A method for backfilling a fat slot, a grouting pipe and a mixing device

Abstract

This invention specifically relates to a method for backfilling fertilizer trenches, a grouting pipe, and a mixing equipment, belonging to the field of fertilizer trench backfilling technology. The method includes the following steps: S1, mixing engineering materials. S2, cleaning the base, measuring the slope of the base surface, and determining the paving parameters. S3, backfilling engineering materials layer by layer from bottom to top, each layer constructed as follows: first, paving the engineering materials, then compacting the materials using a roller, manually tamping the materials in weak areas, and installing grouting pipes in weak areas, with each grouting pipe connected sequentially from bottom to top. S4, after backfilling, slope trimming is performed. Large areas are compacted mechanically, while small weak areas are manually compacted using small equipment, ensuring the compaction effect. Grouting reinforcement in weak areas ensures the quality of backfill compaction.

Description

Technical Field

[0001] This invention belongs to the field of fertilizer trench backfilling technology, specifically relating to a fertilizer trench backfilling method, a grouting pipe, and a mixing equipment. Background Technology

[0002] To address the physical properties of soil structures and enhance their strength and bearing capacity, cement-modified soil is typically used to meet structural construction requirements. This engineering material further optimizes and improves the soil structure and its physical properties by incorporating cement in a designed proportion into the soil mix. This causes the material to lose its expansion potential, effectively improving the soil's strength, bearing capacity, durability, and impermeability. Research has found that scientifically employing cement-modified soil backfilling construction methods, combined with appropriate testing to adjust the raw material mix ratio, and ensuring proper on-site paving, compaction, and quality testing, can significantly improve the stability and impermeability of the foundation structure, achieving high-quality construction goals, bringing benefits to all project participants, and promoting the stable development of the construction industry.

[0003] When applying the cement-modified soil backfill construction method, the quality of cement-soil backfill compaction has a significant impact on the structure. Although mechanical compaction can be used in most areas, it is impossible to compact in some weak areas, such as corners and edges of exterior walls, resulting in poor compaction quality in these areas. Therefore, how to improve the backfill compaction quality in weak areas is a technical problem that needs to be solved. Summary of the Invention

[0004] The purpose of this invention is to provide a method for backfilling troughs, a grouting pipe, and a mixing device, which can improve the backfilling and compaction quality of weak points.

[0005] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows: On one hand, embodiments of this application provide a method for backfilling fertilizer trenches, comprising the following steps: S1, materials for mixing engineering.

[0006] S2. Clean the base, measure the slope of the base surface, and determine the paving parameters.

[0007] S3, starting from the base, backfill the engineering materials layer by layer from bottom to top. Each layer is constructed as follows: first, spread the engineering materials, then use a rolling equipment to compact the engineering materials, manually tamp the engineering materials in weak areas, and set up grouting pipes in weak areas. All grouting pipes are connected in sequence from bottom to top.

[0008] S4. After backfilling is completed, slope trimming work will be carried out.

[0009] In some embodiments, the engineering materials include soil and cement, wherein the maximum particle size of the soil is less than 5 cm, the content of soil with a particle size of 5 mm to 5 cm is less than 10%, and the content of soil with a particle size of 5 mm and below is greater than or equal to 90%.

[0010] In some embodiments, each layer is overfilled during paving.

[0011] In some embodiments, when using a compaction device, static compaction is performed 2-3 times first, and after the soil and surface layer are compacted and stabilized, vibratory compaction is performed 4-6 times. After the deep soil is compacted, static compaction is continued for another 2-3 times.

[0012] On the other hand, this application provides a grouting pipe, which includes multiple pipe units, with the end of each pipe unit having a pointed tip, and adjacent pipe units being connected by threads.

[0013] In some embodiments, a connecting sleeve is further included, wherein the opposite ends of two adjacent tube units are respectively provided with external threads, the inner wall of the connecting sleeve is provided with internal threads, the end of the tube unit is inserted into the connecting sleeve, and the end of the tube unit is threadedly connected to the connecting sleeve.

[0014] In another aspect, embodiments of this application provide a mixing device, including a crushing component, a vibrating screen component, a conveying component, and a mixing component. The discharge from the crushing component is input to the vibrating screen component, and the discharge end of the vibrating screen component is equipped with a quantitative discharge component. The conveying component is configured to operate intermittently, and the discharge from the quantitative discharge component is input to the conveying component, which is equipped with a spraying component and a dust spreading component. The discharge from the conveying component is then conveyed to the mixing component.

