Wheat straw crushing and returning device

Abstract

The application provides a wheat straw crushing and returning to field device, and relates to the field of agricultural machinery, comprising: a mounting assembly, the mounting assembly comprising a protective fairing and a connecting seat; the mounting assembly further comprising a cutter head shaft and a radial cutter head; an axial assembly, the axial assembly comprising a flail mechanism and an adjusting mechanism; the flail mechanism comprising an axial cutter head, a track flail, a limiting rod and a blocking block, the axial cutter head being fixedly installed on the top of the track flail, the track flail being inserted into the inside of the cutter head shaft, the limiting rod being rotatably connected to the inside of the cutter head shaft, and the blocking block being inserted into the inside of the track flail; the adjusting mechanism comprising a synchronous rod and a control rod, the synchronous rod being rotatably connected to the inside of the cutter head shaft, and the control rod being inserted into the side of the protective fairing. The wheat straw crushing and returning to field device can realize effective returning of straw to field, is stable and efficient in use, and can control the use state and parameters as required to adapt to the returning to field demand of wheat straw in different lodging states, and has high flexibility, adaptability and practicability.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of agricultural machinery technology, in particular to a wheat straw crushing and returning to field device. BACKGROUND

[0002] Wheat straw is an important agricultural waste, which contains rich organic matter, nitrogen, phosphorus, potassium and other nutrient elements. The crushing and returning to field of wheat straw can realize resource recycling. The principle is that the crushed straw is gradually converted into soil organic matter and available nutrients through microbial decomposition, which can improve soil structure, enhance soil water and fertilizer conservation capacity, and improve soil fertility. At the same time, straw mulching on the ground can reduce soil erosion, inhibit weed growth, and reduce the use of chemical fertilizers, which meets the needs of ecological agricultural development. It is of great significance to improve crop yield and promote sustainable agricultural development. At present, the wheat straw crushing and returning to field device is mainly driven by a tractor. The power output shaft of the tractor drives the knife shaft to rotate at high speed through universal joints, gearboxes and other transmission components, which drives the blade to cut the straw.

[0003] The existing wheat straw crushing and returning to field device has the problem that when in use, since the setting direction of the crushing cutter is radially set along the rotation direction, the crushing cutter has good crushing and cutting effect on the wheat straw that is flat and the flat direction is perpendicular to the moving direction. Because the straw and the cutter rotation cutting direction intersect, it is easy to be rolled into the cutting range, but for the wheat straw that is straight or the flat direction is parallel to the moving direction, because the straw and the cutter rotation cutting, crushing direction is parallel, it is difficult to be effectively captured and cut by the crushing cutter, resulting in poor crushing and returning to field effect and low practicability. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the above-mentioned defects existing in the prior art, and to provide a wheat straw crushing and returning to field device which can realize effective straw returning to field, stable and efficient use, and can adjust the use state and use parameters as needed to adapt to the returning to field needs of wheat straw in different flat states, and has high flexibility, adaptability and practicability.

[0005] The technical scheme adopted by the present application to solve its technical problems is as follows: a wheat straw crushing and returning to field device, comprising: a mounting assembly, the mounting assembly comprises a protective fairing and a connecting seat, one side of the connecting seat is fixedly installed on the side of the protective fairing, and the other side of the connecting seat is detachably fixedly installed on the tail end of a traction equipment; the mounting assembly further comprises a cutter head shaft and a radial cutter head, the cutter head shaft is rotatably connected to the side of the protective fairing, and the radial cutter head is rotatably connected to the outside of the cutter head shaft, the side of the cutter head shaft is provided with a driving belt pulley, and the driving belt pulley is drivingly connected to the driving shaft of the traction equipment through a belt; an axial assembly, the axial assembly comprises a flinging block mechanism and an adjusting mechanism; the flinging block mechanism comprises an axial cutter head, a track flinging block, a limiting rod and a blocking block, the axial cutter head is fixedly installed on the top of the track flinging block, and the track flinging block is inserted into the inside of the cutter head shaft, the limiting rod is rotatably connected to the inside of the cutter head shaft, and the blocking block is inserted into the inside of the track flinging block; the adjusting mechanism comprises a synchronous rod and a control rod, the synchronous rod is rotatably connected to the inside of the cutter head shaft, and the control rod is inserted into the side of the protective fairing.

