A straw crushing and returning machine

Abstract

The invention discloses a straw crushing and returning machine to the field, which is hooked to a tractor, including a frame, a suspension frame group, a supporting mechanism, a transmission mechanism and a cutting mechanism, wherein the frame has an open internal space; the suspension frame group is installed on the frame, and the frame is connected to the tractor through the suspension frame group; the supporting mechanism is connected to the frame, and its supporting frame is higher than the ground and moves with the tractor; the transmission mechanism is installed on the top of the frame, and the transmission mechanism is connected to the power output shaft of the tractor; the cutting mechanism includes a first cutter disc group and a second cutter disc group with a rotation radius smaller than the first cutter disc group, the first cutter disc group and the second cutter disc group are respectively arranged on both sides of the internal space, and the first cutter disc group and the second cutter disc group are both connected to the transmission mechanism. The first cutter disc group and the second cutter disc group of the invention have different rotation radii, the first cutter disc group cuts four rows, and the second cutter disc group cuts two rows, and the cotton stalks of one film and six rows can be crushed and returned to the field at one time, thereby improving work efficiency and crushing quality.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural equipment, and more particularly to a straw crushing and returning machine to the field. Background Art

[0002] Straw crushing and returning to the field can improve the soil structure of farmland, increase the content of soil organic matter, and prevent soil compaction. It is an important process in cotton planting. The straw crushing and returning machine has the advantages of high working efficiency and low energy consumption, and has been widely used in the process of straw crushing and returning to the field.

[0003] However, the current large-scale cotton planting uses the planting model of one film and six rows of machine-picked cotton. The planting spacing must be configured at 66+10cm, and the original straw crushing and returning machine is mainly for non-machine-picked cotton planting models, such as the 20mm+40mm row spacing planting method, which can no longer meet the existing agronomic requirements of machine-picked cotton with one film and six rows.

[0004] Therefore, providing a straw crushing and returning machine suitable for the one-film six-row planting mode of machine-picked cotton is an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0005] In view of this, the present invention provides a straw crushing and returning machine to the field, aiming to solve one of the above-mentioned technical problems in the prior art at least to a certain extent.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A straw crushing and returning machine is mounted on a tractor and comprises a frame, a suspension frame group, a supporting mechanism, a transmission mechanism and a cutting mechanism.

[0008] The frame has an open internal space;

[0009] The suspension frame group is installed on the frame, and the frame is connected to the tractor through the suspension frame group;

[0010] The support mechanism is connected to the frame, and supports the frame above the ground to move with the tractor;

[0011] The transmission mechanism is installed on the top of the frame, and the transmission mechanism is in transmission connection with the power output shaft of the tractor;

[0012] The cutting mechanism includes a first cutter disc group and a second cutter disc group having a smaller rotation radius than the first cutter disc group. The first cutter disc group and the second cutter disc group are respectively arranged on both sides of the internal space. The first cutter disc group and the second cutter disc group are both connected to the transmission mechanism.

[0013] By adopting the above scheme, the beneficial effects of the present invention are:

[0014] The frame is suspended and towed by the tractor, and the power output shaft of the tractor is connected to the transmission mechanism to drive the cutting mechanism to rotate. During operation, the tractor drags the frame forward along the cotton stalks, while the first and second cutter disc groups rotate at high speed to crush the straw and throw it out of the frame. The first cutter disc group and the second cutter disc group have different rotation radius. The first cutter disc group cuts four rows, and the second cutter disc group cuts two rows. It can crush the cotton stalks of one film and six rows returned to the field at one time, which is suitable for the planting mode of one film and six rows of machine-picked cotton, and improves work efficiency and crushing quality.

[0015] Furthermore, the frame includes an upper guard plate and side guard plates distributed circumferentially along the upper guard plate, and the upper guard plate and the side guard plates are connected by bolts.

[0016] The beneficial effect of adopting the above-mentioned further technical solution is that the upper guard plate and the side guard plate are connected by bolts, which facilitates disassembly and replacement of the side guard plate that is subject to a large degree of wear.

[0017] Furthermore, the transmission mechanism includes a first cutter head transmission part, a second cutter head transmission part and a coupling.

[0018] The first cutter disc group is in transmission connection with the first cutter disc group transmission part, and the second cutter disc group is in transmission connection with the second cutter disc group transmission part; the first cutter disc group transmission part and the second cutter disc group transmission part are both fixed to the upper guard plate, and the first cutter disc group transmission part and the second cutter disc group transmission part are connected into a whole through the coupling, and the whole is L-shaped.

[0019] Furthermore, the first cutterhead transmission unit includes a first cutterhead fixing seat, a first bearing seat, a first gear box, a first clutch assembly and a power input shaft.

