A municipal highway bridge construction road surface paving device

Abstract

The application belongs to the field of road and bridge construction, and particularly relates to a road paving device for municipal road and bridge construction, which comprises two track beams symmetrically arranged on both sides of a road, a horizontal plate arranged on the two track beams, and walking wheel sets arranged on the bottom of the horizontal plate and matched with the track beams; a steering shaft is arranged at the front end of the horizontal plate, a paving plate is fixed to the lower end of the steering shaft, the paving plate is spliced by a flow dividing plate and two smearing plates fixed to the two sides of the flow dividing plate, the middle part of the flow dividing plate is in a forwardly arched conical structure, a fixing shaft is rotatably connected to the horizontal plate, and the paving plate is in transmission connection with the fixing shaft through a gear transmission assembly; when the concrete accumulation amount at the front end of the two smearing plates is different, the application can automatically adjust and evenly divide the concrete in the middle of the road, ensure the flatness of the road, and control the rake teeth to automatically avoid the stones in the concrete, so that the stones are evenly distributed in the concrete.

Description

Technical Field

[0001] This invention belongs to the field of road and bridge construction, and in particular relates to a road surface paving device for municipal highway bridge construction. Background Technology

[0002] Municipal highway bridge construction mainly uses cement concrete pavement. With the continuous development of transportation highways, the requirements for pavement smoothness are getting higher and higher. Pavement smoothness is the most important indicator of highway performance. In the paving of concrete pavement, pavement leveling devices are mostly used to ensure the smoothness of the concrete pavement.

[0003] Existing road paving devices, such as the road and bridge construction cement paving device disclosed in Chinese Patent Publication No. CN111576145B, use guide blocks to push the cement concrete piled in the middle of the road to both sides of the road, use rotating L-shaped square tubes to rake the road surface, and use paving boards to smooth the road surface, resulting in a good road paving effect.

[0004] The above technical solution still has the following problems:

[0005] 1. When cement concrete is piled up in the middle of the road, its position may shift, making it difficult to ensure that the cement concrete is in the center of the road. The existing paving device cannot adjust the flow according to the position of the cement concrete pile, resulting in uneven height on both sides of the road and affecting the smoothness.

[0006] 2. Cement concrete contains sand and gravel that act as a skeleton. In the above scheme, when the rake teeth move with the paving device as a whole, in order to ensure the removal effect of hollow air bubbles in the concrete, the rake teeth are arranged relatively densely. This makes it easy to filter out the stones and move forward with the whole device, resulting in uneven distribution of stones in the concrete, thereby damaging the strength and quality of the road surface. Summary of the Invention

[0007] The purpose of this invention is to address the problems mentioned in the background art, such as the inability to adjust the flow according to the location of cement concrete accumulation, resulting in uneven heights on both sides of the road surface, affecting the smoothness, and the rake teeth easily filtering out stones and moving forward with the whole device, leading to uneven distribution of stones in the concrete, thereby damaging the strength and quality of the road surface. The invention provides a road surface paving device for municipal highway bridge construction.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a road surface paving device for municipal highway bridge construction, comprising two track beams symmetrically laid on both sides of the road, a cross plate mounted on the two track beams, and a set of traveling wheels that cooperate with the track beams installed at the bottom of the cross plate;

[0009] The front end of the horizontal plate is provided with a steering shaft, and a paving plate is fixed at the lower end of the steering shaft. The paving plate is spliced ​​together from a diversion plate and two screed plates respectively fixed on both sides of the diversion plate. The diversion plate has a forward-arching conical structure in the middle. A fixed shaft is rotatably connected to the horizontal plate. The paving plate is connected to the fixed shaft through a gear transmission assembly. When there is a difference in the amount of concrete accumulated at the front end of the two screed plates, the paving plate is moved horizontally to the side with more concrete accumulation, so that the concrete is evenly distributed to both sides of the road surface.

[0010] Furthermore, baffles are fixed to the bottom surfaces at both ends of the horizontal plate.

[0011] Furthermore, the gear transmission assembly includes a rack slidably connected to the upper surface of the cross plate and parallel to the road width direction, a bracket fixedly connected to the rack, a steering shaft rotatably connected to the bracket via a spring, a gear fixed on the fixed shaft, the gear meshing with the rack, and pulleys fixed to the upper ends of both the steering shaft and the fixed shaft, with the two pulleys connected by a belt.

[0012] Furthermore, it also includes a leveling assembly, which includes a mounting plate arranged parallel to the bottom of the horizontal plate. The bottom surface of the mounting plate is evenly distributed with rake teeth, which are rotatably connected to the mounting plate. Two guide rods are fixed on the upper surface of the mounting plate. The guide rods are slidably connected to the horizontal plate and are fitted with springs. The two ends of the springs are respectively connected to the horizontal plate and the mounting plate.

