Mixing truck with function of preventing concrete solidification
By designing horizontally arranged material barrels and spiral scrapers, the problems of large energy consumption and limited loading of traditional mixing transport vehicles are solved, and transportation efficiency and concrete quality are improved, which is of great sustainable development significance.
Patent Information
- Application Number
- CN202411648273.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-01-03
AI Technical Summary
Because the drum needs to be continuously rotated to prevent solidification, traditional concrete mixing transport vehicles have large energy consumption and limited loading capacity, low space utilization, which affects construction efficiency.
The barrel axis is designed to be arranged horizontally, the material opening is located on the outer wall of the circumference, and a spiral scraper is installed inside to prevent curing. The scraper is slidingly in contact with the inner wall of the barrel, reducing adhesion and effectively mixing the concrete.
It significantly improves the concrete volume and transportation efficiency of a single transportation, saves energy consumption, ensures the uniformity and fluidity of concrete quality, and reduces maintenance costs.
Smart Images
Figure CN119238731A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of transportation equipment, in particular to a mixing truck with the function of preventing concrete from solidifying. Background Art
[0002] With the acceleration of urbanization and the vigorous development of infrastructure construction, the demand for high-quality concrete is growing. Therefore, in the construction process, efficient and reliable concrete supply is one of the key factors to ensure project quality and construction progress. Concrete mixer trucks, as a heavy equipment designed specifically for construction, play an important role in connecting concrete mixing plants and construction sites.
[0003] Commonly used concrete mixer trucks mainly use the inclined drum to hold concrete, and in order to prevent the concrete from solidifying, the drum needs to be in a rotating state at all times. Due to the large size and weight of the drum, the vehicle needs to expend a lot of energy to power the rotation of the drum. Moreover, since the drum needs to be tilted, it cannot be filled with concrete, resulting in low space utilization, less concrete transported at a time by the vehicle, and low transportation efficiency. Summary of the invention
[0004] In order to solve the above technical problems, the present invention provides a mixer truck with the function of preventing concrete solidification, and the specific technical solution adopted is: A mixer truck with a function of preventing concrete from solidifying comprises a vehicle body, a base and a material barrel rotatably mounted on the base, the base being fixed on the vehicle body, the axis of the material barrel being horizontal and the material barrel being used to hold concrete, a material port for feeding and discharging materials being provided on the material barrel, when the material barrel is feeding materials, the material port faces upwards, and when the material barrel is discharging materials, the material barrel rotates and the material port faces downwards; The two end surfaces in the barrel are both rotatably provided with swivels, and the two swivels are connected by a plurality of scrapers, and the scrapers are in sliding contact with the inner wall of the barrel.
[0005] Furthermore, the scraper is in a spiral shape.
[0006] Furthermore, the material barrel is composed of an outer cylinder located on the outside, a cylinder cover and an inner liner located on the inside, the inner liner is used to hold concrete, the swivel and the scraper are both arranged in the inner liner, and the material port passes through the outer cylinder and the inner liner.
[0007] Furthermore, a plurality of plug blocks are provided at both ends of the inner liner tube, a plurality of plug holes are provided on the outer tube and the tube cover, and the plug blocks slide through the plug holes.
[0008] Furthermore, a guide sleeve and a fixing frame are relatively arranged on the outer wall of the outer cylinder, a slide plate is slidably inserted in the guide sleeve, the slide plate is rotatably connected with the cylinder cover, a plug-in frame is slidably inserted in the fixing frame, and the fixing frame and the plug-in frame are fastened and connected by bolts, and the plug-in frame is fixed on the cylinder cover; Wherein, an outer edge is arranged at the end of the slide away from the cylinder cover.
[0009] Furthermore, it also includes a cover plate and a material guide chute plate, wherein the cover plate is used to block the material port, and the material guide chute plate is used to drain the concrete discharged from the material port; Two sliding seats are provided on the outer wall of the outer cylinder for sliding along the axial direction thereof, and the cover plate is installed on the sliding seats; Two support seats are fixed on the cylinder cover, and each support seat is rotatably provided with a connecting arm, the connecting arm is fixedly connected to the material guide trough plate, and a support platform for limiting the connecting arm is arranged on the support seat.
