Efficient shoveling equipment for asphalt pavement

Abstract

The invention relates to the technical field of asphalt shoveling, in particular to an efficient asphalt pavement shoveling device which comprises a device body, a driving part arranged at the front end of the device body, a second motor arranged behind the device body and a shovel blade arranged below the driving part, the driving part is provided with a first eccentric block and a second eccentric block, the first eccentric block is fixedly arranged on a vibration shaft, and the second eccentric block is fixedly arranged on the vibration shaft. The second eccentric block is tightly attached to the first eccentric block and rotationally arranged on the vibrating shaft, the second eccentric block is connected with the fixed rotating wheel through the first connecting rod, and the fixed rotating wheel is rotated to enable phase angles of the second eccentric block and the first eccentric block to change so as to generate different exciting force which is transmitted to the scraper knife to be used for shoveling asphalt pavements with different thicknesses. By optimizing the eccentric structure of the driving part, flexible adjustment of the exciting force is achieved, the shoveling requirements of asphalt pavements with different thicknesses are met, the first eccentric block and the second eccentric block are combined, the first connecting rod is driven by the fixed rotating wheel to adjust the phase angle of the first eccentric block and the second eccentric block, the exciting force is changed, and the pavement repairing quality is improved.

Description

Technical Field

[0001] This invention relates to the field of asphalt shovel technology, specifically to an efficient asphalt pavement shovel device. Background Technology

[0002] In asphalt pavement maintenance and renovation, scraping equipment is a core construction tool, and its efficiency and adaptability directly affect the project progress and pavement repair quality. Currently, most asphalt pavement scraping equipment on the market adopts a fixed excitation force structure, generating vibration through a single eccentric block or a fixed-phase eccentric component, which then drives the scraper to complete the scraping operation. This type of equipment has significant limitations in practical applications, making it difficult to flexibly adapt to asphalt pavements of varying thicknesses. When dealing with thicker asphalt layers, the fixed excitation force is often insufficient, resulting in inadequate scraping force and requiring repeated operations to achieve the desired effect. This not only reduces construction efficiency but also increases equipment energy consumption and wear on core components due to continuous low-load vibration, shortening the equipment's service life.

[0003] When processing thin-layer asphalt pavements, a fixed high vibration force can easily exceed the bearing capacity of the pavement base layer, causing damage to the base structure, affecting the quality of subsequent paving, and increasing maintenance rework costs. Meanwhile, some existing adjustable vibration force scraping equipment has a complex adjustment structure, often requiring disassembly of the drive unit housing, manual adjustment of the eccentric block position, or replacement of the eccentric component. This cumbersome operation process consumes significant downtime, severely impacting construction continuity. Furthermore, the transmission structure design of this type of equipment is not optimal, prone to belt slippage and power interruption during power transmission, making it unsuitable for long-term continuous scraping operations and further restricting construction efficiency.

[0004] Furthermore, some adjustable devices lack a reliable self-locking structure. After adjustment, under high-frequency vibration and impact, the phase angle of the eccentric block is prone to shift, leading to unstable excitation force and affecting cutting accuracy and operational consistency. Simultaneously, the overall structural coordination of the equipment is insufficient, with vibration and impact directly transmitted to each component, exacerbating rigid collisions between parts. This not only generates significant operating noise but also accelerates component aging and damage, increasing maintenance frequency and operating costs. To address these shortcomings of existing technologies, there is an urgent need for an asphalt pavement cutting device that can flexibly adjust the excitation force, is easy to operate, runs stably, and is adaptable to diverse operating scenarios to meet actual construction needs.

[0005] Therefore, we propose a high-efficiency asphalt pavement scraping device. Summary of the Invention

[0006] One of the technical problems this application aims to solve is the urgent need for an asphalt pavement scraping device that can flexibly adjust the excitation force, is easy to operate, runs stably, and is adaptable to diverse operating scenarios, in order to meet actual construction needs.

[0007] To address the aforementioned technical problems, this application provides an efficient asphalt pavement scraping device, comprising a device body, a drive unit located at the front end of the device body, a second motor located at the rear of the device body, and a scraper located below the drive unit. The drive unit is equipped with an eccentric block one and an eccentric block two. The eccentric block one is fixedly mounted on a vibration shaft, and the eccentric block two is tightly attached to the eccentric block one and rotatably mounted on the vibration shaft. The eccentric block two is connected to a fixed rotating wheel via a connecting rod one. Rotating the fixed rotating wheel causes a change in the phase angle of the eccentric block two and the eccentric block one to generate different excitation forces, which are transmitted to the scraper to scrape asphalt pavements of different thicknesses.

[0008] In some embodiments, the drive unit includes a top cover, a support plate disposed below the top cover, a motor disposed on the support plate, an output shaft disposed at the output end of the motor, a support column disposed on the support plate, and a spring for reducing the impact on the support plate.

