A paving device for a dredged sand concrete road surface

Abstract

The present application relates to the technical field of road construction device, specifically relates to a kind of dredging sand concrete pavement paving device, including mounting seat and the leveling assembly connected on mounting seat, the leveling assembly includes the forming plate, pre-pressing plate and spade flat connected in sequence, the forming plate is used to carry out final forming to road surface, the side of pre-pressing plate connected forming plate is lower than the side connected spade flat, the side of spade flat connected pre-pressing plate is higher than the side away from pre-pressing plate, the upper surface of spade flat is equipped with even groove, vibration component is arranged in even groove, even groove is equipped with slurry return port towards the side of pre-pressing plate, the length of slurry return port is adapted to the width of pre-pressing plate.Solve the existing device for poor flowability of dredging sand dry hard concrete internal cavity, the problem of insufficient density, effectively improve the paving quality of dredging sand concrete pavement, provide a scheme for the building material application of dredging sand road engineering.

Description

Technical Field

[0001] This invention relates to the field of road construction equipment technology, and in particular to a paving device for dredged sand concrete pavement. Background Technology

[0002] The annual dredging volume of the Yangtze River main channel is approximately 80 million m³, with a massive amount of maintenance dredging occurring in the lower reaches. Dredged sand from the lower Yangtze is characterized by extremely fine particle size (fineness modulus 0.1~0.3) and high mud content (6.5%~25.8%). Traditional disposal methods involve dumping it into deep channels, resulting in resource waste, secondary pollution, and poor engineering utilization value. Dredged sand cement-based materials can achieve a 28-day compressive strength of 35.1~37.0 MPa and an abrasion resistance of 12.5 h / (kg / m²), meeting the mechanical properties of C30 concrete. Utilizing dredged sand as building materials is an effective way to "turn waste into treasure."

[0003] In existing technologies, conventional slipform pavers or asphalt pavers are typically used for paving ordinary cement concrete or asphalt concrete. During the paving process, a slab leveling plate is used for initial leveling and compaction. However, due to its dry-hardness, dredged sand concrete has extremely poor fluidity, and the slipform slab of a conventional paver is insufficient to make it flow and compact, easily leading to internal voids and poor paving. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that existing slipform pavers or asphalt pavers are difficult to apply to the paving of dry-hard concrete pavement made of dredged sand, and to provide a paving device for dredged sand concrete pavement.

[0005] In a first aspect, the present invention provides a paving device for dredged sand concrete pavement, including a mounting base and a leveling component connected to the mounting base. The leveling component includes a forming plate, a pre-compression plate, and a shovel plate connected in sequence. The forming plate is used to perform final shaping of the pavement. The side of the pre-compression plate connected to the forming plate is lower than the side connected to the shovel plate. The side of the shovel plate connected to the pre-compression plate is higher than the side away from the pre-compression plate. A uniform groove is formed on the upper surface of the shovel plate. A vibration component is provided in the uniform groove. A return slurry port is formed on the side of the uniform groove facing the pre-compression plate. The length of the return slurry port is adapted to the width of the pre-compression plate.

[0006] Both the preload slab and the shovel plate are inclined panels, but in opposite directions. The direction in which the forming slab, preload slab, and shovel plate are connected sequentially is the direction in which they are used for paving along the road surface. The shovel plate contacts the material stockpile first, and the forming slab shapes the road surface last. The widths of the forming slab, preload slab, and shovel plate can be adapted to each other; the specific length and width parameters are set according to actual needs.

