Bundling machine with feeding transmission function
By designing a baling machine with a feeding drive and using a rotating feeding component, a material conveying component and a material feeding component, automatic feeding and efficient baling of green storage raw materials are realized, solving the problems caused by manual feeding in the existing technology. problems of high labor intensity and low efficiency.
Patent Information
- Application Number
- CN202411484984.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-01-24
AI Technical Summary
The existing green storage feed baling operation relies on manual feed, resulting in high labor intensity and low efficiency, and long-term exposure of crushed raw materials affects quality.
Design a baling machine with feeding transmission. It uses a rotating feeding component, a material conveying component and a material feeding component. The motor drives the spiral blades, the conveyor belt and the fixed shell movable plate to realize automatic feeding of green storage raw materials. and efficient baling.
The automated feeding and efficient bundles of the green storage raw materials have been achieved, the efficiency of bundle processing is improved, the strength of artificial labor is reduced, and the quality of raw materials is protected.
Smart Images

Figure CN119344099A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of balers, in particular to a baler with feeding transmission. Background Art
[0002] Silage is green feed. It refers to the feed made from green feed through controlled fermentation. Silage feed is known as "canned grass". It is juicy and palatable, sour and fragrant, highly digestible, and rich in nutrition. It is a top-quality feed for feeding cattle, sheep and other livestock. There are many raw materials for silage feed, and all green plants that can be used as feed can be used as silage raw materials. In order to facilitate the transportation and storage of silage, the existing technology will crush the plant straw and then perform the baling operation.
[0003] In the prior art, the baling operation of silage materials is to manually add the crushed silage materials to the conveying equipment, and then convey the silage materials to the inside of the baler through the conveying equipment, and the silage materials are baled through the operation of the baler. Because the amount of silage at one time is generally large, the baling operation through manual feeding is not only labor-intensive for the staff, but also greatly reduces the efficiency of silage production, thereby causing the crushed silage materials to be exposed to the external environment for a long time, affecting the quality of silage, and is not conducive to silage production. Based on the above reasons, the present invention proposes a baler with a feeding transmission. Summary of the invention
[0004] The technical problem to be solved by the present invention is to provide a baler with a feeding transmission which has the advantages of automatic feeding and effectively improving the baling process efficiency.
[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A baler with a feeding transmission comprises a baler main machine, a driving mechanism is arranged on the baler main machine, a fixed frame is arranged on the front side of the baler main machine, a material feeding assembly is arranged between the baler main machine and the fixed frame, mounting frames are installed on the left and right sides of the fixed frame, the front sides of the fixed frame and the mounting frame are not closed, a through groove is opened on the bottom surface of the mounting frame and a material conveying assembly is arranged in the through groove, a rotating feeding assembly is arranged on the front side of the mounting frame, and a side plate is installed on the side of the mounting frame away from the fixed frame, and an auxiliary wheel is movably connected to the side plate.
[0006] Preferably, the material feeding assembly includes a circular tube, one end of the circular tube is fixedly connected to the baler main machine, the other end of the circular tube is fixedly connected to a feeding funnel, the feeding funnel is fixed on the bottom surface of the fixed frame and is arranged through the inner cavity of the fixed frame, a rotating shaft is arranged in the circular tube, the bottom end of the rotating shaft passes through the side wall of the circular tube and is fixedly connected to a first motor, the first motor is fixedly connected to the outer side wall of the circular tube, and a spiral blade is fixedly connected to the side wall of the rotating shaft.
[0007] Preferably, the material conveying assembly includes a circular shaft, and two circular shafts are symmetrically and movably connected in the through groove, one of the circular shafts passes through the rear side wall of the mounting frame and is fixedly connected to the second motor, the second motor is fixedly connected to the mounting frame, and round rollers are fixedly connected to the side walls of the circular shafts, and the same conveyor belt is mounted on the two round rollers.
[0008] Preferably, the rotary feeding assembly includes a mounting plate, two mounting plates are symmetrically fixedly connected in the mounting frame, the mounting plate is T-shaped, and the two mounting plates are movably connected with the same main shaft, the main shaft passes through the mounting plate at one end away from the fixed frame and is fixedly connected to a third motor, and the third motor is fixedly connected to the mounting plate.
