Multifunctional land compacting device

Abstract

A multifunctional land compaction device relates to the technical field of compaction equipment and comprises a main frame body, a humidity detector, a controller, a front pressing wheel assembly, a counterweight assembly, a rear pressing wheel assembly and a front scraping assembly, the humidity detector, the controller, the front pressing wheel assembly, the counterweight assembly and the rear pressing wheel assembly are arranged on the main frame body, and the front scraping assembly is arranged on the front pressing wheel assembly. The front pressing wheel assembly is provided with a front compaction surface, the front scraping assembly is provided with an air outlet facing the front compaction surface, the counterweight assembly is movably arranged on the main frame body, the rear pressing wheel assembly comprises an inner cylinder and an outer cylinder arranged outside the inner cylinder in a sleeving mode, and the inner cylinder and the outer cylinder are coaxial and are in sliding fit. The humidity detector detects the humidity of the land and sends detected humidity data to the controller, and the controller adjusts the area of the front cleaning and scraping assembly, the area of the counterweight assembly and the area of the rear compaction surface according to the humidity condition. The multifunctional land compacting device can adapt to lands with different humidity, is wide in application range, has a self-cleaning function capable of adjusting cleaning strength, and is more convenient to operate.

Description

Technical Field

[0001] The present invention relates to the technical field of compaction equipment, and in particular to a multifunctional soil compaction device. Background Art

[0002] When raising seedlings, the land needs to be leveled and compacted before laying the ground cloth. Different soils have different soil moisture levels. When the soil moisture is high, less pressure is required for compaction. At the same time, due to the high viscosity of the soil, more soil will adhere to the pressing wheel, requiring more cleaning force. When the soil moisture is low, less pressure is required for compaction. At the same time, due to the low viscosity of the soil, less soil will adhere to the pressing wheel, requiring less cleaning force.

[0003] At present, the pressure applied to the land by the land compacting device used to compact the land is fixed and does not have a self-cleaning function. For land with different humidity, a land compacting device that can generate different pressures is required, which limits the scope of application of the existing land compacting device and requires regular cleaning of the pressure wheel, resulting in inconvenience in operation. Summary of the Invention

[0004] In view of this, it is necessary to provide a multifunctional soil compacting device, which can adjust the pressure applied to the soil, has a wide range of applications, has a self-cleaning function, can also adjust the cleaning force, and is easy to operate.

[0005] A multifunctional soil compacting device includes a main frame, a moisture detector arranged on the main frame, a controller, a front pressure wheel assembly, a counterweight assembly and a rear pressure wheel assembly, and a front scraping assembly arranged on the front pressure wheel assembly. The moisture detector is arranged at the front end of the main frame along the travel direction and is electrically connected to the controller to send the detected moisture data to the controller. The front pressure wheel assembly can be driven to travel along a predetermined path and drive the rear pressure wheel assembly to travel along the same path. The front pressure wheel assembly has a front compacting surface. The front scraping assembly has an air outlet facing the front compacting surface and can be controlled by the controller to output gas with different flow rates to clean soil attached to the front compacting surface. The counterweight assembly is movably arranged on the main frame and can be controlled by the controller to change the distance between it and the rear pressure wheel assembly. The rear pressure wheel assembly includes an inner cylinder and an outer cylinder arranged outside the inner cylinder, the two are coaxial and slidably matched, the outer surface of the outer cylinder and the outer surface of the inner cylinder exposed outside the outer cylinder form the rear compacting surface, and the outer cylinder can be controlled by the controller to slide relative to the inner cylinder to change the area of ​​the rear compacting surface.

[0006] Preferably, the front scraping assembly includes a main air pipe and a flow valve arranged on the main air pipe, and the flow valve is electrically connected to the controller so that the flow valve can be adjusted by the controller.

[0007] Preferably, the front scraping assembly also includes an air pump and a jet component connected to the air pump through a main air pipe. The outlet of the jet component is formed as the air outlet of the front scraping assembly, and the jet component has a tapered outlet flow channel connected to the main air pipe. The gas output by the air pump can flow through the main air pipe and the outlet flow channel of the jet component in sequence and then be ejected.

[0008] Preferably, the front scraping assembly further includes a front scraper, one side of which is attached to the front pressure wheel assembly to scrape the soil attached to the front pressure wheel assembly.

[0009] Preferably, the front scraping assembly also includes a front connecting plate connected to the main frame and a front elastic member connected to the front connecting plate. The front elastic member is also connected to the front scraper. One side of the front scraper can be fitted to the front compacting surface of the front pressure wheel assembly under the elastic action of the front elastic member. The front scraper is adjustably arranged relative to the front connecting plate.

[0010] Preferably, the counterweight assembly includes a connecting member, a counterweight block and a first gear arranged on the connecting member, a first rack arranged on the main frame and engaged with the first gear, and a first driving unit driven and connected to the first gear, the first rack extending from the rear pressure wheel assembly in a direction away from the rear pressure wheel assembly, the first gear can be driven by the first driving unit to move along the extension direction of the first rack to drive the counterweight block to move, and the first driving unit is electrically connected to the controller to control the opening and closing through the controller.

[0011] Preferably, the outer cylinder includes a first outer cylinder and a second outer cylinder respectively arranged at both ends of the inner cylinder, and the rear pressure wheel assembly also includes a second rack connected to the first outer cylinder, a third rack connected to the second outer cylinder, a second gear meshed with the second rack and the third rack, and a second driving part driven by the second gear. The second rack and the third rack are arranged opposite to each other, and the two can move toward or away from each other under the drive of the second gear. The second driving part is electrically connected to the controller to control the opening and closing through the controller.

[0012] Preferably, the rear pressure wheel assembly also includes a connecting rod, a first sleeve and a second sleeve slidingly mounted on the connecting rod, a first connecting rod fixedly connected to the first sleeve and a second connecting rod fixedly connected to the second sleeve, the first sleeve is connected to the second rack, the second sleeve is connected to the third rack, the connecting rod is connected to the main frame, the first connecting rod is rotatably connected to the first outer cylinder, the second connecting rod is rotatably connected to the second outer cylinder, and the first sleeve and the second sleeve can be driven to move toward or away from each other along the extension direction of the connecting rod.

[0013] Preferably, the multifunctional soil compacting device also includes a first rear scraping assembly and a second rear scraping assembly, the first rear scraping assembly having a first scraping side attached to the outer surface of the first outer cylinder to clean the soil attached to the outer surface of the first outer cylinder, and the second rear scraping assembly having a second scraping side attached to the outer surface of the second outer cylinder to clean the soil attached to the outer surface of the second outer cylinder.

[0014] Preferably, the first rear scraping assembly is connected to the first sleeve and the first connecting rod, so as to move synchronously with the first outer cylinder under the drive of the first sleeve and the first connecting rod, and the second rear scraping assembly is connected to the second sleeve and the second connecting rod, so as to move synchronously with the second outer cylinder under the drive of the second sleeve and the second connecting rod.

