A double-shaft corn stalk crushing and returning machine

Abstract

The invention discloses a double-shaft corn stalk pulverizing and returning machine to the field, belonging to the technical field of agricultural machinery. The double-shaft corn stalk pulverizing and returning machine to the field comprises: a frame, on which a first gearbox and a second gearbox connected by a universal joint are arranged; a first pulverizing part, which is arranged inside the frame and is transmission-connected to the first gearbox; a second pulverizing part, which is also arranged inside the frame and is transmission-connected to the second gearbox, and the second pulverizing part is arranged at intervals from the first pulverizing part. The double-shaft corn stalk pulverizing and returning machine pulverizes corn stalks by using the first pulverizing part and the second pulverizing part. After the secondary pulverization, the pulverization effect is better, and the problem of low efficiency and easy occurrence of blade shaft entanglement failure when pulverizing stalks in existing straw returning equipment is solved.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, and more particularly to a double-shaft corn stalk crushing and returning machine to the field. Background Art

[0002] The crushing and returning of corn stalks to the field can return the organic matter and effective nutrients in the stalks to the soil, thereby improving soil fertility. The returning of corn stalks to the field can effectively utilize organic fertilizer resources, increase soil organic matter, improve soil structure, promote soil microbial activity, and enhance soil fertilizer retention and supply performance, which is beneficial to increase soil porosity, increase soil aeration, promote crop root growth, destroy soil compaction, and be beneficial to no-tillage corn sowing and increase crop yields. It can also improve the quality of clothing products, save fertilizer input, reduce production costs, and increase farmers' income. At the same time, it can reduce the pollution of the atmosphere, soil, water quality, and environment caused by incineration and waste, which is of great significance to promoting the development of sustainable agriculture and improving the safety of agricultural products.

[0003] Corn straw crushing and returning machine is a widely used machine in corn straw crushing and returning operation in my country, and it has played a positive role in improving the mechanization level of corn straw crushing and returning in my country. However, due to the problems in the structural design and technical parameter selection of existing models, the straw crushing effect is poor during operation, the length of the straw is different, and it is easy to have serious problems with the blade shaft being entangled with grass. The blade shaft is even turned into a grass roller due to the entanglement of the straw, and it is impossible to continue working. Moreover, the entanglement is extremely tight, and it is very difficult to stop the machine for grass cleaning, which is laborious and time-consuming, labor-intensive, and reduces the operating efficiency of the machine. In addition, most of these machines are single-axis structures with poor straw crushing rates, which affects the quality of corn sowing operations in the following year.

[0004] Therefore, how to provide a double-axis corn stalk crushing and returning machine that can improve the operating efficiency of the machine, ensure the operating quality, reduce and eliminate the occurrence of blade shaft entanglement failures, and reduce the labor intensity of machine operation is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0005] In view of this, the present invention provides a double-shaft corn straw crushing and returning machine to the field to solve the problems of low efficiency and easy occurrence of blade shaft entanglement failure when crushing straw in existing straw returning equipment.

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

[0007] A double-shaft corn stalk crushing and returning machine, characterized by comprising:

[0008] A frame, wherein the frame is provided with a first gearbox and a second gearbox connected by a universal joint;

[0009] A first crushing unit, which is disposed inside the frame and is transmission-connected to the first gearbox;

[0010] The second crushing part is also arranged inside the frame and is transmission-connected to the second gearbox, and the second crushing part is spaced apart from the first crushing part.

[0011] Further, the first crushing part includes a first pulley assembly, a first movable shaft, a first movable knife and a fixed knife. The first pulley assembly is respectively connected to the first gearbox and the first movable shaft in driving connection. Both ends of the first movable shaft are rotatably connected to the frame. The first movable shaft is provided with a plurality of first knife seats, and the plurality of first knife seats are arranged on the first movable shaft at intervals and staggered. The plurality of first knife seats are respectively provided with the first movable knives. The plurality of fixed knives are provided, and the plurality of fixed knives are arranged inside the frame at intervals. When the first movable shaft rotates, the first movable knife is driven to pass through the intervals between the fixed knives.

[0012] Furthermore, the first movable knife includes a swing knife and a swing plate. There are two swing knives, which are symmetrically arranged on both sides of the swing plate. A gap is left between the swing plate and the fixed knife. When the first movable shaft rotates, the blade head of the swing knife passes through the gap of the fixed knife.