[0009] In some embodiments, a drive wheel is rotatably mounted on the output shaft, and a driven wheel is supported next to the drive wheel. The drive wheel and the driven wheel are rotatably connected by a belt.

[0010] In some embodiments, the vibration shaft is fixedly installed inside the driven wheel, a blind hole is provided in the central area of ​​the eccentric block one, and a through hole is provided in the central area of ​​the eccentric block two. The through hole, the blind hole, and the connecting rod one are matched in size, and one end of the connecting rod one passes through the through hole and enters the blind hole.

[0011] In some embodiments, a connecting hole is provided on the fixed rotating wheel at the corresponding through hole position. The other end of the connecting rod passes through the connecting hole and is fixedly connected to the fixed rotating wheel. A keyway is provided on the fixed rotating wheel near the inner side of the vibration shaft. A protrusion matching the size of the keyway is provided on the vibration shaft. When the protrusion is not engaged in the keyway, the fixed rotating wheel can rotate around the vibration shaft and can move axially along the vibration shaft.

[0012] In some embodiments, a limiting shell is provided in the middle of the fixed rotating wheel, and limiting wheels are provided at both ends of the limiting shell. The size of the limiting wheels matches the inner diameter of the limiting shell cross section, and the limiting wheels can enter the limiting shell.

[0013] In some embodiments, the limiting wheel abuts against the fixed rotating wheel.

[0014] In some embodiments, a plurality of side plates are evenly arranged on the inner side of the limiting wheel, and a connecting shaft is provided between adjacent side plates. A connecting rod and a connecting rod are rotatably connected to one end of the connecting shaft.

[0015] In some embodiments, connecting rod 2 and connecting rod 3 are rotatably connected by connecting shaft 2, and spring 2 is provided between adjacent connecting rod 2 and connecting rod 3.

[0016] In some embodiments, spring two is fixedly connected to the limiting wheel, and connecting rod two, connecting rod three, and spring two are all disposed inside the limiting shell, and the limiting wheel can move axially along the vibration shaft.

[0017] This invention has at least the following beneficial effects: 1. By optimizing the eccentric structure of the drive unit, the excitation force can be flexibly adjusted to meet the needs of asphalt pavement scraping of different thicknesses. Traditional equipment is mostly designed with a fixed excitation force, which is prone to problems such as inefficient scraping of thick layers or damage to thin layers of pavement. It also increases energy consumption and component wear. By combining eccentric blocks one and two, and adjusting the phase angle between the two by driving the connecting rod one through the fixed rotating wheel, the excitation force can be precisely changed. For thick layer operations, sufficient excitation force is provided to ensure efficiency, while for thin layer operations, the force can be adjusted to a suitable level to protect the base layer and improve the quality of pavement repair.

[0018] 2. The motor transmits power through the output shaft, drive pulley, belt, and driven pulley, driving the vibration shaft to rotate. This design is simple to maintain, has low power loss, and efficiently converts motor kinetic energy. The vibration shaft and driven pulley are fixedly connected, ensuring coaxial rotation, reducing vibration deviation and component wear, and extending equipment life. Compared to traditional structures prone to belt slippage and power interruption, this equipment's transmission components are tightly fitted, allowing for continuous operation over extended periods and improving overall efficiency.

[0019] 3. The equipment has an automatic self-locking function, which can maintain the stability of the phase angle of the eccentric block during operation, avoid the excitation force from shifting due to vibration and impact, and ensure the consistency and accuracy of scraping. After the motor starts, the centrifugal force generated by the rotation of the vibration shaft causes the connecting rods two and three to expand from the inside until they are collinear and fit against the inner surface of the limiting shell, pushing the limiting wheel to abut against the fixed rotating wheel, so that the keyway and the protrusion are engaged, completing the locking of the eccentric block position. No manual fixing is required. It automatically locks by relying on centrifugal force, which is simple to operate and highly reliable. It effectively prevents the phase angle from changing during operation and ensures that the excitation force meets the preset requirements.

[0020] 4. The eccentric block phase angle adjustment is convenient and requires no complex disassembly, significantly reducing operational difficulty and downtime. When adjusting the excitation force, simply turn off motor one. After the centrifugal force disappears, connecting rods two and three retract under the reset action of spring two, pulling the limit wheel away from the fixed rotating wheel, allowing it to move and rotate axially along the vibration shaft. Rotate the fixed rotating wheel to adjust the phase of eccentric block two, align the through hole and blind hole, then push the fixed rotating wheel back to re-engage the keyway and protrusion. Restart the motor to begin operation. Ordinary operators can complete the adjustment, reducing downtime and ensuring continuous operation.

