Rotary sand gravel paver

Abstract

The invention discloses a rotary sand gravel paver, and relates to the field of gravel paving, the paver comprises an assembly support, a paving assembly capable of moving along the length direction of the assembly support is arranged on the assembly support, the paving assembly comprises a mounting support, a portal frame, a rotary paving disc and a power assembly, the portal frame is arranged at the bottom of the mounting support, and the rotary paving disc is arranged on the portal frame. A rotary paving disc is arranged in the portal frame, a power assembly is arranged at the upper end of the mounting bracket and drives the rotary paving disc to rotate, and in the paving process, the rotary paving disc is driven by the power assembly to rotate, so that friction can be generated among sand gravels, protruding tips are shortened through grinding to reduce particle gaps, and meanwhile the sand gravels are ground; the smoothness of the surface of the sand gravel layer is guaranteed, the compactness of the paving layer is enhanced, the problem that gaps are too large due to the irregular shape of sand gravel is effectively solved, and the follow-up bearing stability is improved.

Description

Technical Field

[0001] This invention belongs to the field of gravel paving technology, specifically, it relates to a rotary gravel paver. Background Technology

[0002] Gravel paving is a crucial process in the construction of infrastructure such as roads, plazas, and parking lots. Its core function is to evenly and smoothly lay graded gravel (a material composed of sand and gravel of different particle sizes mixed in a designed ratio) on the base or subbase layer to form a load-bearing structural layer. This provides a stable foundation for subsequent surface layer construction (such as asphalt or concrete) and can also be used directly as the surface layer for simple roads (such as rural roads or temporary access roads). Its construction quality directly affects the load-bearing capacity, durability, and safety of the project.

[0003] Chinese utility model patent CN201738217U discloses a new type of material paver, including a main frame and 2-4 walking tracks mounted on both sides of the main frame via sliding mounting columns to support the main frame; an independent detachable material conveying device is provided in the lower middle part of the main frame, the front end of the material conveying device extends to the front of at least one feeding position and the rear end extends to the front of the paver; the material conveying device includes a mounting frame, side baffles on both sides of the mounting frame and a feeder mounted on the mounting frame, the mounting frame, side baffles and feeder form a material trough to receive materials, and the mounting frame is connected to the main frame or feeding position frame through rigid connectors.

[0004] The material paver also has the following defects: In gravel paving construction, gravel (especially natural gravel) generally has irregular particle shape due to differences in the formation process (such as weathering and water erosion). Some particles are flat, angular or needle-shaped, rather than ideally round or cubic. This irregular shape can easily lead to the particles not being tightly interlocked during the paving process, thus forming excessive gaps, which directly affects the compaction, bearing capacity and durability of the paved layer. In view of this, the present invention is proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a rotary gravel paver that can overcome or at least partially solve the above problems.

[0006] To address the issue raised in the background section regarding the irregular shape of gravel particles during paving due to variations in their formation process—with some particles being flat, angular, or needle-like rather than ideally round or cubic—this irregular shape can lead to insufficient interlocking between particles during paving, resulting in excessively large gaps that directly affect the compaction, load-bearing capacity, and durability of the paved layer. The basic concept of the technical solution adopted in this invention is as follows: A rotary gravel paver includes an assembly frame with a paving component that can move along the length of the assembly frame. The paving component includes a mounting frame, a gantry, a rotary paving disc, and a power component. The gantry is located at the bottom of the mounting frame, and the rotary paving disc is located inside the gantry. The power component is located at the top of the mounting frame and drives the rotary paving disc to rotate.

[0007] Furthermore, the outer edge of the rotary paver near the bottom is provided with rounded corners, and the outer edge of the rotary paver near the top is fixedly connected with an inclined curved extension.

[0008] Furthermore, an annular sealing cover is provided between the mounting bracket and the gantry frame. The power end of the power component is inserted into the interior of the annular sealing cover and is detachably connected to a drive gear. A transmission gear is rotatably connected to the other side of the interior of the annular sealing cover. The transmission gear meshes with the drive gear, and the drive gear is connected to the rotating paving disc.