[0013] Further, it is characterized in that the second crushing part includes a second pulley combination, a second movable shaft, a second movable knife and a third movable shaft and the third movable knife, the second pulley combination is respectively connected to the second gearbox and the third movable shaft, the second movable shaft is connected to the third movable shaft, and both ends of the second movable shaft and the third movable shaft are rotatably connected to the frame, a plurality of second knife seats are provided on the second movable shaft, the plurality of second knife seats are spirally wound on the second movable shaft at intervals, the plurality of second knife seats are respectively provided with the second movable knives, the third movable shaft is parallel to the second movable shaft, a plurality of third knife seats are provided on the third movable shaft at intervals, the plurality of third knife seats are respectively provided with the third movable knives, and when the second movable shaft rotates, the second movable knife is driven to pass through the intervals between the third movable knives.

[0014] Furthermore, two elongated holes are arranged opposite to each other on both sides of the frame, and both ends of the third movable shaft respectively pass through the elongated holes and are connected to the frame, and the elongated holes are used to adjust the distance between the third movable shaft and the second movable shaft.

[0015] Furthermore, the second movable knife and the third movable knife are both serrated knives.

[0016] Furthermore, it also includes a grass raking part, which includes a raking tooth group and a raking tooth shaft. There are multiple raking tooth groups. The raking tooth shaft is provided with multiple through holes for installing the raking tooth group along the axial direction of the raking tooth shaft. The multiple through holes can adjust the spacing between the multiple raking tooth groups. The raking tooth shaft is parallel to the second moving shaft and both ends are connected to the frame.

[0017] Furthermore, two rectangular grooves are arranged on the frame body in opposite directions, and two ends of the gear shaft respectively pass through the two rectangular grooves and are connected to the frame body.

[0018] Furthermore, the gear group includes a fixing member and a plurality of gears, the plurality of gears are arranged at intervals, and one end of each gear is fixedly connected to the fixing member, and the other end of each gear forms a trough shape, and the fixing member is fixedly connected to the through hole on the gear shaft by a pin or a bolt.

[0019] Furthermore, the teeth are arc-shaped structures.

[0020] It can be seen from the above technical solution that, compared with the prior art, the double-shaft corn stalk crushing and returning machine provided by the present invention has the following beneficial effects:

[0021] 1. The first crushing part and the second crushing part are used to crush the corn stalks. After the secondary crushing, the crushing effect is better;

[0022] 2. The third moving shaft is connected to the second pulley assembly and the second moving shaft is connected to the third moving shaft, so that the second moving shaft and the third moving shaft can have the same direction of rotation, so that the second moving knife and the third moving knife move in opposite directions at the junction, thereby increasing the relative speed of the second moving knife and the third moving knife, which is more conducive to the crushing of corn stalks and the secondary crushing of corn stalks. When designing the third moving shaft, the same crushing effect can be achieved at a lower speed than in the existing design, thereby reducing the power consumption of the unit;

[0023] 3. Adjustment in the long hole on the frame. Both ends of the third movable shaft are installed in the long hole. By adjusting the installation position of the third movable shaft in the long hole, the distance between the second movable shaft and the third movable shaft can be adjusted, the gap between the second movable knife and the third movable knife can be changed, and the crushing length of the corn stalk can be adjusted;

[0024] 4. A rectangular groove is provided on the frame, which can adjust the installation position of the gear shaft in the rectangular groove, thereby adjusting the distance between the gear and the ground;

[0025] 5. By providing a plurality of holes on the tooth shaft, the distance between the tooth groups can be adjusted according to the position of the holes for installing the tooth groups, so that the double-shaft corn stalk crushing and returning machine can be applied to terrains with different ridge distances;

[0026] 6. The first gearbox and the second gearbox are connected respectively through universal joints, so that the rotation directions of the first moving shaft and the second moving shaft are opposite, thereby increasing the relative speed between the first moving shaft and the second moving shaft, which is more effective in crushing corn stalks. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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.

[0028] Figure 1 The accompanying drawing is a schematic diagram of the overall structure of the double-shaft corn stalk crushing and returning machine provided by the present invention;

[0029] Figure 2 The accompanying drawing is a schematic diagram of the unfolded structure of the first moving shaft provided by the present invention;

[0030] Figure 3 The accompanying drawings are schematic structural diagrams of the second moving shaft and the third moving shaft provided by the present invention;

[0031] Figure 4 The accompanying drawing is a schematic structural diagram of the grass raking part provided by the present invention.

