Straw cutting and anti-winding integrated device for biomass fuel

Abstract

The application discloses a straw cutting and anti-winding integrated device for biomass fuel, and belongs to the field of biomass fuel processing equipment, which solves the problems of easy winding, low cutting precision and poor running stability of the existing straw cutting mechanism. The device comprises a mounting frame, a driving assembly, a rotary cutting assembly, a floating cutting assembly and a floating baffle assembly. The driving assembly drives an output driving shaft to drive the rotary cutting assembly to operate. The output driving shaft drives the floating cutting assembly through a gear reverser. The two are vertically arranged. The floating baffle assembly is hinged to the lower part of the mounting frame and below the rotary cutting assembly. The application adopts a double-stage cutting structure, cooperates with the anti-winding and buffering design, realizes accurate straw cutting and whole-process anti-winding, and has uniform cutting length. The device is stable in operation, low in maintenance cost, high in operation efficiency, and suitable for the large-scale processing of biomass fuel straw raw materials.

Description

Technical Field

[0001] This invention relates to the field of biomass fuel processing equipment technology, and in particular to an integrated device for cutting and preventing tangling of straw for biomass fuel. Background Technology

[0002] Straw, as agricultural and forestry waste, is an important renewable raw material for the production of biomass fuel. Efficient cutting and anti-tangling treatment are core technological processes for the large-scale production of biomass fuel. In the prior art, utility model patent CN208597327U discloses a crop straw cutting mechanism. This mechanism consists of a frame, a cutting rotor, a cutting block, and a guide servo rotor. By arranging the cutting blades at intervals along the circumferential tangent of the cutting rotor, it achieves the cutting and dragging collection of straw, demonstrating a certain cutting effect in the initial operation of cutting crop straw as it is pulled in the field.

[0003] However, the existing straw cutting mechanism was originally designed for primary processing of straw in agricultural fields. When applied to the deep processing stage of straw in biomass fuel production, it suffers from insurmountable technical defects: First, the mechanism uses a single-stage cutting structure, which can only achieve one-time cutting of straw. The uniformity of the cut length is poor, which cannot meet the standardized requirements for the length of straw raw materials in biomass fuel production. A secondary processing step is required, which significantly increases the processing cost. Second, the mechanism lacks a dedicated anti-winding structure design. During operation, straw is easily entangled in rotating parts such as the cutting rotor, resulting in frequent jamming and shutdown of the equipment, a high failure rate, and difficulty in adapting to the large-scale continuous operation requirements of biomass fuel processing. Third, the mechanism lacks an adaptive buffer structure. When dealing with various types of straw with different thicknesses and hardness in biomass fuel processing, the cutter bears a large impact load, which easily leads to wear and breakage. The equipment maintenance cost remains high, and the lack of a targeted anti-jamming design at the feeding end further reduces the overall operating efficiency.

[0004] In response to the technical problems of existing straw cutting mechanisms in biomass fuel straw processing, such as easy tangling, low cutting accuracy, and poor operational stability, there is an urgent need to develop a straw processing equipment that combines precise cutting, efficient anti-tangling, and adaptive buffering to achieve integrated straw cutting and anti-tangling operations, in order to meet the process requirements of large-scale biomass fuel production. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide an integrated straw cutting and anti-tangling device for biomass fuel. It is applied to the problems of easy tangling, low cutting accuracy and poor operation stability in biomass fuel processing, and realizes two-stage precise cutting and full-process anti-tangling of straw, thereby improving the efficiency of straw cutting operation and the qualified rate of finished products, and reducing equipment maintenance costs.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] This invention provides an integrated straw cutting and anti-tangling device for biomass fuel, comprising a mounting frame, a drive assembly, a rotary cutting assembly, a floating chopping assembly, and a floating baffle assembly. The drive assembly is fixedly installed on one outer wall of the mounting frame, the rotary cutting assembly is horizontally arranged inside the mounting frame, and the rotary cutting assembly is fixedly connected to the output drive shaft of the drive assembly. A commutator is fixedly provided in the middle of the output drive shaft, and the output end of the commutator is connected to the floating chopping assembly. The floating chopping assembly and the rotary cutting assembly are arranged vertically. The floating baffle assembly is hinged to the lower part of the mounting frame and located below the rotary cutting assembly.