[0006] Preferably, the cutter body of the radial cutter head is arranged in the radial direction of the cutter head shaft, the cutter body of the axial cutter head is arranged in the axial direction of the cutter head shaft, the outside of the axial cutter head is provided with barbed saw teeth, and the barbed saw teeth are directed to the rotation direction of the cutter head shaft, the axial cutter head and the flinging block mechanism are provided with a plurality of groups arranged alternately on the cutter head shaft, and the inside of the protective fairing is provided with spiral guide ribs.

[0007] Preferably, the bottom of the axial cutter head is provided with a reset tension spring, and the two ends of the reset tension spring are fixedly connected to the bottom of the axial cutter head and the inside of the cutter head shaft respectively.

[0008] Preferably, the inside of the track flinging block is provided with an upper and lower closed limiting groove, and the blocking block is inserted into the inside of the limiting groove, and the block body cross section of the blocking block is a regular polygon.

[0009] Preferably, the rod body of the limiting rod is provided with threads on the outside, and the limiting rod is screwed into the inside of the blocking block through the rod body threads.

[0010] Preferably, the bottom of the limiting rod is provided with a positioning gear, and the outside of the synchronous rod is provided with an adjusting gear, and the adjusting gear and the positioning gear are in meshing transmission.

[0011] Preferably, the side of the control rod is provided with a linkage rod with a regular polygon cross section, and the inside of the synchronous rod is provided with a linkage groove, and the linkage rod is inserted into the inside of the linkage groove.

[0012] Preferably, the inside of the linkage rod is provided with a locking top spring, and the two ends of the locking top spring abut against the inside of the linkage rod and the inside of the synchronous rod respectively.

[0013] Preferably, the inside of the protective fairing is provided with a locking tooth groove, and the side of the control rod is provided with a locking gear, under the action of the locking top spring, when the control rod is not pressed by external force, the locking gear is inserted in the inside of the locking tooth groove.

[0014] The wheat straw smashing and returning to field device has the following advantages:

[0015] The cutter head shaft in the wheat straw smashing and returning to field device can rotate at high speed under the transmission of the traction equipment driving shaft, so as to drive the radial cutter head to smash, cut and the like the wheat straw, and the device is suitable for the smashing and returning to field operation of the wheat straw which has been pretreated in terms of the lodging state and direction, the axial assembly can perform the smashing and returning to field operation on the wheat straw which has not been pretreated, the axial cutter head is arranged along the axial direction of the cutter head shaft, so as to stably and efficiently capture the wheat straw which is straight or in the lodging direction parallel to the moving direction, and make the wheat straw enter the protective fairing, and through the synergistic rubbing, cutting and smashing of the cutter and the protective fairing, the effective returning to field of the straw is realized, the device is stable and efficient in use, and the axial assembly can be controlled in use state and use parameter as needed, so as to adapt to different returning to field demands, and the flexibility, adaptability and practicability of the device are improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is an external structure schematic diagram of the embodiment of the wheat straw smashing and returning to field device of the application;

[0017] Figure 2 is an external structure schematic diagram of the embodiment of the wheat straw smashing and returning to field device of the application from another perspective;

[0018] Figure 3 is a structure schematic diagram of the bottom of the embodiment of the wheat straw smashing and returning to field device of the application;

[0019] Figure 4 is a structure schematic diagram of the inside of the embodiment of the wheat straw smashing and returning to field device of the application;

[0020] Figure 5 is Figure 4 is an enlarged structure schematic diagram of position A in FIG. 4;

[0021] Figure 6 is a structure schematic diagram of the embodiment of the wheat straw smashing and returning to field device of the application after the adjustment mechanism and the cutter head shaft are disassembled;

[0022] Figure 7 is a structure schematic diagram of the embodiment of the wheat straw smashing and returning to field device of the application after the flinging block mechanism is disassembled;

[0023] Figure 8 is a structure schematic diagram of the inside of the embodiment of the wheat straw smashing and returning to field device of the application when the wheat straw is smashed and returned to field;

[0024] Figure 9 is Figure 8 enlarged structure diagram of B in the middle;

