A road foundation compaction device

Abstract

This invention relates to the field of road foundation construction technology, specifically a road foundation compaction device. The device includes a compaction unit comprising a mounting frame, two sets of bushings disposed within the mounting frame, a support shaft rotatably disposed within the two sets of bushings, and a vibration assembly disposed outside the support shaft. The mounting frame serves as the adjustment support foundation for the vibration assembly. The vibration assembly provides vibration force for vibratory compaction of the road foundation. The beneficial effects of this invention are that by arranging several independently extendable compaction cylinders and corresponding closed-loop adjustment structures side-by-side on the support shaft, multi-segment coordinated compaction operations are achieved. Each compaction cylinder relies on internal adjustment components, control components, and hydraulic vibrators to adjust the vibration force. The road surface undulation height of the compaction cylinder's passage is converted in real-time into the overlapping area of ​​the jet orifices through the extension / retraction, thereby steplessly adjusting the vibration force generated by the corresponding hydraulic motor.

Description

Technical Field

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

[0002] In existing road paving technologies, a subgrade soil needs to be laid before asphalt or cement is laid to improve the load-bearing capacity of the road foundation. The current subgrade soil laying method still involves transporting the subgrade soil to the road by transport vehicles, then bulldozing the piled subgrade soil, and finally compacting the subgrade soil with a road roller. Traditional subgrade soil compaction equipment mainly relies on large road rollers or tampers. However, these traditional subgrade soil compaction equipment have some limitations. For example, common straight-tube road rollers cannot be locally adjusted according to the specific road surface conditions, resulting in uneven compaction. While tampers can perform local compaction, their efficiency is low and it is difficult to meet the needs of large-scale construction.

[0003] In addition, traditional soil compaction equipment also faces challenges in some special scenarios, such as the construction and compaction of road foundations in ash dumps. Since ash dumps are mainly used to store fly ash and slag discharged from power plants, the degree of ground compaction is crucial to prevent dust and ensure the stability of the ash dump. Due to the special environment and material characteristics of ash dumps, traditional soil compaction equipment cannot provide sufficient adaptability and efficiency. Summary of the Invention

[0004] In view of the problems existing in the above or prior art, the present invention is proposed.

[0005] Therefore, the purpose of this invention is to provide a road foundation construction compaction device that can adjust the vibration intensity according to the actual foundation conditions to improve compaction efficiency and quality, reduce construction time and labor input, and avoid rework and material waste caused by insufficient or excessive compaction.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a road foundation construction compaction device, which includes a compaction unit, including an installation frame, two sets of bushings disposed inside the installation frame, a support shaft rotatably disposed inside the two sets of bushings, and a vibration component disposed outside the support shaft;

[0007] The mounting frame serves as the supporting foundation for adjusting the vibration assembly; the vibration assembly is used to provide vibration force for vibratory compaction of the road subgrade.

[0008] The vibration assembly includes several sets of fixed sleeves disposed on the outside of the support shaft, adjusting components respectively disposed on the outside of the several sets of fixed sleeves, control components disposed inside the adjusting components, a compaction cylinder sleeved on the outside of the adjusting components, and a hydraulic vibration component disposed inside the compaction cylinder.

[0009] The adjusting component includes three sets of fixing seats arranged in a ring on the outside of the fixing sleeve, and each of the three sets of fixing seats is fitted with a telescopic outer tube.

[0010] The control component includes a fixed ring fixedly disposed on the inner wall of the telescopic outer tube, a control tank embedded inside the fixed ring, a first piston slidably disposed inside the control tank, a second piston slidably disposed inside the control tank and below the first piston, a flow control valve tube disposed inside the telescopic outer tube, a fixed jet plate fixedly disposed inside the flow control valve tube, a rotating ring rotatably disposed inside the flow control valve tube, and an adjustable jet plate embedded inside the rotating ring.

[0011] As a preferred embodiment of the road foundation construction compaction device of the present invention, the adjusting component further includes a telescopic inner rod slidably disposed inside the telescopic outer tube, a connecting block is fixedly connected to the top end of the telescopic inner rod, and a spring is fixedly disposed between the connecting block and the side of the fixed seat that are close to each other.

[0012] As a preferred embodiment of the road foundation construction compaction device of the present invention, the control component further includes a push plate fixedly disposed on the outside of the rotating ring, a fixing plate fixedly disposed inside the telescopic outer tube, and an adjusting pipe fixedly connected inside the fixing plate;

[0013] A second push rod is fixedly connected to the bottom of the second piston, and a third piston is fixedly installed at the bottom end of the second push rod. The third piston is slidably installed inside the adjusting tube. The bottom end of the adjusting tube is connected to an arc-shaped tube. A fourth piston is slidably installed inside the arc-shaped tube. An arc-shaped rod is fixedly connected to the outside of the fourth piston. The end of the arc-shaped rod away from the fourth piston is connected to the push plate.

