Rotary tillage soil breaking cutter structure for straw smashing and returning to field

Abstract

The utility model relates to a rotary tillage soil breaking cutter structure for straw smashing and returning, which belongs to the technical field of agricultural mechanical equipment and comprises a transmission main shaft, a cutter head is welded on the outer surface of the transmission main shaft, and a replacement structure is arranged on the outer surface of the cutter head. The replacement structure comprises a connecting base. According to the rotary tillage soil breaking cutter structure for straw smashing and returning to the field, when the transmission main shaft drives the cutter head to rotate, soil can be broken through the soil breaking cutter, and straw is cut off through the straw cutter; when the straw cutter needs to be replaced after being damaged, the straw cutter is loosened by screwing a second bolt, then a limiting column connected with a fixing plate is separated from the interior of a connecting block, then the straw cutter and the connecting block are detached together, and then the straw cutter and the connecting block are replaced; and the soil breaking cutter is located on the outer surface of the cutter head in an inserted connection mode during installation, then the two baffles limit the two sides of the soil breaking cutter, the first bolt is screwed for fixing, the situation of swinging in the using process is prevented, and the using safety and stability are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural machinery equipment technical field, concretely is a straw smashing and returning to field rotary tillage soil breaking knife structure. BACKGROUND

[0002] Rotary tiller has the effect of breaking plough bottom layer, restoring soil tillage structure, improving soil water storage and soil conservation capacity, eliminating part weeds, reducing disease and insect pests, leveling ground surface and improving agricultural mechanization operation standard etc. Rotary tiller is the tillage machine that is matched with tractor to complete ploughing and harrowing operation. Because it has the characteristics of strong soil breaking capacity, flat ground surface after ploughing etc., it has been widely applied. At the same time, it can cut and bury the root stubble below the ground surface, facilitates seeding machine operation, and provides good seedbed for later seeding. The design and manufacture of straw smashing and returning to field rotary tillage soil breaking knife need to meet the requirements of agricultural mechanization, and also need to consider the needs of ecological agriculture and environmental protection to promote the sustainable development of agriculture.

[0003] According to Chinese patent CN213214273U, a straw smashing and returning to field rotary tillage soil breaking knife, comprising: a cutter head, a welding ring, a blade connecting seat, a rotary tillage blade, and a straw cutter, the cutter head is circular, an installation through hole is formed in the center of the cutter head, rotary tillage knife installation notches and straw cutter installation notches are uniformly formed on the side surface of the cutter head, the rotary tillage knife installation notches and the straw cutter installation notches are arranged alternately, the welding ring is fixedly connected to the installation through hole in the center of the cutter head, the blade connecting seat is fixedly connected to the rotary tillage knife installation notch of the cutter head, the rotary tillage blade is fixedly connected to the blade connecting seat, and the straw cutter is fixedly connected to the straw cutter installation notch of the cutter head. The combined cutter is adopted, the rotary tillage blade and the straw cutter cooperate with each other during work, the soil clumps can be broken into smaller pieces, the splicing type installation structure can be quickly installed and disassembled, is very convenient to use, and the replacement of spare parts is also convenient when a fault occurs.

[0004] The rotary tillage knife in the above device is connected in a splicing manner, which can facilitate disassembly and replacement, but the straw cutter is fixedly connected, which is not easy to disassemble and replace when the cutting edge is rolled, reduces the practicality of the device, greatly reduces the convenience, and affects the efficiency of soil breaking work, so a straw smashing and returning to field rotary tillage soil breaking knife structure is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of straw pulverization still field rotary tillage soil-breaking knife structure, with the mode of detachable connection is used, it is convenient to replace maintenance for straw cutter, and the protection of baffle is used on the left and right sides of soil-breaking knife, swing condition is avoided as far as possible, and the use effect is better etc.Advantages, solve the rotary tillage knife and be connected using splicing mode, although it can play the purpose of convenient disassembly and replacement, but straw cutter is connected using fixed mode, when the edge of blade appears curl, it is not easy to disassemble and replace, so that the practicability of device reduces, and the convenience is greatly reduced, the efficiency of soil-breaking work is affected.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of straw pulverization still field rotary tillage soil-breaking knife structure, including transmission main shaft, the outer surface of the transmission main shaft is welded with cutter head, the outer surface of the cutter head is provided with replacement structure;

[0007] Replacement structure includes connecting seat, the connecting seat is fixedly connected on the outer surface of cutter head, the inside of the connecting seat is detachably connected with connecting block, the top of the connecting block is fixedly connected with straw cutter, the outer surface of the connecting seat is detachably connected with fixed plate, the inner surface of the fixed plate is fixedly connected with limit post, the inside of the fixed plate is threadedly connected with second bolt.

