Combined auger conveying mechanism for circularly conveying soil

Abstract

The combined auger conveying mechanism comprises a one-way spiral auger conveyor assembly and a set of two-way spiral auger conveyor assemblies, and a first connecting pipe and a second connecting pipe are sequentially arranged on one side of the one-way spiral auger conveyor assembly from bottom to top; the two two-way spiral auger conveyor assemblies are arranged in parallel up and down, a first connecting pipe of each one-way spiral auger conveyor assembly is fixedly connected with the corresponding two-way spiral auger conveyor assembly on the lower portion, and a second connecting pipe of each one-way spiral auger conveyor assembly is fixedly connected with the corresponding two-way spiral auger conveyor assembly on the upper portion. By designing the three independent spiral auger conveying structures, efficient soil conveying can be achieved in the horizontal direction and the vertical direction, the problems that in the prior art, conveying efficiency is low, soil distribution is uneven and the like are effectively solved, and therefore the scientificity and precision of a reliability test of the mini-tiller are remarkably improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of agricultural equipment, and particularly relates to a combined auger conveying mechanism for circulating and conveying soil. Background Art

[0002] As an important agricultural machinery equipment, a micro-tiller is widely used in land tillage and tillage preparation. During the actual operation process, the micro-tiller needs to face various soil conditions, and its reliability directly affects the efficiency and quality of farmland operations. Therefore, conducting tests on the reliability of the micro-tiller has become a key step in evaluating and optimizing the performance of the micro-tiller. However, so far, the reliability test of the micro-tiller remains at the field test level, and there is no corresponding equipment to complete the reliability test of the micro-tiller. Therefore, a device that can circulate and transport soil is designed for reliability testing. The key to circulating and transporting soil lies in the continuity of soil transportation and the uniformity of soil transportation. When transporting horizontally, a conveyor belt mechanism can be used to complete it. When transporting vertically, how to ensure the continuity of soil transportation and the uniformity of soil transportation becomes the key.

[0003] In the development of a micro-tiller reliability test device, the transportation of soil is an essential link. During the test process, it is necessary to continuously circulate and transport the soil under the micro-tiller for repeated use to simulate the working state of the micro-tiller under the condition of unplowed soil. However, most of the existing soil transportation equipment is a simple horizontal transportation structure or a soil trough, which is difficult to meet the requirement of maintaining the characteristics of unplowed soil (the soil transported under the micro-tiller needs to have the characteristics of unplowed soil). If the soil is repeatedly tilled, this will cause the physical indexes such as the density, particle size, and humidity of the soil to become smaller and smaller, resulting in a decrease in the resistance of the soil to the rotary tiller blades, thereby affecting the reliability test results.

[0004] In the prior art, the equipment for soil transportation mainly adopts traditional conveyor belts or a single spiral auger structure. Although these equipment can achieve the horizontal transportation of soil, there are many deficiencies in vertical transportation and uniform distribution.

[0005] Conveyor belt structure: Traditional conveyor belts are mainly used for the horizontal transportation of soil, with a simple structure and easy maintenance. However, the conveyor belt has a poor effect when transporting soil vertically. In order to transport granular substances such as soil, it is necessary to add baffles at certain intervals on the surface of the conveyor belt, and it is impossible to achieve continuous and uniform transportation. Even if this method is used for up and down transportation, the slope cannot be too large, because a large slope will cause the number of soil blocks blocked by each baffle to decrease, thus affecting the transportation efficiency. However, if a smaller slope is used, the overall mechanical structure will relatively become larger, occupy more land, and the mechanical structure will become complex and unable to connect the upper and lower horizontal conveyor belts. Generally speaking, there are three problems with conveyor belt transportation: a. The problem of evenly transporting soil cannot be solved; b. How to connect the upper and lower horizontal conveyor belts; c. How to reasonably set the transmission angle and direction.