[0010] Furthermore, the end of the guide trough plate of the slide seat is rotatably provided with a rotating shaft, the cover plate is fixedly connected to the rotating shaft, the rotating shaft and the slide seat are connected via a leaf spring, and a clamping edge is provided on the cover plate, which overlaps the surface of the slide seat; Auxiliary rods are fixed on both the front and rear sides of the cover plate, and connecting rods are tilted and rotatably arranged on the auxiliary rods. Support sleeves are arranged on the front and rear side walls of the guide trough plate, and a sliding column is slidably inserted in the support sleeve. One end of the sliding column is rotatably connected to the connecting rod, and a telescopic oil cylinder is rotatably arranged on the other end of the sliding column, and the fixed end of the telescopic oil cylinder is rotatably installed on the cylinder cover; The support sleeve and the sliding column are connected via a spring, and the sliding column is provided with a limiting ring for limiting the position of the sliding column on the support sleeve.
[0011] Furthermore, a first motor is arranged on the end surface of the outer cylinder, and an output end of the first motor is drivingly connected to a rotating ring in the inner liner cylinder; The base is provided with a second motor and a transmission wheel for providing power for the rotation of the barrel.
[0012] The advantages of the present invention are: By designing the barrel to be arranged with a horizontal axis and opening a material port on its circumferential outer wall, this design allows the barrel to fully utilize its internal space and load more concrete, avoiding the space waste caused by the tilt of the drum in the traditional method, significantly increasing the amount of concrete transported in a single trip, and thus improving the overall transportation efficiency; traditional mixer trucks need to continuously rotate the entire large drum to prevent the concrete from solidifying, which consumes a lot of energy, while in this case, only the scraper arranged inside the barrel needs to be rotated. Compared with the entire barrel, these parts are light in weight and require less kinetic energy to rotate, so energy consumption can be greatly saved; the sliding contact between the scraper and the inner wall of the barrel not only reduces the possibility of concrete sticking and solidifying on the inner wall of the barrel, but also effectively stirs the concrete to ensure its uniformity and fluidity during transportation, thereby ensuring that the quality of the concrete is not affected; this technical solution, through innovative structural design, not only solves the problems of high energy consumption, limited loading capacity, and high maintenance cost of traditional mixer trucks, but also further optimizes the concrete mixing and transportation process, which is of great significance for promoting the sustainable development of the construction industry. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0014] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of the middle material barrel; Figure 3 yes Figure 2 A schematic diagram of the structure from another perspective; Figure 4 yes Figure 2 Schematic diagram of the cross-sectional structure of the middle barrel; Figure 5 yes Figure 4 Schematic diagram of explosion structure; Figure 6 yes Figure 2 An enlarged structural diagram of the middle cover plate and the guide chute plate; Figure 7 yes Figure 6 A schematic diagram of the enlarged structure of the middle cover; Figure 8 yes Figure 6 An enlarged structural diagram of the middle guide chute plate from another perspective; 1. Base; 2. Material barrel; 3. Material port; 4. Rotating ring; 5. Scraper; 6. Outer cylinder; 7. Cylinder cover; 8. Lining cylinder; 9. Insert block; 10. Insert hole; 11. Guide sleeve; 12. Slide plate; 13. Fixed frame; 14. Insert frame; 15. Cover plate; 16. Material guide trough plate; 17. Sliding seat; 18. Support seat; 19. Connecting arm; 20. Rotating shaft; 21. Leaf spring; 22. Auxiliary rod; 23. Connecting rod; 24. Supporting sleeve; 25. Sliding column; 26. Telescopic cylinder; 27. Spring; 28. Limiting ring; 29. First motor; 30. Second motor; 31. Transmission wheel. DETAILED DESCRIPTION
[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0016] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. This embodiment is written in a progressive manner.
