Straw smashing device

Abstract

The utility model is suitable for the technical field of straw processing, and provides a straw smashing device which comprises a base plate, a smashing box is fixedly installed at the top of the base plate, and a smashing roller is rotatably installed in the smashing box and used for smashing straw. The guide hopper is fixedly mounted in the crushing box, the discharge end of the guide hopper extends out of the crushing box, and the guide hopper is used for guiding and conveying straw needing secondary crushing; the material lifting barrel is fixedly communicated with the discharging end of the material guiding hopper, the discharging end of the material lifting barrel is connected with a material returning opening of the smashing box through a material guiding pipe, and a spiral rod is rotationally installed in the material lifting barrel and used for lifting straw needing secondary smashing. According to the straw smashing device provided by the scheme, the problem that the labor burden of workers is large due to the fact that straw which is not thoroughly smashed after being smashed by an existing straw smashing device needs to be manually taken and fed again to be smashed is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of straw processing, in particular to a straw crushing device. Background Art

[0002] Straw is a waste generated in large quantities during agricultural production, and its treatment has always been an important issue facing the agricultural field. Traditionally, straw is mostly treated by burning. Although this method is simple and direct, it has brought about many serious environmental pollution problems, such as large amounts of smoke and dust emissions leading to deterioration in air quality and causing smog weather, which poses a great threat to the ecological environment balance and human health.

[0003] With the increasing awareness of environmental protection and the deepening of the concept of sustainable development, the recycling of straw has become a mainstream trend. Among them, processing straw into biofertilizer is a very promising way of utilization. In the processing process of making straw into biofertilizer, crushing is the first and key step.

[0004] At present, the existing straw crushing device, such as the straw crushing device disclosed in the patent with the authorization number CN221128018U, includes a base, and the upper part of the base is provided with a crushing box, a screening mechanism and a collecting tray in sequence from top to bottom. Through the cooperation between the various components, the screening function of straw particles of different sizes can be realized, which effectively avoids the situation that the straw particles after crushing are of different sizes, thereby preventing the low fermentation efficiency in the later stage due to the presence of large straw particles, and ensuring the processing efficiency of natural organic fertilizer. However, the device still has obvious defects in actual application. After the initial crushing, the straw that has not been completely crushed needs to be manually taken out and re-fed and crushed. In large-scale straw processing operations, this operation requires personnel to frequently travel back and forth between the device and the storage place for uncrushed straw, which greatly increases the labor burden of personnel. Utility Model Content

[0005] The utility model provides a straw crushing device, which aims to solve the problem that in the current straw crushing device, straw that has not been completely crushed needs to be manually taken out and re-fed for crushing, which causes a heavy labor burden on the personnel.

[0006] The utility model is implemented as follows: a straw crushing device comprises: a base plate, a crushing box is fixedly installed on the top of the base plate, a crushing roller is rotatably installed in the crushing box for crushing and processing straw; a guide hopper is fixedly installed in the crushing box, the discharge end of the guide hopper extends out of the crushing box, and is used to guide the straw that needs secondary crushing; a lifting cylinder is fixedly connected to the discharge end of the guide hopper, the discharge end of the lifting cylinder is connected to the return port of the crushing box through a guide pipe, and a spiral rod is rotatably installed in the lifting cylinder for lifting the straw that needs secondary crushing; a screen plate is arranged in the crushing box for screening the crushed straw, one end of the screen plate extends into the guide hopper; a driving mechanism is arranged on the crushing box and the base plate, for driving the spiral rod and the crushing roller to rotate; a vibration mechanism is arranged on the crushing box and the screen plate, for controlling the ups and downs vibration of the screen plate.

[0007] Preferably, the driving mechanism includes: an installation box fixedly mounted on the base plate, a motor and a first reducer are arranged in the installation box, the output shaft of the motor and the output shaft of the first reducer are transmitted through first bevel gears that are fixedly mounted and meshed with each other, and the output shaft of the first reducer is fixedly connected to the shaft of the screw rod through a coupling; a second reducer fixedly mounted on the top of the crushing box, second bevel gears are fixedly mounted on the input shaft of the second reducer and the shaft of the screw rod, and the two second bevel gears are meshed with each other for transmission; a transmission rod fixedly mounted on the output shaft of the second reducer; and third bevel gears fixedly mounted on the transmission rod and the shaft of the crushing roller and meshed with each other, for driving the crushing roller to rotate.

