High-frequency self-excited vibration type suppression roller for seedbed soil after sowing

Abstract

The invention discloses a high-frequency self-excited vibration type suppression roller for seedbed soil after sowing and belongs to agricultural machinery. Four roller wheels are rotatably sleeved on the roller shaft, each roller wheel is provided with six spokes, impact vibration blocks with arc-shaped grooves are slidably sleeved on the spokes, arc-shaped limiting plates are respectively and fixedly arranged on the roller shaft between two adjacent roller wheels on the left side and the right side, and the arc-shaped limiting plates are fixedly arranged on the roller shaft. The arc-shaped limiting plates on the left side and the right side are in insertion radial limiting fit or separation insertion fit with the impact vibration blocks on the two adjacent rollers on the left side and the right side respectively, four strip-shaped grooves are formed in the inner wall face of the roller sleeve in the circumferential direction at the angle of 15 degrees, and strip-shaped bosses are arranged on the outer wall faces of the rollers. The four roller wheels are fixedly arranged in the roller sleeve sleeve hole in the circumferential direction in a manner of being staggered by 15 degrees in sequence through the insertion, clamping and matching of the strip-shaped bosses and the four strip-shaped grooves; the roller achieves high-frequency self-excited vibration type pressing operation, is novel, unique, reasonable and simple in structure, good in operation effect and reliable to use, and provides high-quality seedbed conditions for seed germination.

Description

Technical Field

[0001] The invention belongs to agricultural machinery, and mainly relates to a seed bed soil compactor. Background Art

[0002] In order to improve the germination rate of seeds after sowing operations and avoid the influence of air leakage and ventilation and reduce the seed germination rate, the soil of the seed bed after sowing is compacted by a pressing roller at the same time as the sowing operation is completed. At present, the various types of seed bed pressing rollers currently used rely on their own weight and auxiliary profiling mechanisms to roll smoothly in contact with the seed bed soil compaction, without impact vibration pressure. In many years of production operation practice, it is found that the quality and effect of the seed bed soil pressing operation cannot adapt to and meet the requirements of high-level agronomic technology operations. Therefore, how to reliably and effectively improve the quality of the seed bed soil pressing after sowing operations, simplify the structure, reduce the manufacturing cost, and facilitate configuration and installation are technical problems that must be solved. In order to solve the above problems, vibrating pressing rollers have been developed, but because their vibration power sources mostly adopt the structural design of external power sources, there are many defects and problems such as complex structure, high manufacturing cost, and difficulty in configuration on machinery. Summary of the invention

[0003] The purpose of the present invention is to address the problems existing in the above-mentioned prior art, combine with the current actual needs for seed bed soil compaction operations, and develop and design a high-frequency self-excited vibration compactor for the seed bed soil after sowing, so as to greatly improve the quality and effect of the compaction operation, simplify the structure, reduce the manufacturing cost, facilitate use, and provide a good seed bed environment for seed germination.

[0004] The purpose of the invention is achieved in this way: four rollers are rotatably mounted on the roller shaft in sequence, six spokes are evenly arranged on each roller along the circumferential direction, and an impact vibration block with an arc groove is radially reciprocatingly slidably mounted on each spoke, and an arc-shaped limiting plate is fixed on the roller shaft, at a position between two adjacent rollers on the left side and at a position between two adjacent rollers on the right side, respectively, and the arc-shaped limiting plates on the left side and the right side are respectively fixed with the impact vibration blocks on the two adjacent rollers on the left side. The arc groove and the arc groove of the impact vibration block on the two adjacent rollers on the right are inserted into or disengaged from the radial limit fit in sequence, and four strip grooves are arranged on the inner wall of the roller sleeve in sequence along the circumferential direction with an angle α of 15°. A strip boss is arranged on the circumferential outer wall of the roller, and the four rollers are fixed in the sleeve hole of the roller sleeve in sequence along the circumferential direction with an offset of 15° through the insertion and locking fit of the strip boss and the four strip grooves, thereby forming a high-frequency self-excited vibration pressing roller for the soil in the seed bed after sowing.

[0005] The invention uses the impact energy generated by multiple impact vibration blocks that reciprocate radially in sequence, realizes high-frequency and high-density up and down vibrations in the circular rotation of the roller and the roller sleeve, produces a good compaction effect on the seed bed soil after the sowing operation, avoids and eliminates ventilation and air leakage of the seed bed, increases the ground temperature and the moisture content of the seed bed soil, and has the characteristics of novel, unique, reasonable and simple structure, good compaction operation effect, improved seed germination rate, and convenient and reliable use. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic diagram of the overall structure of a high-frequency self-excited vibration type pressing roller for the seed bed soil after sowing;

[0007] Figure 2 yes Figure 1 The schematic diagram of the structure after the seat plate, roller frame and roller sleeve are removed;

[0008] Figure 3 It is a two-dimensional schematic diagram of the assembly structure of the roller shaft, roller wheel, vibration impact block, and arc-shaped limit plate;

[0009] Figure 4 It is a schematic diagram of the roller structure;

[0010] Figure 5 It is a schematic diagram of the roller sleeve structure;

[0011] Figure 6 It is a schematic diagram of the structure of the impact vibration block;

[0012] Figure 7 1. It is a schematic diagram of the structure of the arc-shaped limiting plate;

[0013] Figure 8 yes Figure 7 A-A sectional view.