[0018] like Figures 1 to 8 As shown, a mixer truck with a function of preventing concrete solidification of the present invention comprises a vehicle body, a base 1 and a material barrel 2 rotatably mounted on the base 1, the base 1 is fixed on the vehicle body, the axis of the material barrel 2 is horizontal and the material barrel 2 is used to hold concrete, and a material port 3 for feeding and discharging materials is provided on the material barrel 2. When the material barrel 2 is feeding, the material port 3 faces upward, and when the material barrel 2 is discharging materials, the material barrel 2 rotates so that the material port 3 faces downward; A swivel 4 is rotatably provided on the two end surfaces of the barrel 2 . The two swivels 4 are connected by a plurality of scrapers 5 . The scrapers 5 are in sliding contact with the inner wall of the barrel 2 .
[0019] In detail, the number of bases 1 can be set to support the material barrel 2, and the base 1 is installed on the vehicle body. The vehicle body generally includes a cab and a truck bed, so that the material barrel 2 and the concrete loaded therein can be driven by the vehicle body to move, so as to achieve the purpose of concrete transportation. The axis of the material barrel 2 is horizontal, and the material port 3 is opened on the circumferential outer wall of the material barrel 2, so that enough concrete can be placed in the material barrel 2 without worrying about the concrete overflowing through the material port 3 when the material barrel 2 is not full of concrete, thereby greatly improving the carrying capacity and making full use of the internal space of the material barrel 2. The mouth 3 is used for the entry and exit of concrete. When concrete is filled into the barrel 2, the mouth 3 is upward. When the barrel 2 discharges concrete, the barrel 2 rotates with the mouth 3 facing downward. The swivel 4 and the scraper 5 are used to stir the concrete in the barrel 2 to prevent the concrete from solidifying. Since the kinetic energy required for the rotation of the swivel 4 and the scraper 5 is smaller than the kinetic energy for rotating the barrel 2, energy can be greatly saved. Moreover, since the scraper 5 is in sliding contact with the inner wall of the barrel 2, the scraper 5 can repeatedly scrape and clean the concrete on the inner wall of the barrel 2 to prevent the concrete from sticking and solidifying on the inner wall of the barrel 2.
[0020] By designing the barrel 2 to be arranged with its axis horizontally and opening a material port 3 on its circumferential outer wall, this design allows the barrel 2 to fully utilize its internal space and load more concrete, avoiding the space waste caused by the tilt of the drum in the traditional way, significantly increasing the amount of concrete transported in a single trip, and thus improving the overall transportation efficiency; the traditional mixer truck needs to continuously rotate the entire large drum to prevent the concrete from solidifying, which consumes a lot of energy, while in this case, it is only necessary to rotate the scraper 5 arranged inside the barrel 2. Compared with the entire barrel 2, these components are light in weight and require less kinetic energy for rotation, so energy consumption can be greatly saved; the sliding contact between the scraper 5 and the inner wall of the barrel 2 not only reduces the possibility of concrete sticking and solidifying on the inner wall of the barrel 2, but also effectively stirs the concrete to ensure its uniformity and fluidity during transportation, thereby ensuring that the quality of the concrete is not affected; through innovative structural design, this technical solution not only solves the problems of high energy consumption, limited loading capacity, and high maintenance cost of traditional mixer trucks, but also further optimizes the concrete mixing and transportation process, which is of great significance for promoting the sustainable development of the construction industry.
[0021] Furthermore, the scraper 5 is in a spiral shape.
[0022] In detail, due to the shape characteristics of the scraper 5, when it rotates, it can push the concrete near the inner arm of the barrel 2 to flow in the positive direction along the axis of the barrel 2, while the concrete in the middle of the barrel 2 automatically flows in the reverse direction. The scraper 5 simultaneously pushes the concrete to flow along the circumferential inner wall direction of the barrel 2, so that the scraper 5 can make the concrete in the barrel 2 flow in multiple directions, realize the comprehensive stirring of the concrete, and improve the uniformity of the concrete.
