Self-cleaning land compaction device

Abstract

A self-cleaning land compaction device, relating to the field of compaction equipment technology, includes a main frame, a front compaction roller assembly mounted on the main frame, and a first scraping assembly mounted on the front compaction roller assembly. During the movement of the front compaction roller assembly, its first compaction surface compacts the land. When the soil moisture is high, soil adheres to the first compaction surface. The first scraping side of the first scraping assembly blocks the soil on the first compaction surface and scrapes it off. Furthermore, the first scraping side can be adjusted to always adhere to the first compaction surface to ensure optimal scraping effect. During the compaction process of the front compaction roller assembly, the adhering soil is continuously scraped off by the first scraping assembly, ensuring the flatness of the first compaction surface and thus guaranteeing the subsequent land compaction effect.

Description

Technical Field

[0001] This utility model relates to the field of compaction equipment technology, specifically to a self-cleaning land compaction device. Background Technology

[0002] When raising seedlings, the land needs to be leveled and compacted first, and then a ground cover should be laid. When the soil moisture is high, soil will stick to the surface of the compaction roller, which will reduce the flatness of the roller surface and affect the subsequent compaction effect. Summary of the Invention

[0003] In view of this, it is necessary to provide a self-cleaning land compaction device with a self-cleaning function, which removes the soil attached to the front compaction roller assembly during its movement, thus ensuring the subsequent land compaction effect.

[0004] A self-cleaning land compaction device includes a main frame, a front pressure roller assembly mounted on the main frame, and a first scraping assembly mounted on the front pressure roller assembly. The front pressure roller assembly can be driven to travel along a predetermined path. The front pressure roller assembly has a first compaction surface. The first scraping assembly has a first scraping side that conforms to the first compaction surface to scrape the soil adhering to the first compaction surface. The first scraping side is adjustablely mounted on the first compaction surface. The first scraping assembly also has an air outlet facing the first compaction surface to spray gas to clean the soil adhering to the first compaction surface.

[0005] Preferably, the first cleaning and scraping assembly includes a first connecting plate connected to the main frame, a first elastic member connected to the first connecting plate, and a first scraper connected to the first connecting plate via the first elastic member, so that it can conform to the first compaction surface of the front pressure roller assembly under the elastic action of the first elastic member. The first scraper is adjustable relative to the first connecting plate, and one side of the first scraper is formed as a first cleaning and scraping side.

[0006] Preferably, an arc-shaped first adjustment hole is formed on the first connecting plate, and a first connecting rod extending from the side of the first scraper passes through the first adjustment hole. The first connecting rod is connected to the first elastic member, and the first connecting rod can move along the first adjustment hole under the elastic action of the first elastic member.

[0007] Preferably, the first cleaning assembly further includes an air pump, a first air pipe, and an air jet component connected in sequence. The outlet of the air jet component is formed as an air outlet on the first cleaning side, and the air jet component has a gradually narrowing air outlet channel connected to the first air pipe. The gas output by the air pump can flow through the first air pipe and the air outlet channel of the air jet component in sequence before being ejected.

[0008] Preferably, the front pressure roller assembly includes a first pressure roller rotatably disposed relative to the first scraping assembly and a reinforcing member disposed on the surface of the first pressure roller. The surface of the first pressure roller is formed as a first compaction surface of the front pressure roller assembly. The reinforcing member protrudes beyond the contour of the first pressure roller. An avoidance groove is formed on the first scraper to allow the reinforcing member to pass through during the rotation of the first pressure roller.

[0009] Preferably, the first cleaning assembly further includes a cleaning brush disposed on one side of the clearance groove to clean soil adhering to the reinforcing member.

[0010] Preferably, the first cleaning assembly further includes a second air pipe connected to the air pump, and the cleaning brush includes a connecting box and bristles connected to the connecting box. The connecting box has an air vent connected to the second air pipe and an air outlet connected to the air vent. One side of the connecting box faces the first pressure roller, and the bristles and the air outlet are both located on this side of the connecting box.

[0011] Preferably, the reinforcing component includes a plurality of reinforcing plates spaced apart circumferentially along the first pressure roller, and each reinforcing plate passes through the cleaning brush in sequence when the first pressure roller rotates.

[0012] Preferably, the self-cleaning land compaction device further includes a rear roller assembly mounted on the main frame and a second scraping assembly mounted on the rear roller assembly. The rear roller assembly can be driven by the front roller assembly to travel along the same path. The rear roller assembly has a second compaction surface. The second scraping assembly has a second scraping side that conforms to the second compaction surface to scrape the soil adhering to the second compaction surface. The second scraping side is adjustablely mounted on the second compaction surface to change the pressure it applies to the second compaction surface.

