A deep tillage combined land preparation machine

Abstract

The invention discloses a deep tillage combined land preparation machine, which comprises a traction frame, a tooth frame beam, a deep tillage tooth assembly, a rake group and a pressure roller, wherein the traction frame is connected to the tooth frame beam, the deep tillage tooth assembly is suspended at the lower end of the tooth frame beam, the rake group comprises a rake group crossbeam and a rake blade, the pressure roller comprises a pressure roller crossbeam and a pressure roller suspended at the lower end of the pressure roller crossbeam, the rake group is located at the front end of the pressure roller, and the rake group crossbeam and the pressure roller crossbeam are connected to the tooth frame beam through the same depth limiting and leveling mechanism. The operating depth of the deep tillage tooth assembly and the rake group can be synchronously adjusted, and on the basis of synchronously adjusting the operating depth of the deep tillage tooth assembly and the rake group, the operating depth of the rake group can be further adjusted separately.

Description

Technical Field

[0001] The invention relates to an agricultural land preparation machine, in particular to a deep tillage combined land preparation machine. Background Art

[0002] The soil structure consists of an organic layer, a topsoil layer, a subsoil layer, a weathered mother layer and a bedrock layer. The organic layer and the topsoil layer are what we often call the arable layer, which are rich in organic matter, microorganisms, earthworms, etc., providing sufficient air, water and nutrients for the growth of crops, while regulating the acidity and alkalinity of the soil. A healthy, stable and reasonable soil structure can maintain the stability of its own ecosystem for a long time, and is a strong guarantee for increasing production and efficiency.

[0003] Compared with traditional tillage operations, the protective tillage method that combines crushing and deep loosening is more conducive to the reproduction of earthworms and microorganisms in the soil, loosens the soil, increases the soil organic layer, and maintains a stable soil structure. Long-term tillage operations are also prone to produce plow bottom layers and straw layers. A large amount of straw is buried underground and is not easy to rot, affecting the development of crop roots. Deep loosening and land preparation operations can effectively break the plow bottom layer, thicken the tillage layer, increase soil permeability and air permeability, enhance the soil's absorption rate and storage capacity for precipitation, and form a soil structure that coexists with both virtual and real.

[0004] In addition, tillage operations can easily cause a large amount of water and soil loss, while crushing and mixing operations can cover the soil surface with straw to retain water and moisture. In recent years, the country has been advocating returning straw to the field and deep tillage. Whether it is land preparation after autumn harvest or seedbed preparation before spring sowing, the use of deep tillage combined with land preparation machines, through the two operation methods of returning straw to the field and deep tillage, can respond to the call of national policies without destroying the soil structure, preventing wind and consolidating the soil, and resisting drought and waterlogging.

[0005] The deep tillage combined land preparation machine includes a tine frame beam at the front end, a deep tillage tooth assembly suspended on the tine frame beam, a harrow group and a pressing roller, the harrow group is located at the rear end of the deep tillage tooth assembly, and the pressing roller is located at the rear end of the harrow group; during the operation of the deep tillage combined land preparation machine, after adjusting the working depth of the deep tillage tooth assembly, the depth of the harrow group needs to be adjusted accordingly, which makes the adjustment operation cumbersome. Summary of the invention

[0006] The present invention provides a deep tillage combined land preparation machine, which can synchronously adjust the working depth of the deep tillage tooth assembly and the harrow group, and on the basis of synchronously adjusting the working depth of the deep tillage tooth assembly and the harrow group, the working depth of the harrow group can be further adjusted separately. The technical scheme adopted is specifically as follows:

[0007] A deep tillage combined land preparation machine comprises a traction frame, a tine frame beam, a deep tillage tooth assembly, a harrow group and a pressure roller assembly, wherein the traction frame is connected to the tine frame beam, the deep tillage tooth assembly is suspended at the lower end of the tine frame beam, the harrow group comprises a harrow group cross beam and a harrow blade, the pressure roller assembly comprises a pressure roller cross beam and a pressure roller suspended at the lower end of the pressure roller cross beam, the harrow group is located at the front end of the pressure roller assembly, and the harrow group cross beam and the pressure roller cross beam are connected to the tine frame beam via the same depth limiting and leveling mechanism.

[0008] The depth limiting and leveling mechanism is preferably configured to include a first connecting arm, a connecting rod, a connecting rod plate and a second connecting arm located on the same side of the first connecting arm, the connecting plate and the second connecting arm being connected by a first length adjustment structure; the connecting rod, the connecting plate and the first length adjustment structure are rotatably connected head to tail, the head end of the second connecting arm is rotatably connected to the first connecting arm, the tail end of the first length adjustment structure is rotatably connected to the main body of the second connecting arm, the main body of the connecting plate is rotatably connected to the first connecting arm, and the main body of the first connecting arm is connected with the second length adjustment structure; the head end of the first connecting arm is directly or indirectly connected to the tooth frame beam, the head end of the connecting rod is directly or indirectly connected to the tooth frame beam, the end of the second length adjustment structure away from the first connecting arm is directly or indirectly connected to the tooth frame beam, the tail end of the first connecting arm is connected to the pressure roller beam, and the tail end of the second connecting arm is connected to the rake group beam.

