Straw returning and soil crushing combined tillage device

Abstract

The application discloses a kind of straw returning to field synchronous soil breaking combined tillage device, it is related to the technical field of agricultural tillage machinery, including vehicle body, be arranged in the lower end of vehicle body and be used for soil rotary tillage broken soil breaking component and be arranged in the front end of vehicle body and be used for straw shearing pulverization throwing pulverization straw component;Soil breaking component is integrated with the first transmission member of power transmission, depth-limiting adjusting member for controlling rotary tillage depth, control piece for controlling power on-off and soil breaking piece for executing soil breaking, and the second protective shell and the ground rolling piece of pre-falling straw are integrated with the support connecting piece, the second transmission member of output pulverization power;The application realizes reliable power clutch control by axial plug-in control piece, relies on the integrated layout of pre-straw pulverization and lower rotary tillage soil breaking, randomly completes straw falling, shearing pulverization, uniform throwing and rotary tillage burying operation simultaneously, cooperates multi-gear depth-limiting adjusting structure and adjustable adjusting cover plate, and is suitable for various field operation scenes.

Description

Technical Field

[0001] This invention relates to the field of agricultural tillage machinery technology, specifically to a combined tillage device for straw return and soil crushing. Background Technology

[0002] Returning straw to the field is an important conservation tillage method to improve the organic matter of arable land and improve soil structure. When combined with rotary tillage and soil breaking operations, it can simultaneously achieve deep burial and decomposition of straw and soil activation, and is widely used in green agricultural production.

[0003] Under the current production model, straw crushing and returning to the field and rotary tillage are mostly independent processes, requiring separate operations using straw returning machines and rotary tillers. This results in numerous machine trips, low efficiency, and high overall costs. Many integrated combined operation equipment are tractor-tethered, with large overall dimensions and turning radii, making them unsuitable for small-scale operations in hilly areas, small plots, or orchards.

[0004] In the research and application of hand-held small combined operation equipment, existing small equipment mostly adopts a belt-tensioned clutch structure, which relies on the tensioner pulley to squeeze the transmission belt to achieve power switching. During operation, affected by field bumps and vibrations, the belt is prone to slippage and tooth skipping, resulting in power transmission interruption. Moreover, the tensioning arm is prone to fatigue deformation under long-term alternating loads, resulting in insufficient tension and reduced clutch control accuracy and reliability. Some other equipment uses friction plate clutches, which are easily invaded by mud, water and dust during field operations, aggravating component wear, leading to slippage and incomplete disengagement. Frequent start-stop operations can easily generate impact loads that damage transmission components and also pose operational safety hazards. Summary of the Invention

[0005] The purpose of this invention is to provide a straw return and soil crushing combined tillage device to solve the problem of insufficient reliability of the clutch operation of the equipment when straw return and soil crushing are combined in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a straw-returning and soil-crushing combined tillage device, comprising a vehicle body, and further comprising:

[0007] A soil-crushing component, located at the lower end of the vehicle body, is used for rotary tillage and soil crushing. It also includes a first transmission component, located within the vehicle body cavity, for providing driving force. The lower end of the first transmission component is provided with a depth-limiting adjustment component, a control component, and a soil-crushing component. The depth-limiting adjustment component is located on one side of the lower end of the first transmission component and is used to limit the rotary tillage depth of the soil-crushing component by changing the soil penetration depth. The control component is located within the cavity of the first transmission component and is used for manual tensioning or loosening of the power clutch. The soil-crushing component is located at the lower end of the depth-limiting adjustment component and is used to crush the soil while controlling the movement of the vehicle body.

[0008] A straw crushing component, located at the front end of the vehicle body, is used to shear and crush surface straw and spread it back to the field. It also includes a connector, used as a support structure mounted on the vehicle body. The connector is further equipped with a second transmission component, which has roller blades for shearing straw. A second protective shell is fixedly installed at the front end of the connector, with the roller blades disposed inside the second protective shell. An adjusting cover plate is connected to the front end of the second protective shell via a hinge for adjusting the crushing path and spreading direction. A ground-pressing roller is also located at the front end of the second protective shell, used to roll over the ground as the vehicle body moves, pressing the straw down for easier shearing by the roller blades.

[0009] Both the soil crushing component and the straw crushing component are connected to the vehicle body, and the soil crushing operation and the straw crushing and returning operation are completed synchronously as the vehicle body moves.

