Paving equipment for ultra-thin overlay of road surface

Abstract

The utility model relates to the technical field of pavement paving, in particular to paving equipment for an ultrathin pavement cover, which comprises a paver, an ironing plate is mounted on the rear side of the paver, fixing tables are mounted at two ends of the rear side of the ironing plate, a support hanger is fixedly mounted at the top of each fixing table, and the support hanger and the ironing plate are mounted and fixed. The outer side face, away from the ironing plate, of the fixing table is provided with a fixing base, the bottom of the fixing base is provided with a first connecting shaft, the outer side, away from the fixing table, of the fixing base is provided with a static pressure steel wheel, and the static pressure steel wheel is fixedly installed at the outer end of the first connecting shaft. The output end of the motor is connected with the first connecting shaft at the corresponding position through a transmission belt. According to the utility model, the static pressure steel wheels are arranged at the two ends of the screed plate of the paver, so that asphalt between the end part of the screed plate and the curb can be flattened, and the situation that the position is loose, soft and segregated due to lack of reliable compaction is reduced.

Description

Technical Field

[0001] This utility model relates to the field of road paving technology, specifically to a paving device for ultra-thin road overlays. Background Technology

[0002] A paver is a construction device mainly used for paving various materials for the base and surface layers of highways, including asphalt pavers and concrete pavers. Ultra-thin overlays are a technology that protects and restores road surface function by laying a thin layer of asphalt. Because of their thinness, ultra-thin overlays reduce resource consumption, save energy and carbon emissions, alleviate pressure on the supply of engineering materials, and conserve aggregate and asphalt consumption.

[0003] Currently, when pavers are laying ultra-thin overlays, the end of the paver's screed needs to maintain a few centimeters of distance from the sides of the road and the curb stones to avoid the screed from colliding with the curb stones. However, when the roller is compacting, it is difficult for the roller to fully fit the curb stones and flatten them, resulting in a lack of reliable flattening and compaction of the asphalt at the edges, making the asphalt soft and prone to segregation. Utility Model Content

[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0005] A paving device for ultra-thin road surface overlay includes a paver, a screed mounted on the rear side of the paver, fixed platforms mounted at both ends of the rear side of the screed, supports fixedly mounted on the top of the fixed platforms, the supports fixedly mounted to the screed, a fixed seat mounted on the outer side of the fixed platform away from the screed, a connecting shaft mounted on the bottom of the fixed seat, a static pressure steel wheel mounted on the outer side of the fixed seat away from the fixed platform, the static pressure steel wheel fixedly mounted to the outer end of the connecting shaft, a motor mounted on the bottom of the fixed platform directly opposite the connecting shaft, the output end of the motor connected to the connecting shaft at the corresponding position via a transmission belt.

[0006] Furthermore, a second connecting shaft parallel to the first connecting shaft is installed at the bottom of the fixed base. A vibrating steel wheel is installed on the outside of the fixed base, and two limiting rings are fixedly installed on the second connecting shaft on the outside of the fixed base. The vibrating steel wheel is sleeved on the second connecting shaft between the two limiting rings. Multiple eccentric blocks are fixedly installed on the second connecting shaft inside the vibrating steel wheel. A motor is also installed at the bottom of the fixed platform directly opposite the second connecting shaft. The static pressure steel wheel applies static pressure to the asphalt through its own weight and installation height, while the vibrating steel wheel compacts the asphalt through centrifugal vibration. When used together, the compaction effect of the asphalt is better.

[0007] Furthermore, a support rod is fixedly installed at the middle position of the fixed base. A hole is opened on the fixed platform corresponding to the position of the support rod, and one end of the support rod passes through the hole. A spring is fitted on the support rod between the fixed base and the fixed platform. This allows the entire fixed base and the connected hydrostatic steel wheel and vibrating steel wheel to adaptively adjust their extension length. Since the extension length is adjustable, the connection position between the transmission belt and the two connecting shafts needs to be changed. The transmission belt is limited to a synchronous toothed belt, and a toothed pulley is used at the output end. The connecting shaft one and connecting shaft two have synchronous toothed grooves. When extending or retracting by a small amount, the flexibility of the transmission belt itself can meet the small extension or retraction without moving. When extending or retracting by a larger amount, the spring's thrust is relied upon. Therefore, the spring strength must be able to counteract the friction between the transmission belt and connecting shaft one and connecting shaft two, and also push the movement.

