Highway edge compaction mechanism and compaction operation method

Abstract

The invention discloses a road edge compaction mechanism and a compaction operation method.The road edge compaction mechanism comprises a mechanical compaction mechanism and a hydraulic loading unit, the mechanical compaction mechanism comprises a fixed support, a swing assembly and a compaction execution part, and the fixed support is fixedly connected with a road roller bearing structure; the swing assembly comprises a swing connecting arm and a swing supporting bearing, and one end of the swing connecting arm is in swing connection with the fixing support through the swing supporting bearing. The other end is detachably connected with the compaction execution piece; the hydraulic loading unit comprises an oil cylinder upper support and a power output part, the oil cylinder upper support is fixed on the road roller bearing structure, the upper end of the power output part is hinged to the oil cylinder upper support, and the lower end of the power output part is hinged to the swing connecting arm; the hydraulic loading unit is used for driving the swing connecting arm to swing around the swing supporting bearing. The mechanism is directly integrated on an existing road roller, mechanical continuous compaction can be carried out on a narrow area on the side without dismounting the wave-shaped guardrail, and the backward operation mode of depending on manpower or dismounting the guardrail is thoroughly changed.

Description

Technical Field

[0001] This invention relates to the field of highway construction and maintenance equipment technology, specifically to a highway edge compaction mechanism and compaction operation method. Background Technology

[0002] During the maintenance, major repair, or medium repair of highways and national and provincial trunk roads, corrugated beam guardrails (referred to as corrugated guardrails) are usually installed on both sides of the road surface. While these guardrails play a safety protection role, they also bring great difficulties to the compaction work at the edge of the road surface. Specifically, due to the obstruction of the installed guardrails, there is usually a strip area of ​​about 30 centimeters wide between the edge of the roller wheel and the guardrail post that cannot be directly compacted.

[0003] Currently, there are two main conventional methods to solve this problem: one is to use manual tamping with a rammer, but this method is labor-intensive, inefficient, and it is difficult to guarantee uniform compaction quality; the other is to partially or completely remove the edge guardrails and reinstall them after the compaction work is completed. Although this method can guarantee compaction quality, the process is cumbersome, the construction period is long, the cost is high, and repeated disassembly and reassembly can easily damage the guardrail components.

[0004] Therefore, there is an urgent need for specialized equipment that can efficiently and effectively complete road edge compaction without removing guardrails. Summary of the Invention

[0005] To overcome the shortcomings of existing highway edge compaction techniques, such as low efficiency, high cost, and poor quality, this invention aims to provide a highway edge compaction mechanism with a reasonable structure, independently adjustable and controllable compaction force, easy installation and maintenance, and effective adaptability to complex edge spaces. Its second objective is to provide a compaction method using this mechanism, achieving automation and precise control of edge compaction operations. This compaction mechanism can be directly installed on the side of the vibratory roller's steel wheel, extending into the space beneath the guardrail without removing it, to mechanically compact road edge areas inaccessible to the roller's main steel wheel. This invention can replace traditional inefficient manual compaction or the cumbersome process of dismantling and reassembling guardrails, significantly improving operational efficiency, compaction quality, and economic benefits.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: In a first aspect, a roadside compaction mechanism is installed on the side of the steel wheel of a road roller, comprising a mechanical compaction mechanism and a hydraulic loading unit that provides power to the mechanical compaction mechanism; the mechanical compaction mechanism includes a fixed support, a swing assembly, and a compaction actuator; the fixed support is fixedly connected to the load-bearing structure of the road roller; the swing assembly includes a swing connecting arm and a swing support bearing, one end of the swing connecting arm is swingably connected to the fixed support via the swing support bearing, and the other end of the swing connecting arm is detachably connected to the compaction actuator; the hydraulic loading unit includes a connecting support and a power output component, the connecting support is fixedly connected to the load-bearing structure of the road roller, and both ends of the power output component are hinged to the connecting support and the swing connecting arm, respectively; the hydraulic loading unit is used to drive the swing connecting arm to swing around the swing support bearing, thereby driving the compaction actuator to rise and fall and providing controllable downward pressure.

[0007] As a further improvement of the present invention, the compaction actuator and the swing connecting arm are positioned by a conical surface fit and are fixedly connected by a locking member.

