Straw returning, burying and fertilizer covering device

Abstract

The utility model belongs to the technical field of straw returning machines, and particularly discloses a straw returning, turning, burying and fertilizer covering device which comprises a shell, a turning device and a fertilizer covering device. A crushing roller is rotationally mounted on the side wall of the shell and penetrates through the side wall of the shell; cutters are assembled on the side walls, in the crushing cavity, of the crushing rollers; a feeding hole and a discharging hole are formed in the shell; the compression roller is mounted on the outer wall of the shell through a rocker arm, and the rotating end of the rocker arm is rotationally connected with the shell; the pressing roller is rotationally connected with the swinging end of the rocker arm and corresponds to the discharging opening; the compression roller comprises n counterweight rings; the push rod is rotationally mounted on the shell; the moving end of the push rod is slidably connected with the middle of the rocker. The straw compacting machine has the advantages that the position and pressure of the compression roller can be adjusted through the rocker arm and the push rod, different soil and operation requirements are met, straw is effectively compacted, and soil flatness and operation quality are improved. The number of counterweight rings of the compression roller is adjustable, adjustment is facilitated according to the working environment and the straw thickness, and the applicability of the machine is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of straw returning machines, in particular to a straw returning to the field, burying and covering fertilizer device. Background Art

[0002] A straw returner is a mechanical device used in agricultural production to crush the harvested plant straw and mix it into the soil to increase soil organic matter and improve soil structure. This device usually includes a crushing roller and a pressing roller to crush the straw and compact it to mix it with the soil. In actual use scenarios, this machine is mainly used in farmland with different soil types to process a variety of straw types to promote the rapid decomposition of straw and increase soil fertility.

[0003] However, existing straw returners face some technical problems in actual operation. First, although the weight of the pressure roller is critical to ensure good mixing and compaction of straw and soil, its weight and the height difference between it and the crushing chamber where the crushing roller is located are locally adjustable, which results in insufficient flexibility in pressure regulation when dealing with different soil types and straw mixed environments. In addition, during the process of returning to the field and covering, the thickness of the soil pressed cannot be adjusted instantly, which limits the adaptability of the machine under different operating conditions, which may affect the effective covering of straw and the soil improvement effect. These limitations have caused many problems in actual returning to the field operations.

[0004] Therefore, a device for returning straw to fields and burying and covering fertilizer is proposed to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide a device for returning straw to fields and burying and covering fertilizer, so as to solve or improve at least one of the above technical problems.

[0006] In view of this, the first aspect of the utility model is to provide a device for returning straw to fields and burying it as fertilizer.

[0007] The first aspect of the utility model provides a device for returning straw to the field and burying it for fertilizer, comprising: a shell body, which has a crushing chamber, and the shell body is installed on an agricultural vehicle; a crushing roller is rotatably installed on the side wall of the shell body, and the crushing roller penetrates the side wall of the shell body and extends to the inside of the crushing chamber; the side wall of the crushing roller located in the crushing chamber is equipped with a tool; a feed port and a discharge port are formed on the shell body, and the feed port and the discharge port are respectively connected to the crushing chamber; a pressure roller is installed on the outer wall of the shell body through a rocker arm, and the rotating end of the rocker arm is rotatably connected to the shell body; the pressure roller is rotatably connected to the swinging end of the rocker arm, and the pressure roller corresponds to the discharge port; the pressure roller includes n counterweight rings, and n is an integer greater than zero; a push rod, which is rotatably installed on the shell body; the moving end of the push rod is slidably connected to the middle part of the rocker arm to drive the swinging end to move circumferentially around the rotating end.

[0008] In any of the above technical solutions, a sliding hole is opened in the middle of the side wall of the rocker arm, and the movable end of the push rod is rotatably connected to a sliding block, and the inner wall of the sliding hole is slidably connected to the sliding block.

[0009] In any of the above technical solutions, the pressure roller includes: a rotating shaft, which is rotatably connected to the side wall of the swing end; the inner walls of all the counterweight rings are slidably connected to the side walls of the rotating shaft; a pressure tube, which is sleeved on the outer wall of the counterweight ring; and the two ports of the pressure tube are fixedly assembled with the rotating shaft through an annular sealing plate.

[0010] In any of the above technical solutions, the rotating shaft is formed with convex ribs along the axial direction, and the inner wall of the counterweight ring is provided with a sliding groove matching with the convex ribs, so that the counterweight ring can move along the axial direction of the rotating shaft.

