Bridge roadbed pavement leveling device

Abstract

The invention discloses a beam roadbed pavement leveling device which comprises a flat scraping mechanism arranged at the front end of an engineering tractor and a compaction mechanism arranged at the rear end of the engineering tractor. The flat scraping mechanism comprises a main flat scraping plate, two auxiliary flat scraping plates are symmetrically arranged on the side, close to the engineering tractor, of the main flat scraping plate in a sliding mode, a transmission square cylinder is fixedly arranged on the upper portion of the main flat scraping plate, and the transmission square cylinder is fixedly connected with the front end of the engineering tractor. The transmission square cylinder is provided with a telescopic adjusting mechanism used for driving the two auxiliary flat scraping plates to move in the face-to-face or back-to-back mode. The compaction mechanism comprises a rack plate, one end of the rack plate is fixedly connected with the rear end of the engineering tractor, a first roller seat is fixedly arranged at the other end of the rack plate, and a middle compression roller is rotationally arranged on the first roller seat. According to the device, the effective width of the flat scraping mechanism and the effective width of the compaction mechanism can be conveniently adjusted in the construction scene of bridges with different widths, and therefore the diversified construction requirements are met.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction equipment, and particularly relates to a device for leveling the roadbed and pavement of a bridge. Background Art

[0002] During the construction process of the roadbed and pavement of a bridge, the pavement flatness is one of the key factors affecting the project quality and service life. Traditional manual leveling or mechanical leveling methods have problems such as low efficiency, high labor intensity, and poor leveling effect. Therefore, at present, by using engineering vehicles to tow corresponding flat scraping plates, pressing rollers and other equipment for leveling the roadbed and pavement of the bridge, the construction efficiency can be effectively improved. However, most of the existing roadbed and pavement leveling devices adopt a design with a fixed width. In construction scenarios with different widths, the adjustment range of the existing equipment is limited, and it is difficult to meet the diverse engineering requirements. Therefore, a device for leveling the roadbed and pavement of a bridge with a flexible width adjustment function is developed. Summary of the Invention

[0003] The purpose of the present invention is to provide a device for leveling the roadbed and pavement of a bridge to solve the technical problems mentioned in the above background art.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A device for leveling the roadbed and pavement of a bridge according to the present invention includes a flat scraping mechanism arranged at the front end of an engineering tractor and a compaction mechanism arranged at the rear end of the engineering tractor.

[0006] The flat scraping mechanism includes a main flat scraping plate. Two auxiliary flat scraping plates are symmetrically and slidably arranged on one side of the main flat scraping plate close to the engineering tractor. A transmission square tube is fixedly arranged on the upper part of the main flat scraping plate. The transmission square tube is fixedly connected to the front end of the engineering tractor. An expansion and contraction adjustment mechanism for driving the two auxiliary flat scraping plates to move towards or away from each other is arranged on the transmission square tube.

[0007] The compaction mechanism includes a frame plate with one end fixedly connected to the rear end of the engineering tractor. A first roller seat is fixedly arranged at the other end of the frame plate. A middle pressing roller is rotatably arranged on the first roller group. Two second roller seats are symmetrically arranged at both ends of the frame plate. One end of the two second roller seats close to the frame plate is rotatably connected to the frame plate. And a flipping adjustment mechanism for driving the two second roller seats to rotate relatively is arranged on the frame plate. Side pressing rollers are respectively rotatably arranged on the two second roller seats.

[0008] Furthermore, two horizontal connecting plates are symmetrically and fixedly arranged at both ends of the transmission square tube. The two connecting plates are fixedly connected to the front end of the engineering tractor.

[0009] Further, a horizontal mounting plate is fixedly arranged at the front end of the engineering tractor, and two hydraulic cylinders are symmetrically and fixedly arranged on the mounting plate. The telescopic ends of the two hydraulic cylinders are respectively fixedly connected to one ends of the two connecting plates away from the transmission square tube.

