A road surface tamping device and method

Abstract

This invention provides a road compaction device and method, relating to the field of highway construction equipment. The road compaction device includes: a first frame configured to be detachably connected to an operating device; a drive device disposed on the first frame; a tamping hammer detachably connected to the drive device; a second frame detachably connected to the lower part of the first frame; and a compaction seat disposed on the second frame, wherein the compaction seat has a bearing surface for supporting the tamping hammer when it is separated from the drive device. The tamping hammer is located between the first and second frames. This split-type installation method helps reduce the load-bearing pressure on the operating device during installation, reducing the risk of accidents when transporting heavy objects at high positions. Furthermore, the first frame is relatively lightweight, and installing the first frame first and then combining it with the second frame simplifies the assembly process, making the overall installation process smoother and improving work efficiency.

Description

Technical Field

[0001] This invention relates to the field of highway construction equipment technology, and in particular to a road surface compaction device and method. Background Technology

[0002] The construction and reconstruction of highways are usually carried out in accordance with established highway network plans. During construction, to ensure that the roadbed has sufficient bearing capacity and stability, the ground surface needs to be thoroughly compacted. As a key foundation layer of the road structure, the compaction quality of the roadbed has a significant impact on the overall service life and safety performance of the road. Therefore, compaction equipment is often used during construction to achieve repeated compaction of the roadbed.

[0003] In related technologies, compaction devices are often attached to engineering vehicles equipped with robotic arms. For example, a common practice is to remove the bucket from an excavator and install the compaction device at the end of the robotic arm. However, this structure requires disassembly and reassembly of the existing working equipment before it can be put into use. Due to the significant weight of the compaction device, there are certain safety risks during the disassembly and installation process. Summary of the Invention

[0004] To address the aforementioned problems, this application provides a road compaction device and method.

[0005] In a first aspect, this application provides a road compaction device, comprising:

[0006] The first rack is configured to be detachably connected to the operating equipment;

[0007] The drive unit is mounted on the first frame;

[0008] A ramming hammer is detachably connected to the drive device;

[0009] The second frame is detachably connected to the bottom of the first frame;

[0010] A tamping seat is provided on the second frame, and the tamping seat is provided with a bearing surface for supporting the tamping hammer when the tamping hammer is separated from the driving device;

[0011] The tamping hammer is located between the first frame and the second frame.

[0012] Preferably, the second frame is provided with a locking mechanism, which is used to lock the hammer to the second frame when the hammer is separated from the drive device.

[0013] Preferably, the tamping seat has an isolation member at one end away from the bearing surface, and the isolation member extends continuously along the circumference of the tamping seat; the isolation member is configured to protrude towards the end of the tamping seat away from the bearing surface when the hammer strikes the bearing surface, and to be flush with the tamping seat away from the bearing surface when the hammer moves away from the bearing surface.

[0014] Preferably, a flexible connector and a rigid fastener are provided between the first frame and the second frame; the flexible connector is used to connect the first frame and the second frame, and the flexible connector is configured to align the first frame and the second frame under the action of gravity when the second frame is lifted by the first frame; the rigid fastener is configured to rigidly connect and fix the first frame and the second frame after they are aligned.

[0015] Preferably, the locking mechanism includes a locking member disposed on the second frame, and the ram is provided with a locking groove in the circumferential direction that cooperates with the locking member.

[0016] Preferably, the first frame is provided with a limiting member, which is configured to abut against the second frame when the first frame is lifted by the flexible connector and the first frame is tilted away from the operating device, so as to guide the first frame to align with the second frame.

[0017] Preferably, the first frame includes a mounting portion for connecting to an operating device, and the limiting member is disposed on the side of the first frame opposite to the mounting portion.

[0018] Preferably, the limiting member extends from the first frame to the second frame, and the second frame is provided with a guide groove that cooperates with the limiting member.

[0019] Preferably, the isolation element includes an elastic airbag;

[0020] The compaction seat is equipped with an inflatable structure, which is connected to the elastic airbag.

[0021] The inflatable structure includes a piston rod, at least a portion of which protrudes from the receiving surface, and the piston rod is configured to push gas into the elastic bladder to inflate it when pressed by the ramming hammer.

[0022] Preferably, the compaction seat is provided with an installation groove, the elastic airbag is received in the installation groove, and the opening edge of the elastic airbag is sealed to the groove wall of the installation groove.

[0023] Preferably, the compaction seat is provided with a pressure relief hole, one end of which is connected to the elastic airbag, and the other end extends to the side of the compaction seat and is provided with a valve; the valve is configured to release gas when the pressure in the elastic airbag exceeds a preset value, and the valve is also configured to replenish gas to the elastic airbag.

[0024] Preferably, the compaction seat is provided with a piston chamber, and the piston rod is movably disposed in the piston chamber.

[0025] Preferably, an elastic element is provided between the piston rod and the piston chamber;

[0026] The piston rod is configured to protrude from the bearing surface under the combined action of the elastic element and the gas pressure inside the piston chamber.

[0027] Preferably, the piston chamber is provided with a first magnetic element, and the piston rod is provided with a second magnetic element, the first magnetic element and the second magnetic element attract each other; the piston rod is configured to overcome the attraction between the first magnetic element and the second magnetic element under the combined action of the elastic element and the gas pressure inside the elastic airbag, thereby protruding from the receiving surface.

[0028] Preferably, when the piston rod is fully housed within the compaction seat, the distance between the first magnetic element and the second magnetic element is greater than 0.

[0029] Secondly, this application provides a road compaction method, which uses the road compaction device described in the above technical solution and includes the following steps:

[0030] Connect the first frame to the operating equipment;

[0031] Place the tamping base and the second frame in the position to be tamped;

[0032] The hammer is placed on the compaction seat and fixedly connected to the second frame;

[0033] The first frame is lowered so that the drive device is connected to the ramming hammer;

[0034] Connect the second rack to the first rack;

[0035] The driving device is used to drive the rammer to repeatedly strike the bearing surface of the compaction seat in order to compact the ground.