[0011] In any of the above technical solutions, the shaft is provided with a first assembly hole in the radial direction, and the counterweight ring is provided with a second assembly hole in the radial direction of the shaft; the second assembly hole corresponds to the first assembly hole and is fixed and assembled by bolts.

[0012] In any of the above technical solutions, a plurality of cutting blades are installed on the shell along the circumference of the crushing roller; the cutting blades are located inside the crushing chamber, and cutting gaps for the tool to pass through are formed between the connected cutting blades.

[0013] In any of the above technical solutions, a driving wheel is fixedly mounted on the end of the crushing roller, and the driving wheel is located at an end of the shell away from the push rod.

[0014] In any of the above technical solutions, a tensioning wheel is rotatably mounted on a side wall of one end of the shell corresponding to the driving wheel; a transmission belt is jointly sleeved on the tensioning wheel and the driving wheel.

[0015] In any of the above technical solutions, along the traveling direction of the agricultural vehicle, the pressing roller is located behind the crushing roller.

[0016] In any of the above technical solutions, the rotating rod on the feed port is equipped with a plurality of paddles, and the paddles are arranged in sequence along the axial direction of the crushing roller.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] By installing a pressure roller on the outer wall of the housing through a rocker arm and adjusting the position of the rocker arm using the structure of a push rod, the present invention allows the position of the pressure roller and the pressure applied to be flexibly adjusted according to different soil conditions and operation requirements. This design enables the pressure roller to compact the processed straw more effectively, thereby improving the flatness of the soil and the completion quality of the operation.

[0019] The roller includes an adjustable number of weight rings, which allows the operator to add or remove weights as needed to adapt to different working environments and straw thicknesses. This adjustment capability improves the applicability and effectiveness of the machine in different situations.

[0020] Additional aspects and advantages of the embodiments of the present invention will become apparent in the following description or will be understood through practice of the embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 This is a schematic diagram of the crushing roller and its connection structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the push rod and its connection structure of the utility model;

[0025] Figure 4 This is a schematic diagram of the rotating shaft and its connection structure of the utility model;

[0026] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0027] in, Figure 1-5 The corresponding relationship between the reference numerals and the component names is as follows:

[0028] 1 shell, 101 crushing chamber, 102 feed port, 103 discharge port, 104 cutting disc, 2 crushing roller, 201 cutter, 202 driving wheel, 3 pressure roller, 301 rotating shaft, 3011 convex rib, 3012 first assembly hole, 302 pressure tube, 303 counterweight ring, 3031 slide groove, 3032 second assembly hole, 4 rocker arm, 401 slide hole, 402 slider, 5 push rod, 6 tensioning wheel, 7 paddle. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0031] See also Figure 1-5 , a straw returning to field, burying and mulching device for fertilizer in some embodiments of the utility model is described below.

[0032] The embodiment of the first aspect of the utility model provides a straw returning to the field, burying and covering fertilizer device. In some embodiments of the utility model, such as Figure 1-5 As shown, the device comprises:

[0033] The shell 1 has a crushing chamber 101, and the shell 1 can be installed on the agricultural vehicle in a liftable manner; a crushing roller 2 is rotatably installed on the side wall of the shell 1, and the crushing roller 2 penetrates the side wall of the shell 1 and extends to the inside of the crushing chamber 101; a cutter 201 is installed on the side wall of the crushing roller 2 located in the crushing chamber 101; a feed port 102 and a discharge port 103 are formed on the shell 1, and the feed port 102 and the discharge port 103 are respectively connected to the crushing chamber 101.

[0034] The pressure roller 3 is installed on the outer wall of the shell 1 through the rocker arm 4, and the rotating end of the rocker arm 4 is rotationally connected to the shell 1; the pressure roller 3 is rotationally connected to the swinging end of the rocker arm 4, and the pressure roller 3 corresponds to the discharge port 103; the pressure roller 3 includes n counterweight rings 303, and n is an integer greater than zero.

[0035] The push rod 5 is rotatably mounted on the housing 1. The push rod 5 is specifically an electric push rod 5. The moving end of the push rod 5 is slidably connected to the middle of the rocker arm 4 to drive the swing end to move circumferentially around the rotating end. The push rod 5 is connected to the power supply of the agricultural vehicle.