[0032] Among them: 1 is a frame; 2 is a first crushing part; 21 is a first pulley assembly; 22 is a first moving shaft; 23 is a first moving knife; 231 is a swinging knife; 232 is a swinging piece; 24 is a fixed knife; 3 is a second crushing part; 31 is a second pulley assembly; 32 is a second moving shaft; 33 is a second moving knife; 34 is a third moving shaft; 35 is a third moving knife; 4 is a universal joint; 5 is a first gearbox; 6 is a second gearbox; 7 is a first knife seat; 8 is a second knife seat; 9 is a third knife seat; 10 is a long hole; 11 is a grass raking part; 111 is a raking tooth group; 1111 is a fixing member; 1112 is a plurality of raking teeth; 112 is a raking tooth shaft; 12 is a through hole; 13 is a rectangular groove. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", "length", "horizontal", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying 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. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0035] See attached Figure 1-4 The embodiment of the present invention discloses a double-shaft corn stalk crushing and returning machine, comprising:

[0036] The frame 1 has a first gearbox 5 and a second gearbox 6 on the top of the frame 1 , and the first gearbox 5 and the second gearbox 6 are connected via a universal joint 4 .

[0037] The first crushing unit 2 is disposed inside the frame 1 and is transmission-connected to the first gearbox 5 .

[0038] Specifically, the first crushing part 2 includes a first pulley assembly 21, a first movable shaft 22, a first movable knife 23 and a fixed knife 24. The first pulley assembly 21 is fixed on the frame 1. The first pulley assembly 21 is respectively connected to the first gearbox 5 and the first movable shaft 22 through a belt. Both ends of the first movable shaft 22 are rotatably connected to the frame 1. A plurality of first knife seats 7 are provided on the first movable shaft 22. The plurality of first knife seats 7 are arranged on the first movable shaft 22 at intervals and staggered, and the arrangement of the plurality of first knife seats 7 in the length direction of the first movable shaft 22 is symmetrical about the center line of the first movable shaft 22. Among them, a plurality of first movable knives 23 are provided, and the plurality of first movable knives 23 are arranged on the first knife seats 7 one by one. By symmetrically arranging the first movable knives 23 on the first movable shaft 22, the first movable shaft 22 is subjected to uniform and stable force during operation, and the power consumption is low. There are multiple fixed knives 24, and the multiple fixed knives 24 are arranged at intervals on the inner side of the frame 1 and in a direction parallel to the first movable shaft 22. The first movable knife 23 includes a swinging knife 231 and a swinging piece 232. There are two swinging knives 231, and the two swinging knives 231 are symmetrically arranged on both sides of the swinging piece 232. The two swinging knives 231 fix the swinging piece 232 between the swinging knives 231, and a gap is left between the swinging piece 232 and the fixed knife 24. A gap is left between the two swinging pieces 232 and the fixed knife 24. When the first movable shaft 22 rotates, the knife head of the swinging knife 231 is driven to pass through the gap of the fixed knife 24.

[0039] The second crushing part 3 is also arranged inside the frame 1 and is transmission-connected to the second gearbox 6 . The second crushing part 3 is spaced apart from the first crushing part 2 .

[0040] Specifically, the second crushing part 3 includes a second pulley assembly 31, a second movable shaft 32, a second movable knife 33, a third movable shaft 34 and a third movable knife 35. The second pulley assembly 31 is fixed on the frame 1, the second pulley assembly 31 is connected to the second gearbox 6 by belt transmission, the second gearbox 6 is connected to the third movable shaft 34 by belt transmission, the second movable shaft 32 is connected to the third movable shaft 34 by belt transmission, the second movable shaft 32 and the third movable shaft 34 are parallel to each other and both ends of the two are rotatably connected to the frame 1, a plurality of second knife seats 8 are provided on the second movable shaft 32, and the plurality of second knife seats 8 are spirally wound on the second movable shaft 32 at intervals, a plurality of second movable knives 33 are provided, and the plurality of second movable knives 33 are arranged one-to-one on the plurality of second knife seats 8, a plurality of third knife seats 9 are provided at intervals on the third movable shaft 34, a plurality of third movable knives 35 are provided, and the plurality of third movable knives 35 are arranged one-to-one on the plurality of third knife seats 9, wherein the second movable knife 33 The second movable knife 33 and the third movable knife 35 are both serrated knives. When the second movable shaft 32 rotates, the second movable knife 33 is driven to pass through the gap of the third movable knife 35.

