Reverse stirring soil conditioner

Abstract

The utility model discloses a reverse stirring soil conditioner, which relates to the technical field of soil tests, and comprises a soil loader, a stirring mechanism and a support arm mechanism, the stirring mechanism is suspended in the soil loader from top to bottom, the stirring mechanism is connected with the support arm mechanism, the stirring mechanism comprises an inner rotating structure and an outer rotating structure, and the inner rotating structure is connected with the outer rotating structure. The inner rotating structure and the outer rotating structure are in reverse rotating connection through a bevel gear set, the inner rotating structure and the outer rotating structure are each provided with at least one stirring blade, and the stirring blades are in a blade shape. The soil stirring and adjusting device is time-saving and labor-saving, a test soil sample is uniformly stirred, the labor workload is small, and the soil stirring uniformity degree is easier to observe because the test soil sample is uniformly stirred, so that the soil test result is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of geotechnical testing, in particular to a reverse stirring soil conditioner. Background Art

[0002] The boundary moisture content refers to the boundary moisture content when clay transitions from one consistency state to another, also known as the consistency limit. In order to determine the boundary moisture content when clay transforms from the flowing state, plastic state, semi-solid state and solid state, it is one of the basic indicators of clay in geotechnical tests. In order to classify soil, calculate the natural consistency and plasticity index for engineering design and construction. Basic principles of geotechnical tests: Due to different moisture contents, the soil is in the flowing state, plastic state, semi-solid state and solid state respectively. The boundary moisture content between the flowing state and the plastic state is called the liquid limit of the soil, and the boundary moisture content between the plastic state and the semi-solid state is called the plastic limit of the soil. The main test methods currently include: liquid and plastic limit combined determination method, disc instrument liquid limit test method, and rolling and rubbing plastic limit test method. Regardless of which test method is used, the soil to be tested needs to be adjusted to different states.

[0003] When conducting geotechnical tests such as liquid limit and plastic limit, it is necessary to mix natural soil samples and water in a certain proportion, and ensure that the soil and water are fully integrated and uniform. At present, general projects require dozens, even hundreds or thousands of soil samples, and the project progress is fast. After investigation and reference, it is found that the manual soil mixing method is generally used in the market, which has the problems of time-consuming and labor-intensive, uneven mixing of test soil samples, low efficiency, large labor workload, and the need to rely on the experience of test personnel to judge whether the mixing is uniform; and long-term repetition of high-frequency actions will have a certain negative impact on the physical and mental health of the test personnel. Utility Model Content

[0004] Technical problems to be solved by utility models

[0005] The existing manual soil mixing method has technical problems such as being time-consuming and labor-intensive, uneven mixing of test soil samples, and high labor workload. In addition, since manual soil mixing itself is difficult to mix evenly, it is even more difficult to observe the degree of soil mixing uniformity, resulting in the difficulty in obtaining very accurate results for geotechnical tests, which affects both test efficiency and test results.

[0006] Technical Solution

[0007] In order to solve the above problems, the technical solution provided by the utility model is:

[0008] A reverse stirring soil conditioner comprises a soil carrier, a stirring mechanism and an arm mechanism, wherein the stirring mechanism is suspended from top to bottom in the soil carrier, the stirring mechanism is connected to the arm mechanism, the stirring mechanism comprises an inner rotating structure and an outer rotating structure, the inner rotating structure and the outer rotating structure are connected for reverse rotation via a bevel gear set, and the inner rotating structure and the outer rotating structure are both provided with at least one stirring blade, and the stirring blade is in the shape of a blade.

[0009] The soil carrier is a container for loading the soil to be mixed, and has sufficient strength and durability to withstand the forces that may be generated during the mixing process. The mixing mechanism is the core part of the soil conditioner and is responsible for mixing and mixing the soil. It is suspended from top to bottom in the soil carrier. There is no mixing structure at the bottom of the soil carrier, so the mixing space of the soil becomes larger and can accommodate more soil. The suspended setting makes it convenient for the mixing mechanism to be removed from the soil carrier, which is convenient for adding and removing soil, and also convenient for cleaning the device, greatly reducing the labor workload. The mixing mechanism is connected to the arm mechanism, which not only supports the mixing mechanism, but also ensures that it can be freely lifted and rotated inside the soil carrier. The mixing mechanism includes an inner rotating structure and an outer rotating structure. The two parts are connected in reverse rotation through a helical gear set, that is, when the inner rotating structure rotates clockwise, the outer rotating structure rotates counterclockwise, and vice versa. This reverse rotation design enables the soil to form a more complex flow pattern during the mixing process, thereby achieving more uniform mixing. Both the inner rotating structure and the outer rotating structure are provided with at least one mixing blade, and the shape of the mixing blade is blade-shaped. This design enables the stirring blades to cut into the soil during rotation, effectively chopping and mixing the soil. At the same time, the blade-shaped stirring blades also have a certain crushing ability, which can break up large particles or lumps in the soil, further improving the mixing effect.