[0036] The utility model provides a straw returning to the field, burying and covering fertilizer device, wherein the shell 1 is the main structure, which is responsible for protecting the internal components of the machine and supporting the crushing roller 2. The shell 1 is designed as a lifting structure, so that it can be installed on an agricultural vehicle (such as a tractor), and it is convenient to adjust the distance from the ground to adapt to different working heights and conditions; the crushing chamber 101 is located inside the shell 1, which is the main working area for straw crushing. The design of the crushing chamber 101 ensures that the straw can be effectively crushed after entering; the crushing roller 2 is a rotating drum, which extends into the crushing chamber 101 through the side wall of the shell 1. The main function of the crushing roller 2 is to crush and stir the straw through the mechanical force on its surface; the cutter 201 is installed on the crushing roller 2, usually a plurality of rotating blades, which are used to cut and tear the straw passing through the crushing roller 2. These cutters 201 efficiently cut the straw when the crushing roller 2 rotates, accelerating the crushing process; the feed port 102 is located at one end of the shell 1, and is used to feed the straw into the crushing chamber 101. The design of the feed port 102 ensures continuous and uniform supply of straw, which facilitates the efficient operation of the crushing roller 2 and the cutter 201; the discharge port 103 is located at the other end of the housing 1 and is used to discharge the crushed straw. The position and design of the discharge port 103 ensure that the crushed material can be discharged smoothly to avoid blockage and material accumulation.

[0037] When the straw return machine is started, the straw is fed into the crushing chamber 101 through the feed port 102 and is quickly crushed by the high-speed rotation of the crushing roller 2 and the action of the cutter 201. The crushed straw is further stirred and cut in the crushing chamber 101 to ensure thorough crushing; the crushed straw is discharged through the discharge port 103 and directly returned to the soil, increasing the organic matter content of the soil, which helps to improve the soil structure and enhance the fertility.

[0038] The pressure roller 3 is fixed to the outer wall of the housing 1 through one or more rocker arms 4. One end (rotating end) of the rocker arm 4 is rotatably connected to the housing 1, allowing the rocker arm 4 to swing up and down within a certain angle, thereby adjusting the pressure and contact height between the pressure roller 3 and the ground; the other end (swinging end) of the pressure roller 3 is rotatably connected to the rocker arm 4, and this design enables the pressure roller 3 to freely adjust its position according to the terrain and working needs; the pressure roller 3 includes a number of weight rings 303 (n, n is an integer greater than zero), and these weight rings 303 can be increased or decreased as needed to adjust the total weight of the pressure roller 3. The adjustment of the weight ring 303 allows the machine to adapt to different working conditions and soil types and provide appropriate compaction force.

[0039] When the straw return machine is working, the crushed straw is discharged from the discharge port 103. At this time, the pressing roller 3 is located at the position corresponding to the discharge port 103, and directly acts on the discharged straw and soil; as the machine moves forward, the pressing roller 3 applies pressure through its own weight and the additional counterweight ring 303 to compact the straw and soil. This compaction effect helps to better combine the straw with the soil, reduce air pockets, and promote the decomposition of the straw and the nutrient cycle of the soil; the height and angle of the pressing roller 3 are adjusted by the rocker arm 4 to adapt to different soil conditions and operating requirements. This flexible adjustment mechanism ensures that the pressing roller 3 can play the best effect in different soil types and operating environments.

[0040] The push rod 5 is of electric type and is rotatably mounted on the housing 1. The design of the electric push rod 5 allows it to achieve linear push-pull motion through electric drive. Such a push rod 5 generally has high force output and control accuracy; the moving end of the push rod 5 is connected to the middle of the rocker arm 4 through a sliding joint. This sliding connection allows the push rod 5 to smoothly adjust its length when driving the rocker arm 4 to adapt to the movement of the rocker arm 4.

[0041] When the electric push rod 5 receives the control signal, it will extend or retract according to the signal's instructions. This telescopic action directly acts on the middle of the rocker arm 4 through its moving end, driving the rocker arm 4 to move circumferentially around its rotating end (i.e., the rotating shaft connecting the rocker arm 4 and the housing 1); by controlling the telescopic movement of the push rod 5, the angle and position of the rocker arm 4 can be accurately adjusted, thereby adjusting the height of the pressure roller 3 and the contact pressure with the ground. This adjustment is very important for adapting to different working environments and soil conditions, and can ensure that the pressure roller 3 can effectively compact the soil and straw; the electric push rod 5 is connected to the power supply of the agricultural vehicle, which can ensure that the push rod 5 has a stable power supply to perform its function. This design makes mechanical operation more convenient and efficient, while reducing the need for manual operation.