[0021] 5. The equipment has a compact overall structure and well-coordinated components, balancing work efficiency and operational safety. The buffer structure composed of the limiting shell, limiting wheel, and spring 2 provides support for locking and unlocking the fixed rotating wheel, absorbs vibration and impact, reduces rigid collisions of components, and lowers noise and wear. The connecting rod 1 is precisely matched with the blind hole and through hole of the eccentric block to ensure smooth and unobstructed power transmission for phase adjustment. Motor 2 provides the equipment with the power to move and works in coordination with the vibration of the blade. No additional traction equipment is required, which improves mobility and operational flexibility and adapts to diverse scenario requirements. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention without the top cover; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 2 Enlarged view at point B in the middle; Figure 5 This is a top view of the overall structure of the present invention without the top cover; Figure 6 for Figure 5 CC section view; Figure 7 for Figure 6 Enlarged view at point D; Figure 8 A schematic diagram showing the connection between the limiting shell, the limiting wheel, and the fixed rotating wheel; Figure 9 This is a schematic diagram showing the connection between the limit wheel, the vibration shaft, and the fixed rotating wheel. Figure 10 This is another type of shovel device.

[0023] In the diagram, 100-device body; 200-drive unit; 201-top cover; 202-support plate; 203-motor one; 204-output shaft; 205-drive wheel; 206-belt; 207-driven wheel; 208-vibration shaft; 209-support column; 210-spring one; 211-limiting shell; 212-eccentric block one; 2121-blind hole; 213-eccentric block two; 2131-through hole; 21 4-Connecting rod one; 2141-Connecting hole; 215-Fixed rotating wheel; 216-Limiting wheel; 218-Keyway; 219-Protrusion; 220-Side plate; 221-Connecting shaft one; 222-Connecting rod two; 223-Connecting rod three; 225-Connecting shaft two; 226-Spring two; 300-Shovel blade; 400-Motor two; 500-Chisel shank; 600-Piston; 700-Cylinder body; 800-Nitrogen chamber. Detailed Implementation

[0024] 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, and 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.

[0025] Example 1, see Figures 1-9 The present invention provides a technical solution: an efficient asphalt pavement scraping device, comprising a device body 100, a drive unit 200 disposed at the front end of the device body 100, a second motor 400 disposed at the rear of the device body 100, and a scraper 300 disposed below the drive unit 200. The drive unit 200 is provided with an eccentric block 212 and an eccentric block 213. The eccentric block 212 is fixedly disposed on a vibration shaft 208, and the eccentric block 213 is closely attached to the eccentric block 212 and rotatably disposed on the vibration shaft 208. The eccentric block 213 is connected to a fixed rotating wheel 215 through a connecting rod 214. Rotating the fixed rotating wheel 215 causes the phase angle of the eccentric block 213 and the eccentric block 212 to change to generate different excitation forces, which are transmitted to the scraper 300 for scraping asphalt pavement of different thicknesses.

[0026] Specifically, this design works by using an adjustable phase angle design for the eccentric block assembly to achieve dynamic control of the excitation force, thereby adapting to the shoveling requirements of different working conditions. The device body 100 serves as the overall installation base, forming a collaborative working unit with the drive unit 200, the second motor 400, and the blade 300. The drive unit 200 provides the power source for the shoveling vibration, the second motor 400 is responsible for the movement of the device body 100, and the blade 300 directly contacts the asphalt pavement to complete the shoveling action. The first eccentric block 212 inside the drive unit 200 is fixed on the vibration shaft 208 and rotates synchronously with the vibration shaft 208. The second eccentric block 213 is close to the first eccentric block 212 and can rotate relative to the vibration shaft 208. It establishes a linkage relationship with the fixed rotating wheel 215 through the connecting rod 214. When the fixed rotating wheel 215 is rotated, the connecting rod 214 drives the eccentric block 213 to rotate around the vibration shaft 208, changing the phase angle between it and the fixed eccentric block 212. The centrifugal force generated by the rotation of the two eccentric blocks will be superimposed or canceled as the phase angle changes, forming different magnitudes of excitation force. This excitation force is transmitted to the blade 300, enabling the blade 300 to obtain vibration energy of different intensities, thus achieving targeted scraping of asphalt pavement of different thicknesses.

[0027] The purpose of this design is to solve the problems of fixed excitation force and poor adaptability of traditional asphalt scraping equipment, enabling a single device to cover diverse working conditions. Traditional equipment often uses a fixed eccentric structure, which can only generate a constant excitation force and cannot simultaneously meet the needs of efficient scraping of thick asphalt layers and precise scraping of thin asphalt layers, easily leading to inefficient operation or road surface damage. Based on this, by setting the eccentric block as a combination of fixed and rotatable, and with the linkage structure of connecting rod 214 and fixed rotating wheel 215, a flexible way to adjust the excitation force is provided, allowing the device body 100 to adapt to asphalt pavements of different thicknesses through simple operation. At the same time, the reasonable layout of the drive unit 200 and the scraper 300 ensures that the excitation force can be efficiently transmitted to the working end, balancing work efficiency and ease of operation, and reducing the time and cost losses caused by equipment replacement or modification.