[0009] Preferably, a plurality of fixed shells are evenly distributed and fixedly connected on the side wall of the main shaft, and movable plates are movably connected inside the fixed shells, and first springs are fixedly connected on the movable plates, and the other end of the first spring is fixedly connected to the inner side wall of the fixed shell, and the movable plate extends out of the fixed shell away from one end of the first spring and the side wall is arranged in an arc shape.
[0010] Preferably, a side groove is provided on the side wall of the through groove close to the fixed frame, and a plurality of second springs are fixedly connected in the side groove, and the other ends of the plurality of second springs are fixedly connected to the same scraper, and the scraper is movably connected to the side groove, and the scraper extends out of the side groove away from one end of the second spring and is arranged in a triangular shape.
[0011] Preferably, plug plates are fixedly connected to both left and right side walls of the fixing frame, and a plug plate is fixedly connected to a side of the installation frame away from the fixing frame, and a plurality of positioning holes are formed on the plug plate.
[0012] Preferably, slots are provided on the side walls of the installation frame and the side plate close to the fixed frame, the plug plates and the slots are concave and matched with each other, adjacent plug plates and slots are plug-connected, and a number of fixing bolts are evenly distributed and threaded on the side walls of the slots, and the fixing bolts are inserted into the positioning holes.
[0013] Preferably, a blocking block is fixedly connected to the front side wall of the fixing frame, and the cross section of the blocking block is triangular.
[0014] Preferably, a first baffle is fixedly connected to the bottom surface of the inner cavity of the installation frame, the top surface of the first baffle is arranged in an arc shape near the front side, and a second baffle is fixedly connected to the bottom surface of the installation frame at the front side of the through slot.
[0015] Compared with the prior art, the present invention has at least the following beneficial effects: The present invention is provided with a rotary feeding assembly, a material conveying assembly and a material feeding assembly. The third motor drives the fixed shell and the movable plate on the main shaft to rotate. The fixed shell and the movable plate can be used to realize the rotary feeding operation of the crushed silage raw materials. The second motor drives the conveyor belt to run. The conveyor belt can be used to realize the continuous convergence of the fed silage raw materials. The first motor drives the spiral blades on the rotating shaft to rotate, so that the converged silage raw materials can be conveyed into the baler main machine, so that the silage raw materials can be efficiently and conveniently baled, thereby improving the baling processing efficiency of the silage raw materials. The present invention is provided with an installation frame, a fixed frame, a side plate, an insert plate, a slot and fixing bolts. When in use, a suitable number of installation frames can be installed according to actual needs. The installation frame and the fixed frame can be installed by plugging the insert plates and the slots on the installation frame and the fixed frame, and fixed connection is achieved by fixing bolts. The automatic feeding operation of large-area silage raw materials can be achieved, and the baling processing efficiency of the silage raw materials is further improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.
[0017] Figure 1 It is a schematic diagram of the front three-dimensional structure of the present invention; Figure 2 It is a side perspective structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure on the fixing frame of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure on the installation frame of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the rotary feeding assembly of the present invention; Figure 6 It is a three-dimensional structural schematic diagram of the material feeding assembly of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure on the side panel of the present invention; Figure 8 It is a three-dimensional structural schematic diagram of the material conveying assembly of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure on the scraper of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure inside the fixed shell of the present invention.
[0018] [Reference Signs] 1. Main body of baler; 2. Driving mechanism; 3. Fixed frame; 4. Material feeding assembly; 5. Mounting frame; 6. Material conveying assembly; 7. Rotary feeding assembly; 8. Side plate; 9. Auxiliary wheel; 10. Round tube; 11. Feeding funnel; 12. Rotating shaft; 13. First motor; 14. Spiral blade; 15. Round shaft; 16. Second motor; 17. Round roller; 18. Conveyor belt; 19. Mounting plate; 20. Main shaft; 21. Third motor; 22. Fixed shell; 23. Movable plate; 24. First spring; 25. Second spring; 26. Scraper; 27. Insert plate; 28. Positioning hole; 29. Slot; 30. Fixing bolt; 31. Blocking block; 32. First baffle; 33. Second baffle.
[0019] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION
[0020] A novel building exterior wall system and method provided by the present invention are described in detail below in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.
[0021] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).
[0022] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.
[0023] It will be understood that the meaning of “on,” “over,” and “above” in this disclosure should be interpreted in the broadest manner, so that “on” means not only “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” means not only “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.
[0024] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.