[0020] The first cutter head assembly fixing seat is fixed on the upper guard plate; the first bearing seat is installed on the side of the first cutter head assembly fixing seat close to the suspension frame assembly, the first gear box is installed on the other side of the first cutter head assembly fixing seat, and the lower part of the first gear box is transmission-connected with the first cutter head assembly; the first clutch assembly is installed between the first bearing seat and the first gear box, and the first clutch assembly is transmission-connected with the first gear box; the power input shaft passes through the first clutch assembly, and one end of the power input shaft is installed on the first bearing seat and transmission-connected with the power output shaft through a coupling, and the other end is transmission-connected with the first gear box;

[0021] The second cutter disc assembly transmission part comprises a second cutter disc assembly fixing seat, a second bearing seat, a second gear box and a second clutch assembly, wherein the second cutter disc assembly fixing seat is fixed to the upper guard plate, the second bearing seat is mounted on the side of the second cutter disc assembly fixing seat close to the first gear box, the second gear box is mounted on the other side of the second cutter disc assembly fixing seat, and the lower part of the second gear box is transmission-connected with the second cutter disc assembly; the second clutch assembly is mounted between the second bearing seat and the second gear box, and the second clutch assembly is transmission-connected with the second gear box;

[0022] One end of the coupling is transmission-connected to the first gear box, and the other end of the coupling is transmission-connected to the second clutch assembly via the second bearing seat.

[0023] Further, the first gearbox includes a first gearbox body, a first spiral bevel gear, a second spiral bevel gear, a third spiral bevel gear, a first output shaft and a second output shaft.

[0024] The first gear case is installed on the first cutter head assembly fixing seat; the first spiral bevel gear is transmission-connected with the power input shaft; the first spiral bevel gear, the second spiral bevel gear and the third spiral bevel gear are all installed inside the first gear case, and the second spiral bevel gear and the third spiral bevel gear are both meshed with the first spiral bevel gear; one end of the first output shaft is transmission-connected with the second spiral bevel gear, and the other end of the first output shaft is transmission-connected with the coupling; one end of the second output shaft is transmission-connected with the third spiral bevel gear, and the other end of the second output shaft is transmission-connected with the first cutter head assembly;

[0025] The second gearbox includes a second gearbox body, a first input shaft, a fourth spiral bevel gear, a fifth spiral bevel gear and a third output shaft.

[0026] The second gear case is installed on the second cutter disc group fixing seat; the first input shaft is transmission connected with one end of the coupling; the fourth spiral bevel gear and the fifth spiral bevel gear are both installed inside the second gear case, and the fourth spiral bevel gear is fixed on the first input shaft, and the fifth spiral bevel gear is meshed with the fourth spiral bevel gear; one end of the third output shaft is transmission connected with the fourth spiral bevel gear, and the other end of the third output shaft is transmission connected with the second cutter disc group.

[0027] The beneficial effect of adopting the above-mentioned further technical solution is that the power output shaft of the tractor is directly connected to the transmission part of the first cutter disc group to drive the first cutter disc group to rotate; then the power is transmitted from the first cutter disc group transmission part to the second cutter disc group transmission part through the coupling to drive the second cutter disc group to rotate. It is controlled by only one power input, which ensures the continuity of the transmission process and reliable and stable transmission.

[0028] Furthermore, the suspension frame assembly includes a first fixing frame, a second fixing frame, a first suspension beam, a second suspension beam, a connecting column, a first fixing member, a second fixing member, a first cable and a second cable.

[0029] The first fixing frame and the second fixing frame are relatively installed on the front end surface of the upper guard plate on one side of the transmission part of the first blade disc group; one end of the first suspension beam is movably connected to the first fixing frame, one end of the second suspension beam is movably connected to the second fixing frame, and the other end of the first suspension beam is connected to the other end of the second suspension beam through the connecting column; the first fixing member and the second fixing member are both arranged on the upper guard plate, and the first fixing member and the second fixing member are distributed on both sides of the transmission part of the first blade disc group; one end of the first cable is fixed on the first fixing member, one end of the second cable is fixed on the second fixing member, and the other end of the first cable and the other end of the second cable are connected as a whole and fixed on the connecting column.

[0030] Furthermore, the first fixing frame includes a first hollow fixing frame, a first connecting plate and a first rotating shaft.

[0031] The first hollow fixing frame is fixed to the side of the upper guard plate close to the tractor; one end of the first suspension beam is fixedly connected to the first connecting plate, and the first connecting plate is movably arranged inside the first hollow fixing frame through the first rotating shaft;

[0032] The second fixing frame includes a second hollow fixing frame, a second connecting plate and a second rotating shaft. The second hollow fixing frame is fixed to the upper guard plate on a side close to the tractor, and a horizontal distance between the second hollow fixing frame and the first hollow fixing frame is greater than a width of the first cutter head assembly fixing seat. One end of the second suspension beam is fixedly connected to the second connecting plate, and the second connecting plate is movably arranged inside the second hollow fixing frame through the second rotating shaft.

[0033] The beneficial effect of adopting the above-mentioned further technical solution is that the frame is reliably connected to the tractor bracket through the suspension frame group, the force is evenly applied, vibration is avoided, and the operation is stable; the suspension frame group is arranged on the front end surface of one side of the transmission part of the first cutter disc group, instead of being fixed in the middle of the frame, so as to balance the different sizes and weights of the first cutter disc group and the second cutter disc group and the influence of different airflows generated during high-speed rotation.