[0010] Further, the telescopic adjustment mechanism includes a transmission screw rod rotatably arranged inside the transmission square tube and a first hydraulic motor fixedly arranged on the transmission square tube for driving the transmission screw rod to rotate. The external thread rotation directions at both ends of the transmission screw rod are opposite, and transmission screw sleeves threadedly connected to both ends of the transmission screw rod are respectively fixedly arranged on the upper parts of the two ends where the auxiliary flat scraping plates are close to each other.

[0011] Further, the first hydraulic motor is fixedly arranged in the middle of the upper part of the transmission square tube, and its drive shaft extends into the interior of the transmission square tube and is provided with a driving bevel gear; a driven bevel gear adapted to the driving bevel gear is sleeved on the middle part of the transmission screw rod.

[0012] Further, the bottoms of the transmission screw sleeves are respectively fixedly connected to the corresponding auxiliary flat scraping plates through limit sliders; the cross sections of the limit sliders are T-shaped, the upper ends of the horizontal parts thereof are fixedly connected to the bottoms of the corresponding transmission screw sleeves, and the lower ends are flatly attached to the upper surface of the bottom plate of the transmission square tube; the vertical parts of the limit sliders are in sliding fit with limit sliding grooves opened on the bottom plate of the transmission square tube, and the lower ends of the vertical parts are fixedly connected to the corresponding auxiliary flat scraping plates.

[0013] Further, one end of the frame plate is fixedly connected to the rear end of the engineering tractor through a towing frame.

[0014] Further, two rotating shafts are symmetrically and rotatably arranged on the frame plate, the upper ends of the two rotating shafts are respectively fixedly connected to one ends of two connecting arms, and the other ends of the two connecting arms are respectively connected to one ends of the upper parts of the two second roller seats.

[0015] Further, the two connecting arms are respectively detachably connected to the corresponding second roller seats through a plurality of uniformly arranged bolts.

[0016] Further, the flipping adjustment mechanism includes a second hydraulic motor fixedly arranged at the bottom of the frame plate, the drive shaft of the second hydraulic motor is connected to the lower end of one of the rotating shafts, and transmission gears engaged with each other are arranged at the parts of the two rotating shafts between the connecting arms and the frame plate.

[0017] Compared with the prior art, the beneficial technical effects of the present invention:

[0018] During the operation of the present invention, an engineering tractor drives a flat scraping mechanism and a compaction mechanism to move on the ground. First, the main flat scraper and the auxiliary flat scraper of the flat scraping mechanism at the front end of the engineering tractor level the uneven parts of the bridge subgrade pavement. Then, the middle roller and the side rollers of the compaction mechanism at the rear end of the engineering tractor flatten the bridge subgrade pavement, ensuring flatness and effectively improving the construction efficiency.

[0019] The scraper of the flat scraping mechanism of the present invention is set as an adjustable telescopic mechanism. The driving screw rod is driven to rotate by a first hydraulic motor. Since the two transmission nuts maintain a threaded connection relationship with both ends of the driving screw rod, when the driving screw rod rotates, the two transmission nuts drive the two auxiliary flat scrapers to move towards and away from each other, changing the extension length of the two auxiliary flat scrapers relative to the main flat scraper, thereby realizing the width adjustment of the entire flat scraping mechanism.

[0020] On both sides of the middle roller of the present invention, there are symmetrically arranged flip - up side rollers. The corresponding rotating shafts are driven to rotate by a second hydraulic motor. Under the meshing action of the two transmission gears, the two rotating shafts rotate relative to each other. Furthermore, the two connecting arms drive the two second roller seats to flip relative to each other, realizing the adaptive adjustment of the effective compaction width of the entire compaction mechanism.

[0021] Therefore, the present invention can meet the convenient adjustment of the effective widths of the flat scraping mechanism and the compaction mechanism in the construction scenarios of bridges with different widths, thereby adapting to diverse construction requirements. Brief Description of the Drawings

[0022] The present invention will be further described below in conjunction with the drawings.

