Straw burying and soil preparation structure for paddy field

Abstract

The invention discloses a paddy field straw burying and soil preparation structure, and relates to the technical field of agricultural machinery, the paddy field straw burying and soil preparation structure comprises a body, the body comprises a support frame and a cutting and burying mechanism; the supporting frame is used for being connected to traction equipment. The cutting and burying mechanism comprises a roller shaft and a spiral cutting piece, the roller shaft is rotationally connected to the supporting frame, the spiral cutting piece is spirally connected to the outside of the roller shaft in the axial direction of the roller shaft, a plurality of transverse pressing plates are fixedly distributed in a spiral gap of the spiral cutting piece in the spiral direction, and a cavity is defined by every two adjacent transverse pressing plates in the spiral direction, the spiral cutting piece and the roller shaft; the roller shaft and the spiral cutting piece can synchronously rotate relative to the supporting frame so as to cut the straw and press the straw into soil. According to the paddy field straw burying and soil preparation structure, the straw cutting and burying effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, in particular to a paddy field straw burying and land preparation structure. Background Art

[0002] In modern agricultural production, returning straw to the fields, as an effective way to recycle resources, can not only significantly reduce the pollution of agricultural waste to the environment, but also significantly improve soil fertility and crop yields. For rice fields, straw returning technology is particularly important. The rice production process produces a large amount of straw. How to deal with this straw efficiently and scientifically is a key issue related to the sustainability of agricultural production and the protection of the ecological environment. For a long time, due to the emphasis on land use and the neglect of land conservation, rice fields in black soil areas have become "thin", "thin", and "hard". Returning straw to the fields is one of the important measures to solve these problems.

[0003] When existing paddy field rotary tillers are used to bury straw, the straw burying mechanism is driven by the tractor output shaft at a high speed. During operation, the straw is easily entangled on the roller shaft, affecting the operating effect and efficiency of the rotary tiller. In addition, the power-driven rotary tillage device is prone to excessive soil pulping during operation, causing rice seedling stunting, which in turn affects the normal growth of rice. Summary of the Invention

[0004] The purpose of the present invention is to provide a paddy field straw burying and land preparation structure to solve the problems existing in the above-mentioned prior art and improve the straw cutting and burying effect.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a paddy field straw burying and land preparation structure, comprising a main body, wherein the main body comprises a support frame and a cutting and burying mechanism; the support frame is used to be connected to a traction device; the cutting and burying mechanism comprises a roller shaft and a spiral slice, the roller shaft is rotatably connected to the support frame, the spiral slice is spirally connected to the outside of the roller shaft along the axial direction of the roller shaft, and a plurality of transverse pressure plates are fixedly distributed along the spiral direction in the spiral gap of the spiral slice, and two adjacent transverse pressure plates along the spiral direction form a cavity with the spiral slice and the roller shaft; the roller shaft and the spiral slice can rotate synchronously relative to the support frame to cut the straw and press it into the soil.

[0007] Preferably, along the axial direction parallel to the roller axis, at least a plurality of the transverse pressure plates in adjacent spiral gaps are all in different planes.

[0008] Preferably, along the axial direction parallel to the roller axis, the plurality of transverse pressure plates in the spiral gap are all located in different planes.

[0009] Preferably, the main body further comprises an elastic member, the upper end of the support frame is used for rotationally connecting to the traction device, and the elastic member is connected to the support frame and the traction device; the elastic force of the elastic member can press the spiral slices into the soil.

[0010] Preferably, the elastic member is configured as a spring rod, and both ends of the spring rod are rotatably connected to the support frame and the traction device.

[0011] Preferably, the support frame is arranged at an angle, and the cutting and embedding mechanism is connected to the rear end of the support frame along the walking direction.

[0012] Preferably, each of the transverse pressure plates is arranged to be tilted in the spiral gap, and the tilting direction of the transverse pressure plate is opposite to its own rotation direction.

[0013] Preferably, baffles are provided at both axial ends of the spiral slice, and the baffles are fixedly sleeved outside the roller shaft.

[0014] Preferably, the number of the bodies is set to two, and the two bodies are used to be arranged side by side along a width direction perpendicular to the walking direction, and the two bodies are used to be connected to a traction device.