[0008] Further, the outer surface of the cutter head is detachably connected with soil-breaking knife, the inside of the soil-breaking knife is threadedly connected with first bolt, and the soil-breaking knife is detachably connected with the cutter head by the first bolt.

[0009] Further, the outer surface of the cutter head is detachably connected with soil-breaking knife, the inside of the soil-breaking knife is threadedly connected with first bolt, and the soil-breaking knife is detachably connected with the cutter head by the first bolt.

[0010] Further, the outer surface of the cutter head is fixedly connected with six baffle, and six baffle are symmetrically distributed on the outer surface of the cutter head as a group of every two.

[0011] Further, the outer surface of the cutter head is fixedly connected with six baffle, and six baffle are symmetrically distributed on the outer surface of the cutter head as a group of every two.

[0012] Further, the inside of the connecting block is provided with insertion slot, the limit post is limitally clamped with the connecting block by insertion slot, and the shape of the limit post is square block.

[0013] Further, the shape of the fixed plate is L-shaped plate, the outer surface of the connecting seat is provided with trapezoidal block, and the fixed plate is detachably connected with the connecting seat by the second bolt.

[0014] Compared with prior art, the technical scheme of the present application has the following beneficial effects:

[0015] 1、The straw crushing and returning to the field rotary tillage soil breaking knife structure, when the transmission main shaft drives the cutter head to rotate, the soil breaking knife can break the soil, and the straw cutter cuts off the straw; when the straw cutter needs to be replaced after being damaged, the second bolt is twisted to loosen it, then the limiting column connected with the fixed plate is disconnected from the inside of the connecting block, and then the straw cutter is disassembled together with the connecting block, then it is replaced; and the soil breaking knife is inserted into the outer surface of the cutter head during installation, then the two baffles limit it on both sides, and the first bolt is twisted to fix it, preventing it from swinging during use, improving the safety and stability of use.

[0016] 2、The straw crushing and returning to the field rotary tillage soil breaking knife structure, because the bottom of the connecting seat is provided with a trapezoidal block, the soil produced during soil breaking will not directly contact with the fixed plate, reducing the resistance of the soil to the fixed plate, thereby reducing the breaking condition and improving the service life. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a main sectional view of the structure of the utility model;

[0018] Fig. 2 It is a local plan view of the structure of the utility model;

[0019] Fig. 3 It is a perspective view of the structure of the utility model.

[0020] In the figure: 1, transmission main shaft; 2, cutter head; 3, soil breaking knife; 4, first bolt; 5, baffle; 6, connecting seat; 7, connecting groove; 8, connecting block; 9, straw cutter; 10, fixed plate; 11, limiting column; 12, second bolt. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0022] Please refer to Figs. 1-3The structure of the soil-breaking knife of the straw smashing and returning to field rotary tiller in the embodiment comprises a transmission main shaft 1, a cutter head 2 welded to the outer surface of the transmission main shaft 1, a soil-breaking knife 3 detachably connected to the outer surface of the cutter head 2, a first bolt 4 threadedly connected to the inside of the soil-breaking knife 3, and the soil-breaking knife 3 detachably connected to the cutter head 2 through the first bolt 4, six baffle plates 5 fixedly connected to the outer surface of the cutter head 2, and the six baffle plates 5 symmetrically distributed on the outer surface of the cutter head 2 in groups of two.

[0023] The outer surface of the cutter head 2 is provided with a replacement structure; the replacement structure comprises a connecting seat 6 fixedly connected to the outer surface of the cutter head 2, a connecting block 8 detachably connected to the inside of the connecting seat 6, and a connecting groove 7 formed in the inside of the connecting seat 6, and the connecting block 8 is located in the inside of the connecting seat 6 through the connecting groove 7.

[0024] The top of the connecting block 8 is fixedly connected with a straw cutter 9, the outer surface of the connecting seat 6 is detachably connected with a fixed plate 10, the inner surface of the fixed plate 10 is fixedly connected with a limiting column 11, the inside of the connecting block 8 is provided with a plug-in groove, the limiting column 11 is limitingly connected with the connecting block 8 through the plug-in groove, and the shape of the limiting column 11 is a square block.

