A road construction system

Abstract

The application is suitable for the technical field of road construction, and provides a road construction system, which comprises a road roller and a road roller device fixedly installed at the front end of the road roller; the road roller device comprises two groups of fixed plates arranged in parallel; V-shaped plates are symmetrically fixed between the two fixed plates; a rolling roller is rotatably arranged between the two V-shaped plates; arc-shaped support plates are fixed between the two fixed plates; sliding seats are symmetrically fixed and slidingly arranged on the circumferential side of the arc-shaped support plates; arc-shaped counterweight plates are slidingly arranged between adjacent two arc-shaped baffle plates; a plurality of arc-shaped accommodation grooves matched with the corresponding arc-shaped counterweight plates are uniformly fixed in the rolling roller; conveying parts matched with the end portions of the arc-shaped counterweight plates are slidingly arranged in the arc-shaped grooves; the device realizes the transfer of the arc-shaped counterweight plates through the conveying parts, facilitates the safe and rapid conveying of the arc-shaped counterweight plates into the rolling roller, realizes the adjustment of the rolling pressure of the rolling roller of the road roller, and improves the work efficiency while reducing the safety hazards.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of road construction, more specifically, it relates to a road construction system. BACKGROUND

[0002] The road roller belongs to the category of road equipment in engineering machinery, and is widely used for filling and compaction work of large engineering projects such as high-grade highways, railways, airport runways, dams, and stadiums. It can roll and compact sandy, semi-sticky, and sticky soil, roadbed stabilized soil, and asphalt concrete pavement layers.

[0003] According to the search, a road roller for municipal road construction and its working method (CN116103982B) includes a tray, an inclined rod, and a rolling roller. The inclined rod is fixedly connected to the bottom of the tray, and the rolling roller is rotatably connected to the bottom end of the inclined rod. The top of the tray is provided with a placing assembly. When the weight is not added, the counterweight roller is placed in the placing cavity and is limited by the limiting plate to avoid the counterweight roller from falling off. When the weight is added, the counterweight roller is installed in the rolling roller to increase the weight of the rolling roller. The operation is simple and convenient, and the rolling force of the road roller can be adjusted.

[0004] However, the above-mentioned road roller for municipal road construction needs to manually transfer the counterweight roller to the inside of the rolling roller. Since the counterweight roller is heavy, the transfer process is difficult, inefficient, and has certain safety hazards. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application aims to provide a road construction system. The conveying part is used to transfer the arc-shaped counterweight plate, which can safely and quickly convey the arc-shaped counterweight plate to the inside of the rolling roller, adjust the rolling force of the rolling roller of the road roller, improve the work efficiency, and reduce the safety hazards.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] A road construction system, comprising a road roller and a road rolling device fixedly installed at the front end of the road roller; the road rolling device comprises two groups of fixed plates arranged in parallel; V-shaped plates are symmetrically fixed between the two fixed plates; a rolling roller is rotatably arranged between the two V-shaped plates; an arc-shaped support plate is fixed between the two fixed plates; a sliding seat is symmetrically fixed on the circumferential side of the arc-shaped support plate; an arc-shaped groove is formed on the surface of the sliding seat; a plurality of arc-shaped baffles are uniformly fixed on the circumferential side of the arc-shaped groove; an arc-shaped counterweight plate is slidably arranged between adjacent two arc-shaped baffles; a plurality of arc-shaped receiving grooves corresponding to the arc-shaped counterweight plates are uniformly fixed in the rolling roller; a conveying part is slidably arranged in the arc-shaped groove and is connected with the end of each arc-shaped counterweight plate; and the arc-shaped counterweight plate is connected with the corresponding arc-shaped receiving groove.