[0010] Furthermore, the vehicle body includes a body frame, a front end is fixedly mounted on the upper part of the body frame, a handle is hinged to the rear part of the body frame, and a controller is provided on one side of the handle end; the controller is connected to the control terminal of the control component through a control circuit, and is used to output control commands for power clutch to the control component.

[0011] Furthermore, the first transmission component also includes a first pulley disposed in the inner cavity of the vehicle body, the first pulley being coaxially connected to the power output shaft of the vehicle body, a second pulley being disposed on one side of the first pulley and located in the inner cavity of the vehicle body, the second pulley having a insertion hole at its center, and a first transmission belt being tensioned and sleeved on the outer sides of the first pulley and the second pulley; a first protective shell is disposed at the lower end of the vehicle body, the first protective shell being located below the second pulley, for wrapping and protecting the control component.

[0012] Furthermore, the depth limiting adjustment component includes a support arm that is vertically fixedly installed at the lower end of the first protective shell. A fixed support is fixedly provided on the front side of the support arm, and an extension rod is horizontally connected to the rear side of the support arm. A resistance rod is fixedly installed on the extension rod by bolts. The resistance rod has multiple sets of height adjustment holes along its vertical direction. The resistance rod changes its vertical extension length by cooperating with the extension rod through bolts, thereby limiting the rotary tillage depth of the soil breaking component.

[0013] Furthermore, the control component includes a power shaft disposed in the inner cavity of the boom frame, and the upper end of the power shaft is provided with a plug-in section adapted to the center plug-in hole of the second pulley;

[0014] A pressure plate is provided at the upper end of the power shaft and within the inner cavity of the first protective shell. A return torsion spring is also sleeved on the upper end of the power shaft. The upper end of the return torsion spring abuts against the lower end face of the pressure plate, and the lower end abuts against a bearing component. The bearing component is fixedly installed on the inner wall of the support arm frame as a fixed support seat. A pressure rod is also movably installed in the inner cavity of the first protective shell. A rocker arm is fixedly installed on one side of the pressure rod. The rocker arm extends out of the first protective shell. A control cable is hinged to the outer end of the rocker arm. The other end of the control cable is connected to the control end of the handle.

[0015] By applying force to the control cable, the rocker arm and pressure rod swing, pressing down the pressure plate, and cooperating with the return torsion spring to compress, the power shaft moves down, causing the insertion section to separate from the insertion hole, and the power shaft stops rotating, thus performing power disconnection control.

[0016] By not applying force to the control cable, the return torsion spring rebounds and resets, driving the power shaft upward so that the upper end of the power shaft is inserted into the insertion hole in the center of the second pulley. The power shaft rotates synchronously with the second pulley, keeping the power connected.

[0017] Furthermore, the soil crushing component includes a worm coaxially connected to the lower end of the power shaft. A worm wheel is engaged with one side of the worm. A mounting shell is fitted around the worm wheel and the worm. A horizontally arranged movable shaft is coaxially mounted on the worm wheel. Side-bent blades are fixed circumferentially on the shaft bodies at both ends of the movable shaft. A movable wheel is coaxially mounted on the outermost end of the movable shaft for supporting the movement of the entire device along with the vehicle body.

[0018] Furthermore, the connector includes two sets of first connecting arms installed on both sides of the vehicle body. The other ends of the two sets of first connecting arms are respectively fixedly mounted on the second protective shell. A second connecting arm is provided below the first connecting arm. One end of the second connecting arm is fixedly connected to the fixed support, and the other end is also fixedly mounted on the second protective shell. The first connecting arm and the second connecting arm form a triangular support structure to support the straw crushing assembly. The transmission structure of the second transmission component is installed on the connector.

[0019] Furthermore, the transmission structure of the second transmission component includes a drive wheel shaft mounted on the first connecting arm. One end of the drive wheel shaft is equipped with a drive motor, and the other end is equipped with a third pulley. A second transmission belt is provided on the outer side of the third pulley, and a pulley is provided on the other end of the second transmission belt. A cutter roller shaft is coaxially fixed to the pulley, and roller blades are fixed at intervals along the axial direction on the cutter roller shaft for shearing and crushing the surface straw as the cutter roller shaft rotates.