[0009] Further preferably, the first length adjustment structure includes a cylinder or an adjustment rod; the second length adjustment structure includes a cylinder.

[0010] Preferably, the deep loosening tooth assemblies are arranged in at least 2 rows, and the deep loosening tooth assemblies located in the front and rear rows are staggered; further preferably, the deep loosening tooth assemblies are arranged in 3 rows, and the spacing between adjacent deep loosening tooth assemblies in the same row is large, the passability is good, and power is saved; the deep loosening tooth assemblies in the front and rear rows are staggered to ensure that the loosening operation can be fully carried out and avoid missing operations.

[0011] Preferably, the harrow group is arranged in at least one row, and the harrow group includes harrows with concave surfaces facing outwards and harrows with concave surfaces facing inwards, and the concave surfaces of adjacent harrows face opposite directions; the harrows are used for crushing clods of soil and residual straw, so that the straw is fully mixed with the soil, which plays a role in preventing wind and consolidating the soil, and retaining water and moisture; adjacent harrows are arranged back to back to reduce lateral traction, so that the power can be more fully exerted and fuel consumption can be reduced.

[0012] The deep loosening tooth assembly preferably has an overload protection function. Further preferably, the deep loosening tooth assembly includes a deep loosening arm, an overload protection arm, a fixed seat, a fixed seat joint plate symmetrically arranged on the fixed seat, and a flip seat rotatably connected to the upper end of the fixed seat joint plate; the lower end of the deep loosening arm is connected with a deep loosening tooth, the upper end of the deep loosening arm is connected to the overload protection arm, one end of the overload protection arm is rotatably connected to the lower end of the fixed seat joint plate, the other end of the overload protection arm is connected to the flip seat via a first overload protection device, and the fixed seat is connected to the tooth frame beam; the deep loosening arm and the overload protection arm are connected via a second overload protection device.

[0013] Further preferably, the first overload protection device comprises a connecting piece, the connecting piece connects the overload protection arm and the flip seat, a spring for overload protection is sleeved on the connecting piece, and the overload protection arm can slide along the connecting piece. Further preferably, the connecting piece comprises a hexagonal bolt.

[0014] Preferably, the second overload protection device comprises at least one shear bolt.

[0015] The present invention also provides an operating method of a deep tillage combined with a land preparation machine, comprising the following steps: a deep tillage tooth assembly deep tills the soil, a harrow group mixes and crushes soil clods and residual straw, and a pressing roller retains soil moisture, and the operating depths of the harrow group and the deep tillage tooth assembly can be adjusted synchronously.

[0016] Beneficial effects of the present invention:

[0017] 1) When the second length adjustment structure is used to adjust the depth of the pressing roller, the harrow group and the deep loosening tooth assembly into the soil upward, the second length adjustment structure is used to adjust the depth of the pressing roller, the harrow group and the deep loosening tooth assembly into the soil shallowly; the first length adjustment structure can be used to adjust the working depth of the harrow group separately to adjust the height difference between the harrow group and the deep loosening tooth assembly; when the working depth of the deep loosening tooth assembly is adjusted by the second length adjustment structure, the working depth of the harrow group will change synchronously with the working depth of the deep loosening tooth assembly, thereby saving the secondary adjustment time of the working depth of the harrow group;

[0018] 2) When encountering obstacles such as stones, the overload protection spring provides a maximum lifting distance of 350mm; the reset spring can quickly reset the deep loosening teeth after lifting to avoid obstacles, ensuring stable working depth; when the obstacle size exceeds 350mm and the load is too large, the shear bolts in the deep loosening arm provide double protection, extending the service life of the overall structure;

[0019] 3) The adjacent harrow blades in the harrow group are set back to back to reduce lateral traction, make the power more fully exerted and reduce fuel consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the deep tillage combined land preparation machine of the present invention;

[0021] Figure 2 It is a structural schematic diagram of a front view of the depth limiting and leveling mechanism of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the front view of the deep loosening tooth assembly of the present invention;

[0023] Figure 4 yes Figure 3 The structural diagram of the AA section view;

[0024] Figure 5 It is a structural schematic diagram of a three-dimensional view of the deep loosening tooth assembly of the present invention;

[0025] Figure 6 It is a dynamic schematic diagram of the deep loosening tooth assembly of the present invention when realizing the protection function;

[0026] Figure 7 is a structural schematic diagram of a front view of a rake assembly according to the present invention;

[0027] Figure 8 yes Figure 7 A schematic diagram of the structure of a top view.