[0010] As an option, the external rotating structure includes an external rotating head, an external rotating arm and an external stirring blade that are connected to each other; the internal rotating structure includes an internal rotating head, an internal rotating arm and an internal stirring blade that are connected to each other; a driving bevel gear is coaxially fixedly connected to the lower part of the external rotating head; the driving bevel gear is meshingly connected to a vertical reverse transmission gear; the reverse transmission gear is meshingly connected to a driven bevel gear; the driven bevel gear is fixed to the internal rotating head; the external rotating head and the internal rotating head are rotatably connected to a center column.

[0011] When the outer rotating head is driven to rotate and drives the active bevel gear to rotate, the active bevel gear transmits the rotation to the driven bevel gear through the reverse transmission gear, so that the inner rotating head rotates in the opposite direction. Since the outer rotating head and the inner rotating head are connected to the outer stirring blade and the inner stirring blade respectively, this reverse rotation will cause the stirring blade to form a complex stirring and mixing effect in the soil carrier. Both the outer rotating head and the inner rotating head are rotatably connected to the central column. This connection method ensures the stability and reliability of the stirring mechanism during the rotation process.

[0012] Optionally, the rotation radius of the outer stirring blade is greater than the rotation radius of the inner stirring blade plus the blade width.

[0013] Avoid interference between the outer stirring blades and the inner stirring blades.

[0014] Optionally, the angle between the outer stirring blade and the inner stirring blade and their respective rotation circles is less than 80° and greater than 10°.

[0015] The outer stirring blades and the inner stirring blades need to cut and stir the soil, so they need to be parallel to the tangent of the rotating circle. However, complete parallelism may weaken the stirring effect and completely turn it into cutting the soil. Therefore, the angle range is limited to make the stirring effect of the stirring blades better.

[0016] Optionally, the outer rotating head is connected to a driving motor, and the outer rotating head is rotatably connected to an end of the arm mechanism.

[0017] The driving motor is used to drive the stirring mechanism.

[0018] Optionally, the reverse transmission gears are provided with two symmetrical ones, which are connected by a connecting shaft in the middle, and the two reverse transmission gears are respectively meshed with the driving bevel gear and the driven bevel gear.

[0019] The two symmetrical reverse transmission gears can improve transmission stability, while improving the stability of the transmission structure and reducing the occurrence of gear slippage.

[0020] Optionally, the arm mechanism is in an inverted U shape, one end of the arm mechanism connected to the stirring mechanism is located above the soil carrier, and the other end of the arm mechanism is fixedly connected to the soil carrier.

[0021] The support arm mechanism is fixedly connected to the soil carrier, which is beneficial to improving the overall stability, and is connected to the stirring mechanism to provide structural support for the stirring mechanism.

[0022] Optionally, the arm mechanism is provided with a lifting mechanism, which controls the lifting and lowering of the stirring mechanism. The lifting mechanism has a built-in lifting cylinder, which is connected to a gas valve and a controller. The arm mechanism is divided into two sections and is respectively connected to the two ends of the lifting cylinder.

[0023] The lifting mechanism is used to provide lifting support for the stirring mechanism.

[0024] Optionally, the stirring blade is a detachable blade.

[0025] The removable stirring blade is easy to clean, replace and maintain.