[0020] Furthermore, the second protective shell includes side plates on both sides, and a mounting shell is fixed between the side plates. Fixed blades are staggered on the inner side of the mounting shell corresponding to the gap of the roller blades. The roller blades and fixed blades cooperate to form a shearing pair. The adjusting cover plate is mounted on the mounting shell via a hinge. The adjusting cover plate is equipped with a sliding eye for locking and fixing when the adjusting cover plate is fastened with fasteners, and for adjusting and locking the opening and closing angle of the adjusting cover plate during operation. Multiple sets of angle adjustment holes are opened through the lower outer side of each side plate, and a rolling pressure roller that can adjust the tilt angle is provided at the front end of the side plate.

[0021] Furthermore, the rolling pressure roller includes two sets of mounting arms. The rear ends of the two sets of mounting arms are respectively hinged to the lower part of the two side plates of the second protective shell through angle adjustment holes. The hinge height and tilt angle of the mounting arms can be adjusted through different angle adjustment holes. A pressure roller is rotatably arranged between the front ends of the two sets of mounting arms. The pressure roller rolls the ground surface in front as the vehicle moves, pressing down the straw and conveying it to the rolling blades on the rear side for shearing.

[0022] Compared with existing technologies, the present invention provides a straw return and simultaneous soil crushing and tillage device. Power is switched on and off by controlling the rocker arm and pressure bar via a steel cable. The device is compact, easy to operate, and has reliable transmission, effectively improving the safety and stability of power control in manual operation scenarios. The device integrates pre-positioned straw crushing and lower rotary tillage functions, completing the entire process of straw lodging, shearing and crushing, uniform spreading, and rotary tillage burying in one operation. This significantly reduces the number of times the machine needs to be used, improving operational efficiency and reducing energy consumption. The multi-position depth adjustment structure can flexibly adapt to different tillage depth requirements. The pre-positioned rolling pressure roller pre-loosens the straw, and the staggered moving and fixed blade shearing pairs effectively improve the thoroughness of straw crushing and the uniformity of spreading. The adjustable cover plate has both operation opening adjustment and storage locking functions. The overall device is highly adaptable and can meet the needs of various field operation scenarios such as small plots and hilly areas. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0024] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the soil-breaking component structure provided in an embodiment of the present invention;

[0026] Figure 3This is a schematic diagram of the structure of the first transmission component and the depth limiting adjustment component provided in an embodiment of the present invention;

[0027] Figure 4 This is a partially enlarged structural schematic diagram of the control element provided in an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the soil crushing component structure provided in an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the straw crushing component structure provided in an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the internal structure of the second protective shell provided in an embodiment of the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] 100. Vehicle body; 101. Vehicle body; 102. Vehicle front; 103. Handle; 104. Controller; 200. Soil-breaking assembly; 201. First transmission component; 201a. First pulley; 201b. Second pulley; 201c. First transmission belt; 201d. First protective shell; 202. Depth limiting adjustment component; 202a. Support boom; 202b. Extension rod; 202c. Resistance rod body; 202d. Height adjustment hole; 202e. Fixed support; 203. Control component; 203a. Control cable; 203b. Rocker arm; 203c. Pressure rod; 203d. Power shaft; 203e. Pressure plate; 203f. Return torsion spring; 204. Soil-breaking component; 2 04a, worm gear; 204b, moving shaft; 204c, worm wheel; 204d, side-bending blade; 204e, moving wheel; 300, straw crushing assembly; 301, connector; 301a, first connecting arm; 301b, second connecting arm; 302, second transmission component; 302a, drive wheel shaft; 302b, third pulley; 302c, second transmission belt; 302d, cutter roller shaft; 302e, rolling blade; 303, second protective shell; 303a, side plate; 303b, adjusting cover plate; 303c, sliding eye; 303d, fixed blade; 303e, angle adjustment hole; 304, rolling pressure roller component; 304a, mounting arm; 304b, pressure roller cylinder. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] Example 1:

[0035] As attached Figures 1 to 7As shown, this embodiment provides a straw-returning and soil-crushing combined tillage device, including a vehicle body 100, a soil-crushing component 200, and a straw-crushing component 300. The soil-crushing component 200 is integrated at the lower end of the vehicle body 100, and the straw-crushing component 300 is located at the front end of the vehicle body 100. The two move synchronously with the vehicle body, sequentially completing the straw crushing and spreading and soil rotary tillage processes, realizing the combined operation of straw return and soil crushing.

