Pavement gravel laying device

Abstract

The utility model belongs to the technical field of road asphalt pavement maintenance, and particularly relates to a pavement gravel paving device which comprises a walking device and a gravel placing box, the gravel placing box is arranged on the walking device, a discharging port is formed in the lower side of the gravel placing box, an adjusting plate is movably arranged on at least one side of the discharging port, and the adjusting plate is arranged on the walking device. And the walking device comprises two walking rollers which are arranged at intervals, the two walking rollers are rotationally arranged on the lower side of the gravel containing box, the walking rollers are arranged in a hollow mode, and at least one walking roller is connected with a rotation driving device. When the device is used, the device is pushed or pulled, manual sand and stone laying is not needed, manpower is reduced, the working efficiency of road laying is improved, the walking roller is hollow, the gravity of the device can be dispersed through the hollow arrangement, the contact area of the walking roller and the ground is large, indentation cannot be generated on the road surface, and asphalt adhesion and difficulty in cleaning are prevented.

Description

Technical Field

[0001] This utility model belongs to the field of highway asphalt pavement maintenance technology, specifically relating to a pavement sand and gravel paving device. Background Technology

[0002] Asphalt pavement is one of the most widely used high-grade pavements in road construction. Generally, asphalt pavement refers to a pavement constructed by mixing road asphalt material into sand and gravel. The combination of asphalt and sand and gravel keeps the pavement in good condition. Generally, when maintaining highway pavement, a layer of asphalt needs to be laid first, and then sand and gravel are laid on top of the asphalt.

[0003] In existing technologies, large equipment is used for the paving or repair of large roads. For the repair of small roads, a layer of asphalt is usually applied manually to the area to be repaired, and then a layer of gravel is laid manually. The manual laying of gravel not only increases the labor required, but also results in uneven thickness of the gravel, making the road repair and maintenance inefficient and producing poor results. Although there are small gravel laying devices in existing technologies, these devices are complex in structure and heavy. During the laying of gravel, they are prone to pressing indentations into the applied asphalt, or even asphalt sticking to the surface, affecting the normal operation of the device. Furthermore, asphalt is difficult to clean. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a road surface gravel paving device that automatically lays gravel, saves manpower and labor, and lays gravel with uniform thickness and good repair effect.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a road surface gravel paving device, including a walking device and a gravel placement box. The gravel placement box is installed on the walking device, and a discharge port is provided on the lower side of the gravel placement box. An adjusting plate is movably provided on at least one side of the discharge port. The walking device includes two walking rollers arranged at intervals. The two walking rollers are rotatably arranged on the lower side of the gravel placement box, and the walking rollers are hollow. At least one walking roller is connected to a rotation drive device.

[0006] Preferably, the adjusting plate is provided with several elongated holes, and the sand and gravel placement box on one side of the discharge port is provided with several bolt holes. The fixing bolt passes through the elongated holes and bolt holes and is fixed by nuts.

[0007] Preferably, a laying conveyor belt is provided below the discharge port of the sand and gravel placement box, and a conveying roller shaft is wound around each end of the laying conveyor belt. The two sides of the sand and gravel placement box are two supporting side plates, and the two ends of the two conveying roller shafts are rotatably connected to the two supporting side plates. One of the conveying roller shafts is connected to a rotation drive device, and the laying conveyor belt is set above the walking device.

[0008] Preferably, the rotation drive device is a motor, which is fixedly installed on the side of the sand and gravel placement box. A synchronous pulley is provided at the output end of the motor and at one end of a conveying roller shaft. The two synchronous pulleys are connected by a synchronous chain or synchronous belt.

[0009] Preferably, a travel shaft is provided in the middle of the travel roller, and the two ends of the travel shaft are rotatably connected to the lower side of the support side plate. A synchronous pulley is also provided at one end of the travel shaft of at least one travel roller. The synchronous chain or synchronous belt passes over the output shaft of the motor, the conveying roller shaft and the synchronous pulley at one end of the travel shaft.

[0010] Preferably, a stirring shaft is provided in the sand and gravel placement box, with both ends of the stirring shaft rotatably mounted on two support side plates, and one end of the stirring shaft is connected to any conveying roller shaft via a synchronous chain or synchronous belt.

[0011] Preferably, both ends of the conveying roller shaft are rotatably mounted on the support side plate via bearing seats, and the bearing seats at both ends of the other conveying roller shaft are adjustablely mounted on the two support side plates via tensioning components.

[0012] Preferably, an adjustable elongation hole is provided on the support side plate, and the bearing seats at both ends of the other conveying roller shaft are fixedly installed in the adjustable elongation hole by bolts. The tensioning assembly includes a tensioning block, a tensioning screw and a fixing nut. The tensioning block is fixedly installed on the support side plate, the tensioning screw passes through the tensioning block and is fixedly connected to the bearing seat, and the fixing nut is threadedly connected to the tensioning screw. The fixing nut is located on the side of the tensioning block away from the bearing seat.