[0014] Description of part numbers in the figure:

[0015] 1. seat plate, 2. roller frame, 3. roller shaft, 4. roller wheel, 4-1, spokes, 4-2, strip-shaped boss, 5. impact vibration block, 5-1, arc-shaped groove, 6, arc-shaped limit plate, 7. roller sleeve, 7-1, strip-shaped groove. DETAILED DESCRIPTION

[0016] The following is a detailed description of the implementation scheme of the invention in conjunction with the accompanying drawings. A high-frequency self-excited vibration type pressing roller for seedbed soil after sowing, comprising a roller frame 2, a seat plate 1 and a roller shaft 3 are respectively installed on the front end and the rear end of the roller frame 2, four rollers 4 are rotatably mounted on the roller shaft 3 in sequence, six spokes 4-1 are evenly arranged along the circumferential direction on each roller 4, and an impact vibration block 5 with an arc groove 5-1 is radially reciprocatingly slidably mounted on each spoke 4-1, and an arc-shaped limit plate 6 is fixedly installed on the roller shaft 3, between the two adjacent rollers 4 on the left side and between the two adjacent rollers 4 on the right side, and the left and right sides of the roller shaft 3 are respectively fixedly installed with arc-shaped limit plates 6. The arc-shaped limiting plate 6 is respectively inserted into or disengaged from the radial limiting fit with the arc-shaped groove 5-1 of the impact vibration block 5 on the two adjacent rollers 4 on the left and the arc-shaped groove 5-1 of the impact vibration block 5 on the two adjacent rollers 4 on the right, and four strip grooves 7-1 are arranged on the inner wall surface of the roller sleeve 7 in the circumferential direction with an angle α of 15°, and a strip boss 4-2 is arranged on the circumferential outer wall surface of the roller 4, and the four rollers 4 are fixed in the sleeve hole of the roller sleeve 7 with a 15° offset in the circumferential direction through the insertion and locking fit between the strip boss 4-2 and the four strip grooves 7-1.

[0017] When in use, the roller is installed on the working tool using the seat plate 1 and moved forward randomly, and the roller sleeve 7 is tightly compacted and pressed against the soil of the seed bed for pressing operation. Under the action of soil friction resistance, the roller sleeve 7 synchronously drives the four rollers 4 to rotate through the insertion cooperation of the strip groove 7-1 and the strip boss 4-2, and the impact vibration block 5 performs radial reciprocating sliding on the spoke 4-1 in turn. When the impact vibration block 5 moves to the highest point on the spoke 4-1 and begins to fall, the arc limit plate 6 is inserted into the arc groove 5-1 on the impact vibration block 5 to stop the impact vibration block 5 from continuing to fall and store kinetic energy. When the continuously rotating roller 4 drives the arc groove 5-1 of the impact vibration block 5 to disengage from the snap-fit ​​cooperation with the arc limit plate 6, the impact vibration block 5 quickly falls and hits the impact roller 4, and transmits it to the roller sleeve 7 to complete the vibration pressing operation on the seed bed soil. Since each roller 4 has six spokes 4-1 and six impact vibration blocks 5, there are 24 impact vibration blocks 5 on the four rollers 4. Meanwhile, the four rollers 4 are fixed in the roller sleeve 7 with a 15° offset in the circumferential direction. That is, each time the roller sleeve 7 rotates 15°, an impact vibration block 5 operates once. When the roller sleeve 7 rotates 360°, each impact vibration block 5 completes an impact motion in turn. The roller sleeve 7 vibrates 24 times to complete the high-frequency self-excitation suppression operation.

Claims

1. A high-frequency self-excited vibration type pressing roller for soil in a seedbed after sowing, comprising a roller frame (2), a seat plate (1) and a roller shaft (3) being respectively mounted on the front end and the rear end of the roller frame (2), characterized in that: Four rollers (4) are rotatably mounted on the roller shaft (3) in sequence, six spokes (4-1) are evenly arranged along the circumferential direction on each roller (4), an impact vibration block (5) with an arc groove (5-1) is radially reciprocatingly slidably mounted on each spoke (4-1), an arc-shaped limiting plate (6) is respectively fixedly mounted on the roller shaft (3) at a position between two adjacent rollers (4) on the left side and at a position between two adjacent rollers (4) on the right side, and the arc-shaped limiting plates (6) on the left side and the right side are respectively fixedly mounted with the impact vibration blocks on the two adjacent rollers (4) on the left side. The arc groove (5-1) of the impact vibration block (5) and the arc groove (5-1) of the two adjacent rollers (4) on the right are inserted into radial limiting fit or disengaged from radial limiting fit in sequence, four strip grooves (7-1) are arranged in sequence on the inner wall surface of the roller sleeve (7) along the circumferential direction with an angle α of 15°, and a strip boss (4-2) is arranged on the circumferential outer wall surface of the roller (4), and the four rollers (4) are fixedly mounted in the sleeve hole of the roller sleeve (7) in sequence with an offset of 15° along the circumferential direction through the insertion locking fit of the strip boss (4-2) and the four strip grooves (7-1).

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