[0008] Preferably, the vibration mechanism includes: a sliding rod fixedly installed in the crushing box, a sliding sleeve on the sliding rod is provided with an assembly block, and the assembly block is fixedly connected to the screen plate; a spring and a damping sleeve mounted on the sliding rod for buffering; and a vibrator fixedly installed at the bottom of the screen plate.

[0009] Preferably, the crushing box is fixedly connected to a feed hopper, and the top of the feed hopper is hinged with an openable and closable cover to prevent straw from splashing.

[0010] Preferably, the crushing box is fixedly connected with a discharge pipe for discharging the crushed and screened straw, and a cloth bag is provided at the discharge end of the discharge pipe for collecting the crushed straw to prevent debris from scattering.

[0011] Preferably, the crushing box and the lifting barrel are fixedly mounted with a same protective shell for shielding and protecting the second reducer, the second bevel gear, the transmission rod and the third bevel gear.

[0012] Preferably, a material guide plate is fixedly mounted on the inner wall of the crushing box for guiding the straw discharged from the return port into the crushing chamber, and a non-slip foot pad is fixedly mounted on the bottom of the base plate.

[0013] Compared with the related art, the straw crushing device provided by the utility model has the following beneficial effects:

[0014] The crushing box provides a closed space for centralized straw processing, accommodating related components to complete crushing and preliminary screening, reducing pollution; the crushing roller crushes the straw forcefully to change its shape, which has a key impact on the crushing effect and capacity of the device; the screen screens the crushed straw to ensure particle uniformity, separates the straw that needs secondary crushing, and improves the fermentation efficiency of biofertilizer; the guide hopper collects the straw that needs secondary crushing and exports it; the lifting barrel cooperates with the guide hopper to receive and automatically lift it through the spiral rod, improving the degree of automation; the spiral rod rotates to push the straw back to the crushing box, ensuring material circulation, saving manpower and improving efficiency; the guide pipe ensures the smooth return of the secondary crushed straw, making the processing process coherent and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of a straw crushing device provided by the utility model;

[0016] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0017] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of part A shown in FIG;

[0018] Figure 4 It is a structural schematic diagram of the screen plate in this utility model.

[0019] Figure numerals: 1. Base plate; 2. Crushing box; 3. Crushing roller; 4. Guide hopper; 5. Lifting cylinder; 6. Screw rod; 7. Guide pipe; 8. Screen plate; 9. Mounting box; 10. Motor; 11. First reducer; 12. First bevel gear; 13. Second reducer; 14. Second bevel gear; 15. Transmission rod; 16. Third bevel gear; 17. Slide rod; 18. Assembly block; 19. Spring; 20. Damping sleeve; 21. Vibrator; 22. Feed hopper; 23. Cover plate; 24. Discharge pipe; 25. Cloth bag; 26. Protective shell; 27. Guide plate. DETAILED DESCRIPTION

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0021] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] The present invention provides a straw crushing device. Figure 1-4 The hopper 4 is fixedly mounted on the top of the hopper 4, and a pulverizing roller 3 is rotatably mounted in the pulverizing box 2 for pulverizing and processing the straw; a guide hopper 4 is fixedly mounted in the pulverizing box 2, and the discharge end of the guide hopper 4 extends out of the pulverizing box 2 for guiding the straw that needs to be secondary pulverized; a lifting cylinder 5 is fixedly connected to the discharge end of the guide hopper 4, and the discharge end of the lifting cylinder 5 is connected to the return port of the pulverizing box 2 through a guide pipe 7, and a spiral rod 6 is rotatably mounted in the lifting cylinder 5 for lifting the straw that needs secondary pulverization; a sieve plate 8 is arranged in the pulverizing box 2 for screening the pulverized straw, and one end of the sieve plate 8 extends into the guide hopper 4; a driving mechanism is arranged on the pulverizing box 2 and the base plate 1 for driving the spiral rod 6 and the pulverizing roller 3 to rotate; a vibration mechanism is arranged on the pulverizing box 2 and the sieve plate 8 for controlling the undulating vibration of the sieve plate 8.

