Municipal pavement base course laying device
By designing a three-stage screening and adjustment component for the municipal road base paving device, the problem of existing equipment being unable to achieve multi-layer composite structure paving was solved, realizing uniform distribution of crushed stone and equipment stability, and improving construction efficiency and material utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZICHENG UNITED CONSTR GRP CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-04-21
AI Technical Summary
Existing road base paving equipment has limited functionality and cannot achieve one-time paving of multi-layer composite structures. The lack of effective screening devices leads to uneven particle size distribution, and the equipment has poor stability during vibration, which easily results in material waste.
A municipal road base paving device was designed, which includes a three-stage screening component and an adjustment component. It can screen crushed stone into different particle sizes and adjust the feeding amount. The screening component divides the crushed stone into three types: fine, medium and coarse. The vibration is buffered by a vibration motor and an elastic structure to achieve the paving of a multi-layer composite structure.
It enables efficient laying of multi-layer composite structures, improves construction efficiency, ensures equipment stability and uniform material distribution, and reduces material waste.
Smart Images
Figure CN224148483U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of municipal road paving technology, specifically a municipal road base paving device. Background Technology
[0002] Existing road base paving equipment has limited functionality, capable of laying only single-size aggregates and unable to achieve multi-layer composite structures in a single application. Construction requires multiple stages of laying aggregates of different sizes, a cumbersome and inefficient process. Furthermore, traditional equipment lacks effective screening devices, making on-site grading of the aggregates impossible, resulting in uneven particle size distribution in the paving material. Additionally, existing equipment cannot adjust the amount of aggregate added, easily leading to material waste. Moreover, vibrations generated by the screening device during operation can be transmitted to the equipment support, affecting stability and lifespan; these issues have been extensively researched. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a municipal road base paving device that can solve the problems in the prior art.
[0004] This utility model is achieved through the following technical solution: A municipal road base paving device of this utility model includes a vehicle body, wherein a first storage chamber, a second storage chamber, and a third storage chamber are provided inside the vehicle body. The device is characterized in that a screening component is provided on the top of the vehicle body for three-stage screening of crushed stone. The screening component screens the crushed stone and then guides it into the first, second, and third storage chambers respectively. A material discharge chute is provided at the bottom of the first, second, and third storage chambers. A baffle assembly is provided at the bottom of the vehicle body to shield the material discharge chute. An adjustment component is provided on one side of the vehicle body to allow the baffle assembly to slide left and right.
[0005] A further technical solution includes a baffle assembly, with multiple guide rods fixedly disposed on the right side of the baffle, and multiple sliding seats disposed on the bottom of the vehicle body, through which the guide rods slide.
[0006] In a further technical solution, a shell plate is fixedly installed on the right side of the baffle.
[0007] A further technical solution includes an adjustment component comprising a fixed rod fixedly disposed on the front side of the baffle, a connecting rod fixedly disposed in the fixed rod, an internal threaded block fixedly disposed on the front side of the baffle, and a threaded rod adjustment structure that is threadedly connected to the internal threaded block on the front side of the vehicle body.
[0008] A further technical solution is that the threaded rod adjustment structure includes two fixed brackets fixedly installed on the front and rear sides of the vehicle body, and a threaded shaft is rotatably installed between the fixed brackets. The threaded shaft is threadedly connected to the internal threaded block.
[0009] In a further technical solution, a shell is fixedly provided on the outer surface of the fixing frame.
[0010] A further technical solution includes a screening assembly comprising multiple supports fixedly mounted on the front side of the top of the vehicle body, an upper screening box disposed between the supports, a lower screening box disposed below the upper screening box, an inclined plate disposed between the upper screening box and the lower screening box, and multiple vibration motors fixedly mounted on the outer surfaces of the inclined plate, the upper screening box and the lower screening box, and the inclined plate, the upper screening box and the lower screening box being elastically connected to the supports through an elastic structure.
[0011] In a further technical solution, a first baffle is provided on the top of the upper screening box, and a second baffle is provided on the top of the lower screening box.
[0012] In a further technical solution, a fine screen is provided in the upper screening box, and a coarse screen is provided in the lower screening box.
[0013] A further technical solution includes an elastic structure comprising multiple bases fixedly disposed on one side of the support, a spring elastically connected to the top of each base, a top side plate fixedly disposed on the top of each spring, and multiple ear plates fixedly disposed on the front and rear sides of the upper screening box, the lower screening box, and the inclined plate, the ear plates being fixedly connected to the top side plate.