[0007] Due to the dry-hardening characteristics of dredged sand concrete, it has poor fluidity but extremely fine particles. During paving, localized material accumulation may occur, leading to localized under- or over-compaction during subsequent compaction. The solution employed in this invention involves lowering the bottom of the shovel plate (the side furthest from the preload plate) below the height of the material accumulation during paving, thereby shoveling the material onto a slope. As the shovel plate moves towards the paving direction, the accumulated material gradually increases on the slope and eventually falls into the uniformization trough. The dredged sand concrete in the uniformization trough achieves uniform distribution under the action of vibrating components. As the dredged sand concrete continues to be added, its height rises to the return slurry inlet, and it overflows evenly into the paved surface, refilling the voids in the dredged sand skeleton, achieving redistribution and forming a cyclical homogenization mechanism. After being redistributed by the shovel plate, the pre-compacting plate and the forming plate further compact the paved road surface, achieving the effect of layered compaction in one paving, improving the density of the paved road surface, solving the problem that the existing paving equipment is difficult to adapt to the construction of dredged sand dry hard concrete, and each part adopts a plate structure and has no dead corner structure, effectively avoiding the material adhesion and blockage problem caused by the high mud content of dredged sand concrete.

[0008] Optionally, a cutting plate is connected to one side of the lower end of the shovel plate.

[0009] Optionally, the angle between the pre-pressing plate and the vertical direction is smaller than the angle between the shovel plate and the vertical direction, so that the shovel plate has a larger tilt range and is easier to shovel.

[0010] Of course, in actual use, the shovel plate should be tilted at an excessive angle, which could prevent the dredged sand and concrete from being pushed along the slope into the uniform channel.

[0011] Optionally, the forming plate is connected to the side of the pre-pressing plate that is higher than the side away from the pre-pressing plate.

[0012] Optionally, the inclination angle of the molding plate is 1°-3°, which can exert a certain compressive force on the concrete during final molding and further improve the density.

[0013] Optionally, the return slurry outlet is lower than the lower side of the uniform trough opening, so that the slurry can flow out smoothly from the return slurry outlet and will not accumulate in the uniform trough.

[0014] Optionally, the preload plate and the shovel plate are hinged together, which can adjust the relative angle between the two to adapt to the construction requirements of different paving thicknesses.

[0015] Optionally, the vibrating component is a vibrating roller, and the surface of the vibrating roller has a non-stick coating.

[0016] Optionally, a vibrating component is also included. The vibrating component is connected to the mounting base and is located on the side close to the shovel plate. During the paving operation, the vibrating component first vibrates the dredged sand concrete in front to eliminate air inside the dredged sand concrete, avoid the formation of voids inside, improve the fluidity of the concrete, and facilitate the subsequent leveling component operation.

[0017] Optionally, the vibrating component includes a supporting beam, and a plurality of vibrating rods are spaced apart along the length of the supporting beam.

[0018] Optionally, the vibratory rod can be raised and lowered to adapt to different paving depths, thereby improving the applicability of vibration.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The paving device for dredged sand concrete pavement described in this invention, through the cooperation of a shovel plate, its uniform groove, and a vibrating component, can re-collect, uniformize, and improve the fluidity of the accumulated dredged sand dry-hard concrete during the paving process, facilitating re-paving. Excess slurry can be returned through the return slurry port, and then pre-pressed by a pre-pressing plate and finally pressed by a forming plate. This solves the problems of internal voids and insufficient density that are common in traditional paving devices for dredged sand dry-hard concrete with poor fluidity, effectively improving the paving quality of dredged sand concrete pavement. It provides equipment support for the application of dredged sand as a building material in road engineering. Moreover, all parts adopt a plate-like structure and have no dead corners, effectively avoiding material adhesion and clogging problems caused by the high mud content of dredged sand concrete, and has strong continuous operation capability. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a paving device for dredged sand concrete pavement according to the present invention. Figure 1 ; Figure 2 This is a three-dimensional structural diagram of a paving device for dredged sand concrete pavement according to the present invention. Figure 2 ; Figure 3 This is a structural elevation diagram of a paving device for dredged sand concrete pavement according to the present invention. Figure 4 This is a schematic diagram of the structure of the vibrating assembly of the present invention; Figure 5 This is a three-dimensional structural diagram of the leveling component of the present invention. Figure 1 ; Figure 6 This is a three-dimensional structural diagram of the leveling component of the present invention. Figure 2 ; Figure 7 This is a schematic diagram of the leveling component of the present invention.