[0013] Preferably, a push handle is fixedly provided at the front or rear end of the sand and gravel placement box.

[0014] Compared with existing technologies, the above technical solution has the following beneficial effects:

[0015] 1. This utility model features a sand and gravel placement box. After a layer of asphalt is manually applied to the ground, the device is pushed along the asphalt. A discharge port is provided at the lower end of the sand and gravel placement box, allowing sand and gravel to fall and form a layer on top of the asphalt. During use, the device can be pushed or pulled, eliminating the need for manual sand and gravel laying, thus reducing labor costs and improving road paving efficiency. The hollow design of the traveling roller helps to distribute the weight of the device, and the large contact area between the traveling roller and the ground prevents indentations on the road surface and prevents asphalt from sticking and becoming difficult to clean. Furthermore, this utility model has an adjustment plate on at least one side of the discharge port of the sand and gravel placement box. Adjusting the plate changes the size of the discharge port, allowing for adjustment of the sand and gravel flow rate according to actual working conditions, resulting in better construction.

[0016] 2. The sand and gravel storage box is equipped with a stirring shaft, which continuously stirs the sand and gravel to prevent them from getting stuck and unable to fall.

[0017] 3. A laying conveyor belt is installed below the sand and gravel placement box. The sand and gravel first fall onto the laying conveyor belt and then fall onto the construction road surface from the conveyor belt end, making the sand and gravel land more stably and spreading the sand and gravel more evenly. In addition, one of the conveyor rollers of the laying conveyor belt is adjustablely installed on the support side plate, which can adjust the tension of the laying conveyor belt.

[0018] 4. The stirring shaft, conveying roller shaft, traveling roller, and motor output shaft are all connected by synchronous belts or synchronous chains. Only one motor is needed to drive the stirring shaft, conveying roller shaft, and traveling roller to rotate simultaneously, saving power. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the adjustment plate.

[0021] Figure 3 This is a top view of the present invention.

[0022] Figure 4 for Figure 1 Enlarged view of point A in the middle.

[0023] Figure 5 This is a cross-sectional view of the present invention.

[0024] Figure 6 This is a schematic diagram of the structure on the other side of this utility model.

[0025] The components include: 1. Sand and gravel placement box; 2. Support side plate; 3. Push handle; 4. Walking roller; 5. Walking shaft; 6. Laying conveyor belt; 7. Conveying roller shaft; 8. Synchronous wheel; 9. Transmission synchronous chain; 10. Bearing seat; 11. Tensioning block; 12. Tensioning screw; 13. Adjusting plate; 14. Mixing shaft; 15. Electrical box; 16. Controller; 17. Fixing bolt; 18. Motor; 19. Mixing synchronous chain; 20. Brake assembly; 21. Long hole; 22. Fixing nut. Detailed Implementation

[0026] Figures 1-6 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-6 The present invention will be further described below.

[0027] like Figure 1As shown, this utility model discloses a road surface gravel paving device, including a walking device and a gravel placement box 1. The gravel placement box 1 is mounted on the walking device, and the supporting side plates 2 serve as the side plates of the gravel placement box 1. The walking device is mounted on two supporting side plates 2. Construction workers push the device, and the walking device rolls and drives the device to move. Alternatively, the walking device is connected to a drive device, and the drive device drives the walking device to move. After manually applying a layer of asphalt to the ground, the device is pushed along the asphalt. A discharge port is provided at the lower end of the gravel placement box 1, and gravel falls onto the asphalt to lay a layer of gravel. A discharge port is provided on the lower side of the gravel placement box 1, and an adjustable plate 13 is provided on at least one side of the discharge port. The size of the discharge port can be changed by adjusting the plate 13, and the flow rate of the gravel can be adjusted according to the actual working conditions. The walking device consists of two walking rollers 4 spaced apart. The two ends of the walking rollers 4 are rotatably connected to two support side plates 2. At least one walking roller 4 is connected to a rotation drive device. The walking rollers 4 are hollow, which can distribute the weight of the device and prevent it from creating indentations on the road surface.

[0028] like Figures 2-3 As shown, in this embodiment, an adjusting plate 13 is provided on one side of the discharge port. The sand and gravel placement box 1 has side walls at both the front and rear ends of the device. Here, the front end refers to the front end in the running direction of the device. The two side walls and two supporting side plates 2 constitute the sand and gravel placement box 1. The adjusting plate 13 is adjustablely connected to the lower side of either side wall. An inclined plate is fixedly provided on the lower side of the other side wall. The lower end of the inclined plate and the lower end of the adjusting plate 13 form the discharge port. Specifically, several elongated holes 21 are provided on the adjusting plate 13, and several bolt holes are correspondingly provided on the sand and gravel placement box 1 on one side of the discharge port. The fixing bolts 17 pass through the elongated holes 21 and the bolt holes and are fixed by nuts. When it is necessary to reduce the size of the discharge port, the nuts are loosened, so that the adjusting plate 13 moves downward along the elongated holes 21. After moving to a suitable position, the nuts are tightened again, thus reducing the size of the discharge port. If it is necessary to increase the size of the discharge port, the adjusting plate 13 is moved upward.