[0008] As a further improvement of the present invention, the swing connecting arm is provided with a mounting hole, the end of the compaction actuator is provided with a mounting positioning cone surface, a cone sleeve is provided in the mounting hole, and the inner wall of the cone sleeve is provided with a cone hole that matches the mounting positioning cone surface.

[0009] As a further improvement of the present invention, the locking member is a bolt, and the end of the compaction actuator is provided with a bolt connection hole, and the compaction actuator is bolted and fixed to the swing connecting arm by the bolt.

[0010] As a further improvement of the present invention, the swing connecting arm is provided with a disassembly hole, the axial direction of the disassembly hole intersects with the axial direction of the mounting hole, and is used to apply an ejection force to the compaction actuator to achieve disassembly.

[0011] As a further improvement of the present invention, the swing connecting arm is provided with a power output component mounting shaft, and the lower end of the power output component is hinged and fixed to the swing connecting arm through the power output component mounting shaft.

[0012] As a further improvement of the present invention, the swing connecting arm is also provided with a swing bearing mounting seat, and the swing support bearing is installed in the swing bearing mounting seat to realize the swing connection between the swing connecting arm and the fixed bracket.

[0013] As a further improvement of the present invention, the hydraulic loading unit further includes a power source, a pressure regulating component, a direction control component, and a locking component; The power source is used to provide a pressure medium to the system; The pressure regulating component is used to adjust and stabilize the downward pressure during compaction operations, and also has an overload pressure relief function. The directional control component is used to control the extension and retraction of the power output component, so as to realize the lifting and lowering of the compaction actuator; The locking element is used to lock the position of the power output element when not in compaction operation, preventing the compaction actuator from moving accidentally.

[0014] As a further improvement of the present invention, the power source is a hydraulic pump, the pressure regulating component is a proportional relief valve, the direction control component is a directional valve, and the locking component is a balance valve; during compaction, the directional valve is in the first working position, the hydraulic pump supplies oil to the power output component, and the proportional relief valve maintains a constant working pressure; after the compaction is completed, the directional valve switches to the second working position, drives the power output component to retract to lift the compaction actuator, and then the directional valve returns to the neutral position, and the balance valve locks the oil circuit.

[0015] As a further improvement of the present invention, the size of the compaction actuator is smaller than the corresponding size of the roller steel wheel to adapt to the limited working space.

[0016] Secondly, a compaction operation method using the aforementioned roadside compaction mechanism includes the following steps: During compaction, the directional control component is switched to the working position, so that the power source supplies oil to the power output component, and the pressure is maintained by the pressure regulating component. After the compaction operation is completed, the direction control component is switched to the reset position, and the power output component is driven to retract to lift the compaction actuator. Subsequently, the direction control element is switched to the neutral position, and the oil circuit is locked by the locking element.

[0017] Compared with the prior art, the present invention has the following significant advantages: 1. The roadside compaction mechanism described in this invention is directly integrated into existing road rollers. It can perform mechanized continuous compaction of narrow areas at the edges without removing corrugated guardrails, completely changing the outdated operation method that relies on manual labor or disassembling and assembling guardrails, resulting in a qualitative leap in construction efficiency.

[0018] 2. This invention provides controllable and stable downward pressure to the compaction actuator through a hydraulic loading unit, ensuring that the compaction degree of the edge area is uniform and consistent with that of the main steel wheel rolling area, thus technically guaranteeing the overall road surface compaction quality.

[0019] 3. The pressure regulating components (such as proportional relief valves) in the hydraulic loading unit have overload protection functions, which can effectively buffer road impacts and protect the mechanical structure from damage; the locking components (such as balance valves) can lock the oil circuit during transportation and relocation to prevent the compaction actuator from falling accidentally and improve operational safety.

[0020] 4. The swing assembly adopts a structural design of "swing connecting arm + swing support bearing". The swing support bearing uses mature components such as self-aligning roller bearings and deep groove ball bearings to ensure smooth swinging and reduce the impact of vibration on compaction quality. In addition, the mounting shaft of the power output component of the swing connecting arm is parallel to the axis of the swing support bearing, resulting in uniform force distribution and further extending the service life of the equipment.

[0021] 5. The compaction actuator adopts a combination connection method of "conical surface positioning + bolt locking", which ensures precise positioning and stable connection; the swing connecting arm has a disassembly hole in the middle, which can quickly separate the conical surface fit by pushing with bolts, realizing convenient disassembly and replacement of the compaction actuator, reducing maintenance costs and time.