[0036] In the road compaction device of this application embodiment, by setting the first frame and the second frame to be detachably connected, the compaction device has a flexible split-operation mode during the installation or disassembly stages. Since the tamping hammer and compaction seat are relatively heavy, they can be fixed together with the second frame before installation, allowing the heavier components to be assembled on the ground or under stable support conditions; then the second frame is connected to the first frame. Compared to directly lifting and installing the entire heavy compaction device onto the operating equipment, this split-installation method helps reduce the load-bearing pressure on the operating equipment during installation and reduces the risk of accidents when transporting heavy objects at high positions. At the same time, the first frame is relatively lightweight; by installing the first frame first and then combining it with the second frame, the assembly process is simplified, making the overall installation process smoother and improving work efficiency. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a structural illustration of an embodiment of this application. Figure 1 ;

[0039] Figure 2 This is a structural illustration of an embodiment of this application. Figure 2 ;

[0040] Figure 3 This is a cross-sectional view of an embodiment of this application;

[0041] Figure 4 yes Figure 3 Enlarged diagram of section A in the middle;

[0042] Figure 5 This is a structural illustration of an embodiment of this application. Figure 3 ;

[0043] Figure 6 This is a structural illustration of an embodiment of this application. Figure 4 .

[0044] The diagram is marked as follows:

[0045] 100, First frame; 110, Limiting component; 120, Mounting part; 200, Drive device; 300, Hammer; 310, Locking groove; 400, Second frame; 410, Locking mechanism; 411, Locking component; 420, Isolating component; 421, Elastic airbag; 430, Guide groove; 500, Compactor seat; 510, Inflatable structure; 511, Piston rod; 511a, Second magnetic component; 512, Elastic component; 520, Mounting groove; 530, Pressure relief hole; 540, Valve; 550, Piston chamber; 551, First magnetic component; 560, Receiving surface; 600, Flexible connector; 700, Rigid fastener. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0047] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0048] According to the first aspect of this application, referring to Figures 1 to 6 This application provides a road compaction device, including a first frame 100, a drive device 200, a tamping hammer 300, a second frame 400, and a compaction base 500. The first frame 100 is configured to be detachably connected to an operating device. In one example, the operating device can be an engineering vehicle equipped with a robotic arm, and the first frame 100 can be connected to the robotic arm via a connecting seat, positioning pin, or quick-connect mechanism. Through this connection method, the first frame 100 can move up and down, translate, or adjust its posture along with the robotic arm, which is beneficial for moving the compaction device to the target work area.

[0049] For example, the connection portion of the first frame 100 may include at least one of a plug-in type, a snap-fit ​​type, or a screw-in type structure, thereby adapting to mate with different types of vehicle interfaces. Furthermore, the first frame 100 may be made of steel, alloy materials, or composite materials to balance strength and weight requirements.

[0050] In some embodiments, the drive device 200 is mounted on the first frame 100 and is used to drive the ramming hammer 300 to reciprocate in a vertical direction. Exemplarily, the drive device 200 can be a hydraulic cylinder, a hydraulic hammer, an electric impact mechanism, or a drive structure composed of a motor and an eccentric mechanism. For hydraulic drives, its output end can form a detachable interface with the ramming hammer 300, for example, by means of a pin connection, a clamping sleeve, or a quick-connector.

[0051] The drive unit 200 can apply periodic impacts to the rammer 300, causing the rammer 300 to repeatedly strike the compaction seat 500. By adopting a drive structure that can release high impact force, it is beneficial to improve the compaction density and is suitable for meeting the construction requirements of different foundation materials.

[0052] In some embodiments, refer to Figure 1 and Figure 3 The tamping hammer 300 is detachably connected to the drive unit 200. When the compaction device enters the transportation, maintenance, or installation phase, the tamping hammer 300 can be separated from the drive unit 200 to reduce the load on the first frame 100 and lower the center of gravity, thus making the overall structure more stable during lifting or movement. Simultaneously, the removal of the tamping hammer 300 prevents the drive unit 200 from bearing static loads for extended periods when not in operation, which helps extend the service life of the drive unit 200.

[0053] The ram 300 can be solid or have a cavity structure, and the material can be steel, cast iron, or high-density alloy. Its shape can be cylindrical, square, or other shapes suitable for impact. The impact surface at the bottom of the ram 300 can be set as a flat surface, curved surface, or structure with stiffening ribs, depending on the construction requirements.

[0054] In some embodiments, the second frame 400 is detachably connected to the lower part of the first frame 100. Exemplarily, the first frame 100 and the second frame 400 can be connected via a flexible connector 600, a rigid fastener 700, or a combination of both. For example, during initial assembly, the two can be temporarily attached using a flexible connector 600 (such as a wire rope, chain, or flexible connecting strap) to allow the structure to adaptively fine-tune its position in the vertical direction, making the alignment process more convenient; subsequently, the two are reliably fixed using rigid fasteners 700 such as bolts, pins, or clips.

[0055] The second frame 400 supports the compaction base 500, stabilizing its position and making it suitable for withstanding the impact force from the hammer 300. In different embodiments, the second frame 400 may also include a buffer plate, a stiffening structure, or a limiting member 110 for positioning with the ground to improve the stability of the device during compaction.

[0056] In some embodiments, refer to Figure 2 and Figure 3 The tamping seat 500 is mounted on the second frame 400 and has a receiving surface 560. The receiving surface 560 supports the tamping hammer 300 when it is separated from the drive device 200, allowing the tamping hammer 300 to be placed in a stable position, thereby facilitating disassembly or installation operations. In one example, the receiving surface 560 may be a solid plate, a ring-shaped surface, or a structure with supporting bosses, to suit tamping hammers 300 of different shapes.

[0057] By setting a bearing surface 560 on the compaction seat 500, when it is necessary to disassemble the tamping hammer 300, the tamping hammer 300 can be lowered to the bearing surface 560 by the drive device 200 to make the tamping hammer 300 in a stable stress state, and then the connection between the drive device 200 and the tamping hammer 300 can be disconnected. This structural layout is conducive to improving the convenience of operation and reducing the risks in the process of manual intervention.

[0058] The tamping hammer 300 is located between the first frame 100 and the second frame 400, so that the output end of the drive device 200 directly acts on the tamping hammer 300. The tamping hammer 300 then transmits the impact force downward to the compaction seat 500, thus forming an effective vertical impact path. This structural layout has the characteristics of simple assembly relationship and clear force transmission path, which is suitable for improving the overall working reliability of the device.