[0041] Specifically, two elongated holes 10 are arranged on both sides of the frame 1, and both ends of the third movable shaft 34 pass through the elongated holes 10 respectively and are connected to the frame 1. The elongated holes 10 are used to adjust the distance between the third movable shaft 34 and the second movable shaft 32, and then adjust the distance between the second movable knife 33 and the third movable knife 35, so that the length of the crushed straw can be adjusted.

[0042] Specifically, it also includes a grass raking part 11, which is arranged at the feed inlet at the bottom of the frame 1. The grass raking part 11 includes a raking tooth group 111 and a raking tooth shaft 112. The raking tooth shaft 112 is parallel to the second movable shaft 32 and connected to the frame 1 at both ends. There are multiple raking tooth groups 111. The raking tooth shaft 112 is provided with multiple through holes 12 for installing the raking tooth group 111 along the axial direction of the raking tooth shaft 112. By selecting different through holes 12 to install the raking tooth group 111, the distance between adjacent raking tooth groups 111 can be changed, and the raking tooth group 111 can be appropriately adjusted according to the distance between the furrows. The distance between the teeth 111 and the teeth 112 makes the teeth groups 111 all in the furrow, wherein the teeth groups 111 include a fixing member 1111 and a plurality of teeth 1112, the plurality of teeth 1112 are arranged at intervals, the teeth 1112 are an arc-shaped structure, and one end of the plurality of teeth 1112 is fixedly connected to the fixing member 1111, and the other ends of the plurality of teeth 1112 form a trough shape. In the present embodiment, the fixing member 1111 is a steel pipe, and the plurality of teeth 1112 are fixed on the steel pipe by welding. The steel pipe is correspondingly provided with a plurality of through holes, and the steel pipe is fixedly connected to the through hole 12 on the teeth shaft 112 by a pin or a bolt.

[0043] Specifically, two rectangular grooves 13 are relatively arranged on the frame 1, and the two ends of the tooth shaft 112 are respectively passed through the two rectangular grooves 13 and connected to the frame 1. The tooth shaft 112 can be installed at any height of the rectangular groove 13 as required, thereby adjusting the distance between the tooth 1112 and the furrow. The tooth 1112 is inclined, and a plurality of arc-shaped teeth 1112 form a recessed portion. In the present embodiment, the tooth end of the tooth 1112 is inclined in the opposite direction to the direction of travel, and the recessed portion faces the travel direction of the dual-axis corn straw crushing and returning machine. The two ends of the tooth shaft 112 are respectively passed through the two rectangular grooves 13 and are rotatably connected to the frame 1. When the straw in the recessed portion accumulates to a certain extent, the frame 1 When the feed port at the bottom is stuck, the tooth shaft 112 rotates, and the straw accumulated in the recessed portion is exposed from the tooth end of the tooth 1112; in other embodiments, the tooth end of the tooth 1112 is inclined in the direction of travel of the double-axis corn stalk crusher and returner, and the recessed portion is opposite to the direction of travel of the double-axis corn stalk crusher and returner. The two ends of the tooth shaft 112 are respectively passed through two rectangular grooves 13 and are fixedly connected to the frame 1. During operation, the straw is gradually accumulated from the raised portion of the arc-shaped tooth 1112 and enters the frame 1 from the feed port for crushing.

[0044] The working principle of the present invention is as follows: after the double-axis corn stalk crushing and returning machine is connected to the tractor, the tractor power output shaft transmits power to the first gearbox of the machine through the universal joint, the first gearbox transmits power to the second gearbox through the universal joint, the first gearbox and the second gearbox transmit power to the first moving shaft and the third moving shaft respectively through belt transmission, the third moving shaft transmits power to the second moving shaft through the belt to make the first moving shaft, the second moving shaft and the third moving shaft rotate and work, thereby achieving the crushing of corn stalks.

[0045] 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.