[0013] Preferably, the rear pressure roller assembly includes a third pressure roller and a vibrator. The surface of the third pressure roller forms the second compaction surface of the rear pressure roller assembly, and an installation cavity is formed inside the third pressure roller. The vibrator is fixed to the cavity wall of the installation cavity.

[0014] The present invention employs the above-mentioned technical solution, and its beneficial effects are as follows: During the movement of the front compaction roller assembly, its first compaction surface compacts the soil. When the soil moisture is high, the soil will adhere to the first compaction surface. The first scraping side of the first scraping assembly can block the soil on the first compaction surface and scrape it off. Furthermore, the first scraping side can be adjusted to always adhere to the first compaction surface to ensure optimal scraping effect. During the compaction process of the front compaction roller assembly, the soil adhering to it can be continuously scraped off by the first scraping assembly, ensuring the flatness of the first compaction surface and thus ensuring the subsequent soil compaction effect. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the structure of the self-cleaning land compaction device of this utility model.

[0016] Figure 2 for Figure 1 A schematic diagram of the front roller assembly and the first scraping assembly of the self-cleaning land compaction device.

[0017] Figure 3 for Figure 1 A schematic diagram of the first cleaning component of the self-cleaning land compaction device.

[0018] Figure 4 for Figure 3 A magnified view of part A in the image.

[0019] Figure 5 for Figure 3 A structural diagram from another perspective.

[0020] Figure 6 for Figure 3 A schematic diagram of the structure of the first elastic element, the first scraper, and the first connecting rod of the first cleaning and scraping assembly.

[0021] Figure 7 for Figure 1 A schematic diagram of the rear roller assembly and the second cleaning assembly of the self-cleaning land compaction device.

[0022] Figure 8 for Figure 1 A schematic diagram of the second cleaning component of the self-cleaning land compaction device.

[0023] Figure 9 for Figure 7 A schematic diagram of the third pressure roller and vibrator in the middle and rear pressure roller assembly.

[0024] Figure 10 for Figure 1 A schematic diagram of the structure of the self-cleaning land compaction device after removing the front roller assembly, rear roller assembly, first cleaning assembly, and second cleaning assembly.

[0025] In the diagram: Main frame 10, front frame 11, rear frame 12, front pressure roller assembly 20, first pressure roller 21, second pressure roller 22, reinforcing component 23, reinforcing plate 231, rear pressure roller assembly 30, third pressure roller 31, connecting frame 32, vibrator 33, driver's seat 40, steering assembly 50, connecting arm 51, operating handle 52, pedal 60, first cleaning assembly 70, first connecting plate 71, first adjusting hole 711, first elastic element 72, first scraper 73, clearance groove 731, first... Connecting rod 74, air pump 75, first air pipe 76, jet component 77, nozzle 771, connecting pipe 772, cleaning brush 78, connecting box 781, air outlet 7811, brush bristles 782, second air pipe 79, valve 710, first fixing plate 711, main air pipe 712, second cleaning and scraping assembly 80, second connecting plate 81, second adjusting hole 811, second elastic component 82, second scraper 83, second fixing plate 831, flexible plate 832, second connecting rod 84, driver 90. Detailed Implementation

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Please refer to Figures 1 to 10 This utility model provides a self-cleaning land compaction device, including a main frame 10, a front pressure roller assembly 20 disposed on the main frame 10, and a first scraping assembly 70 disposed on the front pressure roller assembly 20. The front pressure roller assembly 20 can be driven to travel along a predetermined path. The front pressure roller assembly 20 has a first compaction surface. The first scraping assembly 70 has a first scraping side that conforms to the first compaction surface to scrape the soil attached to the first compaction surface. The first scraping side is adjustablely disposed on the first compaction surface. The first scraping assembly 70 also has an air outlet facing the first compaction surface to spray gas to clean the soil attached to the first compaction surface.

[0028] During its movement, the front compaction roller assembly 20 compacts the soil it passes over. When the soil moisture is high, it becomes sticky. When the first compaction surface of the front compaction roller assembly 20 passes over the soil, the soil adheres to it. As the front compaction roller assembly 20 continues to move, when the soil adhering to the first compaction surface reaches the first scraping side of the first scraping assembly 70, the first scraping side blocks the soil, preventing it from continuing to follow the front compaction roller assembly 20. In other words, the first scraping side scrapes away the soil from the first compaction surface. Furthermore, the first scraping side can be adjusted to always adhere to the first compaction surface, ensuring that the soil on the first compaction surface is scraped away to the maximum extent. After the soil on the front compaction roller assembly 20 is removed, the first compaction surface returns to its original flatness, without affecting the subsequent soil compaction effect. Simultaneously, the air outlet sprays gas to blow away any soil that was not completely scraped away by the first scraping side. The first scraping side and the air outlet work together to thoroughly clean the soil from the first compaction surface using a step-by-step cleaning method.