[0025] Figure 10 is Figure 8 structure diagram of the wheat straw in the middle;

[0026] Figure 11 is the structure diagram of the inside of the wheat straw crushing and returning to the field device according to the embodiment of the present application when the lower control lever is pressed;

[0027] Figure 12 is Figure 11 enlarged structure diagram of C in the middle;

[0028] List of reference signs:

[0029] 1, mounting assembly; 101, protective fairing; 1011, locking tooth groove; 1012, spiral fairing rib; 102, connecting seat; 103, cutter head shaft; 1031, driving belt pulley; 104, radial cutter head;

[0030] 2, flail mechanism; 201, axial cutter head; 2011, reset tension spring; 2012, barbed sawtooth; 202, track flail; 2021, limiting groove; 203, limiting rod; 2031, positioning gear; 204, blocking block;

[0031] 3, adjusting mechanism; 301, synchronous rod; 3011, adjusting gear; 3012, linkage groove; 302, control lever; 3021, linkage rod; 3022, locking top spring; 3023, locking gear. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application.

[0033] Embodiment one: please refer to Figures 1-12 :

[0034] The application provides a wheat straw smashing and returning to field device, which comprises a mounting assembly 1, the mounting assembly 1 comprises a protective fairing 101 and a connecting seat 102, one side of the connecting seat 102 is fixedly installed on the side surface of the protective fairing 101, and the other side of the connecting seat 102 is detachably fixedly installed on the tail end of a traction equipment; the mounting assembly 1 further comprises a cutter head shaft 103 and a radial cutter head 104, the cutter head shaft 103 is rotatably connected to the side surface of the protective fairing 101, and the radial cutter head 104 is rotatably connected to the outside of the cutter head shaft 103, the side surface of the cutter head shaft 103 is provided with a driving belt pulley 1031, and the driving belt pulley 1031 is drivingly connected with the driving shaft of the traction equipment through a belt; an axial assembly, the axial assembly comprises a flinging block mechanism 2 and an adjusting mechanism 3; the flinging block mechanism 2 comprises an axial cutter head 201, a track flinging block 202, a limiting rod 203 and a blocking block 204, the axial cutter head 201 is fixedly installed on the top of the track flinging block 202, and the track flinging block 202 is inserted into the inside of the cutter head shaft 103, the limiting rod 203 is rotatably connected to the inside of the cutter head shaft 103, and the blocking block 204 is inserted into the inside of the track flinging block 202; the adjusting mechanism 3 comprises a synchronous rod 301 and a control rod 302, the synchronous rod 301 is rotatably connected to the inside of the cutter head shaft 103, and the control rod 302 is inserted into the side surface of the protective fairing 101.

[0035] Wherein, the cutter body of the radial cutter head 104 is arranged along the radial direction of the cutter head shaft 103, and the cutter body of the axial cutter head 201 is arranged along the axial direction of the cutter head shaft 103, the outside of the axial cutter head 201 is provided with a barbed sawtooth 2012, and the barbed sawtooth 2012 faces the rotation direction of the cutter head shaft 103, the axial cutter head 201 and the flinging block mechanism 2 are provided with a plurality of groups arranged alternately on the cutter head shaft 103, and the inside of the protective fairing 101 is provided with a spiral guide rib 1012; in use, the cutter head shaft 103 can rotate at high speed under the transmission of the driving shaft of the traction equipment, so as to drive the radial cutter head 104 to perform the operations of smashing and cutting on the wheat straw, the cutter head shaft 103 can rotate at high speed under the transmission of the driving shaft of the traction equipment, so as to drive the radial cutter head 104 to perform the operations of smashing and cutting on the wheat straw which is laid flat and the direction of which is perpendicular to the moving direction, the radial cutter head 104 arranged along the radial direction forms a radial cutting surface when rotating, the preprocessed wheat straw has adjusted the laid flat state and direction, the moving direction of the straw forms an intersection angle with the rotating cutting direction of the radial cutter head 104, and the straw can be quickly rolled into the cutting range, the impact force generated by the high-speed rotation of the radial cutter head 104 can directly act on the straw, and the smashing and cutting are completed through shearing and chopping, finally, the smashed wheat straw can be flung out of the inside of the protective fairing 101 to realize the returning to field operation under the guide action of the protective fairing 101, and the device is convenient and flexible to use.