[0009] Furthermore, a material-gathering wheel is provided at the angle between the rotary paver and the vertical sides of the gantry. The material-gathering wheel rotates in the opposite direction to the rotary paver. The material-gathering wheel is provided with a bonding part, which is close to the inclined bending extension.

[0010] Furthermore, a transmission column is fixedly connected to the bottom of the transmission gear, and a cross-shaped transmission plate is fixedly connected to the bottom of the transmission column. The cross-shaped transmission plate is slidably connected to the connecting sleeve. A rotating ring is rotatably connected to the upper end of the rotating paving disc. Left and right opposing electric telescopic rods are detachably connected to the top of the inner side of the gantry. The telescopic ends of the two electric telescopic rods are connected to the upper end of the rotating ring. A universal ball is provided between the telescopic ends of the electric telescopic rods and the rotating ring.

[0011] Furthermore, a sliding rod is provided above the material gathering wheel, and the sliding rod has a built-in motor that drives the material gathering wheel to rotate. A connecting rod is fixedly connected to the upper end of the sliding rod, and the connecting rod is detachably connected to the top inner side of the gantry frame.

[0012] Furthermore, a storage tube is provided between the sliding rod and the connecting rod, and the sliding rod is slidably connected to the inside of the storage tube. The sliding rod is rotatably connected to a limiting part near the bottom outer wall, and the limiting part is locked above the inclined bending extension.

[0013] Furthermore, it also includes a moving component, which includes a winding assembly, a traction rope, and limit wheels. The winding assembly is installed near the center of the upper part of the mounting bracket. Limit wheels are installed at both ends of the mounting bracket. A traction rope is provided on the winding assembly, and the two ends of the traction rope pass through the limit wheels on both sides and are connected to the two sides of the paving assembly.

[0014] Furthermore, it also includes an adjustment component, which includes a U-shaped frame, a connector, a support, and a telescopic cylinder. The two ends of the mounting bracket are rotatably connected to the U-shaped frame, and the two sides of each U-shaped frame are slidably connected to the connector. The bottom of the two connectors on the same side is fixedly connected to the support. The outer walls of both sides of the U-shaped frame are rotatably connected to the telescopic cylinder. The telescopic end of the telescopic cylinder is rotatably connected to the support. Rotating wheels are provided on both sides of the bottom of the support. A drive component is provided on the support, and the drive component drives the rotating wheels to rotate.

[0015] Furthermore, a vertical connecting pipe is fixedly connected to the upper dead corner of the mounting bracket, and each vertical connecting pipe is rotatably connected to a sliding wheel that is opposite to the upper and lower parts. Each of the upper and lower sliding wheels is locked onto the frame of the mounting bracket.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: 1. In this invention, during the paving process, the rotating paving disc rotates under the drive of the power component, which can generate friction between the gravel and sand, shorten the protruding tips to reduce the gaps between particles, and at the same time grind the gravel and sand, ensuring the flatness of the gravel layer surface and enhancing the density of the paved layer. This effectively solves the problem of excessive gaps caused by the irregular shape of the gravel and sand, and improves the subsequent load-bearing stability. The rounded corner design at the bottom of the rotating paving disc can push the protruding gravel and sand forward, and the inclined curved extension at the top can prevent excess gravel and sand from falling on the top of the paving disc, preventing the accumulation of gravel and sand from affecting the flatness of the paving, reducing the subsequent manual trimming process, and improving paving efficiency.

[0017] 2. In this invention, the paving component is connected to the assembly bracket via upper and lower opposing sliding wheels. Driven by the moving component, it can move stably laterally along the length of the assembly bracket without manual pushing or adjusting its position, reducing manpower input. At the same time, it ensures a uniform paving path and avoids local omissions or repeated paving. The material gathering wheel at the angle between the paving disc and the gantry rotates in opposite directions, which can transport the sand and gravel in the gap to the center. The bonding part further prevents the sand and gravel from getting stuck, avoiding the paving disc from stopping due to material jamming, ensuring continuous paving operation and reducing equipment failure and maintenance time.