[0028] In terms of adaptability, the excitation force can be precisely controlled by adjusting the phase angle between eccentric block 1 212 and eccentric block 213. When dealing with thick asphalt pavement, the excitation force can be adjusted to a larger value to ensure that the scraper 300 can quickly break through the structural strength of the asphalt layer and avoid repeated operations. When dealing with thin asphalt pavement, the excitation force can be reduced to prevent damage to the base pavement and improve the quality of operation. In terms of operating efficiency, there is no need to disassemble the equipment or replace the eccentric components. The excitation force can be adjusted simply by rotating the fixed rotating wheel 215. With the motor 2 400 driving the device body 100 to move, it is possible to quickly switch between working conditions and reduce downtime for adjustment.

[0029] In terms of practicality, the second eccentric block 213 is positioned close to the first eccentric block 212, which shortens the force transmission path, reduces excitation force loss, and ensures that the adjusted excitation force can be efficiently transmitted to the blade 300, improving energy utilization. The linkage structure between the first connecting rod 214, the fixed rotating wheel 215, and the second eccentric block 213 is simple and reliable, with low operation difficulty; ordinary operators can complete the adjustment without professional skills. Furthermore, this structure relies on the existing layout of the device body 100, requiring no significant modifications to the overall equipment structure. It boasts strong compatibility, reduces equipment research and development and manufacturing costs, extends the equipment's service life, adapts to more asphalt pavement maintenance and renovation scenarios, and enhances the overall value of the equipment.

[0030] Example 2, see Figures 1-9 The drive unit 200 includes a top cover 201, a support plate 202 disposed below the top cover 201, a motor 203 disposed on the support plate 202, an output shaft 204 disposed at the output end of the motor 203, a support column 209 disposed on the support plate 202, and a spring 210 for reducing the impact on the support plate 202.

[0031] A drive wheel 205 is rotatably mounted on the output shaft 204, and a driven wheel 207 is supported next to the drive wheel 205. The drive wheel 205 and the driven wheel 207 are rotatably connected by a belt 206.

[0032] Specifically, the top cover 201 and the support plate 202 constitute the basic mounting frame of the drive unit 200. The top cover 201 provides protection and limit for the upper structure, while the support plate 202 serves as the carrier for the motor 203, ensuring that the motor 203 is installed securely and preventing displacement due to vibration during operation. The motor 203, as a power source, drives the output shaft 204 to rotate synchronously after starting. The drive wheel 205 on the output shaft 204 rotates with the output shaft 204. Through the transmission action of the belt 206, the power is transmitted to the driven wheel 207 supported on the side, causing the driven wheel 207 to rotate synchronously with the drive wheel 205. This provides a continuous and stable driving force for the subsequent vibration shaft 208. Finally, the vibration structure converts the power into the excitation force required by the blade 300, ensuring the orderly progress of the shoveling operation.

[0033] The purpose of this design is to solve the problems of unstable power transmission, messy installation layout, and insufficient protection in the drive unit 200, and to construct a compact drive unit with efficient power transmission. Traditional drive units 200 often suffer from loose component installation, high power loss during transmission, and susceptibility to external interference, affecting the overall operational stability of the equipment. Based on this, the installation frame is constructed by the cooperation of the top cover 201 and the support plate 202, which allows for the orderly layout of components such as motor 203 and output shaft 204, avoiding interference between components. At the same time, the transmission combination of drive wheel 205, belt 206, and driven wheel 207 aims to achieve flexible power transmission, adapting to the installation position difference between motor 203 and driven wheel 207, ensuring that power can be smoothly transmitted to the subsequent vibrating structure, meeting the power requirements of the blade 300 for continuous vibrating scraping.

[0034] In terms of installation stability, the top cover 201 and the support plate 202 form a highly enclosed installation space, which can not only fix the position of components such as motor 203 and drive wheel 205, reducing the impact of high-frequency vibration on component connections, but also prevent external dust, gravel, and other impurities from entering the transmission mechanism, reducing the risk of component wear. The stable support of the support plate 202 for motor 203 can prevent the output shaft 204 and drive wheel 205 from malfunctioning due to vibration displacement of motor 203, ensuring the stability of power output.

[0035] In terms of power transmission efficiency, the transmission structure of the drive pulley 205, belt 206, and driven pulley 207 is simple, with minimal loss during power transmission. It can maximize the conversion of the kinetic energy of the motor 203 into the rotational energy of the driven pulley 207, providing sufficient power support for the subsequent generation of excitation force. The flexible transmission characteristics of the belt 206 can alleviate the impact load generated during operation, protect components such as the drive pulley 205, driven pulley 207, and output shaft 204, and extend the overall service life of the drive unit 200.

[0036] In terms of ease of maintenance, the modular layout makes the installation positions of each component clear. During subsequent maintenance, the top cover 201 can be quickly disassembled to inspect and replace components such as the motor 203 and belt 206 on the support plate 202 without disassembling the entire drive unit 200 structure. The side support of the drive pulley 205 and driven pulley 207 provides ample operating space for the installation and tension adjustment of the belt 206, reducing maintenance difficulty and time consumption, ensuring that the equipment can quickly return to working condition, and improving the continuity of construction.