[0006] Single spiral auger structure: The spiral auger is a common soil conveying device that can effectively convey bulk materials. Although it meets the requirement of continuous transmission when used for the upper and lower conveyance of the reliability test device, the following problems will also occur. A single spiral auger usually can only convey in one direction, and at the feeding port, it cannot receive the soil transported by the front conveyor belt, nor can the discharging port spread the soil. Therefore, the transported soil will accumulate at the auger outlet. Especially in the test, it is impossible to effectively control the distribution and conveying path of the soil, which easily causes uneven distribution of the soil in the test device and affects the test results. In addition, there are certain limitations at the feeding port of the ordinary auger conveyor. Due to the special conveying principle of the auger, the auger must be inclined, and the positions of the feeding port and the discharging port will be restricted. The feeding port must be set on the side where the auger forms an obtuse angle with the horizontal direction, and the discharging port is on the other side of the feeding port direction. If a cycle is to be formed, the inlet and outlet of the auger conveyor need to be on the same side, which makes it difficult to achieve a closed loop for the circulating device.

[0007] Therefore, the present invention proposes a combined auger conveying mechanism for circulating soil transportation, which can efficiently and continuously convey soil vertically and evenly distribute it to the designated position. Summary of the Invention

[0008] In view of the problems existing in the prior art, the purpose of the present invention is to provide a combined auger conveying mechanism for circulating soil transportation, which can achieve efficient soil conveyance both horizontally and vertically, and avoid the low efficiency problem of traditional conveyor belts relying on lifting devices.

[0009] To achieve the above purpose, the technical solution of the present invention is as follows: A combined auger conveying mechanism for circulating soil transportation, comprising a one-way spiral auger conveyor assembly and a group of two-way spiral auger conveyor assemblies. On one side of the one-way spiral auger conveyor assembly, a connecting pipe one and a connecting pipe two are successively arranged from bottom to top. The two two-way spiral auger conveyor assemblies are arranged parallel to each other up and down. The connecting pipe one of the one-way spiral auger conveyor assembly is fixedly connected to the lower two-way spiral auger conveyor assembly, and the connecting pipe two of the one-way spiral auger conveyor assembly is fixedly connected to the upper two-way spiral auger conveyor assembly.

[0010] Furthermore, the one-way spiral auger conveyor assembly includes a driving motor one, a reducer one and an auger conveyor one. The output shaft of the driving motor one is connected to the input shaft of the reducer one, and the output shaft of the reducer one is connected to the auger conveyor one.

[0011] Further, the first auger conveyor includes a first casing, a unidirectional spiral blade, and a first rotating shaft. The unidirectional spiral blade is wound inside the first rotating shaft. One end of the first rotating shaft passes through the first casing and is connected to the output shaft of the first reducer through a coupling. The driving device composed of the first driving motor and the first reducer is installed at the end of the first casing.

[0012] Further, the first connecting pipe and the second connecting pipe are located on the side of the first casing facing the double - spiral auger conveyor assembly.

[0013] Further, the double - spiral auger conveyor assembly includes a second driving motor, a second reducer, and a second auger conveyor. The output shaft of the second driving motor is connected to the input shaft of the second reducer, and the output shaft of the second reducer is connected to the input shaft of the second auger conveyor.

[0014] Further, the second auger conveyor includes a feed hopper, a double - spiral blade, and a second rotating shaft. The double - spiral blade is wound on the second rotating shaft. One end of the second rotating shaft passes through the feed hopper and is connected to the output shaft of the second reducer through a coupling. The driving device composed of the second driving motor and the second reducer is fixed at the end of the feed hopper.