[0018] 3. In this invention, the electric telescopic rod can drive the rotating paving disc to rise and fall as a whole, meeting the requirements of different paving thicknesses. The difference in the extension length of the telescopic rods on both sides, combined with the universal ball, can tilt the paving disc to adjust the local paving thickness, adapt to the slight undulations of the roadbed surface, and improve the overall uniformity of the paving layer thickness.

[0019] 4. In this invention, the material gathering wheel slides with the receiving tube through the sliding rod, and the limiting part moves up and down with the rotating paving disc. There is no need to manually adjust the position of the material gathering wheel, which ensures that the material gathering wheel always maintains a suitable distance from the paving disc, ensuring a stable anti-jamming effect. At the same time, the rotation design of the limiting part reduces friction loss and extends the service life of the components.

[0020] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0021] In the attached diagram: Figure 1 This is a schematic diagram of the structure of a rotary gravel paver according to the present invention; Figure 2 This is a front view structural diagram of the rotary gravel paver of the present invention; Figure 3 This is a top view schematic diagram of the rotary gravel paver of the present invention; Figure 4 This is a schematic diagram of the adjustment component structure of the present invention; Figure 5 This is a schematic diagram of the paving component structure of the present invention; Figure 6 This is a schematic cross-sectional view of one side of the paving component of the present invention; Figure 7 This is a schematic diagram of the polymer wheel structure of the present invention.

[0022] In the diagram: 100, assembly bracket; 200. Adjustment component; 201. Rectangular frame; 202. Insertion pipe; 203. Support part; 204. Rotating wheel; 205. Telescopic cylinder; 206. Drive component; 300. Paving assembly; 301. Mounting bracket; 302. Vertical connecting pipe; 303. Sliding wheel; 304. Annular sealing cover; 305. Gantry frame; 306. Power assembly; 307. Rotating paving disc; 308. Inclined bending extension; 309. Aggregating wheel; 310. Drive gear; 311. Transmission gear; 312. Transmission column; 313. Cross-shaped transmission plate; 314. Connecting sleeve; 315. Fitting part; 316. Limiting part; 317. Sliding rod; 318. Receiving pipe; 319. Connecting rod; 320. Electric telescopic rod; 321. Rotating ring; 400. Moving component; 401. Rewinding component; 402. Traction rope; 403. Limiting wheel. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] Example 1: Reference Figures 1-3As shown, this is a schematic diagram of a rotary gravel paver in this embodiment. The rotary gravel paver in this embodiment includes an assembly support 100, with adjustment components 200 at both ends of the assembly support 100. A paving component 300 that can move along the length of the assembly support 100 is provided on the assembly support 100. A moving component 400 is provided on the assembly support 100, which can drive the paving component 300 to move laterally. In this embodiment, the assembly support 100 is positioned above the gravel being poured in, and the paving component 300 is driven to move laterally by the moving component 400 to pave the gravel below. The adjustment components 200 can adjust the height of the assembly support 100 and the tilt of the left and right ends according to the actual scene.

[0025] Referring to Figure 4, which is a schematic diagram of the adjustment component structure in this embodiment, the adjustment component 200 includes a U-shaped frame 201, a connector 202, a support 203, and a telescopic cylinder 205. The two ends of the assembly bracket 100 are rotatably connected to the U-shaped frame 201, and the two sides of each U-shaped frame 201 are slidably connected to the connector 202. The bottom of the two connectors 202 on the same side is fixedly connected to the support 203. The outer walls of both sides of the U-shaped frame 201 are rotatably connected to the telescopic cylinder 205. The telescopic end of the telescopic cylinder 205 is rotatably connected to the support 203. In this embodiment, the height of the assembly bracket 100 can be adjusted by extending and shortening the telescopic cylinders 205 on both sides. The height difference generated by the telescopic cylinders 205 on both sides of the U-shaped frame 201 causes the assembly bracket 100 to tilt, thereby allowing the assembly bracket 100 to be adjusted according to the actual situation.