[0015] Preferably, the two spiral slices between the two bodies have opposite rotation directions, and the two spiral slices can rotate to cut the straw and press it into the soil laterally toward the inside.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The paddy field straw burying and land preparation structure provided by the present invention has a cutting and burying mechanism that can be towed and moved by a traction device. Since the roller shaft of the cutting and burying mechanism is rotatably connected to the support frame and the roller shaft is provided with a spiral slice, it can be subjected to the resistance of mud and water and the traction force of the traction device. The two combined forces enable the spiral slice and the roller shaft to roll, cut the straw and press it into the soil, so there is no need to set up an additional driving part; in addition, two adjacent horizontal pressure plates along the spiral direction form a cavity with the spiral slice and the roller shaft, and the cavity acts as a closed space during operation, which can prevent the straw and mud and water from adhering to the roller shaft, causing the straw to entangle with the shaft and affect the rotation, thereby improving the straw cutting and burying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1This is a structural schematic diagram of a main body of the paddy field straw burying and land preparation structure provided in Example 1 of the present invention.

[0020] In the figure: 1-support frame; 11-crossbeam; 12-support arm; 2-cutting mechanism; 21-roller; 22-spiral slice; 23-cross pressure plate; 24-baffle. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0022] The purpose of the present invention is to provide a paddy field straw burying and land preparation structure to solve the problems existing in the above-mentioned prior art and improve the straw cutting and burying effect.

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Example 1

[0025] This embodiment provides a paddy field straw burying and land preparation structure, see Figure 1 , including a main body, the main body includes a support frame 1 and a cutting and burying mechanism 2; the support frame 1 is used to be connected to the traction equipment; the cutting and burying mechanism 2 includes a roller 21 and a spiral slice 22, the roller 21 is rotatably connected to the support frame 1, the spiral slice 22 is spirally connected to the outside of the roller 21 along the axial direction of the roller 21, and a plurality of transverse pressure plates 23 are fixedly distributed along the spiral direction in the spiral gap of the spiral slice 22, and two adjacent transverse pressure plates 23 along the spiral direction form a cavity with the spiral slice 22 and the roller 21; the roller 21 and the spiral slice 22 can rotate synchronously relative to the support frame 1 to cut the straw and press it into the soil.

[0026] The cutting and burying mechanism 2 can be towed and moved by a traction device. Since the roller 21 of the cutting and burying mechanism 2 is rotatably connected to the support frame 1, and the roller 21 is provided with a spiral slice 22, it can be subjected to the resistance of mud and water and the traction force of the traction device. The combined force of the two enables the spiral slice 22 and the roller 21 to roll, cut the straw and press it into the soil, so there is no need to set up additional driving parts; in addition, the two adjacent horizontal pressure plates 23 along the spiral direction form a cavity with the spiral slice 22 and the roller 21, and the horizontal pressure plates 23 can be welded to the spiral slice 22 or the roller 21 for fixation. The cavity acts as a closed space during operation, which can avoid the straw and mud and water sticking to the roller 21, causing the straw to be entangled with the axis and affecting the rotation, thereby improving the straw cutting and burying effect.

[0027] The traction device can be set as an agricultural tractor, which is connected to the support frame 1 of the paddy field straw burying and land preparation structure through a connecting frame for traction.

[0028] Among them, the support frame 1 is welded by a crossbeam 11 and support arms 12 on both sides. The crossbeam 11 is made of 40mm×40mm square tube, and the support arm 12 is cut from 8mm thick steel plate; the length of the support arm 12 is set to 1.4 times the height of the connecting frame of the traction equipment from the ground. This height can keep the spiral slice 22 deep into the soil, and when the operating depth of the traction equipment is different due to uneven soil hardness, the straw cutting depth can still be guaranteed.

[0029] The roller shaft 21 is formed by welding a thick-walled steel pipe with shaft heads at both ends, and the shaft heads are rotatably connected to the support frame 1 through bearings.

[0030] In an optional solution of this embodiment, it is more preferred that along the axial direction parallel to the roller shaft 21, at least a plurality of transverse pressure plates 23 in adjacent spiral gaps are all in different planes.

[0031] Among them, along the axial direction parallel to the roller shaft 21, at least multiple transverse pressure plates 23 in adjacent spiral gaps are in different planes, in order to reduce the number of transverse pressure plates 23 in contact with the ground at the same time, reduce the contact area with the ground, and increase the efficiency of burial.

[0032] In an optional solution of this embodiment, it is more preferred that along the axial direction parallel to the roller shaft 21, the multiple transverse pressure plates 23 in the spiral gap are all in different planes.