[0034] Further, the support mechanism includes a first frame beam, a second frame beam, a third frame beam, a fourth frame beam, a fifth frame beam, a sixth frame beam, a first support wheel, a first support wheel bracket, a first support wheel bracket articulated shaft, a second support wheel, a second support wheel bracket, and a second support wheel bracket articulated shaft.

[0035] The first frame beam, the second frame beam, the third frame beam, the fourth frame beam, the fifth frame beam and the sixth frame beam are all fixed on the upper guard plate, the first support wheel bracket is arranged at the rear of the upper guard plate close to the transmission part of the first cutter head group, and the second support wheel bracket is arranged on the side guard plate close to the transmission part of the second cutter head group; the diameter of the first support wheel is greater than the diameter of the second support wheel;

[0036] The 3rd frame is connected with the first frame by the hinge parts of the first and second frame members, and the 3rd frame is connected with the first support frame by the hinge parts of the first and second frame members.

[0037] The beneficial effect of adopting the above-mentioned further technical scheme is that the first support wheel is located behind the first cutter disc group, and the second support wheel is located on the side of the second cutter disc group. The function of the second support wheel is to support the second cutter disc group to keep the frame balanced; the first support wheel is behind the first cutter disc group, and not only plays the role of supporting the frame, but also can imitate the uneven ground undulations and shapes, so that the first cutter disc group and the second cutter disc group can adjust the height with the undulations of the ground, so that the cut cotton stalks are inserted at the same height; the diameter of the first support wheel is larger than the diameter of the second support wheel. When the tractor is suspended and towed by the field return machine, the two support wheels are in contact with the ground, which makes the first cutter disc group not horizontal with the ground, and its front end is tilted downward. The angle between the first cutter disc group and the cotton stalk is about 87 degrees, which can reduce the cutting resistance and improve the straw chopping rate.

[0038] Further, the first cutter disc group includes a first cutter disc, three first movable cutter groups and a first fixed cutter, the first cutter disc is mounted on the second output shaft; the three first movable cutter groups are evenly arranged along the circumference of the first cutter disc, each of the first movable cutter groups includes two first movable cutters spaced apart, and the two first movable cutters are parallel to the first cutter disc; the first fixed cutter is horizontally fixed on the inner wall of the side guard plate, and the extending end of the first fixed cutter is located between the two first movable cutters;

[0039] The second cutter disc group includes a second cutter disc, three second movable cutter groups and a second fixed cutter, and the second cutter disc is mounted on the third output shaft; the three second movable cutter groups are evenly arranged along the circumference of the second cutter disc, and each second movable cutter group includes two spaced second movable cutters, and the two second movable cutters are parallel to the second cutter disc; the second fixed cutter is horizontally fixed on the inner wall of the side guard plate, and the extending end of the second fixed cutter is located between the two second movable cutters.

[0040] The beneficial effect of adopting the above further technical solution is that the movable knife and the fixed knife cooperate with each other, the straw is crushed more completely, and the work efficiency is improved.

[0041] Furthermore, the first clutch group includes a first overrunning clutch and a diaphragm clutch, the first overrunning clutch is located on the side close to the first gearbox, and the first overrunning clutch and the diaphragm clutch are connected as a whole by bolts; the second clutch group includes a second overrunning clutch and a dog clutch, the second overrunning clutch is located on the side close to the second gearbox, and the second overrunning clutch and the dog clutch are connected as a whole by bolts.

[0042] The beneficial effect of adopting the above-mentioned further technical solution is that the overrunning clutch is combined with the friction clutch. The overrunning clutch protects the first cutter disc or the second cutter disc from rotating at high speed. If the power output shaft of the tractor suddenly slows down, the first cutter disc or the second cutter disc can be separated from the power output shaft of the tractor to prevent damage to the first gear box or the second gear box; the friction clutch (diaphragm clutch and tooth clutch) plays the role of overload protection of the cutting mechanism and the transmission mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0044] Figure 1The accompanying drawing is a schematic diagram of the overall structure of a straw crushing and returning machine provided by the present invention;

[0045] Figure 2 The accompanying drawing is a schematic diagram of the structure of a straw crushing and returning machine provided by the present invention when viewed from above;

[0046] Figure 3 The accompanying drawing is a schematic diagram of the overall structure of the transmission mechanism provided by the present invention;

[0047] Figure 4 The accompanying drawing is a cross-sectional view of a first gearbox provided by the present invention;

[0048] Figure 5 The accompanying drawing is a cross-sectional view of the second gearbox provided by the present invention;

[0049] Figure 6 The accompanying drawing is a schematic diagram of the overall structure of the support mechanism provided by the present invention;

[0050] Figure 7 The accompanying drawing is a schematic diagram of the main structure of a straw crushing and returning machine provided by the present invention.