[0023] When the bucket 2 discharges concrete, the concrete in the bucket 2 can flow toward the material port 3 due to the pushing effect of the scraper 5, so that the concrete in the bucket 2 can be discharged comprehensively and quickly to avoid residue.
[0024] Furthermore, the material barrel 2 is composed of an outer cylinder 6 located on the outside, a cylinder cover 7 and an inner liner cylinder 8 located on the inside, the inner liner cylinder 8 is used to hold concrete, the swivel 4 and the scraper 5 are both arranged in the inner liner cylinder 8, and the material port 3 passes through the outer cylinder 6 and the inner liner cylinder 8.
[0025] In detail, the outer cylinder 6 and the cylinder cover 7 form a barrel shape, and the inner liner cylinder 8 is located therein. When the concrete in the inner liner cylinder 8 solidifies due to negligence at work or other reasons, the concrete can be discharged by opening the cylinder cover 7 and removing and replacing the inner liner cylinder 8. This can ensure that the vehicle can quickly resume the work of transporting concrete, avoiding the need to break the rotating drum and clean the solidified concrete in the traditional method.
[0026] Furthermore, a plurality of insert blocks 9 are provided at both ends of the inner liner tube 8 , and a plurality of insert holes 10 are provided on the outer tube 6 and the tube cover 7 , and the insert blocks 9 slide through the insert holes 10 .
[0027] In detail, by providing the plug block 9 and the socket 10, the inner liner 8 can be quickly assembled and fixed to prevent the inner liner 8 from rotating freely in the outer tube 6 and causing the material port 3 on the outer tube 6 and the material port 3 on the inner liner 8 to be unable to align.
[0028] Furthermore, a guide sleeve 11 and a fixing frame 13 are relatively arranged on the outer wall of the outer cylinder 6, a slide plate 12 is slidably inserted in the guide sleeve 11, the slide plate 12 is rotatably connected with the cylinder cover 7, a plug-in frame 14 is slidably inserted in the fixing frame 13, and the fixing frame 13 and the plug-in frame 14 are fastened and connected by bolts, and the plug-in frame 14 is fixed on the cylinder cover 7; The end of the slide plate 12 away from the cylinder cover 7 is provided with an outer edge.
[0029] In detail, when it is necessary to open the cylinder cover 7, loosen the bolts between the fixing frame 13 and the plug-in frame 14, and push the cylinder cover 7 along the axial direction of the barrel 2 to move a specified distance, so that the fixing frame 13 is separated from the plug-in frame 14. At this time, the cylinder cover 7 will drive the slide plate 12 to slide on the guide sleeve 11, and the outer edge of the slide plate 12 can prevent the slide plate 12 from separating from the guide sleeve 11. Then, the cylinder cover 7 can be opened by rotating it.
[0030] Furthermore, it also includes a cover plate 15 and a material guide chute plate 16, the cover plate 15 is used to block the material port 3, and the material guide chute plate 16 is used to drain the concrete discharged from the material port 3; Two slide seats 17 are provided on the outer wall of the outer cylinder 6 for sliding along the axial direction thereof, and the cover plate 15 is installed on the slide seats 17; Two support seats 18 are fixed on the cylinder cover 7 , and a connecting arm 19 is rotatably provided on each support seat 18 . The connecting arm 19 is fixedly connected to the material guide chute plate 16 , and a support platform for limiting the connecting arm 19 is provided on the support seat 18 .
[0031] In detail, in the natural state, the material port 3 opens upward, the cover plate 15 blocks the material port 3, the connecting arm 19 is overlapped on the support platform on the support seat 18, the support platform on the support seat 18 limits the connecting arm 19, and the material guide chute plate 16 is vertical and attached to the outer wall of the barrel cover 7. This can reduce the space occupied by the material guide chute plate 16. When it is necessary to fill concrete into the material barrel 2, the slide seat 17 and the cover plate 15 are pushed away from the material port 3. When the concrete in the material barrel 2 needs to be discharged, the material barrel 2 is rotated with the material port 3 facing downward. At this time, the material guide chute plate 16 is rotated and its end is close to the bottom of the material port 3, so that the concrete discharged through the material port 3 enters the material guide chute plate 16 and is drained by the material guide chute plate 16.