[0022] 6. The roadside compaction mechanism of the present invention has a compact structure and reasonable layout. The swing connecting arm can adapt to certain road surface unevenness. By adjusting the diameter of the compaction actuator and the pressure of the hydraulic system, it can be adapted to different models of vibratory rollers to meet the compaction requirements of different road grades and different edge widths. Its applicable scope covers the maintenance and repair operations of low, medium and high grade highways.

[0023] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below. Attached Figure Description

[0024] To more clearly illustrate the solutions in this invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a front view of the installation of the compaction mechanism and the road roller of the present invention.

[0026] Figure 2 This is a front view of the compaction mechanism and the road roller of the present invention.

[0027] Figure 3 This is a schematic diagram showing the state during the edge compaction operation of the present invention.

[0028] Figure 4 This is a front view of the mechanical structure of the edge compaction mechanism of the present invention.

[0029] Figure 5 This is a front view of the mechanical structure of the edge compaction mechanism of the present invention.

[0030] Figure 6 This is a side view of the mechanical structure of the edge compaction mechanism of the present invention.

[0031] Figure 7 This is a front view of the swing connecting arm in the edge compaction mechanism of the present invention.

[0032] Figure 8 This is a schematic diagram of the axial cross-section of the swing connecting arm in the edge compaction mechanism of the present invention.

[0033] Figure 9 This is a schematic diagram of the compaction actuator in the edge compaction mechanism of the present invention.

[0034] Figure 10 This is a schematic diagram of the hydraulic control principle in the edge compaction mechanism of the present invention.

[0035] Explanation of reference numerals in the attached figures: 1. Connecting support; 2. Power output component; 3. Fixed bracket; 4. Swing connecting arm; 401. Mounting hole; 402. Removal hole; 403. Power output component mounting shaft; 404. Tapered sleeve; 405. Swing bearing mounting seat; 5. Swing support bearing; 6. Compaction actuator; 7. Hydraulic pump; 8. Balance valve; 9. Directional valve; 10. Proportional relief valve; 11. Road roller; 12. Guardrail. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example 1 like Figure 1 , Figure 2 and Figure 3 As shown, the roadside compaction mechanism provided in this embodiment is integrally installed on the load-bearing structure (such as a suspension plate) on the side of the steel wheel of the vibratory roller, and is used to compact the edge road surface obstructed by the guardrail 12. The load-bearing structure is either the original structure of the roller 11 or a mounting base plate added for installing this mechanism.

[0038] The roadside compaction mechanism includes a mechanical compaction mechanism and a hydraulic loading unit for powering the mechanical compaction mechanism, such as... Figure 4 and Figure 5 As shown, the mechanical compaction mechanism includes a fixed support 3, a swing assembly, and a compaction actuator 6. The fixed support 3 is used for fixed connection with the load-bearing structure of the road roller 11. The swing assembly includes a swing connecting arm 4 and a swing support bearing 5. One end of the swing connecting arm 4 is swingably connected to the fixed support 3 through the swing support bearing 5, and the other end of the swing connecting arm 4 is detachably connected to the compaction actuator 6. This design allows the compaction actuator to swing in a fan shape around a fixed fulcrum to adapt to road surface undulations. Figure 6 As shown, the hydraulic loading unit includes a connecting support 1 and a power output component 2. The connecting support 1 is used to be fixedly connected to the load-bearing structure of the road roller 11. The two ends of the power output component 2 are respectively hinged to the connecting support 1 and the swing connecting arm 4. The hydraulic loading unit is used to drive the swing connecting arm 4 to swing around the swing support bearing 5, thereby driving the compaction actuator 6 to rise and fall, and providing it with a controllable and basically constant downward pressure during compaction operations.

[0039] The roadside compaction mechanism described in this invention is directly integrated into the existing road roller 11. Without removing the corrugated guardrail 12, it can perform mechanized continuous compaction of narrow areas at the edges, completely changing the outdated operation method that relies on manual labor or disassembling and assembling the guardrail 12, resulting in a qualitative leap in construction efficiency.

[0040] Example 2 Based on Example 1, this example further optimizes the roadside compaction mechanism provided in Example 1, and further discloses a structural scheme in which the compaction actuator 6 achieves rapid positioning and connection with the swing connecting arm 4 through a conical surface fit.