[0051] In the figure:

[0052] 1-frame, 2-suspension frame assembly, 3-support mechanism, 4-transmission mechanism, 5-cutting mechanism;

[0053] 51-first cutter disc group, 52-second cutter disc group;

[0054] 11-upper guard plate, 12-side guard plate;

[0055] 41- first cutter head group transmission part, 42- second cutter head group transmission part, 43- coupling;

[0056] 411 - first cutterhead assembly fixing seat, 412 first bearing seat, 413 first gear box, 414 first clutch assembly, 415 power input shaft;

[0057] 421 a second cutter head assembly fixing seat, 422 a second bearing seat, 423 a second gear box, 424 a second clutch assembly;

[0058] 4131 a first gear housing, 4132 a first spiral bevel gear, 4133 a second spiral bevel gear, 4134 a third spiral bevel gear, 4135 a first output shaft, 4136 a second output shaft;

[0059] 4231 second gear housing, 4232 first input shaft, 4233 fourth spiral bevel gear, 4234 fifth spiral bevel gear, 4235 third output shaft;

[0060] 21 first fixing frame, 22 second fixing frame, 23 first suspension beam, 24 second suspension beam, 25 connecting column, 26 first fixing member, 27 second fixing member, 28 first cable, 29 second cable;

[0061] 31 first frame beam, 32 second frame beam, 33 third frame beam, 34 fourth frame beam, 35 fifth frame beam, 36 sixth frame beam, 37 first support wheel, 38 first support wheel bracket, 39 first support wheel bracket articulation shaft, 310 second support wheel, 311 second support wheel bracket, 312 second support wheel bracket articulation shaft;

[0062] 511 a first knife disc, 512 a first moving knife group, 513 a first fixed knife;

[0063] 521 second knife disc, 522 second moving knife group, 523 second fixed knife. DETAILED DESCRIPTION

[0064] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0065] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0066] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0067] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0069] like Figure 1-7 As shown, the embodiment of the present invention discloses a straw crushing and returning machine, which is mounted on a tractor and is characterized in that it includes a frame 1, a suspension frame group 2, a support mechanism 3, a transmission mechanism 4 and a cutting mechanism 5.

[0070] The frame 1 has an open internal space; the suspension frame group 2 is installed on the frame 1, and the frame 1 is connected to the tractor through the suspension frame group 2; the support mechanism 3 is connected to the frame 1, and its support frame 1 is higher than the ground and moves with the tractor; the transmission mechanism 4 is installed on the top of the frame 1, and the transmission mechanism 4 is connected to the power output shaft of the tractor; the cutting mechanism 5 includes a first cutter disc group 51 and a second cutter disc group 52 with a rotation radius smaller than the first cutter disc group 51, the first cutter disc group 51 and the second cutter disc group 52 are respectively arranged on both sides of the internal space, and the first cutter disc group 51 and the second cutter disc group 52 are both connected to the transmission mechanism 4. The frame 1 of the present invention is suspended and towed by a tractor, and the power output shaft of the tractor is connected to the transmission mechanism 4 to drive the cutting mechanism 5 to rotate. During operation, the tractor drags the frame 1 along the cotton stalks while the first cutter disc group 51 and the second cutter disc group 52 rotate at high speed to crush the straw and throw it out of the frame 1. The first cutter disc group 51 and the second cutter disc group 52 have different rotation radii. The first cutter disc group 51 cuts four rows, and the second cutter disc group 52 cuts two rows. The cotton stalks of one film and six rows can be crushed at one time, which is suitable for the planting mode of one film and six rows of machine-picked cotton, thereby improving work efficiency and crushing quality.

[0071] Specifically, the frame 1 includes an upper guard plate 11 and side guard plates 12 distributed circumferentially along the upper guard plate 11 , and the upper guard plate 11 and the side guard plates 12 are connected by bolts.

[0072] Specifically, the transmission mechanism 4 includes a first cutter head transmission part 41, a second cutter head transmission part 42 and a coupling 43.

[0073] The first cutter disc group 51 is connected to the first cutter disc group transmission part 41, and the second cutter disc group 52 is connected to the second cutter disc group transmission part 42; the first cutter disc group transmission part 41 and the second cutter disc group transmission part 42 are both fixed to the upper guard plate 11, and the first cutter disc group transmission part 41 and the second cutter disc group transmission part 42 are connected into a whole through a coupling 43, and the whole is L-shaped.

[0074] Specifically, the first cutter head assembly transmission unit 41 includes a first cutter head assembly fixing seat 411, a first bearing seat 412, a first gear box 413, a first clutch assembly 414 and a power input shaft 415.