[0021] Icons: 1-Mounting base, 11-First drive component, 12-Second drive component, 2-Leveling component, 3-Vibration component, 21-Forming plate, 22-Pre-compression plate, 23-Shovel plate, 231-Equalizing groove, 232-Vibration component, 233-Return slurry port, 31-Support beam, 32-Vibrator. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0023] Unless otherwise specified, the terms "upper," "lower," "left," "right," "center," "inner," and "outer," etc., used in the description of specific embodiments of the present invention to indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the product / equipment / device is usually placed during use. These terms are merely for the purpose of facilitating the description of the present invention or simplifying the description in specific embodiments, and for enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a particular device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on the present invention.

[0024] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," "parallel," and "coaxial" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, parallel, or coaxial. Slight tilt or deviation is permissible, as long as it does not affect the normal function of the relevant component. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be perfectly horizontal; a slight tilt is acceptable. "Coaxial" means that two components are arranged as coaxially as possible, allowing them to move coaxially or approximately coaxially when their relative positions change. Alternatively, it can be simplified to mean that the corresponding device / component / element, when arranged in "horizontal," "vertical," "suspended," "parallel," or "coaxial" directions, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. For example, the deviation in the "coaxial" direction is controlled within 0.2-1mm, preferably within 0.2-0.5mm. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the solution of the present invention.

[0025] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0026] Furthermore, in the description of the embodiments of the present invention, "several", "more than", and "a number of" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0027] Furthermore, in the description of the technical solution of this invention, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to connection methods commonly used in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0028] Example 1 like Figures 1-7 As shown, the paving device for dredged sand concrete pavement used in this invention includes: Mounting base 1; Leveling component 2 is connected to mounting base 1. Leveling component 2 includes a forming plate 21, a pre-pressing plate 22, and a shovel plate 23 connected in sequence. The forming plate 21 is used to form the road surface. The pre-pressing plate 22 is connected to the forming plate 21 on one side and lower than the side connected to the shovel plate 23 on the other side. The side of the shovel plate 23 closer to the pre-pressing plate 22 is higher than the side farther from the pre-pressing plate 22. The upper surface of the shovel plate 23 is provided with a uniform groove 231. A vibration component 232 is provided in the uniform groove 231. The side of the uniform groove 231 facing the pre-pressing plate 22 is provided with a return slurry port 233. The length of the return slurry port 233 is adapted to the width of the pre-pressing plate 22. Vibrating component 3 is connected to the mounting base 1 and is located on the side close to the shovel plate 23.

[0029] Specifically, as in this embodiment, such as Figures 1-3 As shown, mounting base 1 adopts a three-sided enclosed groove-shaped bracket form for connecting paving machinery, such as... Figure 1-3As shown, it can also be equipped with a walking component to form an independent device. In this embodiment, the mounting base 1 includes a plate with a U-shaped (or groove-shaped) plane. The two side arm plates of the U-shaped plate are connected to the forming plate 21 through connectors. The number and size of the connectors can be determined according to the longitudinal length, width and thickness of the forming plate 21. The pre-pressing plate 22 is connected to the ear plate of the mounting base 1 at one end near the shovel plate 23. The U-shaped plate is connected near the U-shaped groove for installing the first driving component 11. The tail of the U-shaped plate is used to set the vibrating component 3.

[0030] In this embodiment, the forming plate 21 and the pre-pressing plate 22 are integrally formed, or they can be two plates connected together. The mounting base 1 is connected to the forming plate 21 or the pre-pressing plate 22 via a connecting rod. The forming plate 21 has an inclination angle in a first direction that gradually moves away from the paved road surface. This inclination angle should not be too large, and the inclination angle can be between 1° and 3°. For example, in some specific embodiments, the inclination angle can be 1°, 2°, and 3°, or it can be between 3° and 5°.