[0023] In this embodiment, the base plate 1 serves as the fundamental support structure for the entire device, providing a stable mounting platform for the crushing box 2 and other components, ensuring smooth operation and preventing any shaking or instability that could affect the accuracy and efficiency of operations such as crushing and screening. The crushing box 2 provides a relatively enclosed workspace for operations such as crushing, screening, and guiding straw, preventing straw from scattering during processing, facilitating centralized processing and reducing pollution to the surrounding environment. Furthermore, its rational internal structural design accommodates components such as the crushing roller 3, the guide hopper 4, and the screen plate 8, enabling these components to work together to complete the crushing and preliminary screening of the straw. The crushing roller 3 rotates to powerfully crush the straw placed in the crushing box 2. Its high-speed rotation cuts and tears the straw into smaller particles or fragments, changing its volume and shape for subsequent screening and further processing. The efficient crushing capacity of the crushing roller 3 is key to achieving initial straw processing, directly impacting the crushing effect and processing capacity of the entire device. During the crushing process, when the screen plate 8 screens out larger, incompletely crushed straw particles, the guide hopper 4 collects these straw particles that require secondary crushing and guides them out of the crushing box 2. Its unique shape and position allow the straw to slide smoothly from one end of the screen plate 8 into the guide hopper 4 and move toward the lifting drum 5 under the action of gravity, ensuring the orderly transfer of material and preparing for the subsequent lifting and secondary crushing processes. The lifting drum 5 cooperates with the guide hopper 4 to receive the straw that requires secondary crushing from the guide hopper 4. The space inside the lifting drum 5 provides a channel for temporary storage and lifting of the straw, allowing it to be transported upward by the action of the spiral rod 6. This device solves the problem of straw requiring secondary shredding having difficulty automatically returning to the shredding bin 2 for further processing, eliminating the tedious manual handling and improving the overall automation of the device. A screw 6 is rotatably mounted within the lifting barrel 5. As the screw 6 rotates, its spiral blades gradually push the straw at the bottom of the lifting barrel 5 upward. Working in conjunction with the lifting barrel 5, this device automatically lifts the straw requiring secondary shredding. After the straw is lifted from a lower position to a certain height, it is returned to the shredding bin 2 via a guide pipe 7, ensuring continuous material circulation within the device, saving labor costs and improving work efficiency. The guide pipe 7 serves as a channel connecting the discharge end of the lifting barrel 5 with the return port of the shredding bin 2, providing a precise conveying path for the straw lifted by the screw 6. This ensures that straw requiring secondary shredding can smoothly reenter the shredding bin 2, preventing leakage or scattering during transfer, and making the entire straw processing process more consistent and efficient. A sieve plate 8 is installed within the shredding bin 2 to screen the shredded straw. It has a certain pore size, which can allow smaller straw particles that meet the requirements to pass through, while intercepting larger straw particles that do not meet the crushing standards.The screening function of the sieve plate 8 is a key step in ensuring the uniformity of the crushed straw particles. This screening process separates straw of different particle sizes, allowing qualified straw particles to enter the next processing step, while unqualified straw particles are collected by the guide hopper 4 for secondary crushing, thereby improving the fermentation efficiency and product quality of the final biofertilizer production process. The drive mechanism is installed on the crushing box 2 and the base plate 1, and is used to drive the screw rod 6 and the crushing roller 3 to rotate. By providing a stable power source, it ensures that the crushing roller 3 can continuously crush the straw, while the screw rod 6 can rotate at a predetermined speed and direction to complete the delivery of straw that requires secondary crushing. The rational design and operation of the drive mechanism ensures the coordinated operation of all components of the entire device, improves the reliability and stability of the device, and reduces failures and downtime caused by insufficient or unstable power. The vibration mechanism is installed on the crushing box 2 and the sieve plate 8 to control the undulating vibration of the sieve plate 8. During the screening process, the vibration mechanism causes the screen plate 8 to vibrate, and this vibration can prevent straw particles from clogging the screen holes on the screen plate 8, thereby improving the screening efficiency. In summary, the straw crushing device of the utility model effectively solves the problem of heavy labor burden and affected work efficiency caused by the existing straw crushing device in that the straw that has not been completely crushed needs to be manually picked up and re-fed for crushing after crushing, through the close cooperation and coordinated work between the various components, thereby improving the degree of automation of the straw crushing process and the overall work efficiency.