[0014] In a preferred embodiment of the road foundation construction compaction device of the present invention, a first push rod is provided on the top of the first piston, and the end of the first push rod away from the first piston is connected to the telescopic inner rod.

[0015] In a preferred embodiment of the road foundation construction compaction device of the present invention, the inner wall of the compaction cylinder is fixedly connected to the side of the connecting block away from the telescopic inner rod, and the contact surface between the connecting block and the compaction cylinder is set to be arc-shaped.

[0016] In a preferred embodiment of the road foundation construction compaction device of the present invention, the adjustable jet plate and the fixed jet plate are in contact with each other, and both the adjustable jet plate and the fixed jet plate are provided with jet holes in corresponding positions.

[0017] As a preferred embodiment of the road foundation construction compaction device of the present invention, the longitudinal cross-section of the control tank is convex, and the interior of the control tank, located between the sides of the first piston and the second piston that are close to each other, is filled with hydraulic oil.

[0018] As a preferred embodiment of the road foundation construction compaction device of the present invention, the hydraulic vibrating component includes three sets of transmission supports arranged in a ring inside the compaction cylinder. A hydraulic motor is fixedly installed on the side of each of the three sets of transmission supports away from the compaction cylinder. An eccentric cam is installed at the output end of each of the three sets of hydraulic motors. A circulating oil pump is installed on the outside of each of the three sets of fixed supports.

[0019] The input end of the circulating oil pump is connected to an oil inlet pipe, and the end of the oil inlet pipe away from the circulating oil pump is connected to the flow control valve pipe. The output end of the circulating oil pump is connected to an oil outlet pipe, and the end of the oil outlet pipe away from the circulating oil pump is connected to the oil inlet end of the hydraulic motor. The end of the flow control valve pipe away from the oil inlet pipe is connected to an oil delivery pipe, and the end of the oil delivery pipe away from the flow control valve pipe is connected to the oil outlet end of the hydraulic motor.

[0020] In a preferred embodiment of the road foundation construction compaction device of the present invention, the transmission support and the connecting block are separated by an included angle, and the included angle is less than 60 degrees.

[0021] In a preferred embodiment of the road foundation construction compaction device of the present invention, the oil outlet pipe, the oil inlet pipe, and the flow control valve pipe are all filled with hydraulic oil.

[0022] The beneficial effects of this invention are as follows: By arranging several sets of independently telescopic compaction cylinders and corresponding closed-loop adjustment structures in parallel on the same support shaft, this invention achieves multi-segment coordinated compaction of road foundation construction. Each compaction cylinder relies on internal adjustment components, control components, and hydraulic vibration components to adjust the vibration force. The undulation height of the road surface through which the compaction cylinder passes is converted into the overlapping area of ​​the jet holes in real time through the telescopic amount, thereby steplessly adjusting the flow rate of the corresponding hydraulic motor and the vibration force of the eccentric cam. Moreover, the multiple compaction cylinders are independent of each other and do not interfere with each other, and can simultaneously conform to the undulating road surface at different heights, each outputting a vibration force that precisely matches the degree of undulation of the corresponding road surface, avoiding local over-compression or under-compression. Thus, uniform and efficient compaction and leveling of different undulating road surfaces can be completed in one rolling motion, which can significantly shorten the construction cycle and reduce manual intervention and energy consumption. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. 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.

[0024] Figure 1 This is a schematic diagram of the overall structure of a road foundation construction compaction device according to the present invention.

[0025] Figure 2 This is a front and rear sectional view of a road foundation construction compaction device according to the present invention.

[0026] Figure 3 This is a cross-sectional view of the vibration component of a road foundation construction compaction device according to the present invention.

[0027] Figure 4 This is a partial structural diagram of the vibration component of a road foundation construction compaction device according to the present invention.

[0028] Figure 5 This is a front-to-back sectional view of the vibration component of a road foundation construction compaction device according to the present invention.

[0029] Figure 6 This is a left-right cross-sectional view of the vibration component of a road foundation construction compaction device according to the present invention.

[0030] Figure 7 This invention relates to a road foundation compaction device. Figure 6 Enlarged schematic diagram of the structure at point A in the middle.

[0031] Figure 8 This is a schematic diagram showing the connection state between the fixed jet plate and the adjustable jet plate of a road foundation construction compaction device according to the present invention.

[0032] Figure 9 This is an exploded view of the installation frame structure of a road foundation construction compaction device according to the present invention.

[0033] Figure 10 This is a cross-sectional view of the arc-shaped pipe connection state of a road foundation construction compaction device according to the present invention.