[0036] The bottom of the axial cutter head 201 is provided with a reset tension spring 2011, and the two ends of the reset tension spring 2011 are fixedly connected to the bottom of the axial cutter head 201 and the inside of the cutter shaft 103 respectively. In use, for the wheat straw that has not been pretreated, when the installation assembly 1 moves following the traction device, the axial assembly can cooperate with the radial cutter head 104 to realize the operations of capturing, rubbing, cutting and smashing the wheat straw. When the installation assembly 1 moves following the traction device, the radial cutter head 104 can still capture part of the wheat straw to perform the operation of smashing and returning to the field. For the wheat straw that is straight or in a direction parallel to the moving direction, it will be captured and smashed and returned to the field by the axial assembly. When the cutter shaft 103 rotates, the flail mechanism 2 can rotate following the cutter shaft 103, so that in the rotating process, the track flail 202 generates a centrifugal force to make the axial cutter head 201 protrude out of the cutter shaft 103 and lengthen the reset tension spring 2011. Specifically, the cutter body of the axial cutter head 201 extends along the axial direction of the cutter shaft 103, and the cutting edge thereof is designed as a “barbed sawtooth structure”. The barbed sawtooth 2012 faces the rotating direction of the cutter head. When the cutter shaft 103 drives the axial cutter head 201 to rotate at a high speed, the barbed sawtooth 2012 can actively hook the straight or parallel straw rod body to the moving direction. At the same time, the length of the axial cutter head 201 protruding out of the cutter shaft 103 can be regulated by the blocking block 204, so as to ensure that the sawtooth can penetrate into the straw layer (covering height 50-200 mm) and avoid the failure of hooking due to the too short protrusion. After hooking the straw, the rotation of the axial cutter head 201 will generate an axial traction along the cutter shaft 103, which, in cooperation with the spiral guide ribs 1012 on the inside of the protective flow guide cover 101, can straighten and guide the straw to the cutting area of the radial cutter head 104, so as to complete the adjustment of the posture of the straw without additional straightening components, so that under the action of the axial cutter head 201 arranged in the axial direction, the straight or the wheat straw in a direction parallel to the moving direction can be stably and efficiently captured to enter the inside of the protective flow guide cover 101 for the operation of smashing, etc., and finally discharged from the inside of the protective flow guide cover 101 for the operation of returning to the field. When the axial cutter head 201 faces the straight or the wheat straw in a direction parallel to the moving direction, the axially extended cutter can actively hook and lift the straw like a “comb” by means of the axial thrust generated by the rotation, so as to overcome the problem that such straw is difficult to be captured due to the parallel direction with the radial cutter, stably guide it into the protective flow guide cover 101 for the operation of smashing, and use stably and efficiently.

[0037] The inside of the track throwing block 202 is provided with an upper and lower closed limiting groove 2021, and the blocking block 204 is inserted in the inside of the limiting groove 2021, and the block section of the blocking block 204 is a regular polygon; the rod body of the limiting rod 203 is provided with a thread outside, and the limiting rod 203 is screwed in the inside of the blocking block 204 through the rod body thread; in use, the radial length of the axial cutter head 201 extending out of the cutter head shaft 103 (i.e. the effective working range of the axial cutter head 201) can be controlled when working, so as to adapt to use in different topography, when the cutter head shaft 103 does not rotate, the reset tension spring 2011 can reset the axial cutter head 201, so that the axial cutter head 201 can tightly adhere to the cutter head shaft 103, avoiding the phenomenon of bumping of the axial cutter head 201 during movement and transportation, when the cutter head shaft 103 rotates, the radial length of the axial cutter head 201 extending out of the cutter head shaft 103 is limited by the blocking block 204, the blocking block 204 can limit the maximum length of the track throwing block 202 by blocking the limiting groove 2021, so as to realize the function of controlling the effective working range of the axial cutter head 201; the bottom of the limiting rod 203 is provided with a positioning gear 2031, and the outside of the synchronous rod 301 is provided with an adjusting gear 3011, the adjusting gear 3011 and the positioning gear 2031 are engaged and transmitted; the synchronous rod 301 can be rotated by controlling the rod 302, when the synchronous rod 301 rotates, the adjusting gear 3011 can drive the limiting rod 203 to rotate through the positioning gear 2031, when the limiting rod 203 rotates, the blocking block 204 can move up and down in the inside of the limiting groove 2021 through the rod body thread, so as to change the use position of the blocking block 204 in the limiting groove 2021, that is, change the maximum extension length of the track throwing block 202 when the blocking block 204 blocks the bottom of the limiting groove 2021, the control is convenient and the use is flexible.