[0026] Referring to Figure 4, rotating wheels 204 are provided on both sides of the bottom of the support 203, and a drive assembly 206 is provided on the support 203. The drive assembly 206 drives the rotating wheels 204 to rotate. In this embodiment, the rotating wheels 204 are driven to rotate by the drive assembly 206, thereby enabling the assembly bracket 100 to move, making the transport of the assembly bracket 100 more convenient.

[0027] Referring to Figure 5, which is a schematic diagram of the paving component structure in this embodiment, the paving component 300 includes a mounting bracket 301, a gantry frame 305, a rotary paving disc 307, and a power component 306. The gantry frame 305 is provided at the bottom of the mounting bracket 301, and the rotary paving disc 307 is provided inside the gantry frame 305. The power component 306 is provided at the upper end of the mounting bracket 301. The power component 306 drives the rotary paving disc 307 to rotate. In this embodiment, by driving the rotary paving disc 307 to rotate through the power component 306, the gravel can rotate and rub against other gravel during the paving process, which can shorten the protruding tips, reduce gaps, and the rotary paving disc 307 can also grind the gravel, and ensure the flatness of the gravel layer surface.

[0028] Referring to Figure 5, to prevent gravel from being located on top of the rotary paving disc 307 during the movement of the paving assembly 300, resulting in uneven paving, the following implementation method can be adopted: the rotary paving disc 307 is provided with rounded corners near the bottom outer edge, and an inclined curved extension 308 is fixedly connected to the rotary paving disc 307 near the upper outer edge. In this embodiment, the rounded corners at the bottom of the rotary paving disc 307 can push protruding gravel forward, and the inclined curved extension 308 can prevent gravel from falling onto the upper end of the rotary paving disc 307 when pushing excess gravel.

[0029] Referring to Figure 5, in order to enable the mounting bracket 301 to move along the length of the assembly bracket 100, the specific connection structure can adopt the following implementation method: a vertical connecting pipe 302 is fixedly connected to the upper dead corner of the mounting bracket 301, and each vertical connecting pipe 302 is rotatably connected to a vertically opposite sliding wheel 303. Each vertically opposite sliding wheel 303 is locked on the frame of the assembly bracket 100. In this embodiment, the paving component 300 and the assembly bracket 100 can be connected by the vertically opposite sliding wheel 303, and the paving component 300 can also be moved along the length of the assembly bracket 100 by the rotation of the sliding wheel 303.

[0030] Refer to 5 and Figure 6As shown, this is a cross-sectional view of one side of the paving component in this embodiment. An annular sealing cover 304 is provided between the mounting bracket 301 and the gantry 305. The power end of the power component 306 is inserted into the interior of the annular sealing cover 304 and is detachably connected to the drive gear 310. The other side of the interior of the annular sealing cover 304 is rotatably connected to the transmission gear 311. The transmission gear 311 meshes with the drive gear 310. The drive gear 310 is connected to the rotating paving disc 307. In this embodiment, power is transmitted through the power component 306 and transmitted to the rotating paving disc 307 through the meshing between the drive gear 310 and the transmission gear 311, causing the rotating paving disc 307 to rotate, thereby grinding the gravel during the paving process.

[0031] Reference Figure 5 As shown, to prevent gravel from hitting the inner wall of the gantry 305 during the rotation of the rotary paver 307 and getting stuck in the gap between the rotary paver 307 and the gantry 305, the following implementation method can be adopted: a material gathering wheel 309 is provided at the angle between the vertical sides of the rotary paver 307 and the gantry 305. The material gathering wheel 309 rotates in the opposite direction to the rotary paver 307. The material gathering wheel 309 is provided with an abutment part 315, which is close to the inclined bending extension part 308. In this embodiment, the reverse rotation of the material gathering wheel 309 can transport the gravel between the rotary paver 307 and the gantry 305 towards the center, thereby preventing the gravel from jamming the rotary paver 307. The abutment part 315 can also prevent the gravel from jamming the rotary paver 307.