[0059] In the road compaction device of this embodiment, the first frame 100 and the second frame 400 are designed as detachably connected structures. By dividing the overall device into two modules, each supported by the first frame 100 and the second frame 400 respectively, a differentiated weight distribution is achieved during installation, disassembly, and transportation. Specifically, the tamping hammer 300 and the compaction seat 500 are heavier components, both of which can be mounted on the second frame 400 in this device; while the first frame 100, which mainly supports the drive device 200 and its connecting mechanism, is relatively lighter and easier to install during assembly.

[0060] During actual installation, the second frame 400 can be placed on the ground, a support platform, or a mobile trolley. Because the second frame 400 has a low center of gravity, the overall structure is relatively stable when the tamping hammer 300 and the compaction seat 500 are positioned on it, making it less prone to tipping or significant swaying. For example, when the ground at the construction site is uneven, the stability of the second frame 400 can be improved by widening the bottom support, installing ground contact pads, or providing stiffening structures, which helps maintain a stable posture during hoisting or contact operations.

[0061] Subsequently, the lighter first frame 100 can be connected to the operating equipment. Because the first frame 100 is lighter, its installation requires less physical exertion from the operators, and the load on the robotic arm and other operating equipment is less when lifting and positioning the first frame 100, making positioning accuracy easier to control. With this structural arrangement, operators no longer need to directly operate the heavier compaction device for installation, reducing reliance on cranes, large auxiliary equipment, or multiple personnel, thus simplifying the assembly process.

[0062] During the connection phase between the first frame 100 and the second frame 400, a preliminary connection can be made using a flexible connector 600. The flexible connector 600 can be, for example, a wire rope, chain, flexible sling, or a connecting piece with a certain degree of flexibility. The flexible connector 600 allows the first frame 100 to automatically adjust its posture during descent to align with the positioning part of the second frame 400. The flexible connector 600 serves as a temporary guide or buffer during this phase. Once the connection between the first frame 100 and the second frame 400 has naturally aligned under gravity, it is then reliably secured using rigid fasteners 700 (such as bolts, locking pins, or latch structures).

[0063] The combination of the above structures allows the first frame 100 to primarily perform positioning and connection functions during installation, while the second frame 400, as the main carrier supporting the tamping hammer 300 and the compaction base 500, has its weight borne by the ground or a low-level platform, thus reducing the load under high-altitude or suspended conditions. This change in mechanical structure helps to lower the center of gravity of the overall device during installation, indirectly reducing the possibility of tipping, shaking, or swaying during operation.

[0064] Furthermore, in traditional structures, the tamping hammer 300 and tamping base 500 are fixed to the same frame as the drive device 200, resulting in a heavy frame that typically requires multiple people or auxiliary machinery to connect with the operating equipment. In this embodiment, however, by dividing the entire structure into two modules of significantly different weights, the weight of the first frame 100 is significantly reduced when installed separately, allowing a single person or a small number of personnel to connect the first frame 100 to the operating equipment, simplifying the installation process. For example, in some implementations, the weight of the first frame 100 can be designed to be smoothly controlled by the combined action of human labor and a robotic arm, without the need for large lifting machinery.

[0065] In summary, the structural design, which centrally houses the tamping hammer 300 and the compaction seat 500 on the second frame 400 and connects the first frame 100 to the operating equipment first, has several advantages. Firstly, it lowers the overall center of gravity during assembly, improving stability at each stage. Secondly, it simplifies the operation process, making the installation more controllable and thus improving overall installation efficiency compared to existing technologies. Furthermore, separating multiple components into independently operable modules facilitates transportation, relocation, or replacement when site conditions are limited.

[0066] In some embodiments, refer to Figure 2 and Figure 3 The second frame 400 is provided with a locking mechanism 410, which is used to lock the hammer 300 to the second frame 400 when the hammer 300 is separated from the drive device 200, so that the hammer 300 remains in a stable state after the connection with the drive device 200 is released.

[0067] Specifically, the locking mechanism 410 may be disposed in the area of ​​the second frame 400 near the bearing surface 560. For example, the locking mechanism 410 may include at least one of a limiting block, a limiting rod, a clamping member, a wedge structure, or a snap-fit ​​member with elastic recovery capability. The above structure can provide radial and / or axial limiting effect on the side wall or bottom structure of the tamping hammer 300 after the tamping hammer 300 is placed on the bearing surface 560, so that the position of the tamping hammer 300 is basically fixed, thereby providing a more stable support condition for the tamping hammer 300 by the second frame 400.

[0068] In this embodiment, when the rammer 300 is disassembled from the drive device 200, the operator can first use the drive device 200 to lower the rammer 300 to the receiving surface 560, allowing the receiving surface 560 to support the weight of the rammer 300. Subsequently, the locking mechanism 410 can use mechanical snap-fit, pins, screw-on fasteners, or other structural components to keep the rammer 300 and the second frame 400 relatively fixed in their positioned state. This structural approach not only reduces the safety hazards caused by the free movement of the rammer 300 during disassembly but also helps maintain the rammer 300 in a preset position during subsequent installation, making it easier for the drive device 200 to re-align the connection point of the rammer 300.

[0069] It should be noted that the "locking mechanism 410" is not limited to a specific structural form. For example, the limiting block can adopt a bolt-fixed type, a quick-release type, or an elastic fastener type; the locking component can be an elastic steel sheet, a U-shaped claw, or a clamping component using spring force; locking can also be achieved by means of hydraulic telescopic pins, mechanical cams, etc. These alternative structures can all form a stable holding effect on the hammer 300 when it is separated from the drive device 200, and belong to the alternative embodiments of this disclosure.

[0070] Through the above-described configuration, the second frame 400, while supporting the tamping hammer 300, also provides additional positioning constraints for the hammer 300, preventing significant displacement during disassembly or movement. Furthermore, the locking mechanism 410 ensures the hammer 300 remains relatively fixed in position. When the first frame 100 descends to reconnect the drive device 200 with the hammer 300, the connection points are more easily aligned, facilitating higher assembly efficiency. This combined structural action enhances the stability and operability of the overall device during assembly and disassembly.