[0036] like Figure 1 , Figure 2 As shown, the vehicle body 100 includes a body 101, a front end 102, a handlebar 103, and a controller 104. The front end 102 is fixedly mounted on the upper front of the body 101 and houses an internal combustion engine unit. The handlebar 103 is hinged to the rear of the body 101 for the operator to hold and control the machine for movement and steering. The controller 104 is located on one side of the end of the handlebar 103 and is connected to the control terminal of the control unit 203 via a control circuit, for outputting control commands for power clutch engagement to the control unit 203.

[0037] like Figure 2 , Figure 3 As shown, the soil-breaking assembly 200 includes a first transmission component 201, a depth-limiting adjustment component 202, a control component 203, and a soil-breaking component 204. The first transmission component 201 is disposed in the inner cavity of the vehicle body 101 and is used to transmit the power of the power unit in the front 102 downwards; the depth-limiting adjustment component 202 is disposed on one side of the lower end of the first transmission component 201 and is used to limit the rotary tillage penetration depth of the soil-breaking component 204; the control component 203 is integrated into the lower inner cavity of the first transmission component 201 and is used to control the on / off state of power transmission; the soil-breaking component 204 is disposed at the lower end of the depth-limiting adjustment component 202 and outputs rotary tillage power to break up the soil.

[0038] Specifically, the first transmission component 201 includes a first pulley 201a, a second pulley 201b, a first transmission belt 201c, and a first protective shell 201d. The first pulley 201a is coaxially connected to the power output shaft of the vehicle body 100 and is driven to rotate continuously by the power unit; the second pulley 201b is arranged on one side of the first pulley 201a and located in the inner cavity of the vehicle body 101, and an axial insertion hole is opened in the center of the second pulley 201b; the first transmission belt 201c is tensioned and sleeved on the outside of the first pulley 201a and the second pulley 201b, forming a belt transmission pair; the first protective shell 201d is disposed at the lower end of the vehicle body 101 and located below the second pulley 201b, and is used to wrap and protect the internal control component 203, preventing mud, water, and dust from entering the transmission structure.

[0039] like Figure 3As shown, the depth-limiting adjustment component 202 includes a support arm 202a, a fixed support 202e, an extension rod 202b, and a resistance rod 202c. The support arm 202a is vertically fixedly installed at the lower end of the first protective shell 201d, serving as the main support for the lower working mechanism; the fixed support 202e is fixedly installed on the front side of the support arm 202a, used to connect the straw crushing assembly 300; the extension rod 202b is horizontally connected to the rear side of the support arm 202a; the resistance rod 202c is arranged vertically, and its rod body has multiple sets of height adjustment holes 202d. The resistance rod 202c is fixedly connected to the extension rod 202b by bolts; by changing different height adjustment holes 202d to cooperate with the extension rod 202b, the vertical extension length of the resistance rod 202c can be changed, thereby limiting the maximum soil penetration depth of the soil crushing component 204, adapting to the rotary tillage operation needs of different crops and different soil types.

[0040] like Figure 3 , Figure 4 As shown, the control component 203 includes a power shaft 203d, a pressure plate 203e, a return torsion spring 203f, a rocker arm 203b, a pressure rod 203c, and a control cable 203a. The power shaft 203d is vertically arranged in the inner cavity of the boom 202a, and its upper end is machined with a plug-in section that matches the center plug-in hole of the second pulley 201b; the pressure plate 203e is fixedly arranged on the upper end of the shaft of the power shaft 203d and is located in the inner cavity of the first protective shell 201d; the return torsion spring 203f is sleeved on the upper end of the power shaft 203d, with its upper end abutting against the lower end face of the pressure plate 203e and its lower end abutting against a bearing component. The bearing component is fixedly installed on the inner wall of the boom 202a as a fixed support seat, providing stable lower support for the return torsion spring 203f. The rocker arm 203b is movably mounted in the inner cavity of the first protective shell 201d via a pin. One end of the rocker arm 203b extends out of the first protective shell 201d. A pressure rod 203c is provided on the side of the rocker arm 203b corresponding to the upper end face of the pressure plate 203e. One end of the control cable 203a is hinged to the outer end of the rocker arm 203b, and the other end is connected to the control end of the handle 103 along the handrail wiring.

[0041] The working principle of the power clutch of control component 203 is as follows:

[0042] Under normal conditions, the return torsion spring 203f is in the extended state, pushing the pressure plate 203e upwards. The insertion section at the upper end of the power shaft 203d is inserted into the insertion hole in the center of the second pulley 201b, forming a circumferential lock. At this time, the second pulley 201b drives the power shaft 203d to rotate synchronously through the insertion engagement, and the power is continuously output downwards to the soil crushing component 204, and the machine is in the power-on state.