[0015] The present invention adopts the above technical solution, and its beneficial effect is that: the humidity detector detects the humidity of the soil and sends the detected humidity data to the controller, the controller judges the soil humidity according to the humidity data, and adjusts the area of ​​the front scraping assembly, the counterweight assembly and the rear compacting surface according to the humidity. When it is judged that the soil humidity is high, the soil adhered to the front pressure wheel surface of the front pressure wheel assembly is more viscous and in greater quantity, requiring a stronger cleaning force. The controller controls the air outlet of the front scraping assembly to spray a large flow of gas to provide sufficient cleaning force; in addition, the pressure of the rear pressure wheel assembly on the soil needs to be smaller to prevent the rear pressure wheel assembly from sinking into the soil. The controller controls the counterweight assembly to move away from the rear pressure wheel assembly to reduce the pressure applied to the soil by the rear pressure wheel assembly; at the same time, the controller controls the outer cylinder to slide relative to the inner cylinder, increasing the area of ​​the rear compacting surface and reducing the pressure, thereby achieving a balance of forces at the front pressure wheel assembly and the rear pressure wheel assembly and avoiding excessive pressure at the pressure wheel assembly. When it is judged that the soil humidity is low, the viscosity and amount of soil attached to the surface of the front pressure wheel of the front pressure wheel assembly are both small, and a strong cleaning force is not required. The controller controls the air outlet of the front scraping assembly to spray out gas with a small flow rate to save energy. In addition, the pressure of the rear pressure wheel assembly to the soil needs to be greater. The controller controls the counterweight assembly to move in the direction close to the rear pressure wheel assembly to increase the pressure applied to the soil by the rear pressure wheel assembly; at the same time, the controller controls the outer cylinder to slide relative to the inner cylinder, reducing the area of ​​the rear compaction surface and increasing the pressure to meet the compaction requirements. The multifunctional soil compacting device of the present invention can adapt to lands with different humidity levels, has a wide range of applications, and has a self-cleaning function with adjustable cleaning force, making it more convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the multifunctional soil compacting device of the present invention.

[0017] Figure 2 for Figure 1 Schematic diagram of the structure from another perspective.

[0018] Figure 3 for Figure 2 A partial enlarged view of middle A.

[0019] Figure 4 for Figure 1 Schematic diagram of the structure of the front pressure wheel assembly and front scraper assembly of the multifunctional soil compacting device.

[0020] Figure 5 for Figure 4 Schematic diagram of the structure of the middle and front scraping assembly.

[0021] Figure 6 for Figure 5 A partial enlarged view of B.

[0022] Figure 7 for Figure 4 Schematic diagram of the structure of the front scraper, front connecting plate and front elastic member of the middle front scraper assembly.

[0023] Figure 8 for Figure 1 Schematic diagram of the structure of the rear frame, counterweight assembly, rear pressure wheel assembly, first rear scraping assembly and second rear scraping assembly of the multifunctional soil compacting device.

[0024] Figure 9 for Figure 8 Schematic diagram of the structure of the center rear frame and counterweight assembly.

[0025] Figure 10 for Figure 8 Schematic diagram of the structure of the middle counterweight assembly.

[0026] Figure 11 for Figure 8 Schematic diagram of the structure of the middle and rear pressure wheel assembly.

[0027] Figure 12 for Figure 11 A partial enlarged view of C in the middle.

[0028] Figure 13 for Figure 11 Schematic diagram of the structures of the middle and rear pressure wheel assembly, the first rear scraping assembly and the second rear scraping assembly.

[0029] Figure 14 for Figure 13 A partial enlarged view of D in the middle.

[0030] Figure 15 for Figure 11 Schematic diagram of the structure of the second rack, third rack, second gear and second drive part of the middle and rear pressure wheel assembly.

[0031] Figure 16 for Figure 11 Schematic diagram of the structure of the inner and outer cylinders of the middle and rear pressure roller assembly.

[0032] Figure 17 for Figure 11 Schematic diagram of the structure of the inner cylinder, support frame and vibrator of the middle and rear pressure roller assembly.

[0033] In the figure: main frame 10, front frame 11, rear frame 12, horizontal rod 121, oblique rod 122, humidity detector 20, front pressure wheel assembly 40, first pressure wheel 41, second pressure wheel 42, reinforcing plate 43, counterweight assembly 50, connecting member 51, counterweight block 52, first rack 53, first gear 54, first driving part 55, limiting plate 56, rear pressure wheel assembly 60, inner cylinder 61, outer cylinder 62, first outer cylinder 621, first chamfered surface 6211, second outer cylinder 622, second chamfered surface Angle surface 6221, connecting member 63, first sleeve 64, second sleeve 65, first connecting rod 66, second connecting rod 67, second rack 68, third rack 69, second gear 610, second driving part 611, fixing block 612, support frame 613, vibrator 614, front scraping assembly 70, main air pipe 71, flow valve 72, air pump 73, jet part 74, nozzle 741, connecting pipe 742, front scraper 75, avoidance groove 751, first front extension rod 752, front connecting Plate 76, front adjustment hole 761, second front extension rod 762, front elastic member 77, first air pipe 78, second air pipe 79, cleaning brush 710, connecting box 7101, air outlet 71011, bristles 7102, front fixing plate 711, first rear scraping assembly 80, first rear connecting plate 81, first rear adjustment hole 811, second rear extension rod 812, first rear elastic member 82, first rear scraping plate 83, first rear fixing plate 831, first rear soft plate 832, first rear extension rod 833, the first curved rod 84, the first rear nut 85, the second rear scraping assembly 90, the second rear connecting plate 91, the second rear adjusting hole 911, the fourth rear extension rod 912, the second elastic member 92, the second rear scraper 93, the second rear fixing plate 931, the second rear soft plate 932, the third rear extension rod 933, the second curved rod 94, the second rear nut 95, the driver's seat 100, the steering assembly 110, the connecting arm 111, the operating handle 112, the pedal 120, and the driver 130. DETAILED DESCRIPTION

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Please see Figures 1 to 17The embodiment of the present invention provides a multifunctional soil compacting device, including a main frame 10, a humidity detector 20 arranged on the main frame 10, a controller, a front pressure wheel assembly 40, a counterweight assembly 50 and a rear pressure wheel assembly 60, and a front scraping assembly 70 arranged on the front pressure wheel assembly 40. The humidity detector 20 is arranged at the front end of the main frame 10 along the travel direction and is electrically connected to the controller to send the detected humidity data to the controller. The front pressure wheel assembly 40 can be driven to travel along a predetermined path and drive the rear pressure wheel assembly 60 to travel along the same path. The front pressure wheel assembly 40 has a front compacting surface, and the front scraping assembly 70 has an air outlet toward the front compacting surface and can be controlled by the controller to output gas of different flow rates to clean the soil attached to the front compacting surface. The counterweight assembly 50 is movably arranged on the main frame 10 and can be controlled by the controller to change the distance between it and the rear pressure wheel assembly 60. The rear pressure wheel assembly 60 includes an inner cylinder 61 and an outer cylinder 62 arranged outside the inner cylinder 61. The two are coaxial and slidingly matched. The outer surface of the outer cylinder 62 and the outer surface of the inner cylinder 61 exposed to the outside of the outer cylinder 62 form the rear compacting surface. The outer cylinder 62 can be controlled by the controller to slide relative to the inner cylinder 61 to change the area of ​​the rear compacting surface.

[0036] The humidity detector 20 is located at the front end of the main frame 10. When the multifunctional soil compacting device starts to compact the soil, the humidity detector 20 starts to detect the humidity of the soil and sends the detected humidity data to the controller. The controller is preset with soil humidity conditions corresponding to different humidity ranges. Different humidity conditions correspond to the opening degree of the flow valve 72 of the front scraping assembly 70, the number of rotations of the first drive part 55 of the counterweight assembly 50 and the number of rotations of the second drive part 611 of the rear pressure wheel assembly 60. After receiving the temperature data, the controller corresponds to the determined soil humidity condition and adjusts the front scraping assembly 70, the counterweight assembly 50 and the rear pressure wheel assembly 60 according to the soil humidity condition.