[0008] Furthermore, a hole is made in the fixed seat above the support rod, and a limit screw is threaded into the hole. A tightening nut is threaded onto the limit screw on both sides of the fixed seat. The limit screw restricts the contact between the static pressure steel wheel and the vibrating steel wheel and the curb surface, preventing the static pressure steel wheel and the vibrating steel wheel from rotating and pressing against the curb, thus affecting their rotation.

[0009] Furthermore, the end of the limiting screw on the outer side of the fixed seat is pre-set with a ball groove, in which a steel ball is installed, with part of the steel ball extending out of the ball groove. The steel ball contacts the surface of the curbstone, which can reduce frictional resistance and facilitate movement with the paver.

[0010] Furthermore, a base plate is installed at the bottom of connecting shaft one and connecting shaft two inside the fixed base, and the base plate is fixed to the fixed platform at the corresponding position. The transmission positions of the two connecting shafts and the transmission belt are protected to prevent asphalt from entering.

[0011] Furthermore, a slider is fixedly installed on the ironing board at the position corresponding to the support bracket. Shaft seats are fixedly installed on the ironing board at both ends of the slider, and adjusting screws are installed on the shaft seats at both ends. Holes are opened on the slider corresponding to the positions of the adjusting screws. The adjusting screws pass through the holes and are threadedly connected to the slider. A throttle handle is fixedly installed at one end of the adjusting screw. The extension or retraction of the hydrostatic steel wheel and the vibrating steel wheel can be further controlled by the cooperation of the adjusting screw and the slider.

[0012] Furthermore, a base is fixedly installed on the ironing plate below the slider. A sliding groove is pre-set on the top of the base, and the slider is located within the sliding groove. Limiting strips are fixedly installed on both the front and rear inner walls of the sliding groove. An opening on the slider corresponds to the position of the limiting strip, and the limiting strip extends into the opening to form a limiting sliding support with the slider. The base and limiting strip design limit the slider within the base, and the connection and fixation with the adjusting screw ensure the reliable fixation of the support bracket and the entire fixed platform.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. This utility model provides a static pressure steel wheel at both ends of the screed of the paver. When the paver is paving, the wheel can rotate synchronously to flatten the asphalt between the end of the screed and the curb, thereby reducing the occurrence of loose segregation in this area due to lack of reliable compaction.

[0015] 2. This utility model further adds a vibrating steel wheel, which uses the centrifugal vibration generated by the rotation of the centrifugal block to further vibrate and compact the asphalt after static pressure by the static pressure steel wheel, thereby improving the asphalt flattening and compaction effect.

[0016] 3. This utility model, through the cooperation of spring and limiting screw, allows the extension length of the static pressure steel wheel and the vibrating steel wheel relative to the end of the screed to be adaptively adjusted according to the contact between the limiting screw and the curb surface, without the need for manual adjustment, thus facilitating use.

[0017] 4. In this utility model, the use of adjusting screw and fixed base in combination with slider allows for a larger range of length adjustment on the premise that the extension length of the static pressure steel wheel and the vibrating steel wheel can be adjusted slightly by the spring and the limiting screw. The combination of the two facilitates use in different situations. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a cross-sectional view of the vibrating steel wheel in this utility model;

[0020] Figure 3 This is a schematic diagram of the installation of the steel ball in this utility model;

[0021] Figure 4 This is a schematic diagram of the installation of the adjusting screw in this utility model;

[0022] Figure 5 This is a schematic diagram of the installation of the slider in this utility model;

[0023] Figure 6 This is an installation diagram of this utility model;

[0024] Figure 7 This is an enlarged view of point A in this utility model.