[0075] The first cutter disc group fixing seat 411 is fixed on the upper guard plate 11; the first bearing seat 412 is installed on the side of the first cutter disc group fixing seat 411 close to the suspension frame group 2, and the first gear box 413 is installed on the other side of the first cutter disc group fixing seat 411, and the lower part of the first gear box 413 is connected to the first cutter disc group 51 by transmission; the first clutch group 414 is installed between the first bearing seat 412 and the first gear box 413, and the first clutch group 414 is connected to the first gear box 413 by transmission; the power input shaft 415 runs through the first clutch group 414, and one end of the power input shaft 415 is installed on the first bearing seat 412 and is connected to the power output shaft 415 by a coupling, and the other end is connected to the first gear box 413 by transmission;

[0076] The second cutter disc group transmission part 42 includes a second cutter disc group fixing seat 421, a second bearing seat 422, a second gear box 423 and a second clutch group 424. The second cutter disc group fixing seat 421 is fixed on the upper guard plate 11, the second bearing seat 422 is installed on the side of the second cutter disc group fixing seat 421 close to the first gear box 413, and the second gear box 423 is installed on the other side of the second cutter disc group fixing seat 421. The lower part of the second gear box 423 is connected to the second cutter disc group 52 in a transmission manner; the second clutch group 424 is installed between the second bearing seat 422 and the second gear box 423, and the second clutch group 424 is connected to the second gear box 423 in a transmission manner;

[0077] One end of the coupling 43 is transmission-connected to the first gear box 413 , and the other end of the coupling 43 is transmission-connected to the second clutch assembly 424 via the second bearing seat 422 .

[0078] Specifically, the first gear box 413 includes a first gear box body 4131, a first spiral bevel gear 4132, a second spiral bevel gear 4133, a third spiral bevel gear 4134, a first output shaft 4135 and a second output shaft 4136.

[0079] The first gear case 4131 is installed on the first cutter head assembly fixing seat 411; the first spiral bevel gear 4132 is transmission connected with the power input shaft 415; the first spiral bevel gear 4132, the second spiral bevel gear 4133 and the third spiral bevel gear 4134 are all installed inside the first gear case 4131, and the second spiral bevel gear 4133 and the third spiral bevel gear 4134 are all meshed with the first spiral bevel gear 4132; one end of the first output shaft 4135 is transmission connected with the second spiral bevel gear 4132, and the other end of the first output shaft 4135 is transmission connected with the coupling 43; one end of the second output shaft 4136 is transmission connected with the third spiral bevel gear 4134, and the other end of the second output shaft 4136 is transmission connected with the first cutter head assembly 51;

[0080] The second gearbox 423 includes a second gearbox body 4231, a first input shaft 4232, a fourth spiral bevel gear 4233, a fifth spiral bevel gear 4234 and a third output shaft 4235.

[0081] The second gear case 4231 is installed on the second cutter disc group fixed seat 421; the first input shaft 4232 is transmission connected to one end of the coupling 43; the fourth spiral bevel gear 4233 and the fifth spiral bevel gear 4234 are both installed inside the second gear case 4231, and the fourth spiral bevel gear 4233 is fixed on the first input shaft 4232, and the fifth spiral bevel gear 4234 is meshed with the fourth spiral bevel gear 4233; one end of the third output shaft 4235 is transmission connected to the fourth spiral bevel gear 4233, and the other end of the third output shaft 4235 is transmission connected to the second cutter disc group 52.

[0082] Specifically, the suspension frame assembly 2 includes a first fixing frame 21, a second fixing frame 22, a first suspension beam 23, a second suspension beam 24, a connecting column 25, a first fixing member 26, a second fixing member 27, a first cable 28 and a second cable 29.

[0083] The first fixing frame 21 and the second fixing frame 22 are relatively installed on the front end surface of the upper guard plate 11 on one side of the first cutter disc group transmission part 41; one end of the first suspension beam 23 is movably connected to the first fixing frame 21, one end of the second suspension beam 24 is movably connected to the second fixing frame 27, and the other end of the first suspension beam 23 is connected to the other end of the second suspension beam 24 through a connecting column 25; the first fixing member 26 and the second fixing member 27 are both arranged on the upper guard plate 11, and the first fixing member 26 and the second fixing member 27 are distributed on both sides of the first cutter disc group transmission part 41; one end of the first cable 28 is fixed on the first fixing member 26, one end of the second cable 29 is fixed on the second fixing member 27, and the other end of the first cable 28 and the other end of the second cable 29 are connected as a whole and fixed on the connecting column 25.

[0084] Specifically, the first fixing frame 21 includes a first hollow fixing frame, a first connecting plate and a first rotating shaft.

[0085] The first hollow fixed frame is fixed to the side of the upper guard plate 11 close to the tractor; one end of the first suspension beam 23 is fixedly connected to the first connecting plate, and the first connecting plate is movably arranged inside the first hollow fixed frame through the first rotating shaft;

[0086] The second fixed frame 22 includes a second hollow fixed frame, a second connecting plate and a second rotating shaft. The second hollow fixed frame is fixed to the upper guard plate 11 on the side close to the tractor, and the horizontal distance between the second hollow fixed frame and the first hollow fixed frame is greater than the width of the first cutter head group fixing seat 411. One end of the second suspension beam 24 is fixedly connected to the second connecting plate, and the second connecting plate is movably arranged inside the second hollow fixed frame through the second rotating shaft.