[0043] When power needs to be disconnected, the operator applies tension to the control cable 203a through the handle 103. The control cable 203a drives the rocker arm 203b to swing, and the pressure rod 203c swings down synchronously with the rocker arm 203b and presses down on the pressure plate 203e. The pressure plate 203e compresses the return torsion spring 203f and drives the power shaft 203d to move axially downward, so that the insertion section completely disengages from the insertion hole of the second pulley 201b, and the circumferential lock is released. At this time, the second pulley 201b rotates freely with the first transmission belt 201c, the power shaft 203d stops rotating, and the machine is in a power disconnected state.

[0044] After the control cable 203a is released, the return torsion spring 203f releases its elastic potential energy and springs back to its original position, driving the power shaft 203d to move upward and reconnect, restoring circumferential locking and power transmission.

[0045] like Figure 5 As shown, the soil crushing component 204 includes a worm 204a, a worm wheel 204c, a moving shaft 204b, a side-curved blade 204d, and a moving wheel 204e. The worm 204a is coaxially connected to the lower end of the power shaft 203d and rotates synchronously with the power shaft 203d; the worm wheel 204c meshes with the worm 204a for transmission, and both are externally fitted with a sealed mounting shell to form transmission protection; the moving shaft 204b is horizontally arranged and coaxially fixedly assembled with the worm wheel 204c; the side-curved blade 204d is circumferentially offset and fixed on the two ends of the moving shaft 204b, and cuts and crushes the soil as the moving shaft 204b rotates; the moving wheel 204e is coaxially assembled at the outermost end of the moving shaft 204b, and is used to support the entire machine when it moves, ensuring smooth movement.

[0046] like Figure 6 As shown, the straw crushing assembly 300 includes a connector 301, a second transmission component 302, a second protective shell 303, and a rolling pressure roller component 304. The connector 301 serves as a support structure, suspending the entire straw crushing assembly 300 at the front end of the vehicle body 100; the second transmission component 302 is mounted on the connector 301 and is used to output the rotational power for straw crushing; the second protective shell 303 is fixed to the front end of the connector 301, forming a closed crushing working chamber; the rolling pressure roller component 304 is located at the lower front end of the second protective shell 303 and is used to pre-pinch down the upright straw on the ground.

[0047] Specifically, the connector 301 includes two sets of first connecting arms 301a and second connecting arms 301b. The two sets of first connecting arms 301a are respectively installed on the two side frames of the vehicle body 100, and the other end is fixedly set on the upper side wall of the second protective shell 303. The second connecting arm 301b is located below the first connecting arm 301a, one end of which is fixedly connected to the fixed support 202e on the front side of the boom frame, and the other end is also fixedly set on the lower side wall of the second protective shell 303. The first connecting arm 301a and the second connecting arm 301b together form a triangular support structure, which stably supports the entire straw crushing assembly 300 and improves the vibration resistance and structural rigidity during operation.

[0048] like Figure 6 , Figure 7 As shown, the second transmission component 302 includes a drive wheel shaft 302a, a third pulley 302b, a second transmission belt 302c, a cutter roller shaft 302d, and multiple sets of roller blades 302e. The drive wheel shaft 302a is rotatably mounted on the first connecting arm 301a, and one end of the drive wheel shaft 302a is equipped with an independent drive motor (not shown in the figure); the other end of the drive wheel shaft 302a is coaxially fixedly mounted with the third pulley 302b; the cutter roller shaft 302d is rotatably mounted in the lower part of the inner cavity of the second protective shell 303, and its shaft end is also coaxially fixed with the third pulley 302b; the second transmission belt 302c is tensioned and sleeved on the outside of the two sets of third pulleys 302b, forming a speed reduction belt transmission pair; multiple sets of roller blades 302e are fixedly and staggered along the axial direction on the cutter roller shaft 302d, and rotate at high speed with the cutter roller shaft 302d to continuously shear and crush the surface straw.