[0015] In some embodiments, the conveying assembly includes a base, a driven roller, two drive rollers, a conveyor belt, a drive shaft, two friction wheels, and a drive component. The driven roller is rotatably connected to the base, and the two drive rollers are rotatably connected to the base respectively, with the two drive rollers spaced apart along their rotation axes. The conveyor belt is wound around the driven roller and the two drive rollers. The drive shaft is rotatably connected to the base and positioned between the two drive rollers. The two friction wheels correspond one-to-one with the two drive rollers, with their end faces facing the end faces of the drive rollers. The friction wheels are movably connected to the drive shaft along its axial direction. The drive component is used to drive the two friction wheels to close or separate.

[0016] In some embodiments, the drive component includes two first elastic elements, a floating seat, and a four-sided frame. The two first elastic elements are disposed corresponding to two friction wheels and provide an elastic force to bring the two friction wheels together. The floating seat is disposed below the material-carrying portion of the conveyor belt, and the floating seat and the base are spaced apart along a first direction perpendicular to the axial direction of the drive shaft. The floating seat and the base are connected by second elastic elements. The four-sided frame is disposed between the two friction wheels and includes four sequentially rotatably connected frame bodies. The four-sided frame includes two first connecting portions disposed opposite each other along the axial direction of the drive shaft and two second connecting portions disposed opposite each other along the first direction. One of the two second connecting portions is connected to the base, and the other is disposed below the floating seat.

[0017] In some embodiments, the inner peripheral wall of the conveyor belt is provided with reinforcing ribs, and protrusions are provided on both sides of the reinforcing ribs along the axial direction of the drive shaft. The two frames connected to the second connecting part below the floating seat are a first frame and a second frame, respectively. The first frame and the second frame are provided with extension arms on the side facing away from the base. The extension arms are configured to close when the included angle between the first frame and the second frame increases. The protrusions are provided between the two extension arms, and the extension arms are rotatably provided with pressure wheels, which are located above the protrusions.

[0018] The present invention has the following beneficial effects: 1. Large areas were compacted by mechanical rolling, while small weak points were manually compacted using small equipment to ensure the compaction effect. Grouting was used to reinforce the weak points to ensure the quality of backfill compaction.

[0019] 2. By installing grouting pipes, grout can be injected to reinforce weak points after the engineering materials are compacted, ensuring the quality of backfill compaction at weak points. Multiple grouting pipes are installed from bottom to top, ensuring that the engineering materials at weak points can be reinforced by grouting during each layer of backfilling.

[0020] 3. Multiple pipe units are connected by threads, which makes it easy to combine the number of pipe units according to the number of backfill layers, so as to adjust the length of the grouting pipe.

[0021] 4. The mixing equipment has the functions of breaking up soil and replenishing water to the soil, forming an assembly line, which improves the mixing efficiency and mixing effect of engineering materials. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the mixing equipment of the present invention; Figure 2 This is a schematic diagram of the structure of the spray component of the present invention; Figure 3 This is a schematic diagram of the structure of the shaking screen assembly of the present invention; Figure 4 This is a schematic diagram of the conveying assembly of the present invention (showing a floating seat and a partial cross-sectional view of the conveyor belt); Figure 5 for Figure 4 Enlarged view of point A; Figure 6 This is a schematic diagram of the conveying assembly of the present invention (showing a quadrilateral frame and a partial cross-sectional view of the conveyor belt); Figure 7 for Figure 6 Enlarged view of point B; Figure 8 This is a test report conducted after construction according to this method.

[0023] Reference numerals: 1-Crushing assembly, 2-Shaking screen assembly, 21-Quantitative discharge component, 22-Screen, 23-Shaking screen cavity, 3-Conveying assembly, 31-Base, 32-Floating seat, 33-Driven roller, 34-Second elastic element, 35-Conveyor belt, 36-Pressure application part, 37-Drive roller, 38-Friction wheel, 39-Extension arm, 310-Reinforcing rib, 311-Protrusion, 312-First elastic element, 313-Frame, 314-Four-sided frame, 315-Pressure application wheel, 316-First connecting part, 317-Abutting wheel, 318-Second connecting part, 319-Drive shaft, 4-Ash spreading component, 5-Spraying component, 51-Spray head, 6-Mixing assembly. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0025] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0026] On the one hand, embodiments of this application provide a method for backfilling fertilizer trenches, including the following steps: S1, materials for mixing engineering.