[0041] Specifically, refer to Figure 7 The swing connecting arm 4 is provided with a mounting hole 401, which is a through hole. (Refer to...) Figure 9 The end of the compaction actuator 6 is provided with a mounting and positioning cone surface 601; refer to Figure 8 The compaction mechanism also includes a conical sleeve 404, which is disposed within the mounting hole 401, and its inner wall has a conical hole that mates with the mounting and positioning conical surface 601. Preferably, the taper range of the mounting and positioning conical surface 601 and the conical sleeve 404 is 1:10 to 1:20. This taper range ensures sufficient positioning accuracy and load-bearing capacity while also facilitating disassembly.

[0042] As an optimization of the aforementioned conical surface mating scheme, the end of the compaction actuator 6 is also provided with a bolt connection hole. The compaction actuator 6 is bolted and fixed to the swing connecting arm 4 by a locking element (such as a bolt) passing through the bolt connection hole. The conical surface positioning combined with bolt locking forms a double guarantee, making the connection more stable and reliable.

[0043] It is worth mentioning that, referring to Figure 3 The diameter of the compaction actuator 6 is smaller than the diameter of the steel wheel of the road roller 11, making its structure more compact and enabling it to easily extend into narrow spaces such as under the installed corrugated guardrail 12 and inside the curb for operation.

[0044] Example 3 Based on Example 1 or Example 2, for ease of disassembly, refer to Figure 7 The swing connecting arm 4 is provided with a disassembly hole 402, the axis of which intersects the axis of the mounting hole 401, for applying a pushing force to the end of the compaction actuator 6 during disassembly. When it is necessary to disassemble the compaction actuator 6, the compaction actuator 6 is pushed out of its engagement with the tapered sleeve 404 by screwing a bolt into the disassembly hole 402, thus achieving quick disassembly.

[0045] As a further preferred embodiment, the disassembly hole 402 is located in the middle of the swing connecting arm 4, corresponding to the installation position of the compaction actuator 6, to ensure the coaxiality of the bolt pushing force during disassembly and to avoid damage to the conical structure during the pushing process.

[0046] Example 4 Based on the above embodiments, this embodiment further optimizes the aforementioned roadside compaction mechanism, referring to... Figure 8 Furthermore, a power output component mounting shaft 403 is provided on the swing connecting arm 4, and the lower end of the power output component 2 is hinged and fixed to the swing connecting arm 4 through the power output component mounting shaft 403. As a preferred embodiment, the axis of the power output component mounting shaft 403 is parallel to the axis of the swing support bearing 5, ensuring that the force is uniform when the power output component 2 drives the swing connecting arm 4 to swing, thereby improving the stability and service life of the mechanism.

[0047] The present invention further includes a swing bearing mounting base 405 on the swing connecting arm 4, and the swing support bearing 5 is installed in the swing bearing mounting base 405 to realize the swing connection between the swing connecting arm 4 and the fixed bracket 3. As a preferred embodiment, the swing bearing mounting base 405 has a stepped hole structure, which is used to axially position the swing support bearing 5 to prevent it from moving during operation and to ensure swing accuracy.

[0048] Example 5 Based on the above embodiments, this embodiment further optimizes the aforementioned roadside compaction mechanism, referring to... Figure 10The hydraulic loading unit further discloses that it also includes a power source, a pressure regulator, a directional control component, and a locking component. The power source provides the system with a pressure medium. The pressure regulator adjusts and stabilizes the downward pressure during compaction (adjustment range 5-16 MPa) and has an overload relief function. The directional control component controls the extension and retraction of the power output component to achieve the lifting and lowering of the compaction actuator. The locking component locks the position of the power output component when not in compaction operation to prevent the compaction actuator from moving accidentally. This hydraulic system can: 1) accurately set and maintain a constant working pressure through a proportional relief valve, thereby providing stable pressure; 2) control the lifting and lowering of the compaction actuator through a directional valve; 3) lock the cylinder position when not in operation through a balance valve to prevent the actuator from falling due to gravity or vibration; 4) when encountering an insurmountable obstacle, the proportional relief valve can open to relieve pressure, providing overload protection.