[0026] Beneficial Effects

[0027] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0028] The stirring mechanism of the utility model includes an inner rotating structure and an outer rotating structure, and the two parts are connected by a bevel gear set to achieve reverse rotation, that is, when the inner rotating structure rotates clockwise, the outer rotating structure rotates counterclockwise, and vice versa. This reverse rotation design can make the soil form a more complex flow pattern during the stirring process, thereby achieving a more uniform mixing; the blade-shaped stirring blade also has a certain crushing ability, which can crush large particles or lumps in the soil, further improving the mixing effect; the stirring mechanism is suspended from top to bottom in the soil carrier, and there is no stirring structure at the bottom of the soil carrier, so the stirring space of the soil becomes larger and can accommodate more soil, and the suspended setting facilitates the stirring mechanism to be removed from the soil carrier, which is convenient for adding and removing soil, and is also convenient for cleaning the device, greatly reducing the labor workload. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the structure of a reverse stirring soil conditioner proposed in an embodiment;

[0030] Figure 2 A schematic diagram of the structure of a stirring mechanism of a reverse stirring soil conditioner proposed in an embodiment;

[0031] Figure 3 A stirring principle diagram of a reverse stirring soil conditioner proposed in an embodiment;

[0032] Figure 4 A schematic diagram of the structure of a rotating disk of a reverse stirring soil conditioner proposed in an embodiment;

[0033] 1. Soil carrier; 2. Mixing mechanism; 3. Support arm mechanism; 4. Lifting mechanism; 5. Control panel; 6. Bracket; 7. Driving motor; 8. External rotating head; 9. External rotating arm; 10. External blade connecting rod; 11. External stirring blade; 12. Active bevel gear; 13. Reverse transmission gear; 14. Connecting shaft; 15. Center column; 16. Driven bevel gear; 17. Internal rotating head; 18. Internal rotating arm; 19. Internal blade connecting rod; 20. Internal stirring blade; 21. Screw; 22. Rotating disk; 23. Output shaft; 24. Annular slide rail. DETAILED DESCRIPTION

[0034] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.

[0035] Example 1

[0036] Combined with Figure 1 , 2A reverse stirring soil conditioner comprises a soil carrier 1, a stirring mechanism 2 and an arm mechanism 3, wherein the stirring mechanism 2 is suspended from top to bottom in the soil carrier 1, the stirring mechanism 2 is connected to the arm mechanism 3, the stirring mechanism 2 comprises an inner rotating structure and an outer rotating structure, the inner rotating structure and the outer rotating structure are connected for reverse rotation via a bevel gear set, and the inner rotating structure and the outer rotating structure are both provided with at least one stirring blade, and the stirring blade is in the shape of a blade.

[0037] The soil carrier 1 is a container for loading soil that needs to be stirred. The soil carrier 1 is cylindrical and made of stainless steel. The stirring mechanism 2 is suspended from top to bottom, does not contact the soil carrier 1, and is connected to the arm mechanism 3. The inner rotating structure and the outer rotating structure are connected in reverse rotation through a bevel gear set, that is, when the inner rotating structure rotates clockwise, the outer rotating structure rotates counterclockwise, and vice versa. This reverse rotation design enables the soil to form a more complex flow pattern during the stirring process, thereby achieving a more uniform mixing. In this embodiment, the inner rotating structure and the outer rotating structure are both provided with three stirring blades, and the blade-shaped stirring blades also have a certain crushing ability, which can crush large particles or lumps in the soil, further improving the mixing effect. The original soil rotates at a high speed in the soil carrier 1, and is forced to stir, so that the water and soil are fully and evenly fused, greatly improving work efficiency.

[0038] Combined with Figure 2 The outer rotating structure includes an outer rotating head 8, an outer rotating arm 9 and an outer stirring blade 11 connected to each other; the inner rotating structure includes an inner rotating head 17, an inner rotating arm 18 and an inner stirring blade 20 connected to each other; a driving bevel gear 12 is coaxially fixedly connected below the outer rotating head 8; the driving bevel gear 12 is meshedly connected to a vertical reverse transmission gear 13; the reverse transmission gear 13 is meshedly connected to a driven bevel gear 16; the driven bevel gear 16 is fixedly connected to the inner rotating head 17; the outer rotating head 8 and the inner rotating head 17 are rotatably connected to a central column 15.

[0039] The outer rotating head 8 and the inner rotating head 17 are both disc-shaped, and the outer rotating arm 9 and the inner rotating arm 18 are respectively connected to the outer rotating head 8 and the inner rotating head 17 in a circumferentially divergent shape. The outer stirring blade 11 is connected to the outer rotating arm 9 through the outer blade connecting rod 10, and the inner stirring blade 20 is connected to the inner rotating arm 18 through the inner blade connecting rod 19. The outer stirring blade 11 and the inner stirring blade 20 are both rectangular blade-shaped, which is convenient for cutting soil.