[0023] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 is a schematic diagram of the flat scraping mechanism of the present invention;

[0025] Figure 3 is Figure 1 a cross - sectional view taken along the A - A direction in

[0026] Figure 4 is a schematic diagram of the compaction mechanism of the present invention;

[0027] Figure 5 is a schematic diagram of the installation of the middle roller of the present invention;

[0028] Figure 6 is a schematic diagram of the installation of the side roller of the present invention;

[0029] Description of reference numerals: 1. Engineering tractor; 2. Main flat scraper; 3. Auxiliary flat scraper; 4. Transmission square tube; 5. Connecting plate; 6. Mounting plate; 7. Hydraulic cylinder; 8. Transmission screw; 9. First hydraulic motor; 10. Driving bevel gear; 11. Driven bevel gear; 12. Transmission screw sleeve; 13. Limit slider; 14. Limit chute; 15. Frame plate; 16. Towing frame; 17. First roller seat; 18. Middle pressing roller; 19. Second roller seat; 20. Side pressing roller; 21. Rotating shaft; 22. Connecting arm; 23. Bolt; 24. Second hydraulic motor; 25. Transmission gear. Detailed implementation manner

[0030] As Figures 1-6 shown, a bridge subgrade and pavement leveling device includes a flat scraping mechanism installed at the front end of the engineering tractor 1 and a compaction mechanism installed at the rear end of the engineering tractor 1.

[0031] The flat scraping mechanism includes a main flat scraper 2, and two auxiliary flat scrapers 3 are symmetrically and slidably installed on one side of the main flat scraper 2 close to the engineering tractor 1. A transmission square tube 4 is fixedly arranged on the upper part of the main flat scraper 2, and the transmission square tube 4 is fixedly connected to the front end of the engineering tractor 1. An expansion and adjustment mechanism for driving the two auxiliary flat scrapers 3 to move towards or away from each other is arranged on the transmission square tube 4.

[0032] Two horizontal connecting plates 5 are symmetrically and fixedly arranged at both ends of the transmission square tube 4, and the two connecting plates 5 are fixedly connected to the front end of the engineering tractor 1. Specifically: A horizontal mounting plate 6 is fixedly arranged at the front end of the engineering tractor 1, and two hydraulic cylinders 7 are symmetrically and fixedly installed on the mounting plate 6 along the vertical direction. The telescopic ends of the two hydraulic cylinders 7 are respectively fixedly connected to one ends of the two connecting plates 5 away from the transmission square tube 4. Through the telescopic movement of the two hydraulic cylinders 7, the height of the entire flat scraping mechanism can be adaptively adjusted, which can not only meet the leveling operation of the main flat scraper and the auxiliary flat scraper on the bridge subgrade and pavement, but also raise the bottom of the flat scraping mechanism to a moving height when the engineering tractor is driving in a non-operating state, avoiding scraping the ground with the main flat scraper and the auxiliary flat scraper.

[0033] In this embodiment, the telescopic adjustment mechanism includes a transmission screw rod 8 rotatably installed inside the transmission square tube 4 and a first hydraulic motor 9 fixedly installed on the transmission square tube 4 for driving the transmission screw rod 8 to rotate. Specifically: The first hydraulic motor 9 is fixedly installed in the middle of the upper part of the transmission square tube 4, and its drive shaft extends into the transmission square tube 4 and is equipped with a driving bevel gear 10; A driven bevel gear 11 adapted to the driving bevel gear 10 is sleeved in the middle of the transmission screw rod 8. The external thread rotation directions at both ends of the transmission screw rod 8 are opposite, and transmission screw sleeves 12 threadedly connected to both ends of the transmission screw rod 8 are respectively fixedly arranged at the upper parts of the ends of the two auxiliary flat scrapers 3 close to each other.

[0034] The scraper of the flat scraping mechanism of the present invention is set as an adjustable telescopic mechanism. The transmission screw rod is driven to rotate by the first hydraulic motor. Since the two transmission screw sleeves maintain a threaded connection relationship with both ends of the transmission screw rod, when the transmission screw rod rotates, the two transmission screw sleeves drive the two auxiliary flat scrapers to move towards and away from each other, changing the extension length of the two auxiliary flat scrapers relative to the main flat scraper, thereby realizing the width adjustment of the entire flat scraping mechanism.