[0008] As a preferred embodiment of the present invention, the drive assembly includes a drive motor, a drive pulley, a driven pulley, and a motor mount; the drive motor is fixed to the outer wall of the mounting frame via the motor mount, and the output shaft of the drive motor is coaxially and fixedly connected to the drive pulley; the drive pulley and the driven pulley are connected by a transmission belt, and both are located on the same side of the mounting frame; the output drive shaft is laterally spanned across both ends of the mounting frame and rotatably connected to the mounting frame, and one end of the output drive shaft extends to the outer side of the mounting frame and is coaxially and fixedly connected to the driven pulley.

[0009] As a preferred technical solution of the present invention, the rotary cutting assembly includes several rotary cutting blade holders and several sets of rotary cutting blades; the several rotary cutting blade holders are arranged at equal intervals along the axial direction of the output drive shaft, and each rotary cutting blade holder is coaxially and fixedly connected to the output drive shaft; each set of rotary cutting blades is fixed to the outer wall of the corresponding rotary cutting blade holder by bolts, and is evenly distributed circumferentially with the axis of the rotary cutting blade holder as the center, the blade of the rotary cutting blade faces the straw feeding side, the rotary cutting blade has an arc-shaped blade structure, and a straw passage gap is left between adjacent rotary cutting blades.

[0010] As a preferred embodiment of the present invention, the commutator is a gear commutator, with its input end fixedly sleeved on the middle of the output drive shaft and its output end fixedly connected to the cutting shaft; the floating cutting assembly includes a transition bearing, a buffer spring, a cutting tool holder, and a cutting tool; the transition bearing is sleeved on the outside of the cutting shaft and fixedly connected to the cutting shaft, with one end of the buffer spring abutting against the end face of the transition bearing and the other end abutting against the inner sidewall of the commutator; the cutting tool holder is fixed on the outside of the transition bearing, and the cutting tools are symmetrically fixed on the surface of the cutting tool holder.

[0011] As a preferred embodiment of the present invention, the floating baffle assembly includes two hinge seats, two hydraulic buffers, an elastic baffle, and a pin; the two hinge seats are symmetrically fixed to the lower inner side of the mounting frame, and the two ends of the hydraulic buffer are respectively hinged to the hinge seats and the elastic baffle; the two ends of the elastic baffle are hinged to the inner sidewall of the mounting frame through the pin.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. It adopts a two-stage cutting structure with vertical combination of rotary cutting and chopping. Compared with the traditional single-stage shearing structure, it realizes the integrated operation of straw pre-cutting and precise chopping. The uniformity of the cut section length is significantly improved, and it can be directly used as a biomass fuel raw material, eliminating the need for secondary processing and effectively reducing processing costs. 2. By combining the gap design of the arc-shaped blade rotary cutter with the floating baffle assembly below the rotary cutter, a double anti-tangling protection is formed from the straw cutting end and the falling end, which completely solves the problem of easy tangling of rotating parts in traditional mechanisms, greatly reduces the equipment jamming and downtime failure rate, and ensures large-scale continuous operation. 3. A buffer spring is added to the floating cutting assembly to adapt to the feeding resistance of straws of different thicknesses and hardnesses, effectively reducing the impact load on the blades. Compared with the traditional non-buffered structure, this significantly extends the service life of the blades and transmission components and reduces equipment maintenance costs. 4. By combining a single drive component with a gear commutator, the rotary cutting component and the floating chopping component are driven synchronously. The overall structure is compact and the transmission path is simple. With anti-tangling and buffer design, the feeding is smooth and the operation efficiency is greatly improved. It is suitable for large-scale processing scenarios of biomass fuel straw raw materials. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is the front view of the present invention; Figure 3 This is a top view of the present invention; Figure 4 This is a side view of the present invention; Figure 5 This is a cross-sectional structural schematic diagram of the present invention; In the diagram: 1. Mounting bracket; 2. Drive assembly; 3. Rotary cutting assembly; 4. Floating cutting assembly; 5. Floating baffle assembly; 21. Output drive shaft; 22. Drive motor; 23. Drive pulley; 24. Driven pulley; 25. Commutator; 26. Motor mount; 27. Transmission belt; 31. Rotary cutting blade holder; 32. Rotary cutting blade; 33. Bolt; 41. Cutting shaft; 42. Adapter bearing; 43. Buffer spring; 44. Cutting blade holder; 45. Cutting blade; 51. Hinge seat; 52. Hydraulic buffer; 53. Elastic baffle; 54. Pin. Detailed Implementation