[0029] Please refer to Figures 2 to 6 Furthermore, the first cleaning and scraping assembly 70 includes a first connecting plate 71 connected to the main frame 10, a first elastic member 72 connected to the first connecting plate 71, and a first scraper 73 connected to the first connecting plate 71 via the first elastic member 72, so that it can fit against the first compaction surface of the front pressure roller assembly 20 under the elastic action of the first elastic member 72. The first scraper 73 is adjustable relative to the first connecting plate 71, and one side of the first scraper 73 is formed as the first cleaning and scraping side.

[0030] The first elastic element 72 is always in an elongated state to continuously provide force for one side of the first scraper 73 to adhere to the first compacted surface. Under the elastic action of the first elastic element 72, one side of the first scraper 73 always adheres to the first compacted surface. When one side of the first scraper 73 is worn short, the first elastic element 72 shortens under its own elastic force, causing the first scraper 73 to adhere to the first compacted surface again, thus maximizing the cleaning effect.

[0031] The first elastic element 72 can be a spring. Additionally, the first cleaning assembly 70 also includes a first fixing plate 711 bolted to the main frame 10, such as... Figure 5 As shown, the first fixing plate 711 and the first connecting plate 71 are arranged in parallel and are connected by welding a rod-like structure. The first fixing plate 711 is attached to the main frame 10 to increase the contact area between the two and thus increase the connection stability. The first connecting plate 71 is used to open the first adjustment hole 711 so that the first connecting rod 74 can pass through.

[0032] Please continue reading. Figures 2 to 6Furthermore, an arc-shaped first adjustment hole 711 is formed on the first connecting plate 71, and a first connecting rod 74 extends from the side of the first scraper 73 and passes through the first adjustment hole 711. The first connecting rod 74 is connected to the first elastic member 72, and the first connecting rod 74 can move along the first adjustment hole 711 under the elastic action of the first elastic member 72.

[0033] The first adjusting hole 711 is formed as follows: Figure 6 The diagram shows a concave arc shape from the upper right to the lower left. One end of the first elastic element 72 is attached to the first connecting rod 74 that passes through the first adjustment hole 711, and the other end is attached to a rod formed on the first connecting plate 71. This rod is parallel to the first connecting rod 74. Alternatively, the other end of the first elastic element 72 can be directly fixed to the first connecting plate 71, for example, by welding. The extension or shortening of the first elastic element 72 can move the first connecting rod 74 along the first adjustment hole 711, ensuring that one side of the first scraper 73 remains in contact with the first compaction surface of the front pressure roller assembly 20. Furthermore, when one side of the first scraper 73 is worn down and shortened, the first elastic element 72 can change the position of the first connecting rod 74 relative to the first adjustment hole 711 through its own elastic force, allowing the shortened first scraper 73 to still remain in contact with the first compaction surface of the front pressure roller assembly 20.

[0034] In addition, one side of the first scraper 73 is made of silicone material, which makes soft contact between the first scraper 73 and the front pressure roller assembly 20, reducing wear on the front pressure roller assembly 20 and ensuring that the first compaction surface of the front pressure roller assembly 20 is always flat, thus ensuring the best compaction effect.

[0035] In some embodiments, the first connecting rod 74 may be a threaded rod, and a nut may be fitted on the first connecting rod 74 to lock the first connecting rod 74 onto the first connecting plate 71. The nut can lock the first connecting rod 74 at different positions relative to the first adjusting hole 711, thereby changing the pressure applied by the first scraper 73 to the first pressure roller 21.

[0036] Please refer to Figures 2 to 5 Furthermore, the first cleaning assembly 70 also includes an air pump 75, a first air pipe 76, and an air jet 77 connected in sequence. The outlet of the air jet 77 is formed as an air outlet on the first cleaning side, and the air jet 77 has a gradually narrowing air outlet channel connected to the first air pipe 76. The gas output by the air pump 75 can flow through the air outlet channel of the first air pipe 76 and the air jet 77 in sequence before being ejected.