[0071] In some embodiments, refer to Figure 3 and Figure 5 The tamping seat 500 has a spacer 420 at one end facing away from the bearing surface 560, and the spacer 420 extends continuously along the circumference of the tamping seat 500. The spacer 420 is configured to protrude from the end of the tamping seat 500 facing away from the bearing surface 560 when the hammer 300 impacts the bearing surface 560, and to be flush with the tamping seat 500 facing away from the bearing surface 560 when the hammer 300 moves away from the bearing surface 560. For example, the spacer 420 may be an integrally formed annular flange.

[0072] For example, the isolation member 420 can achieve a retractable height change through an elastic element, a reset member, a flexible material or a linkage structure; it can also be made of rubber, polyurethane or a hollow elastic structure with deformable properties, so that the isolation member 420 protrudes when it is subjected to downward compression and returns to a flat state after the external force is released.

[0073] During actual compaction, especially on relatively dry soil layers, the compaction seat 500 presses downwards against the ground after being impacted by the hammer 300. This process rapidly expels air from between the compaction seat 500 and the ground. This rapid expulsion of air may carry a large amount of fine dust particles, causing significant dust pollution in the work area, which is detrimental to the construction environment. By installing an isolator 420 at the lower end of the compaction seat 500, which protrudes downwards and contacts the ground first during compaction, a relatively high compaction zone is formed around the compaction seat 500 and the ground. This circumferential continuous compaction structure can apply a relatively greater compaction force to the circumferential edge area during compaction, resulting in a relatively dense closed zone forming instantly.

[0074] With the combined effect of this enclosed structure, air between the compaction seat 500 and the ground is less likely to escape rapidly along the circumferential outer edge, thus slowing down the air expulsion speed. As the air expulsion speed decreases, the tendency for the air to carry dust is reduced, thereby reducing dust emissions and improving the environmental conditions during operation. Simultaneously, the isolation component 420 can return to a position flush with the compaction seat 500 after compaction, ensuring that the compaction seat 500 maintains good contact and structural integrity when moving, positioning, or preparing for the next compaction operation.

[0075] It should be noted that, because the isolation element 420 can retract to a position basically flush with the compaction seat 500 away from the bearing surface 560 when the hammer 300 moves away from the bearing surface 560, the isolation element 420 can retract upwards during the rebound of the compaction seat 500 after the hammer 300 completes one impact and leaves the bearing surface 560. With this structural arrangement, the compaction seat 500 will not form a bowl-like spatial structure at its end away from the bearing surface 560 when it is away from the ground or lifted by the operating equipment.

[0076] If a significant depression forms at the lower end, a relatively low air pressure may be generated within the depression during the lifting of the compaction seat 500. This could create a negative pressure adsorption effect with the ground, potentially causing loose dust to be sucked back or rolled up, affecting the construction environment. By retracting the isolation piece 420 to a flush position, the lower end of the compaction seat 500 has an approximately flat structure, which helps avoid the aforementioned negative pressure adsorption phenomenon. This allows the compaction seat 500 to maintain a more stable lifting state when lifted off the ground, and also helps reduce the amount of dust carried away from the surface.

[0077] In practical applications, the retraction of the isolator 420 can be achieved in various ways. For example, the isolator 420 can achieve height recovery through the rebound characteristics of the elastic material itself; or the retraction force can be provided by a reset component such as an inflatable, rubber buffer or flexible connecting piece, so that the isolator 420 can extend as needed during the compaction process and return to the flush position relatively reliably after the compaction is completed.

[0078] In some embodiments, refer to Figure 5 and Figure 6 A flexible connector 600 and a rigid fastener 700 are provided between the first frame 100 and the second frame 400. The flexible connector 600 is used to connect the first frame 100 and the second frame 400, and the flexible connector 600 is configured to align the first frame 100 and the second frame 400 under the action of gravity when the second frame 400 is lifted by the first frame 100. The rigid fastener 700 is configured to rigidly connect and fix the first frame 100 and the second frame 400 after they are aligned.

[0079] The flexible connector 600 is used to achieve a pre-connection during the initial installation stage of the first frame 100 and the second frame 400, so that the first frame 100 can drive the second frame 400 to rise during the lifting process; the rigid fastener 700 is used to achieve a stable rigid connection after the two frames are aligned.

[0080] For example, the flexible connector 600 can be a chain, wire rope, hook assembly, or other connecting component with a certain degree of flexibility and capable of bearing the weight of the second frame 400. For instance, the two ends of at least two flexible connectors 600 can be respectively hooked to preset hook points (such as lifting lugs, connecting holes, or supports) on the first frame 100 and the second frame 400 to form a flexible pre-connection relationship.

[0081] In this state, the operating equipment (such as the excavator's robotic arm) slowly raises the first frame 100. Once the flexible connector 600 is straightened and bears the weight of the second frame 400, the second frame 400 can naturally suspend under gravity. Because the flexible connector 600 has a certain degree of freedom of movement, the second frame 400 can undergo limited posture adjustments during hoisting, gradually aligning its lower end face or connecting structure with the corresponding connection point of the first frame 100. This process facilitates automatic alignment between the two frames using gravity, thereby reducing the difficulty of manual alignment.

[0082] After the above alignment is completed, the two frames can be finally connected using the rigid fastener 700. The rigid fastener 700 can be a pin, bolt, insert block, or equivalent structure. For example, after the connection holes of the two frames are aligned, a pin is inserted into the connection hole and locked using fasteners (such as nuts, cotter pins, or locking plates), forming a reliable rigid fixing structure between the first frame 100 and the second frame 400. Through this installation method, the flexible connector 600 assists in suspension and automatic alignment, while the rigid fastener 700 provides structural stability after installation. The two functions complement each other, thereby improving the convenience and safety of the assembly process.

[0083] In some embodiments, refer to Figure 3 and Figure 5 The locking mechanism 410 includes a locking member 411 disposed on the second frame 400, and a locking groove 310 that mates with the locking member 411 is provided circumferentially on the hammer 300. For example, the locking member 411 can be a pin, a latch, an elastic buckle, or an equivalent structure thereof, capable of extending into or engaging with the locking groove 310 after the hammer 300 is placed on the receiving surface 560, thereby circumferentially limiting the hammer 300.

[0084] In one possible configuration, the locking element 411 is pivotally mounted on the second frame 400 and can be manually or mechanically engaged or disengaged from the locking groove 310 to lock or release the rammer 300. Through this engagement, the rammer 300, after being placed on the receiving surface 560, can be positioned in a preset location, providing stable support for the rammer 300 from the second frame 400. This improves the safety of the rammer 300 during assembly and disassembly and facilitates accurate alignment of the drive device 200 with the connection points of the rammer 300 during installation.