[0025] like Figure 1-10 As shown, an embodiment of the present invention provides a baler with a feeding transmission, including a baler main machine 1, on which a driving mechanism 2 is provided, which can realize the driving operation of the baler main machine 1, thereby facilitating the feeding operation of silage raw materials at different positions and improving the efficiency of baling processing; A fixed frame 3 is arranged at the front side of the baler mainframe 1, and a material feeding assembly 4 is arranged between the baler mainframe 1 and the fixed frame 3. The material feeding assembly 4 includes a circular tube 10, one end of the circular tube 10 is fixedly connected to the baler mainframe 1, and the other end of the circular tube 10 is fixedly connected to a feeding funnel 11, the feeding funnel 11 is fixed on the bottom surface of the fixed frame 3 and is arranged through the inner cavity of the fixed frame 3, a rotating shaft 12 is arranged in the circular tube 10, the bottom end of the rotating shaft 12 passes through the side wall of the circular tube 10 and is fixedly connected to a first motor 13, the first motor 13 is fixedly connected to the outer side wall of the circular tube 10, and a spiral blade 14 is fixedly connected to the side wall of the rotating shaft 12, which can continuously transport the gathered silage raw materials to the inside of the baler mainframe 1, thereby improving the baling efficiency of the silage raw materials; Among them, a blocking block 31 is fixedly connected to the front side wall of the fixed frame 3. The blocking block 31 is triangular in cross section, which can continuously push the silage raw materials to both sides and prevent the silage raw materials from overflowing after being gathered, and the use effect is good; The left and right sides of the fixed frame 3 are both installed with mounting frames 5, and the left and right side walls of the fixed frame 3 are both fixedly connected with plug plates 27. The mounting frame 5 is fixedly connected with the plug plate 27 on the side away from the fixed frame 3. The plug plate 27 is provided with a plurality of positioning holes 28. The side walls of the mounting frame 5 and the side plate 8 close to the fixed frame 3 are both provided with slots 29. The plug plates 27 and the slots 29 are both concave and matched with each other. The adjacent plug plates 27 and the slots 29 are plug-connected. A plurality of fixing bolts 30 are evenly distributed and threadedly connected on the side walls of the slots 29. The fixing bolts 30 are inserted into the positioning holes 28. A specified number of mounting frames 5 can be fixedly installed according to actual needs, so that the device can realize the feeding operation of silage raw materials within a specified range, thereby improving the feeding efficiency of silage raw materials. Among them, a first baffle 32 is fixedly connected to the bottom surface of the inner cavity of the installation frame 5, and the top surface of the first baffle 32 is arranged in an arc shape near the front side. The bottom surface of the installation frame 5 is located at the front side of the through groove and is fixedly connected to a second baffle 33. The first baffle 32 is used to block the silage raw materials entering the interior of the installation frame 5 to reduce leakage, and the second baffle 33 is used to push the silage raw materials on the ground to reduce the waste of silage raw materials. The front sides of the fixed frame 3 and the installation frame 5 are not closed, a through groove is provided on the bottom surface of the installation frame 5 and a material conveying assembly 6 is provided in the through groove, the material conveying assembly 6 comprises a circular shaft 15, two circular shafts 15 are symmetrically and movably connected in the through groove, one of the circular shafts 15 passes through the rear side wall of the installation frame 5 and is fixedly connected to a second motor 16, the second motor 16 is fixedly connected to the installation frame 5, and circular rollers 17 are fixedly connected to the side walls of the circular shafts 15, and the same conveyor belt 18 is sleeved on the two circular rollers 17, which can realize the continuous convergence operation of the silage raw materials entering the interior of the installation frame 5, and facilitate the baling operation of the silage raw materials; A side groove is provided on the side wall of the through groove close to the fixed frame 3, and a plurality of second springs 25 are fixedly connected in the side groove. The other ends of the plurality of second springs 25 are fixedly connected to the same scraper 26, and the scraper 26 is movably connected to the side groove. The scraper 26 extends out of the side groove away from one end of the second spring 25 and is arranged in a triangular shape, so that the residual silage raw materials on the conveyor belt 18 can be scraped off, thereby reducing the residual silage raw materials and having a good use effect. A rotary feeding assembly 7 is provided on the front side of the mounting frame 5. The rotary feeding assembly 7 includes a mounting plate 19. Two mounting plates 19 are fixedly connected symmetrically in the mounting frame 5. The mounting plates 19 are arranged in a T shape. A same main shaft 20 is movably connected between the two mounting plates 19. The end of the main shaft 20 away from the fixed frame 3 passes through the mounting plate 19 and is fixedly connected to a third motor 21. The third motor 21 is fixedly connected to the mounting plate 19. A number of fixed shells 22 are evenly distributed and fixedly connected on the side wall of the main shaft 20. A movable plate 23 is movably connected in the fixed shell 22. A first spring 24 is fixedly connected to the movable plate 23. The other end of the first spring 24 is fixedly connected to the inner wall of the fixed shell 22. The movable plate 23 extends out of the fixed shell 22 away from the end of the first spring 24 and the side wall is arranged in an arc shape, so that the crushed silage raw materials can be continuously moved, so that the external silage raw materials are continuously fed into the interior of the mounting frame 5, and an automated feeding operation is realized. A side plate 8 is installed on one side of the installation frame 5 away from the fixed frame 3 , and auxiliary wheels 9 are movably connected to the side plates 8 to provide auxiliary support for both sides of the installation frame 5 , making it easy to use.