[0042] In summary, in the background technology, the adjustment of the weight and height difference of the pressure roller 3 is not flexible enough to adapt to different soil types and straw environments. The present invention introduces an adjustable counterweight ring 303 and an electric push rod 5, so that the weight and height of the pressure roller 3 can be adjusted according to different operating conditions. This allows the operator to flexibly adjust the pressure of the pressure roller 3 according to the soil type and the amount of straw; through the design of the electric push rod 5 and the counterweight ring 303, the present invention enables the field return machine to adapt to a wider range of soil types and operating environments, and improves the scope of use and flexibility of the machine; accurately adjusting the pressure and position of the pressure roller 3 can more effectively compact the mixture of straw and soil, promote the rapid decomposition of straw and the improvement of soil structure, thereby increasing the organic matter and nutrients in the soil.

[0043] Specifically, the rocker arm 4 is a plate structure, and the plate is a long strip structure, one end of which functions as a rotating end, and the other end of which functions as a swinging end, so that the other end of the rocker arm 4 can move circumferentially around one end.

[0044] In any of the above embodiments, a sliding hole 401 is opened in the middle of the side wall of the rocker arm 4, and the movable end of the push rod 5 is rotatably connected to the slider 402, and the inner wall of the sliding hole 401 is slidably connected to the slider 402.

[0045] In this embodiment, a sliding hole 401 is provided in the middle of the side wall of the rocker arm 4, which is an elongated or circular opening, usually perpendicular to the length direction of the rocker arm 4. The design of the sliding hole 401 allows the components installed inside to move within a certain range without affecting the stability of the overall structure; the moving end of the push rod 5 is rotatably connected to a slider 402, which is a component that matches the shape of the inner wall of the sliding hole 401 and can slide smoothly along a set track inside the sliding hole 401. The slider 402 is usually designed to be a strong and durable material to withstand the push and pull force of the push rod 5 and the mechanical load of the rocker arm 4.

[0046] When the electric push rod 5 is working, its moving end slides in the sliding hole 401 of the rocker arm 4 through the slider 402. This sliding is achieved by the telescopic action of the push rod 5, and the action of the push rod 5 directly affects the position of the slider 402; the movement of the slider 402 in the sliding hole 401 drives the rocker arm 4 to move circumferentially around its rotating end (the connection point installed on the housing 1). This movement allows the position of the rocker arm 4 and therefore the pressure roller 3 to be accurately adjusted to adapt to different working conditions and soil types; due to the interaction between the slider 402 and the sliding hole 401, the entire system can achieve smooth and continuous adjustment under the drive of the push rod 5. This mechanism reduces the vibration and impact caused by the position adjustment of the rocker arm 4, and improves the smoothness of operation and the durability of the equipment.

[0047] In any of the above embodiments, the pressing roller 3 comprises:

[0048] The rotating shaft 301 is rotatably connected to the side wall of the swing end; the inner walls of all the counterweight rings 303 are slidably connected to the side wall of the rotating shaft 301.

[0049] The pressure tube 302 is sleeved on the outer wall of the counterweight ring 303 ; two ports of the pressure tube 302 are fixedly assembled with the rotating shaft 301 through an annular sealing plate.

[0050] In this embodiment, the rotating shaft 301 is the central support of the pressure roller 3, which is rotatably connected to the side wall of the swing end of the rocker arm 4, allowing the pressure roller 3 to rotate or tilt under the drive of the rocker arm 4. This connection method supports the dynamic adjustment of the pressure roller 3, so that it can change its position and angle according to the needs of the operation; the counterweight ring 303 is sleeved on the outside of the rotating shaft 301, and the inner walls of all the counterweight rings 303 are slidably connected to the side walls of the rotating shaft 301. This sliding connection allows the counterweight ring 303 to move or increase or decrease on the rotating shaft 301, thereby adjusting the total weight of the pressure roller 3. The operator can add or reduce the counterweight ring 303 according to the hardness of the soil and the needs of the operation to achieve an ideal compaction effect; the pressure tube 302 is sleeved on the outer walls of all the counterweight rings 303, which plays the role of uniformly wrapping and fixing the counterweight rings 303. Both ends of the pressing tube 302 are fixedly assembled with the rotating shaft 301 through an annular sealing plate. This assembly method ensures the stability between the pressing tube 302 and the rotating shaft 301 and prevents the pressing tube 302 from shifting or falling off during operation.