[0034] In the diagram: 1. Compaction unit; 11. Mounting frame; 12. Bushing; 13. Support shaft; 14. Vibration assembly; 141. Fixed sleeve; 142. Adjusting component; 1421. Fixed seat; 1422. Telescopic outer tube; 1423. Telescopic inner rod; 1424. Connecting block; 1425. Spring; 143. Control component; 1431. Fixing ring; 1432. Control tank; 1433. First piston; 1434. First push rod; 1435. Second piston; 1436. Second push rod; 1437. Flow control valve pipe; 1438. Fixed jet Plate; 1439, Rotating ring; 14310, Adjustable jet plate; 14311, Push plate; 14312, Fixed plate; 14313, Adjusting pipe; 14314, Third piston; 14315, Arc-shaped pipe; 14316, Fourth piston; 14317, Arc-shaped rod; 14318, Jet hole; 144, Compactor cylinder; 145, Hydraulic vibrator; 1451, Transmission support; 1452, Hydraulic motor; 1453, Eccentric cam; 1454, Circulating oil pump; 1455, Oil inlet pipe; 1456, Oil outlet pipe; 1457, Oil delivery pipe. Detailed Implementation

[0035] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0038] Example 1, referring to Figures 1-5 This is the first embodiment of the present invention. This embodiment provides a road foundation construction compaction device, which can achieve one-time compaction of wide foundation by integrating several sets of fixed amplitude vibration components 14 on the support shaft 13. This significantly improves construction efficiency and reduces equipment investment costs. It is particularly suitable for scenarios with high foundation flatness and small undulation. The device includes a compaction unit 1, which includes an installation frame 11, two sets of bushings 12 disposed inside the installation frame 11, a support shaft 13 rotatably disposed inside the two sets of bushings 12, and vibration components 14 disposed outside the support shaft 13.

[0039] Furthermore, the mounting frame 11 serves as a support base for adjusting the vibration assembly 14; the vibration assembly 14 is used to provide vibration force for vibratory compaction of the road subgrade.

[0040] Furthermore, the vibration assembly 14 includes several sets of fixed sleeves 141 disposed on the outside of the support shaft 13, adjusting members 142 respectively disposed on the outside of the several sets of fixed sleeves 141, a control member 143 disposed inside the adjusting member 142, a compaction cylinder 144 sleeved on the outside of the adjusting member 142, and a hydraulic vibration member 145 disposed inside the compaction cylinder 144.

[0041] Furthermore, the adjusting component 142 includes three sets of fixing seats 1421 arranged in a ring on the outside of the fixing sleeve 141, and each of the three sets of fixing seats 1421 is fitted with a telescopic outer tube 1422.

[0042] Furthermore, the control component 143 includes a fixing ring 1431 fixedly disposed on the inner wall of the telescopic outer tube 1422, a control tank 1432 embedded inside the fixing ring 1431, a first piston 1433 slidably disposed inside the control tank 1432, a second piston 1435 slidably disposed inside the control tank 1432 and below the first piston 1433, a flow control valve tube 1437 disposed inside the telescopic outer tube 1422, a fixed jet plate 1438 fixedly disposed inside the flow control valve tube 1437, a rotating ring 1439 rotatably disposed inside the flow control valve tube 1437, and an adjustable jet plate 14310 embedded inside the rotating ring 1439.

[0043] In use, the mounting frame 11 can be connected to an existing road roller to replace the existing road roller structure. Driven by the road roller, the support shaft 13 can rotate continuously within the bushing 12, driving all the vibration components 14 to make circular motion. The hydraulic vibrator 145 in the vibration component 14 generates a fixed amplitude vibration force through constant flow of oil supply. The fixed amplitude vibration force is transmitted to the foundation through the compaction cylinder 144 to achieve continuous rolling compaction.

[0044] In summary, by integrating several sets of fixed-amplitude vibration components 14 on the same support shaft 13, the continuous rotation of the support shaft 13 drives all the compaction cylinders 144 to roll as a whole. The hydraulic motor 1452 drives the eccentric cam 1453 to output a fixed-amplitude vibration force under constant flow. Each compaction cylinder 144 can complete the compaction of a wide foundation in one go without independent adjustment. Mechanical integration replaces the traditional staged compaction. It has a large working width, simple structure and low control cost. It is especially suitable for scenarios with high foundation flatness and small undulation, which can significantly improve construction efficiency and reduce equipment cost investment.

[0045] Example 2, refer to Figures 1-10This is the second embodiment of the invention, which differs from the first embodiment in that it further includes enabling the compaction device to adaptively adjust the magnitude of the vibration force according to the actual undulations of the road foundation, ensuring good contact between the compaction cylinder 144 and the ground, avoiding insufficient or excessive compaction, and improving the automation and adaptability of the compaction operation. In the previous embodiment, a road foundation construction compaction device includes an adjusting member 142. This embodiment further includes a telescopic inner rod 1423 slidably disposed inside the telescopic outer tube 1422. A connecting block 1424 is fixedly connected to the top of the telescopic inner rod 1423, and a spring 1425 is fixedly disposed between the connecting block 1424 and the side of the fixed seat 1421 that are close to each other.

[0046] Furthermore, the control component 143 also includes a push plate 14311 fixedly disposed on the outside of the rotating ring 1439, a fixing plate 14312 fixedly disposed inside the telescopic outer tube 1422, and an adjusting tube 14313 fixedly connected inside the fixing plate 14312.