[0014] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0015] In the attached diagram, all identical reference numerals refer to the same components.

[0016] Example 1 like Figure 1-5 As shown, the integrated straw cutting and anti-tangling device for biomass fuel in this embodiment includes a mounting frame 1, a drive assembly 2, a rotary cutting assembly 3, a floating cutting assembly 4, and a floating baffle assembly 5. The drive assembly 2 is fixedly installed on one outer wall of the mounting frame 1. The rotary cutting assembly 3 is horizontally arranged inside the mounting frame 1. The rotary cutting assembly 3 is fixedly connected to the output drive shaft 21 of the drive assembly 2. A commutator 25 is fixedly installed in the middle of the output drive shaft 21. The output end of the commutator 25 is connected to the floating cutting assembly 4. The floating cutting assembly 4 and the rotary cutting assembly 3 are arranged vertically. The floating baffle assembly 5 is hinged to the lower part of the mounting frame 1 and is located below the rotary cutting assembly 3.

[0017] like Figure 3 As shown, the drive assembly 2 includes a drive motor 22, a drive pulley 23, a driven pulley 24, and a motor mount 26. The drive motor 22 is fixed to the outer wall of the mounting frame 1 via the motor mount 26. The output shaft of the drive motor 22 is coaxially and fixedly connected to the drive pulley 23. The drive pulley 23 and the driven pulley 24 are connected by a transmission belt 27. The drive pulley 23 and the driven pulley 24 are both located on the same side of the mounting frame 1. The output drive shaft 21 is transversely mounted across both ends of the mounting frame 1 and is rotatably connected to the mounting frame 1. One end of the output drive shaft 21 extends to the outer side of the mounting frame 1 and is coaxially and fixedly connected to the driven pulley 24. The drive assembly 2 provides power for the overall operation of the equipment and achieves smooth power transmission through belt drive.

[0018] The rotary cutting assembly 3 includes several rotary cutting blade holders 31 and several sets of rotary cutting blades 32. The rotary cutting blade holders 31 are evenly spaced along the axial direction of the output drive shaft 21. Each rotary cutting blade holder 31 is coaxially and fixedly connected to the output drive shaft 21. Each set of rotary cutting blades 32 is fixed to the outer wall of the corresponding rotary cutting blade holder 31 by bolts 33. Each set of rotary cutting blades 32 is evenly distributed circumferentially with the axis of the rotary cutting blade holder 31 as the center. The blades of the rotary cutting blades 32 face the straw feeding side. The rotary cutting blades 32 have an arc-shaped blade structure. There is a gap between adjacent rotary cutting blades 32 for straw to pass through. The rotary cutting assembly 3 rotates with the output drive shaft 21 to realize the rotary cutting and pre-cutting of straw. The arc-shaped blade reduces the straw cutting resistance, and the gap design avoids straw from getting tangled between the rotary cutting blade holder 31 and the output drive shaft 21.

[0019] like Figure 5 As shown, the commutator 25 is a gear commutator, with its input end fixedly sleeved in the middle of the output drive shaft 21 and its output end fixedly connected to the cutting shaft 41, realizing the power reversal from horizontal rotation to vertical rotation, and providing operating power for the floating cutting assembly 4. The floating cutting assembly 4 includes a transition bearing 42, a buffer spring 43, a cutting blade holder 44, and a cutting blade 45. The transition bearing 42 is sleeved on the outside of the cutting shaft 41 and fixedly connected to the cutting shaft 41. One end of the buffer spring 43 abuts against the end face of the transition bearing 42, and the other end abuts against the inner wall of the commutator 25. The cutting blade holder 44 is fixed on the outside of the transition bearing 42, and the cutting blade 45 is symmetrically fixed on the surface of the cutting blade holder 44. The floating cutting assembly 4 rotates with the cutting shaft 41 to complete the precise cutting of the pre-cut straw. The buffer spring 43 can adaptively extend and retract to adjust the position of the cutting blade holder 44, counteract the resistance impact of the straw feeding, avoid jamming, and protect the cutting blade 45.