[0028] In the figure: 1, traction frame, 2, tooth frame beam, 3, deep loosening tooth assembly, 301, deep loosening arm, 302, deep loosening tooth, 303, overload protection arm, 304, fixed seat, 305, fixed seat joint plate, 306, flip seat, 307, protection spring, 308, shear bolt, 309, spring limit column, 3010, hexagonal head bolt, 3011, spring stop seat, 3012, stepped end surface of flip seat, 4, rake group, 5, pressing roller assembly, 6, depth limit leveling mechanism, 601, connecting rod, 602, connecting rod plate, 603, first connecting arm, 604, adjusting rod, 605, second connecting arm, 60501, head end of second connecting arm, 60502, tail end of second connecting arm, 608, oil cylinder. DETAILED DESCRIPTION

[0029] See also Figure 1, the deep tillage combined land preparation machine described in the present invention is further described. A deep tillage combined land preparation machine includes a traction frame 1, a tooth frame beam 2, a deep tillage tooth assembly 3, a harrow group 4 and a pressing roller assembly 5. The traction frame 1 is connected to the tooth frame beam 2, the deep tillage tooth assembly 3 is suspended at the lower end of the tooth frame beam 2, the harrow group 4 includes a harrow group crossbeam and a harrow blade, the pressing roller assembly 5 includes a pressing roller crossbeam and a pressing roller suspended at the lower end of the pressing roller crossbeam, the harrow group 4 is located at the front end of the pressing roller assembly 5, and the harrow group crossbeam and the pressing roller crossbeam are connected to the tooth frame beam 2 through the same depth limiting and leveling mechanism 6.

[0030] See also Figure 1 and Figure 2 , the depth limiting and leveling mechanism of the present invention is further described, the depth limiting and leveling mechanism 6 includes a first connecting arm 603, a connecting rod 601 located on the same side of the first connecting arm 603, a connecting rod plate 602 and a second connecting arm 605, the connecting rod plate 602 and the second connecting arm 605 are connected by an adjusting rod 604; the connecting rod 601, the connecting rod plate 602, and the adjusting rod 604 are connected head to tail in rotation, the head end 60501 of the second connecting arm is connected to the first connecting arm 603 in rotation, and the tail end of the adjusting rod is connected to the second connecting arm The main part of the arm 605 is rotatably connected, the main part of the connecting rod plate 602 is rotatably connected to the first connecting arm 603, and the main part of the first connecting arm 603 is connected to the cylinder 608; the head end of the first connecting arm 603 is indirectly connected to the tooth frame beam 2, the head end of the connecting rod 601 is indirectly connected to the tooth frame beam 2, the end of the cylinder 608 away from the first connecting arm is indirectly connected to the tooth frame beam 2, the tail end of the first connecting arm is connected to the pressure roller beam, and the tail end of the second connecting arm 60502 is connected to the rake group beam.

[0031] See also Figure 1 , Figure 7 and Figure 8 The rake group is arranged in one row, and the rake group includes rake blades with concave surfaces facing outward and rake blades with concave surfaces facing inward, and the concave surfaces of adjacent rake blades face in opposite directions. The two rake blades with concave surfaces facing in opposite directions are connected to the rake group crossbeam through the same rake leg, thereby ensuring a large spacing between the rake blades and good passability.

[0032] See also Figure 1 , Figures 3 to 6The deep loosening tooth assembly described in the present invention is further explained. The deep loosening tooth assembly 3 is arranged into 3 rows, and the deep loosening tooth assemblies located in the front and rear rows are staggered; it includes a deep loosening arm 301, an overload protection arm 303, a fixed seat 304, a fixed seat joint plate 305 symmetrically arranged on the fixed seat 304, and a flip seat 306 rotatably connected to the upper end of the fixed seat joint plate 305; the lower end of the deep loosening arm 301 is connected with a deep loosening tooth 302, the upper end of the deep loosening arm 301 is connected to the overload protection arm 303, one end of the overload protection arm 303 is rotatably connected to the lower end of the fixed seat joint plate 305, the other end of the overload protection arm 303 is connected to the flip seat 306 through a first overload protection device, and the fixed seat 304 is connected to the tooth frame beam 2; the deep loosening arm 301 and the overload protection arm 303 are connected through a second overload protection device.

[0033] The first overload protection device includes a connecting piece, which can be a hexagonal head bolt 3010 or other connecting pieces. The connecting piece is used to connect the overload protection arm 303 and the flip seat 306, and the overload protection arm 303 can slide along the connecting piece.