[0024] In a further preferred embodiment of the present invention, the driving mechanism includes: an installation box 9 fixedly mounted on the base plate 1, a motor 10 and a first reducer 11 are arranged in the installation box 9, the output shaft of the motor 10 and the output shaft of the first reducer 11 are transmitted through a first bevel gear 12 fixedly mounted and meshing with each other, and the output shaft of the first reducer 11 is fixedly connected to the shaft of the screw rod 6 through a coupling; a second reducer 13 fixedly mounted on the top of the crushing box 2, the input shaft of the second reducer 13 and the shaft of the screw rod 6 are fixedly mounted with second bevel gears 14, and the two second bevel gears 14 are meshed with each other for transmission; a transmission rod 15 fixedly mounted on the output shaft of the second reducer 13; and third bevel gears 16 fixedly mounted on the transmission rod 15 and the shaft of the crushing roller 3 and meshing with each other, for driving the crushing roller 3 to rotate.

[0025] In this embodiment, the mounting box 9 provides a stable installation environment for the motor 10 and first reducer 11, facilitating centralized management and maintenance while ensuring the stability of the drive mechanism. The motor 10 is the power source, and its output power and speed characteristics determine the device's power and operating rhythm. Proper selection ensures the crushing force of the crushing roller 3 and the material lifting efficiency of the screw 6. The first reducer 11 works in conjunction with the motor 10, converting the speed via the first bevel gears 12 to meet the torque requirements of the screw 6, preventing material conveying errors caused by excessive speed and ensuring smoother and more efficient lifting. The first bevel gears 12 implement motor power diversion and inter-shaft transmission, resulting in a compact and efficient structure and ensuring a stable power transmission link. The second reducer 13, mounted on the top of the crushing box 2, receives power from the screw 6 and distributes it to the crushing roller 3 through transmission with the transmission rod 15 and associated bevel gears, achieving optimal power distribution and precise speed regulation, improving the device's adaptability to operating conditions. The second bevel gears 14 facilitate power transmission and diversion between the screw 6 and the second reducer 13, ensuring smooth power transfer and enhancing system synergy. The transmission rod 15 connects the output shaft of the second reducer 13 with the shaft of the crushing roller 3, ensuring stable power transmission. Its design adapts to the structural requirements of the crushing box 2 and reduces downtime. The third bevel gear 16 transfers power from the transmission rod 15 to the crushing roller 3, adjusting the speed and torque based on the gear ratio to adapt to different straw conditions, improving crushing effectiveness and efficiency, and extending the life of the crushing roller 3. The precise coordination of the various components of the drive mechanism ensures efficient and stable driving of the screw 6 and crushing roller 3. The motor 10 provides energy, and through the coordinated efforts of multiple components, precise power distribution ensures the normal operation of the device.

[0026] In a further preferred embodiment of the present invention, the vibration mechanism includes: a slide rod 17 fixedly installed in the crushing box 2, a sliding sleeve provided with an assembly block 18 on the slide rod 17, and the assembly block 18 is fixedly connected to the sieve plate 8; a spring 19 and a damping sleeve 20 provided on the slide rod 17 for buffering; and a vibrator 21 fixedly installed at the bottom of the sieve plate 8.

[0027] In this embodiment, the slide bar 17 is a sliding track for the assembly block 18, which guides the vibration of the sieve plate 8. Its straightness and smoothness affect the vibration effect, and can reduce friction to help the sieve plate vibrate more smoothly. The assembly block 18 connects the slide bar 17 and the sieve plate 8, transmits the vibration force and supports the sieve plate 8. Its connection needs to be stable to ensure that the vibration mechanism is reliable and durable. The spring 19 is wrapped around the slide bar 17 to provide elastic support. When the sieve plate 8 vibrates, the spring is compressed to store energy. When the vibration force weakens, the energy is released to return the sieve plate to form a vibration cycle; the damping sleeve 20 controls the vibration amplitude and speed of the sieve plate. The two work together to make the sieve plate vibrate smoothly and orderly, optimize screening, reduce impact noise and extend the life of the device. The vibrator 21 is installed at the bottom of the sieve plate 8 and is a power source. Its parameters can be adjusted according to the characteristics of the straw and the screening requirements. Reasonable setting can make the sieve plate produce appropriate vibration, ensure the effective separation of straw particles, and is the key to stable vibration and accurate screening of the sieve plate. The various components of the vibration mechanism cooperate to allow the screen plate 8 to vibrate smoothly and efficiently, prevent particles from clogging the holes, improve screening efficiency and accuracy, reduce adverse effects, ensure stable and good operation of the device screening link, and improve the quality and efficiency of straw processing.