[0037] Example 3, see Figures 1-9 The vibration shaft 208 is fixedly installed inside the driven wheel 207. A blind hole 2121 is provided in the central area of ​​the eccentric block 1 212, and a through hole 2131 is provided in the central area of ​​the eccentric block 213. The through hole 2131, the blind hole 2121, and the connecting rod 1 214 are matched in size. One end of the connecting rod 1 214 passes through the through hole 2131 and enters the blind hole 2121.

[0038] A connecting hole 2141 is provided on the fixed rotating wheel 215 at the position corresponding to the through hole 2131. The other end of the connecting rod 214 passes through the connecting hole 2141 and is fixedly connected to the fixed rotating wheel 215. A keyway 218 is provided on the inner side of the fixed rotating wheel 215 near the vibration shaft 208. A protrusion 219 matching the size of the keyway 218 is provided on the vibration shaft 208. When the protrusion 219 is not engaged in the keyway 218, the fixed rotating wheel 215 can rotate around the vibration shaft 208 and can move along the axial direction of the vibration shaft 208.

[0039] Specifically, this design works by achieving controllable adjustment of the eccentric block phase angle and reliable positioning during operation through precise matching between components, ensuring the stability of the excitation force control. The vibration shaft 208 is fixedly installed inside the driven wheel 207 and can rotate synchronously with the driven wheel 207, providing a rotational carrier and power transmission path for eccentric blocks 1 212 and eccentric block 213. The blind hole 2121 of eccentric block 1 212 and the through hole 2131 of eccentric block 213 are size-matched and both match the connecting rod 1 214, allowing one end of the connecting rod 1 214 to pass through the through hole 2131 and embed into the blind hole 2121, establishing a linkage relationship between eccentric block 213 and connecting rod 1 214, while limiting the radial displacement of eccentric block 213. The fixed rotating wheel 215 is fixed to the other end of the connecting rod 214 through the connecting hole 2141. The keyway 218 on its inner side matches the size of the protrusion 219 on the vibration shaft 208, forming a disengageable positioning structure. When the protrusion 219 is not engaged in the keyway 218, the fixed rotating wheel 215 can move along the axial direction of the vibration shaft 208 and rotate around the shaft, driving the connecting rod 214 to adjust the phase angle of the eccentric block 213. When the protrusion 219 is engaged in the keyway 218, the fixed rotating wheel 215 rotates synchronously with the vibration shaft 208, locking the phase angle of the eccentric block.

[0040] The purpose of this design is to solve the problems of insufficient phase angle adjustment accuracy and easy displacement during operation of the eccentric block, and to achieve precise control and stable maintenance of the excitation force. Traditional eccentric adjustment structures often have problems such as large gaps between components and unreliable positioning, which cause the phase angle to easily shift under vibration and impact after adjustment, affecting the stability of the excitation force. Based on this, the fixed connection between the vibration shaft 208 and the driven wheel 207 ensures that the power can be directly transmitted to the eccentric block assembly, reducing power loss. With the precise cooperation of the blind hole 2121, the through hole 2131 and the connecting rod 214, the movement trajectory of the second eccentric block 213 is limited, improving the accuracy of phase angle adjustment. At the same time, the clutch structure of the keyway 218 and the protrusion 219 realizes the switching between the fixed rotating wheel 215 in the adjustment state and the working state, which not only ensures the flexibility of phase angle adjustment, but also locks the structural position during operation, preventing the eccentric block assembly from shifting.

[0041] In terms of adjustment precision, the dimensions of blind hole 2121, through hole 2131, and connecting rod 214 are precisely matched, effectively reducing the fitting clearance between components. This ensures precise movement when connecting rod 214 drives eccentric block 213 to rotate, guaranteeing that the phase angle between eccentric block 212 and eccentric block 213 can be adjusted to a preset angle. This allows for precise control of the excitation force, adapting to the shoveling requirements of asphalt pavements of different thicknesses. The fixed connection between vibration shaft 208 and driven wheel 207 prevents relative rotation during power transmission, ensuring that the rotational speed of the eccentric block assembly matches the power output and improving the stability of the excitation force output.

[0042] In terms of operational stability, the mating structure of the keyway 218 and the protrusion 219 can reliably lock the position of the fixed rotating wheel 215 during operation, preventing it from moving axially along the vibration shaft 208 or rotating around the shaft under high-frequency vibration. This, in turn, locks the position of the eccentric block 213, avoiding phase angle shifts that could cause fluctuations in excitation force and ensuring the consistency of the cutting operation. The axially movable design of the fixed rotating wheel 215 makes the engagement and disengagement of the keyway 218 and the protrusion 219 convenient, allowing for switching between adjustment and operation states without disassembling complex components, thus reducing operational difficulty.