[0087] Specifically, the support mechanism 3 includes a first frame beam 31, a second frame beam 32, a third frame beam 33, a fourth frame beam 34, a fifth frame beam 35, a sixth frame beam 36, a first support wheel 37, a first support wheel bracket 38, a first support wheel bracket hinge shaft 39, a second support wheel 310, a second support wheel bracket 311, and a second support wheel bracket hinge shaft 312.

[0088] The first frame beam 31, the second frame beam 32, the third frame beam 33, the fourth frame beam 34, the fifth frame beam 35 and the sixth frame beam 36 are all fixed on the upper guard plate 11, the first support wheel bracket 38 is arranged at the rear of the upper guard plate 11 close to the first cutter head group transmission part 41, and the second support wheel bracket 311 is arranged on the side of the side guard plate 12 close to the second cutter head group transmission part 42; the diameter of the first support wheel 37 is greater than the diameter of the second support wheel 310;

[0089] The first frame beam 31 and the second frame beam 32 are parallelly distributed on both sides of the first cutter head group transmission part 41 along the length direction; one end of the first frame beam 31 is connected to the first hollow fixed frame, the other end of the first frame beam 31 is connected to one end of the third frame beam 33, the other end of the third frame beam 33 extends out of the upper guard plate 11 and is connected to the first support wheel bracket 38 through the first support wheel bracket hinge shaft 39, one end of the second frame beam 32 is connected to the second hollow fixed frame, and the other end of the second frame beam 32 is connected to the sixth frame beam 36; the fourth frame One end of the frame beam 34 is connected to the third frame beam 33, and the other end of the fourth frame beam 34 is connected to the sixth frame beam 36; one end of the fifth frame beam 35 is connected to the second frame beam 32, and the other end of the fifth frame beam 35 extends out of the upper guard plate 11 and is connected to the second support wheel bracket 311 through the second support wheel bracket hinge shaft 312; one end of the sixth frame beam 36 is fixed on the third frame beam 33; the first support wheel 37 is installed on the first support wheel bracket 38, and the second support wheel 310 is installed on the second support wheel bracket 311.

[0090] Specifically, the first cutter disc group 51 includes a first cutter disc 511, three first movable cutter groups 512 and a first fixed cutter 513. The first cutter disc 51 is mounted on the second output shaft 4136. The three first movable cutter groups 512 are evenly arranged along the circumference of the first cutter disc 511. Each first movable cutter group 512 includes two first movable cutters spaced apart from each other, and the two first movable cutters are parallel to the first cutter disc 511. The first fixed cutter 513 is horizontally fixed on the inner wall of the side guard plate 12, and the extending end of the first fixed cutter 513 is located between the two first movable cutters.

[0091] The second cutter disc group 52 includes a second cutter disc 521, three second movable cutter groups 522 and a second fixed cutter 523. The second cutter disc 521 is mounted on the third output shaft 4235. The three second movable cutter groups 522 are evenly arranged along the circumference of the second cutter disc 521. Each second movable cutter group 522 includes two spaced second movable cutters, and the two second movable cutters are parallel to the second cutter disc 521. The second fixed cutter 523 is horizontally fixed on the inner wall of the side guard plate 12, and the extending end of the second fixed cutter 523 is located between the two second movable cutters.

[0092] Specifically, the first clutch group 414 includes a first overrunning clutch and a diaphragm clutch, the first overrunning clutch is located on the side close to the first gear box 413, and the first overrunning clutch and the diaphragm clutch are connected as a whole by bolts; the second clutch group 424 includes a second overrunning clutch and a tooth clutch, the second overrunning clutch is located on the side close to the second gear box 423, and the second overrunning clutch and the tooth clutch are connected as a whole by bolts.