[0040] Combined with Figure 4, the outer rotating head 8 is connected to the driving motor 7, and the outer rotating head 8 is rotatably connected to the end of the arm mechanism 3. A rotating disk 22 is provided at the end of the arm mechanism 3, and the rotating disk 22 is axially limited and connected to the arm mechanism 3. The outer rotating head 8 is fixedly connected to the rotating disk 22, and the driving motor 7 is fixedly connected to the inside of the arm mechanism 3. The output shaft 23 of the driving motor 7 is connected to the outer rotating head 8 and passes through the rotating disk 22. An annular slide rail 24 is provided between the rotating disk 22 and the end of the arm mechanism 3 to realize the function of the driving motor 7 driving the outer rotating head 8 to rotate.

[0041] Combined with Figure 3 The working principle of the entire stirring mechanism 2 is as follows: when the outer rotating head 8 is driven by the driving motor 7 and drives the active bevel gear 12 to rotate, the active bevel gear 12 transmits the rotation to the driven bevel gear 16 through the reverse transmission gear 13, thereby causing the inner rotating head 17 to rotate in the opposite direction. Since the outer rotating head 8 and the inner rotating head 17 are respectively connected to the outer stirring blade 11 and the inner stirring blade 20, this reverse rotation causes the stirring blades to form a reverse and complex stirring and mixing effect in the soil carrier 1, thereby achieving more uniform mixing.

[0042] The reverse transmission gears 13 are provided with two symmetrical ones, connected by a connecting shaft 14 in the middle, and the two reverse transmission gears 13 are respectively meshed with the driving bevel gear 12 and the driven bevel gear 16. The two symmetrical reverse transmission gears 13 can improve the transmission stability, improve the stability of the transmission structure, and reduce the occurrence of gear slippage.

[0043] The arm mechanism 3 is in an inverted U shape, one end of the arm mechanism 3 connected to the stirring mechanism 2 is located above the soil carrier 1, and the other end of the arm mechanism 3 is fixed to the soil carrier 1. The inverted U-shaped arm mechanism 3 facilitates the stirring mechanism 2 to be suspended from top to bottom in the soil carrier 1, which is equivalent to hanging the stirring mechanism 2 on the arm mechanism 3.

[0044] The arm mechanism 3 is provided with a lifting mechanism 4, which controls the lifting and lowering of the stirring mechanism 2. The lifting mechanism 4 is built with a lifting cylinder, and the lifting cylinder is connected with an air valve and a controller. The arm mechanism 3 is divided into two sections and connected to the two ends of the lifting cylinder. Specifically, the lifting cylinder is composed of a cylinder body, a piston, a rod and an end cover. Among them, the cylinder body is cylindrical and made of aluminum alloy and other materials, and has the advantages of pressure resistance and wear resistance; the piston is the moving part inside the cylinder, which realizes up and down or push-pull movement under the action of air pressure; the rod is an extension of the piston, which is used to connect mechanical equipment; the end cover is used to fix the cylinder body and set the air valve interface, air hole, etc. The controller is used to control the lifting and lowering, and the air valve can be inflated and pressurized and decompressed by pumping air. When the air pressure flows from the air valve of the cylinder into the cylinder body, the piston pushes outward; on the contrary, when the air pressure flows out of the air valve from the cylinder body, the piston retracts inward. The opening and closing of the air valve are controlled by an electromagnet or a manual valve.

[0045] Example 2

[0046] Combined with Figure 2 Compared with the technical solution of Example 1, the reverse stirring soil conditioner of this embodiment can be improved as follows:

[0047] The rotation radius of the outer stirring blade 11 is greater than the rotation radius of the inner stirring blade 20 plus the blade width.

[0048] In this embodiment, the widths of the outer stirring blade 11 and the inner stirring blade 20 are the same, and the distance between the outer stirring blade 11 and the inner stirring blade 20 can be avoided from interfering with each other and preventing the stirring blades from being damaged as long as it is greater than the sum of half the width of the outer stirring blade 11 and half the width of the inner stirring blade 20.