[0043] In terms of structural reliability, the cooperation between all components is achieved through mechanical structures, eliminating the need for additional locking devices. This simplifies the structure while enhancing vibration and impact resistance and reducing the failure rate. The connecting rod 214 is fixedly connected at both ends to the eccentric block 213 and the fixed rotating wheel 215, ensuring even force distribution and effectively withstanding vibration and impact loads, preventing component breakage or deformation and extending the structure's service life. The overall structure is compact, integrating power transmission and structural positioning via the vibration shaft 208 without requiring additional installation space. This design also fits the overall layout of the drive unit 200, improving the rationality of the equipment structure.

[0044] Example 4, see Figures 1-9 A limiting shell 211 is provided in the middle of the fixed rotating wheel 215, and a limiting wheel 216 is provided at both ends of the limiting shell 211. The size of the limiting wheel 216 matches the inner diameter of the limiting shell 211, and the limiting wheel 216 can enter the limiting shell 211.

[0045] The limiting wheel 216 abuts against the fixed rotating wheel 215. Several side plates 220 are evenly arranged on the inner side of the limiting wheel 216, and a connecting shaft 221 is arranged between adjacent side plates 220. The ends of the connecting shaft 221 are rotatably connected to the connecting rod 222 and the connecting rod 223.

[0046] Connecting rod 222 and connecting rod 323 are rotatably connected by connecting shaft 225, and spring 226 is provided between adjacent connecting rods 222 and 323.

[0047] Spring 226 is fixedly connected to limiting wheel 216. Connecting rod 222, connecting rod 3, and spring 226 are all located inside limiting shell 211. Limiting wheel 216 can move axially along vibration shaft 208.

[0048] Specifically, the core principle of this design is to rely on the linkage and elastic reset characteristics of the mechanical components to achieve automatic locking and unlocking of the fixed rotating wheel 215, ensuring that the phase angle of the eccentric block is stable during operation and flexible during adjustment. The limiting shell 211 is set in the middle of the fixed rotating wheel 215 to provide installation and movement space for the internal components. The limiting wheels 216 at both ends of the limiting shell 211 can smoothly enter the interior of the limiting shell 211 and move axially along the vibration shaft 208 because their size matches the inner diameter of the cross section of the limiting shell 211, and always maintain a contact state with the fixed rotating wheel 215. The inner side plate 220 of the limiting wheel 216 provides fixed support for the connecting shaft 1 221. The connecting rod 222 and the connecting rod 3 223 form a foldable linkage structure through the connecting shaft 1 221 and the connecting shaft 225. The spring 226 is connected between the adjacent connecting rod 222 and the connecting rod 3 223 and is fixed to the limiting wheel 216. It can be stretched and compressed with the opening and closing of the linkage structure, thereby driving the limiting wheel 216 to move axially along the vibration shaft 208, completing the locking or unlocking of the fixed rotating wheel 215.

[0049] The purpose of this design is to address the issues of insufficient locking reliability of the fixed rotating wheel 215 and the need for manual locking. It achieves automatic locking in operation and convenient unlocking in adjustment mode, ensuring stable vibration force output. Traditional fixed rotating wheel 215 positioning structures often rely on manual tightening or simple clips, whose locking effect is easily affected by vibration and impact, and whose operation is cumbersome and time-consuming. Therefore, through the cooperation of the limiting shell 211 and the limiting wheel 216, axial limiting support is provided for the fixed rotating wheel 215. Utilizing the linkage structure of connecting rod 222 and connecting rod 223, and the elastic force of spring 226, the kinetic energy generated by vibration is converted into the clamping force of the limiting wheel 216, achieving automatic locking. Simultaneously, utilizing the reset characteristic of spring 226, the connecting rod structure resets after vibration stops, releasing the fixed rotating wheel 215. This allows for switching to adjustment mode without manual intervention, balancing operational stability and ease of operation.

[0050] Regarding locking reliability, during operation, the centrifugal force generated by the rotation of the vibration shaft 208 causes the connecting rod 222 and the connecting rod 223 to expand from the inside out, pushing the limiting wheel 216 to move axially along the vibration shaft 208 and tightly abut against the fixed rotating wheel 215. Combined with the tensile force of the spring 226, a continuous and stable clamping force is formed, firmly locking the position of the fixed rotating wheel 215 and preventing it from shifting under high-frequency vibration, thereby ensuring the stability of the phase angle of the eccentric block and avoiding the impact of vibration force fluctuations on the shoveling effect.

[0051] In terms of ease of operation, no additional manual locking or unlocking components are required; state switching is achieved entirely through mechanical linkage and elastic reset. After operation stops, the centrifugal force disappears, spring 226 retracts and resets, pulling connecting rod 222 and connecting rod 323 to fold towards the vibration shaft 208, causing the limit wheel 216 to retract into the limit housing 211, releasing the clamping force on the fixed rotating wheel 215. At this point, the phase angle can be adjusted by directly rotating or moving the fixed rotating wheel 215. The operation process is simple, significantly shortening the working condition switching time and improving construction efficiency.