[0032] Furthermore, the end of the slide 17 that rotates downward toward the guide chute plate 16 is provided with a rotating shaft 20, the cover plate 15 is fixedly connected to the rotating shaft 20, the rotating shaft 20 and the slide 17 are connected via a leaf spring 21, and a clamping edge is provided on the cover plate 15, which overlaps the surface of the slide 17; Auxiliary rods 22 are fixed on both the front and rear sides of the cover plate 15, and connecting rods 23 are tilted and rotatably arranged on the auxiliary rods 22. Support sleeves 24 are arranged on the front and rear side walls of the guide trough plate 16, and a sliding column 25 is slidably inserted in the support sleeve 24. One end of the sliding column 25 is rotatably connected to the connecting rod 23, and the other end of the sliding column 25 is rotatably provided with a telescopic oil cylinder 26, and the fixed end of the telescopic oil cylinder 26 is rotatably mounted on the cylinder cover 7; The support sleeve 24 and the sliding column 25 are connected via a spring 27 , and a limiting ring 28 is provided on the sliding column 25 for limiting the position of the sliding column 25 on the support sleeve 24 .
[0033] In detail, since the cover plate 15 is connected to the slide 17 via the rotating shaft 20, the cover plate 15 can rotate on the slide 17, and the leaf spring 21 will undergo elastic deformation, so that the cover plate 15 tilts toward the material guide trough plate 16 and stops blocking the material port 3.
[0034] When concrete filling is required, the telescopic cylinder 26 contracts and pulls the slide column 25 downward, and the slide column 25 slides in the support sleeve 24. The slide column 25 pulls the cover plate 15 to tilt toward the material guide trough plate 16 through the connecting rod 23 and the auxiliary rod 22, so that the material port 3 is opened. When the filling is completed, the telescopic cylinder 26 extends and the cover plate 15 blocks the material port 3 again. At this time, the card edge on the cover plate 15 overlaps the slide seat 17. When the concrete in the barrel 2 needs to be discharged, the barrel 2 rotates and makes the material port 3 face downward, and the telescopic cylinder 26 continues to extend, at this time the limit ring 28 is fitted with the support sleeve 24, and the telescopic cylinder 26 directly pushes the slide 17 to rotate by using the limit ring 28 and the support sleeve 24, so that the slide 17 gradually changes from the retracted state to the opened state, and while the slide column 25 moves, it will use the connecting rod 23 and the auxiliary rod 22 to push the cover plate 15 downward away from the material guide chute plate 16, and the cover plate 15 will drive the slide 17 to move away from the material guide chute plate 16 synchronously, so that the material port 3 is opened, so that the concrete is directly discharged from the material port 3 to the slide 17.
[0035] The spring 27 is mainly provided to prevent the guide chute plate 16 from moving randomly on the slide post 25 , so as to provide elastic thrust for the support sleeve 24 .
[0036] Furthermore, a first motor 29 is provided on the end surface of the outer cylinder 6, and an output end of the first motor 29 is drivingly connected to a rotating ring 4 in the inner liner 8; The base 1 is provided with a second motor 30 and a transmission wheel 31 for providing power for the barrel 2 to rotate.
[0037] In detail, the first motor 29 can provide rotational power for the rotating ring 4 in the inner liner 8. When the inner liner 8 is removed, the output end of the first motor 29 can be separated from the rotating ring 4. The second motor 30 is fixed on the base 1, and the transmission wheel 31 is installed on the output end of the second motor 30, and the transmission wheel 31 is connected to the barrel 2 in a transmission manner, thereby utilizing the second motor 30 and the transmission wheel 31 to provide power for the rotation of the barrel 2.