[0031] The pre-compression plate 22 and the shovel plate 23 can be hinged or fixedly connected. The hinged connection can have a locking element for locking the adjustable angle. If the angle of the shovel plate 23 is adjustable, a first drive member 11 can be provided on the mounting base 1. The output end of the first drive member 11 is hinged to the shovel plate 23. The first drive member 11 is adapted to drive the shovel plate 23 to rotate relative to the pre-compression plate 22, thereby adjusting the height of the lower end of the shovel plate 23, i.e., adjusting the required leveling and compaction height. Of course, when adjusting the height of the end of the shovel plate 23, the tilt angle of the shovel plate 23 should not be too large, so as not to prevent the dredged sand concrete from being unable to be pushed along the slope to the uniform channel 231. Furthermore, in the direction of gravity, the lower end of the shovel plate 23 should be higher than the height of the forming plate 21 or the lower end of the forming plate 21.

[0032] The shovel plate 23 is provided with a uniform groove 231 with a top opening. The width of the uniform groove 231 is 200-400mm, and the depth of the uniform groove 231 is greater than the thickness of the shovel plate 23. The bottom of the uniform groove 231 protrudes downward from the lower side of the shovel plate 23 and is higher than the bottom of the shovel plate 23. For example, the thickness is 150-250mm. A vibrating component 232 is provided in the uniform groove 231, such as a vibrating roller arranged along the length of the uniform groove 231. The speed of the vibrating roller can be 300-600r / min, which is conducive to the uniform dispersion of dredged sand concrete material. A return slurry port 233 is provided on the side wall of the uniform groove 231 that is relatively close to the pre-pressing plate 22. The position of the return slurry port 233 can be 1 / 3-1 / 2 of the depth of the uniform groove 231, but higher than the top surface of the vibrating roller, to prevent the slurry from flowing out prematurely before it is fully and evenly dispersed, thus ensuring the homogenization effect. The length direction of the return slurry outlet 233 is the width direction of the paved road surface, and the height of the return slurry outlet 233 in the gravity direction is lower than the height of the lower side of the uniform groove 231.

[0033] The vibratory component 3 includes a supporting beam 31 connected to the mounting base 1. Several vibratory rods 32 are arranged parallel to each other along the width of the paved surface on the supporting beam 31. The vibratory rods 32 are suitable for insertion into the dredged sand concrete, and through vibration, pre-level the loosely laid dredged sand concrete (especially the lower part) to eliminate air bubbles and prevent voids. The vibratory rods 32 can be configured to be raised and lowered as needed. For example, the mounting base 1 and the supporting beam 31 can be connected via a second drive component 12. The second drive component 12 is suitable for driving the supporting beam 31 closer to or further away from the paved surface, thereby adjusting the vibration depth of the vibratory rods 32 to adapt to different paving depths, improve vibration applicability, and increase compaction.

[0034] In some embodiments, the return slurry outlet 233 can be an opening that slopes downward from the inside out, with a downward slope angle of 10°-20°, which can guide the overflowing dredged sand concrete slurry down the opening and ensure that excess material overflows smoothly; the return slurry outlet 233 can also be in the form of a height on one side of the trough being greater than the height on the other side of the trough, that is, in the form of a trumpet-shaped opening, which can reduce the opening for slurry to flow out, control the overflow speed of slurry, avoid a large amount of slurry flowing out at one time and affecting the paving smoothness, and at the same time ensure that the slurry overflows evenly, further improving the homogenization effect.

[0035] In some embodiments, the surface of the vibrating roller is coated with a non-stick coating, such as a nano-ceramic coating, to reduce the adhesion of dredged sand to concrete.

[0036] In some optional embodiments, the vibration frequency of the vibrating component 3 is higher when the concrete has a low mud content than when the concrete has a high mud content. For example, when the mud content is 6.5%, the frequency can be 35-45Hz, and when the mud content is 25.8%, the frequency is 25-35Hz.

[0037] In some embodiments, the end of the shovel plate 23 in the first direction is provided with a cutting plate parallel to the paving surface, which can stably cut into the dredged sand concrete. Specifically, the cutting plate can be a hard alloy plate welded and fixed to the end of the shovel plate 23, with the cutting edge facing the dredged sand concrete to be paved. Its thickness is set to 10-20mm, ensuring structural strength during cutting and preventing edge curling deformation over long-term use, while also avoiding excessive thickness that would increase cutting resistance and affect the paving operation's efficiency. The cutting edge of the cutting plate is chamfered, with an angle of 30°-45°, ensuring sufficient sharpness to cut into the accumulated concrete while preventing the cutting edge from becoming too brittle and prone to chipping, thus extending the service life of the cutting plate.