[0052] In terms of structural protection and durability, the limiting shell 211 completely encloses the connecting rod 222, connecting rod 223, and spring 226, effectively preventing the intrusion of external dust, gravel, and other impurities, avoiding component wear or jamming. It also buffers the impact of vibration on internal components, reducing rigid collisions. The precise dimensional matching between the limiting wheel 216 and the limiting shell 211 ensures smooth axial movement without jamming. Combined with the elastic buffering of spring 226, it disperses the force during operation, preventing excessive load on local components that could lead to breakage or deformation, thus extending the overall structural lifespan. The overall layout is compact, relying on the fixed rotating wheel 215 for installation in the middle position, without occupying additional space in the drive unit 200. It has strong compatibility with existing structures, improving the overall structural coordination of the equipment.

[0053] Working process: The starting motor 203 drives the output shaft 204 to rotate, which in turn drives the driving wheel 205 to rotate. The driving wheel 205 drives the driven wheel 207 to rotate via the belt 206, which in turn drives the vibration shaft 208 to rotate. The rotation of the vibration shaft 208 generates centrifugal force, causing the connecting rods 222 and 323 to change from an inward-retracted state to an outward-expanding state. When the connecting rods 222 and 323 are collinear with the connecting shaft 225, they are against the inner surface of the limiting shell 211. At this time, the connecting rods 222 and 323 push the limiting wheel 216 outward to abut against the fixed rotating wheel 215. The spring 226 is stretched until the limiting wheel 216 pushes... When the keyway 218 of the fixed rotating wheel 215 engages with the protrusion 219, the rotation stops. At this time, the connecting rod 214 of the fixed rotating wheel 215 passes through the blind hole 2121 and through hole 2131 of the eccentric blocks 212 and 213, causing the eccentric blocks 212 and 213 to move and rotate, thus achieving a self-locking state. The vibration shaft 208 then rotates, driving the eccentric blocks 212 and 213 to rotate and generating a vibration force that acts on the scraper 300 to scrape the asphalt. When the phase angle of the eccentric blocks 212 and 213 is 0 degrees, the generated vibration force is the largest, suitable for thicker asphalt layers; when the phase angle of the eccentric blocks 212 and 213 is 180 degrees, the generated vibration force is the smallest, suitable for thicker asphalt layers. For thinner asphalt layers; when it is necessary to adjust the phase angle of eccentric blocks 1 212 and 213, stop motor 1 203. At this time, the vibration shaft 208 stops rotating, causing the centrifugal force to disappear, and the connecting rods 222 and 3 223 change from an outward expansion state to an inward contraction state. When the connecting rods 222 and 3 223 move towards the vibration shaft 208 through the connecting shaft 225, the connecting rods 222 and 3 223 pull back the limiting wheel 216 and no longer abut against the fixed rotating wheel 215. The spring 226 becomes compressed. At this time, the moving limiting wheel 216 moves towards the fixed rotating wheel 215, so that when the keyway 218 of the fixed rotating wheel 215 leaves the protrusion 219, the connecting rod 1 214... The tail end leaves the blind hole 2121 and remains in the through hole 2131. Rotating the fixed rotating wheel 215 drives the connecting rod 1 214 to rotate with the eccentric block 213. Rotate until the through hole 2131 matches the blind hole 2121. If the eccentric blocks 1 212 and eccentric blocks 213 are symmetrically set, rotate the fixed rotating wheel 215 180 degrees. After rotation, move the fixed rotating wheel 215 towards the eccentric block 213 until the keyway 218 of the fixed rotating wheel 215 is engaged with the protrusion 219. At this time, continue to start the motor 1 203 to perform the scraping operation. The limit wheel 216 will again abut against the fixed rotating wheel 215 to achieve a self-locking state. At the same time, it is also necessary to start the motor 2 400 to move the device body 100 during the operation.

[0054] Example 5, see Figure 10This embodiment is an impactor of a hydraulic high-frequency vibration shovel device, including a shovel 300, a chisel 500, a piston 600, a cylinder 700, and a nitrogen chamber 800 connected thereto. The working process of the hydraulic impactor is divided into four stages: piston 600 return motion; piston 600 return braking; piston 600 stroke motion; piston 600 impact stop.

[0055] During the return stroke of piston 600, high-pressure oil enters the lower chamber of piston 600 through the reversing valve, pushing piston 600 upward. This movement causes the impact piston 600 to return quickly, preparing for the next impact. At the same time, the drain port opens, allowing oil to be discharged from the upper chamber of piston 600, ensuring that piston 600 rises smoothly.

[0056] During the return stroke braking phase of piston 600, when piston 600 rises to a certain position, the reversing valve begins to switch, and high-pressure hydraulic fluid begins to enter the upper chamber of piston 600. At this time, the hydraulic fluid in the lower chamber of piston 600 is sealed off, forming back pressure and preventing piston 600 from continuing to rise. Through this braking action, the hydraulic impact mechanism can precisely control the position of piston 600, ensuring the accurate application of impact force.