[0051] When the straw returner is in operation, the pressing roller 3 compacts the soil and straw through its weight and structural design. The rotation of the shaft 301 drives the pressing tube 302 and the counterweight ring 303 to rotate together, which not only levels the soil surface, but also ensures that the straw is evenly pressed into the soil; by adding or reducing the counterweight ring 303, the operator can adjust the total weight of the pressing roller 3 to adapt to different soil conditions and operating requirements. The heavier pressing roller 3 is suitable for scenarios that require stronger compaction force, such as wet heavy soil or thicker straw layers, while the lighter setting is suitable for dry or more fragile soil types; the use of annular sealing plates enhances the connection stability of the pressing tube 302 and the shaft 301, ensuring that the pressing tube 302 will not loosen or shift during the operation of the machine, thereby ensuring the continuity of the operation and the safety of the equipment.

[0052] In any of the above embodiments, the rotating shaft 301 is formed with a rib 3011 along the axial direction, and the inner wall of the counterweight ring 303 is provided with a sliding groove 3031 that matches the rib 3011 , so that the counterweight ring 303 can move along the axial direction of the rotating shaft 301 .

[0053] In this embodiment, the rotating shaft 301 is formed with ribs 3011 along the axial direction, which are protruding axial strips, usually evenly distributed along the length of the rotating shaft 301. The ribs 3011 are designed to cooperate with the slide grooves 3031 of the counterweight ring 303 to provide a guiding and positioning mechanism; the inner wall of the counterweight ring 303 is provided with slide grooves 3031 that cooperate with the ribs 3011. These slide grooves 3031 precisely match the shape and size of the ribs 3011, allowing the counterweight ring 303 to slide axially on the rotating shaft 301, while preventing the counterweight ring 303 from twisting or dislocating during rotation.

[0054] The cooperation of the rib 3011 and the slide 3031 enables the weight ring 303 to move axially along the rotating shaft 301. This design allows the operator to adjust the position of the weight ring 303 according to the needs of the operation, and change the weight distribution and the point of action of the pressure roller 3. For example, more weight can be concentrated at the center or both ends of the pressure roller 3 to adapt to different soil conditions and compaction requirements; the cooperation of the rib 3011 and the slide 3031 not only allows the weight ring 303 to move axially, but also ensures the stability of the weight ring 303 when the rotating shaft 301 rotates. This prevents any lateral movement or separation of the weight ring 303 during operation, ensuring the continuity of the operation and the safety of the machine; by simply sliding the weight ring 303 to adjust its position on the rotating shaft 301, the operator can quickly respond to different operating conditions and achieve instant adjustment of the weight of the pressure roller 3. This design greatly enhances the adaptability of the machine, enabling it to remain efficient and effective in a changing agricultural environment.

[0055] In any of the above embodiments, the shaft 301 is radially provided with a first assembly hole 3012 , and the weight ring 303 is radially provided with a second assembly hole 3032 ; the second assembly hole 3032 corresponds to the first assembly hole 3012 and is assembled and fixed by bolts.

[0056] In this embodiment, the rotating shaft 301 is provided with first assembly holes 3012 in the radial direction, and these holes are pre-designed on the rotating shaft 301 for installing fixed elements. These assembly holes are usually evenly distributed around the rotating shaft 301 to ensure balanced and stable installation; the counterweight ring 303 is provided with second assembly holes 3032 in the radial direction of the rotating shaft 301, and these holes correspond to the first assembly holes 3012 on the rotating shaft 301. The position and size of the second assembly hole 3032 of the counterweight ring 303 are designed to be perfectly aligned with the first assembly hole 3012 on the rotating shaft 301; the first assembly hole 3012 and the second assembly hole 3032 are fixedly assembled by bolts. Bolts are used as connecting parts because they provide reliable mechanical strength and a simple installation or disassembly method, which is convenient for maintenance and adjustment.

[0057] The weight ring 303 is fixed to a specific position on the rotating shaft 301 by passing a bolt through the second assembly hole 3032 of the weight ring 303 and screwing it into the first assembly hole 3012 of the rotating shaft 301. This fixing method not only ensures the stability of the weight ring 303 on the rotating shaft 301, but also allows the position of the weight ring 303 to be adjusted or the number of weight rings 303 to be increased or decreased by changing the use of different bolt holes; this design of fixing by bolts allows the operator to flexibly adjust the weight and balance of the pressure roller 3 according to different operating conditions. At the same time, the bolt connection provides sufficient mechanical strength to withstand various loads in mechanical operation, increasing the operational safety of the equipment; when maintenance or reconfiguration of the weight of the pressure roller 3 is required, the bolts can be simply removed or replaced, and the weight ring 303 can be adjusted or replaced. This design makes maintenance and adjustment work faster and more convenient.