[0037] like Figure 2As shown, the contact line between the first scraper 73 and the first pressure roller 21 is used as a tangent to form a tangential surface of the first pressure roller 21. The first surface of the first scraper 73 forms an acute angle with this tangential surface, and the second surface forms an obtuse angle with this tangential surface. The second surface of the first scraper 73 is used to scrape the soil on the first pressure roller 21, allowing the soil to slide down along the second surface of the first scraper 73. Since a triangular area is formed between the first surface of the first scraper 73 and the surface of the first pressure roller 21, the first surface of the first scraper 73 cannot be used for scraping to avoid soil accumulation in this triangular area. The air jet 77 is set in this triangular area. On the one hand, when the soil not scraped by the first scraper 73 follows the first pressure roller 21 into this triangular area, the high-pressure gas sprayed by the air jet 77 can perform secondary cleaning of this soil. The air jet 77 works with the first scraper 73 to achieve secondary cleaning to achieve the best cleaning effect. On the other hand, if soil enters this triangular area, the air jet 77 can spray high-pressure gas to remove the soil in the triangular area, preventing soil accumulation in the triangular area. The gas is powered by an air pump, and after flowing through the gradually narrowing outlet air passage of the jet component 77, the flow velocity increases, forming high-pressure gas, which can increase the force generated by the blowing of the gas and ensure the best purging effect.

[0038] The first cleaning assembly 70 also includes a main air pipe 712. A first air pipe 76 is connected to an air pump 75 via the main air pipe 712. A valve 710 is installed on the main air pipe 712. The opening and closing of the valve 710 controls the flow of gas. The valve 710 is opened only when gas needs to be ejected, saving energy. Figure 3 As shown, the jet component 77 includes a connecting pipe 772 connected to the first air pipe 76 and a plurality of nozzles 771 connected to the connecting pipe 772. The outlet of the nozzles 771 is elongated to increase the gas purging range.

[0039] Please refer to Figure 2 Furthermore, the front pressure roller assembly 20 includes a first pressure roller 21 rotatably disposed relative to the first cleaning assembly 70 and a reinforcing member 23 disposed on the surface of the first pressure roller 21. The surface of the first pressure roller 21 is formed as the first compaction surface of the front pressure roller assembly 20. The reinforcing member 23 protrudes beyond the outline of the first pressure roller 21. An avoidance groove 731 is formed on the first scraper 73 to allow the reinforcing member 23 to pass through during the rotation of the first pressure roller 21.

[0040] The reinforcing component 23 increases the mass of the first pressure roller 21, resulting in greater pressure applied to the soil and better compaction. It also makes the movement and steering of the first pressure roller 21 more stable. When the first pressure roller 21 rotates, it moves the reinforcing component 23. When the reinforcing component 23 reaches the first scraper 73, it is blocked, preventing the first pressure roller 21 from continuing to rotate. Therefore, a clearance groove 731 is provided on the first scraper 73, allowing the reinforcing component 23 to pass through without affecting the continuous rotation of the first pressure roller 21.

[0041] Please refer to Figures 3 to 5 Furthermore, the first cleaning assembly 70 also includes a cleaning brush 78 disposed on one side of the clearance groove 731 to clean the soil adhering to the reinforcing member 23.

[0042] During the rotation of the first pressure roller 21, the reinforcing component 23 will also come into contact with the ground under the rotation of the first pressure roller 21, causing soil to stick to the reinforcing component 23. Therefore, a cleaning brush 78 is set up to clean the soil on the reinforcing component 23.

[0043] Please refer to Figures 3 to 5 Furthermore, the first cleaning assembly 70 also includes a second air pipe 79 connected to the air pump 75, and the cleaning brush 78 includes a connecting box 781 and bristles 782 connected to the connecting box 781. The connecting box 781 has a ventilation chamber connected to the second air pipe 79 and an air outlet 7811 connected to the ventilation chamber. One side of the connecting box 781 faces the first pressure roller 21, and the bristles 782 and the air outlet 7811 are both located on this side of the connecting box 781.

[0044] The bristles 782 are used to clean the soil adhering to the reinforcing component 23, and the bristles 782 can be made of steel. The air outlet 7811 faces the first pressure roller 21. On the one hand, the air ejected from the air outlet 7811 can also clean the soil adhering to the reinforcing component 23, achieving the best cleaning effect in conjunction with the bristles 782; on the other hand, when soil adheres to the bristles 782, the air blown out from the air outlet 7811 can clean the soil adhering to the bristles 782. The second air pipe 79 is connected to the air pump 75 through the main air pipe 712.

[0045] Please refer to Figure 2 Furthermore, the reinforcing component 23 includes a plurality of reinforcing plates 231 spaced apart circumferentially along the first pressure roller 21, and each reinforcing plate 231 passes through the cleaning brush 78 in sequence when the first pressure roller 21 rotates.

[0046] The front pressure roller assembly 20 also includes a second pressure roller 22, whose axis is on the same straight line as the first pressure roller 21. The two are located on opposite sides of the main frame 10 and are rotatably connected to the main frame 10. The reinforcing component 23 also includes a plurality of reinforcing plates 231 spaced circumferentially along the second pressure roller 22. The reinforcing plates 231 are engaged with the second pressure roller 22 in the same way as they are engaged with the first pressure roller 21.

