the outer side of the drive wheel 13 and the outer side of the auxiliary wheel 8 are connected by a conveyor belt 11, the rotation of the drive wheel 13 will drive the auxiliary wheel 8 to rotate. When the auxiliary wheel 8 rotates, it will drive the positioning disk 20 to rotate, thereby causing the rotating shaft 6, which passes through the axial center of the positioning disk 20, to rotate, thereby driving the mixing component to operate and achieving the mixing and blending of the asphalt raw materials.

[0052] Working principle and usage process of this utility model:

[0053] After various asphalt raw materials are put into the mixing tank 3, hot air is then introduced into the mixing tank 3 through the air supply component.

[0054] When the output component is activated, it outputs kinetic energy to drive the lifting component to rotate. When the lifting component rotates, it can drive the mixing component inside the mixing tank 3 to rotate, which is used to mix the asphalt raw materials put into the mixing tank 3.

[0055] During the mixing process of asphalt raw materials, the mixing components can automatically adjust the mixing angle and position; and by outputting kinetic energy through the lifting components, the processing depth of the mixing components inside the mixing tank 3 can be adjusted, which can improve the mixing degree of asphalt raw materials and at the same time, it can mix and blend the asphalt raw materials accumulated at the bottom of the mixing tank 3, making it easier to push and discharge the asphalt raw materials accumulated at the bottom of the mixing tank 3.

[0056] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0057] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An asphalt mixture test detection apparatus comprising: The utility model relates to a kind of automatic mixing machine, including upper seat (7), stand (15) and base (16), the upper seat (7) and base (16) are located at the upper and lower ends of stand (15) respectively;Characterized by: The lower end of the stand (15) is provided with a bracket (17), and a mixing tank (3) is installed on the bracket (17). The mixing tank (3) is provided with a stirring assembly with adjustable stirring angle inside. The upper end of the stirring assembly is connected with a lifting assembly, and the lifting assembly is located on the upper seat (7). The lifting assembly is connected with an output assembly, and the output assembly is installed on the upper seat (7). A gas supply assembly and a discharging assembly are also connected to the lower end of the mixing tank (3) on one side.

2. The asphalt mixture test and evaluation apparatus of claim 1, wherein: The gas supply assembly includes a gas pump (1) and a hot gas pipe (2). The inlet end of the gas pump (1) is connected to a hot gas source, and the outlet end of the gas pump (1) is connected to the hot gas pipe (2). One end of the hot gas pipe (2) is connected to the outlet end of the gas pump (1), and the other end of the hot gas pipe (2) is connected to the lower end of the mixing tank (3) on one side.

3. The asphalt mixture test apparatus of claim 1, wherein: The discharging assembly includes a quantitative pump (18) and a discharging pipe (19). One end of the discharging pipe (19) is connected to the lower end of the mixing tank (3) on one side, and the other end of the discharging pipe (19) is connected to the inlet position of the quantitative pump (18). An electromagnetic valve is installed on the discharging pipe (19).

4. The asphalt mixture test apparatus of claim 1, wherein: The stirring assembly includes a rotating shaft (6), a transmission box (22), and a stirring frame (21). A cover plate (5) is installed on the upper end of the mixing tank (3), and a feeding hole (4) is formed in the cover plate (5). The lower end of the rotating shaft (6) extends into the transmission box (22) after passing through the cover plate (5). The transmission box (22) is symmetrically installed on both sides of the rotating shaft (6), and the upper end of the rotating shaft (6) is connected with the lifting assembly.

5. An asphalt mixture test apparatus as claimed in claim 4, wherein: The rotating shaft (6) is provided with a main bevel gear (26) on the part inside the transmission box (22). The surface of the stirring frame (21) is provided with a plurality of perforations (23). One end of the stirring frame (21) is provided with a pin shaft (24). The other end of the pin shaft (24) is provided with a secondary bevel gear (25) on the part inside the transmission box (22). The outer side of the secondary bevel gear (25) is engaged with the outer side of the main bevel gear (26).

6. An asphalt mixture test apparatus as claimed in claim 4, wherein: The lifting assembly includes a cylinder frame (9) and a cylinder (10). The cylinder frame (9) is installed on the upper seat (7), and the cylinder (10) is arranged on the cylinder frame (9). The output end of the cylinder (10) is provided with a rotating shaft (6), and the lower end of the rotating shaft (6) is connected with the stirring assembly inside the mixing tank (3) after passing through the upper seat (7).

7. An asphalt mixture test apparatus as claimed in claim 6, wherein: The output assembly comprises a servo motor (14), a driving wheel (13) and a driven wheel (8), the servo motor (14) is fixedly installed on one side of a vertical frame (15) through a positioning frame (12), and the output end of the servo motor (14) is provided with the driving wheel (13); the driven wheel (8) is rotatably installed on an upper seat (7), the driven wheel (8) is provided with a positioning disc (20), a rotating shaft (6) penetrates through the positioning disc (20) and the driven wheel (8) at the same time, and the outer side of the rotating shaft (6) is in engagement connection with the inner wall of the positioning disc (20); in addition, the outer side of the driven wheel (8) and the outer side of the driving wheel (13) are connected through a conveying belt (11).

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