[0027] Engineering materials include soil and cement. The specific principles by which the engineering materials formed by mixing the two can improve the soil's strength, bearing capacity, durability, and impermeability are well known to those skilled in the art and will not be elaborated here.

[0028] Since such engineering materials are known to those skilled in the art, the specific ratio of soil and cement mixture, soil moisture, and other parameters can be determined during implementation by means of previous engineering data and by conducting experiments using experimental methods known to those skilled in the art.

[0029] S2. Clean the base, measure the slope of the base surface, and determine the paving parameters.

[0030] The paving parameters to be determined can include paving thickness, number of compaction passes, and compaction degree. The specific method for determining these parameters can be based on existing construction tests.

[0031] S3, starting from the base, backfill the engineering materials layer by layer from bottom to top. Each layer is constructed as follows: first, spread the engineering materials, then use a rolling equipment to compact the engineering materials, manually tamp the engineering materials in weak areas, and set up grouting pipes in weak areas. All grouting pipes are connected in sequence from bottom to top.

[0032] Weak points refer to areas that cannot be compacted by compaction equipment, such as corners and edges of exterior walls.

[0033] When spreading the soil, you can perform a simple test on the soil. Specifically, if you squeeze the soil into a ball with your hand and it crumbles easily when you gently pinch it between two fingers, it means that the soil moisture is suitable.

[0034] When compacting manually, a frog tamper can be used for compaction.

[0035] By installing grouting pipes, grouting can be injected to reinforce weak points after the engineering materials are compacted, thus ensuring the quality of backfill compaction at weak points.

[0036] One grouting pipe can be installed for each backfill layer, and multiple grouting pipes can be installed from bottom to top to ensure that the engineering materials at weak points can be reinforced by grouting during each backfill layer.

[0037] S4. After backfilling is completed, slope trimming work will be carried out.

[0038] After backfilling, use an excavator to trim the slope. The trimming direction should be perpendicular to the channel axis and should be completed from top to bottom along the slope. After collecting the soil at the bottom of the slope, load it onto trucks and transport it to the mixing plant for remixing. Leave a 5-10cm thin soil layer, scrape off this layer along the slope length, and use shovels to clear any remaining loose soil around the equipment. After gathering the soil, drive wooden stakes into the slope. Make a section every 5 meters and fix nylon lines at each stake location. After hanging the lines, complete the stake reinforcement treatment and control the slope flatness and gradient.

[0039] S5, Quality Inspection.

[0040] After construction is completed, the backfill quality can be tested using the ring cutter method. The specific test method for the ring cutter method is well known to those skilled in the art and will not be elaborated here. In summary, in the embodiments of this application, by setting test points, the moisture content, wet density, dry density, and compaction coefficient are measured as important data for subsequent quality assessment and to determine whether the structural density meets the design requirements.

[0041] In some embodiments, the engineering materials include soil and cement, wherein the maximum particle size of the soil is less than 5 cm, the content of soil with a particle size of 5 mm to 5 cm is less than 10%, and the content of soil with a particle size of 5 mm and below is greater than or equal to 90%.

[0042] The inventors discovered during actual construction that the engineering materials prepared according to the above proportions achieved a better compaction effect. Furthermore, they referenced... Figure 8 According to the density test report conducted after backfilling, it was proven that the compaction coefficient obtained by using the soil with the above-mentioned proportions met the design requirements.

[0043] In some embodiments, each layer is overfilled during paving.

[0044] Overfilling refers to a process where the actual size of each layer of construction material is slightly larger than the designed size. Overfilling allows for adjustments later. For example, after compaction, the actual width of the construction material is greater than the designed width, allowing for adjustments to the backfill layer to ensure the backfill width matches the design width.

[0045] In some embodiments, when using a compaction device, static compaction is performed 2-3 times first, and after the soil and surface layer are compacted and stabilized, vibratory compaction is performed 4-6 times. After the deep soil is compacted, static compaction is continued for another 2-3 times to improve the compaction effect and ensure a smooth and flat surface.