[0033] Among them, by controlling the radial angle between adjacent transverse pressure plates 23 along the spiral direction, the number of transverse pressure plates 23 in contact with the ground at the same time is only one. At this time, the contact area with the ground can be minimized to the greatest extent and the efficiency of burial into the soil can be increased. Specifically, the ratio of the outer diameter to the pitch of the spiral slice 220 is 3:1, and the radial angle between adjacent transverse pressure plates 23 along the spiral direction can be 100°.

[0034] In the optional scheme of this embodiment, it is more preferred that the main body also includes an elastic member (not shown in the figure), the upper end of the support frame 1 is used to be rotatably connected to the traction device, and the elastic member is connected to the support frame 1 and the traction device; the elastic force of the elastic member can press the spiral slice 22 into the soil.

[0035] Among them, the upper end of each support frame 1 is installed in the lower middle part of the connecting frame of the traction equipment through a hinged shaft, and the lower end is rotatably connected to the corresponding end of the roller shaft 21 through a bearing. Combined with the elastic force of the elastic member, the roller shaft 21 and the spiral slice 22 can float adaptively to the terrain and can be pressed against the ground to improve the cutting and burying effect.

[0036] In an optional solution of this embodiment, more preferably, the elastic member is configured as a spring rod, and both ends of the spring rod are rotatably connected to the support frame 1 and the traction device.

[0037] Among them, the elastic member can be set as a spring rod, the lower end of which is installed on the crossbeam 11 of the support frame 1 and is rotatably connected by a pin shaft, and the upper end is connected to the connecting frame of the traction equipment and is rotatably connected by a pin shaft; the spring rod is kept in a compressed state, and the pressure of the spring rod acts on the support frame 1 to press the spiral slice 22 into the mud and water and maintain a certain extrusion force, so that the rice straw is pressed into the soil and maintained at a certain depth into the soil, thereby achieving the purpose of cutting and burying the rice straw.

[0038] In the optional solution of this embodiment, it is more preferred that the support frame 1 is arranged at an angle, and the cutting and embedding mechanism 2 is connected to the rear end of the support frame 1 along the walking direction.

[0039] The support arm 12 of the support frame 1 is installed at an angle of 45° to the forward direction, so that the paddy field straw burying and land preparation structure is in a dragging state and can be towed under the traction of the traction equipment.

[0040] In an optional solution of this embodiment, it is more preferred that each transverse pressure plate 23 is arranged obliquely in the spiral gap, and the inclination direction of the transverse pressure plate 23 is opposite to its own rotation direction.

[0041] Among them, each transverse pressure plate 23 can be set at an angle and tilted in the direction opposite to the direction of rotation. For example, if the rotation direction is forward, the transverse pressure plate 23 tilts backward, so that the straw and soil can flow back to the rice field along the transverse pressure plate 23 during the rotation of the roller shaft 21, avoiding the transverse pressure plate 23 from picking up the straw and soil and carrying them away.

[0042] In an optional solution of this embodiment, more preferably, baffles 24 are provided at both axial ends of the spiral slice 22 , and the baffles 24 are fixedly sleeved outside the roller shaft 21 .

[0043] The baffle 24 is provided to shield both sides of the spiral slice 22 and reduce the diffusion of soil to both sides.

[0044] In the optional solution of this embodiment, it is more preferred that the number of the main bodies is set to two, and the two main bodies are used to be arranged side by side along the width direction perpendicular to the walking direction, and both groups of main bodies are used to be connected to the traction equipment.

[0045] Among them, by providing two sets of cutting and burying mechanisms 2 arranged side by side, the cutting and burying efficiency can be improved.

[0046] In an optional solution of this embodiment, it is more preferred that the two spiral slices 22 between the two bodies have opposite rotation directions, and the two spiral slices 22 can rotate to cut the straw and press it into the soil laterally toward the inside.

[0047] Among them, the spiral slices 22 of the two groups of cutting and burying mechanisms 2 adopt left and right rotation directions respectively, and are horizontally symmetrical along the center line of the forward direction. The left side of the forward direction adopts a right-handed structure, and the right side of the forward direction adopts a left-handed spiral. With this arrangement, the soil can be pushed to the middle during the operation, avoiding pushing the soil to the outside of the operation area and affecting the operation effect; the symmetrical arrangement can also enable the two groups of cutting and burying mechanisms 2 to rotate independently during turning operations. During turning operations, the turning radius of the left and right sides of the towing tractor is different, resulting in different rotation speeds of the two groups of cutting and burying mechanisms 2. The independent rotation of the two groups of rollers 21 can reduce the bending deformation of the rollers 21 caused by different rotation speeds, and avoid damage to the rollers 21; the towing operation method is adopted, which avoids mud splashing caused by the rotation of the drive mechanism shaft and can fully mix the rice straw with the soil.