[0037] When it is judged that the soil humidity is high, the soil adhered to the front pressure wheel surface of the front pressure wheel assembly 40 is more sticky and has a larger amount, requiring a stronger cleaning force. The controller controls the air outlet of the front scraping assembly 70 to spray out a large flow of gas to provide sufficient cleaning force. In addition, the pressure applied to the soil by the rear pressure wheel assembly 60 needs to be smaller to prevent the rear pressure wheel assembly 60 from sinking into the soil. The controller controls the counterweight assembly 50 to move away from the rear pressure wheel assembly 60 to reduce the pressure applied to the soil by the rear pressure wheel assembly 60. At the same time, the controller controls the outer cylinder 62 to slide relative to the inner cylinder 61 to increase the area of ​​the rear compaction surface and reduce the pressure, thereby achieving a balance of forces between the front pressure wheel assembly 40 and the rear pressure wheel assembly 60 and avoiding excessive pressure at the rear pressure wheel assembly 60. When it is judged that the soil humidity is low, the viscosity and amount of soil attached to the surface of the front pressure wheel of the front pressure wheel assembly 40 are both small, and a strong cleaning force is not required. The controller controls the air outlet of the front scraping assembly 70 to spray out gas with a small flow rate to save energy. In addition, the pressure of the rear pressure wheel assembly 60 on the soil needs to be greater. The controller controls the counterweight assembly 50 to move in the direction close to the rear pressure wheel assembly 60 to increase the pressure applied to the soil by the rear pressure wheel assembly 60; at the same time, the controller controls the outer cylinder 62 to slide relative to the inner cylinder 61, reducing the area of ​​the rear compaction surface and increasing the pressure to meet the compaction requirements. The multifunctional soil compacting device of the present invention can adapt to lands with different humidity levels, has a wide range of applications, and has a self-cleaning function with adjustable cleaning force, making it more convenient to operate.

[0038] The controller may be a single chip microcomputer or other controllable component. The outer cylinder 62 is hollow and is used to accommodate the inner cylinder 61. The inner diameter of the outer cylinder 62 is larger than the outer diameter of the inner cylinder 61, and the gap between the outer cylinder 62 and the inner cylinder 61 is small to prevent soil from entering the gap between the outer cylinder 62 and the inner cylinder 61.

[0039] Please see Figures 4 to 7 Furthermore, the front scraping assembly 70 includes a main air pipe 71 and a flow valve 72 provided on the main air pipe 71 , and the flow valve 72 is electrically connected to the controller so that the flow valve 72 can be adjusted by the controller.

[0040] The controller controls the gas flow output from the main gas pipe 71 to change the cleaning force by controlling the opening and closing degree of the flow valve 72. The flow valve 72 can be a solenoid valve.

[0041] Please continue to see Figures 4 to 7 Furthermore, the front scraping assembly 70 also includes an air pump 73 and a jet component 74 connected to the air pump 73 through the main air pipe 71. The outlet of the jet component 74 is formed as the air outlet of the front scraping assembly 70, and the jet component 74 has a tapered outlet flow channel connected to the main air pipe 71. The gas output by the air pump 73 can flow through the main air pipe 71 and the outlet flow channel of the jet component 74 in sequence and then be ejected.

[0042] A first air pipe 78 connects the main air pipe 71 and the jet element 74. Gas, driven by an air pump 73, sequentially enters the main air pipe 71, the first air pipe 78, and the jet element 74. After flowing through the jet element 74's tapered outlet, the flow rate increases, creating high-pressure gas. This increases the force exerted by the gas blowout and ensures optimal purge efficiency. The jet element 74 includes a connecting pipe 742 connected to the first air pipe 78 and multiple nozzles 741 connected to the connecting pipe 742. The nozzles 741 have elongated outlets to increase the gas purge range.

[0043] Please continue to see Figures 4 to 7 Furthermore, the front scraping assembly 70 also includes a front scraper 75, one side of the front scraper 75 is attached to the front pressure wheel assembly 40 to scrape the soil attached to the front pressure wheel assembly 40.

[0044] During the movement, the front pressure wheel assembly 40 compacts the land it passes through. When the soil moisture in the land is high, the soil becomes sticky. At this time, after the front compacting surface of the front pressure wheel assembly 40 presses over the land, the soil will adhere to the front compacting surface. The front pressure wheel assembly 40 continues to move forward. When the soil attached to the front compacting surface reaches the front scraper 75 of the front scraper assembly 70, the scraper blocks the soil to prevent the soil from continuing to follow the front pressure wheel assembly 40. In other words, the front scraper 75 scrapes off the soil on the front compacting surface. In addition, the front scraper 75 can also always adhere to the front compacting surface in an adjustable manner to ensure that the soil on the front compacting surface can be scraped off to the greatest extent. After the soil on the front pressure wheel assembly 40 falls off, the front compacting surface returns to its original flatness, which will not affect the subsequent land compaction effect. At the same time, the jet element 74 will spray high-pressure gas to sweep away the soil that has not been cleaned by the front scraper 75. The front scraper 75 and the jet element 74 work together to thoroughly clean the soil on the front compaction surface in a step-by-step cleaning manner.

[0045] Please continue to see Figures 4 to 7 Furthermore, the front scraping assembly 70 also includes a front connecting plate 76 connected to the main frame 10 and a front elastic member 77 connected to the front connecting plate 76. The front elastic member 77 is also connected to the front scraper 75. One side of the front scraper 75 can be attached to the front compacting surface of the front pressure wheel assembly 40 under the elastic action of the front elastic member 77. The front scraper 75 is adjustably arranged relative to the front connecting plate 76.

[0046] The front elastic member 77 is always in an extended state, so as to continuously provide force for one side of the front scraper 75 to fit against the front compacting surface. Under the elastic action of the front elastic member 77, one side of the front scraper 75 always fits against the front compacting surface. When one side of the front scraper 75 is worn shorter, the front elastic member 77 shortens under the action of its own elastic force, driving the front scraper 75 to fit against the front compacting surface again, thereby ensuring the scraping effect to the greatest extent.

[0047] Among them, the front elastic member 77 can be a spring. In addition, the front scraping assembly 70 also includes a front fixing plate 711 fixed on the main frame body 10 by bolts, such as Figure 5 As shown, the front fixing plate 711 and the front connecting plate 76 are arranged in parallel, and the two are connected by welding a rod-shaped structure. The front fixing plate 711 is attached to the main frame 10 to increase the contact area between the two, thereby increasing the connection stability.

[0048] An arc-shaped front adjustment hole 761 is provided on the front connecting plate 76, and a second front extension rod 762 protrudes horizontally from the front connecting plate 76. A first front extension rod 752 extends horizontally on the front scraper 75, passing through the front adjustment hole 761 and parallel to the second front extension rod 762. The two ends of the front elastic member 77 are respectively connected to the first front extension rod 752 and the second front extension rod 762. The first front extension rod 752 can move along the front adjustment hole 761 under the elastic action of the front elastic member 77.

[0049] The front adjustment hole 761 is formed as Figure 7 In the illustrated orientation, a concave arc is formed from the upper right to the lower left. One end of the front elastic member 77 is attached to a first front extension rod 752 extending through a front adjustment hole 761, and the other end is attached to a second front extension rod 762 formed on the front connecting plate 76. The front elastic member 77 extends or contracts, driving the first front extension rod 752 to move along the front adjustment hole 761, ensuring that one side of the front scraper 75 is always in contact with the front compacting surface of the front pressure wheel assembly 40.

[0050] In addition, one side of the front scraper 75 is formed of silicone material, so that the front scraper 75 forms soft contact with the front pressure wheel assembly 40, reducing the wear on the front pressure wheel assembly 40, so that the front compacting surface of the front pressure wheel assembly 40 is always flat, ensuring the best compaction effect.

[0051] In some embodiments, the first front extension rod 752 can be a threaded rod, and a nut can be sleeved on the first front extension rod 752, so that the first front extension rod 752 is locked to the front connecting plate 76 by the nut. In addition, the nut can lock the first front extension rod 752 in different positions relative to the front adjustment hole 761, thereby changing the pressure applied by the front scraper 75 to the front pressure wheel assembly 40.