[0034] In this embodiment, the connecting member is a hexagonal bolt 3010, which is used to connect the overload protection arm 303 and the flip seat 306. The hexagonal bolt 3010 is sleeved with a spring limiting column 309 and a protection spring 307. The spring limiting column 309 is used to prevent the spring from being compressed to the limit. The overload protection arm 303 can slide along the hexagonal bolt 3010 (such as Figure 6 as shown).

[0035] See also Figure 4 The protection spring 307 is a double spring, which includes an outer spring and an inner spring. The hexagonal head bolt 3010 located between the overload protection arm 303 and the flip seat 306 is provided with a stepped spring stop seat 3011 near one end of the overload protection arm, and the flip seat 306 is provided with a stepped end surface 3012 for stopping the spring.

[0036] The main part of the overload protection arm 303 needs to be connected to the deep loosening arm, and both ends of the overload protection arm 303 need to be connected to the fixed seat joint plate and the first overload protection device. The shape of the overload protection arm 303 can be arc-shaped or "L"-shaped.

[0037] See also Figure 6When encountering obstacles such as stones, the protective spring provides a lifting distance of the maximum height H of 350mm; after avoiding the obstacle, the protective spring allows the deep loosening teeth 302 to quickly reset to ensure stable working depth. When the obstacle size and load are too large, and the deep loosening teeth cannot be avoided even after lifting to the maximum height, the shear bolt 308 in the deep loosening arm 301 breaks, which plays a double protection role and prolongs the service life of the overall structure.

Claims

1. A subsoiling combined land leveling machine, comprising a traction frame, a tooth frame beam, a subsoiling tooth assembly, a harrow group and a pressing roller assembly, wherein the traction frame is connected to the tooth frame beam, the subsoiling tooth assembly is suspended at the lower end of the tooth frame beam, the harrow group comprises a harrow group crossbeam and a harrow blade, the pressing roller assembly comprises a pressing roller crossbeam and a pressing roller suspended at the lower end of the pressing roller crossbeam, the harrow group is located at the front end of the pressing roller assembly, and is characterized in that: The rake group cross beam and the pressure roller cross beam are connected to the rack beam through the same depth limiting and leveling mechanism; The depth limiting and leveling mechanism includes a first connecting arm, a connecting rod, a connecting rod plate and a second connecting arm located on the same side of the first connecting arm, and the connecting plate and the second connecting arm are connected by a first length adjustment structure; the connecting rod, the connecting plate and the first length adjustment structure are rotatably connected head to tail, the head end of the second connecting arm is rotatably connected to the first connecting arm, the tail end of the first length adjustment structure is rotatably connected to the main body of the second connecting arm, the main body of the connecting plate is rotatably connected to the first connecting arm, and the main body of the first connecting arm is connected with the second length adjustment structure; the head end of the first connecting arm is directly or indirectly connected to the tooth frame beam, the head end of the connecting rod is directly or indirectly connected to the tooth frame beam, the end of the second length adjustment structure away from the first connecting arm is directly or indirectly connected to the tooth frame beam, the tail end of the first connecting arm is connected to the pressing roller beam, and the tail end of the second connecting arm is connected to the rake group beam.

2. The deep tillage combined land preparation machine according to claim 1, characterized in that: The first length adjustment structure includes a cylinder or an adjustment rod; the second length adjustment structure includes a cylinder.

3. The deep tillage combined land preparation machine according to claim 2, characterized in that: The deep loosening tooth assemblies are arranged in at least 2 rows, and the deep loosening tooth assemblies located in the front and rear rows are staggered.

4. The deep tillage combined land preparation machine according to claim 2, characterized in that: The rake group is arranged in at least one row, and the rake group includes rake blades with concave surfaces facing outwards and rake blades with concave surfaces facing inwards, and the concave surfaces of adjacent rake blades face in opposite directions.

5. The deep tillage combined land preparation machine according to claim 2, characterized in that: The deep loosening tooth assembly includes a deep loosening arm, an overload protection arm, a fixed seat, a fixed seat joint plate symmetrically arranged on the fixed seat, and a flip seat rotatably connected to the upper end of the fixed seat joint plate; the lower end of the deep loosening arm is connected with a deep loosening tooth, the upper end of the deep loosening arm is connected to the overload protection arm, one end of the overload protection arm is rotatably connected to the lower end of the fixed seat joint plate, the other end of the overload protection arm is connected to the flip seat via a first overload protection device, and the fixed seat is connected to the tooth frame beam; the deep loosening arm and the overload protection arm are connected via a second overload protection device.

6. The deep tillage combined land preparation machine according to claim 5, characterized in that: The first overload protection device comprises a connecting piece, the connecting piece connects the overload protection arm and the flip seat, a spring for overload protection is sleeved on the connecting piece, and the overload protection arm can slide along the connecting piece.

7. The deep tillage combined land preparation machine according to claim 5, characterized in that: The second overload protection device comprises at least one shear bolt.

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