[0085] In other embodiments, the locking groove 310 can be an annular groove, a partially arc-shaped groove, or multiple discretely distributed grooves to adapt to different locking member 411 structures. The locking member 411 can be made of steel, alloy steel, or a composite material with a certain impact resistance, making it suitable for the working environment of the compaction device.

[0086] In some embodiments, refer to Figure 2 and Figure 6 The first frame 100 is provided with a limiting member 110. The limiting member 110 is configured to abut against the second frame 400 when the first frame 100 is lifted by the flexible connector 600 and the first frame 100 is tilted away from the operating equipment, thereby guiding the alignment of the first frame 100 and the second frame 400. Exemplarily, the limiting member 110 can be a protrusion, a limiting plate, a guide block, a guide flange, or a structural component with equivalent function, capable of forming a defined contact surface between the two frames, thereby guiding the posture of the second frame 400 during lifting.

[0087] In the specific structure, multiple flexible connectors 600 (such as chains, wire ropes, or webbing) are respectively connected to the preset connection points of the first frame 100 and the second frame 400. However, the flexible connectors 600 may have certain length differences during manufacturing and use, making it difficult for the second frame 400 to automatically achieve an ideal horizontal alignment state solely by gravity after being lifted. With the help of the limiting member 110, when the first frame 100 is tilted away from the operating equipment by the movement of the robotic arm, the limiting member 110 can contact the second frame 400 at a specific angle, causing the second frame 400 to generate a similar tilt angle, thereby gradually bringing the docking surfaces of the two frames closer to a consistent spatial posture, which is beneficial for achieving subsequent precise alignment.

[0088] After the alignment is completed, the drive device 200 can be connected to the hammer 300, and the driving force of the drive device 200 can be used to move the hammer 300 closer to the first frame 100. Since the hammer 300 was previously fixed relative to the second frame 400 by the locking mechanism 410, the movement of the hammer 300 can drive the second frame 400 to move closer to the first frame 100. Under the posture constraint formed by the limiting member 110, the second frame 400 will move along a path closer to the target alignment direction until it contacts or approaches the docking position of the first frame 100.

[0089] After the two frames are connected, the first frame 100 and the second frame 400 can be rigidly connected by rigid fasteners 700 (such as pins, bolt fittings, connecting plate assemblies, etc.). After the above rigid fixing is completed, the locking mechanism 410 on the second frame 400 can be released, allowing the tamping hammer 300 to separate from the second frame 400. At this time, the entire compaction device forms a fixed frame, and the tamping hammer 300 can move relative to the compaction seat 500 under the drive of the drive device 200, thereby performing the compaction operation.

[0090] In other embodiments, the installation position of the limiting member 110 can be set at a lateral position, a lower position, or a position near the docking area of ​​the first frame 100 to adapt to different structural layouts. The contact method between the limiting member 110 and the second frame 400 can be surface contact, thereby facilitating the restriction and support of the second frame 400 and guiding the second frame 400 to align with the first frame 100. In addition, the limiting member 110 can also change its extension amount or angle through an adjustable structure (such as thread adjustment, pin adjustment, slide groove adjustment) to adapt to different frame processing errors or on-site installation conditions.

[0091] With the above structural design, the heavier second frame 400 can achieve a more stable and controllable posture during installation with the help of the limiting member 110. At the same time, the tilting action of the first frame 100 can achieve alignment guidance, which helps to reduce manual intervention and improve the stability and convenience of the installation process.

[0092] For example, the limiting member 110 can be a support plate. The support plate has a plate-like structure and is fixedly mounted on the first frame 100. When the first frame 100 tilts, the second frame 400 gradually approaches the support plate under the action of the flexible connector 600, and forms surface contact with the planar area of ​​the support plate. Through the above contact relationship, the second frame 400 can establish a positioning constraint relative to the support plate, thereby making the second frame 400 and the first frame 100 tend to be aligned, which facilitates subsequent performance of attitude-related operations.

[0093] In some embodiments, refer to Figure 2 and Figure 6 The first frame 100 includes a mounting portion 120 for connecting to an operating device, and a limiting member 110 is disposed on the first frame 100 on a side opposite to the mounting portion 120. Since the operating device is located on one side of the mounting portion 120 and the limiting member 110 is located on the opposite side of the first frame 100, it is beneficial to provide a sufficiently large contact surface for the second frame 400 during installation, thereby facilitating contact between the second frame 400 and the limiting member 110 and obtaining positioning guidance.

[0094] In some embodiments, the limiting member 110 extends from the first frame 100 toward the second frame 400, and the second frame 400 is provided with a guide groove 430 that cooperates with the limiting member 110. Exemplarily, the guide groove 430 extends along the height direction of the second frame 400 so that during installation, the limiting member 110 can slide or contact along the guide groove 430, thereby guiding the second frame 400 to adjust its posture in a predetermined direction to achieve alignment with the first frame 100.

[0095] Through the cooperation structure of the limiting member 110 and the guide groove 430, when the first frame 100 tilts or moves, the second frame 400 can swing or be finely adjusted in a controlled manner along the height direction of the guide groove 430, thereby reducing misalignment caused by the length difference of the flexible connector 600, which is beneficial to improving the accuracy and stability of installation.

[0096] In other embodiments, the guide groove 430 can be a straight groove, an arc groove, or a sliding groove structure with rolling elements inside the groove. The limiting member 110 can also be a convex strip, a guide pin, or a sliding block, etc., all of which can guide the posture of the second frame 400 and are alternative or equivalent solutions of this disclosure.

[0097] In some embodiments, refer to Figure 3 and Figure 5The isolation element 420 includes an elastic airbag 421; the tamping seat 500 is provided with an inflation structure 510, which is in communication with the elastic airbag 421; the inflation structure 510 includes a piston rod 511, at least a portion of which protrudes from the bearing surface 560, and the piston rod 511 is configured to push gas into the elastic airbag 421 to inflate it when it is pressed by the tamping hammer 300.