[0047] Specifically, the reinforcing plate 231 has a rectangular plate structure. Multiple identical reinforcing plates 231 facilitate mass production. Compared to the annular reinforcing plate 231 fitted around the first pressure roller 21 and the second pressure roller 22, the reinforcing plate 231 does not need to consider the shape of the first pressure roller 21 and the second pressure roller 22. On the other hand, multiple reinforcing plates 231 can reduce the use of materials and save costs. Furthermore, multiple reinforcing plates 231 are respectively fixed on the first pressure roller 21 and the second pressure roller 22. Each reinforcing plate 231 on the first pressure roller 21 is fixedly connected to the first pressure roller 21, and each reinforcing plate 231 on the second pressure roller 22 is fixedly connected to the second pressure roller 22. This can increase the stability of the reinforcing plate 231 and prevent the reinforcing plate 231 from falling off during the movement of the first pressure roller 21 and the second pressure roller 22.

[0048] The reinforcing plate 231 on the first pressure roller 21 extends axially less than the axial length of the first pressure roller 21. This reinforcing plate 231 is located on the side of the first pressure roller 21 facing the second pressure roller 22. Similarly, the reinforcing plate 231 on the second pressure roller 22 extends axially less than the axial length of the second pressure roller 22. This reinforcing plate 231 is also located on the side of the second pressure roller 22 facing the first pressure roller 21. The reinforcing plates 231 are located on the side directly opposite the first and second pressure rollers 21, i.e., on the inner side. This results in a greater mass on the inner side of the first and second pressure rollers 21 and 22, placing the center of gravity of the entire self-cleaning soil compaction device in the middle. This prevents the front pressure roller assembly 20 from tipping over due to the greater mass on the outer side during turning, thus making the movement and turning of the front pressure roller assembly 20 more stable. Furthermore, when the operator is seated in the driver's seat 40, the first and second pressure rollers 21 and 22 provide sufficient balancing force to prevent the front pressure roller assembly 20 from tilting.

[0049] Additionally, the first cleaning assembly 70 includes two first fixing plates 711, two first connecting plates 71, two first elastic elements 72, two first scrapers 73, two first connecting rods 74, an air pump 75, two main air pipes 712, two valves 710, two first air pipes 76, two jet nozzles 77, two second air pipes 79, and two cleaning brushes 78. The air pump 75 is fixed to the main frame 10. A valve 710, a first air pipe 76, a jet nozzle 77, a second air pipe 79, and a cleaning brush 78 are fitted to the first pressure roller 21. Another first fixing plate 711, another first connecting plate 71, another first elastic element 72, another first scraper 73, another first connecting rod 74, another main air pipe 712, another valve 710, another first air pipe 76, another jet nozzle 77, another second air pipe 79, and another cleaning brush 78 are fitted to the second pressure roller 22 in exactly the same manner, forming a combination with the portion fitted to the first pressure roller 21. Figure 2 The symmetrical form shown.

[0050] Please refer to Figure 7 and Figure 8 Furthermore, the self-cleaning land compaction device also includes a rear roller assembly 30 mounted on the main frame 10 and a second scraping assembly 80 mounted on the rear roller assembly 30. The rear roller assembly 30 can be driven by the front roller assembly 20 to travel along the same path. The rear roller assembly 30 has a second compaction surface. The second scraping assembly 80 has a second scraping side that conforms to the second compaction surface to scrape the soil adhering to the second compaction surface. The second scraping side is adjustablely mounted on the second compaction surface to change the pressure applied to the second compaction surface.

[0051] The driving power is applied to the front roller assembly 20, thereby driving the rear roller assembly 30 forward. The first compaction surface of the front roller assembly 20 and the second compaction surface of the rear roller assembly 30 jointly compact the soil. When the soil in the ground has high cohesion, soil will adhere to both the first compaction surface of the front roller assembly 20 and the second compaction surface of the rear roller assembly 30. Therefore, a second scraping assembly 80 is provided to scrape the soil adhering to the second compaction surface of the rear roller assembly 30.

[0052] The second cleaning and scraping assembly 80 includes a second connecting plate 81 connected to the main frame 10, a second elastic member 82 connected to the second connecting plate 81, and a second scraper 83 connected to the second connecting plate 81 via the second elastic member 82.

[0053] The rear pressure roller assembly 30 includes a third pressure roller 31. The surface of the third pressure roller 31 forms the second compaction surface of the rear pressure roller assembly 30. With the contact line between the second scraper 83 and the third pressure roller 31 as the tangent, a tangential surface is formed of the third pressure roller 31. The first surface of the second scraper 83 forms an acute angle with the tangential surface, and the second surface forms an obtuse angle with the tangential surface. The second surface of the second scraper 83 is used to scrape the soil on the third pressure roller 31, so that the soil can slide down along the second surface of the second scraper 83. Since a triangular area is formed between the first surface of the second scraper 83 and the surface of the third pressure roller 31, the first surface of the second scraper 83 cannot be used for scraping to avoid soil accumulation in the triangular area.