[0008] The conveying part comprises an arc-shaped top plate; a plurality of arc-shaped sleeves are uniformly fixed on the inner circumferential side of the arc-shaped top plate; the arc-shaped sleeves are slidably arranged between adjacent two arc-shaped baffles; a slide rail is fixed on the side surface of the arc-shaped sleeve; an arc-shaped sliding groove is formed on the side surface of the arc-shaped baffle and slidably connected with the slide rail; an extension plate is fixed on the end of the arc-shaped top plate; a driving motor is symmetrically fixed on the surface of the extension plate; a bevel gear is fixed on the output end of the driving motor; and a bevel gear plate is symmetrically fixed on the opposite side surfaces of the sliding seat and engaged with the corresponding bevel gear.

[0009] The arc-shaped counterweight plate is fixed with an arc-shaped insertion plate arranged at the same center; the arc-shaped insertion plate is slidably connected with the corresponding arc-shaped sleeve; a guide groove is formed in the arc-shaped insertion plate; an insertion rod is slidably arranged in the guide groove; a return spring is fixedly connected between the insertion rod and the guide groove; and a plug hole is formed in the inner wall of the arc-shaped sleeve and connected with the insertion rod.

[0010] A plurality of threaded pipes are fixedly arranged on the surface of the extension plate; and a first screw rod is screwed in the threaded pipe and connected with the plug hole.

[0011] A positioning hole is formed in the arc-shaped counterweight plate near the arc-shaped insertion plate; an insertion cavity is formed in the rolling roller and connected with the corresponding arc-shaped receiving groove; a blocking rod is slidably arranged in the insertion cavity and connected with the corresponding positioning hole; and a supporting spring is fixed between the bottom of the blocking rod and the inner bottom surface of the insertion cavity.

[0012] The application is further provided with: the end of the rolling roller is provided with an L-shaped guide slot communicated with the corresponding plug-in cavity; a second screw rod is screwed in the L-shaped guide slot; a connecting rope passing through the L-shaped guide slot is connected between the end of the second screw rod and the stop rod; a plurality of first mounting holes are uniformly provided on the end of the rolling roller; an inclined plate is fixed between the arc-shaped plug-in plate and the positioning hole on the side surface of the arc-shaped counterweight plate; a second mounting hole is provided on the side surface of the inclined plate; the first mounting hole and the corresponding second mounting hole are fixedly connected through a fastening bolt.

[0013] The application is further provided with: a third mounting hole is symmetrically provided on the surface of the sliding seat between the two sides of the arc-shaped slot; a stop portion is fixedly installed on the surface of the sliding seat; the stop portion comprises a triangular stop plate matched with the inclined plate; ear seats are symmetrically fixed at the two ends of the triangular stop plate; a fourth mounting hole is provided on the surface of the ear seat; the third mounting hole and the corresponding fourth mounting hole are fixedly connected through a fastening bolt.

[0014] The application is further provided with: a connecting plate is symmetrically fixedly installed between the two sliding seats; a stepping motor is fixedly installed on the surface of the sliding seat; a driving gear is fixed to the output end of the stepping motor; a gear ring matched with the driving gear is fixed to the outer circumferential surface of the arc-shaped support plate.

[0015] The application is further provided with: an arc-shaped rail is symmetrically fixed between the two fixed plates; a support seat is fixed to the bottom surface of the sliding seat and is in sliding cooperation with the arc-shaped rail; an arc-shaped iron plate is symmetrically fixed between the two fixed plates; an electromagnetic suction disc is fixedly installed on the side surface of the support seat; assembly holes are uniformly provided on the surface of the fixed plate; the fixed plate is fixedly installed in the front end of the road roller through the assembly holes; the output end of the internal controller of the road roller is respectively electrically connected with the driving motor, the stepping motor and the electromagnetic suction disc.

[0016] The application has the following advantages:

[0017] 1. The conveying part is used for transferring the arc-shaped counterweight plate, which is convenient for safely and quickly conveying the arc-shaped counterweight plate into the rolling roller, adjusting the rolling pressure of the rolling roller of the road roller, improving the work efficiency and reducing the safety hazard.

[0018] 2. The cooperation between the components is used for multiple limiting of the arc-shaped counterweight plate, improving the safety of road construction.