[0098] When the tamping hammer 300 impacts the bearing surface 560, the expansion of the elastic airbag 421 causes the isolating member 420 to protrude towards the end of the compaction seat 500 away from the bearing surface 560, thus forming a closed or semi-closed area around the compaction seat 500. This helps to slow down the rapid expulsion of air when compacting relatively dry soil surfaces, thereby reducing dust. After the tamping hammer 300 leaves the bearing surface 560, the elastic airbag 421 can retract to a position flush with the compaction seat 500, which helps to prevent negative pressure dust suction when lifting the compaction seat 500, while maintaining the structural integrity of the compaction seat 500.

[0099] In specific implementations, an elastic element 512 (such as a spring, rubber ring, etc.) can be provided between the piston rod 511 and the piston chamber 550 to assist the piston rod 511 in resetting after the external force is released; the piston rod 511 and the piston chamber 550 can achieve reliable movement through sliding or rolling fit. The piston rod 511 can be made of steel, aluminum alloy, or wear-resistant composite material, and the elastic airbag 421 can be made of rubber, polyurethane, or other inflatable elastic material.

[0100] In addition, the connection between the inflatable structure 510 and the elastic airbag 421 can be achieved by using a flexible pipe, air valve, or guide channel, so that gas can flow smoothly into the elastic airbag 421.

[0101] Through the above structural design, the isolation component 420 can expand according to the action of the tamping hammer 300 during the compaction process, thereby controlling the air discharge and dust raising. At the same time, it can retract after the tamping hammer 300 leaves, taking into account both functionality and ease of operation, and providing technical support for compaction operations.

[0102] In some embodiments, refer to Figure 3 and Figure 5 The compaction seat 500 is provided with a mounting groove 520, and the elastic airbag 421 is housed within the mounting groove 520, with the opening edge of the elastic airbag 421 sealingly connected to the groove wall of the mounting groove 520. Exemplarily, the elastic airbag 421 can be fixed within the mounting groove 520 by adhesives, clips, bolts, or other sealing methods. The sealing connection between the opening edge of the elastic airbag 421 and the groove wall of the mounting groove 520 prevents dust, sand, or other impurities from entering the mounting groove 520 during compaction, thereby reducing contamination of the internal inflation structure 510 or piston rod 511 and improving the long-term reliability of the device.

[0103] In other embodiments, the sealing connection between the mounting groove 520 and the elastic airbag 421 can also employ elastic compression, ring groove pressing, or O-ring sealing, etc., to achieve similar dustproof and sealing effects. Through the above design, the elastic airbag 421 can maintain normal movement when expanding or retracting, while keeping the interior of the mounting groove 520 clean, thus facilitating the long-term reliable use of the tamping seat 500.

[0104] In some embodiments, the compaction base 500 is provided with a pressure relief hole 530. One end of the pressure relief hole 530 communicates with the elastic airbag 421, and the other end extends to the side of the compaction base 500 and is provided with a valve 540. The valve 540 is configured to release gas when the pressure inside the elastic airbag 421 exceeds a preset value, and the valve 540 is also configured to replenish gas to the elastic airbag 421. In practical applications, when the compaction device acts on a hard or incompressible foundation, the elastic airbag 421 may generate high internal pressure during expansion due to space constraints. At this time, the pressure relief hole 530 can release some gas through the valve 540, thereby alleviating the potential impact of excessive internal pressure on the structure of the elastic airbag 421. At the same time, by replenishing gas to the elastic airbag 421, its internal pressure can be maintained within a suitable range to ensure the normal extension and retraction of the isolation member 420 during the compaction operation.

[0105] For example, valve 540 can be a one-way vent valve, a two-way adjustable valve, a spring-loaded pressure regulating valve, or an equivalent structure thereof. The pressure relief orifice 530 can be a straight through hole, an arc groove, or a pipe to facilitate the smooth discharge or replenishment of gas. Through this structural arrangement, the compaction seat 500 can automatically adjust the pressure of the elastic airbag 421 under different foundation conditions, which helps ensure the functionality of the isolating element 420 and the safety of device operation, while preventing overpressure from causing damage to the elastic airbag 421.

[0106] In some embodiments, refer to Figure 3 and Figure 4 The tamping seat 500 is provided with a piston cavity 550, and the piston rod 511 is movably disposed within the piston cavity 550. Exemplarily, the piston rod 511 can slide or roll along the longitudinal direction of the piston cavity 550, thereby pushing the gas flow or regulating the gas pressure within the piston cavity 550 under the action of the tamping hammer 300. The fit between the piston cavity 550 and the piston rod 511 can be a sliding fit, a rolling fit, or a low-friction self-resetting structure, so that after the tamping hammer 300 leaves the bearing surface 560, the piston rod 511 can return to protruding from the bearing surface 560 under the action of the elastic element 512 or gas pressure.

[0107] For example, the piston chamber 550 can be arranged along the thickness direction of the compaction seat 500, and form a sealing or guiding structure with the piston rod 511 through a sealing ring, guide sleeve or sliding groove to ensure the airtightness and guiding stability of the piston rod 511 during movement. The piston rod 511 can be made of steel, aluminum alloy or composite material, and the piston chamber 550 can be made of casting, welded metal plate or engineering plastic molded part.

[0108] With the above configuration, when the piston rod 511 is subjected to the downward pressure of the hammer 300, it can push the gas in the piston chamber 550 into the elastic air bag 421, causing the isolation member 420 to expand. When the pressure is released, the piston rod 511 returns to its original position under the action of the elastic member 512 and the gas pressure, which is beneficial for the isolation member 420 to automatically extend and retract with the movement of the hammer 300, thereby realizing the adjustment function of dust protection.

[0109] In some embodiments, an elastic element 512 is provided between the piston rod 511 and the piston chamber 550; the piston rod 511 is configured to protrude from the bearing surface 560 under the combined action of the elastic element 512 and the gas pressure in the piston chamber 550.

[0110] Specifically, when the tamping hammer 300 leaves the bearing surface 560 or is not under pressure, the elastic element 512 provides an upward pushing force to the piston rod 511. Meanwhile, the gas pressure within the piston chamber 550, through the reaction of the inflation structure 510 or the elastic air bladder 421, also pushes the piston rod 511. The combined effect of the elastic element 512 and the gas pressure allows the piston rod 511 to reliably protrude from the bearing surface 560, thereby causing the isolation element 420 or the elastic air bladder 421 to extend along with the movement of the tamping hammer 300, thus creating a protective barrier against ground dust.