[0049] like Figure 7 As shown, the second protective shell 303 includes two side plates 303a, a mounting shell, fixed blades 303d, and an adjusting cover 303b. The mounting shell is fixed between the two side plates 303a, forming a crushing chamber. Fixed blades 303d are staggered on the inner side of the mounting shell, corresponding to the gaps in the roller blades 302e. The roller blades 302e and fixed blades 303d cooperate to form a shearing pair, shearing the straw and improving the fineness and uniformity of the crushing. The adjusting cover 303b is hinged to the upper front end of the mounting shell. Sliding holes 303c are provided on both sides of the adjusting cover 303b. The sliding holes 303c, in conjunction with locking bolts, can lock and fix the adjusting cover 303b when it is fully closed downwards, preventing accidental opening during machine storage and transport. Simultaneously, during operation, the sliding holes 303c, in conjunction with bolts, can adjust and lock the opening angle of the adjusting cover 303b, thereby changing the flow area of ​​the crushing chamber outlet and the direction of straw scattering. Multiple sets of angle adjustment holes 303e are provided at the corresponding position of the lower part of the side plate 303a. The angle adjustment holes 303e are used to adjust the hinge height and tilt angle of the roller 304.

[0050] like Figure 6 As shown, the rolling pressure roller component 304 includes two sets of mounting arms 304a and a pressure roller cylinder 304b. The rear ends of the two sets of mounting arms 304a are respectively hinged to the lower part of the two side plates 303a of the second protective shell 303 through angle adjustment holes 303e. By selecting different positions of the angle adjustment holes 303e, the hinge height and tilt angle of the mounting arms 304a can be adjusted to adapt to the needs of straw operation with different ground heights and different degrees of lodging. The pressure roller cylinder 304b is rotatably connected between the front ends of the two sets of mounting arms 304a. When the machine moves, it rolls the ground in front, pressing down and flattening the upright straw before conveying it to the roller blades 302e on the rear side for shearing, avoiding the straw standing upright and missing cutting, and improving the fullness of crushing.

[0051] The overall workflow is as follows:

[0052] During operation, the operator holds handle 103 to move the vehicle 100 forward. The front-mounted rolling roller 304 first contacts the ground, flattening the upright straw. Then, the independent drive motor of the second transmission component 302 outputs power, driving the cutter roller shaft 302d via belt drive to rotate the roller blades 302e at high speed. This, combined with the fixed blades 303d, continuously shears and crushes the fallen straw. The crushed straw is then guided by the adjusting cover plate 303b and evenly scattered onto the ground. Immediately afterward, the soil-crushing component 204 below the vehicle uses side-curved blades 204d to rotary tillage and crush the surface soil, simultaneously burying the scattered straw into the soil layer, achieving simultaneous straw return and soil crushing in one operation. During operation, the rotary tillage depth can be adjusted via the depth limit adjustment component 202, the soil-crushing power can be switched on and off at any time via the control component 203, and the straw scattering state can be adjusted via the adjusting cover plate 303b, flexibly adapting to different operating conditions.

[0053] Example 2:

[0054] As attached Figures 1 to 7 As shown, this embodiment of a straw return and simultaneous soil crushing combined tillage device includes a vehicle body 100, a soil crushing component 200, and a straw crushing component 300; the structure and connection relationship of the vehicle body 100, the first transmission component 201, the control component 203, and the soil crushing component 204 are all consistent with those of Embodiment 1.

[0055] In the depth limiting adjustment component 202, the extension rod 202b adopts a multi-stage telescopic sleeve structure. The sleeve rod wall is opened with positioning holes and locking pins to realize length adjustment, replacing the original bolt fixing structure. The horizontal extension position of the resistance rod 202c can be adjusted steplessly to adapt to field operations with different row spacings. The resistance rod 202c still realizes depth adjustment through multiple sets of height adjustment holes 202d.

[0056] In the rolling pressure roller component 304 of the straw crushing assembly 300, the mounting arm 304a adopts a two-section hinge structure, and a buffer spring is set between the two sections of the arm body. It can automatically yield and buffer when encountering hard objects protruding on the ground, so as to avoid the pressure roller 304b being deformed by rigid impact, and at the same time improve the conformal fitting effect on the ground. The rear end of the mounting arm 304a still achieves height and angle adjustment through the angle adjustment hole 303e on the side plate 303a.