[0014] The beneficial effects of this utility model are as follows: First, the device feeds crushed stone into the upper screening box, and the upper screening box, lower screening box and inclined plate vibrate and screen the crushed stone, and loads fine crushed stone into the third storage chamber, coarse crushed stone into the second storage chamber, and medium-sized crushed stone into the first storage chamber. After the vehicle moves to the right, it can be laid on the road base to form a composite layer structure of fine crushed stone in the lower layer, coarse crushed stone in the middle layer and medium-sized crushed stone in the upper layer.
[0015] Second, by adjusting the components and baffle components, it is convenient for personnel to adjust the opening of the material chute, thereby changing the amount of crushed stone fed.
[0016] Third, the upper screening box, inclined plate and lower screening box are equipped with vibration motors, which can vibrate the upper screening box, inclined plate and lower screening box to generate screening function. Through the elastic structure, the vibration of the upper screening box, inclined plate and lower screening box and the support are buffered to avoid the support being affected by large vibration. Attached Figure Description
[0017] For ease of explanation, the present invention will be described in detail below with reference to specific embodiments and accompanying drawings.
[0018] Figure 1 This is a schematic diagram of the overall structure of a municipal road base paving device according to the present invention;
[0019] Figure 2 for Figure 1 A schematic diagram at point A in the middle;
[0020] Figure 3 for Figure 1 A schematic diagram of the structure of the device from below;
[0021] Figure 4 for Figure 1 A schematic diagram of the structure of the device after removing shell plate 26, viewed from below.
[0022] Figure 5 for Figure 1 A cross-sectional view of the device in the middle;
[0023] In the figure, the components are: inclined plate 12, upper screening box 13, first baffle 14, vibrating motor 15, second baffle 16, bracket 17, lower screening box 18, first storage chamber 19, vehicle body 21, wheel 22, fixing rod 23, connecting rod 24, baffle 25, shell plate 26, outer shell 27, handwheel 28, second storage chamber 31, third storage chamber 32, trailer hook 33, base 41, spring 43, top side plate 44, ear plate 46, threaded shaft 51, internal threaded block 52, fixing frame 53, guide rod 54, slide seat 55, and discharge chute 61. Detailed Implementation
[0024] like Figures 1-5 As shown, this utility model will be described in detail. For ease of description, the directions mentioned below are defined as follows: the directions of up, down, left, right, front, and back mentioned below are the same as... Figure 1 The projection relationship of this utility model is consistent in the vertical, horizontal, front and back directions. It is a municipal road base paving device, including a vehicle body 21. The vehicle body 21 is provided with a first storage chamber 19, a second storage chamber 31 and a third storage chamber 32. The top of the vehicle body 21 is provided with a screening component for three-stage screening of crushed stone. The screening component screens the crushed stone and then introduces it into the first storage chamber 19, the second storage chamber 31 and the third storage chamber 32 respectively. The bottom of the first storage chamber 19, the second storage chamber 31 and the third storage chamber 32 is funnel-shaped. The bottom of the first storage chamber 19, the second storage chamber 31 and the third storage chamber 32 is provided with a material drop chute 61. The bottom of the vehicle body 21 is provided with a baffle assembly to block the material drop chute 61. An adjustment component is provided on one side of the vehicle body 21 to allow the baffle assembly to slide left and right.
[0025] Advantageously, a tow hook 33 is provided on the right side of the vehicle body 21, which is used to tow vehicles in the external space to provide power to the device.
[0026] Advantageously, the vehicle body 21 is provided with multiple wheels 22 that rotate around its perimeter.
[0027] Advantageously, the baffle assembly includes a baffle 25, a plurality of guide rods 54 are fixedly disposed on the right side of the baffle 25, and a plurality of slides 55 are disposed at the bottom of the vehicle body 21, with the guide rods 54 sliding through the slides 55.
[0028] Advantageously, a shell plate 26 is fixedly installed on the right side of the baffle 25. The shell plate 26 has a box-like structure, which covers the guide rod 54 and the slide 55. Since the guide rod 54 is fixedly installed inside the shell plate 26, and a gap can be provided between the shell plate 26 and the slide 55, the baffle 25 and the slide 55 will not interfere with each other after the guide rod 54 and the baffle 25 move. The baffle 25 can cover the guide rod 54 and the slide 55. After the baffle 25 moves, the discharge chute 61 is exposed. The discharge chute 61 throws the crushed stone downwards, and the generated dust will not enter the guide rod 54 and the slide 55 in large quantities.