[0049] A method for implementing a compaction operation using the aforementioned roadside compaction mechanism includes the following steps: Compaction steps: The direction control component of the hydraulic loading unit is switched to the working position, the power source supplies oil to the power output component, drives the compaction actuator to press down to the working surface, and maintains the set downward pressure through the pressure regulating component. The road roller continuously compacts the edge with constant pressure while moving.

[0050] Lifting Steps: After compaction is completed or when relocation is required, the directional control unit switches to the reset position, retracting the drive power output unit and lifting the compaction actuator to the transport position. Locking procedure: Switch the directional control to the neutral position and lock the relevant oil circuit of the power output component through the locking component (such as the balance valve) to keep the compaction actuator firmly in the lifting position.

[0051] Example 6 Based on Example 5, this example further optimizes the above-mentioned roadside compaction mechanism, preferably using a hydraulic pump 7 as the power source, a balance valve 8 as the locking component, a reversing valve 9 as the directional control component, and a proportional relief valve 10 as the pressure regulating component.

[0052] like Figure 10As shown, the hydraulic pump 7, either integrated with the roller 11 or installed independently, provides the oil source. The directional valve 9 is a three-position four-way solenoid directional valve used to control the extension and retraction of the power output component 2 (such as the loading cylinder). The first working position is when the power output component 2 extends (compacting roller 6 presses down), the second working position is when the power output component 2 retracts (compacting roller 6 lifts up), and the neutral position is the locked state. A balance valve 8 is connected in series in the rodless chamber oil circuit of the power output component 2. The balance valve 8 is used to lock the rodless chamber oil circuit of the cylinder when the directional valve 9 is in the neutral position, preventing the compaction actuator 6 from falling due to its own weight. A proportional relief valve 10 is connected in parallel to the main outlet oil circuit of the hydraulic pump 7. Its pilot pressure is set by the controller, acting as a system safety valve to limit the maximum pressure of the entire hydraulic system. When the compaction actuator 6 (such as the compaction roller) encounters an incompressible hard object or when the system malfunctions, the system pressure rises, and the proportional relief valve 10 opens to relieve pressure and protect the equipment. Specifically, during compaction, the directional valve 9 is in the first working position, the hydraulic pump 7 continuously supplies oil to the rodless chamber of the power output component 2, and the proportional relief valve 10 maintains a constant working pressure. After the compaction is completed, the directional valve 9 switches to the second working position, drives the power output component 2 to retract to lift the compaction actuator 6, and then the directional valve 9 returns to the neutral position, and the oil circuit is locked by the balance valve 8.

[0053] Working principle: The roadside compaction mechanism of the present invention is fixed to the suspension plate on the side of the steel wheel of the road roller 11 by the fixed bracket 3 and the upper support of the hydraulic cylinder 1, so as to achieve integrated installation with the road roller 11.

[0054] During compaction, the piston rod of the power output component 2 is extended by controlling the reversing valve 9, driving the swing connecting arm 4 to swing downwards around the swing support bearing 5. This causes the compaction actuator 6, installed at the end of the swing connecting arm 4, to press against the edge area of ​​the road surface. The hydraulic pump 7 continuously supplies oil, and the proportional relief valve 10 regulates and stabilizes the pressure in the rodless chamber of the power output component 2 at a set value, thereby providing a constant and controllable downward pressure to the compaction actuator 6, ensuring that it forms a uniform compaction effect on the ground with the main steel wheel of the roller 11. As the roller 11 moves forward, the compaction actuator 6 rolls accordingly, completing the continuous compaction of the edge area below the corrugated guardrail 12.

[0055] When a local bump in the road surface causes a sudden increase in load, the proportional relief valve 10 opens to relieve pressure, limiting the pressure in the rodless chamber of the power output component 2 within a safe range to protect the entire mechanical compaction mechanism.

[0056] After the compaction operation is completed, the control reversing valve 9 reverses, causing the power output component 2 to retract and drive the swing connecting arm 4 to swing upward, lifting the compaction actuator 6 off the ground. Subsequently, the reversing valve 9 returns to the neutral position, and the balance valve 8 locks the oil circuit of the rodless chamber of the power output component 2, keeping the compaction actuator 6 stably in the suspended position, facilitating the safe transfer of the equipment.

[0057] When it is necessary to disassemble the compaction actuator 6 for transportation or replacement, the operation is as follows: First, remove the end connecting bolts that fix the compaction actuator 6 to the swing connecting arm 4; then, screw the ejector bolt into the disassembly hole 402 provided on the swing connecting arm 4. By using the axial thrust of the bolt, the installation positioning cone surface 601 of the compaction actuator 6 can be smoothly separated from the mating cone surface of the cone sleeve 404, thereby realizing the quick disassembly of the compaction actuator 6.