[0049] Example 3

[0050] Combined with Figure 2 Compared with the technical solution of embodiment 1 or 2, the reverse stirring soil conditioner of this embodiment can be improved as follows:

[0051] The angle formed between the outer stirring blade 11 and the inner stirring blade 20 and their respective rotation circles is less than 80° and greater than 10°.

[0052] The angle between the outer stirring blade 11 and the inner stirring blade 20 and their respective rotational circles can be 11°, 50° or 79°. The outer stirring blade 11 and the inner stirring blade 20 need to cut and stir the soil, so they need to be parallel to the tangent of the rotational circle, i.e. 0°, but complete parallelism may weaken the stirring effect and completely turn into cutting soil, so limiting the angle range makes the stirring effect of the stirring blade better. If the outer stirring blade 11 and the inner stirring blade 20 are perpendicular to the tangent of the rotational circle, the cutting effect will be greatly reduced.

[0053] Example 4

[0054] Combined with Figure 2 , a reverse stirring soil conditioner of this embodiment can be improved as follows compared with any one of the technical solutions of embodiments 1-3:

[0055] The stirring blades are detachable blades. The ends of the outer blade connecting rod 10 and the inner blade connecting rod 19 are provided with threaded holes, and the ends of the outer rotating arm 9 and the inner rotating arm 18 are provided with screws 21, which are fastened in cooperation with the threaded holes to fix the outer stirring blades 11 and the inner stirring blades 20 respectively. After the stirring mechanism 2 is raised and the soil carrier 1 is removed, the outer stirring blades 11 and the inner stirring blades 20 can be easily disassembled for cleaning, maintenance and replacement, which saves manpower and improves test efficiency.

[0056] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A reverse stirring soil conditioner, characterized in that: It includes a soil carrier, a stirring mechanism and an arm mechanism, wherein the stirring mechanism is suspended from top to bottom in the soil carrier, the stirring mechanism is connected to the arm mechanism, the stirring mechanism includes an inner rotating structure and an outer rotating structure, the inner rotating structure and the outer rotating structure are connected for reverse rotation via a bevel gear set, and both the inner rotating structure and the outer rotating structure are provided with at least one stirring blade, which is in the shape of a blade.

2. A reverse stirring soil conditioner according to claim 1, characterized in that: The outer rotating structure includes an outer rotating head, an outer rotating arm and an outer stirring blade connected to each other; the inner rotating structure includes an inner rotating head, an inner rotating arm and an inner stirring blade connected to each other; a driving bevel gear is coaxially fixedly connected to the lower part of the outer rotating head; the driving bevel gear is meshedly connected to a vertical reverse transmission gear; the reverse transmission gear is meshedly connected to a driven bevel gear; the driven bevel gear is fixedly connected to the inner rotating head; the outer rotating head and the inner rotating head are rotatably connected to a central column.

3. A reverse stirring soil conditioner according to claim 2, characterized in that: The rotation radius of the outer stirring blade is greater than the rotation radius of the inner stirring blade plus the blade width.

4. A reverse stirring soil conditioner according to claim 3, characterized in that: The angle formed by the outer stirring blade and the inner stirring blade with their respective rotation circles is less than 80° and greater than 10°.

5. A reverse stirring soil conditioner according to claim 2, characterized in that: The outer rotating head is connected to the driving motor, and the outer rotating head is rotatably connected to the end of the supporting arm mechanism.

6. A reverse stirring soil conditioner according to claim 2, characterized in that: The reverse transmission gears are provided with two symmetrical ones, which are connected by a connecting shaft in the middle, and the two reverse transmission gears are respectively meshed with the driving helical gear and the driven helical gear.

7. A reverse stirring soil conditioner according to claim 1, characterized in that: The support arm mechanism is in an inverted U shape, one end of the support arm mechanism connected to the stirring mechanism is located above the soil carrier, and the other end of the support arm mechanism is fixedly connected to the soil carrier.

8. A reverse stirring soil conditioner according to claim 7, characterized in that: The arm mechanism is provided with a lifting mechanism, which controls the lifting and lowering of the stirring mechanism. The lifting mechanism is equipped with a lifting cylinder, which is connected to a gas valve and a controller. The arm mechanism is divided into two sections and respectively connected to the two ends of the lifting cylinder.

9. A reverse stirring soil conditioner according to claim 1, characterized in that: The stirring blade is detachable.

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