[0013] Furthermore, a reciprocating threaded rod is coaxially fixed to the lower end of the fixed shaft, and a nut is threaded onto the reciprocating threaded rod. The nut is fixedly connected to the mounting plate via a connecting rod.

[0014] Furthermore, the rake teeth adopt a conical structure, and the sidewalls of the rake teeth are evenly distributed with several protruding ridges arranged along their length.

[0015] Furthermore, the horizontal plate is installed at a height of 0.5-0.6m from the road surface, the mounting plate is installed at a height of 0.25-0.35m from the road surface, and the length of the rake teeth is 0.35m.

[0016] Furthermore, a limiting groove is formed on the upper surface of the horizontal plate, and a ball is embedded in the side wall of the limiting groove. The rack slides within the limiting groove.

[0017] Compared with existing technologies, the advantages of this road surface paving device for municipal highway bridge construction are:

[0018] 1. This invention, by setting up a gear transmission assembly, addresses the issue that when the amount of concrete accumulated at the front of the slabs on both sides of the diverter plate is uneven, the slab with more concrete accumulation experiences greater resistance as it moves along the road surface. The slab then rotates its steering axis at a certain angle towards the side with more concrete accumulation, thereby causing the fixed shaft to rotate. Through gears and racks, the slab moves a certain distance towards the side with more concrete accumulation. The diverter plate then distributes the concrete accumulated in the middle of the road surface evenly towards the side with less concrete accumulation in front of the slab until the amount of concrete accumulated in front of both slabs is equal. This achieves automatic adjustment and uniform distribution, ensuring the smoothness of the road surface.

[0019] 2. By setting rake teeth, the present invention can reduce air bubbles in the concrete by moving the rake teeth in the road surface concrete. The rake teeth can rotate freely at the bottom of the mounting plate. When the rake teeth come into contact with the stones in the concrete, the rake teeth can rotate to avoid pushing the stones and ensure that the stones are evenly distributed in the concrete.

[0020] 3. By setting a reciprocating threaded rod and nut, when the fixed shaft rotates, it can drive the mounting plate to move up a certain distance, so that the rake teeth intermittently avoid getting stuck on the rake teeth, avoid uneven distribution of stones in the concrete, and ensure the strength and quality of the road surface. The road surface smoothing and the rake teeth avoidance can be carried out simultaneously without setting an additional power drive device. Attached Figure Description

[0021] Figure 1 This is a top view of a road surface paving device for municipal highway bridge construction provided by the present invention.

[0022] Figure 2 This is a side view of a road surface paving device for municipal highway bridge construction provided by the present invention;

[0023] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 This is a front structural schematic diagram of a road surface paving device for municipal highway bridge construction provided by the present invention.

[0025] In the diagram, 1 is the track beam, 2 is the cross plate, 3 is the traveling wheel set, 4 is the steering shaft, 5 is the paving plate, 6 is the flow divider plate, 7 is the screed plate, 8 is the fixed shaft, 9 is the baffle plate, 10 is the rack, 11 is the bracket, 12 is the clock spring, 13 is the gear, 14 is the pulley, 15 is the belt, 16 is the mounting plate, 17 is the rake tooth, 18 is the guide rod, 19 is the spring, 20 is the reciprocating threaded rod, 21 is the nut, 22 is the connecting rod, 23 is the protruding ridge, and 24 is the limiting groove. Detailed Implementation

[0026] The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0027] like Figure 1-4 As shown, a road surface paving device for municipal highway bridge construction includes two track beams 1 symmetrically laid on both sides of the road. A cross plate 2 is mounted on the two track beams 1. A set of traveling wheels 3 that cooperates with the track beams 1 is installed at the bottom of the cross plate 2. The cross plate 2 is driven to travel along the track beams 1 by the set of traveling wheels 3.

[0028] A steering shaft 4 is provided at the front end of the horizontal plate 2. A paving plate 5 is fixed at the lower end of the steering shaft 4. The paving plate 5 is spliced ​​together from a diversion plate 6 and two smearing plates 7 respectively fixed on both sides of the diversion plate 6. The diversion plate 6 has a forward-arching conical structure in the middle. A fixed shaft 8 is rotatably connected to the horizontal plate 2. The paving plate 5 is connected to the fixed shaft 8 through a gear transmission assembly. When there is a difference in the amount of concrete accumulation at the front end of the two smearing plates 7, the paving plate 5 is moved horizontally to the side with more concrete accumulation, so that the concrete is evenly distributed to both sides of the road.