[0019] 3. The sliding of the sliding seat is controlled, the angle between the sliding seat and the rolling roller is adjusted, the arc-shaped counterweight plate is kept in the same center with the corresponding arc-shaped receiving slot during the transfer process, the normal transfer is ensured, and the practicability of the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1This is a schematic diagram of the structure of a road construction system according to the present invention.

[0021] Figure 2 For the present invention Figure 1 A structural diagram from a frontal viewpoint.

[0022] Figure 3 For the present invention Figure 2 Enlarged view of region A.

[0023] Figure 4 For the present invention Figure 2 A sectional view.

[0024] Figure 5 For the present invention Figure 4 Enlarged view of region B.

[0025] Figure 6 This is a schematic diagram of the road roller device of the present invention.

[0026] Figure 7 For the present invention Figure 6 A structural diagram from a frontal viewpoint.

[0027] Figure 8 For the present invention Figure 6 A structural diagram from another angle.

[0028] Figure 9 For the present invention Figure 7 A sectional view.

[0029] Figure 10 This is a schematic diagram of the arc-shaped counterweight plate of the present invention.

[0030] Figure 11 This is a schematic diagram of the conveying section of the present invention.

[0031] Figure 12 This is a schematic diagram of the conveying section of the present invention from another angle.

[0032] Figure 13 This is a schematic diagram of the structure of the stop part of the present invention.

[0033] In the diagram: 1. Rolling device; 2. Fixing plate; 3. V-shaped plate; 4. Roller roller; 5. Arc-shaped support plate; 6. Sliding seat; 7. Arc-shaped groove; 8. Arc-shaped baffle; 9. Arc-shaped counterweight plate; 10. Arc-shaped storage groove; 11. Conveying section; 12. Arc-shaped top plate; 13. Arc-shaped sleeve; 14. Extension plate; 15. Drive motor; 16. Bevel gear; 17. Bevel gear disc; 18. Arc-shaped insert plate; 19. Insert rod; 20. Insertion hole; 21. Threaded pipe; 22. First screw; 23. Positioning hole; 24. Insertion cavity; 25. Stop bar; 26. Support spring; 27. L-shaped guide groove; 28. Second screw; 29. ​​Connecting rope; 30. First mounting hole; 31. Inclined plate; 32. Second mounting hole; 33. Third mounting hole; 34. Stop part; 35. Triangular baffle; 36. Ear seat; 37. Fourth mounting hole; 38. Connecting plate; 39. Stepper motor; 40. Drive gear; 41. Gear ring; 42. Arc-shaped rail; 43. Support base; 44. Arc-shaped iron plate; 45. Assembly hole. Detailed Implementation

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0036] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0037] Example 1, please refer to Figures 1-13 The present invention provides the following technical solutions:

[0038] A road construction system, specifically, includes a road roller and a rolling device 1 fixedly installed at the front end of the road roller; the rolling device 1 includes two sets of fixed plates 2 arranged in parallel; V-shaped plates 3 are symmetrically fixed between the two fixed plates 2; a compaction roller 4 is rotatably arranged between the two V-shaped plates 3; an arc-shaped support plate 5 is fixed between the two fixed plates 2; sliding seats 6 are symmetrically fixed and slidably arranged on the periphery of the arc-shaped support plate 5; an arc-shaped groove 7 is opened on the surface of the sliding seat 6; a plurality of coaxially arranged arc-shaped baffles 8 are uniformly fixed on the outer periphery of the arc-shaped groove 7; an arc-shaped counterweight plate 9 is slidably arranged between two adjacent arc-shaped baffles 8; a plurality of arc-shaped receiving grooves 10 adapted to the corresponding arc-shaped counterweight plates 9 are uniformly fixed inside the compaction roller 4; a conveying part 11 that engages with the end of each arc-shaped counterweight plate 9 is slidably arranged inside the arc-shaped groove 7; the arc-shaped counterweight plate 9 engages with the corresponding arc-shaped receiving groove 10.