[0035] In addition, the bottoms of the transmission screw sleeves 12 of the present invention are respectively fixedly connected to the corresponding auxiliary flat scrapers 3 through limit sliders 13. The cross-section of each limit slider 13 is T-shaped. The upper end of its horizontal part is fixedly connected to the bottom of the corresponding transmission screw sleeve 12, and the lower end is flatly attached to the upper surface of the bottom plate of the transmission square tube 4. The vertical part of each limit slider 13 is slidably matched with a limit sliding groove 14 opened on the bottom plate of the transmission square tube 4, and the lower end of its vertical part is fixedly connected to the corresponding auxiliary flat scraper 3. By fixedly connecting the transmission screw sleeve 12 and the corresponding auxiliary flat scraper 3 through the limit slider 13, and the limit sliding relationship between the limit slider and the limit sliding groove, the stability of the linear movement of the two auxiliary flat scrapers can be ensured.

[0036] The compaction mechanism includes a frame plate 15 fixedly connected to the rear end of the engineering tractor 1. Specifically: One end of the frame plate 15 is fixedly connected to the rear end of the engineering tractor 1 through a traction frame 16. The other end of the frame plate 15 is fixedly provided with a first roller seat 17, and a middle pressure roller 18 is rotatably installed on the first roller group 17. Two second roller seats 19 are symmetrically arranged at both side ends of the frame plate 15. One end of the two second roller seats 19 close to the frame plate 15 is rotatably connected to the frame plate, and a flipping adjustment mechanism for driving the two second roller seats 19 to rotate relative to each other is arranged on the frame plate 15, and side pressure rollers 20 are respectively rotatably arranged on the two second roller seats.

[0037] Two rotating shafts 21 are symmetrically and rotatably installed on the frame plate 15. The upper ends of the two rotating shafts 20 are respectively fixedly connected to one ends of two connecting arms 22. The other ends of the two connecting arms 22 are respectively connected to the upper ends of the two second roller seats 19. Specifically, the two connecting arms 22 are respectively detachably connected to the corresponding second roller seats 19 through a plurality of uniformly arranged bolts 23.

[0038] In this embodiment, the flipping and adjusting mechanism includes a second hydraulic motor 24 fixedly installed at the bottom of the frame plate 15. The drive shaft of the second hydraulic motor 24 is connected to the lower end of one of the rotating shafts 20. The two rotating shafts 20 are provided with meshing transmission gears 25 at the positions between the connecting arms 22 and the frame plate 15.

[0039] When the present invention is in operation, the engineering tractor drives the flat scraping mechanism and the compaction mechanism to move on the ground. First, the main flat scraper and the auxiliary flat scraper of the flat scraping mechanism at the front end of the engineering tractor scrape the uneven parts of the bridge subgrade pavement. Then, the middle roller and the side rollers of the compaction mechanism at the rear end of the engineering tractor flatten the bridge subgrade pavement, ensuring the flatness and effectively improving the construction efficiency.

[0040] The scraper of the flat scraping mechanism of the present invention is set as an adjustable telescopic mechanism. The first hydraulic motor drives the transmission screw to rotate. Since the two transmission nuts maintain a threaded connection relationship with both ends of the transmission screw, when the transmission screw rotates, the two transmission nuts drive the two auxiliary flat scrapers to move towards and away from each other, changing the extension length of the two auxiliary flat scrapers relative to the main flat scraper, thereby realizing the width adjustment of the entire flat scraping mechanism.

[0041] The present invention is symmetrically provided with flip - up side rollers on both sides of the middle roller. The second hydraulic motor drives the corresponding rotating shafts to rotate. Under the meshing action of the two transmission gears, the two rotating shafts rotate relative to each other. Further, the two connecting arms drive the two second roller seats to flip relative to each other, realizing the adaptive adjustment of the effective compaction width of the entire compaction mechanism.

[0042] Therefore, the present invention can meet the convenient adjustment of the effective widths of the flat scraping mechanism and the compaction mechanism in the construction scenarios of bridges with different widths, so as to adapt to diverse construction requirements.