[0047] Furthermore, a second push rod 1436 is fixedly connected to the bottom of the second piston 1435, and a third piston 14314 is fixedly installed at the bottom end of the second push rod 1436. The third piston 14314 is slidably installed inside the adjusting tube 14313. The bottom end of the adjusting tube 14313 is connected to an arc-shaped tube 14315. A fourth piston 14316 is slidably installed inside the arc-shaped tube 14315. An arc-shaped rod 14317 is fixedly connected to the outside of the fourth piston 14316. The end of the arc-shaped rod 14317 away from the fourth piston 14316 is connected to the push plate 14311.

[0048] Furthermore, a first push rod 1434 is provided on the top of the first piston 1433, and the end of the first push rod 1434 away from the first piston 1433 is connected to the telescopic inner rod 1423.

[0049] Furthermore, the inner wall of the compaction cylinder 144 is fixedly connected to the side of the connecting block 1424 away from the telescopic inner rod 1423, and the contact surface of the connecting block 1424 and the compaction cylinder 144 is set to be arc-shaped.

[0050] Furthermore, the adjustable jet plate 14310 and the fixed jet plate 1438 are fitted together, and both the adjustable jet plate 14310 and the fixed jet plate 1438 are provided with jet holes 14318 that are corresponding to each other.

[0051] Furthermore, the longitudinal cross-section of the control tank 1432 is convex in shape, and the interior of the control tank 1432, located between the sides of the first piston 1433 and the second piston 1435 that are close to each other, is filled with hydraulic oil.

[0052] Furthermore, the hydraulic vibrator 145 includes three sets of transmission supports 1451 arranged in a ring inside the compaction cylinder 144. A hydraulic motor 1452 is fixedly installed on the side of each of the three sets of transmission supports 1451 away from the compaction cylinder 144. An eccentric cam 1453 is provided at the output end of each of the three sets of hydraulic motors 1452. A circulating oil pump 1454 is provided on the outer side of each of the three sets of fixed seats 1421.

[0053] Furthermore, the input end of the circulating oil pump 1454 is connected to an oil inlet pipe 1455, and the end of the oil inlet pipe 1455 away from the circulating oil pump 1454 is connected to a flow control valve pipe 1437. The output end of the circulating oil pump 1454 is connected to an oil outlet pipe 1456, and the end of the oil outlet pipe 1456 away from the circulating oil pump 1454 is connected to the oil inlet end of the hydraulic motor 1452. The end of the flow control valve pipe 1437 away from the oil inlet pipe 1455 is connected to an oil delivery pipe 1457, and the end of the oil delivery pipe 1457 away from the flow control valve pipe 1437 is connected to the oil outlet end of the hydraulic motor 1452.

[0054] In use, when the compaction cylinder 144 rolls with the support shaft 13 and encounters road undulations, the compaction cylinder 144 passively generates a vertical displacement, synchronously driving the connecting block 1424 and the telescopic inner rod 1423 to move closer to or further away from the telescopic outer tube 1422. The first push rod 1434 moves synchronously and in the same direction as the telescopic inner rod 1423. When the telescopic inner rod 1423 moves closer to the inside of the telescopic outer tube 1422, the first push rod 1434 moves synchronously and in the same direction as the telescopic inner rod 1423 and pushes the first piston 1433. The first piston 1433 squeezes hydraulic oil in the convex control tank 1432. The oil pressure sequentially pushes the second piston 1435, the second push rod 1436, and the third piston 14314. Through the third piston 14314, the hydraulic oil in the regulating tube 14313... The thrust is generated and drives the fourth piston 14316 through the arc-shaped tube 14315, which in turn drives the arc-shaped rod 14317 to slide outward along the inside of the arc-shaped tube 14315. The push plate 14311 moves synchronously and in the same direction as the arc-shaped tube 14315 and generates rotational motion, causing the adjustable jet plate 14310 on the rotating ring 1439 to rotate relative to the fixed jet plate 1438. This changes the overlap area between the jet holes 14318 at the corresponding positions of the adjustable jet plate 14310 and the fixed jet plate 1438 in real time. The overlap area directly adjusts the flow capacity of the flow control valve pipe 1437, thereby steplessly changing the oil supply from the circulating oil pump 1454 to the hydraulic motor 1452. This causes the vibration force of the eccentric cam 1453 to increase or decrease in real time with the undulation of the road surface. The greater the undulation, the greater the vibration force generated, thus achieving adaptive compaction of the road surface.

[0055] In summary, the vertical displacement of the compaction cylinder 144 caused by road surface undulations is converted into changes in the opening of the jet orifice 14318, thereby adjusting the oil supply of the hydraulic motor 1452 and achieving automatic adjustment of vibration force. This adaptive adjustment function enables the compaction device to automatically adjust the magnitude of vibration force according to the actual undulations of the road surface without manual intervention, improving the automation and adaptability of compaction operations. When the road surface undulations are large, the device can ensure good contact between the compaction cylinder 144 and the ground, avoiding insufficient compaction due to insufficient vibration force or road damage due to excessive vibration force. By adjusting the vibration force in real time, the compaction operation is made more uniform and efficient, reducing construction time and labor input, while also reducing rework and material waste caused by uneven compaction. It is not only suitable for general road foundation compaction operations, but also plays an important role in special scenarios such as ash disposal sites.