[0054] An arc-shaped second adjustment hole 811 is formed on the second connecting plate 81. The second adjustment hole 811 is formed as follows: Figure 8 The concave arc shape from the upper left to the lower right in the indicated orientation has two second connecting plates 81, which are located on opposite sides of the third pressure roller 31.

[0055] The second scraper 83 includes a second fixed plate 831 connected to the second connecting plate 81 and a flexible plate 832 fixed to the second fixed plate 831 by bolts and nuts. The flexible plate 832 can be made of silicone, so that the second scraper 83 forms a soft contact with the rear pressure roller assembly 30, reducing wear on the rear pressure roller assembly 30 and ensuring that the second compaction surface of the rear pressure roller assembly 30 is always flat, thus ensuring the best compaction effect. The side of the flexible plate 832 facing away from the second fixed plate 831 forms a second cleaning side that fits against the second compaction surface of the rear pressure roller assembly 30. On each of the opposite sides of the second fixed plate 831, a second connecting rod 84 extends horizontally and passes through the second adjustment holes 811 of the two second connecting plates 81 respectively.

[0056] The second elastic element 82 can be a spring. One end of the second elastic element 82 is attached to the second connecting rod 84 passing through the second adjusting hole 811, and the other end is attached to a rod formed on the second connecting plate 81. This rod is parallel to the second connecting rod 84. Alternatively, the other end of the second elastic element 82 can be directly fixed to the second connecting plate 81, for example, by welding. The extension or shortening of the second elastic element 82 can drive the second connecting rod 84 to move along the second adjusting hole 811, ensuring that one side of the second scraper 83 remains in contact with the second compaction surface of the rear pressure roller assembly 30. Furthermore, when one side of the second scraper 83 is worn and shortened, the second elastic element 82 can change the position of the second connecting rod 84 relative to the second adjusting hole 811 through its own elastic force, ensuring that the shortened second scraper 83 still remains in contact with the second compaction surface of the rear pressure roller assembly 30. The second connecting rod 84 is formed at the lower part of the second scraper 83, and a rotating shaft extends from the upper part of the second scraper 83, rotatably connected to the second connecting plate 81.

[0057] In some embodiments, the second connecting rod 84 may be a threaded rod, and a nut may be fitted on the second connecting rod 84 to lock the second connecting rod 84 onto the second connecting plate 81. The nut can lock the second connecting rod 84 at different positions relative to the second adjusting hole 811, thereby changing the pressure applied by the second scraper 83 to the third pressure roller 31.

[0058] Please refer to Figure 9 Furthermore, the rear pressure roller assembly 30 also includes a vibrator 33, and the third pressure roller 31 has an internal mounting cavity, with the vibrator 33 fixed to the cavity wall of the mounting cavity.

[0059] When the vibrator 33 is activated, it drives the third pressure roller 31 to vibrate, shaking off the soil adhering to the third pressure roller 31. This, combined with the second cleaning and scraping assembly 80, cleans the soil off the third pressure roller 31 to achieve the best cleaning effect. It should be noted that the volume and material of the third pressure roller 31 make its mass large enough to ensure that it can generate sufficient pressure to compact the ground, and the installation cavity will not prevent the ground from being ineffectively compacted.

[0060] like Figure 7 As shown, the rear pressure roller assembly 30 also includes a connecting frame 32 that connects the main frame 10 and the third pressure roller 31. The third pressure roller 31 is rotatably connected to the connecting frame 32, and the connecting frame 32 is used to connect the main frame 10 and the third pressure roller 31.

[0061] Furthermore, the axial length of the third pressure roller 31 is greater than or equal to the distance between the first pressure roller 21 and the second pressure roller 22, the length of the reinforcing plate 231 on the first pressure roller 21 in the axial direction, and the length of the reinforcing plate 231 on the second pressure roller 22 in the axial direction, so that the travel path of the reinforcing plate 231 is repeated by the third pressure roller 31. Since the reinforcing plate 231 on the first pressure roller 21 protrudes from the outer surface of the first pressure roller 21, and the reinforcing plate 231 on the second pressure roller 22 protrudes from the outer surface of the second pressure roller 22, the reinforcing plate 231 will press the soil into a rectangular groove during the movement of the first pressure roller 21 and the second pressure roller 22, resulting in uneven soil. Therefore, by setting the axial length of the third pressure roller 31 to the above-mentioned length, after the reinforcing plate 231 passes over the soil, the third pressure roller 31 can press over the rectangular groove pressed by the reinforcing plate 231 on the soil, eliminate the rectangular groove, and achieve soil flatness.