[0029] Advantageously, the adjustment assembly includes a fixed rod 23 fixedly disposed on the front side of the baffle 25, a connecting rod 24 fixedly disposed in the fixed rod 23, an internal thread block 52 fixedly disposed on the front side of the baffle 25, and a threaded rod adjustment structure that is threadedly connected to the internal thread block 52 on the front side of the vehicle body 21.
[0030] Advantageously, the threaded rod adjustment structure includes two fixed brackets 53 fixedly installed on the front and rear sides of the vehicle body 21, and a threaded shaft 51 is rotatably installed between the fixed brackets 53. The threaded shaft 51 is threadedly connected to the internal threaded block 52.
[0031] Advantageously, the outer surface of the fixing frame 53 is fixedly provided with a housing 27, and the connecting rod 24 slides through the housing 27.
[0032] Advantageously, a handwheel 28 is fixedly provided on the right side of the threaded shaft 51.
[0033] Advantageously, the screening assembly includes multiple supports 17 fixedly installed on the front top of the vehicle body 21. An upper screening box 13 inclined to the upper right is arranged between the supports 17. A lower screening box 18 inclined to the upper left is arranged below the upper screening box 13. An inclined plate 12 inclined to the upper left is arranged between the upper screening box 13 and the lower screening box 18. Multiple vibration motors 15 are fixedly installed on the outer surfaces of the inclined plate 12, the upper screening box 13 and the lower screening box 18. The inclined plate 12, the upper screening box 13 and the lower screening box 18 are elastically connected to the supports 17 through an elastic structure.
[0034] Advantageously, the upper screening box 13 is provided with a first baffle 14 at the top, and the lower screening box 18 is provided with a second baffle 16 at the top, the first baffle 14 and the second baffle 16 are used to block the material.
[0035] Advantageously, the upper screening box 13 is equipped with a fine screen, and the lower screening box 18 is equipped with a coarse screen. After the fine crushed stone is screened by the upper screening box 13, it is guided into the third storage chamber 32 through the inclined plate 12. The crushed stone screened by the fine screen is limited by the second baffle 16 and falls into the coarse screen in the lower screening box 18. The crushed stone smaller than the coarse screen is screened into the first storage chamber 19, and the crushed stone larger than the coarse screen falls into the second storage chamber 31. Thus, the third storage chamber 32 is loaded with fine crushed stone, the second storage chamber 31 is loaded with coarse crushed stone, and the first storage chamber 19 is loaded with medium-sized crushed stone.
[0036] Advantageously, the elastic structure includes multiple bases 41 fixedly disposed on one side of the support 17. A spring 43 is elastically connected to the top of the base 41. A top side plate 44 is fixedly disposed on the top of the spring 43. Multiple ear plates 46 are fixedly disposed on the front and rear sides of the upper screening box 13, the lower screening box 18 and the inclined plate 12. The ear plates 46 are fixedly connected to the top side plate 44. Through the elastic structure, the vibration of the upper screening box 13, the inclined plate 12 and the lower screening box 18 is buffered from the support 17, so as to avoid the support 17 being affected by large vibrations.
[0037] The device feeds crushed stone into a screening component, which vibrates and screens the crushed stone. The third storage chamber 32 is filled with fine crushed stone, the second storage chamber 31 is filled with coarse crushed stone, and the first storage chamber 19 is filled with medium-sized crushed stone. When the device feeds crushed stone, the baffle 25 is moved by the adjusting component, so that the discharge chute 61 is connected to the external space, and the fine crushed stone in the third storage chamber 32, the coarse crushed stone in the second storage chamber 31, and the medium-sized crushed stone in the first storage chamber 19 are simultaneously fed downwards.
[0038] After the device is connected to a vehicle in the external space via the trailer hook 33, the vehicle moves the device to the right, which forms a three-layered pile of gravel on the ground. Since the fine gravel is placed first, then the coarse gravel, and then the medium gravel, the bottom layer is fine gravel, the middle layer is coarse gravel, and the top layer is medium gravel.
[0039] Once the vibration motor 15 is in operation, it can drive the upper screening box 13, the inclined plate 12 and the lower screening box 18 to vibrate.