[0057] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A straw-returning and soil-crushing combined tillage device, comprising a vehicle body (100), characterized in that, Also includes: A soil-crushing component (200) is disposed at the lower end of the vehicle body (100) for rotary tillage and soil crushing; it also includes a first transmission component (201), which is located in the inner cavity of the vehicle body (100) for providing driving force; the lower end of the first transmission component (201) is provided with a depth-limiting adjustment component (202), a control component (203) and a soil-crushing component (204); the depth-limiting adjustment component (202) is disposed on one side of the lower end of the first transmission component (201) for limiting the rotary tillage depth of the soil-crushing component (204) by changing the soil penetration depth; the control component (203) is located in the inner cavity of the first transmission component (201) for power clutch control by manually tightening or loosening; the soil-crushing component (204) is disposed at the lower end of the depth-limiting adjustment component (202) for crushing soil while controlling the movement of the vehicle body (100); The straw crushing component is located at the front end of the vehicle body (100) and is used to cut and crush the straw on the ground and spread it back to the field. It also includes a connector (301) for use as a support structure and installed on the vehicle body (100). The connector (301) is also provided with a second transmission component (302). The second transmission component (302) is provided with a roller blade (302e) for cutting straw. The front end of the connector (301) is fixedly installed with a second protective shell (303). The roller blade (302e) is located inside the second protective shell (303). The front end of the second protective shell (303) is connected to an adjusting cover plate (303b) by a hinge for adjusting the crushing path and the spreading direction. The front end of the second protective shell (303) is also provided with a ground pressing roller (304) for rolling the ground as the vehicle body (100) moves, so that the straw can be cut by the roller blade (302e) after being pressed down. The soil crushing component (200) and the straw crushing component (300) are both connected to the vehicle body (100) and complete the soil crushing and straw crushing and returning to the field operations synchronously as the vehicle body (100) moves.

2. The straw returning and simultaneous soil crushing combined tillage device according to claim 1, characterized in that, The vehicle body (100) includes a body (101), a front end (102) is fixedly installed on the upper end of the body (101), a handle (103) is hinged to the rear of the body (101), and a controller (104) is provided on one side of the end of the handle (103); the controller (104) is connected to the control terminal of the control component (203) through a control line, and is used to output the control command of the power clutch to the control component (203).

3. The straw returning and simultaneous soil crushing combined tillage device according to claim 2, characterized in that, The first transmission component (201) further includes a first pulley (201a) disposed in the inner cavity of the vehicle body (101). The first pulley (201a) is coaxially connected to the power output shaft of the vehicle head (102). A second pulley (201b) is disposed on one side of the first pulley (201a) and located in the inner cavity of the vehicle body (101). A insertion hole is provided in the center of the second pulley (201b). A first transmission belt (201c) is tensioned and sleeved on the outer sides of the first pulley (201a) and the second pulley (201b). A first protective shell (201d) is disposed at the lower end of the vehicle body (101). The first protective shell (201d) is located below the second pulley (201b) and is used to wrap and protect the control component (203).

4. The straw returning and simultaneous soil crushing combined tillage device according to claim 3, characterized in that, The depth limiting adjustment component (202) includes a support arm (202a) vertically fixedly installed at the lower end of the first protective shell (201d). A fixed support (202e) is fixedly installed on the front side of the support arm (202a). An extension rod (202b) is horizontally connected to the rear side of the support arm (202a). A resistance rod (202c) is fixedly installed on the extension rod (202b) by bolts. The resistance rod (202c) has multiple sets of height adjustment holes (202d) vertically. The resistance rod (202c) changes the vertical extension length by bolting to the extension rod (202b), which is used to limit the rotary tillage operation depth of the soil breaking component (204).

5. The straw returning and simultaneous soil crushing combined tillage device according to claim 4, characterized in that, The control component (203) includes a power shaft (203d) disposed in the inner cavity of the support frame (202a), and the upper end of the power shaft (203d) is provided with a plug-in section adapted to the center plug-in hole of the second pulley (201b); A pressure plate (203e) is provided at the upper end of the shaft of the power shaft (203d) and in the inner cavity of the first protective shell (201d). A return torsion spring (203f) is also sleeved on the upper end of the power shaft (203d). The upper end of the return torsion spring (203f) abuts against the lower end face of the pressure plate (203e), and the lower end abuts against a bearing component. The bearing component is fixedly installed on the inner wall of the support arm (202a) as a fixed support seat. A pressure rod (203c) is also movably installed in the inner cavity of the first protective shell (201d). A rocker arm (203b) is fixedly installed on one side of the pressure rod (203c). The rocker arm (203b) extends out of the first protective shell (201d). A control cable (203a) is hinged to the outer end of the rocker arm (203b). The other end of the control cable (203a) is connected to the control end of the handle (103). By applying force to the control cable (203a), the rocker arm (203b) and the pressure rod (203c) swing, pressing down the pressure plate (203e), which, in conjunction with the compression of the return torsion spring (203f), drives the power shaft (203d) to move down, causing the insertion section to separate from the insertion hole, and the power shaft (203d) to stop rotating, thus performing power disconnection control; By not applying force to the control cable (203a), the return torsion spring (203f) springs back to its original position, driving the power shaft (203d) to move upward, so that the insertion section at the upper end of the power shaft (203d) is inserted into the insertion hole in the center of the second pulley (201b). The power shaft (203d) rotates synchronously with the second pulley (201b) to keep the power connected.