[0052] The front pressure wheel assembly 40 includes a first pressure wheel 41 rotatably arranged relative to the front scraping assembly 70. The surface of the first pressure wheel 41 is formed as a front compacting surface. The fitting line between the front scraper 75 and the first pressure wheel 41 is used as a tangent to form a cross-section of the first pressure wheel 41. The first surface of the front scraper 75 forms an acute angle with the cross-section, and the second surface forms an obtuse angle with the cross-section. The second surface of the front scraper 75 is used to scrape the soil on the first pressure wheel 41 so that the soil can slide down along the second surface of the front scraper 75. Since a triangular area is formed between the first surface of the front scraper 75 and the outer surface of the first pressure wheel 41, the first surface of the front scraper 75 cannot be used for scraping, thereby avoiding soil accumulation in the triangular area. The jet component 74 is arranged in the triangular area. On the one hand, when the soil that is not scraped off by the front scraper 75 follows the first pressure wheel 41 into the triangular area, the high-pressure gas ejected by the jet component 74 can remove the soil for a second time. The jet component 74 cooperates with the front scraper 75 to achieve secondary cleaning to achieve the best cleaning effect; on the other hand, if the soil enters the triangular area, the jet component 74 can eject high-pressure gas to remove the soil in the triangular area to avoid soil accumulation in the triangular area.

[0053] The front pressure wheel assembly 40 includes a reinforcing plate 43 arranged on the surface of the first pressure wheel 41. The reinforcing plate 43 protrudes outside the outline of the first pressure wheel 41. An avoidance groove 751 is formed on the front scraper 75 to allow the reinforcing plate 43 to pass through during the rotation of the first pressure wheel 41.

[0054] The reinforcing plate 43 increases the mass of the first pressure wheel 41. This, on the one hand, increases the pressure exerted on the soil by the first pressure wheel 41, resulting in a better compaction effect; on the other hand, it stabilizes the movement and steering of the first pressure wheel 41. When the first pressure wheel 41 rotates, it drives the reinforcing plate 43 to move. When the reinforcing plate 43 reaches the front scraper 75, it is blocked by the front scraper 75, preventing the first pressure wheel 41 from continuing to rotate. Therefore, an escape groove 751 is provided on the front scraper 75 to allow the reinforcing plate 43 to pass through the escape groove 751 without affecting the continued rotation of the first pressure wheel 41.

[0055] The front scraper assembly 70 also includes a cleaning brush 710 disposed on one side of the avoidance groove 751 to clean dirt adhering to the reinforcing plate 43. As the first pressure roller 41 rotates, the reinforcing plate 43 also contacts the ground under the action of the rotation of the first pressure roller 41, causing dirt to adhere to the reinforcing plate 43. Therefore, the cleaning brush 710 is provided specifically to clean the dirt on the reinforcing plate 43.

[0056] The front scraping assembly 70 also includes a second air pipe 79 connected to the main air pipe 71. The cleaning brush 710 includes a connecting box 7101 and bristles 7102 connected to the connecting box 7101. The connecting box 7101 has a ventilation cavity connected to the second air pipe 79 and an air outlet 71011 connected to the ventilation cavity. One side of the connecting box 7101 faces the first pressure wheel 41, and the bristles 7102 and the air outlet 71011 are both arranged on this side of the connecting box 7101.

[0057] Bristles 7102, which can be made of steel, are used to clean dirt from the reinforcing plate 43. Air outlet 71011 faces the first pressure roller 41. The air ejected from air outlet 71011 can also clean dirt from the reinforcing plate 43, effectively cleaning the bristles 7102. Furthermore, when dirt clings to the bristles 7102, the air ejected from air outlet 71011 can remove the dirt from the bristles 7102.

[0058] The reinforcing plates 43 include a plurality of reinforcing plates 43 spaced apart along the circumference of the first pressing wheel 41 . When the first pressing wheel 41 rotates, each reinforcing plate 43 passes by the cleaning brush 710 in sequence.

[0059] The front pressure roller assembly 40 further includes a second pressure roller 42. The axes of the second pressure roller 42 and the first pressure roller 41 are aligned on the same straight line. The second pressure roller 42 and the first pressure roller 41 are located on opposite sides of the main frame 10 and are both rotatably connected to the main frame 10. The second pressure roller 42 is also provided with a plurality of reinforcing plates 43. The plurality of reinforcing plates 43 are arranged at intervals along the circumference of the second pressure roller 42. The cooperation between the reinforcing plates 43 and the second pressure roller 42 is the same as the cooperation between the reinforcing plates 43 and the first pressure roller 41.

[0060] Specifically, the reinforcing plate 43 is a rectangular plate structure, and multiple identical reinforcing plates 43 are convenient for batch production; on the other hand, multiple reinforcing plates 43 can reduce the use of materials and save costs; on the other hand, multiple reinforcing plates 43 are respectively fixed on the first pressure wheel 41 and the second pressure wheel 42, and each reinforcing plate 43 on the first pressure wheel 41 is fixedly connected to the first pressure wheel 41, and each reinforcing plate 43 on the second pressure wheel 42 is fixedly connected to the second pressure wheel 42, which can increase the stability of the reinforcing plate 43 and avoid the reinforcing plate 43 falling off during the movement of the first pressure wheel 41 and the second pressure wheel 42.

[0061] The reinforcing plate 43 on the first pressure wheel 41 extends axially shorter than the first pressure wheel 41. The reinforcing plate 43 is located on the side of the first pressure wheel 41 facing the second pressure wheel 42. The reinforcing plate 43 on the second pressure wheel 42 extends axially shorter than the second pressure wheel 42. The reinforcing plate 43 is located on the side of the second pressure wheel 42 facing the first pressure wheel 41. The reinforcing plate 43 is located on the side of the first pressure wheel 41 and the second pressure wheel 42 facing each other, i.e., the inner side. This increases the mass of the inner side of the first pressure wheel 41 and the second pressure wheel 42, positioning the center of gravity of the entire multifunctional soil compacting device in the middle. This prevents the front pressure wheel assembly 40 from tipping over due to the greater mass on the outer side during steering, thus ensuring more stable travel and steering of the front pressure wheel assembly 40. Furthermore, when an operator is seated in the driver's seat 100, the first pressure wheel 41 and the second pressure wheel 42 provide sufficient balancing force to prevent the front pressure wheel assembly 40 from tilting.

[0062] In addition, the front scraping assembly 70 includes two front fixing plates 711, two front connecting plates 76, two front elastic members 77, two front scraping plates 75, an air pump 73, two main air pipes 71, two flow valves 72, two first air pipes 78, two jet members 74, two second air pipes 79 and two cleaning brushes 710, wherein the air pump 73 is fixed on the main frame 10, a front fixing plate 711, a front connecting plate 76, a front elastic member 77, a front scraping plate 75, a main air pipe 71, a flow valve 72, A first air pipe 78, an air jet 74, a second air pipe 79 and a cleaning brush 710 are matched with the first pressing wheel 41, another front fixing plate 711, another front connecting plate 76, another front elastic member 77, another front scraper 75, another main air pipe 71, another flow valve 72, another first air pipe 78, another air jet 74, another second air pipe 79 and another cleaning brush 710 are matched with the second pressing wheel 42 in exactly the same way, and form a part matched with the first pressing wheel 41. Figure 4 Symmetrical form shown.

[0063] Furthermore, the counterweight assembly 50 includes a connecting member 51, a counterweight block 52 and a first gear 54 arranged on the connecting member 51, a first rack 53 arranged on the main frame 10 and engaged with the first gear 54, and a first driving unit 55 driven and connected to the first gear 54. The first rack 53 extends from the rear pressure wheel assembly 60 in a direction away from the rear pressure wheel assembly 60. The first gear 54 can be driven by the first driving unit 55 to move along the extension direction of the first rack 53 to drive the counterweight block 52 to move. The first driving unit 55 is electrically connected to the controller to control the opening and closing through the controller.