[0062] Please refer to Figure 1 and Figure 10Furthermore, the self-cleaning land compaction device also includes a driver's seat 40, a steering assembly 50 connected to the front pressure roller assembly 20, and a pedal 60 connected to the main frame 10. The operating end of the steering assembly 50 is located on the front side of the driver's seat 40, so as to change the travel direction of the front pressure roller assembly 20 through the steering assembly 50. The steering assembly 50 is connected between the first pressure roller 21 and the second pressure roller 22. The pedal 60 has a foot pedal surface facing the driver's seat 40.

[0063] When leveling and compacting the ground, the operator sits in the driver's seat 40 and controls the direction of travel of the front pressure roller assembly 20 through the steering component 50. The front pressure roller assembly 20 drives the rear pressure roller assembly 30 along the direction of travel determined by the steering component 50. During the movement, the first pressure roller 21 and the second pressure roller 22 of the front pressure roller assembly 20 and the third pressure roller 31 of the rear pressure roller assembly 30 compact the ground. The front pressure roller assembly 20 and the rear pressure roller assembly 30 move forward together with the operator sitting in the driver's seat 40. The operator, sitting in the driver's seat 40, operates the steering component 50 in a driving manner, making operation more convenient.

[0064] The front pressure roller assembly 20 is driven by a driver 90, which drives the first pressure roller 21 and the second pressure roller 22 to rotate. The driver 90 can be a combination of a motor and a transmission assembly. In some embodiments, the steering assembly 50 and the driver 90 can be the same as the steering and drive components of a tractor, respectively.

[0065] The pedal 60 is used by the operator sitting in the driver's seat 40. On the one hand, it facilitates the operator's application of force to the steering assembly 50, thereby enabling quick and agile steering of the front pressure wheel assembly 20. On the other hand, the pedal 60 can distribute the force applied to the driver's seat 40 by the operator, allowing the operator to sit more stably in the driver's seat 40. Two pedals 60 are provided, each corresponding to one of the operator's feet. Multiple anti-slip protrusions are provided on the foot surface of the pedal 60 to increase the friction between the pedal 60 and the operator's feet, allowing the operator to step more stably on the pedal 60. The pedal 60 is connected to the connecting frame 32 of the main frame 10 and the rear pressure wheel assembly 30 via a "T"-shaped frame, making full use of space and ensuring the compactness of the overall structure.

[0066] The main frame 10 includes a front frame 11 and a rear frame 12 that are rotatably connected to each other, and the axis of rotation of both is arranged in the vertical direction. The front pressure wheel assembly 20 is connected to the front frame 11, and the rear pressure wheel assembly 30 and the driver's seat 40 are connected to the rear frame 12. The steering assembly 50 includes a connecting arm 51 connected to the front frame 11 and an operating handle 52 connected to the connecting arm 51. The operating handle 52 forms the operating end of the steering assembly 50, and the operating handle 52 can be driven to change the travel direction of the front pressure wheel assembly 20 through the connecting arm 51. The operator rotates the operating handle 52, transmitting force to the connecting arm 51, which in turn transmits the force to the front pressure roller assembly 20, causing it to steer. The steering force of the front pressure roller assembly 20 is then transmitted to the front frame 11 of the main frame 10. The front frame 11 moves with the front pressure roller assembly 20, causing the rear frame 12 to move. The rear frame 12 then moves the rear pressure roller assembly 30 and the driver's seat 40, thus changing the direction of travel of the entire self-cleaning soil compaction device. The front frame 11 and the rear frame 12 are hinged to reduce offset during steering and improve steering performance. The connecting arm 51 connects to the front frame 11 between the first pressure roller 21 and the second pressure roller 22, and the connecting arm 51 can also be directly connected to the front frame 11.

[0067] In practical use, the operator sits in the driver's seat 40, steps on the pedal 60, and holds the operating handle 52 of the steering assembly 50 to start the driver 90. The driver 90 drives the first pressure roller 21 and the second pressure roller 22 of the front pressure roller assembly 20 to rotate, causing the front pressure roller assembly 20 to move forward. At the same time, it drives the rear pressure roller assembly 30 and the operator in the driver's seat 40 to move forward together. During the movement, the first pressure roller 21 and the second pressure roller 22 of the front pressure roller assembly 20 and the third pressure roller 31 of the rear pressure roller assembly 30 compact and level the ground. When it is necessary to change the direction of travel, the operator turns the operating handle 52, which drives the front pressure roller assembly 20 to change the direction of travel through the connecting arm 51, and then drives the rear pressure roller assembly 30 to turn together through the main frame 10.