[0038] During use, as the paver moves in the paving direction (e.g.) Figure 3(Moving from center to right), the shovel plate 23 can shovel the material onto the slope. As paving continues, the dredged sand concrete on the slope increases and eventually falls into the uniform trough 231. A vibrating roller is installed in the uniform trough 231, and the dredged sand concrete in the uniform trough 231 is evenly distributed under the action of the vibrating roller. As the dredged sand concrete continues to be filled, its height will rise to the return slurry port 233, and it will overflow evenly into the paved road surface through the return slurry port 233, achieving redistribution. Finally, the paved road surface is further compacted and shaped by the pre-compacting plate 22 and the forming plate 21. In this application, the initial compaction by the vibrating component 3 is followed by the use of the leveling component 2 to re-uniformly and densely distribute the unevenly distributed material to the paved road surface for compaction, avoiding uneven paving and improving the paving quality.

[0039] The paving device for dredged sand concrete pavement described in this invention, through the cooperation of a shovel plate, its uniform groove, and a vibrating component, can re-collect, uniformize, and improve the fluidity of the accumulated dry-hard dredged sand concrete during the paving process, facilitating re-paving. Excess slurry can be returned through the return slurry port, and then pre-pressed by a pre-pressing plate and finally pressed by a forming plate. This solves the problems of internal voids and insufficient density that are common in traditional paving devices for dry-hard dredged sand concrete with poor fluidity, effectively improving the paving quality of dredged sand concrete pavement and providing equipment support for the application of dredged sand as a building material in road engineering.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A paving device for dredged sand concrete pavement, characterized in that, include: Mounting base (1); A leveling component (2) is connected to the mounting base (1). The leveling component (2) includes a forming plate (21), a pre-pressing plate (22), and a shovel plate (23) connected in sequence. The forming plate (21) is used to form the road surface. The pre-pressing plate (22) is connected to the forming plate (21) on one side and lower than the side connected to the shovel plate (23) on the other side. The side of the shovel plate (23) closer to the pre-pressing plate (22) is higher than the side away from the pre-pressing plate (22). The upper surface of the shovel plate (23) is provided with a uniform groove (231). A vibration component (232) is provided in the uniform groove (231). The side of the uniform groove (231) facing the pre-pressing plate (22) is provided with a return slurry port (233). The length of the return slurry port (233) is adapted to the width of the pre-pressing plate (22).

2. The paving device for dredged sand concrete pavement according to claim 1, characterized in that, A cutting plate is connected to the lower side of the shovel plate (23).

3. The paving device for dredged sand concrete pavement according to claim 1, characterized in that, The forming plate (21) is connected to the side of the pre-press plate (22) which is higher than the side away from the pre-press plate (22).

4. The paving device for dredged sand concrete pavement according to claim 3, characterized in that, The tilt angle of the molding plate (21) is 1°-3°.

5. A paving device for dredged sand concrete pavement according to claim 1, characterized in that, The return slurry inlet (233) is lower than the lower side of the opening of the uniform groove (231).

6. A paving device for dredged sand concrete pavement according to claim 1, characterized in that, The preload plate (22) is hinged to the shovel plate (23).

7. A paving device for dredged sand concrete pavement according to any one of claims 1-6, characterized in that, The vibrating component (232) is a vibrating roller, and the surface of the vibrating roller has a non-stick coating.

8. A paving device for dredged sand concrete pavement according to claim 7, characterized in that, It also includes a vibrating component (3), which is connected to the mounting base (1) and is located on the side close to the shovel plate (23).

9. A paving device for dredged sand concrete pavement according to claim 8, characterized in that, The vibrating component (3) includes a supporting beam (31) and a plurality of vibrating rods (32) are arranged at intervals along the length of the supporting beam (31).

10. A paving device for dredged sand concrete pavement according to claim 9, characterized in that, The vibrating rod (32) can be raised and lowered.

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