[0093] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0094] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A straw crushing and returning machine, which is mounted on a tractor, characterized in that: It comprises a frame (1), a suspension frame assembly (2), a support mechanism (3), a transmission mechanism (4) and a cutting mechanism (5). The frame (1) has an open internal space; The suspension frame group (2) is mounted on the frame (1), and the frame (1) is connected to the tractor via the suspension frame group (2); The support mechanism (3) is connected to the frame (1), and supports the frame (1) above the ground so as to move with the tractor; The transmission mechanism (4) is mounted on the top of the frame (1), and the transmission mechanism (4) is in transmission connection with the power output shaft of the tractor; The cutting mechanism (5) comprises a first cutter disc group (51) and a second cutter disc group (52) having a smaller rotation radius than the first cutter disc group (51), the first cutter disc group (51) and the second cutter disc group (52) being respectively arranged on both sides of the internal space, and the first cutter disc group (51) and the second cutter disc group (52) being transmission-connected to the transmission mechanism (4); The frame (1) comprises an upper guard plate (11) and side guard plates (12) distributed along the circumference of the upper guard plate (11), and the upper guard plate (11) and the side guard plates (12) are connected by bolts; The transmission mechanism (4) comprises a first cutterhead transmission part (41), a second cutterhead transmission part (42) and a coupling (43). The first cutter disc assembly (51) is in driving connection with the first cutter disc assembly transmission part (41), and the second cutter disc assembly (52) is in driving connection with the second cutter disc assembly transmission part (42); the first cutter disc assembly transmission part (41) and the second cutter disc assembly transmission part (42) are both fixed to the upper guard plate (11), and the first cutter disc assembly transmission part (41) and the second cutter disc assembly transmission part (42) are connected to form an integral body via the coupling (43), and the integral body is L-shaped; The first cutterhead assembly transmission part (41) comprises a first cutterhead assembly fixing seat (411), a first bearing seat (412), a first gear box (413), a first clutch assembly (414) and a power input shaft (415). The first cutter disc assembly fixing seat (411) is fixed on the upper guard plate (11); the first bearing seat (412) is mounted on one side of the first cutter disc assembly fixing seat (411) close to the suspension frame assembly (2); the first gear box (413) is mounted on the other side of the first cutter disc assembly fixing seat (411); the lower part of the first gear box (413) is transmission-connected to the first cutter disc assembly (51); the first clutch assembly (414) is mounted between the first bearing seat (412) and the first gear box (413); the first clutch assembly (414) is transmission-connected to the first gear box (413); the power input shaft (415) passes through the first clutch assembly (414); one end of the power input shaft (415) is mounted on the first bearing seat (412) and is transmission-connected to the power output shaft via a coupling; the other end of the power input shaft (415) is transmission-connected to the first gear box (413); The second cutter disc assembly transmission part (42) comprises a second cutter disc assembly fixing seat (421), a second bearing seat (422), a second gear box (423) and a second clutch assembly (424); the second cutter disc assembly fixing seat (421) is fixed on the upper guard plate (11); the second bearing seat (422) is mounted on a side of the second cutter disc assembly fixing seat (421) close to the first gear box (413); the second gear box (423) is mounted on the other side of the second cutter disc assembly fixing seat (421); the lower part of the second gear box (423) is transmission-connected to the second cutter disc assembly (52); the second clutch assembly (424) is mounted between the second bearing seat (422) and the second gear box (423); and the second clutch assembly (424) is transmission-connected to the second gear box (423); One end of the coupling (43) is transmission-connected to the first gear box (413), and the other end of the coupling (43) is transmission-connected to the second clutch assembly (424) via the second bearing seat (422); The first gear box (413) comprises a first gear box body (4131), a first spiral bevel gear (4132), a second spiral bevel gear (4133), a third spiral bevel gear (4134), a first output shaft (4135) and a second output shaft (4136); the first gear box body (4131) is mounted on the first cutter head assembly fixing seat (411); the first spiral bevel gear (4132) is transmission-connected to the power input shaft (415); the first spiral bevel gear (4132), the second spiral bevel gear (4133) and the third spiral bevel gear (4134) are all The first gear housing (4131) is installed inside the first gear housing (4131), and the second spiral bevel gear (4133) and the third spiral bevel gear (4134) are both meshed with the first spiral bevel gear (4132); one end of the first output shaft (4135) is transmission-connected to the second spiral bevel gear (4133), and the other end of the first output shaft (4135) is transmission-connected to the coupling (43); one end of the second output shaft (4136) is transmission-connected to the third spiral bevel gear (4134), and the other end of the second output shaft (4136) is transmission-connected to the first cutter head assembly (51); The second gearbox (423) comprises a second gearbox body (4231), a first input shaft (4232), a fourth spiral bevel gear (4233), a fifth spiral bevel gear (4234) and a third output shaft (4235). The second gear housing (4231) is mounted on the second cutter disc assembly fixing seat (421); the first input shaft (4232) is transmission-connected to one end of the coupling (43); the fourth spiral bevel gear (4233) and the fifth spiral bevel gear (4234) are both mounted inside the second gear housing (4231), and the fourth spiral bevel gear (4233) is fixed on the first input shaft (4232), and the fifth spiral bevel gear (4234) is meshed with the fourth spiral bevel gear (4233); one end of the third output shaft (4235) is transmission-connected to the fourth spiral bevel gear (4233), and the other end of the third output shaft (4235) is transmission-connected to the second cutter disc assembly (52); The suspension frame assembly (2) comprises a first fixing frame (21), a second fixing frame (22), a first suspension beam (23), a second suspension beam (24), a connecting column (25), a first fixing member (26), a second fixing member (27), a first cable (28) and a second cable (29), The first fixing frame (21) and the second fixing frame (22) are relatively mounted on the front end surface of the upper guard plate (11) located on the side of the first blade assembly transmission part (41); one end of the first suspension beam (23) is movably connected to the first fixing frame (21), one end of the second suspension beam (24) is movably connected to the second fixing frame (22), and the other end of the first suspension beam (23) is connected to the other end of the second suspension beam (24) through the connecting column (25); the first fixing member (26) and the second fixing member (27) are both arranged on the upper guard plate (11), and the first fixing member (26) and the second fixing member (27) are distributed on both sides of the first blade assembly transmission part (41); one end of the first cable (28) is fixed to the first fixing member (26), one end of the second cable (29) is fixed to the second fixing member (27), and the other end of the first cable (28) and the other end of the second cable (29) are connected as a whole and fixed to the connecting column (25); The first cutter disc group (51) comprises a first cutter disc (511), three first movable cutter groups (512) and a first fixed cutter (513); the first cutter disc (511) is mounted on the second output shaft (4136); the three first movable cutter groups (512) are evenly arranged along the circumference of the first cutter disc (511); each first movable cutter group (512) comprises two first movable cutters spaced apart from each other, and the two first movable cutters are parallel to the first cutter disc (511); the first fixed cutter (513) is horizontally fixed to the inner wall of the side guard plate (12), and an extending end of the first fixed cutter (513) is located between the two first movable cutters; The second cutter disc group (52) comprises a second cutter disc (521), three second movable cutter groups (522) and a second fixed cutter (523); the second cutter disc (521) is mounted on the third output shaft (4235); the three second movable cutter groups (522) are evenly arranged along the circumference of the second cutter disc (521); each second movable cutter group (522) comprises two spaced second movable cutters, the two second movable cutters are parallel to the second cutter disc (521); the second fixed cutter (523) is horizontally fixed to the inner wall of the side guard plate (12), and the extending end of the second fixed cutter (523) is located between the two second movable cutters.