[0015] Further, the length of the second auger conveyor is determined by the width of the front conveyor belt.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1) By designing three independent spiral auger conveying structures, the present invention can achieve efficient soil conveyance both horizontally and vertically, effectively solving the problems of low conveyance efficiency and uneven soil distribution in the prior art, thus significantly improving the scientific nature and accuracy of the reliability test of the micro - tiller. 2) Through the design of the reversely rotating spiral auger, the present invention can effectively control the aggregation and distribution of soil during the conveyance process, ensuring the uniform distribution of soil in the test device, thereby improving the accuracy of the test. 3) By improving the soil conveyance and distribution method, the present invention can better simulate the working state of the micro - tiller during actual operation, ensuring the repeatability and reliability of the test results, and assisting in the design and optimization of the micro - tiller. 4) By using blades with different rotation directions on the same second auger conveyor, the present invention can make the material transfer from both sides to the middle or from the middle to both sides, avoiding the problems that when a common spiral auger conveyor conveys viscous materials with poor fluidity during the feeding process, the materials cannot aggregate or stick to the wall of the feeding hopper, and can also disperse the materials to prevent their accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1Schematic diagram of the overall structure of the mechanism of the present invention Figure 1 ; Figure 2 Schematic diagram of the internal part of the mechanism of the present invention Figure 2 。

[0018] In the figure: 1. First driving motor; 2. First reducer; 3. First screw conveyor; 4. First casing; 5. Unidirectional spiral blade; 6. Second driving motor; 7. Second reducer; 8. Second screw conveyor; 9. Feed hopper; 10. Bidirectional spiral blade; 11. First connecting pipe; 12. Second connecting pipe; 13. First rotating shaft; 14. Second rotating shaft; 15. Mechanism support. Specific embodiments

[0019] The present invention will be further described below with reference to the accompanying drawings, but the scope protected by the present invention is not limited to the described scope.

[0020] Please refer to Figure 1-2 , a combined screw conveyor mechanism for circulating soil transportation, including a unidirectional screw conveyor assembly and a group of bidirectional screw conveyor assemblies. The unidirectional screw conveyor assembly is used to transport materials from bottom to top, and a first connecting pipe 11 and a second connecting pipe 12 are successively arranged on one side of the unidirectional screw conveyor assembly from bottom to top.

[0021] The two bidirectional screw conveyor assemblies are arranged parallel to each other up and down. The lower bidirectional screw conveyor assembly is used to transport materials from both sides to the middle, and the upper bidirectional screw conveyor assembly is used to transport materials from the middle to both sides. The first connecting pipe 11 of the unidirectional screw conveyor assembly is fixedly connected to the lower bidirectional screw conveyor assembly, and the second connecting pipe 12 of the unidirectional screw conveyor assembly is fixedly connected to the upper bidirectional screw conveyor assembly.

[0022] The unidirectional screw conveyor assembly includes a first driving motor 1, a first reducer 2 and a first screw conveyor 3. The output shaft of the first driving motor 1 is connected to the input shaft of the first reducer 2, and the output shaft of the first reducer 2 is connected to the first screw conveyor 3.

[0023] The first screw conveyor 3 includes a first casing 4, a unidirectional spiral blade 5 and a first rotating shaft 13. The unidirectional spiral blade 5 is wound inside the first rotating shaft 13. The end of the first rotating shaft 13 passes through the first casing 4 and is connected to the output shaft of the first reducer 2 through a coupling. The driving device 1 composed of the first driving motor 1 and the first reducer 2 is installed at the end of the first casing 4.

[0024] Compared with the traditional screw conveyor where the discharge port and the feed port are on different sides, the first connecting pipe 11 and the second connecting pipe 12 of the present invention are located on the side of the first casing 4 facing the bidirectional screw conveyor assembly, and have the characteristic of being easy to form a cycle.

[0025] The double - direction screw conveyor assembly includes a second driving motor 6, a second speed reducer 7 and a second screw conveyor 8. The output shaft of the second driving motor 6 is connected to the input shaft of the second speed reducer 7, and the output shaft of the second speed reducer 7 is connected to the input shaft of the second screw conveyor 8.

[0026] The second screw conveyor 8 includes a feed hopper 9, a double - direction screw blade 10 and a second rotating shaft 14. The double - direction screw blade 10 is wound around the second rotating shaft 14. The end of the second rotating shaft 14 passes through the feed hopper 9 and is connected to the output shaft of the second speed reducer 7 through a coupling. The driving device two composed of the second driving motor 6 and the second speed reducer 7 is fixed to the end of the feed hopper 9.