[0064] The main frame 10 includes a rear frame 12, and a connecting member 51 is used to fix the counterweight 52 and drive the counterweight 52 to move on the rear frame 12. The counterweight 52 is detachably connected to the connecting member 51, and a counterweight 52 of appropriate mass can be selected according to actual needs to change the pressure applied to the ground by the rear pressure wheel assembly 60. Figure 10 As shown, the counterweight 52 is connected to the connecting member 51 via two U-shaped rods. The ends of the U-shaped rods are threaded and inserted into the connecting member 51 and fixed to the connecting member 51 via nuts. Of course, the counterweight 52 can also be detachably connected to the connecting member 51 in other ways. The rear frame 12 is fixed, and the first gear 54 rotates. Through the meshing relationship between the first gear 54 and the first rack 53, the connecting member 51 can move along the extension direction of the first rack 53, thereby driving the counterweight 52 to move.

[0065] The first rack 53 is a tooth formed on the rear frame 12, and it forms an integral structure with the rear frame 12. Of course, the first rack 53 can also be separated from the rear frame 12 and fixed on the rear frame 12. Two limit plates 56 are formed on the rear frame 12. The two limit plates 56 are respectively located at the two ends of the first rack 53. The limit plates 56 are used to limit the movement range of the first gear 54. When the first gear 54 rotates to contact the limit plates 56, the first gear 54 cannot continue to move due to the obstruction of the limit plates 56, thereby preventing the first gear 54 from separating from the first rack 53. The first driving part 55 can be as follows Figure 10 The motor shown is driven by the controller to rotate a certain number of circles, and is also driven to start and stop by the controller. When it is necessary to adjust the distance between the counterweight block 52 and the rear pressure wheel assembly 60, the controller controls the first drive unit 55 to start and rotate forward or reverse a corresponding number of circles.

[0066] The rear frame 12 includes a horizontal rod 121, and the first rack 53 and the counterweight assembly 50 are both formed on the horizontal rod 121. The horizontal rod 121 is arranged horizontally, and the first rack 53 is formed on the horizontal upper surface of the horizontal rod 121, so that the first gear 54 moves on the horizontal plane, and the movement is more stable.

[0067] In addition, the main frame 10 also includes a front frame 11, and the rear frame 12 also includes an oblique rod 122 rotatably connected to the front frame 11. The oblique rod 122 is formed as a whole with the horizontal rod 121, and the two form an angle. The oblique rod 122 is tilted downward from the horizontal rod 121 toward the front frame 11 to facilitate connection with the front frame 11. The axis of the rotational connection between the oblique rod 122 and the front frame 11 is in the vertical direction, so that the rear frame 12 can swing in the horizontal direction relative to the front frame 11, so as to drive the rear frame 12 to turn by the turning of the front frame 11.

[0068] Please see Figures 11 to 17Furthermore, the outer cylinder 62 includes a first outer cylinder 621 and a second outer cylinder 622 respectively arranged on both ends of the inner cylinder 61. The rear pressure wheel assembly 60 also includes a second rack 68 connected to the first outer cylinder 621, a third rack 69 connected to the second outer cylinder 622, a second gear 610 engaged with the second rack 68 and the third rack 69, and a second driving part 611 driven and connected to the second gear 610. The second rack 68 and the third rack 69 are arranged opposite to each other, and the two can move toward or away from each other under the drive of the second gear 610. The second driving part 611 is electrically connected to the controller to control the opening and closing through the controller.

[0069] The teeth of the second rack 68 and the third rack 69 extend in the vertical direction, and the axis of the second gear 610 is in the vertical direction. When the second gear 610 rotates, the second rack 68 and the third rack 69 move toward or away from each other synchronously. Only through one second gear 610, the second rack 68 and the third rack 69 can be driven to move at the same time, and the driving structure is simpler and the driving method is more convenient.

[0070] The second driving unit 611 may be as follows: Figure 15 The motor shown is driven by the controller to rotate forward or reverse the number of revolutions, and is also driven to start and stop by the controller.

[0071] To increase the area of ​​the rear compacting surface, the controller controls the second drive unit 611 to rotate forward a corresponding number of times, causing the first outer cylinder 621 to slide relative to the inner cylinder 61 away from the second outer cylinder 622, and the second outer cylinder 622 to slide relative to the inner cylinder 61 away from the first outer cylinder 621. To decrease the area of ​​the rear compacting surface, the controller controls the second drive unit 611 to rotate backward a corresponding number of times, causing the first outer cylinder 621 to slide relative to the inner cylinder 61 toward the second outer cylinder 622, and the second outer cylinder 622 to slide relative to the inner cylinder 61 toward the first outer cylinder 621. The arrangement of the first and second outer cylinders 621, 622 allows for a wider range of adjustment for the area of ​​the rear compacting surface and prevents uneven force on the rear pressure roller assembly 60 due to a single outer cylinder 62. Furthermore, the first and second outer cylinders 621, 622 move synchronously, and their distances from the centerline of the inner cylinder 61 are the same, ensuring the balance of the rear pressure roller assembly 60 during movement.

[0072] An inclined annular first chamfered surface 6211 is formed on one end of the first outer tube 621 facing the second outer tube 622 , and an inclined annular second chamfered surface 6221 is formed on one end of the second outer tube 622 facing the first outer tube 621 .

[0073] This arrangement creates a trapezoidal shape on the soil pressed by the inner cylinder 61, rather than a rectangular shape. This prevents the compacted soil from forming any obtrusive rectangular protrusions. Furthermore, the area of ​​these trapezoidal protrusions is smaller than that of the rectangular protrusions, minimizing their impact on overall soil compaction. The reduced thickness of the first and second outer cylinders 621, 622 results in a low height on the trapezoidal protrusions formed on the post-compaction surface. This height is determined to avoid the need to clean the trapezoidal protrusions.

[0074] Please see Figure 11 、 Figure 13 、 Figures 15 to 17 Furthermore, the rear pressure wheel assembly 60 also includes a connecting rod 63, a first sleeve 64 and a second sleeve 65 slidingly mounted on the connecting rod 63, a first link 66 fixedly connected to the first sleeve 64, and a second link 67 fixedly connected to the second sleeve 65, the first sleeve 64 is connected to the second rack 68, the second sleeve 65 is connected to the third rack 69, the connecting rod 63 is connected to the main frame 10, the first link 66 is rotatably connected to the first outer cylinder 621, the second link 67 is rotatably connected to the second outer cylinder 622, the first sleeve 64 and the second sleeve 65 can be driven to move toward or away from each other along the extension direction of the connecting rod 63 to change the area of ​​the rear compaction surface.

[0075] The connecting rod 63 is horizontally arranged and located below the rear frame 12. The first sleeve 64 and the second sleeve 65 are located at both ends of the connecting rod 63. The connecting rod 63 is fixed relative to the rear frame 12. The first sleeve 64 and the second sleeve 65 slide along the connecting rod 63, driving the first connecting rod 66 and the second connecting rod 67 to move, and further driving the first outer cylinder 621 and the second outer cylinder 622 to move. Figure 13 As shown, the first connecting rod 66 is an "L"-shaped rod, the vertical section of which is fixedly connected to the first outer cylinder 621, and the horizontal section of which penetrates into the interior of the first outer cylinder 621, as shown in FIG. Figure 17 As shown, the middle position of the support frame 613 inside the inner cylinder 61 is formed as a sleeve, and the horizontal section of the first connecting rod 66 penetrates into the sleeve and slides with the sleeve. When the first connecting rod 66 drives the first outer cylinder 621 to move, the horizontal section of the first connecting rod 66 slides in the sleeve of the support frame 613; similarly, the second connecting rod 67 is also an "L"-shaped rod, whose vertical section is fixedly connected to the second outer cylinder 622, and its horizontal section penetrates into the interior of the second outer cylinder 622 and into the sleeve of the support frame 613, and slides with the sleeve. When the second connecting rod 67 drives the second outer cylinder 622 to move, the horizontal section of the second connecting rod 67 slides in the sleeve of the support frame 613, ensuring that the movement of the first outer cylinder 621 and the second outer cylinder 622 can be smoothly driven by the first connecting rod 66 and the second connecting rod 67 to move relative to the inner cylinder 61. A pedal 120 is fixed to the vertical section of the first connecting rod 66 and the vertical section of the second connecting rod 67 respectively.