[0026] A method for using a baler with a feeding transmission comprises the following steps: S1: Perform installation operations between a specified number of installation frames 5 and the fixed frame 3 according to actual needs, align the slots 29 on the installation frame 5 with the plug-in plates 27 on the fixed frame 3, so that the plug-in plates 27 are inserted into the slots 29, and tighten the fixing bolts 30 so that the fixing bolts 30 are inserted into the positioning holes 28 on the side walls of the plug-in plates 27, so as to realize the connection and installation between the installation frame 5 and the fixed frame 3. According to the above principle, the connection and installation between two adjacent installation frames 5 can be realized until a suitable number of installation frames 5 are installed, and a side plate 8 is installed on the installation frame 5 farthest from the fixed frame 3, so that the plug-in plates 27 on the installation frame 5 are inserted into the slots 29 on the side plates 8, and the side plates 8 are fixedly installed on the installation frame 5 by tightening the fixing bolts 30. At this time, the auxiliary support and movement of the installation frame 5 are realized by the auxiliary wheels 9 on the side plates 8; S2: The device is connected to a power source, and the baler main machine 1 is started. The device can be moved toward the side of the crushed silage raw material through the driving mechanism 2 on the baler main machine 1. The third motor 21 is started, and the third motor 21 drives the main shaft 20 to rotate. The main shaft 20 drives the fixed shell 22 and the movable plate 23 on the side wall to rotate counterclockwise. The silage can be continuously brought up through the rotation of the fixed shell 22 and the movable plate 23, and enters the installation frame 5 with the rotation of the main shaft 20 and the gravity of the silage raw material itself, thereby realizing the feeding operation of the silage raw material; S3: Start the second motor 16, the second motor 16 drives the round shaft 15 to rotate, the round shaft 15 drives the round roller 17 on its side wall to rotate, and the round roller 17 drives the conveyor belt 18 to rotate, and the conveyor belt 18 is used to continuously convey the silage raw materials entering the interior of the installation frame 5 to the inner cavity of the fixed frame 3. The silage raw materials entering the inner cavity of the fixed frame 3 will enter the interior of the feeding funnel 11 under the action of gravity; S4: starting the first motor 13, the first motor 13 drives the rotating shaft 12 to rotate, and the rotating shaft 12 drives the spiral blades 14 on the side wall thereof to rotate, and the silage raw materials entering the feeding hopper 11 can be continuously transported to the inside of the baler main machine 1 through the circular tube 10 through the rotation of the spiral blades 14, thereby completing the feeding operation of the baler main machine 1; S5: Through the operation of the internal equipment of the baler main machine 1, the silage raw materials are continuously gathered together and baled through a film to realize the baling function of the silage raw materials. The baled silage raw materials are discharged from the side of the baler main machine 1 away from the round tube 10, realizing the automated and efficient baling operation of the silage raw materials.
[0027] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.
[0028] A person skilled in the art will appreciate that all or part of the steps in the above-mentioned embodiment method can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc.
[0029] 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 principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.