[0040] When adjusting the opening of the material discharge chute 61, the threaded shaft 51 is rotated by turning the handwheel 28. Since the threaded shaft 51 is threadedly connected to the internal threaded block 52, the internal threaded block 52, the connecting rod 24, the fixing rod 23, the baffle 25 and the guide rod 54 form an integrated structure. The guide rod 54 is slidably connected to the slide block 55. This allows the threaded shaft 51 to drive the internal threaded block 52, the connecting rod 24, the fixing rod 23, the baffle 25 and the guide rod 54 to move telescopically relative to the slide block 55. After the baffle 25 moves, the material discharge chute 61 can be partially or fully exposed to achieve the material discharge opening.
[0041] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without creative effort should be included within the protection scope of this utility model; therefore, the protection scope of this utility model should be determined by the scope defined in the claims.
Claims
1. A municipal pavement base laying device, comprising a vehicle body (21), a first storage cavity (19), a second storage cavity (31) and a third storage cavity (32) are arranged in the vehicle body (21), characterized in that, The top of the vehicle body (21) is provided with a screening component for three-stage screening of crushed stone. After screening, the crushed stone is introduced into the first storage chamber (19), the second storage chamber (31) and the third storage chamber (32) respectively. The bottom of the first storage chamber (19), the second storage chamber (31) and the third storage chamber (32) are provided with a material drop chute (61). The bottom of the vehicle body (21) is provided with a baffle assembly to block the material drop chute (61). An adjustment component is provided on one side of the vehicle body (21) to allow the baffle assembly to slide left and right.
2. A municipal road base laying device as claimed in claim 1, wherein: The baffle assembly includes a baffle (25), a plurality of guide rods (54) are fixedly provided on the right side of the baffle (25), and a plurality of slides (55) are provided at the bottom of the vehicle body (21), and the guide rods (54) slide through the slides (55).
3. A municipal road base laying device as claimed in claim 2, wherein: A shell plate (26) is fixedly installed on the right side of the baffle (25).
4. The municipal road base laying device according to claim 1, wherein: The adjustment assembly includes a fixed rod (23) fixedly disposed on the front side of the baffle (25), a connecting rod (24) fixedly disposed in the fixed rod (23), an internal thread block (52) fixedly disposed on the front side of the baffle (25), and a threaded rod adjustment structure that is threadedly connected to the internal thread block (52) on the front side of the vehicle body (21).
5. A municipal road base laying apparatus as claimed in claim 4, wherein: The threaded rod adjustment structure includes two fixed brackets (53) fixedly installed on the front and rear sides of the vehicle body (21), and a threaded shaft (51) is rotatably installed between the fixed brackets (53). The threaded shaft (51) is threadedly connected to the internal threaded block (52).
6. A municipal road base laying device as claimed in claim 5, wherein: The outer surface of the fixing frame (53) is fixedly provided with a shell (27).
7. A municipal road base laying apparatus as claimed in any one of claims 1 to 6, wherein: The screening assembly includes multiple brackets (17) fixedly installed on the front top of the vehicle body (21). An upper screening box (13) is arranged between the brackets (17). A lower screening box (18) is arranged below the upper screening box (13). An inclined plate (12) is arranged between the upper screening box (13) and the lower screening box (18). Multiple vibration motors (15) are fixedly installed on the outer surfaces of the inclined plate (12), the upper screening box (13), and the lower screening box (18). The inclined plate (12), the upper screening box (13), and the lower screening box (18) are elastically connected to the brackets (17) through an elastic structure.
8. A municipal road base laying apparatus as claimed in claim 7, wherein: The upper screening box (13) is provided with a first baffle (14) on top, and the lower screening box (18) is provided with a second baffle (16) on top.
9. A municipal road base laying apparatus as claimed in claim 7, wherein: The upper sieve box (13) is equipped with a fine sieve, and the lower sieve box (18) is equipped with a coarse sieve.
10. A municipal road base laying apparatus as claimed in claim 7, wherein: The elastic structure includes multiple bases (41) fixedly disposed on one side of the support (17). A spring (43) is elastically connected to the top of the base (41). A top side plate (44) is fixedly disposed on the top of the spring (43). Multiple ear plates (46) are fixedly disposed on the front and rear sides of the upper screening box (13), the lower screening box (18) and the inclined plate (12). The ear plates (46) are fixedly connected to the top side plate (44).