[0057] During the piston 600 stroke, after the braking phase, the directional valve fully switches, and high-pressure hydraulic fluid continues to enter the upper chamber of piston 600. Under the action of the high-pressure hydraulic fluid, piston 600 rapidly impacts downwards, generating a powerful impact force. This impact force is the main power source for the scraping operation, used to break up and separate the road surface layer.

[0058] After piston 600 strikes and pauses, it continues to move downwards a short distance due to inertia after impacting the drill bit 500. At this point, the directional valve begins to prepare for the next reversal, closing the inlet and outlet ports. This pause allows the hydraulic vibrator to smoothly transition to the next working cycle, avoiding excessive impact on the drill bit 500 and the machinery.

[0059] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0060] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A high-efficiency asphalt pavement scraping device, comprising a device body (100), a drive unit (200) disposed at the front end of the device body (100), a second motor (400) disposed at the rear of the device body (100), and a scraper (300) disposed below the drive unit (200), characterized in that: The drive unit (200) is provided with an eccentric block one (212) and an eccentric block two (213). The eccentric block one (212) is fixedly mounted on the vibration shaft (208). The eccentric block two (213) is close to the eccentric block one (212) and rotatably mounted on the vibration shaft (208). The eccentric block two (213) is connected to a fixed rotating wheel (215) through a connecting rod one (214). Rotating the fixed rotating wheel (215) causes the phase angle of the eccentric block two (213) and the eccentric block one (212) to change so as to generate different excitation forces, which are transmitted to the shovel (300) to shovel asphalt pavement of different thicknesses.

2. The high-efficiency asphalt pavement scraping equipment according to claim 1, characterized in that: The drive unit (200) includes a top cover (201), a support plate (202) disposed below the top cover (201), a motor (203) disposed on the support plate (202), an output shaft (204) disposed at the output end of the motor (203), a support column (209) disposed on the support plate (202), and a spring (210) for reducing the impact on the support plate (202).

3. The high-efficiency asphalt pavement scraping equipment according to claim 2, characterized in that: A drive wheel (205) is rotatably mounted on the output shaft (204), and a driven wheel (207) is supported next to the drive wheel (205). The drive wheel (205) and the driven wheel (207) are rotatably connected by a belt (206).

4. The high-efficiency asphalt pavement scraping equipment according to claim 3, characterized in that: The vibration shaft (208) is fixedly installed inside the driven wheel (207). A blind hole (2121) is provided in the central area of ​​the eccentric block one (212), and a through hole (2131) is provided in the central area of ​​the eccentric block two (213). The through hole (2131), the blind hole (2121), and the connecting rod one (214) are matched in size. One end of the connecting rod one (214) passes through the through hole (2131) and enters the blind hole (2121).

5. The high-efficiency asphalt pavement scraping equipment according to claim 4, characterized in that: A connecting hole (2141) is provided on the fixed rotating wheel (215) corresponding to the position of the through hole (2131). The other end of the connecting rod (214) passes through the connecting hole (2141) and is fixedly connected to the fixed rotating wheel (215). A keyway (218) is provided on the inner side of the fixed rotating wheel (215) near the vibration shaft (208). A protrusion (219) matching the size of the keyway (218) is provided on the vibration shaft (208). When the protrusion (219) is not engaged in the keyway (218), the fixed rotating wheel (215) can rotate around the vibration shaft (208) and the fixed rotating wheel (215) can move axially along the vibration shaft (208).

6. The high-efficiency asphalt pavement scraping device according to claim 5, characterized in that: The fixed rotating wheel (215) is provided with a limiting shell (211) in the middle, and the limiting shell (211) is provided with limiting wheels (216) at both ends. The size of the limiting wheel (216) matches the inner diameter of the limiting shell (211) and the limiting wheel (216) can enter the limiting shell (211).

7. The high-efficiency asphalt pavement scraping device according to claim 6, characterized in that: The limiting wheel (216) abuts against the fixed rotating wheel (215).

8. The high-efficiency asphalt pavement scraping device according to claim 7, characterized in that: The inner side of the limiting wheel (216) is evenly provided with several side plates (220), and a connecting shaft (221) is provided between adjacent side plates (220). The connecting shaft (221) is rotatably connected to a connecting rod (222) and a connecting rod (223).

9. The high-efficiency asphalt pavement scraping equipment according to claim 8, characterized in that: The second connecting rod (222) and the third connecting rod (223) are rotatably connected by the second connecting shaft (225), and a second spring (226) is provided between adjacent second connecting rods (222) and third connecting rod (223).

10. The high-efficiency asphalt pavement scraping equipment according to claim 9, characterized in that: The second spring (226) is fixedly connected to the limiting wheel (216). The second connecting rod (222), the third connecting rod (223), and the second spring (226) are all located inside the limiting shell (211). The limiting wheel (216) can move axially along the vibration shaft (208).

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