[0056] Example 3, referring to Figures 1-10 This is the third embodiment of the present invention. This embodiment provides a road foundation construction compaction device, which can work in conjunction with multiple independent compaction cylinders 144, adjustment components 142 and control components 143 to achieve wide-span compaction on complex and uneven road surfaces. Each compaction cylinder 144 can independently sense and adapt to undulations of different heights and automatically adjust the vibration force, thereby improving the uniformity and efficiency of compaction. It includes a compaction unit 1, which includes a mounting frame 11, two sets of bushings 12 disposed inside the mounting frame 11, a support shaft 13 rotatably disposed inside the two sets of bushings 12, and a vibration component 14 disposed outside the support shaft 13.

[0057] Furthermore, the mounting frame 11 serves as a support base for adjusting the vibration assembly 14; the vibration assembly 14 is used to provide vibration force for vibratory compaction of the road subgrade.

[0058] It should be noted that the mounting frame 11 is the connecting frame of the roller cylinder on a conventional road roller. The mounting frame 11 is also equipped with a docking structure for mechanical connection with the road roller, etc., and provides a driving source for the movement of the vibration component 14 through mechanical connection with the road roller, etc.

[0059] Furthermore, the vibration assembly 14 includes several sets of fixed sleeves 141 disposed on the outside of the support shaft 13, adjusting members 142 respectively disposed on the outside of the several sets of fixed sleeves 141, a control member 143 disposed inside the adjusting member 142, a compaction cylinder 144 sleeved on the outside of the adjusting member 142, and a hydraulic vibration member 145 disposed inside the compaction cylinder 144.

[0060] It should be noted that the compaction cylinder 144 is a hollow cylindrical structure, the same as the compaction cylinder on existing road rollers, which compacts the road surface under gravity by its own weight.

[0061] Furthermore, the adjusting component 142 includes three sets of fixing seats 1421 arranged in a ring on the outside of the fixing sleeve 141, and each of the three sets of fixing seats 1421 is fitted with a telescopic outer tube 1422.

[0062] Furthermore, the control component 143 includes a fixing ring 1431 fixedly disposed on the inner wall of the telescopic outer tube 1422, a control tank 1432 embedded inside the fixing ring 1431, a first piston 1433 slidably disposed inside the control tank 1432, a second piston 1435 slidably disposed inside the control tank 1432 and below the first piston 1433, a flow control valve tube 1437 disposed inside the telescopic outer tube 1422, a fixed jet plate 1438 fixedly disposed inside the flow control valve tube 1437, a rotating ring 1439 rotatably disposed inside the flow control valve tube 1437, and an adjustable jet plate 14310 embedded inside the rotating ring 1439.

[0063] Furthermore, the adjusting member 142 also includes a telescopic inner rod 1423 that is slidably disposed inside the telescopic outer tube 1422. A connecting block 1424 is fixedly connected to the top of the telescopic inner rod 1423, and a spring 1425 is fixedly disposed between the connecting block 1424 and the side of the fixed seat 1421 that are close to each other.

[0064] Furthermore, the control component 143 also includes a push plate 14311 fixedly disposed on the outside of the rotating ring 1439, a fixing plate 14312 fixedly disposed inside the telescopic outer tube 1422, and an adjusting tube 14313 fixedly connected inside the fixing plate 14312.

[0065] Furthermore, a second push rod 1436 is fixedly connected to the bottom of the second piston 1435, and a third piston 14314 is fixedly installed at the bottom end of the second push rod 1436. The third piston 14314 is slidably installed inside the adjusting tube 14313. The bottom end of the adjusting tube 14313 is connected to an arc-shaped tube 14315. A fourth piston 14316 is slidably installed inside the arc-shaped tube 14315. An arc-shaped rod 14317 is fixedly connected to the outside of the fourth piston 14316. The end of the arc-shaped rod 14317 away from the fourth piston 14316 is connected to the push plate 14311.

[0066] Furthermore, a first push rod 1434 is provided on the top of the first piston 1433, and the end of the first push rod 1434 away from the first piston 1433 is connected to the telescopic inner rod 1423.

[0067] Furthermore, the inner wall of the compaction cylinder 144 is fixedly connected to the side of the connecting block 1424 away from the telescopic inner rod 1423, and the contact surface of the connecting block 1424 and the compaction cylinder 144 is set to be arc-shaped.

[0068] Furthermore, the adjustable jet plate 14310 and the fixed jet plate 1438 are fitted together, and both the adjustable jet plate 14310 and the fixed jet plate 1438 are provided with jet holes 14318 that are corresponding to each other.