[0046] During compaction, compact the sides first, then the middle. Use a slanted forward and backward compaction method for difficult areas on slopes, controlling the overlap of wheel tracks between the two sections to be approximately 0.4m. Follow the principle of "slow speed, high frequency, low amplitude, static compaction first, then vibratory compaction" for compaction, and prohibit the use of strong vibratory compaction.

[0047] On the other hand, this application provides a grouting pipe, which includes multiple pipe units, with the end of each pipe unit having a pointed tip, and adjacent pipe units being connected by threads.

[0048] The peripheral wall of the pipe unit can be provided with through holes so that the grouting fluid in the pipe unit can flow out.

[0049] Multiple pipe units are arranged from bottom to top, with the bottommost unit having a pointed tip for easy insertion into the ground. The upper pipe units are connected by threads, which facilitates connection and ensures reliable connection between the pipe units.

[0050] Multiple pipe units are connected by threads, which makes it easy to combine the number of pipe units according to the number of backfill layers, so as to adjust the length of the grouting pipe.

[0051] In some embodiments, a connecting sleeve is further included, wherein the opposite ends of two adjacent tube units are respectively provided with external threads, the inner wall of the connecting sleeve is provided with internal threads, the end of the tube unit is inserted into the connecting sleeve, and the end of the tube unit is threadedly connected to the connecting sleeve.

[0052] By connecting two adjacent pipe units with a connecting sleeve, the sealing of the connection between the two adjacent pipe units is ensured. On the other hand, the connection strength between the two adjacent pipe units is increased.

[0053] In another aspect, this application provides a mixing device, including a crushing component 1, a vibrating screen component 2, a conveying component 3, and a mixing component 6. The discharge from the crushing component 1 is input to the vibrating screen component 2, and the discharge end of the vibrating screen component 2 is equipped with a quantitative discharge component 21. The conveying component 3 is configured to operate intermittently, and the discharge from the quantitative discharge component 21 is input to the conveying component 3. The conveying component 3 is equipped with a spray component 5 and a dust spreading component 4. The discharge from the conveying component 3 is conveyed to the mixing component 6.

[0054] The crushing component 1 is used to crush clumps of soil, so that the soil can be formed into small-sized particles.

[0055] The crushing component 1 can be selected from the appropriate types of existing equipment; for example, the crushing component 1 can be a pulverizer.

[0056] The vibrating screen assembly 2 is used to vibrate and screen the material discharged from the crushing assembly 1. The structure and working principle of the vibrating screen assembly 2 are well known to those skilled in the art. In general, the vibrating screen assembly 2 includes a vibrating screen cavity 23 and a vibrating component connected to the vibrating screen cavity 23. The vibrating component enables the vibrating screen cavity 23 to be in a vibrating state. Multiple layers of screens 22 are vertically spaced inside the vibrating screen cavity 23. The soil material passes through the multiple layers of screens 22, allowing soil material of different particle sizes to be separated.

[0057] Because the sieve chamber 23 is equipped with multiple layers of screens 22, multiple discharge channels are formed. The quantitative discharge component 21 can be set up to correspond to the required discharge channels. For example, the uppermost screen 22 is used to screen soil with a particle size greater than 5cm. The discharge channel of this screen 22 does not need to be equipped with the quantitative discharge component 21, and the soil can be discharged elsewhere. The second layer of screen 22 is used to screen soil with a particle size of 5mm to 5cm. The discharge channel of this screen 22 can be equipped with the quantitative discharge component 21. The discharge channel of the next lower layer is used to discharge soil with a particle size less than 5mm, so it can also be equipped with the quantitative discharge component 21.

[0058] The quantitative discharge component 21 is used to discharge soil material from the corresponding discharge channel according to a set weight. The quantitative discharge component 21 can be selected from existing equipment of a suitable type. Its specific structure and working principle are known to those skilled in the art. In general, the quantitative discharge component 21 includes a receiving cavity. Soil material in the discharge channel is input into the receiving cavity. When the soil material in the receiving cavity reaches the set weight, the discharge port of the receiving cavity opens, allowing the soil material to be discharged.

[0059] The quantitative material dispensing component 21 facilitates the calculation of the amount of soil used, thereby making it easier to control the amount of cement used. Furthermore, it facilitates the control of the proportion of soil particles of various sizes within the soil mix.