[0032] Reference Figure 6 as well as Figure 7 As shown, a transmission column 312 is fixedly connected to the bottom of the transmission gear 311, and a cross-shaped transmission plate 313 is fixedly connected to the bottom of the transmission column 312. The cross-shaped transmission plate 313 is slidably connected to the connecting sleeve 314. A rotating ring 321 is rotatably connected to the upper end of the rotating paving disc 307. The top inner side of the gantry 305 is detachably connected to two opposing electric telescopic rods 320. The telescopic ends of the two electric telescopic rods 320 are connected to the upper end of the rotating ring 321. A universal ball is provided between the telescopic ends of the electric telescopic rods 320 and the rotating ring 321. In this embodiment, the rotating paving disc 307 can be raised or lowered by simultaneously extending or shortening the two electric telescopic rods 320, thereby adjusting according to the required thickness of the gravel. The paving assembly 300 can also be tilted by the different extension lengths of the two electric telescopic rods 320 in conjunction with the universal ball, thereby adjusting the thickness of the gravel.

[0033] Reference Figure 7As shown, this is a schematic diagram of the aggregate wheel structure in this embodiment. A sliding rod 317 is provided above the aggregate wheel 309. The sliding rod 317 has a built-in motor that drives the aggregate wheel 309 to rotate. A connecting rod 319 is fixedly connected to the upper end of the sliding rod 317. The connecting rod 319 is detachably connected to the top inner side of the gantry frame 305. In this embodiment, the motor drives the aggregate wheel 309 to rotate in the opposite direction to the rotating paving disc 307, which facilitates the conveying of gravel in the forward direction.

[0034] Reference Figure 7 As shown, in order to enable the aggregate wheel 309 to rise and fall according to the rising and falling of the rotary paver 307, the following implementation method can be adopted: a receiving tube 318 is provided between the sliding rod 317 and the connecting rod 319. The sliding rod 317 and the receiving tube 318 are slidably connected internally. The outer wall of the sliding rod 317 near the bottom is rotatably connected to a limiting part 316. The limiting part 316 is locked above the inclined bending extension 308. In this embodiment, the limiting part 316 can move with the rotary paver 307 when it moves up or down. Furthermore, the rotation of the limiting part 316 can reduce friction with the rotary paver 307, resulting in a longer service life.

[0035] like Figure 2 As shown, the moving component 400 includes a winding component 401, a traction rope 402, and a limiting wheel 403. The winding component 401 is installed near the center of the upper part of the mounting bracket 100. The two ends of the mounting bracket 100 are equipped with limiting wheels 403. The winding component 401 is provided with a traction rope 402. The two ends of the traction rope 402 pass through the two limiting wheels 403 and are connected to the two sides of the paving component 300. In this embodiment, the winding component 401 is rotated by rotating the winding component 401, thereby driving the paving component 300 to move along the length direction of the mounting bracket 100.

[0036] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention.

Claims

1. A rotary gravel paver, comprising an assembly frame (100), characterized in that, The mounting bracket (100) is provided with a paving component (300) that can move along the length of the mounting bracket (100). The paving component (300) includes a mounting bracket (301), a gantry (305), a rotary paving disc (307), and a power component (306). The bottom of the mounting bracket (301) is provided with a gantry (305), and the rotary paving disc (307) is provided inside the gantry (305). The upper end of the mounting bracket (301) is provided with a power component (306), which drives the rotary paving disc (307) to rotate.

2. The rotary gravel paver according to claim 1, characterized in that, The rotary paving disc (307) has rounded corners near the bottom of the outer edge, and an inclined curved extension (308) is fixedly connected to the outer edge near the top of the rotary paving disc (307).