[0038] The side of the control rod 302 is provided with a linkage rod 3021 with a cross section of a regular polygon, and the inside of the synchronous rod 301 is provided with a linkage groove 3012, and the linkage rod 3021 is inserted into the inside of the linkage groove 3012; in use, considering that the agricultural equipment is generally accompanied by large and frequent vibration when in use, therefore, the adjusting mechanism 3 has a self-locking structure to avoid the phenomenon that the synchronous rod 301 is accidentally rotated to change the use parameters of the flail block mechanism 2 due to vibration when in use; the inside of the linkage rod 3021 is provided with a locking top spring 3022, and the two ends of the locking top spring 3022 are respectively abutted against the inside of the linkage rod 3021 and the inside of the synchronous rod 301; the inside of the protective fairing 101 is provided with a locking gear slot 1011, and the side of the control rod 302 is provided with a locking gear 3023, under the action of the locking top spring 3022, when the control rod 302 is not pressed by external force, the locking gear 3023 is inserted into the inside of the locking gear slot 1011; in the reset state, the locking top spring 3022 can insert the locking gear 3023 into the inside of the locking gear slot 1011, so that the control rod 302 cannot be rotated and is locked, and the linkage rod 3021 of the control rod 302 can synchronize the locking of the synchronous rod 301 through the linkage groove 3012, so that the synchronous rod 301 will not be accidentally rotated to change the use parameters of the flail block mechanism 2 due to vibration when working, and the use is stable, when it is necessary to artificially adjust the use parameters of the flail block mechanism 2, the control rod 302 only needs to be pressed and rotated, after the control rod 302 is pressed, the locking top spring 3022 is compressed, and the locking gear 3023 is out of the inside of the locking gear slot 1011, thereafter, the control rod 302 can be freely rotated, and when the control rod 302 is rotated, the linkage rod 3021 can drive the synchronous rod 301 to rotate through the linkage groove 3012, so as to realize the function of adjusting and controlling the use parameters of the flail block mechanism 2, after the adjustment is completed, the adjusting mechanism 3 is automatically reset and self-locked, the adjusting and controlling is convenient and flexible, and the use is stable.

[0039] The working process and specific use mode of the wheat straw crushing and returning device embodiment of the application are as follows:

[0040] In the wheat straw smashing and returning to field device, the cutter head shaft 103 can rotate at high speed under the transmission of the driving shaft of the traction equipment, so as to drive the radial cutter head 104 to perform smashing, cutting and other operations on the wheat straw, the cutter head shaft 103 can rotate at high speed under the transmission of the driving shaft of the traction equipment, so as to drive the radial cutter head 104 to perform smashing, cutting and other operations on the wheat straw which is flat and the flat direction is perpendicular to the moving direction, the radial cutter head 104 arranged in the radial direction forms a radial cutting surface when rotating, the pretreated wheat straw has adjusted the flat state and direction, the straw direction forms an intersection angle with the rotating cutting direction of the radial cutter head 104, can be quickly rolled into the cutting range, the impact force generated by the high-speed rotation of the radial cutter head 104 can directly act on the straw, and the smashing and cutting are completed through shearing and chopping, finally, under the guiding effect of the protective flow guide cover 101, the smashed wheat straw can be thrown out of the interior of the protective flow guide cover 101 to realize the returning to field operation;