[0039] Working principle of this embodiment:

[0040] The conveying unit 11 facilitates the transfer of the arc-shaped counterweight plate 9, enabling it to be safely and quickly transported to the corresponding arc-shaped receiving groove 10 inside the roller 4. This allows for adjustment of the rolling pressure of the roller 4, improving work efficiency while reducing safety hazards. Through the coordinated use of various components, multiple limits are set on the arc-shaped counterweight plate 9, enhancing the safety of road construction.

[0041] Example 2, please refer to Figures 1-13 This second embodiment is an improvement on the first embodiment. Specifically, the conveying part 11 includes an arc-shaped top plate 12; several arc-shaped sleeves 13 are uniformly fixed on the inner circumferential side of the arc-shaped top plate 12; the arc-shaped sleeves 13 are slidably disposed between two adjacent arc-shaped baffles 8; a slide rail is fixed on the side of the arc-shaped sleeve 13; an arc-shaped groove that slides with the slide rail is opened on the side of the arc-shaped baffle 8; an extension plate 14 is fixed at the end of the arc-shaped top plate 12; a drive motor 15 is symmetrically fixed on the surface of the extension plate 14; a bevel gear 16 is fixedly fixed at the output end of the drive motor 15; and bevel gear discs 17 that mesh with the corresponding bevel gears 16 are symmetrically fixed on the two opposite sides of the sliding seat 6.

[0042] The slide rail on the side of the arc sleeve 13 is slidably set on the arc groove on the side of the arc baffle 8, which plays a limiting and guiding role for the conveying part 11, so that the conveying part 11 slides along the arc groove.

[0043] An arc-shaped counterweight plate 9 has an arc-shaped insert plate 18 fixed at its end, which is concentric with the arc-shaped counterweight plate 9; the arc-shaped insert plate 18 is slidably engaged with the corresponding arc-shaped sleeve 13; a guide groove is provided inside the arc-shaped insert plate 18; an insert rod 19 is slidably disposed inside the guide groove; a return spring is fixedly connected between the insert rod 19 and the guide groove; and an insertion hole 20 is provided on the inner wall of the arc-shaped sleeve 13 to engage with the corresponding insert rod 19.

[0044] The top of the inner side of the arc-shaped sleeve 13 is chamfered to facilitate the smooth entry of the insertion rod 19 into the arc-shaped sleeve 13.

[0045] The arc-shaped insert plate 18 at the end of the arc-shaped counterweight plate 9 is inserted into the corresponding arc-shaped sleeve 13. The insert rod 19 slides in along the chamfer at the top of the arc-shaped sleeve 13. During this process, the insert rod 19 is squeezed and slid into the guide groove inside the arc-shaped insert plate 18. The return spring is compressed. When the insert rod 19 slides to be coaxial with the corresponding insertion hole 20, under the elastic return action of the return spring, the insert rod 19 slides into the insertion hole 20, completing the snap-fit ​​connection between the arc-shaped counterweight plate 9 and the corresponding arc-shaped sleeve 13.

[0046] Several threaded tubes 21 are uniformly fixed through the surface of the extension plate 14; a first screw 22 that is inserted into the threaded tube 21 and engages with the insertion hole 20 is screwed inside the threaded tube 21.

[0047] A positioning hole 23 is provided on the side of the arc-shaped counterweight plate 9 near the position of the arc-shaped insert plate 18; an insertion cavity 24 communicating with the corresponding arc-shaped storage groove 10 is provided inside the rolling roller 4; a stop rod 25 is slidably provided inside the insertion cavity 24 and is inserted into the corresponding positioning hole 23; a support spring 26 is fixed between the bottom of the stop rod 25 and the bottom surface of the insertion cavity 24.