[0029] The gear transmission assembly includes a rack 10 that is slidably connected to the upper surface of the cross plate 2 and parallel to the road width direction. Specifically, a limiting groove 24 is provided on the upper surface of the cross plate 2, and a ball is embedded in the side wall of the limiting groove 24. The rack 10 is slidably engaged in the limiting groove 24. The ball is used to reduce the sliding resistance of the rack 10 in the limiting groove 24. A bracket 11 is fixedly connected to the rack 10. The steering shaft 4 is rotatably connected to the bracket 11 through a spring 12. When the spring 12 is in its natural state, the diverter 6 is located in the middle of the road. A gear 13 is fixed on the fixed shaft 8. The gear 13 meshes with the rack 10. Pulleys 14 are fixed at the upper ends of both the steering shaft 4 and the fixed shaft 8. The two pulleys 14 are connected by a belt 15. The belt 15 is made of elastic material. When the distance between the two pulleys 14 changes, the belt 15 can stretch and deform, and can always maintain the transmission effect between the two pulleys 14.

[0030] When the amount of concrete piled up at the front of the screed plates 7 on both sides of the diverter plate 6 is uneven, the screed plate 7 with more concrete piled up will encounter greater resistance as it moves along the road surface. In this case, the paving plate 5 will drive the steering shaft 4 to deflect at a certain angle toward the side with more concrete piled up, which in turn will drive the fixed shaft 8 to rotate. Through the gear 13 and rack 10, the paving plate 5 will move a certain distance toward the side with more concrete piled up. Through the diversion effect of the diverter plate 6, the concrete piled up in the middle of the road surface will be evenly distributed to the side with less concrete piled up in front of the paving plate until the amount of concrete piled up in front of the two screed plates 7 is the same, which achieves the effect of automatic adjustment and uniform diversion, and ensures the smoothness of the road surface.

[0031] Baffles 9 are fixed to the bottom surfaces at both ends of the horizontal plate 2. The baffles 9 are used to prevent concrete on the road surface from splashing onto the walking wheel sets 3 and track beams 1 on both sides.

[0032] It also includes a leveling assembly, which includes a mounting plate 16 arranged parallel to the bottom of the horizontal plate 2. The bottom surface of the mounting plate 16 is evenly distributed with rake teeth 17, which are rotatably connected to the mounting plate 16. Two guide rods 18 are fixed on the upper surface of the mounting plate 16. The guide rods 18 are slidably connected to the horizontal plate 2. A spring 19 is sleeved on the guide rod 18, and the two ends of the spring 19 are respectively connected to the horizontal plate 2 and the mounting plate 16.

[0033] The rake teeth 17 move in the concrete road surface, which can reduce the air bubbles in the concrete. The rake teeth 17 can rotate freely at the bottom of the mounting plate 16. When the rake teeth 17 come into contact with the stones in the concrete, the rake teeth 17 can rotate to avoid pushing the stones and ensure that the stones are evenly distributed in the concrete.

[0034] The rake teeth 17 adopt a conical structure, and several protruding ridges 23 are evenly distributed on the side wall of the rake teeth 17 along its length direction. The protruding ridges 23 can further improve the bubble-breaking ability of the rake teeth 17 and increase the frictional resistance between the rake teeth 17 and the stones, so that the rake teeth 17 can rotate and avoid the stones after contacting them.

[0035] A reciprocating threaded rod 20 is coaxially fixed to the lower end of the fixed shaft 8. A nut 21 is threaded onto the reciprocating threaded rod 20. The nut 21 is fixedly connected to the mounting plate 16 through the connecting rod 22.

[0036] When the fixed shaft 8 rotates, it can drive the mounting plate 16 to move upward a certain distance, so that the rake teeth 17 intermittently move upward to avoid larger stones from getting stuck on the rake teeth 17, avoid uneven distribution of stones in the concrete, and ensure the strength and quality of the road surface. The smoothing of the road surface and the avoidance of the rake teeth 17 can be carried out simultaneously without the need for an additional power drive device.

[0037] In this embodiment, the installation height of the horizontal plate 2 is 0.5-0.6m from the road surface, the installation height of the mounting plate 16 is 0.25-0.35m from the road surface, and the length of the rake teeth 17 is 0.35m.

[0038] The working principle of this invention is as follows:

[0039] Two track beams 1 are laid on both sides of the road along the length of the road to be paved. Two sets of walking wheels 3 at both ends of the cross plate 2 are respectively mounted on the two track beams 1. The cross plate 2 is driven to walk along the track beams 1 by the walking wheels 3, which drives the paving plate 5 to move forward on the road. The concrete accumulated in the middle of the road is dispersed to both sides by the diversion plate 6, and the concrete is smoothed by the smearing plates 7 on both sides.