[0025] Reference numerals in the attached diagram: 1. Paver; 2. Screed; 3. Support frame; 4. Fixed platform; 5. Static steel wheel; 6. Vibrating steel wheel; 7. Connecting shaft one; 8. Connecting shaft two; 9. Motor; 10. Drive belt; 11. Eccentric block; 12. Limiting ring; 13. Fixed seat; 14. Support rod; 15. Spring; 16. Limiting screw; 17. Tightening nut; 18. Steel ball; 19. Ball groove; 20. Bottom support plate; 21. Slider; 22. Adjusting screw; 23. Shaft seat; 24. Throttle; 25. Base; 26. Limiting strip; 27. Sliding groove. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0027] This application provides a paving device for ultra-thin road surface overlays, mainly addressing the problem that existing pavers require a gap between the screed and the curb, and that the asphalt within this gap is difficult to compact effectively by a road roller. The application provides the following technical solution, which will be discussed in conjunction with... Figure 1 - Figure 7 Please provide a detailed explanation:

[0028] A paving device for ultra-thin road surface overlay includes a paver 1, a screed 2 installed on the rear side of the paver 1, fixed platforms 4 installed at both ends of the rear side of the screed 2, a support bracket 3 fixedly installed on the top of the fixed platform 4, the support bracket 3 being fixedly installed with the screed 2, a fixed seat 13 installed on the outer side of the fixed platform 4 away from the screed 2, and two parallel connecting shafts 7 and 8 installed at the bottom of the fixed seat 13;

[0029] A static pressure steel wheel 5 and a vibrating steel wheel 6 are installed on the outer side of the fixed base 13 away from the fixed platform 4. Both the static pressure steel wheel 5 and the vibrating steel wheel 6 extend out of the two ends of the ironing plate 2 at the corresponding positions. The static pressure steel wheel 5 is fixedly installed on the outer end of the connecting shaft 7. Two limiting rings 12 are fixedly installed on the connecting shaft 8 on the outer side of the fixed base 13. The vibrating steel wheel 6 is sleeved on the connecting shaft 8 between the two limiting rings 12. Multiple eccentric blocks 11 are fixedly installed on the connecting shaft 8 on the inner side of the vibrating steel wheel 6.

[0030] Motors 9 are installed at the bottom of the fixed platform 4, directly opposite the positions of connecting shaft 7 and connecting shaft 8. The output end of the motor 9 is connected to the corresponding positions of connecting shaft 7 and connecting shaft 8 via a transmission belt 10.

[0031] When in use, the static steel wheel 5 and the vibrating steel wheel 6 are pressed against the curb. When the paver 1 is paving, the screed 2 will leave some asphalt in the gap between the screed 2 and the curb. Since this gap is not within the screed 2's screeding range, it cannot be screed by the screed 2.

[0032] At this time, the motor 9 is turned on, and the transmission belt 10 drives the static pressure steel wheel 5 and the vibrating steel wheel 6 to rotate through the transmission effect of the connecting shaft 7 and the connecting shaft 8 respectively. The static pressure steel wheel 5 presses against the asphalt surface at the interval position and flattens it with static pressure. As the paver 1 moves forward, the vibrating steel wheel 6 moves to the flattening position of the static pressure steel wheel 5. Due to the setting of the eccentric block 11 inside the vibrating steel wheel 6, centrifugal vibration will be generated when the connecting shaft 8 rotates, which will drive the vibrating steel wheel 6 to vibrate, thereby further compacting the flattened asphalt. The static pressure steel wheel 5 can also be driven by the motor 9 without active drive, but relies on the contact friction with the paved asphalt to roll and perform static pressure under the drive of the paver 1. When the road roller flattens the ultra-thin overlay later, even if the roller cannot get close to the curb, the asphalt at the interval position has been compacted by the static pressure steel wheel 5 and the vibrating steel wheel 6, and it is not easy for it to become soft and segregated.

[0033] In some embodiments, a support rod 14 is fixedly installed at the middle position of the fixed base 13, and a hole is opened on the fixed platform 4 corresponding to the position of the support rod 14. One end of the support rod 14 passes through the hole, and a spring 15 is sleeved on the support rod 14 between the fixed base 13 and the fixed platform 4.