[0025] The inside of the fixed plate 10 is threadedly connected with a second bolt 12, the shape of the fixed plate 10 is an L-shaped plate, the outer surface of the connecting seat 6 is provided with a trapezoidal block, and the fixed plate 10 is detachably connected with the connecting seat 6 through the second bolt 12.

[0026] In the embodiment, the bottom of the connecting seat 6 is provided with the trapezoidal block, so that the soil generated during soil breaking does not directly contact the fixed plate 10, the resistance of the soil to the fixed plate 10 is reduced, the breaking condition is further reduced, and the service life is improved.

[0027] In the embodiment, the limiting column 11 is connected with the connecting block 8, and then the fixed plate 10 is matched with the use of the second bolt 12, so that the structure is more reliable during use, the loosening and falling off condition is reduced, and the working efficiency is improved.

[0028] In the embodiment, during the rotation of the rotary tiller soil-breaking knife, the blade cuts off the straw on the ground and stirs it into the soil, realizing the smashing of the straw; the rotation of the blade simultaneously turns over and loosens and breaks the soil, which is helpful for subsequent seeding operation; the cut straw is buried in the soil and can be used as organic matter to improve the soil structure and increase the soil fertility.

[0029] The working principle of the above embodiment is as follows:

[0030] The broken soil cutter 3 can break the soil when the transmission main shaft 1 drives the cutter head 2 to rotate, and the straw cutter 9 cuts the straw; when the straw cutter 9 needs to be replaced after being damaged, the second bolt 12 is loosened, then the limiting column 11 connected with the fixed plate 10 is separated from the inside of the connecting block 8, and then the straw cutter 9 is disassembled together with the connecting block 8, and then replaced; and the broken soil cutter 3 is inserted on the outer surface of the cutter head 2 during installation, then the two baffles 5 limit it on both sides, and the first bolt 4 is tightened to fix it, preventing it from swinging during use, improving the safety and stability of use.

[0031] It should be noted that the standard parts used in the application can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings, and the specific connection mode of each part adopts the mature bolt, rivet, welding and the like in the prior art, the conventional means, and the conventional type of machinery, parts and equipment in the prior art; plus the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here, and the contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0032] It should be noted that in this paper, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the term "include", "contain" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or equipment including the element.

[0033] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations of the embodiments can be made without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A structure for a rotary tillage blade for crushing and returning straw to the field, comprising a drive shaft (1), characterized in that: The outer surface of the transmission spindle (1) is welded with a cutter disc (2), and the outer surface of the cutter disc (2) is provided with a replacement structure; The replacement structure includes a connecting seat (6), which is fixedly connected to the outer surface of the cutter head (2). A connecting block (8) is detachably connected inside the connecting seat (6). A straw cutter (9) is fixedly connected to the top of the connecting block (8). A fixing plate (10) is detachably connected to the outer surface of the connecting seat (6). A limit post (11) is fixedly connected to the inner surface of the fixing plate (10). A second bolt (12) is threaded inside the fixing plate (10).

2. The structure of the straw crushing and returning rotary tillage blade according to claim 1, characterized in that: The outer surface of the cutter head (2) is detachably connected to a soil-breaking blade (3), and the soil-breaking blade (3) is internally threaded with a first bolt (4). The soil-breaking blade (3) is detachably connected to the cutter head (2) through the first bolt (4).

3. The structure of the straw crushing and returning rotary tillage blade according to claim 2, characterized in that: The outer surface of the cutter head (2) is fixedly connected with six baffles (5), and the six baffles (5) are symmetrically distributed on the outer surface of the cutter head (2) in pairs.

4. The structure of the straw crushing and returning rotary tillage blade according to claim 1, characterized in that: The connecting seat (6) has a connecting groove (7) inside, and the connecting block (8) is located inside the connecting seat (6) through the connecting groove (7).

5. The structure of a straw crushing and returning rotary tillage blade according to claim 1, characterized in that: The connecting block (8) has an insertion groove inside, and the limiting post (11) is limited and engaged with the connecting block (8) through the insertion groove. The limiting post (11) is square in shape.

6. The structure of the straw crushing and returning rotary tillage blade according to claim 1, characterized in that: The fixing plate (10) is L-shaped, and the outer surface of the connecting seat (6) is provided with trapezoidal blocks. The fixing plate (10) is detachably connected to the connecting seat (6) by the second bolt (12).

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