[0048] The end of the rolling roller 4 is provided with an L-shaped guide groove 27 that communicates with the corresponding insertion cavity 24; a second screw 28 is screwed into the L-shaped guide groove 27; a connecting rope 29 passing through the L-shaped guide groove 27 is connected between the end of the second screw 28 and the stop rod 25; a number of first mounting holes 30 are evenly provided at the end of the rolling roller 4; an inclined plate 31 is fixed on the side of the arc-shaped counterweight plate 9 between the arc-shaped insertion plate 18 and the positioning hole 23; a second mounting hole 32 is provided on the side of the inclined plate 31; the first mounting holes 30 and the corresponding second mounting holes 32 are fixedly connected by fastening bolts.

[0049] The sliding seat 6 has symmetrically opened third mounting holes 33 on both sides of the arc groove 7; a stop part 34 is fixedly installed on the surface of the sliding seat 6; the stop part 34 includes a triangular baffle 35 adapted to the inclined plate 31; ear seats 36 are symmetrically fixed at both ends of the triangular baffle 35; a fourth mounting hole 37 is opened on the surface of the ear seat 36; the third mounting hole 33 and the corresponding fourth mounting hole 37 are fixedly connected by fastening bolts.

[0050] A connecting plate 38 is symmetrically fixed between the two sliding seats 6; a stepper motor 39 is fixedly installed on the surface of the sliding seat 6; a drive gear 40 is fixed at the output end of the stepper motor 39; and a gear ring 41 that meshes with the drive gear 40 is fixed on the outer side of the arc-shaped support plate 5.

[0051] An arc-shaped rail 42 is symmetrically fixed between the two fixed plates 2; a support seat 43 that slides and engages with the arc-shaped rail 42 is fixed to the bottom surface of the sliding seat 6; an arc-shaped iron plate 44 is symmetrically fixed between the two fixed plates 2; an electromagnetic chuck is fixedly installed on the side of the support seat 43; mounting holes 45 are evenly opened on the surface of one fixed plate 2; the fixed plate 2 is fixedly installed at the front end of the road roller through the mounting holes 45; the output end of the internal controller of the road roller is electrically connected to the drive motor 15, the stepper motor 39 and the electromagnetic chuck respectively; the drive motor 15 and the stepper motor 39 are both motors with brakes.

[0052] Working principle of this embodiment two:

[0053] In the initial state, each set of arc-shaped counterweight plates 9 is snapped into the corresponding arc-shaped sleeve 13. The bevel gear 16 at the output end of the drive motor 15 meshes with the bevel gear disc 17 to achieve a first-level limit on each set of arc-shaped counterweight plates 9. The triangular baffle 35 is placed in close contact with each set of inclined plates 31. The ear seat 36 is fixedly installed on the surface of the sliding seat 6 by fastening bolts to achieve a second-level limit on each set of arc-shaped counterweight plates 9, thereby improving the stability and safety of the arc-shaped counterweight plates 9 on the sliding seat 6.

[0054] When counterweighting is required, the roller is stopped, the stop 34 is removed, and the drive motor 15 is started to drive the corresponding bevel gear 16 to rotate along the corresponding bevel gear disc 17. This causes each set of arc-shaped counterweight plates 9 to slide towards the corresponding arc-shaped receiving groove 10 simultaneously, until each set of arc-shaped counterweight plates 9 slides into the corresponding arc-shaped receiving groove 10. During this process, the ends of the arc-shaped counterweight plates 9 (the ends of the stop bar 25 are equipped with ball heads, and one end of the arc-shaped counterweight plate 9 is chamfered) can squeeze out as they slide into the arc-shaped receiving groove 10. Pressing the corresponding ball head causes the stop rod 25 to slide and retract into the insertion cavity 24, compressing the support spring 26. When the positioning hole 23 slides to be coaxial with the stop rod 25, under the elastic reset action of the support spring 26, the stop rod 25 is driven to insert into the positioning hole 23, completing the first limiting of the arc-shaped counterweight plate 9 and the rolling roller 4. After the counterweight is completed, the inclined plate 31 is fixed to the end of the rolling roller 4 by the fastening bolts, completing the second limiting of the arc-shaped counterweight plate 9 and the rolling roller 4, improving the stability and safety of the arc-shaped counterweight plate 9 during the operation of the rolling roller 4.