[0060] The soil discharged by the quantitative discharge component 21 is discharged to the conveying component 3, and then conveyed to the mixing component 6 through the conveying component 3.

[0061] The mixing component 6 can be selected from the appropriate types of existing technologies, for example, it can be a common concrete mixer.

[0062] The mixing unit 6 is used to thoroughly mix the soil and cement.

[0063] The spray component 5 is positioned above the conveying assembly 3 and can play a role in dust suppression.

[0064] The spraying component 5 can be selected from existing equipment of a suitable type. In general, the spraying component 5 may include a spray channel and a spray head 51 disposed in the spray channel, the spray head 51 spraying water mist.

[0065] Multiple spray nozzles 51 can be configured, some for dust suppression and others for replenishing water to the soil when the soil moisture is insufficient.

[0066] The cement-sprinkling component 4 is used to sprinkle cement onto the soil in the conveying component 3. Compared to sprinkling cement onto the soil after it is fed into the mixing component 6, this method can improve the uniformity of the mixing of cement and soil.

[0067] The cement spreading component 4 can be selected from existing equipment. Generally speaking, the cement spreading component 4 can include a cement spreading channel with a switch. When the cement spreading channel is opened, cement can be discharged and fall onto the soil. That is, the amount of cement can be controlled by controlling the switch of the cement spreading channel.

[0068] Intermittent operation of conveying component 3 means that after conveying soil to mixing component 6 for a period of time, the conveying component 3 remains for a period of time, and this cycle is repeated.

[0069] The intermittent operation of the conveying component 3 serves several purposes. Firstly, since the common quantitative discharge component 21 discharges material intermittently, the intermittent operation of the conveying component 3 can adapt to the intermittent discharge characteristics of the quantitative discharge component 21. Secondly, it reduces the risk of dust generation caused by excessively fast transport of soil by the conveying component 3. Furthermore, in embodiments where some spray heads 51 of the spraying component 5 are used to replenish water to the soil, this arrangement allows for water replenishment time, reducing the risk that the soil may not be replenished with water due to excessively fast conveying speed of the conveying component 3.

[0070] The mixing equipment has the functions of breaking up soil and replenishing water to the soil, forming an assembly line, which improves the mixing efficiency and effect of engineering materials.

[0071] In some embodiments, the conveying assembly 3 includes a base 31, a driven roller 33, two drive rollers 37, a conveyor belt 35, a drive shaft 319, two friction wheels 38, and a drive component. The driven roller 33 is rotatably connected to the base 31, and the two drive rollers 37 are rotatably connected to the base 31 respectively, with the two drive rollers 37 spaced apart along their rotation axes. The conveyor belt 35 is wound around the driven roller 33 and the two drive rollers 37. The drive shaft 319 is rotatably connected to the base 31 and is positioned between the two drive rollers 37. The two friction wheels 38 correspond one-to-one with the two drive rollers 37, with the end faces of the friction wheels 38 facing each other. The friction wheels 38 are movably connected to the drive shaft 319 along its axial direction. The drive component is used to drive the two friction wheels 38 to close or separate.

[0072] The driven roller 33 and two drive rollers 37 are used to straighten the conveyor belt 35.

[0073] The power source for drive shaft 319 can be selected from existing power equipment, which will not be elaborated here.

[0074] The friction wheel 38 is configured to move axially along the drive shaft 319 without rotating relative to the drive shaft 319. For example, the peripheral wall of the drive shaft 319 may be provided with a key, and the inner wall of the inner hole through which the drive shaft 319 passes of the friction wheel 38 is provided with a keyway. When the key is accommodated in the keyway, the friction wheel 38 will not rotate relative to the drive shaft 319.

[0075] When the drive shaft 319 rotates, the friction wheel 38 is controlled in the axial position of the drive shaft 319 by the drive component, thereby achieving the purpose of intermittently driving the conveyor belt 35 to move. Specifically, when the friction wheel 38 abuts against the drive roller 37, the drive roller 37 can rotate with the friction wheel 38; conversely, when the friction wheel 38 is separated from the drive shaft 319, the drive roller 37 remains stationary.

[0076] The advantage of this design is that the drive shaft 319 can remain in a rotating state, reducing the difficulty of control and adapting to harsh environments with high dust levels. Furthermore, the drive roller 37 and friction wheel 38 are connected via frictional transmission, which protects the power source of the drive shaft 319.