[0058] Example 7 like Figure 1 , Figure 2 and Figure 3 As shown, the roadside compaction mechanism of the present invention is integrally mounted on the suspension plate on the side of the steel wheel of the vibratory roller 11. This roadside compaction mechanism includes a mechanical compaction mechanism and a hydraulic loading unit, the hydraulic loading unit being used to provide power to the mechanical compaction mechanism; see reference... Figure 4 , Figure 5 and Figure 6 The mechanical compaction mechanism mainly includes a fixed bracket 3, a swing connecting arm 4, and a compaction actuator 6. The fixed bracket 3 is firmly fixed to the suspension plate by bolts. The right end of the swing connecting arm 4 (with...) Figure 3 (From a certain perspective) The swing connecting arm 4 is connected to the fixed bracket 3 via a pair of swing support bearings 5, allowing the swing connecting arm 4 to swing freely within a certain angle relative to the fixed bracket 3. The compaction actuator 6 is installed at the left end of the swing connecting arm 4.

[0059] The specific structure of the swing connecting arm 4 is as follows: Its left end has a mounting hole 401, which is a threaded hole. An independent tapered sleeve 404, with external threads machined on its outer wall, can be screwed into and fixed within the mounting hole 401. The inner hole of the tapered sleeve 404 is a tapered hole. The left end journal of the compaction actuator 6 has a matching mounting and positioning tapered surface 601. During installation, the tapered surface of the compaction actuator 6 is inserted into the tapered hole of the tapered sleeve 404 to achieve automatic centering and high-precision positioning. For further tightening, the left end face of the compaction actuator 6 also has a bolt connection hole, which can be used to securely connect it to the swing connecting arm 4, forming a stable connection with tapered surface positioning and bolt anti-loosening. A disassembly hole 402 is provided in the middle of the swing connecting arm 4. When it is necessary to replace or disassemble the compaction actuator 6, simply remove the end connecting bolt and then screw a push bolt into the disassembly hole 402 to smoothly push the compaction actuator 6 out of the tapered sleeve; the disassembly process is simple and quick.

[0060] The swing connecting arm 4 is also equipped with a power output component mounting shaft 403 and a swing bearing mounting seat 405. The lower end of the power output component 2 is hinged to the power output component mounting shaft 403 via a pin. The swing support bearing 5 is installed in the swing bearing mounting seat 405. Preferably, the swing bearing mounting seat 405 is designed with a stepped hole to axially limit the bearing.

[0061] The hydraulic loading unit includes an upper cylinder support 1 and a power output component 2. The upper cylinder support 1 is also fixed to the suspension plate of the road roller 11. The upper end of the power output component 2 is hinged to the upper cylinder support 1 via a pin, and the lower end is hinged to the power output component mounting shaft 403 on the swing connecting arm 4. In this way, the power output component 2, the upper cylinder support 1, the swing connecting arm 4, and the fixed bracket 3 together constitute a swing actuator.

[0062] The hydraulic loading unit also includes a hydraulic pump 7, a proportional relief valve 10, a directional valve 9, a balance valve 8, and a power output component 2. The hydraulic pump 7 provides a pressurized oil source. The proportional relief valve 10 is connected to the rodless chamber oil circuit of the power output component 2; its set pressure determines the output force of the power output component 2 (i.e., the downward pressure of the compaction actuator 6) during compaction operations, and enables constant pressure control. When a road surface protrusion causes a sudden increase in load, the proportional relief valve 10 can open to relieve pressure and protect the mechanism. The directional valve 9 controls the direction of the oil circuit, thereby controlling the extension (downward pressure) and retraction (lifting) of the power output component 2. The balance valve 8 is installed on the rodless chamber oil circuit of the power output component 2. When the directional valve 9 is in the neutral position, it can lock the oil in the rodless chamber of the cylinder, preventing the compaction actuator 6 from sliding down due to its own weight or vibration.