[0111] The stiffness, length, or material of the elastic element 512 can be adjusted according to the required rebound force of the piston rod 511 and the expansion amount of the isolation element 420 to adapt to the requirements of different soil hardness or compaction conditions.

[0112] In some embodiments, refer to Figure 3 and Figure 4 The piston chamber 550 is provided with a first magnetic element 551, and the piston rod 511 is provided with a second magnetic element 511a. The first magnetic element 551 and the second magnetic element 511a attract each other. The piston rod 511 is configured to overcome the attraction between the first magnetic element 551 and the second magnetic element 511a under the combined action of the elastic element 512 and the gas pressure in the elastic air bladder 421, thereby protruding out of the receiving surface 560.

[0113] Specifically, when the elastic element 512 provides a certain restoring force and the internal pressure of the elastic airbag 421 reaches a preset value, the combined force of the two can overcome the adsorption force between the first magnetic element 551 and the second magnetic element 511a, causing the piston rod 511 to move upward along the piston cavity 550 and protrude out of the bearing surface 560, thereby pushing the isolation element 420 to extend, achieving isolation and protection of dust during the compaction process.

[0114] To prevent excessive magnetic force from preventing the piston rod 511 from failing to reset, a gap is provided between the first magnetic component 551 and the second magnetic component 511a to keep the adsorption force within the design range. The required adsorption force can be achieved by adjusting the material, size, or magnetization intensity of the magnetic components. In case of malfunction, such as when the elastic airbag 421 ruptures or the air pressure is insufficient, the combined force of the elastic component 512 and the gas pressure is insufficient to overcome the magnetic attraction, and the piston rod 511 cannot protrude from the receiving surface 560, thus forming a "fault self-locking" state. This design can prevent the isolating component 420 from accidentally extending when the air pressure is abnormal or the device malfunctions, thereby preventing dust, sand, or other impurities from entering the piston chamber 550 through the damaged location, which is beneficial for protecting the internal structure and improving the long-term reliability of the compaction device.

[0115] The magnetic component can take the form of a ring magnet, cylindrical magnet, bar magnet, or other equivalent magnetic structure. Similar reset control and fault-locking effects can be achieved by adjusting the magnetic force, gap, or arrangement. Furthermore, alternative solutions such as helical springs or compressed rubber can be used to achieve the same reset and safety functions.

[0116] In some embodiments, when the piston rod 511 is fully housed within the compaction seat 500, the distance between the first magnetic element 551 and the second magnetic element 511a is greater than 0. Exemplarily, this distance can be achieved by designing the thickness of the magnetic elements, the protrusion amount of the piston rod 511, or the fixed position of the magnetic elements. By setting this distance, even if the piston rod 511 is fully retracted, the first magnetic element 551 and the second magnetic element 511a will not directly contact each other, thereby avoiding the problem of the piston rod 511 sticking or failing to reset due to excessive magnetic force.

[0117] By maintaining an appropriate distance, the piston rod 511 can smoothly protrude from the receiving surface 560 under the action of the elastic element 512 and gas pressure, realizing the extension and retraction function of the isolation element 420. At the same time, in the event of insufficient gas pressure or failure of the elastic element 512, the piston rod 511 can still form a fault self-locking state to prevent the isolation element 420 from extending unexpectedly, thereby improving the safety and reliability of the device.

[0118] It should be understood that when disassembling the first frame 100 and the second frame 400, the operator usually first places the tamping hammer 300 on the bearing surface 560 of the compaction seat 500, so that the tamping hammer 300, the compaction seat 500, and the second frame 400 form a relatively fixed integral structure during the disassembly process. In this state, the elastic airbag 421 will be inflated and expand outward, forming a circumferentially protruding contact part at the end of the compaction seat 500 away from the bearing surface 560.

[0119] Structurally, after the elastic airbag 421 expands, its outer surface will form a greater frictional contact with the ground or transportation device (such as a trolley pallet, a transport platform or a forklift fork), and the contact pressure will be increased; the change in the contact surface makes the support of the compaction seat 500 more stable in the vertical direction, which is conducive to improving the overall anti-slip capability.

[0120] Based on the aforementioned structural changes, when the second frame 400, the compaction seat 500, and the tamping hammer 300 are placed on the ground or in a transport device as a whole, the contact area formed by the outward expansion of the elastic airbag 421 is under pressure, which increases the friction between the compaction seat 500 and the contact surface. This increased friction is more beneficial in reducing slippage during transportation or movement compared to the traditional direct contact of a metal surface with the ground, thereby ensuring the stability of the second frame 400 as a whole under conditions of acceleration changes or uneven road surfaces.

[0121] Therefore, during the disassembly and transportation phase, the outward convexity of the elastic airbag 421 ensures a more stable contact between the compaction seat 500 and the ground or transportation device, which helps improve the stability of the second frame 400 and its load-bearing components during movement.

[0122] According to a second aspect of this application, this application provides a road compaction method, employing the road compaction device in the above embodiments, comprising the following steps:

[0123] Connect the first frame 100 to the operating equipment; place the compaction seat 500 and the second frame 400 in the position to be compacted; place the hammer 300 on the compaction seat 500 and fix it to the second frame 400; lower the first frame 100 so that the drive device 200 is connected to the hammer 300; connect the second frame 400 to the first frame 100; use the drive device 200 to drive the hammer 300 to repeatedly strike the bearing surface 560 of the compaction seat 500 to compact the ground.

[0124] Connecting the first frame 100 to the operating equipment: The first frame 100 is detachably connected to the operating equipment (such as an excavator, loader or other mobile platform with a robotic arm) to drive the first frame 100 to move relative to the ground, providing power and position control for subsequent installation and compaction operations.

[0125] Arrange the compaction base 500 and the second frame 400: Place the compaction base 500 and the second frame 400 in the position to be compacted. This step can be completed manually, by moving with a trolley, or by using equipment to assist in placement, so that the compaction base 500 is in a stable supported state on the ground.

[0126] Place and fix the rammer 300: Place the rammer 300 on the compaction seat 500 and fix it to the second frame 400. Use the locking mechanism 410 or positioning component to stably position the rammer 300. This helps to keep the position of the rammer 300 relative to the second frame 400 stable during installation and operation, while reducing operational risks.