[0040] When the amount of concrete piled up at the front of the slabs 7 on both sides of the diverter plate 6 is uneven, the slab 7 with more concrete piled up will encounter greater resistance as it moves along the road surface. In this case, the paving plate 5 will drive the steering shaft 4 to deflect at a certain angle toward the side with more concrete piled up. Through the transmission action of the pulley 14 and the belt 15, the steering shaft 4 will drive the fixed shaft 8 to rotate synchronously. Since the gear 13 and the rack 10 are meshed with each other, when the fixed shaft 8 drives the gear 13 to rotate, it will drive the rack 10 to slide in the limiting groove 24, thereby driving the paving plate 5 to move a certain distance toward the side with more concrete piled up. Through the diversion action of the diverter plate 6, the concrete piled up in the middle of the road surface will be evenly distributed to the side with less concrete piled up in front of the paving plate until the amount of concrete piled up in front of the two slabs 7 is the same, which will achieve the effect of automatic adjustment and even diversion, and ensure the smoothness of the road surface.

[0041] The horizontal plate 2 drives the rake teeth 17 to move on the road surface, which can reduce the air bubbles in the concrete. The rake teeth 17 can rotate freely at the bottom of the mounting plate 16. When the rake teeth 17 come into contact with the stones in the concrete, the rake teeth 17 can rotate to avoid pushing the stones to move, thus ensuring that the stones are evenly distributed in the concrete.

[0042] When the fixed shaft 8 rotates, it can drive the mounting plate 16 to move upward a certain distance, so that the rake teeth 17 intermittently move upward to avoid larger stones from getting stuck on the rake teeth 17, avoid uneven distribution of stones in the concrete, and ensure the strength and quality of the road surface. The smoothing of the road surface and the avoidance of the rake teeth 17 can be carried out simultaneously without the need for an additional power drive device.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A road surface paving device for municipal highway bridge construction, comprising two track beams (1) symmetrically laid on both sides of the road, a cross plate (2) mounted on the two track beams (1), and a set of traveling wheels (3) cooperating with the track beams (1) installed at the bottom of the cross plate (2), characterized in that: The front end of the horizontal plate (2) is provided with a steering shaft (4), and the lower end of the steering shaft (4) is fixed with a paving plate (5). The paving plate (5) is spliced ​​together by a diversion plate (6) and two smearing plates (7) respectively fixed on both sides of the diversion plate (6). The middle part of the diversion plate (6) has a forward-arching conical structure. The horizontal plate (2) is rotatably connected with a fixed shaft (8). The paving plate (5) is connected to the fixed shaft (8) through a gear transmission assembly. When there is a difference in the amount of concrete accumulation at the front end of the two smearing plates (7), the paving plate (5) is moved horizontally to the side with more concrete accumulation, so that the concrete is evenly distributed to both sides of the road surface. The gear transmission assembly includes a rack (10) that is slidably connected to the upper surface of the cross plate (2) and parallel to the road width direction. A bracket (11) is fixedly connected to the rack (10). The steering shaft (4) is rotatably connected to the bracket (11) through a spring (12). A gear (13) is fixed on the fixed shaft (8). The gear (13) meshes with the rack (10). A pulley (14) is fixed at the upper end of both the steering shaft (4) and the fixed shaft (8). The two pulleys (14) are connected by a belt (15). It also includes a leveling assembly, which includes a mounting plate (16) arranged parallel to the bottom of the horizontal plate (2). The bottom surface of the mounting plate (16) is evenly distributed with rake teeth (17). The rake teeth (17) are rotatably connected to the mounting plate (16). Two guide rods (18) are fixed on the upper surface of the mounting plate (16). The guide rods (18) are slidably connected to the horizontal plate (2). A spring (19) is sleeved on the guide rod (18). The two ends of the spring (19) are respectively connected to the horizontal plate (2) and the mounting plate (16). The lower end of the fixed shaft (8) is coaxially fixed with a reciprocating threaded rod (20), and a nut (21) is threaded onto the reciprocating threaded rod (20). The nut (21) is fixedly connected to the mounting plate (16) through a connecting rod (22).

2. The road surface paving device for municipal highway bridge construction according to claim 1, characterized in that, Both ends of the horizontal plate (2) are fixed with baffles (9).

3. The road surface paving device for municipal highway bridge construction according to claim 1, characterized in that, The rake teeth (17) have a conical structure, and the sidewalls of the rake teeth (17) are evenly distributed with a number of protruding ridges (23) arranged along their length.

4. The road surface paving device for municipal highway bridge construction according to claim 1, characterized in that, The horizontal plate (2) is installed at a height of 0.5-0.6m from the road surface, the mounting plate (16) is installed at a height of 0.25-0.35m from the road surface, and the length of the rake teeth (17) is 0.35m.

5. The road surface paving device for municipal highway bridge construction according to claim 1, characterized in that, A limiting groove (24) is provided on the upper surface of the horizontal plate (2), and a ball is embedded in the side wall of the limiting groove (24). The rack (10) is slidably engaged in the limiting groove (24).

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