[0058] In any of the above embodiments, a plurality of cutting blades 104 are installed on the shell 1 along the circumference of the crushing roller 2; the cutting blades 104 are located inside the crushing chamber 101, and cutting gaps for the cutter 201 to pass through are formed between the connected cutting blades 104.

[0059] In this embodiment, the cutting blades 104 are evenly installed inside the housing 1 along the circumference of the crushing roller 2. These cutting blades 104 are fixed on the housing 1 and arranged around the crushing roller 2 to ensure that they can work in coordination with the cutter 201 on the crushing roller 2; cutting gaps are formed between the cutting blades 104 for the cutter 201 to pass through. These gaps are precisely controlled to be large enough to allow the cutter 201 to pass through without obstruction, and small enough to ensure cutting efficiency and fine shredding of straw.

[0060] When the crushing roller 2 rotates, the cutter 201 thereon will cooperate with the cutting gap between the cutting blades 104. During the rotation process, the cutter 201 on the crushing roller 2 passes through the cutting gap and interacts with the fixed cutting blade 104, thereby achieving effective cutting and crushing of the straw entering the crushing chamber 101; the design of the cutting blade 104 ensures that the cutter 201 on the crushing roller 2 can contact the straw to the maximum extent when passing through the cutting gap, thereby improving the cutting efficiency and crushing effect. This design allows the straw to be cut evenly and thoroughly, which is beneficial to the subsequent soil mixing and decomposition process; the precisely controlled cutting gap also helps to reduce blockage in the crushing chamber 101. When the gap between the cutter 201 and the cutting blade 104 is appropriate, straw is not easy to accumulate inside the machine, thereby reducing the need for shutdown for cleaning and improving the continuity and efficiency of the overall operation.

[0061] In any of the above embodiments, a driving wheel 202 is fixedly mounted on the end of the crushing roller 2 , and the driving wheel 202 is located at an end of the housing 1 away from the push rod 5 .

[0062] In this embodiment, the driving wheel 202 is fixedly mounted on the end of the crushing roller 2, usually at the end of the housing 1 away from the push rod 5. This position selection helps to maintain the balance and stability of the machine, and is also convenient for connection with the main power source of the machine (such as the power output of a tractor or other agricultural vehicle); the main function of the driving wheel 202 is to receive power from an external power source and effectively transmit this power to the crushing roller 2. The driving wheel 202 receives power through a transmission system (such as a belt, chain or gear, etc.) connected to the power source.

[0063] When the straw returner is started, an external power source (usually power provided by an agricultural vehicle) drives the driving wheel 202 to rotate through the transmission system. The rotation of the driving wheel 202 directly drives the crushing roller 2 to rotate through its fixed connection with the crushing roller 2; the rotation of the crushing roller 2 is a key action in processing straw. As the crushing roller 2 rotates, the cutter 201 thereon and the cutting blade 104 on the shell 1 work together to efficiently cut and crush the straw passing through the crushing chamber 101; by installing the driving wheel 202 at one end of the crushing roller 2 and at a farther position from the shell 1, the stability and efficiency of the entire crushing system can be improved. Such a configuration reduces energy loss during power transmission and ensures that the crushing roller 2 can operate at optimal speed and strength, thereby improving processing efficiency.

[0064] In any of the above embodiments, a tensioning wheel 6 is rotatably mounted on the side wall of one end of the housing 1 corresponding to the driving wheel 202; a transmission belt is sleeved on the tensioning wheel 6 and the driving wheel 202, and power is input through the power output wheel on the agricultural vehicle.

[0065] In this embodiment, the tension wheel 6 is rotatably mounted on the side wall of one end of the housing 1 corresponding to the driving wheel 202. Its main function is to adjust and maintain the tension of the transmission belt, ensure that the transmission belt remains in an appropriate tight state during operation, and prevent slipping or falling off; the transmission belt is sleeved on the tension wheel 6 and the driving wheel 202 to form a closed transmission loop. The function of the belt is to transmit the power received from the power output wheel of the agricultural vehicle to the driving wheel 202, thereby driving the crushing roller 2 to operate; the power output wheel on the agricultural vehicle is connected to the tension wheel 6 and the driving wheel 202 through the transmission belt, thereby providing the necessary power input.