[0028] In a further preferred embodiment of the present invention, a feed hopper 22 is fixedly connected to the crushing box 2, and a cover plate 23 that can be opened and closed is hinged on the top of the feed hopper 22 to prevent straw from splashing.

[0029] In this embodiment, the feed hopper 22 serves as the entrance for straw to enter the crushing box 2. Its design shape and size can accommodate straw input of varying shapes and quantities. Its fixed connection to the crushing box 2 ensures that straw can smoothly enter the crushing work area inside the crushing box 2 from the outside, making the material feeding process more orderly and efficient. The cover 23 is hinged to the top of the feed hopper 22, and its openable and closable design has multiple beneficial effects. When the device is in operation, the cover 23 is closed after the feeding is combined, effectively preventing straw from being splashed by the crushing rollers 3 during the crushing process. On the one hand, this prevents straw from flying out of the feed hopper 22, causing pollution to the surrounding environment and waste of material; on the other hand, it also ensures the personal safety of the operator, preventing accidental injury from flying straw. When straw needs to be added, the cover 23 can be easily opened. Its hinged structure makes opening and closing simple and convenient, without affecting normal feeding operations, improving the practicality and safety of the entire device.

[0030] In a further preferred embodiment of the present invention, a discharge pipe 24 is fixedly connected to the crushing box 2 for discharging the crushed and screened straw. A cloth bag 25 is provided at the discharge end of the discharge pipe 24 for collecting the crushed straw to prevent debris from scattering.

[0031] In this embodiment, the discharge pipe 24 serves as the outlet for the crushed and screened straw within the shredder box 2. It is fixedly connected to the shredder box 2, ensuring smooth discharge of the processed straw from the shredder box 2. A cloth bag 25, located at the discharge end of the discharge pipe 24, plays a key role in collecting the crushed straw. As the straw is discharged from the discharge pipe 24, the crushing process generates some fine debris. The cloth bag 25 effectively prevents this debris from dispersing into the surrounding environment. This prevents air pollution caused by the scattered debris, maintaining a clean working environment.

[0032] In a further preferred embodiment of the present invention, the same protective shell 26 is fixedly installed on the crushing box 2 and the lifting barrel 5 to shield and protect the second reducer 13, the second bevel gear 14, the transmission rod 15 and the third bevel gear 16.

[0033] In this embodiment, the protective shell 26 shields and protects the second reducer 13, the second bevel gear 114, the transmission rod 15 and the third bevel gear 16 to prevent people from being accidentally touched and injured, which is beneficial to safety.

[0034] In a further preferred embodiment of the present invention, a guide plate 27 is fixedly installed on the inner wall of the crushing box 2 for guiding the straw discharged from the return port into the crushing chamber, and a non-slip foot pad is fixedly installed on the bottom of the base plate 1.

[0035] In this embodiment, the guide plate 27 is fixedly mounted on the inner wall of the pulverizing box 2. Its main function is to accurately guide the straw discharged from the return port, ensuring that the straw, which is returned to the pulverizing box 2 through the lifting tube 5, can smoothly and accurately enter the pulverizing chamber. During the operation of the straw pulverizing device, straw that has undergone initial pulverization but does not reach the required degree of pulverization will be returned to the return port of the pulverizing box 2 through the coordinated operation of the lifting tube 5, the guide tube 7 and other components. At this time, the guide plate 27 plays a key role, providing a specific guide path for this returning straw, allowing the straw to enter the pulverizing chamber in a predetermined direction so that it can be pulverized again by the pulverizing roller 3.