[0020] like Figure 4 As shown, the floating baffle assembly 5 includes two hinge seats 51, two hydraulic buffers 52, an elastic baffle 53, and a pin 54. The two hinge seats 51 are symmetrically fixed to the lower inner side of the mounting frame 1. The two ends of the hydraulic buffers 52 are hinged to the hinge seats 51 and the elastic baffles 53, respectively. The two ends of the elastic baffles 53 are hinged to the inner wall of the mounting frame 1 through the pin 54. The elastic baffles 53 are made of wear-resistant elastic material. The elastic baffles 53 form a protective barrier for the falling straw, preventing the straw from wrapping around the rotating parts inside the mounting frame 1. The hydraulic buffers 52 provide buffer support for the elastic baffles 53, adapting to the impact of falling straw. The elastic baffles 53 can rotate slightly around the pin 54, ensuring that the straw falls smoothly while continuously playing an anti-tangling role.

[0021] In this embodiment, when the equipment is in operation, the drive motor 22 starts and drives the active pulley 23 to rotate, which in turn drives the driven pulley 24 to rotate via the transmission belt 27, thereby driving the output drive shaft 21 to rotate. The output drive shaft 21 synchronously drives the rotary cutting assembly 3 and the commutator 25 to rotate. The commutator 25 drives the cutting shaft 41 to rotate the floating cutting assembly 4. After the straw enters from the feed side, it is pre-cut by the rotary cutting assembly 3 and precisely cut by the floating cutting assembly 4. During the falling process, the floating baffle assembly 5 provides anti-tangling protection. Finally, the cut straw is discharged from the discharge side, completing the integrated cutting and anti-tangling operation.

[0022] Example 2 Based on Example 1, this embodiment optimizes the arrangement density of the rotary cutting blades 32 in the rotary cutting assembly 3. Each set of rotary cutting blade holders 31 has four sets of rotary cutting blades 32 arranged circumferentially, and the spacing between adjacent rotary cutting blade holders 31 is equal. The curvature of the arc-shaped blade of the rotary cutting blade 32 is adapted to the cutting requirements of common agricultural and forestry straw. This design further improves the efficiency of rotary cutting and pre-cutting, making the length of the pre-cut straw more uniform. Combined with the cutting blades 45 of the floating cutting assembly 4, it can achieve precise cutting of short straw sections required for biomass fuel processing. At the same time, the evenly spaced rotary cutting blade holders 31 ensure that the output drive shaft 21 is subjected to uniform force, improving the stability of equipment operation.

[0023] The structure, connection relationship and function of the remaining parts are the same as those in Example 1, and the overall operation process of the equipment is the same as that in Example 1.

[0024] Example 3 Based on Example 1, this embodiment makes adaptation adjustments to the buffer spring 43 of the floating cutting component 4 and the hydraulic buffer 52 of the floating baffle component 5. The elastic coefficient of the buffer spring 43 is adapted to the cutting resistance of hard straw, and the buffer stroke of the hydraulic buffer 52 is adapted to the impact force of the straw falling. The elastic baffle 53 is made of wear-resistant elastic material to improve its anti-tangling protection service life.

[0025] This design allows the equipment to be adapted to the processing of hard straws such as corn stalks and cotton stalks. The buffer spring 43 can effectively offset the cutting resistance of hard straws and prevent the cutting blade 45 from wearing out. The hydraulic buffer 52 and the wear-resistant elastic baffle 53 can cope with the large impact of falling hard straws and continuously play a stable anti-tangling role. The structure, connection relationship and function of the remaining parts are the same as those in Example 1. The overall operation process of the equipment remains unchanged and can meet the biomass fuel processing needs of straws of different materials.