3. The rotary gravel paver according to claim 1, characterized in that, An annular sealing cover (304) is provided between the mounting bracket (301) and the gantry (305). The power end of the power assembly (306) is inserted into the interior of the annular sealing cover (304) and is detachably connected to the drive gear (310). A transmission gear (311) is rotatably connected to the other side of the interior of the annular sealing cover (304). The transmission gear (311) meshes with the drive gear (310), and the drive gear (310) is connected to the rotating paving disc (307).

4. The rotary gravel paver according to claim 1, characterized in that, A material gathering wheel (309) is provided at the angle between the rotating paver (307) and the vertical sides of the gantry (305). The material gathering wheel (309) rotates in the opposite direction to the rotating paver (307). A bonding part (315) is provided on the material gathering wheel (309), and the bonding part (315) is close to the inclined bending extension part (308).

5. The rotary gravel paver according to claim 3, characterized in that, A transmission column (312) is fixedly connected to the bottom of the transmission gear (311), and a cross-shaped transmission plate (313) is fixedly connected to the bottom of the transmission column (312). The cross-shaped transmission plate (313) is slidably connected to the connecting sleeve (314). A rotating ring (321) is rotatably connected to the upper end of the rotating paving disc (307). A pair of electric telescopic rods (320) opposite each other are detachably connected to the top of the inner side of the gantry frame (305). The telescopic ends of the electric telescopic rods (320) on both sides are connected to the upper end of the rotating ring (321). A universal ball is provided between the telescopic ends of the electric telescopic rods (320) and the rotating ring (321).

6. The rotary gravel paver according to claim 4, characterized in that, A sliding rod (317) is provided above the material gathering wheel (309). The sliding rod (317) has a built-in motor that drives the material gathering wheel (309) to rotate. A connecting rod (319) is fixedly connected to the upper end of the sliding rod (317). The connecting rod (319) is detachably connected to the top inner side of the gantry frame (305).

7. The rotary gravel paver according to claim 6, characterized in that, A storage tube (318) is provided between the sliding rod (317) and the connecting rod (319). The sliding rod (317) and the storage tube (318) are slidably connected internally. The sliding rod (317) is rotatably connected to the outer wall near the bottom by a limiting part (316), which is locked above the inclined bending extension (308).

8. The rotary gravel paver according to claim 1, characterized in that, It also includes a moving component (400), which includes a winding component (401), a traction rope (402), and a limiting wheel (403). The winding component (401) is installed on the assembly bracket (100) near the center of the top. The assembly bracket (100) is equipped with limiting wheels (403) at both ends. The winding component (401) is provided with a traction rope (402). The two ends of the traction rope (402) pass through the limiting wheels (403) on both sides and are connected to both sides of the paving component (300).

9. The rotary gravel paver according to claim 1, characterized in that, It also includes an adjustment component (200), which includes a spiral frame (201), a connector (202), a support (203), and a telescopic cylinder (205). The two ends of the mounting bracket (100) are rotatably connected to the spiral frame (201). The two sides of each spiral frame (201) are slidably connected to the connector (202). The bottom of the two connectors (202) on the same side is fixedly connected to the support (203). The outer walls of both sides of the spiral frame (201) are rotatably connected to the telescopic cylinder (205). The telescopic end of the telescopic cylinder (205) is rotatably connected to the support (203). Rotating wheels (204) are provided on both sides of the bottom of the support (203). A drive component (206) is provided on the support (203). The drive component (206) drives the rotating wheels (204) to rotate.

10. The rotary gravel paver according to claim 8, characterized in that, A vertical connecting pipe (302) is fixedly connected to the upper dead corner of the mounting bracket (301). Each vertical connecting pipe (302) is rotatably connected to a sliding wheel (303) that is opposite to the upper and lower sides. Each sliding wheel (303) is locked on the frame of the mounting bracket (100).

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