[0048] When in use, the paddy field straw burying and land preparation structure provided by this embodiment is installed in the middle of the frame of the traction connecting frame, installed downward, and the support arm 12 of the support frame 1 is installed at an angle of 45° to the forward direction of the equipment, so that it is in a dragging state; two groups of cutting and burying mechanisms 2 are symmetrically installed along the forward direction, and are respectively connected to a set of support frames 1; the lower end of the elastic member is installed in the middle position of the crossbeam 11 of the support frame 1, and the lower end of the elastic member is vertically and rotatably connected to the crossbeam 11 of the support frame 1 through a pin shaft, and the upper end of the elastic member is vertically and rotatably connected to the connecting frame through a pin shaft; during operation, a tractor with more than 904 horsepower is used for traction, and the bottom of the two groups of cutting and burying mechanisms 2 are subjected to the resistance of mud and water and the traction force of the support frame tractor, and the two combined forces enable the cutting and burying mechanisms 2 to roll.

[0049] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A paddy field straw burying and land preparation structure, characterized by: The invention comprises a main body, wherein the main body comprises a support frame (1) and a cutting and burying mechanism (2); the support frame (1) is used to be connected to a traction device; the cutting and burying mechanism (2) comprises a roller shaft (21) and a spiral slice (22); the roller shaft (21) is rotatably connected to the support frame (1); the spiral slice (22) is spirally connected to the outside of the roller shaft (21) along the axial direction of the roller shaft (21); a plurality of transverse pressure plates (23) are fixedly distributed along the spiral direction in the spiral gap of the spiral slice (22); two transverse pressure plates (23) adjacent to each other along the spiral direction form a cavity with the spiral slice (22) and the roller shaft (21); the roller shaft (21) and the spiral slice (22) can rotate synchronously relative to the support frame (1) to cut the straw and press it into the soil.

2. The paddy field straw burying and land preparation structure according to claim 1, characterized in that: Along the axial direction parallel to the roller shaft (21), at least a plurality of the transverse pressure plates (23) in adjacent spiral gaps are located in different planes.

3. The paddy field straw burying and land preparation structure according to claim 2, characterized in that: Along the axial direction parallel to the roller shaft (21), the plurality of transverse pressure plates (23) in the spiral gap are all located in different planes.

4. The paddy field straw burying and land preparation structure according to claim 1, characterized in that: The main body also includes an elastic member, the upper end of the support frame (1) is used for rotationally connecting to the traction device, and the elastic member is connected to the support frame (1) and the traction device; the elastic force of the elastic member can press the spiral slice (22) into the soil.

5. The paddy field straw burying and land preparation structure according to claim 4, characterized in that: The elastic member is configured as a spring rod, and both ends of the spring rod are rotatably connected to the support frame (1) and the traction device.

6. The paddy field straw burying and land preparation structure according to claim 4, characterized in that: The support frame (1) is arranged at an angle, and the cutting and embedding mechanism (2) is connected to the rear end of the support frame (1) along the walking direction.

7. The paddy field straw burying and land preparation structure according to claim 1, characterized in that: Each of the transverse pressure plates (23) is arranged tilted in the spiral gap, and the tilting direction of the transverse pressure plate (23) is opposite to its own rotation direction.

8. The paddy field straw burying and land preparation structure according to claim 1, characterized in that: Baffles (24) are provided at both axial ends of the spiral slice (22), and the baffles (24) are fixedly sleeved outside the roller shaft (21).

9. The paddy field straw burying and land preparation structure according to any one of claims 1 to 8, characterized in that: The number of the main bodies is set to two, and the two main bodies are used to be arranged side by side along a width direction perpendicular to the walking direction, and the two main bodies are used to be connected to the traction equipment.

10. The paddy field straw burying and land preparation structure according to claim 9, characterized in that: The two spiral slices (22) between the two bodies have opposite rotation directions, and the two spiral slices (22) can be rotated to cut the straw and press it into the soil laterally toward the inside.

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