[0066] When the straw returner is started, the power output wheel of the agricultural vehicle starts to rotate, and the power is transmitted to the drive wheel 202 through the transmission belt. As a medium for power transmission, the transmission belt can effectively transmit mechanical power from the output wheel to the drive wheel 202 due to its material and design; the existence of the tension wheel 6 is to ensure that the transmission belt maintains appropriate tension during operation. This is achieved by adjusting the position of the tension wheel 6. The tension wheel 6 can be moved to increase or decrease the tension on the belt to ensure that the belt does not slip due to relaxation, nor does it wear or break quickly due to excessive tension; by optimizing the tension of the transmission belt and maintaining the stable operation of the transmission system, the entire system can operate with higher efficiency. This design reduces power loss and increases the operating speed and stability of the crushing roller 2, thereby improving the overall performance of the machine and the efficiency of straw processing.

[0067] In any of the above embodiments, along the traveling direction of the agricultural vehicle, the pressing roller 3 is located behind the crushing roller 2 .

[0068] In this embodiment, the pressing roller 3 is located behind the crushing roller 2, which means that after the straw is cut and crushed by the crushing roller 2, the mixture of straw and soil will be further compacted and leveled by the pressing roller 3; this arrangement optimizes the operation process and ensures the continuity and efficiency of the processing process. The straw is first processed by the crushing roller 2 and then immediately compacted by the pressing roller 3, which can effectively promote the mixing of straw and soil and the improvement of soil structure.

[0069] Crushing roller 2 is responsible for cutting and crushing the straw. Through the rotation of crushing roller 2, the cutter 201 on it cuts the straw into smaller pieces, which are mixed with the soil to prepare for the next compaction operation; pressing roller 3 follows crushing roller 2 to compact the crushed straw and soil. Pressing roller 3, through its weight and possible additional counterweights (such as the counterweight ring 303 discussed above), evenly compacts the soil and straw mixture, reduces air gaps, accelerates the decomposition process of the straw, and improves the physical properties of the soil; by ensuring that the crushed straw can be compacted in time, this configuration helps lock moisture and nutrients in the soil, while preventing the crushed straw from being blown away or lost by the wind, thereby enhancing the water retention and fertility of the soil.

[0070] In any of the above embodiments, a plurality of paddles 7 are installed on the rotating rod on the feed port, and the paddles 7 are arranged in sequence along the axial direction of the crushing roller 2 .

[0071] In this embodiment, the paddles 7 are mounted on the rotating rod above the feed port 102. The paddles 7 are arranged in sequence along the axial direction of the crushing roller 2, that is, the paddles 7 are evenly distributed over the entire length of the rotating rod at a certain interval; the main function of the paddles 7 is to preliminarily disperse and guide the straw before it enters the crushing chamber 101, helping the straw to be evenly distributed over the width of the crushing roller 2, thereby improving the crushing efficiency.

[0072] When the straw is fed in through the feed port 102, the paddle 7 on the rotating rod starts to work. As the rotating rod rotates, the paddle 7 hits and pushes the straw so that it is properly dispersed before entering the crushing chamber 101. This process ensures that the straw does not gather in a certain part of the crushing roller 2, but is evenly distributed in the entire contactable area of ​​the crushing roller 2; through the action of the paddle 7, the straw is spread out more evenly, which helps the cutter 201 on the crushing roller 2 to contact and process each part of the straw more effectively. This not only improves the crushing efficiency, but also helps to reduce possible mechanical blockages and uneven straw processing problems; the paddle 7 helps to break up the accumulation of straw through its physical action, so that the straw is partially spread out when entering the crushing chamber 101, reducing the workload of the crushing roller 2. This allows the crushing roller 2 to focus more on cutting and crushing the straw, rather than dealing with the dispersion of large clumps of straw, thereby improving the overall operating efficiency.

[0073] Working principle: the straw enters the machine through the feed port 102, where the multiple paddles 7 mounted on the rotating rod start to work. The paddles 7 are arranged in sequence along the axial direction of the crushing roller 2. As the rotating rod rotates, the paddles 7 strike and push the incoming straw to achieve preliminary dispersion and guidance of the straw. This process ensures that the straw is evenly distributed over the entire length of the crushing roller 2, preparing for the subsequent crushing process.

[0074] A driving wheel 202 is fixedly mounted on the end of the crushing roller 2, and power is transmitted through the power output wheel and the transmission belt on the agricultural vehicle to drive the crushing roller 2 to rotate. The crushing roller 2 is equipped with a plurality of cutters 201, which can efficiently cut and crush the straw in combination with the cutting blades 104 installed on the housing 1. The cutting gap formed between the cutting blades 104 allows the cutters 201 to pass smoothly, thereby achieving thorough cutting of the straw.