[0043] The above - described embodiments are only descriptions of the preferred modes of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A bridge roadbed and pavement leveling device, characterized in that: It includes a flat scraping mechanism arranged at the front end of the engineering tractor and a compaction mechanism arranged at the rear end of the engineering tractor; The flat scraping mechanism includes a main flat scraper. On the side of the main flat scraper close to the engineering tractor, two auxiliary flat scrapers are symmetrically and slidably arranged. A transmission square tube is fixedly arranged on the upper part of the main flat scraper, and the transmission square tube is fixedly connected to the front end of the engineering tractor. An expansion and adjustment mechanism for driving the two auxiliary flat scrapers to move towards or away from each other is arranged on the transmission square tube; The compaction mechanism includes a frame plate with one end fixedly connected to the rear end of the engineering tractor. A first roller seat is fixedly arranged at the other end of the frame plate. A middle pressure roller is rotatably arranged on the first roller group. Two second roller seats are symmetrically arranged at both ends of the frame plate. One end of the two second roller seats close to the frame plate is rotatably connected to the frame plate, and a flipping adjustment mechanism for driving the two second roller seats to rotate relatively is arranged on the frame plate. Side pressure rollers are respectively rotatably arranged on the two second roller seats.

2. The bridge roadbed and pavement leveling device according to claim 1, characterized in that: Two horizontal connecting plates are symmetrically and fixedly arranged at both ends of the transmission square tube, and the two connecting plates are fixedly connected to the front end of the engineering tractor.

3. The bridge roadbed and pavement leveling device according to claim 2, characterized in that: A horizontal mounting plate is fixedly arranged at the front end of the engineering tractor. Two hydraulic cylinders are symmetrically and fixedly arranged on the mounting plate. The telescopic ends of the two hydraulic cylinders are respectively fixedly connected to one end of the two connecting plates far from the transmission square tube.

4. The bridge roadbed and pavement leveling device according to claim 1, characterized in that: The expansion and adjustment mechanism includes a transmission screw rod rotatably arranged inside the transmission square tube and a first hydraulic motor fixedly arranged on the transmission square tube for driving the transmission screw rod to rotate. The external threads at both ends of the transmission screw rod have opposite helix directions. The upper parts of the ends of the two auxiliary flat scrapers close to each other are respectively fixedly provided with transmission nuts threadedly connected to both ends of the transmission screw rod.

5. The bridge roadbed and pavement leveling device according to claim 4, wherein: The first hydraulic motor is fixedly arranged in the middle of the upper part of the transmission square tube, and its drive shaft extends into the interior of the transmission square tube and is provided with a driving bevel gear; a driven bevel gear adapted to the driving bevel gear is sleeved on the middle of the transmission screw rod.

6. The bridge roadbed and pavement leveling device according to claim 4, characterized in that: The bottoms of the respective transmission nuts are respectively fixedly connected to the corresponding auxiliary flat scrapers through limit sliders; the cross-section of each limit slider is T-shaped, the upper end of its horizontal part is fixedly connected to the bottom of the corresponding transmission nut, and the lower end is flatly attached to the upper surface of the bottom plate of the transmission square tube; the vertical part of each limit slider is slidably matched with a limit chute opened on the bottom plate of the transmission square tube, and the lower end of its vertical part is fixedly connected to the corresponding auxiliary flat scraper.

7. The bridge roadbed and pavement leveling device according to claim 1, characterized in that: One end of the frame plate is fixedly connected to the rear end of the engineering tractor through a traction frame.

8. The bridge roadbed and pavement leveling device according to claim 1, wherein: Two rotating shafts are symmetrically and rotatably arranged on the frame plate. The upper ends of the two rotating shafts are respectively fixedly connected to one end of two connecting arms. The other ends of the two connecting arms are respectively connected to the upper ends of the two second roller seats.

9. The bridge roadbed and pavement leveling device according to claim 8, characterized in that: The two connecting arms are respectively detachably connected to the corresponding second roller seats through a plurality of uniformly arranged bolts.

10. The bridge roadbed and pavement leveling device according to claim 8, characterized in that: The flipping adjustment mechanism includes a second hydraulic motor fixedly arranged at the bottom of the frame plate. The drive shaft of the second hydraulic motor is connected to the lower end of one of the rotating shafts. Transmission gears that mesh with each other are arranged at the parts of the two rotating shafts located between the connecting arm and the frame plate.

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