[0036] To sum up, the crushing box 2 provides a closed space for centralized processing of straw, accommodates relevant components to complete crushing and preliminary screening, and reduces pollution; the crushing roller 3 forcefully crushes the straw to change its shape, which has a key impact on the crushing effect and capacity of the device; the sieve plate 8 screens the crushed straw to ensure particle uniformity, separates the straw that needs secondary crushing, and improves the fermentation efficiency of bio-fertilizer; the guide hopper 4 collects the straw that needs secondary crushing and exports it; the lifting barrel 5 cooperates with the guide hopper 4 to receive and realize automatic lifting through the screw rod 6, thereby improving the degree of automation; the screw rod 6 rotates to push the straw back to the crushing box 2, ensuring material circulation, saving manpower and improving efficiency; the guide pipe 7 ensures the smooth return of the secondary crushed straw, making the processing process coherent and efficient.

[0037] It is worth noting that the circuits, electronic components and modules involved in the present invention are all existing technologies and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods.

[0038] In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope to be protected by the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making any creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope to be protected by the present invention.

Claims

1. A straw crushing device, characterized in that: include: A base plate, a crushing box is fixedly installed on the top of the base plate, and a crushing roller is rotatably installed in the crushing box for crushing the straw; A guide hopper is fixedly installed in the crushing box, and a discharge end of the guide hopper extends out of the crushing box, and is used to guide the straw that needs to be crushed for the second time; A lifting cylinder is fixedly connected to the discharge end of the guide hopper, the discharge end of the lifting cylinder is connected to the return port of the crushing box through a guide pipe, and a screw rod is rotatably installed in the lifting cylinder for lifting the straw that needs secondary crushing; A sieve plate provided in the crushing box, for screening the crushed straw, one end of the sieve plate extending into the guide hopper; A driving mechanism provided on the pulverizing box and the base plate, for driving the spiral rod and the pulverizing roller to rotate; The vibration mechanism provided on the crushing box and the screen plate is used to control the undulating vibration of the screen plate.

2. The straw crushing device according to claim 1, characterized in that: The driving mechanism comprises: An installation box fixedly mounted on the base plate, wherein a motor and a first reducer are arranged in the installation box, wherein the output shaft of the motor and the output shaft of the first reducer are driven by first bevel gears that are fixedly mounted and mesh with each other, and the output shaft of the first reducer is fixedly connected to the shaft of the screw rod through a coupling; A second reducer is fixedly mounted on the top of the crushing box, and second bevel teeth are fixedly mounted on the input shaft of the second reducer and the screw rod and the shaft, and the two second bevel teeth are meshed with each other for transmission; A transmission rod fixedly mounted on the output shaft of the second reducer; The third bevel teeth are respectively fixedly mounted on the transmission rod and the grinding roller shaft and mesh with each other, and are used for driving the grinding roller to rotate.

3. The straw crushing device according to claim 1, characterized in that: The vibration mechanism comprises: A slide rod fixedly mounted in the crushing box, wherein a mounting block is slidably sleeved on the slide rod, and the mounting block is fixedly connected to the sieve plate; A spring and a damping sleeve sleeved on the slide rod for buffering; A vibrating machine is fixedly mounted on the bottom of the screen plate.

4. The straw crushing device according to claim 1, characterized in that: The crushing box is fixedly connected to a feed hopper, and the top of the feed hopper is hinged with an openable and closable cover plate for preventing straw from splashing.

5. The straw crushing device according to claim 1, characterized in that: The crushing box is fixedly connected with a discharge pipe for discharging the crushed and screened straw. The discharge end of the discharge pipe is provided with a cloth bag for collecting the crushed straw to prevent debris from scattering.

6. The straw crushing device according to claim 2, characterized in that: The same protective shell is fixedly mounted on the crushing box and the lifting barrel, and is used to shield and protect the second reducer, the second bevel gear, the transmission rod and the third bevel gear.

7. The straw crushing device according to claim 1, characterized in that: A material guide plate is fixedly mounted on the inner wall of the crushing box for guiding the straw discharged from the return port into the crushing chamber, and a non-slip foot pad is fixedly mounted on the bottom of the base plate.

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