[0027] Through the combination of the second screw conveyor 8 below and the first screw conveyor 3, the first screw conveyor 3 can be placed at any angle, while when an ordinary screw conveyor is placed vertically, the feed inlet needs to be set in the direction of the obtuse angle of the line surface angle.

[0028] The length of the second screw conveyor 8 is determined by the width of the front conveyor belt. It can concentrate the wide - width granular materials to the middle and continuously provide a pressure to the connecting pipe 11 of the first screw conveyor 3, so that the first screw conveyor 3 can smoothly transport the materials upward. The first screw conveyor 3 transports the materials to the second screw conveyor 8 above through the connecting pipe 12. The second screw conveyor 8 above will disperse the materials originally in the middle to both sides, reforming a wide - width transmission.

[0029] Through the combination of multiple screw conveyors and by reasonably distributing the transmission speed, the present invention can greatly improve the feeding efficiency (changing from the feeding method relying on the gravity of the materials themselves to the feeding method of mechanical structure pressing).

Claims

1. A combined auger conveying mechanism for circulating and conveying soil, characterized in that The invention comprises a unidirectional spiral auger conveyor assembly and a group of bidirectional spiral auger conveyor assemblies. A connecting pipe 1 (11) and a connecting pipe 2 (12) are sequentially arranged on one side of the unidirectional spiral auger conveyor assembly from bottom to top. The two bidirectional spiral auger conveyor assemblies are arranged in parallel up and down. The connecting pipe 1 (11) of the unidirectional spiral auger conveyor assembly is fixedly connected to the bidirectional spiral auger conveyor assembly below, and the connecting pipe 2 (12) of the unidirectional spiral auger conveyor assembly is fixedly connected to the bidirectional spiral auger conveyor assembly above.

2. A combined auger conveying mechanism for circulating and conveying soil according to claim 1, characterized in that The one-way spiral auger conveyor assembly comprises a driving motor 1 (1), a reducer 1 (2) and an auger conveyor 1 (3), wherein the output shaft of the driving motor 1 (1) is connected to the input shaft of the reducer 1 (2), and the output shaft of the reducer 1 (2) is connected to the auger conveyor 1 (3).

3. A combined auger conveying mechanism for circulating and conveying soil according to claim 2, characterized in that The auger conveyor (3) comprises a casing (4), a one-way spiral blade (5) and a rotating shaft (13), wherein the one-way spiral blade (5) is wound inside the rotating shaft (13), and the end of the rotating shaft (13) passes through the casing (4) and is connected to the output shaft of the reducer (2) via a coupling, and the driving device (1) composed of the driving motor (1) and the reducer (2) is installed at the end of the casing (4).

4. A combined auger conveying mechanism for circulating and conveying soil according to claim 3, characterized in that The connecting pipe 1 (11) and the connecting pipe 2 (12) are located on one side of the casing 1 (4) facing the bidirectional spiral auger conveyor assembly.

5. The combined auger conveying mechanism for circulating and conveying soil according to claim 1, characterized in that The bidirectional spiral auger conveyor assembly comprises a second drive motor (6), a second reducer (7) and a second auger conveyor (8), wherein the output shaft of the second drive motor (6) is connected to the input shaft of the second reducer (7), and the output shaft of the second reducer (7) is connected to the input shaft of the second auger conveyor (8).

6. A combined auger conveying mechanism for circulating and conveying soil according to claim 5, characterized in that The auger conveyor 2 (8) comprises a feed hopper (9), a bidirectional spiral blade (10) and a rotating shaft 2 (14), wherein the bidirectional spiral blade (10) is wound around the rotating shaft 2 (14), and the end of the rotating shaft 2 (14) passes through the feed hopper (9) and is connected to the output shaft of the reducer 2 (7) via a coupling, and the drive device 2 composed of the drive motor 2 (6) and the reducer 2 (7) is fixed to the end of the feed hopper (9).

7. A combined auger conveying mechanism for circulating and conveying soil according to claim 6, characterized in that The length of the auger conveyor 2 (8) is determined by the width of the front conveyor belt.

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