[0046] 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 double-shaft corn stalk crushing and returning machine, characterized in that: include: A frame (1), wherein the frame (1) is provided with a first gearbox (5) and a second gearbox (6) connected via a universal joint (4); A first crushing unit (2), the first crushing unit (2) being arranged inside the frame (1) and being transmission-connected to the first gearbox (5); a second crushing part (3), the second crushing part (3) is also arranged inside the frame (1) and is transmission-connected to the second gearbox (6), the second crushing part (3) being arranged at a distance from the first crushing part (2); The second crushing part (3) comprises a second pulley assembly (31), a second movable shaft (32), a second movable knife (33), a third movable shaft (34) and a third movable knife (35); the second pulley assembly (31) is respectively connected to the second gearbox (6) and the third movable shaft (34); the second movable shaft (32) is connected to the third movable shaft (34); both ends of the second movable shaft (32) and the third movable shaft (34) are rotatably connected to the frame (1); a plurality of third movable knives (35) are provided on the second movable shaft (32); a second knife seat (8), a plurality of the second knife seats (8) are spirally wound on the second movable shaft (32) at intervals, the plurality of the second knife seats (8) are respectively provided with the second movable knives (33), the third movable shaft (34) is parallel to the second movable shaft (32), a plurality of third knife seats (9) are arranged at intervals on the third movable shaft (34), the plurality of the third knife seats (9) are respectively provided with the third movable knives (35), and when the second movable shaft (32) rotates, the second movable knives (33) are driven to pass through the intervals between the third movable knives (35); Two elongated holes (10) are arranged opposite to each other on two sides of the frame body (1); two ends of the third movable shaft (34) respectively pass through the elongated holes (10) and are connected to the frame body (1); the elongated holes (10) are used to adjust the distance between the third movable shaft (34) and the second movable shaft (32); It also comprises a grass-raking section (11), the grass-raking section (11) comprising a grass-raking tooth group (111) and a grass-raking tooth shaft (112), a plurality of the grass-raking tooth groups (111) being provided, a plurality of through holes (12) for mounting the grass-raking tooth groups (111) being provided on the grass-raking tooth shaft (112) along the axial direction of the grass-raking tooth shaft (112), the plurality of through holes (12) being capable of adjusting the spacing between the plurality of grass-raking tooth groups (111), the grass-raking tooth shaft (112) being parallel to the second movable shaft (32) and having both ends connected to the frame (1); Two rectangular grooves (13) are arranged opposite to each other on the frame body (1), and two ends of the gear shaft (112) respectively penetrate through the two rectangular grooves (13) to be connected to the frame body (1); The second movable knife (33) and the third movable knife (35) are both serrated knives.

2. A double-shaft corn stalk crushing and returning machine according to claim 1, characterized in that: The first crushing part (2) comprises a first pulley assembly (21), a first movable shaft (22), a first movable knife (23) and a fixed knife (24); the first pulley assembly (21) is respectively connected to the first gearbox (5) and the first movable shaft (22) in a transmission manner; both ends of the first movable shaft (22) are rotatably connected to the frame (1); a plurality of first knife seats (7) are provided on the first movable shaft (22); the plurality of first knife seats (7) are arranged on the first movable shaft (22) at intervals and staggered; the plurality of first knife seats (7) are respectively provided with the first movable knives (23); a plurality of fixed knives (24) are provided; the plurality of fixed knives (24) are arranged at intervals on the inner side of the frame (1); when the first movable shaft (22) rotates, the first movable knives (23) are driven to pass through the intervals between the fixed knives (24).

3. A double-shaft corn stalk crushing and returning machine according to claim 2, characterized in that: The first movable knife (23) comprises a swing knife (231) and a swing plate (232). Two swing knives (231) are provided. The two swing knives (231) are symmetrically arranged on both sides of the swing plate (232). A gap is left between the swing plate (232) and the fixed knife (24). When the first movable shaft (22) rotates, the knife head of the swing knife (231) passes through the gap of the fixed knife (24).

4. The double-shaft corn stalk crushing and returning machine according to claim 1, characterized in that: The tooth assembly (111) comprises a fixing member (1111) and a plurality of teeth (1112); the plurality of teeth (1112) are arranged at intervals, one end of each of the teeth is fixedly connected to the fixing member (1111), and the other end of each of the teeth forms a trough shape; the fixing member (1111) is fixedly connected to the through hole (12) on the tooth shaft (112) via a pin or a bolt.

5. A double-shaft corn stalk crushing and returning machine according to claim 4, characterized in that: The teeth (1112) are arc-shaped structures.

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