[0041] For the wheat straw without pretreatment, when the installation assembly 1 moves following the traction device, the axial assembly can cooperate with the radial cutter head 104 to realize the operations of capturing, rubbing, cutting and smashing the wheat straw, and when the installation assembly 1 moves following the traction device, the radial cutter head 104 can still capture part of the wheat straw to perform the smashing and returning operation, for the wheat straw which is in the upright or lodging direction parallel to the moving direction, it will be captured and smashed by the axial assembly and returned to the field, when the cutter shaft 103 rotates, the flail mechanism 2 can rotate following the cutter shaft 103, so that in the rotating process, the track flail 202 will generate centrifugal force to make the axial cutter head 201 extend out of the cutter shaft 103 and lengthen the reset spring 2011, the cutter body of the axial cutter head 201 extends along the axial direction of the cutter shaft 103, and the cutting edge thereof is designed as a “barbed sawtooth structure”, the barbed sawtooth 2012 faces the rotating direction of the cutter head, when the cutter shaft 103 drives the axial cutter head 201 to rotate at high speed, the barbed sawtooth 2012 can actively hook the straw stem which is in the upright or parallel direction to the moving direction, at the same time, the length of the axial cutter head 201 extending out of the cutter shaft 103 can be regulated by the blocking block 204, to ensure that the sawtooth can penetrate into the straw layer (covering height 50-200mm), and avoid the hooking failure caused by the too short extension, after hooking the straw, the rotation of the axial cutter head 201 will generate a traction force along the axial direction of the cutter shaft 103, which cooperates with the spiral guide ribs 1012 inside the protective guide cover 101 to straighten and guide the straw to the cutting area of the radial cutter head 104, without additional straightening components, the adjustment of the posture of the straw can be completed, so that under the action of the axial cutter head 201 arranged in the axial direction, the wheat straw which is in the upright or lodging direction parallel to the moving direction can be stably and efficiently captured to enter the interior of the protective guide cover 101 for the operations of smashing and the like, and at the same time, finally discharged from the interior of the protective guide cover 101 for the returning operation, when the axial cutter head 201 faces the straw which is in the upright or lodging direction parallel to the moving direction, the axially extended cutter can actively hook and pick up the straw like a “comb” by means of the axial thrust generated by the rotation, to overcome the problem that this kind of straw is difficult to be captured due to the parallel direction with the radial cutter, and stably guide it into the protective guide cover 101 for the smashing operation;

[0042] The radial length of the axial cutter head 201 extending out of the cutter head shaft 103 (i.e. the effective working range of the axial cutter head 201) can be adjusted to adapt to different terrains, and the reset spring 2011 can reset the axial cutter head 201 when the cutter head shaft 103 is not rotating, so that the axial cutter head 201 can be tightly attached to the cutter head shaft 103 to avoid bumps and other phenomena during movement and transportation. When the cutter head shaft 103 is rotating, the radial length of the axial cutter head 201 extending out of the cutter head shaft 103 is limited by the blocking block 204, and the blocking block 204 can limit the maximum length of the track block 202 by blocking the limiting slot 2021, thereby achieving the function of adjusting the effective working range of the axial cutter head 201. The synchronous rod 301 can be rotated by the control rod 302, and the limiting rod 203 can be rotated by the adjusting gear 3011 when the synchronous rod 301 is rotating, and the blocking block 204 can move up and down in the limiting slot 2021 by the rod body thread when the limiting rod 203 is rotating, thereby changing the use position of the blocking block 204 in the limiting slot 2021, i.e. changing the maximum extension length of the track block 202 when the blocking block 204 blocks the bottom of the limiting slot 2021.

[0043] Considering that agricultural equipment is generally accompanied by large and frequent vibrations during use, the adjusting mechanism 3 has a self-locking structure to avoid the phenomenon of accidental rotation of the synchronous rod 301 due to vibration and change of the use parameters of the block mechanism 2. In the reset state, the locking spring 3022 can insert the locking gear 3023 into the locking tooth groove 1011, so that the control rod 302 cannot be rotated and is locked. The linkage rod 3021 of the control rod 302 can synchronize and lock the synchronous rod 301 through the linkage slot 3012, so that the synchronous rod 301 will not accidentally rotate and change the use parameters of the block mechanism 2 during work due to vibration, and the use is stable. When it is necessary to manually adjust the use parameters of the block mechanism 2, the control rod 302 only needs to be pressed and rotated. After the control rod 302 is pressed, the locking spring 3022 is compressed and the locking gear 3023 is removed from the inside of the locking tooth groove 1011. Thereafter, the control rod 302 can be freely rotated, and the linkage rod 3021 can drive the synchronous rod 301 to rotate through the linkage slot 3012 when the control rod 302 is rotating, thereby achieving the function of adjusting the use parameters of the block mechanism 2. After the adjustment is completed, the adjusting mechanism 3 is automatically reset and self-locked.