[0076] In addition, if Figure 17 As shown, the inner cylinder 61 is hollow and supported by a support frame 613. The support frame 613 includes a sleeve coaxial with the inner cylinder 61 and support rods radially arranged along the circumference of the sleeve to ensure that the inner cylinder 61 has sufficient supporting force.

[0077] The rear pressure wheel assembly 60 also includes a fixed block 612 connected to the connecting rod 63, and a sliding groove is formed inside the fixed block 612. The second gear 610 is rotatably connected to the fixed block 612 and is located in the sliding groove. The second rack 68 and the third rack 69 are passed through the sliding groove and are slidingly connected to the fixed block 612. The sliding direction of the second rack 68 relative to the fixed block 612 is the same as the sliding direction of the first outer cylinder 621 relative to the inner cylinder 61, and the second rack 68 slides synchronously with the first outer cylinder 621. The sliding direction of the third rack 69 relative to the fixed block 612 is the same as the sliding direction of the second outer cylinder 622 relative to the inner cylinder 61, and the third rack 69 slides synchronously with the second outer cylinder 622.

[0078] The fixing block 612 is fixed to the rear frame 12 and is used to connect the rear pressure wheel assembly 60 to the rear frame 12, increasing the stability of the two. The fixing block 612 is a hollow cube with two open sides in the direction of extension of the connecting rod 63 and the other two sides closed. The center of the second gear 610 is fixed to the bottom end of a vertical rod and is located below the rear frame 12. The vertical rod passes vertically through the rear frame 12 and is rotatably connected to the rear frame 12. The second drive unit 611 is fixed to the top end of the vertical rod and is located above the rear frame 12, making it easy for the operator to operate.

[0079] Please see Figure 11 and Figure 13 Furthermore, the multifunctional soil compacting device also includes a first rear scraping assembly 80 and a second rear scraping assembly 90. The first rear scraping assembly 80 has a first scraping side that is attached to the outer surface of the first outer cylinder 621 to clean the soil attached to the outer surface of the first outer cylinder 621. The second rear scraping assembly 90 has a second scraping side that is attached to the outer surface of the second outer cylinder 622 to clean the soil attached to the outer surface of the second outer cylinder 622.

[0080] When the soil in the land is very sticky, the rear compaction surface of the rear pressure wheel assembly 60 will stick to the soil. Therefore, a first rear scraping assembly 80 and a second rear scraping assembly 90 are provided to scrape the soil attached to the outer surface of the first outer cylinder 621 and the outer surface of the second outer cylinder 622 respectively to ensure the flatness of the rear compaction surface, thereby ensuring the best compaction effect.

[0081] Please see Figure 11 and Figure 13Furthermore, the first rear scraping assembly 80 is connected to the first sleeve 64 and the first connecting rod 66, so as to move synchronously with the first outer cylinder 621 under the drive of the first sleeve 64 and the first connecting rod 66, and the second rear scraping assembly 90 is connected to the second sleeve 65 and the second connecting rod 67, so as to move synchronously with the second outer cylinder 622 under the drive of the second sleeve 65 and the second connecting rod 67.

[0082] The first rear scraping assembly 80 includes a first rear connecting plate 81 connected to the first connecting rod 66, a first curved rod 84 connected to the first outer cylinder 621, a first rear scraping plate 83 connected to the first rear connecting plate 81 and the first curved rod 84, and a first rear elastic member 82 connected to the first rear connecting plate 81 and the first rear scraping plate 83. The curvature of the first curved rod 84 is the same as that of the first outer cylinder 621, so as to connect the first rear scraping plate 83 to the first outer cylinder 621 while avoiding obstructing the rotation of the first outer cylinder 621. A curved first rear adjustment hole 811 is formed on the first rear connecting plate 81. The first rear adjustment hole 811 is formed Figure 12 The concave arc runs from the upper left to the lower right in the orientation shown. The line of contact between the first rear scraper 83 and the first outer cylinder 621 forms a tangent to the first outer cylinder 621. The first surface of the first rear scraper 83 forms an acute angle with this tangent, while the second surface forms an obtuse angle with this tangent. The second surface of the first rear scraper 83 is used to scrape soil from the outer surface of the first outer cylinder 621, allowing soil to slide down the second surface. Because a triangular area is formed between the first surface of the first rear scraper 83 and the outer surface of the first outer cylinder 621, the first surface of the first rear scraper 83 cannot be used for scraping, preventing soil from accumulating within this triangular area. As the first outer cylinder 621 moves, the first curved rod 84 drives the entire first rear scraper assembly 80 to move synchronously with the first outer cylinder 621, ensuring that the first rear scraper assembly 80 can always scrape soil from the outer surface of the first outer cylinder 621 regardless of its position.

[0083] The first rear scraper 83 includes a first rear fixing plate 831 connected to the first rear connecting plate 81 and a first rear soft plate 832 fixed to the first rear fixing plate 831 by bolts and nuts. The first rear soft plate 832 can be made of silicone material, so that the first rear scraper 83 forms a soft contact with the first outer cylinder 621, reducing the wear on the first outer cylinder 621, so that the outer surface of the first outer cylinder 621 is always flat, and thus the rear compacting surface of the rear pressure wheel assembly 60 is always flat, ensuring the best compaction effect. The side of the first rear soft plate 832 facing away from the first rear fixing plate 831 is in contact with the outer surface of the first outer cylinder 621. The first rear fixing plate 831 extends horizontally toward the side of the first rear connecting plate 81 to have a first rear extension rod 833 passing through the first rear adjustment hole 811. The side of the first rear connecting plate 81 facing away from the first rear scraper 83 is extended with a second rear extension rod 812 parallel to the first rear extension rod 833. The first rear elastic member 82 can be a spring, one end of the first rear elastic member 82 is hung on the first rear extension rod 833 passing through the first rear adjustment hole 811, and the other end is hung on the second rear extension rod 812. The first rear elastic member 82 can extend or contract, driving the first rear extension rod 833 to move along the first rear adjustment hole 811, so that one side of the first rear scraper 83 can always be in contact with the outer surface of the first outer cylinder 621. Furthermore, when one side of the first rear scraper 83 is worn and shortened, the first rear elastic member 82 can use its own elastic force to change the position of the first rear extension rod 833 relative to the first rear adjustment hole 811, so that the shortened first rear scraper 83 can still be in contact with the outer surface of the first outer cylinder 621. The first rear extension rod 833 is formed at the lower portion of the first rear scraper 83, and a rotating shaft extends from the upper portion of the first rear scraper 83, which is rotatably connected to the first rear connecting plate 81.

[0084] In some embodiments, the first rear extension rod 833 can be a threaded rod, on which the first rear nut 85 can be screwed, and the first rear extension rod 833 is locked on the first rear connecting plate 81 through the first rear nut 85. In addition, the first rear nut 85 can lock the first rear extension rod 833 in different positions relative to the first rear adjustment hole 811, and can change the pressure applied by the first rear scraper 83 to the first outer cylinder 621.