[0077] In some embodiments, the drive component includes two first elastic elements 312, a floating seat 32, and a quadrilateral frame 314. The two first elastic elements 312 are disposed corresponding to the two friction wheels 38, and are used to provide an elastic force that brings the two friction wheels 38 together. The floating seat 32 is disposed below the material-carrying portion of the conveyor belt 35. The floating seat 32 and the base 31 are spaced apart along a first direction perpendicular to the axial direction of the drive shaft 319. The floating seat 32 and the base 31 are connected by a second elastic element 34. The quadrilateral frame 314 is disposed between the two friction wheels 38. The quadrilateral frame 314 includes four sequentially rotatably connected frame bodies 313. The quadrilateral frame 314 includes two first connecting portions 316 disposed opposite each other along the axial direction of the drive shaft 319 and two second connecting portions 318 disposed opposite each other along the first direction. One of the two second connecting portions 318 is connected to the base 31, and the other is disposed below the floating seat 32.

[0078] The first elastic element 312 can be a spring. The first elastic element 312 is connected to the friction wheel 38 and the drive shaft 319. When the two friction wheels 38 are separated, the first elastic element 312 provides an elastic force to reset the friction wheel 38.

[0079] The first direction can be the direction shown by the Z-axis in the figure. The first direction can be the vertical direction, that is, the floating seat 32 is set above the base 31.

[0080] The second elastic element 34 can also be a spring, which allows the floating seat 32 to be buoyantly connected to the base 31.

[0081] The connecting part allows two adjacent frame bodies 313 to be rotatably connected. For example, each of the two frame bodies 313 has a shaft hole. A rotating shaft passes through the shaft holes to allow the two frame bodies 313 to be rotatably connected, and the rotating shaft forms a connecting part. Therefore, the four frame bodies 313 of the quadrilateral frame 314 can form four connecting parts, namely two first connecting parts 316 and two second connecting parts 318.

[0082] Of the two second connecting parts 318, one is connected to the base 31, and the other is located below the floating seat 32, so that when the floating seat 32 is pressed down, the two second connecting parts 318 close together and the two first connecting parts 316 separate.

[0083] An elastic element, such as a torsion spring, can be installed between two adjacent frame bodies 313 for resetting.

[0084] When the soil on the conveyor belt 35 reaches a certain weight, the pressure exerted by the conveyor belt 35 on the floating seat 32 causes the floating seat 32 to be pressed down, thereby causing the two second connecting parts 318 to close and the two first connecting parts 316 to separate. The two first connecting parts 316 can then push the two friction wheels 38 to separate. When the floating seat 32 moves upward, the two second connecting parts 318 separate, the two first connecting parts 316 close, and then the two friction wheels 38 close.

[0085] The advantages of this design are twofold. First, it allows the conveying assembly 3 to operate intermittently. Second, after a portion of the material on the conveyor belt 35 is discharged, the floating seat 32 rises, and the conveyor belt 35 stops moving. When the material on the conveyor belt 35 accumulates to a certain weight, the floating seat 32 descends, and the conveyor belt 35 moves, allowing the conveyor belt 35 to discharge a fixed amount of material, which is then transported to the mixing assembly 6, thus improving the uniformity of mixing. Furthermore, the intermittent operating time of the conveying assembly 3 is adaptive. When the amount of material discharged in a single operation by the quantitative discharge component 21 increases, the stopping interval of the conveying assembly 3 automatically shortens; conversely, it automatically lengthens. Finally, the floating seat 32 provides support for the conveyor belt 35, reducing the risk of damage to the conveyor belt 35.

[0086] In this embodiment, the floating seat 32 may be provided with a pressure-applying part 36, which is used to apply pressure to the second connecting part 318.

[0087] Each of the two first connecting parts 316 is rotatably provided with abutment wheels 317, which contact the friction wheel 38, reducing the risk of wear on the first connecting parts 316.

[0088] In some embodiments, the inner peripheral wall of the conveyor belt 35 is provided with reinforcing ribs 310. Along the axial direction of the drive shaft 319, protrusions 311 are provided on both sides of the reinforcing ribs 310. The two frames 313 connected to the second connecting part 318 below the floating seat 32 are the first frame and the second frame, respectively. The first frame and the second frame are provided with extension arms 39 on the side facing away from the base 31. The extension arms 39 are configured to close when the included angle between the first frame and the second frame increases. The protrusions 311 are provided between the two extension arms 39. The extension arms 39 are rotatably provided with pressure rollers 315, which are provided above the protrusions 311.