[0127] Lowering the first frame 100 and connecting the drive device 200 to the rammer 300: The first frame 100 is lowered by controlling the operation equipment, so that the drive device 200 is connected to the rammer 300, thereby realizing the power transmission from the drive device 200 to the rammer 300.

[0128] Connecting the second frame 400 to the first frame 100: The second frame 400 and the first frame 100 are aligned and rigidly fixed using a flexible connector 600 and a rigid fastener 700. The flexible connector 600 provides initial pre-connection and gravity-assisted alignment, while the rigid fastener 700 completes the final rigid connection, which helps to reduce installation difficulty and improve installation safety.

[0129] The compaction operation is performed by driving the hammer 300, which is driven by the drive device 200 to repeatedly strike the bearing surface 560 of the compaction seat 500, thereby compacting the ground. The impact frequency, stroke, or force of the hammer 300 can be adjusted according to different foundation conditions to achieve the desired compaction effect. Simultaneously, the isolation component 420 and the elastic airbag 421 can automatically extend and retract according to the movement of the hammer 300, which helps reduce dust stirring.

[0130] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A road surface compaction device, characterized in that, include: The first frame (100) is configured to be detachably connected to the operating equipment; A drive unit (200) is disposed on the first frame (100); A ramming hammer (300) is detachably connected to the drive device (200); The second frame (400) is detachably connected to the lower part of the first frame (100); and A tamping seat (500) is disposed on the second frame (400), and the tamping seat (500) is provided with a bearing surface (560) for supporting the tamping hammer (300) when the tamping hammer (300) is separated from the driving device (200); The tamping hammer (300) is located between the first frame (100) and the second frame (400); The tamping seat (500) has an isolation member (420) at one end away from the bearing surface (560), and the isolation member (420) extends continuously along the circumference of the tamping seat (500); the isolation member (420) is configured to protrude from the end of the tamping seat (500) away from the bearing surface (560) when the hammer (300) strikes the bearing surface (560), and is flush with the tamping seat (500) away from the bearing surface (560) when the hammer (300) moves away from the bearing surface (560).

2. The road compaction device according to claim 1, characterized in that, The second frame (400) is provided with a locking mechanism (410), which is used to lock the hammer (300) to the second frame (400) when the hammer (300) is separated from the drive device (200); And / or, a flexible connector (600) and a rigid fastener (700) are provided between the first frame (100) and the second frame (400); the flexible connector (600) is used to connect the first frame (100) and the second frame (400), and the flexible connector (600) is configured to align the first frame (100) and the second frame (400) under gravity when the second frame (400) is lifted by the first frame (100); the rigid fastener (700) is configured to rigidly connect and fix the first frame (100) and the second frame (400) after the first frame (100) and the second frame (400) are aligned.

3. The road compaction device according to claim 2, characterized in that, The locking mechanism (410) includes a locking member (411) disposed on the second frame (400), and the ram (300) is provided with a locking groove (310) in the circumferential direction that cooperates with the locking member (411).

4. A road compaction device according to claim 2, characterized in that, The first frame (100) is provided with a limiting member (110), which is configured to abut against the second frame (400) when the first frame (100) is lifted by the flexible connector (600) and the first frame (100) is tilted away from the operating device, so as to guide the first frame (100) and the second frame (400) to be aligned.

5. A road compaction device according to claim 4, characterized in that, The first frame (100) includes a mounting portion (120) for connection with an operating device, and the limiting member (110) is disposed on the first frame (100) on a side opposite to the mounting portion (120); And / or, the limiting member (110) extends from the first frame (100) toward the second frame (400), and the second frame (400) is provided with a guide groove (430) that cooperates with the limiting member (110).

6. A road compaction device according to claim 2, characterized in that, The isolation element (420) includes an elastic airbag (421); An inflatable structure (510) is provided inside the compaction seat (500), and the inflatable structure (510) is connected to the elastic airbag (421); The inflatable structure (510) includes a piston rod (511) at least a portion of which protrudes from the receiving surface (560) and is configured to push gas into the elastic airbag (421) to inflate it when pressed by the ram (300).

7. A road compaction device according to claim 6, characterized in that, The tamping seat (500) is provided with an installation groove (520), the elastic airbag (421) is housed in the installation groove (520), and the opening edge of the elastic airbag (421) is sealed to the groove wall of the installation groove (520). And / or, the compaction seat (500) is provided with a pressure relief hole (530), one end of which is connected to the elastic airbag (421), and the other end extends to the side of the compaction seat (500) and is provided with a valve (540); the valve (540) is configured to release gas when the pressure in the elastic airbag (421) exceeds a preset value, and the valve (540) is also configured to replenish gas to the elastic airbag (421); And / or, the tamping seat (500) is provided with a piston chamber (550), and the piston rod (511) is movably disposed in the piston chamber (550).

8. A road compaction device according to claim 7, characterized in that, An elastic element (512) is provided between the piston rod (511) and the piston chamber (550); The piston rod (511) is configured to protrude from the bearing surface (560) under the combined action of the elastic member (512) and the gas pressure in the piston chamber (550).

9. A road compaction device according to claim 8, characterized in that, The piston chamber (550) is provided with a first magnetic element (551), and the piston rod (511) is provided with a second magnetic element (511a). The first magnetic element (551) and the second magnetic element (511a) are attracted to each other; wherein: The piston rod (511) is configured to overcome the adsorption force between the first magnetic element (551) and the second magnetic element (511a) under the combined action of the elastic element (512) and the gas pressure in the elastic air bladder (421), thereby protruding from the receiving surface (560). And / or, when the piston rod (511) is fully housed within the tamping seat (500), the distance between the first magnetic element (551) and the second magnetic element (511a) is greater than 0.

10. A method for compacting road surfaces, characterized in that, The road compaction device according to any one of claims 1 to 9 includes the following steps: Connect the first frame (100) to the operating equipment; Place the tamping base (500) and the second frame (400) in the position to be tamped; The tamping hammer (300) is placed on the tamping seat (500) and fixedly connected to the second frame (400); The first frame (100) is lowered so that the drive device (200) is connected to the ram (300); Connect the second rack (400) to the first rack (100); The driving device (200) drives the rammer (300) to repeatedly strike the bearing surface (560) of the tamping seat (500) to compact the ground.

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