[0069] It should be noted that the fixed jet plate 1438 is fixedly installed inside the flow control valve pipe 1437, while the adjustable jet plate 14310 is embedded inside the rotating ring 1439. The fixed jet plate 1438 and the adjustable jet plate 14310 are in close contact with each other, and each has corresponding jet holes 14318. In the initial state, the overlap between the jet holes 14318 of the fixed jet plate 1438 and the adjustable jet plate 14310 is at a basic position. At this time, the oil supply of the hydraulic motor 1452 is at a basic value, and the vibration force is maintained at the initial setting.

[0070] Specifically, when the adjustable jet plate 14310 rotates, the overlap area between the jet holes 14318 on the adjustable jet plate 14310 and the jet holes 14318 on the fixed jet plate 1438 changes. If the road surface is uneven, the compression stroke of the compaction cylinder 144 increases. Through the transmission process described in Example 2, the rotation angle of the adjustable jet plate 14310 increases, and the overlap area of ​​the jet holes 14318 increases, which increases the flow area of ​​the flow control valve pipe 1437. The circulating oil pump 1454 pumps oil to the hydraulic motor. As the flow rate of hydraulic oil supplied by 1452 increases, the rotational speed of hydraulic motor 1452 increases, and the vibration force generated by eccentric cam 1453 also increases, thereby achieving the effect of automatically increasing vibration force according to road surface undulations. Conversely, if the road surface is relatively flat, the compression stroke of compaction cylinder 144 is smaller, the overlap area of ​​jet holes 14318 on adjustable jet plate 14310 and jet holes 14318 on fixed jet plate 1438 decreases, the oil supply of hydraulic motor 1452 decreases, the vibration force decreases, and over-compaction is avoided.

[0071] Furthermore, the longitudinal cross-section of the control tank 1432 is convex in shape, and the interior of the control tank 1432, located between the sides of the first piston 1433 and the second piston 1435 that are close to each other, is filled with hydraulic oil.

[0072] Specifically, the control tank 1432 adopts a convex cross section. Its main function is to disperse the large thrust transmitted by the telescopic inner rod 1423 through the space design that is narrow at the top and wide at the bottom, so that the hydraulic oil forms a more moderate pressure in the control tank 1432. This allows the second piston 1435 to receive a smaller and more stable thrust, thereby smoothly driving subsequent mechanical actions. This can prevent system shocks caused by sudden pressure changes and ensure the accuracy and stability of vibration force adjustment.

[0073] Furthermore, the hydraulic vibrator 145 includes three sets of transmission supports 1451 arranged in a ring inside the compaction cylinder 144. A hydraulic motor 1452 is fixedly installed on the side of each of the three sets of transmission supports 1451 away from the compaction cylinder 144. An eccentric cam 1453 is provided at the output end of each of the three sets of hydraulic motors 1452. A circulating oil pump 1454 is provided on the outer side of each of the three sets of fixed seats 1421.

[0074] Furthermore, the input end of the circulating oil pump 1454 is connected to an oil inlet pipe 1455, and the end of the oil inlet pipe 1455 away from the circulating oil pump 1454 is connected to a flow control valve pipe 1437. The output end of the circulating oil pump 1454 is connected to an oil outlet pipe 1456, and the end of the oil outlet pipe 1456 away from the circulating oil pump 1454 is connected to the oil inlet end of the hydraulic motor 1452. The end of the flow control valve pipe 1437 away from the oil inlet pipe 1455 is connected to an oil delivery pipe 1457, and the end of the oil delivery pipe 1457 away from the flow control valve pipe 1437 is connected to the oil outlet end of the hydraulic motor 1452.

[0075] Specifically, before starting the equipment, sufficient hydraulic oil is pre-stored in the inlet pipe 1455, outlet pipe 1456, delivery pipe 1457, and flow control valve pipe 1437. This prevents the circulating oil pump 1454 from running dry due to lack of oil in the pipelines during system startup, which could damage the equipment. The pre-stored oil ensures that the circulating oil pump 1454 can quickly establish the pressure required by the system, allowing the hydraulic motor 1452 to rapidly obtain sufficient pressure oil and maintain stable vibration output. The pre-stored oil keeps the system in a ready-to-work state, enabling the hydraulic system to respond quickly and adjust the vibration force in a timely manner when the road surface changes, improving the efficiency and quality of compaction operations. It also prevents the circulating oil pump 1454 from sucking in air due to insufficient oil, causing cavitation and potentially damaging the circulating oil pump 1454 and hydraulic motor 1452. Furthermore, the sufficient pre-stored oil ensures the continuity and balance of the oil circulation in the entire hydraulic system, helping to maintain stable oil temperature.

[0076] Furthermore, the transmission support 1451 and the connecting block 1424 are separated at an angle, and the angle is less than sixty degrees.