[0085] The second rear scraping assembly 90 includes a second rear connecting plate 91 connected to the second connecting rod 67, a second curved rod 94 connected to the second outer cylinder 622, a second rear scraping plate 93 connected to the second rear connecting plate 91 and the second curved rod 94, and a second rear elastic member 92 connected to the second rear connecting plate 91 and the second rear scraping plate 93. The curvature of the second curved rod 94 is the same as that of the second outer cylinder 622, so as to connect the second rear scraping plate 93 to the second outer cylinder 622 while avoiding obstruction of the rotation of the second outer cylinder 622. A curved second rear adjustment hole 911 is formed on the second rear connecting plate 91. The second rear adjustment hole 911 is formed Figure 14The concave arc runs from the upper right to the lower left in the orientation shown. The line of contact between the second rear scraper 93 and the second outer cylinder 622 forms a tangent to the second outer cylinder 622. The first surface of the second rear scraper 93 forms an acute angle with this tangent, while the second surface forms an obtuse angle with this tangent. The second surface of the second rear scraper 93 is used to scrape soil from the outer surface of the second outer cylinder 622, allowing soil to slide down the second surface of the second rear scraper 93. Because a triangular area is formed between the first surface of the second rear scraper 93 and the outer surface of the second outer cylinder 622, the first surface of the second rear scraper 93 cannot be used for scraping, preventing soil from accumulating within this triangular area. As the second outer cylinder 622 moves, the second curved rod 94 drives the entire second rear scraper assembly 90 to move synchronously with the second outer cylinder 622, ensuring that the second rear scraper assembly 90 can always scrape soil from the outer surface of the second outer cylinder 622 regardless of its position.

[0086] The second rear scraper 93 includes a second rear fixing plate 931 connected to the second rear connecting plate 91 and a second rear soft plate 932 fixed to the second rear fixing plate 931 by bolts and nuts. The second rear soft plate 932 can be made of silicone material, so that the second rear scraper 93 forms soft contact with the second outer cylinder 622, reducing the wear on the second outer cylinder 622, so that the outer surface of the second outer cylinder 622 is always flat, and thus the rear compacting surface of the rear pressure wheel assembly 60 is always flat, ensuring the best compaction effect. The side of the second rear soft plate 932 facing away from the second rear fixing plate 931 is in contact with the outer surface of the second outer cylinder 622. The second rear fixing plate 931 extends horizontally toward the side of the second rear connecting plate 91 to have a third rear extension rod 933 passing through the second rear adjustment hole 911. The side of the second rear connecting plate 91 facing away from the second rear scraper 93 is extended with a fourth rear extension rod 912 parallel to the third rear extension rod 933. The second rear elastic member 92 can be a spring. One end of the second rear elastic member 92 is hung on the third rear extension rod 933 passing through the second rear adjustment hole 911, and the other end is hung on the fourth rear extension rod 912. The extension or contraction of the second rear elastic member 92 can drive the third rear extension rod 933 to move along the second rear adjustment hole 911, so that one side of the second rear scraper 93 can always be in contact with the outer surface of the second outer cylinder 622. Moreover, when one side of the second rear scraper 93 is worn and shortened, the second rear elastic member 92 can change the position of the third rear extension rod 933 relative to the second rear adjustment hole 911 through its own elastic force, so that the shortened second rear scraper 93 can still be in contact with the outer surface of the second outer cylinder 622. The third rear extension rod 933 is formed at the lower portion of the second rear scraper 93, and a rotating shaft extends from the upper portion of the second rear scraper 93 and is rotatably connected to the second rear connecting plate 91.

[0087] In some embodiments, the third rear extension rod 933 can be a threaded rod, on which the second rear nut 95 can be screwed, and the third rear extension rod 933 is locked on the second rear connecting plate 91 by the second rear nut 95. In addition, the second rear nut 95 can lock the third rear extension rod 933 in different positions relative to the second rear adjustment hole 911, and can change the pressure applied by the second rear scraper 93 to the second outer cylinder 622.

[0088] The rear pressure wheel assembly 60 further includes a vibrator 614 disposed inside the inner cylinder 61 , and the vibrator 614 is fixed on the inner wall of the inner cylinder 61 .

[0089] When the vibrator 614 is activated, it vibrates the inner cylinder 61, which in turn vibrates the first and second outer cylinders 621, 622, shaking off any soil adhering to them. This, in conjunction with the first and second rear scraper assemblies 80, 90, cleans the soil from the first and second outer cylinders 621, 622, achieving optimal cleaning results. It should be noted that the volume and material of the inner and outer cylinders 61, 62 ensure sufficient mass to generate sufficient pressure to compact the soil, preventing any ineffective compaction due to the hollow interior.

[0090] The minimum axial length of the inner and outer cylinders 61 and 62 is greater than or equal to the sum of the distance between the first and second pressure rollers 41, the axial length of the reinforcing plate 43 on the first pressure roller 41, and the axial length of the reinforcing plate 43 on the second pressure roller 42, so that the travel path of the reinforcing plate 43 is repeated through the inner and outer cylinders 61 and 62. Because the reinforcing plate 43 on the first pressure roller 41 protrudes from the outer surface of the first pressure roller 41, and the reinforcing plate 43 on the second pressure roller 42 protrudes from the outer surface of the second pressure roller 42, the reinforcing plate 43 will press the soil into a rectangular groove during the movement of the first and second pressure rollers 41 and 42, resulting in uneven soil. Therefore, the minimum axial length of the inner and outer cylinders 61 and 62 is set to the aforementioned length. After the reinforcing plate 43 passes through the soil, the inner and outer cylinders 61 and 62 can press through the rectangular groove formed by the reinforcing plate 43, eliminating the rectangular groove and achieving smooth soil.

[0091] The soil compacting device also includes a driver's seat 100, a steering assembly 110 connected to the front pressure wheel assembly 40, and a pedal 120 connected to the main frame 10. The operating end of the steering assembly 110 is located on the front side of the driver's seat 100 to change the travel direction of the front pressure wheel assembly 40 through the steering assembly 110. The steering assembly 110 is connected between the first pressure wheel 41 and the second pressure wheel 42. The pedal 120 has a treading surface for the foot to step on, and the treading surface faces the driver's seat 100.

[0092] When the land needs to be leveled and compacted, the operator sits in the driver's seat 100 and controls the direction of travel of the front pressure wheel assembly 40 through the steering assembly 110. The front pressure wheel assembly 40 drives the rear pressure wheel assembly 60 to move in the direction of travel determined by the steering assembly 110. During the movement, the first pressure wheel 41 and the second pressure wheel 42 of the front pressure wheel assembly 40 and the inner cylinder 61 and the outer cylinder 62 of the rear pressure wheel assembly 60 compact the land. The front pressure wheel assembly 40 and the rear pressure wheel assembly 60 drive the operator sitting in the driver's seat 100 forward during the process of compacting the ground. The operator sits in the driver's seat 100 and uses a driving method to operate the steering assembly 110, which makes the operation more convenient.

[0093] The front pressure wheel assembly 40 is connected to a driver 130, which drives the first pressure wheel 41 and the second pressure wheel 42 to rotate. The driver 130 can be a combination of a motor and a transmission assembly. In some embodiments, the steering assembly 110 and the driver 130 can be the same as the steering component and the drive component of a tractor, respectively.

[0094] The pedal 120 is used for the operator sitting on the driver's seat 100 to step on. On the one hand, it can facilitate the operator to apply force to the steering assembly 110, thereby quickly and flexibly achieving the steering of the front pressure wheel assembly 40; on the other hand, the pedal 120 can share the force applied by the operator to the driver's seat 100 and enable the operator to sit more stably on the driver's seat 100. There are two pedals 120, each corresponding to the operator's feet. On the stepping surface of the pedal 120, there are multiple anti-slip protrusions for increasing the friction between the pedal 120 and the operator's feet, so that the operator can step on the pedal 120 more stably.