[0063] The working process of the highway edge compaction mechanism described in this invention is as follows: Compaction Operation: The operator controls the directional valve 9 to the working position (i.e., the first working position). The pressurized oil output from the hydraulic pump 7 enters the rodless chamber of the power output component 2 through the directional valve 9 and the balance valve 8. At this time, the check valve opens, pushing the piston rod to extend and driving the swing connecting arm 4 to swing downward, so that the compaction actuator 6 compacts the surface. The proportional relief valve 10 ensures that the pressure in the rodless chamber is stable at the set value, thereby providing a constant compaction force. When the road roller 11 moves, the compaction mechanism moves accordingly, completing the continuous compaction of the road surface at the bottom of the guardrail 12.

[0064] Lifting and Transfer: After compaction is completed, control the directional valve 9 to the reset position (i.e., the second working position). Pressurized oil enters the rod chamber of the power take-off unit 2, while the oil in the rodless chamber flows back to the oil tank through the sequence valve in the balance valve 8 (opened under control oil pressure) and the directional valve 9. The piston rod retracts, driving the swing connecting arm 4 to swing upward, lifting the compaction actuator 6 to a safe height off the ground. Subsequently, the directional valve 9 is returned to the neutral position. At this time, the balance valve 8 closes without control oil pressure, locking the oil circuit of the rodless chamber of the power take-off unit 2. The compaction actuator 6 is reliably suspended and locked, and the road roller 11 can be safely transferred or transported over short distances.

[0065] Roller disassembly and assembly: When long-distance transportation or roller replacement is required, the compaction actuator 6 can be quickly removed using the aforementioned disassembly hole 402, reducing the transportation width and improving convenience.

[0066] Example 8 This embodiment relates to a compaction operation method using the aforementioned roadside compaction mechanism, comprising the following steps: S1. Installation and commissioning: Fix the fixed bracket 3 and the upper support 1 of the cylinder to the suspension plate on the side of the steel wheel of the road roller 11; screw the cone sleeve 404 into and fasten it into the mounting hole 401 of the swing connecting arm 4, so that the mounting positioning cone surface 601 at the end of the compaction actuator 6 fits against the inner wall cone surface of the cone sleeve 404, and use bolts to fix it to the swing connecting arm 4.

[0067] S2. Compaction Operation: Start the road roller 11 and hydraulic system, control the reversing valve 9 to switch to the first working position, and the hydraulic pump 7 supplies oil to the rodless chamber of the power output component 2; the power output component 2 extends and drives the swing connecting arm 4 to swing downward around the swing support bearing 5, so that the compaction actuator 6 presses against the edge area of ​​the road surface; the proportional relief valve 10 maintains the system working pressure constant, ensuring that the compaction actuator 6 applies continuous and stable downward pressure to the road surface; the road roller 11 moves slowly, and the compaction actuator 6 rolls accordingly, completing the continuous compaction of an area of ​​about 30 cm in width below the guardrail 12; if a local bulge occurs on the road surface during the operation, causing overload, the proportional relief valve 10 automatically opens to relieve pressure, so as to protect the mechanical structure from damage.

[0068] S3. Operation completed: After the compaction operation is completed, switch the reversing valve 9 to the second working position, retract the power output component 2, and drive the compaction actuator 6 to be lifted and detached from the ground; reset the reversing valve 9 to the neutral position, and lock the oil circuit with the balance valve 8 to keep the compaction actuator 6 suspended; the road roller 11 can be moved or parked, and the compaction actuator 6 will not fall due to its own weight during the process.

[0069] S4. Disassembly and maintenance: When it is necessary to disassemble the compaction actuator 6 for transportation or maintenance, first remove the end fixing bolts; screw the ejector bolt into the disassembly hole 402 on the swing connecting arm 4, and use the axial thrust of the bolt to separate the conical surface of the compaction actuator 6 from the conical sleeve 404; take out the compaction actuator 6 to complete the disassembly.

[0070] In the above embodiments of the present invention, the power output component is a hydraulic cylinder or a pneumatic cylinder, and the compaction actuator is a roller structure.