6. The straw returning and simultaneous soil crushing combined tillage device according to claim 5, characterized in that, The soil crushing component (204) includes a worm (204a) coaxially connected to the lower end of the power shaft (203d). A worm wheel (204c) is meshed with one side of the worm (204a). A mounting shell is fitted around the worm wheel (204c) and the worm (204a). A horizontally arranged movable shaft (204b) is coaxially mounted on the worm wheel (204c). Side-bent blades (204d) are fixed circumferentially on the shaft bodies at both ends of the movable shaft (204b). A movable wheel (204e) is coaxially mounted on the outermost end of the movable shaft (204b) for supporting the movement of the entire device with the vehicle body (100).

7. The straw return and simultaneous soil crushing combined tillage device according to claim 4, characterized in that, The connector (301) includes two sets of first connecting arms (301a) installed on both sides of the vehicle body (100). The other ends of the two sets of first connecting arms (301a) are respectively fixed on the second protective shell (303). A second connecting arm (301b) is provided below the first connecting arm (301a). One end of the second connecting arm (301b) is fixedly connected to the fixed support (202e), and the other end is also fixedly installed on the second protective shell (303). The first connecting arm (301a) and the second connecting arm (301b) form a triangular support structure to support the straw crushing assembly (300). The transmission structure of the second transmission component (302) is installed on the connector (301).

8. The straw return and simultaneous soil crushing combined tillage device according to claim 7, characterized in that, The transmission structure of the second transmission component (302) includes a drive wheel shaft (302a) mounted on the first connecting arm (301a). One end of the drive wheel shaft (302a) is equipped with a drive motor, and the other end is equipped with a third pulley (302b). A second transmission belt (302c) is provided on the outer side of the third pulley (302b), and a pulley is provided on the other end of the second transmission belt (302c). A cutter roller shaft (302d) is coaxially fixed to the pulley. Roller blades (302e) are fixed axially at intervals on the cutter roller shaft (302d) for shearing and crushing the surface straw as the cutter roller shaft (302d) rotates.

9. A straw-returning and soil-crushing combined tillage device according to claim 8, characterized in that, The second protective shell (303) includes side plates (303a) on both sides, and a mounting shell is fixed between the side plates (303a). Fixed blades (303d) are staggered on the inner side of the mounting shell corresponding to the gap of the roller blades (302e). The roller blades (302e) and the fixed blades (303d) cooperate to form a shearing pair. An adjusting cover plate (303b) is also provided on the mounting shell via a hinge. A sliding eye (303c) is installed on the adjusting cover plate (303b) to cooperate with fasteners to lock and fix the adjusting cover plate (303b) when it is fastened, and to adjust and lock the opening and closing angle of the adjusting cover plate (303b) during operation. Multiple sets of angle adjustment holes (303e) are opened through the lower outer side of each side plate (303a). A rolling pressure roller (304) that can adjust the tilt angle is provided at the front end of the side plate (303a).

10. A straw-returning and soil-crushing combined tillage device according to claim 9, characterized in that, The rolling pressure roller (304) includes two sets of mounting arms (304a). The rear ends of the two sets of mounting arms (304a) are respectively hinged to the lower part of the two side plates (303a) of the second protective shell (303) through the angle adjustment holes (303e). The hinge height and tilt angle of the mounting arms (304a) are adjusted through different angle adjustment holes (303e). A pressure roller (304b) is rotatably arranged between the front ends of the two sets of mounting arms (304a). The pressure roller (304b) rolls the ground surface in front as the vehicle body (100) moves, and after pressing the straw, it is conveyed to the rolling blade (302e) on the rear side for shearing.

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