[0095] The front pressure wheel assembly 40 is connected to the front frame 11 of the main frame 10, and the rear pressure wheel assembly 60 and the driver's seat 100 are connected to the rear frame 12 of the main frame 10. The steering assembly 110 includes a connecting arm 111 connected to the front frame 11 and an operating handle 112 connected to the connecting arm 111. The operating handle 112 forms the operating end of the steering assembly 110. The operating handle 112 can be driven to change the travel direction of the front pressure wheel assembly 40 through the connecting arm 111. When the operator rotates the operating handle 112, the operating handle 112 transmits force to the connecting arm 111, and then transmits force to the front pressure wheel assembly 40 through the connecting arm 111, driving the front pressure wheel assembly 40 to achieve steering. The steering force of the front pressure wheel assembly 40 is transmitted to the front frame 11 of the main frame 10. The front frame 11 moves with the front pressure wheel assembly 40, driving the rear frame 12 to move, and then driving the rear pressure wheel assembly 60 and the driver's seat 100 to move through the rear frame 12, thereby changing the travel direction of the entire multifunctional soil compacting device. The hinged connection between the front frame 11 and the rear frame 12 is used to reduce the offset generated during the steering process to improve the steering performance. The connecting arm 111 and the front frame 11 are connected between the first pressure wheel 41 and the second pressure wheel 42. The connecting arm 111 can be directly connected to the front frame 11.

[0096] When the device is in use, the operator sits on the driver's seat 100, steps on the pedal 120, holds the operating handle 112 of the steering assembly 110, and starts the driver 130. The driver 130 drives the first pressure wheel 41 and the second pressure wheel 42 of the front pressure wheel assembly 40 to rotate, so that the front pressure wheel assembly 40 moves forward, and at the same time drives the rear pressure wheel assembly 60 and the operator on the driver's seat 100 to move forward together.

[0097] The humidity detector 20 detects the soil moisture in the land and sends the humidity data to the controller. The controller determines the soil moisture condition based on the humidity data, and adjusts the opening of the flow valve 72 accordingly to adjust the gas flow, and adjusts the number of forward or reverse rotations of the first drive unit 55 accordingly to adjust the distance of the counterweight block 52 relative to the rear pressure wheel assembly 60, and then adjusts the pressure of the rear pressure wheel assembly 60 compacted to the ground, and then adjusts the number of forward or reverse rotations of the second drive unit 611 accordingly to adjust the area of ​​the rear compaction surface of the rear pressure wheel assembly 60.

[0098] During travel, the first and second rollers 41, 42 of the front roller assembly 40 and the inner and outer rollers 61, 62 of the rear roller assembly 60 compact and level the ground. To change the direction of travel, the operator turns the operating handle 112, which drives the front roller assembly 40 via the connecting arm 111, and then drives the rear roller assembly 60 via the main frame 10 to achieve a turn.

[0099] The above disclosure is only a preferred embodiment of the present invention, and it is certainly not intended to limit the scope of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A multifunctional soil compacting device, characterized in that: The invention comprises a main frame, a humidity detector arranged on the main frame, a controller, a front pressure wheel assembly, a counterweight assembly and a rear pressure wheel assembly, and a front scraping assembly arranged on the front pressure wheel assembly. The humidity detector is arranged at the front end of the main frame along the direction of travel and is electrically connected to the controller to send the detected humidity data to the controller. The front pressure wheel assembly can be driven to travel along a predetermined path and drive the rear pressure wheel assembly to travel along the same path. The front pressure wheel assembly has a front compacting surface. The front scraping assembly has an air outlet facing the front compacting surface and can be controlled by the controller to output gas with different flow rates to clean the soil attached to the front compacting surface. The counterweight assembly is movably arranged on the main frame and can be controlled by the controller to change the distance between it and the rear pressure wheel assembly. The rear pressure wheel assembly includes an inner cylinder and an outer cylinder arranged outside the inner cylinder. The two are coaxial and slidingly matched. The outer surface of the outer cylinder and the outer surface of the inner cylinder exposed outside the outer cylinder form the rear compacting surface. The outer cylinder can be controlled by the controller to slide relative to the inner cylinder to change the area of ​​the rear compacting surface.

2. The multifunctional soil compacting device according to claim 1, characterized in that: The front scraping assembly includes a main air pipe and a flow valve arranged on the main air pipe. The flow valve is electrically connected to a controller so that the flow valve can be adjusted by the controller.

3. The multifunctional soil compacting device according to claim 2, characterized in that: The front scraping assembly also includes an air pump and a jet component connected to the air pump through a main air pipe. The outlet of the jet component is formed as the air outlet of the front scraping assembly, and the jet component has a tapered outlet flow channel connected to the main air pipe. The gas output by the air pump can flow through the main air pipe and the outlet flow channel of the jet component in sequence and then be ejected.

4. The multifunctional soil compacting device according to claim 3, characterized in that: The front scraping assembly also includes a first scraper, one side of which is attached to the front pressure wheel assembly to scrape the soil attached to the front pressure wheel assembly.

5. The multifunctional soil compacting device according to claim 4, characterized in that: The front scraping assembly also includes a first connecting plate connected to the main frame and a first elastic member connected to the first connecting plate. The first elastic member is also connected to the first scraper. One side of the first scraper can be attached to the front compacting surface of the front pressure wheel assembly under the elastic action of the first elastic member. The first scraper is adjustably arranged relative to the first connecting plate.

6. The multifunctional soil compacting device according to claim 1, characterized in that: The counterweight assembly includes a connecting member, a counterweight block and a first gear arranged on the connecting member, a first rack arranged on the main frame and meshed with the first gear, and a first driving unit driven and connected to the first gear. The first rack extends from the rear pressure wheel assembly in a direction away from the rear pressure wheel assembly. The first gear can be driven by the first driving unit to move along the extension direction of the first rack to drive the counterweight block to move. The first driving unit is electrically connected to the controller to control the opening and closing through the controller.

7. The multifunctional soil compacting device according to claim 1, characterized in that: The outer cylinder includes a first outer cylinder and a second outer cylinder respectively arranged at both ends of the inner cylinder. The rear pressure wheel assembly also includes a second rack connected to the first outer cylinder, a third rack connected to the second outer cylinder, a second gear meshed with the second rack and the third rack, and a second driving part driven by the second gear. The second rack and the third rack are arranged opposite to each other, and the two can move toward or away from each other under the drive of the second gear. The second driving part is electrically connected to the controller to control the opening and closing through the controller.

8. The multifunctional soil compacting device according to claim 1, characterized in that: The rear pressure wheel assembly also includes a connecting rod, a first sleeve and a second sleeve slidingly mounted on the connecting rod, a first connecting rod fixedly connected to the first sleeve and a second connecting rod fixedly connected to the second sleeve, the first sleeve is connected to the second rack, the second sleeve is connected to the third rack, the connecting rod is connected to the main frame, the first connecting rod is rotatably connected to the first outer cylinder, the second connecting rod is rotatably connected to the second outer cylinder, and the first sleeve and the second sleeve can be driven to move toward or away from each other along the extension direction of the connecting rod.

9. The multifunctional soil compacting device according to claim 7, characterized in that: The multifunctional soil compacting device also includes a first rear scraping assembly and a second rear scraping assembly. The first rear scraping assembly has a first scraping side that is attached to the outer surface of the first outer cylinder to clean the soil attached to the outer surface of the first outer cylinder. The second rear scraping assembly has a second scraping side that is attached to the outer surface of the second outer cylinder to clean the soil attached to the outer surface of the second outer cylinder.

10. The multifunctional soil compacting device according to claim 1, characterized in that: The first rear scraping assembly is connected to the first sleeve and the first connecting rod, so as to move synchronously with the first outer cylinder under the drive of the first sleeve and the first connecting rod, and the second rear scraping assembly is connected to the second sleeve and the second connecting rod, so as to move synchronously with the second outer cylinder under the drive of the second sleeve and the second connecting rod.

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