[0071] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A roadside compaction mechanism, installed on the side of the steel wheel of a road roller (11), characterized in that, It includes a mechanical compaction mechanism and a hydraulic loading unit that provides power to the mechanical compaction mechanism; The mechanical compaction mechanism includes a fixed support (3), a swing assembly, and a compaction actuator (6). The fixed support (3) is used to be fixedly connected to the load-bearing structure of the road roller (11). The swing assembly includes a swing connecting arm (4) and a swing support bearing (5). One end of the swing connecting arm (4) is swingably connected to the fixed support (3) through the swing support bearing (5), and the other end of the swing connecting arm (4) is detachably connected to the compaction actuator (6). The hydraulic loading unit includes a connecting support (1) and a power output component (2). The connecting support (1) is used to be fixedly connected to the bearing structure of the road roller (11). The two ends of the power output component (2) are respectively hinged to the connecting support (1) and the swing connecting arm (4). The hydraulic loading unit is used to drive the swing connecting arm (4) to swing around the swing support bearing (5) to drive the compaction actuator (6) to rise and fall and provide controllable downward pressure.

2. The roadside compaction mechanism according to claim 1, characterized in that, The compaction actuator (6) and the swing connecting arm (4) are positioned by a conical surface fit and are fixedly connected by a locking element.

3. The highway edge compaction mechanism according to claim 2, characterized in that, The swing connecting arm (4) is provided with a mounting hole (401), the end of the compaction actuator (6) is provided with a mounting positioning cone surface (601), a cone sleeve (404) is provided in the mounting hole (401), and the inner wall of the cone sleeve (404) is provided with a cone hole that is adapted to the mounting positioning cone surface (601).

4. The highway edge compaction mechanism according to claim 2, characterized in that, The locking component is a bolt, and the end of the compaction actuator (6) is provided with a bolt connection hole. The compaction actuator (6) is bolted and fixed to the swing connecting arm (4) by bolt.

5. The roadside compaction mechanism according to claim 3, characterized in that, The swing connecting arm (4) is provided with a disassembly hole (402), the axial direction of which intersects with the axial direction of the mounting hole (401), and is used to apply a push-out force to the compaction actuator (6) to achieve disassembly.

6. The highway edge compaction mechanism according to claim 1, characterized in that, The swing connecting arm (4) is provided with a power output component mounting shaft (403), and the lower end of the power output component (2) is hinged and fixed to the swing connecting arm (4) through the power output component mounting shaft (403); The swing connecting arm (4) is also provided with a swing bearing mounting seat (405), and the swing support bearing (5) is installed in the swing bearing mounting seat (405) to realize the swing connection between the swing connecting arm (4) and the fixed bracket (3).

7. The roadside compaction mechanism according to claim 1, characterized in that, The hydraulic loading unit also includes a power source, a pressure regulating component, a direction control component, and a locking component; The power source is used to provide a pressure medium to the system; The pressure regulating component is used to adjust and stabilize the downward pressure during compaction operations, and has an overload pressure relief function. The directional control component is used to control the extension and retraction of the power output component, so as to realize the lifting and lowering of the compaction actuator; The locking element is used to lock the position of the power output element when not in compaction operation, preventing the compaction actuator from moving accidentally.

8. The roadside compaction mechanism according to claim 7, characterized in that, The power source is a hydraulic pump (7), the pressure regulating component is a proportional relief valve (10), the direction control component is a reversing valve (9), and the locking component is a balance valve (8). During compaction, the reversing valve (9) is in the first working position, the hydraulic pump (7) supplies oil to the rodless chamber of the power output component (2), and the proportional relief valve (10) maintains a constant working pressure. After the compaction is completed, the reversing valve (9) switches to the second working position, drives the power output component (2) to retract to lift the compaction actuator (6), and then the reversing valve (9) returns to the neutral position, and the balance valve (8) locks the oil circuit.

9. The roadside compaction mechanism according to any one of claims 1 to 8, characterized in that, The size of the compaction actuator (6) is smaller than the corresponding size of the steel wheel of the roller (11) to adapt to the limited working space. The diameter of the compaction actuator (6) is smaller than the diameter of the steel wheel of the roller (11), so that it can extend into the space below the installed corrugated guardrail to carry out compaction work.

10. A method for compaction operations using a roadside compaction mechanism as described in any one of claims 1 to 9, characterized in that, Includes the following steps: During compaction, the directional control component is switched to the working position, so that the power source supplies oil to the power output component (2) and maintains the set downward pressure through the pressure regulating component; After the compaction operation is completed, the direction control component is switched to the reset position, and the power output component (2) is driven to retract to lift the compaction actuator (6). Subsequently, the direction control component is switched to the neutral position, and the oil circuit is locked by the locking component to maintain the lifting state of the compaction actuator (6).

Images