[0068] Simultaneously, the first scraping assembly 70 scrapes the soil adhering to the first pressure roller 21 and the second pressure roller 22, and the cleaning brush 78 cleans the soil adhering to the reinforcing component 23. When necessary, the valve 710 is opened, allowing gas to be ejected from the air outlet 7811 of the jetting component 77 and the cleaning brush 78 to clean the soil adhering to the first pressure roller 21 and the second pressure roller 22. The second scraping assembly 80 scrapes the soil adhering to the third pressure roller 31, and the vibrator 33 is activated, providing vibration force to the third pressure roller 31 to shake off the soil adhering to the third pressure roller 31.

[0069] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A self-cleaning land compacting device, characterized by: The device includes a main frame, a front pressure roller assembly mounted on the main frame, and a first cleaning assembly mounted on the front pressure roller assembly. The front pressure roller assembly can be driven to travel along a predetermined path. The front pressure roller assembly has a first compaction surface. The first cleaning assembly has a first cleaning side that conforms to the first compaction surface to clean the soil adhering to the first compaction surface. The first cleaning side is adjustablely mounted on the first compaction surface. The first cleaning assembly also has an air outlet facing the first compaction surface to spray gas to clean the soil adhering to the first compaction surface.

2. The self-cleaning land compaction device as described in claim 1, characterized in that: The first cleaning and scraping assembly includes a first connecting plate connected to the main frame, a first elastic member connected to the first connecting plate, and a first scraper connected to the first connecting plate through the first elastic member, so that it can fit against the first compaction surface of the front pressure roller assembly under the elastic action of the first elastic member. The first scraper is adjustable relative to the first connecting plate, and one side of the first scraper is formed as the first cleaning and scraping side.

3. The self-cleaning land compaction device as described in claim 2, characterized in that: The first connecting plate has an arc-shaped first adjustment hole, and the side of the first scraper extends a first connecting rod that passes through the first adjustment hole. The first connecting rod is connected to the first elastic member, and the first connecting rod can move along the first adjustment hole under the elastic action of the first elastic member.

4. The self-cleaning land compaction device as described in claim 2, characterized in that: The first cleaning assembly further includes an air pump, a first air pipe, and an air jet component connected in sequence. The outlet of the air jet component forms the air outlet of the first cleaning assembly, and the air jet component has a gradually narrowing air outlet channel connected to the first air pipe. The gas output by the air pump can flow through the first air pipe and the air outlet channel of the air jet component in sequence before being ejected.

5. The self-cleaning land compaction device as described in claim 4, characterized in that: The front pressure roller assembly includes a first pressure roller rotatably disposed relative to the first scraping assembly and a reinforcing member disposed on the surface of the first pressure roller. The surface of the first pressure roller is formed as the first compaction surface of the front pressure roller assembly. The reinforcing member protrudes beyond the contour of the first pressure roller. An avoidance groove is formed on the first scraper to allow the reinforcing member to pass through during the rotation of the first pressure roller.

6. The self-cleaning land compaction device as described in claim 5, characterized in that: The first cleaning assembly also includes a cleaning brush disposed on one side of the clearance groove to clean the soil adhering to the reinforcing component.

7. The self-cleaning land compaction device as described in claim 6, characterized in that: The first cleaning assembly further includes a second air pipe connected to the air pump. The cleaning brush includes a connecting box and bristles connected to the connecting box. The connecting box has a ventilation chamber connected to the second air pipe and an air outlet connected to the ventilation chamber. One side of the connecting box faces the first pressure roller, and the bristles and the air outlet are both located on this side of the connecting box.

8. The self-cleaning land compaction device as described in claim 6, characterized in that: The reinforcing component includes a plurality of reinforcing plates spaced apart circumferentially along the first pressure roller. When the first pressure roller rotates, each reinforcing plate passes through a cleaning brush in sequence.

9. The self-cleaning land compaction device as described in claim 1, characterized in that: The self-cleaning land compaction device also includes a rear roller assembly mounted on the main frame and a second scraping assembly mounted on the rear roller assembly. The rear roller assembly can be driven by the front roller assembly to travel along the same path. The rear roller assembly has a second compaction surface. The second scraping assembly has a second scraping side that conforms to the second compaction surface to scrape the soil adhering to the second compaction surface. The second scraping side is adjustablely mounted on the second compaction surface to change the pressure applied to the second compaction surface.

10. The self-cleaning land compaction device as described in claim 9, characterized in that: The rear pressure roller assembly includes a third pressure roller and a vibrator. The surface of the third pressure roller forms the second compaction surface of the rear pressure roller assembly. An installation cavity is formed inside the third pressure roller, and the vibrator is fixed to the cavity wall of the installation cavity.

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