[0077] Specifically, the angle between the transmission support 1451 and the connecting block 1424 helps to distribute the force transmitted from the compaction cylinder 144 to different directions, making the transmission support 1451 more stable in the process of transmitting force to the hydraulic motor 1452, preventing structural damage caused by excessive force concentration. The presence of the angle can change the relative movement direction between the transmission support 1451 and the connecting block 1424, making the movement of the hydraulic motor 1452 more stable, which helps to improve the adjustment accuracy of vibration force. At the same time, the angle setting can reasonably arrange various components in a limited space, avoid mutual interference between components, and make the structure of the entire vibration assembly 14 more compact and reasonable.

[0078] Furthermore, the outlet pipe 1456, the inlet pipe 1455, and the flow control valve pipe 1437 are all filled with hydraulic oil.

[0079] When in use, the vibratory compaction device is installed on suitable construction machinery and connected to the hydraulic system. The hydraulic pump is started to ensure that the circulating oil pump 1454 starts working, the hydraulic oil circulates in the system, the hydraulic motor 1452 enters the standby state, and the operator controls the construction machinery to move the compaction unit 1 to the foundation position to be compacted. The support shaft 13 starts to rotate in the bushing 12, driving all the compaction cylinders 144 to contact the foundation surface, ready to carry out the compaction operation. The compaction cylinders 144 roll on the foundation surface and begin the compaction operation. The circulating oil pump 1454 starts working, drawing hydraulic oil to circulate in the pipeline and supplying oil to the hydraulic motor 1452 at a constant flow rate, thereby generating a vibration force with a fixed amplitude, which is suitable for efficient continuous compaction of flat foundations.

[0080] When the compaction cylinder 144 encounters road undulations, the resulting vertical displacement generates a telescopic movement relative to the telescopic outer tube 1422 through the connecting block 1424 and the telescopic inner rod 1423. The telescopic inner rod 1423 drives the first push rod 1434 to transmit thrust to the first piston 1433. The first piston 1433 squeezes hydraulic oil within the convex control tank 1432. The oil pressure pushes the second piston 1435 and the second push rod 1436, thereby driving the third piston 14314. The third piston 14314 generates thrust within the adjusting tube 14313, which drives the fourth piston 14316 through the arc-shaped tube 14315. This causes the arc-shaped rod 14317 to rotate and extend, pushing the push plate 14311. Conversely, the telescopic inner rod 1423 can also reverse these movements. The process proceeds sequentially, causing the adjustable jet plate 14310 to rotate in both directions relative to the fixed jet plate 1438. This changes the overlap area between the jet holes 14318 of the fixed jet plate 1438 and the adjustable jet plate 14310, thereby adjusting the oil supply of the hydraulic motor 1452. This allows the vibration force to increase or decrease in real time according to the road surface undulations. Multiple sets of compaction cylinders 144 are arranged axially along the support shaft 13. Each set of compaction cylinders 144 can independently sense and adapt to ground undulations of different heights. The multiple sets of compaction cylinders 144 adjust their vibration force to achieve segmented force adjustment and wide-range compaction. The compaction operation continues, with the compaction cylinders 144 constantly rolling and adjusting the vibration force in real time to ensure uniform compaction. Operators can adjust the moving speed of the construction machinery and equipment appropriately according to the construction progress and foundation conditions.

[0081] In summary, the multi-segment compaction cylinders 144 are arranged axially along the support shaft 13. Each set of compaction cylinders 144 independently senses and adapts to undulations at different heights. The multiple sets of compaction cylinders 144 adjust their vibration force independently. Through the multiple independent compaction cylinders 144 and their respective closed-loop adjustment systems, wide-width compaction of road surfaces with complex undulations can be completed in one pass. Each set of compaction cylinders 144 can independently adjust its vibration force to adapt to different height undulations, improving compaction uniformity and efficiency. It can automatically match the vibration force without manual intervention, reducing over-compaction or under-compaction, reducing rework rate and material waste, shortening the construction cycle, and improving construction quality and efficiency. At the same time, the mechanical hydraulic adjustment drive method can adapt to special scenarios such as the construction of ash field road foundations, with high local reliability, reduced failures, reduced maintenance costs, and ensure long-term stable operation.