Claims

1. A wheat straw pulverizing and returning to field device, comprising: The installation assembly (1) comprises a protective fairing (101) and a connecting seat (102), one side of the connecting seat (102) is fixedly installed on the side of the protective fairing (101), and the other side of the connecting seat (102) is detachably fixedly installed on the tail end of the traction equipment; characterized in that the installation assembly (1) further comprises a cutter head shaft (103) and a radial cutter head (104), the cutter head shaft (103) is rotatably connected to the side of the protective fairing (101), and the radial cutter head (104) is rotatably connected to the outside of the cutter head shaft (103); the side of the cutter head shaft (103) is provided with a driving belt pulley (1031), and the driving belt pulley (1031) is in transmission connection with the driving shaft of the traction equipment through a belt; an axial assembly comprises a flail mechanism (2) and an adjusting mechanism (3); the flail mechanism (2) comprises an axial cutter head (201), a track flail (202), a limiting rod (203) and a blocking block (204), the axial cutter head (201) is fixedly installed on the top of the track flail (202), and the track flail (202) is inserted into the inside of the cutter head shaft (103); the limiting rod (203) is rotatably connected to the inside of the cutter head shaft (103), and the blocking block (204) is inserted into the inside of the track flail (202); the adjusting mechanism (3) comprises a synchronous rod (301) and a control rod (302), the synchronous rod (301) is rotatably connected to the inside of the cutter head shaft (103), and the control rod (302) is inserted into the side of the protective fairing (101). The inside of the track flail (202) is provided with an upper and lower closed limiting groove (2021), and the blocking block (204) is inserted into the inside of the limiting groove (2021), and the block section of the blocking block (204) is a regular polygon; The rod body of the limiting rod (203) is provided with threads, and the limiting rod (203) is screwed into the inside of the blocking block (204) through the rod body threads; The bottom of the limiting rod (203) is provided with a positioning gear (2031), and the outside of the synchronous rod (301) is provided with an adjusting gear (3011), and the adjusting gear (3011) and the positioning gear (2031) are in meshing transmission.

2. The wheat straw crushing and returning to field device according to claim 1, characterized in that, The cutter body of the radial cutter head (104) is arranged along the radial direction of the cutter head shaft (103), and the cutter body of the axial cutter head (201) is arranged along the axial direction of the cutter head shaft (103); the outside of the axial cutter head (201) is provided with a barbed sawtooth (2012), and the barbed sawtooth (2012) faces the rotation direction of the cutter head shaft (103); the axial cutter head (201) and the flail mechanism (2) are provided with a plurality of groups arranged alternately on the cutter head shaft (103), and the inside of the protective fairing (101) is provided with a spiral guide rib (1012).

3. The wheat straw crushing and returning to field device according to claim 2, characterized in that, The bottom of the axial cutter head (201) is provided with a reset tension spring (2011), and the two ends of the reset tension spring (2011) are fixedly connected to the bottom of the axial cutter head (201) and the inside of the cutter head shaft (103) respectively.

4. The wheat straw crushing and returning to field device according to claim 3, characterized in that, The side of the control rod (302) is provided with a linkage rod (3021) with a cross section of a regular polygon, and the inside of the synchronous rod (301) is provided with a linkage groove (3012), and the linkage rod (3021) is inserted into the inside of the linkage groove (3012).

5. The wheat straw pulverizing and returning to field device according to claim 4, characterized in that, The inside of the linkage rod (3021) is provided with a locking top spring (3022), and the two ends of the locking top spring (3022) are respectively abutted against the inside of the linkage rod (3021) and the inside of the synchronous rod (301).

6. The wheat straw pulverizing and returning to field device according to claim 5, characterized in that, The inside of the protective fairing (101) is provided with a locking gear slot (1011), and the side of the control rod (302) is provided with a locking gear (3023), under the action of the locking top spring (3022), when the control rod (302) is not pressed by external force, the locking gear (3023) is inserted into the inside of the locking gear slot (1011).

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