[0034] The cooperation between the spring 15 and the support rod 14 allows the horizontal installation position of the fixing seat 13 to be adjusted, so that it can be adaptively adjusted according to the distance between the screed 2 and the curbstone. The setting of the spring 15 allows the position of the fixing seat 13 to be adaptively adjusted, so that the static pressure steel wheel 5 and the vibrating steel wheel 6 can abut against the surface of the curbstone without the need for manual real-time adjustment.

[0035] In some embodiments, a hole is opened on the fixing seat 13 above the support rod 14, and a limit screw 16 is threaded into the hole. A tightening nut 17 is threaded onto the limit screw 16 on both sides of the fixing seat 13.

[0036] The limiting screw 16 can extend and abut against the surface of the curbstone to limit the contact between the static pressure steel wheel 5 and the vibrating steel wheel 6 and the curbstone surface. When the static pressure steel wheel 5 and the vibrating steel wheel 6 rotate and come into direct contact with the curbstone surface, they may scratch the curbstone surface or affect their rotation due to contact resistance. The limiting screw 16 can separate the static pressure steel wheel 5 and the vibrating steel wheel 6 from the contact with the curbstone, leaving a gap of several millimeters to avoid affecting the rotation of the static pressure steel wheel 5 and the vibrating steel wheel 6.

[0037] In some embodiments, the end of the limiting screw 16 on the outer side of the fixing seat 13 is provided with a ball groove 19, and a steel ball 18 is installed in the ball groove 19, with the steel ball 18 partially extending out of the ball groove 19.

[0038] When the end of the limiting screw 16 reaches the curbstone, the steel ball 18 contacts the surface of the curbstone. The setting of the ball groove 19 allows the steel ball 18 to roll against the surface of the curbstone when the paver 1 moves forward, reducing frictional resistance.

[0039] In some embodiments, a base plate 20 is installed at the bottom of the connecting shaft 7 and the connecting shaft 8 inside the fixing base 13, and the base plate 20 is fixed to the fixing platform 4 at the corresponding position.

[0040] The base plate 20 separates the two connecting shafts and the transmission belt 10 from the asphalt surface, preventing asphalt from adhering to the surface of the connecting shafts and the transmission belt 10 and affecting rotation.

[0041] In some embodiments, a base 25 is fixedly installed on the ironing board 2 at the position corresponding to the support bracket 3. A sliding groove 27 is pre-set on the top of the base 25. A slider 21 is placed in the sliding groove 27. Limiting strips 26 are fixedly installed on the inner walls of the front and rear sides of the sliding groove 27. An opening is made on the slider 21 at the position corresponding to the limiting strip 26. The limiting strip 26 extends into the opening to form a limiting sliding support with the slider 21.

[0042] A bearing seat 23 is fixedly installed on the ironing plate 2 at both ends of the base 25. An adjusting screw 22 is installed on the bearing seat 23 at both ends. A hole is opened on the slider 21 corresponding to the position of the adjusting screw 22. The adjusting screw 22 passes through the hole and is threadedly connected to the slider 21. A throttle 24 is fixedly installed on one end of the adjusting screw 22.

[0043] When adjusting the extension length of the static pressure steel wheel 5 and the vibrating steel wheel 6, the adjustment can be made by the spring 15 in conjunction with the limiting screw 16, or directly by adjusting the adjusting screw 22. By rotating the adjusting screw 22 from the throttle 24 position, and utilizing the threaded connection with the slider 21, combined with the sliding limit relationship between the slider 21 and the limiting strip 26, the support bracket 3 and the entire fixed platform 4 installed on the support bracket 3 can be moved. The adjustment range of the adjusting screw 22 is relatively large, while the adjustment range of the spring 15 and the limiting screw 16 is relatively small. The two are used together to facilitate use in different situations.