[0082] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A road foundation compaction device, characterized in that: include, The compaction unit (1) includes a mounting frame (11), two sets of bushings (12) disposed inside the mounting frame (11), a support shaft (13) rotatably disposed inside the two sets of bushings (12), and a vibration assembly (14) disposed outside the support shaft (13). The mounting frame (11) serves as the supporting base for adjusting the vibration assembly (14); The vibration assembly (14) includes a plurality of fixed sleeves (141) disposed on the outside of the support shaft (13), adjusting members (142) respectively disposed on the outside of the plurality of fixed sleeves (141), a control member (143) disposed inside the adjusting member (142), a compaction cylinder (144) sleeved on the outside of the adjusting member (142), and a hydraulic vibration member (145) disposed inside the compaction cylinder (144). The adjusting component (142) includes three sets of fixing seats (1421) arranged in a ring on the outside of the fixing sleeve (141), and each of the three sets of fixing seats (1421) is fitted with a telescopic outer tube (1422). The control component (143) includes a fixing ring (1431) fixedly disposed on the inner wall of the telescopic outer tube (1422), a control tank (1432) is embedded inside the fixing ring (1431), a first piston (1433) is slidably disposed inside the control tank (1432), a second piston (1435) is slidably disposed inside the control tank (1432) and below the first piston (1433), a flow control valve tube (1437) is disposed inside the telescopic outer tube (1422), a fixed jet plate (1438) is fixedly disposed inside the flow control valve tube (1437), a rotating ring (1439) is rotatably disposed inside the flow control valve tube (1437), and an adjustable jet plate (14310) is embedded inside the rotating ring (1439). The adjusting member (142) also includes a telescopic inner rod (1423) that is slidably disposed inside the telescopic outer tube (1422). The control component (143) includes an adjusting tube (14313). The control component (143) also includes a second push rod (1436) fixedly connected to the bottom of the second piston (1435). A third piston (14314) is fixedly provided at the bottom end of the second push rod (1436). The third piston (14314) is slidably disposed inside the adjusting tube (14313). The bottom end of the adjusting tube (14313) is connected to an arc-shaped tube (14315). A fourth piston (14316) is slidably disposed inside the arc-shaped tube (14315). An arc-shaped rod (14317) is fixedly connected to the outside of the fourth piston (14316). The end of the arc-shaped rod (14317) away from the fourth piston (14316) is connected to a push plate (14311). The top of the first piston (1433) is provided with a first push rod (1434), and the end of the first push rod (1434) away from the first piston (1433) is connected to the telescopic inner rod (1423); The hydraulic vibrating component (145) also includes a hydraulic motor (1452), and the output end of the hydraulic motor (1452) is provided with an eccentric cam (1453). The vertical displacement of the compaction cylinder (144) caused by road surface undulation is converted into a change in the opening of the jet orifice (14318), which in turn adjusts the oil supply of the hydraulic motor (1452) to achieve automatic adjustment of vibration force.

2. The road foundation compaction device as described in claim 1, characterized in that: A connecting block (1424) is fixedly connected to the top of the telescopic inner rod (1423), and a spring (1425) is fixedly provided between the connecting block (1424) and the fixed seat (1421) on the side that are close to each other.

3. The road foundation compaction device as described in claim 2, characterized in that: The control component (143) also includes a push plate (14311) fixedly disposed on the outside of the rotating ring (1439), and a fixing plate (14312) fixedly disposed inside the telescopic outer tube (1422), and an adjusting tube (14313) fixedly connected inside the fixing plate (14312).

4. The road foundation compaction device as described in claim 3, characterized in that: The inner wall of the compaction cylinder (144) is fixedly connected to the side of the connecting block (1424) away from the telescopic inner rod (1423), and the contact surface of the connecting block (1424) and the compaction cylinder (144) is set to be arc-shaped.

5. A road foundation compaction device as described in claim 4, characterized in that: The adjustable jet plate (14310) and the fixed jet plate (1438) are attached to each other, and both the adjustable jet plate (14310) and the fixed jet plate (1438) are provided with jet holes (14318) that are corresponding to each other.

6. A road foundation compaction device as described in claim 5, characterized in that: The longitudinal cross-section of the control tank (1432) is convex, and the interior of the control tank (1432) and the area between the first piston (1433) and the second piston (1435) that are close to each other are filled with hydraulic oil.

7. A road foundation compaction device as described in claim 6, characterized in that: The hydraulic vibrating component (145) includes three sets of transmission supports (1451) arranged in a ring inside the compaction cylinder (144). A hydraulic motor (1452) is fixedly installed on the side of each of the three sets of transmission supports (1451) away from the compaction cylinder (144). An eccentric cam (1453) is provided at the output end of each of the three sets of hydraulic motors (1452). A circulating oil pump (1454) is provided on the outer side of each of the three sets of fixed seats (1421). The input end of the circulating oil pump (1454) is connected to an oil inlet pipe (1455). The end of the oil inlet pipe (1455) away from the circulating oil pump (1454) is connected to the flow control valve pipe (1437). The output end of the circulating oil pump (1454) is connected to an oil outlet pipe (1456). The end of the oil outlet pipe (1456) away from the circulating oil pump (1454) is connected to the oil inlet end of the hydraulic motor (1452). The end of the flow control valve pipe (1437) away from the oil inlet pipe (1455) is connected to an oil delivery pipe (1457). The end of the oil delivery pipe (1457) away from the flow control valve pipe (1437) is connected to the oil outlet end of the hydraulic motor (1452).

8. A road foundation compaction device as described in claim 7, characterized in that: The transmission support (1451) and the connecting block (1424) are separated by an angle, and the angle is less than sixty degrees.

9. A road foundation compaction device as described in claim 8, characterized in that: The oil outlet pipe (1456), the oil inlet pipe (1455), and the flow control valve pipe (1437) are all filled with hydraulic oil.

Images