[0055] After the stop rod 25 is inserted into the positioning hole 23, the number of arc-shaped counterweight plates 9 used for counterweight can be selected. Taking two sets of arc-shaped counterweight plates 9 with opposite counterweights as an example, the corresponding first screw 22 is rotated to make it rotate and descend along the threaded tube 21, thereby pressing down the insertion rod 19 through the first screw 22, causing the insertion rod 19 to disengage from the insertion hole 20. The second screw 28 corresponding to the remaining arc-shaped counterweight plates 9 is rotated in sequence, causing the corresponding second screw 28 to rotate and advance in a direction away from the insertion cavity 24, thereby tightening the connecting rope 29, and then pulling the stop rod 25 to slide down along the insertion cavity 24 and be stored in the corresponding insertion cavity 24, so that the stop rod 25 slides and disengages from the positioning hole 23 on the corresponding arc-shaped counterweight plate 9. The control conveying part 11 slides and resets in the opposite direction, thereby driving the remaining arc-shaped counterweight plates 9 to slide and reset, completing the counterweighting of the specified arc-shaped counterweight plates 9.

[0056] The stopping position of the pressing roller 4 may be deviated. The position of the sliding seat 6 needs to be adjusted by the stepper motor 39 (at least to ensure that the corresponding arc-shaped storage groove 10 is placed below the central axis of the pressing roller 4 after each stop). This can be achieved by controlling the start of the stepper motor 39 to drive the drive gear 40 to rotate and move on the gear ring 41, thereby adjusting the position of the sliding seat 6 so that the arc-shaped baffle 8 on the sliding seat 6 is coaxial with the corresponding arc-shaped storage groove 10, which facilitates subsequent counterweight operation. After the position of the sliding seat 6 is adjusted, the electromagnetic chuck is controlled to electromagnetically attract the side of the arc-shaped iron plate 44 to improve the stability of the sliding seat 6.

[0057] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0058] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0059] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0061] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A road construction system comprising a road roller and a road rolling device (1) fixedly mounted at the front end of the road roller; characterized in that: The road roller device (1) comprises two groups of fixed plates (2) arranged in parallel, V-shaped plates (3) are fixed symmetrically between the two fixed plates (2), and a rolling roller (4) is rotatably arranged between the two V-shaped plates (3). Arc-shaped support plates (5) are fixed between the two fixed plates (2), sliding seats (6) are symmetrically and slidingly arranged on the circumferential surface of the arc-shaped support plates (5), arc-shaped grooves (7) are formed in the surface of the sliding seats (6), a plurality of arc-shaped baffle plates (8) are uniformly and coaxially arranged on the circumferential surface of the arc-shaped grooves (7), arc-shaped counterweight plates (9) are slidingly arranged between adjacent two arc-shaped baffle plates (8), and a plurality of arc-shaped receiving grooves (10) corresponding to the arc-shaped counterweight plates (9) are uniformly and fixedly arranged in the rolling roller (4). A conveying part (11) is slidingly arranged in the arc-shaped groove (7) and is connected with the end of each arc-shaped counterweight plate (9). The conveying part (11) comprises an arc-shaped top plate (12), a plurality of arc-shaped sleeves (13) are uniformly and fixedly arranged on the inner circumferential surface of the arc-shaped top plate (12), the arc-shaped sleeves (13) are slidingly arranged between adjacent two arc-shaped baffle plates (8), sliding rails are fixed on the side surface of the arc-shaped sleeves (13), arc-shaped sliding grooves are formed in the side surface of the arc-shaped baffle plates (8) and are slidingly connected with the sliding rails, an extension plate (14) is fixed on the end of the arc-shaped top plate (12), a driving motor (15) is symmetrically and fixedly arranged on the surface of the extension plate (14), a bevel gear (16) is fixedly arranged on the output end of the driving motor (15), and a bevel gear plate (17) is symmetrically and fixedly arranged on the opposite side surfaces of the sliding seat (6) and is meshed with the corresponding bevel gear (16). A positioning hole (23) is formed in the arc-shaped counterweight plate (9) near the arc-shaped insertion plate (18), an insertion cavity (24) is formed in the rolling roller (4) and is communicated with the corresponding arc-shaped receiving groove (10), a blocking rod (25) is slidingly arranged in the insertion cavity (24) and is inserted into the corresponding positioning hole (23), and a supporting spring (26) is arranged between the bottom of the blocking rod (25) and the inner bottom surface of the insertion cavity (24). An L-shaped guide groove (27) is formed in the end of the rolling roller (4) and is communicated with the corresponding insertion cavity (24), a second screw rod (28) is screwed in the L-shaped guide groove (27), and a connecting rope (29) penetrating through the L-shaped guide groove (27) is connected between the end of the second screw rod (28) and the blocking rod (25).