2. A straw crushing and returning machine according to claim 1, characterized in that: The first fixing frame (21) comprises a first hollow fixing frame, a first connecting plate and a first rotating shaft. The first hollow fixed frame is fixed to a side of the upper guard plate (11) close to the tractor; one end of the first suspension beam (23) is fixedly connected to the first connecting plate, and the first connecting plate is movably arranged inside the first hollow fixed frame via the first rotating shaft; The second fixing frame (22) comprises a second hollow fixing frame, a second connecting plate and a second rotating shaft; the second hollow fixing frame is fixed to the upper guard plate (11) on a side close to the tractor, and the horizontal distance between the second hollow fixing frame and the first hollow fixing frame is greater than the width of the first blade assembly fixing seat (411); one end of the second suspension beam (24) is fixedly connected to the second connecting plate, and the second connecting plate is movably arranged inside the second hollow fixing frame via the second rotating shaft.

3. A straw crushing and returning machine according to claim 2, characterized in that: The support mechanism (3) comprises a first frame beam (31), a second frame beam (32), a third frame beam (33), a fourth frame beam (34), a fifth frame beam (35), a sixth frame beam (36), a first support wheel (37), a first support wheel bracket (38), a first support wheel bracket articulation shaft (39), a second support wheel (310), a second support wheel bracket (311), and a second support wheel bracket articulation shaft (312). The first frame beam (31), the second frame beam (32), the third frame beam (33), the fourth frame beam (34), the fifth frame beam (35) and the sixth frame beam (36) are all fixed on the upper guard plate (11); the first support wheel bracket (38) is arranged at the rear of the upper guard plate (11) on a side close to the first cutter head assembly transmission part (41); the second support wheel bracket (311) is arranged on a side close to the second cutter head assembly transmission part (42) of the side guard plate (12); the diameter of the first support wheel (37) is larger than the diameter of the second support wheel (310); The first frame beam (31) and the second frame beam (32) are parallelly distributed on both sides of the first cutter head assembly transmission part (41) along the length direction; one end of the first frame beam (31) is connected to the first hollow fixed frame, the other end of the first frame beam (31) is connected to one end of the third frame beam (33), the other end of the third frame beam (33) extends out of the upper guard plate (11) and is connected to the first support wheel bracket (38) through the first support wheel bracket hinge shaft (39), one end of the second frame beam (32) is connected to the second hollow fixed frame, and the other end of the second frame beam (32) is connected to the sixth frame beam (36); the fourth frame beam One end of the fourth frame beam (34) is connected to the third frame beam (33), and the other end of the fourth frame beam (34) is connected to the sixth frame beam (36); one end of the fifth frame beam (35) is connected to the second frame beam (32), and the other end of the fifth frame beam (35) extends out of the upper guard plate (11) and is connected to the second support wheel bracket (311) through the second support wheel bracket hinge shaft (312); one end of the sixth frame beam (36) is fixed to the third frame beam (33); the first support wheel (37) is mounted on the first support wheel bracket (38), and the second support wheel (310) is mounted on the second support wheel bracket (311).

4. The straw crushing and returning machine according to claim 1, characterized in that: The first clutch group (414) comprises a first overrunning clutch and a diaphragm clutch, the first overrunning clutch is located on a side close to the first gearbox (413), and the first overrunning clutch and the diaphragm clutch are connected as a whole through bolts; the second clutch group (424) comprises a second overrunning clutch and a tooth clutch, the second overrunning clutch is located on a side close to the second gearbox (423), and the second overrunning clutch and the tooth clutch are connected as a whole through bolts.

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