[0075] The crushed straw is discharged from the crushing chamber 101 through the discharge port 103, and then passes through the pressing roller 3 located behind the crushing roller 2. The pressing roller 3 compacts the processed straw and soil by its own weight and the counterweight ring 303 that may be added. The weight and compaction depth of the pressing roller 3 can be accurately adjusted by the electric push rod 5 and rocker arm 4 system assembled on the housing 1 to adapt to different soil conditions and working requirements.

[0076] The tension wheel 6 is mounted on the side wall of the housing 1 corresponding to the driving wheel 202, and is connected with the driving wheel 202 together with a transmission belt, which is responsible for maintaining the appropriate tension of the belt. This ensures the efficiency and stability of power transmission from the power output wheel to the driving wheel 202, and ensures the continuous and efficient operation of the crushing roller 2.

[0077] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, 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 do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0078] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A straw returning to the field and burying fertilizer device, characterized in that: include: The shell has a crushing chamber, and the shell is installed on an agricultural vehicle; a crushing roller is rotatably installed on the side wall of the shell, and the crushing roller penetrates the side wall of the shell and extends to the inside of the crushing chamber; a cutter is installed on the side wall of the crushing roller located in the crushing chamber; a feed port and a discharge port are formed on the shell, and the feed port and the discharge port are respectively connected to the crushing chamber; A pressure roller is mounted on the outer wall of the shell through a rocker arm, and the rotating end of the rocker arm is rotatably connected to the shell; the pressure roller is rotatably connected to the swing end of the rocker arm, and the pressure roller corresponds to the discharge port; the pressure roller includes n counterweight rings, and n is an integer greater than zero; A push rod is rotatably mounted on the housing; the moving end of the push rod is slidably connected to the middle part of the rocker arm to drive the swing end to move circumferentially around the rotating end.

2. The straw returning to field and burying fertilizer device according to claim 1 is characterized in that: A sliding hole is provided in the middle of the side wall of the rocker arm, and the movable end of the push rod is rotatably connected with a sliding block, and the inner wall of the sliding hole is slidably connected to the sliding block.

3. The straw returning to field and burying fertilizer device according to claim 1 is characterized in that: The pressure roller comprises: A rotating shaft is rotatably connected to the side wall of the swing end; the inner walls of all the counterweight rings are slidably connected to the side wall of the rotating shaft; A pressure pipe is sleeved on the outer wall of the counterweight ring; two ports of the pressure pipe are fixedly assembled with the rotating shaft through an annular sealing plate.

4. The straw returning to field and burying fertilizer device according to claim 3 is characterized in that: The rotating shaft is formed with convex ribs along the axial direction, and the inner wall of the counterweight ring is provided with a sliding groove matched with the convex ribs, so that the counterweight ring can move along the axial direction of the rotating shaft.

5. The straw returning to field and burying fertilizer device according to claim 3 is characterized in that: The rotating shaft is provided with a first assembly hole in a radial direction, and the counterweight ring is provided with a second assembly hole in a radial direction of the rotating shaft; the second assembly hole corresponds to the first assembly hole and is fixed and assembled by bolts.

6. The straw returning to field and burying fertilizer device according to claim 1 is characterized in that: A plurality of cutting blades are mounted on the shell along the circumference of the crushing roller; the cutting blades are located inside the crushing chamber, and cutting gaps are formed between the connected cutting blades for the tool to pass through.

7. The straw returning to field and burying fertilizer device according to claim 1 is characterized in that: A driving wheel is fixedly mounted on the end of the crushing roller, and the driving wheel is located at an end of the housing away from the push rod.

8. The straw returning to field and burying fertilizer device according to claim 7 is characterized in that: A tensioning wheel is rotatably mounted on a side wall of one end of the shell corresponding to the driving wheel; a transmission belt is sleeved on the tensioning wheel and the driving wheel.

9. The straw returning to field and burying fertilizer device according to claim 1 is characterized in that: Along the traveling direction of the agricultural vehicle, the pressing roller is located behind the crushing roller.

10. The straw returning to field and burying fertilizer device according to claim 1 is characterized in that: The rotating rod on the feed port is equipped with a plurality of paddles, and the paddles are arranged in sequence along the axial direction of the crushing roller.

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