2. A road construction system according to claim 1, characterized in that: An arc-shaped insertion plate (18) is fixed on the end of the arc-shaped counterweight plate (9) and is coaxial with the arc-shaped counterweight plate (9), the arc-shaped insertion plate (18) is slidingly connected with the corresponding arc-shaped sleeve (13), a guide groove is formed in the arc-shaped insertion plate (18), an insertion rod (19) is slidingly arranged in the guide groove, a reset spring is fixedly connected between the insertion rod (19) and the guide groove, and an insertion hole (20) is formed in the inner wall of the arc-shaped sleeve (13) and is inserted into the corresponding insertion rod (19).

3. A road construction system according to claim 2, characterised in that: The extending plate (14) is uniformly provided with a plurality of threaded pipes (21) on the surface; the threaded pipe (21) is internally screwed with the first screw rod (22) which is plugged with the jack (20).

4. A road construction system according to claim 3, characterised in that: The end of the rolling roller (4) is uniformly provided with a plurality of first installation holes (30); the side surface of the arc-shaped counterweight plate (9) is fixed with the inclined plate (31) between the arc-shaped insertion plate (18) and the positioning hole (23); the side surface of the inclined plate (31) is provided with the second installation hole (32); the first installation hole (30) and the corresponding second installation hole (32) are fixedly connected through the fastening bolt.

5. A road construction system according to claim 4, characterised in that: The surface of the sliding seat (6) is symmetrically provided with the third installation hole (33) on both sides of the arc-shaped groove (7); the sliding seat (6) is fixedly installed with the stop portion (34); the stop portion (34) comprises the triangular baffle (35) which is matched with the inclined plate (31); the both ends of the triangular baffle (35) are symmetrically fixed with the lug (36); the surface of the lug (36) is provided with the fourth installation hole (37); the third installation hole (33) and the corresponding fourth installation hole (37) are fixedly connected through the fastening bolt.

6. A road construction system according to claim 5, characterised in that: The connecting plate (38) is symmetrically fixed and installed between the two sliding seats (6); the sliding seat (6) is fixedly installed with the stepping motor (39); the output end of the stepping motor (39) is fixed with the driving gear (40); the outer circumferential surface of the arc-shaped support plate (5) is fixed with the gear ring (41) which is meshed with the driving gear (40).

7. A road construction system according to claim 6, characterised in that: The arc-shaped rail (42) is symmetrically fixed between the two fixed plates (2); the bottom surface of the sliding seat (6) is fixed with the support seat (43) which is slidably matched with the arc-shaped rail (42); the arc-shaped iron plate (44) is symmetrically fixed between the two fixed plates (2); the support seat (43) is fixedly installed with the electromagnetic suction disc on the side surface; the surface of the fixed plate (2) is uniformly provided with the assembly hole (45); the fixed plate (2) is fixedly installed in the front end of the road roller through the assembly hole (45); the output end of the internal controller of the road roller is respectively electrically connected with the driving motor (15), the stepping motor (39) and the electromagnetic suction disc.

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