[0089] The reinforcing rib 310 can increase the structural strength of the conveyor belt 35. The two drive rollers 37 are spaced apart so that the two drive rollers 37 can avoid the reinforcing rib 310. The floating seat 32 and the driven roller 33 can be respectively provided with avoidance grooves to avoid the reinforcing rib 310.

[0090] The extension arm 39 can be a bent structure, allowing it to close when the angle between the first frame and the second frame increases.

[0091] When the angle between the first frame and the second frame increases, the two extension arms 39 close together and move downwards, so that the pressure roller 315 can abut against the top of the protrusion 311 and apply downward pressure to the protrusion 311. This arrangement allows a depression to be formed in the middle of the conveyor belt 35. At the same time, the conveyor belt 35 can vibrate when it passes the pressure roller 315. The side of the conveyor belt 35 near the drive roller 37 can be the discharge end. This allows the soil to converge towards the middle of the conveyor belt 35 under the vibration of the conveyor belt 35 when it is discharged, reducing the risk of soil leakage from the edge of the conveyor belt 35.

[0092] Furthermore, the upper surface of the protrusion 311 can be made uneven to increase the vibration effect of the conveyor belt 35.

[0093] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications, alterations, alterations, or substitutions made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A mixing device, characterized in that, include: Crushing component (1); The material discharge input of the crushing component (1) is the shaking screen component (2), and the discharge end of the shaking screen component (2) is provided with a quantitative discharge component (21). The conveying assembly (3) is configured to operate at intervals, and the discharge input of the quantitative discharge component (21) is provided to the conveying assembly (3). The conveying assembly (3) is provided with a spray component (5) and a dust spreading component (4). The mixing assembly (6) is used to discharge the material from the conveying assembly (3) to the mixing assembly (6). The conveying assembly (3) includes: Base (31); The driven roller (33) is rotatably connected to the base (31). Two drive rollers (37) are rotatably connected to the base (31), and the two drive rollers (37) are spaced apart along the rotation axis of the drive rollers (37); A conveyor belt (35) is wound around the driven roller (33) and the two drive rollers (37). A drive shaft (319) is rotatably connected to the base (31), and the drive shaft (319) is disposed between the two drive rollers (37); Two friction wheels (38) correspond one-to-one with two drive rollers (37). The end face of the friction wheel (38) is arranged opposite to the end face of the drive roller (37). The friction wheel (38) is movably connected to the drive shaft (319) along the axial direction of the drive shaft (319). A driving component for driving the two friction wheels (38) to close or separate; The driving component includes: Two first elastic elements (312) are provided corresponding to the two friction wheels (38), and the first elastic elements (312) are used to provide an elastic force to bring the two friction wheels (38) together; A floating seat (32) is disposed below the material-carrying portion of the conveyor belt (35). The floating seat (32) and the base (31) are spaced apart along a first direction, which is perpendicular to the axial direction of the drive shaft (319). The floating seat (32) and the base (31) are connected by a second elastic element (34). The quad frame (314) is disposed between the two friction wheels (38). The quad frame (314) includes four frames (313) that are rotatably connected in sequence. The quad frame (314) includes two first connecting parts (316) that are axially opposite to each other along the drive shaft (319) and two second connecting parts (318) that are axially opposite to each other along the first direction. One of the two second connecting parts (318) is connected to the base (31), and the other is disposed below the floating seat (32).

2. The mixing equipment according to claim 1, characterized in that, The inner circumferential wall of the conveyor belt (35) is provided with reinforcing ribs (310). Along the axial direction of the drive shaft (319), protrusions (311) are provided on both sides of the reinforcing ribs (310). The two frames (313) connected to the second connecting part (318) below the floating seat (32) are the first frame and the second frame, respectively. The first frame and the second frame are provided with extension arms (39) on the side facing away from the base (31). The extension arms (39) are configured to close when the angle between the first frame and the second frame increases. The protrusions (311) are provided between the two extension arms (39). The extension arms (39) are rotatably provided with pressure wheels (315). The pressure wheels (315) are provided above the protrusions (311).

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