[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.
Claims
1. A mixer truck with the function of preventing concrete solidification, characterized in that: It includes a vehicle body, a base and a barrel rotatably mounted on the base, the base is fixed on the vehicle body, the axis of the barrel is horizontal and the barrel is used to hold concrete, a material port for feeding and discharging materials is provided on the barrel, when the barrel is feeding materials, the material port faces upwards, when the barrel is discharging materials, the barrel rotates and the material port faces downwards; The two end surfaces in the barrel are both rotatably provided with swivels, and the two swivels are connected by a plurality of scrapers, and the scrapers are in sliding contact with the inner wall of the barrel.
2. A mixer truck with a function of preventing concrete solidification as claimed in claim 1, characterized in that: The scraper is in a spiral shape.
3. A mixer truck with a function of preventing concrete solidification as claimed in claim 2, characterized in that: The material barrel is composed of an outer cylinder located on the outside, a cylinder cover and an inner liner located on the inside. The inner liner is used to hold concrete. The swivel and the scraper are both arranged in the inner liner, and the material port passes through the outer cylinder and the inner liner.
4. A mixer truck with a function of preventing concrete solidification as claimed in claim 3, characterized in that: A plurality of insert blocks are arranged at both ends of the inner liner tube, a plurality of insert holes are arranged on the outer tube and the tube cover, and the insert blocks slide through the insert holes.
5. A mixer truck with the function of preventing concrete solidification as claimed in claim 4, characterized in that: A guide sleeve and a fixing frame are arranged on the outer wall of the outer cylinder relatively to each other, a slide plate is inserted and slidably penetrated in the guide sleeve, the slide plate is rotatably connected with the cylinder cover, a plug-in frame is inserted and slidably penetrated on the fixing frame, and the fixing frame and the plug-in frame are fastened and connected by bolts, and the plug-in frame is fixed on the cylinder cover; Wherein, an outer edge is arranged at the end of the slide away from the cylinder cover.
6. A mixer truck with a function of preventing concrete solidification as claimed in claim 5, characterized in that: It also includes a cover plate and a material guide chute plate, wherein the cover plate is used to block the material port, and the material guide chute plate is used to drain the concrete discharged from the material port; Two sliding seats are provided on the outer wall of the outer cylinder for sliding along the axial direction thereof, and the cover plate is installed on the sliding seats; Two support seats are fixed on the cylinder cover, and each support seat is rotatably provided with a connecting arm, which is fixedly connected to the material guide trough plate, and a support platform for limiting the connecting arm is arranged on the support seat.
7. A mixer truck with a function of preventing concrete solidification as claimed in claim 6, characterized in that: The end of the guide trough plate of the slide seat is rotatably provided with a rotating shaft, the cover plate is fixedly connected to the rotating shaft, the rotating shaft and the slide seat are connected by a leaf spring, and a clamping edge is provided on the cover plate, which overlaps the surface of the slide seat; Auxiliary rods are fixed on both the front and rear sides of the cover plate, and connecting rods are tilted and rotatably arranged on the auxiliary rods. Support sleeves are arranged on the front and rear side walls of the guide trough plate, and a sliding column is slidably inserted in the support sleeve. One end of the sliding column is rotatably connected to the connecting rod, and a telescopic oil cylinder is rotatably arranged on the other end of the sliding column, and the fixed end of the telescopic oil cylinder is rotatably installed on the cylinder cover; The support sleeve and the sliding column are connected via a spring, and the sliding column is provided with a limiting ring for limiting the position of the sliding column on the support sleeve.
8. A mixer truck with the function of preventing concrete solidification as claimed in claim 7, characterized in that: A first motor is arranged on the end surface of the outer cylinder, and an output end of the first motor is drivingly connected to a rotating ring in the inner liner cylinder; The base is provided with a second motor and a transmission wheel for providing power for the rotation of the barrel.