[0026] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An integrated device for cutting and preventing tangling of straw for biomass fuel, characterized in that, The assembly includes a mounting frame (1), a drive assembly (2), a rotary cutting assembly (3), a floating cutting assembly (4), and a floating baffle assembly (5). The drive assembly (2) is fixedly installed on one side of the outer wall of the mounting frame (1). The rotary cutting assembly (3) is horizontally arranged inside the mounting frame (1) and is fixedly connected to the output drive shaft (21) of the drive assembly (2). A commutator (25) is fixedly provided in the middle of the output drive shaft (21). The output end of the commutator (25) is connected to the floating cutting assembly (4) for transmission. The floating cutting assembly (4) and the rotary cutting assembly (3) are arranged vertically. The floating baffle assembly (5) is hinged to the lower part of the mounting frame (1) and is located below the rotary cutting assembly (3).

2. The integrated straw cutting and anti-tangling device for biomass fuel according to claim 1, characterized in that, The drive assembly (2) includes a drive motor (22), a drive pulley (23), a driven pulley (24), and a motor mount (26). The drive motor (22) is fixed to the outer wall of the mounting frame (1) via the motor mount (26), and the output shaft of the drive motor (22) is coaxially and fixedly connected to the drive pulley (23). The drive pulley (23) and the driven pulley (24) are connected by a transmission belt (27), and both are located on the same side of the mounting frame (1). The output drive shaft (21) is transversely spanned across both ends of the mounting frame (1) and is rotatably connected to the mounting frame (1). One end of the output drive shaft (21) extends to the outside of the mounting frame (1) and is coaxially and fixedly connected to the driven pulley (24).

3. The integrated straw cutting and anti-tangling device for biomass fuel according to claim 2, characterized in that, The rotary cutting assembly (3) includes several rotary cutting blade holders (31) and several sets of rotary cutting blades (32); several rotary cutting blade holders (31) are arranged at equal intervals along the axial direction of the output drive shaft (21), and each rotary cutting blade holder (31) is coaxially fixedly connected to the output drive shaft (21); each set of rotary cutting blades (32) is fixed to the outer wall of the corresponding rotary cutting blade holder (31) by bolts (33), and is evenly distributed circumferentially with the axis of the rotary cutting blade holder (31) as the center, and the blades of the rotary cutting blades (32) face the straw feeding side.

4. The integrated straw cutting and anti-tangling device for biomass fuel according to claim 3, characterized in that, The rotary cutting tool (32) has an arc-shaped blade structure, and there is a gap between adjacent rotary cutting tools (32) for straw to pass through. The gap width meets the straw feeding requirements for biomass fuel processing.

5. The integrated straw cutting and anti-tangling device for biomass fuel according to claim 2, characterized in that, The commutator (25) is a gear commutator, with its input end fixedly sleeved in the middle of the output drive shaft (21) and its output end fixedly connected to the cut-off shaft (41).

6. The integrated straw cutting and anti-tangling device for biomass fuel according to claim 5, characterized in that, The floating cutting assembly (4) includes a transition bearing (42), a buffer spring (43), a cutting tool holder (44), and a cutting tool (45). The transition bearing (42) is sleeved on the outside of the cutting shaft (41) and fixedly connected to the cutting shaft (41). One end of the buffer spring (43) abuts against the end face of the transition bearing (42), and the other end abuts against the inner wall of the commutator (25). The cutting tool holder (44) is fixed on the outside of the transition bearing (42), and the cutting tool (45) is symmetrically fixed on the surface of the cutting tool holder (44).

7. The integrated straw cutting and anti-tangling device for biomass fuel according to claim 1, characterized in that, The floating baffle assembly (5) includes two hinge seats (51), two hydraulic buffers (52), an elastic baffle (53), and a pin (54); the two hinge seats (51) are symmetrically fixed to the lower inner side of the mounting frame (1), and the two ends of the hydraulic buffer (52) are hinged to the hinge seats (51) and the elastic baffle (53) respectively; the two ends of the elastic baffle (53) are hinged to the inner wall of the mounting frame (1) through the pin (54).

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