Claims
1. A baler with a feeding drive, comprising a baler main machine (1), characterized in that: The baler main machine (1) is provided with a driving mechanism (2), a fixed frame (3) is provided on the front side of the baler main machine (1), a material feeding assembly (4) is provided between the baler main machine (1) and the fixed frame (3), mounting frames (5) are installed on the left and right sides of the fixed frame (3), the front sides of the fixed frame (3) and the mounting frame (5) are not closed, a through slot is provided on the bottom surface of the mounting frame (5) and a material conveying assembly (6) is provided in the through slot, a rotating feeding assembly (7) is provided on the front side of the mounting frame (5), and a side plate (8) is installed on the side of the mounting frame (5) away from the fixed frame (3), and an auxiliary wheel (9) is movably connected to the side plate (8).
2. A baler with a feeding drive according to claim 1, characterized in that: The material feeding assembly (4) comprises a circular tube (10), one end of the circular tube (10) is fixedly connected to the baler main machine (1), the other end of the circular tube (10) is fixedly connected to a feeding funnel (11), the feeding funnel (11) is fixed to the bottom surface of the fixed frame (3) and is arranged to be connected with the inner cavity of the fixed frame (3), a rotating shaft (12) is arranged in the circular tube (10), the bottom end of the rotating shaft (12) passes through the side wall of the circular tube (10) and is fixedly connected to a first motor (13), the first motor (13) is fixedly connected to the outer wall of the circular tube (10), and a spiral blade (14) is fixedly connected to the side wall of the rotating shaft (12).
3. A baler with feeding transmission according to claim 2, characterized in that: The material conveying assembly (6) comprises a circular shaft (15), two circular shafts (15) are symmetrically and movably connected in the through groove, one of the circular shafts (15) passes through the rear side wall of the mounting frame (5) and is fixedly connected to a second motor (16), the second motor (16) is fixedly connected to the mounting frame (5), and circular rollers (17) are fixedly connected to the side walls of the circular shaft (15), and the same conveyor belt (18) is sleeved on the two circular rollers (17).
4. A baler with a feeding drive according to claim 3, characterized in that: The rotary feeding assembly (7) comprises a mounting plate (19), two mounting plates (19) are symmetrically fixedly connected in the mounting frame (5), the mounting plates (19) are arranged in a T-shape, a main shaft (20) is movably connected between the two mounting plates (19), an end of the main shaft (20) away from the fixed frame (3) passes through the mounting plate (19) and is fixedly connected to a third motor (21), and the third motor (21) is fixedly connected to the mounting plate (19).
5. A baler with a feeding drive according to claim 4, characterized in that: A plurality of fixed shells (22) are evenly distributed and fixedly connected on the side wall of the main shaft (20), and movable plates (23) are movably connected inside the fixed shells (22). A first spring (24) is fixedly connected to the movable plates (23), and the other end of the first spring (24) is fixedly connected to the inner side wall of the fixed shell (22). The movable plate (23) extends out of the fixed shell (22) away from one end of the first spring (24), and the side wall is arranged in an arc shape.
6. A baler with a feeding drive according to claim 5, characterized in that: A side groove is formed on a side wall of the through groove close to the fixed frame (3), and a plurality of second springs (25) are fixedly connected in the side groove. The other ends of the plurality of second springs (25) are fixedly connected to a same scraper (26), and the scraper (26) is movably connected to the side groove. The scraper (26) extends out of the side groove away from one end of the second spring (25) and is arranged in a triangular shape.
7. A baler with a feeding drive according to claim 6, characterized in that: The left and right side walls of the fixed frame (3) are both fixedly connected with plug plates (27), and the side of the installation frame (5) away from the fixed frame (3) is fixedly connected with the plug plate (27), and the plug plate (27) is provided with a plurality of positioning holes (28).
8. A baler with a feeding drive according to claim 7, characterized in that: The side walls of the installation frame (5) and the side plate (8) close to the fixed frame (3) are both provided with slots (29); the plug plates (27) and the slots (29) are both concave and matched with each other; adjacent plug plates (27) and slots (29) are plug-connected; a plurality of fixing bolts (30) are evenly distributed and threadedly connected on the side walls of the slots (29); the fixing bolts (30) are inserted into the positioning holes (28).
9. A baler with a feeding drive according to claim 8, characterized in that: A blocking block (31) is fixedly connected to the front side wall of the fixed frame (3), and the blocking block (31) has a triangular cross section.
10. A baler with a feeding drive according to claim 9, characterized in that: A first baffle (32) is fixedly connected to the bottom surface of the inner cavity of the installation frame (5); the top surface of the first baffle (32) is arranged in an arc shape near the front side; and a second baffle (33) is fixedly connected to the bottom surface of the installation frame (5) at the front side of the through slot.