[0044] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A paving apparatus for paving a road surface with an ultra-thin overlay, comprising a paver (1) to which a screed (2) is mounted at the rear side, characterized in that, The back side of the ironing flat plate (2) is provided with a fixed table (4) at both ends, the top of the fixed table (4) is fixedly provided with a support hanger (3), the support hanger (3) is fixedly installed with the ironing flat plate (2), the outer side of the fixed table (4) away from the ironing flat plate (2) is provided with a fixed seat (13), the bottom of the fixed seat (13) is provided with a connecting shaft (7), the outer side of the fixed seat (13) away from the fixed table (4) is provided with a static pressure steel wheel (5), the static pressure steel wheel (5) is fixedly installed with the outer end of the connecting shaft (7), the bottom of the fixed table (4) is provided with a motor (9) at the position opposite to the connecting shaft (7), and the output end of the motor (9) is connected with the connecting shaft (7) at the corresponding position through a transmission belt (10).

2. A paving apparatus for paving an ultra-thin overlay on a road surface as claimed in claim 1, wherein The bottom of the fixed seat (13) is also provided with a connecting shaft (8) parallel to the connecting shaft (7), the outer side of the fixed seat (13) is provided with a vibrating steel wheel (6), the connecting shaft (8) of the outer side of the fixed seat (13) is fixedly provided with two limiting rings (12), the vibrating steel wheel (6) is sleeved on the connecting shaft (8) between the two limiting rings (12), the connecting shaft (8) of the inner side of the vibrating steel wheel (6) is fixedly provided with a plurality of eccentric blocks (11), and the bottom of the fixed table (4) is also provided with a motor (9) at the position opposite to the connecting shaft (8).

3. A paving apparatus for paving an ultra-thin overlay on a road surface as claimed in claim 2, wherein, The middle position of the fixed seat (13) is fixedly provided with a supporting rod (14), the fixed table (4) is provided with a hole at the position corresponding to the supporting rod (14), one end of the supporting rod (14) penetrates through the hole, and the supporting rod (14) between the fixed seat (13) and the fixed table (4) is sleeved with a spring (15).

4. A paving apparatus for paving an ultra-thin overlay on a road surface as claimed in claim 3 wherein, The fixed seat (13) above the supporting rod (14) is provided with a hole, a limiting screw (16) is screwed in the hole, and a tension nut (17) is screwed on the limiting screw (16) on the two sides of the fixed seat (13).

5. A paving apparatus for paving an ultra-thin overlay on a road surface as claimed in claim 4 wherein, The end of the limiting screw (16) on the outer side of the fixed seat (13) is provided with a ball groove (19), a steel ball (18) is installed in the ball groove (19), and part of the steel ball (18) extends out of the ball groove (19).

6. A paving apparatus for paving an ultra-thin overlay on a road surface as defined in claim 2, wherein The bottom of the connecting shaft (7) and the connecting shaft (8) on the inner side of the fixed seat (13) is provided with a bottom supporting plate (20), and the bottom supporting plate (20) is fixed with the fixed table (4) at the corresponding position.

7. A paving apparatus for paving an ultra-thin overlay on a road surface as defined in claim 4, wherein The ironing flat plate (2) is fixedly provided with a sliding block (21) at the position corresponding to the support hanger (3), the ironing flat plate (2) at both ends of the sliding block (21) is fixedly provided with an axle seat (23), the axle seat (23) at both ends is provided with an adjusting screw (22), the sliding block (21) is provided with a hole at the position corresponding to the adjusting screw (22), the adjusting screw (22) penetrates through the hole and is screwed with the sliding block (21), and one end of the adjusting screw (22) is fixedly provided with a handle (24).

8. A paving apparatus for paving an ultra-thin overlay on a road surface as claimed in claim 7 wherein, The ironing flat plate (2) below the sliding block (21) is fixedly provided with a base (25), the top of the base (25) is provided with a sliding groove (27), the sliding block (21) is located in the sliding groove (27), the front and rear two inner walls of the sliding groove (27) are fixedly provided with a limiting strip (26), and the sliding block (21) is provided with an opening corresponding to the position of the limiting strip (26), and the limiting strip (26) extends into the opening to form a limiting sliding support with the sliding block (21).

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