[0029] A laying conveyor belt 6 is installed below the discharge port of the sand and gravel placement box 1. The sand and gravel first fall onto the laying conveyor belt 6, and then fall onto the construction road surface from the conveying end of the laying conveyor belt 6, so that the sand and gravel land more stably and the sand and gravel are laid more evenly. A conveying roller shaft 7 is installed at each end of the laying conveyor belt 6. The conveying roller shaft 7 of the laying conveyor belt 6 is rotatably mounted on the support side plate 2. One of the conveying roller shafts 7 is connected to a rotation drive device, which drives the conveying roller shaft 7 to rotate, so that the laying conveyor belt 6 rotates around the two conveying roller shafts 7 to transport the sand and gravel.

[0030] In this embodiment, the rotation drive device is a motor 18, which is fixedly installed on the rear side of the sand and gravel placement box 1. A synchronous pulley 8 is provided at the output end of the motor 18 and at one end of the conveyor roller shaft 7. The two synchronous pulleys 8 are connected by a synchronous chain or synchronous belt. In this embodiment, the synchronous pulley 8 is a sprocket. The motor 18 drives the conveyor roller shaft 7 to rotate via the synchronous chain, causing the laying conveyor belt 6 to transport sand and gravel. In this embodiment, a synchronous pulley 8 is also provided at one end of the traveling shaft 5 of any traveling roller 4. The transmission synchronous chain 9 simultaneously passes around the output shaft of the motor 18, the conveyor roller shaft 7, and the synchronous pulley 8 at one end of the traveling shaft 5. The motor 8 and the transmission synchronous chain 9 serve as the rotation drive device for the traveling roller 4. When the output shaft of the motor 8 rotates, the conveyor roller shaft 7 and the traveling shaft 5 rotate synchronously, driving the laying conveyor belt 6 and the traveling roller 4 to rotate, thus moving the device. A brake assembly 20 is also provided at one end of one of the traveling rollers 4.

[0031] like Figure 4 As shown, both ends of the conveyor roller shaft 7 are rotatably mounted on the support side plate 2 via bearing seats 10. The bearing seats 10 at both ends of the other conveyor roller shaft 7 are adjustablely mounted on the two support side plates 2 via tensioning components. The position of the conveyor roller shaft 7 is adjusted by adjusting the position of the bearing seats 10, thereby adjusting the tension of the laying conveyor belt 6. In this embodiment, the conveyor roller 7 without a synchronous pulley 8 is adjustable. An adjustable elongated hole is provided on the support side plate 2. The bearing seats 10 at both ends of the adjustable conveyor roller 7 are fixedly installed in the adjustable elongated hole by bolts. The tensioning assembly includes a tensioning block 11, a tensioning screw 12, and a fixing nut 22. The tensioning block 11 is fixedly installed on the support side plate 2. The tensioning screw 12 passes through the tensioning block 11 and is fixedly connected to the bearing seat 10. The fixing nut 22 is threadedly connected to the tensioning screw 12. The fixing nut 22 is located on the side of the tensioning block 11 away from the bearing seat 10. When it is necessary to adjust the conveyor roller 7, the bolts of the fixing bearing seat 10 are loosened, and then the fixing nut 22 is rotated, so that the tensioning screw 12 drives the adjustable conveyor roller 7 to move closer to or away from the other conveyor roller 7, thereby adjusting the tension of the laying conveyor belt 6.

[0032] like Figures 5-6As shown, a stirring shaft 14 is installed in the sand and gravel placement box 1. The two ends of the stirring shaft 14 are rotatably mounted on two support side plates 2. The end of the stirring shaft 14 away from the transmission synchronous chain 19 is connected to any conveying roller shaft 7 through a synchronous chain or synchronous belt. A synchronous wheel 8 is also provided at the other end of the conveying roller shaft 7 connected to the transmission synchronous chain 19. A synchronous wheel 8 is also provided at the same end of the stirring shaft 14. The stirring synchronous chain 19 is wound around the synchronous wheel 8 of the conveying roller shaft 7 and the synchronous wheel 8 of the stirring shaft 14. When the conveying roller shaft 7 rotates, the stirring shaft 14 also rotates synchronously. Therefore, only one motor 18 is needed to drive the stirring shaft 14, the conveying roller shaft 7 and the traveling roller 4 to rotate simultaneously, saving power.

[0033] A push handle 3 is fixedly installed at the front or rear end of the sand and gravel placement box 1. In this embodiment, the push handle 3 is fixedly installed at the rear end of the sand and gravel placement box 1. An electrical box 15 is also installed on one side of the sand and gravel placement box 1. A controller 16 is also installed on the push handle 3. The start and stop of the device can be controlled by the controller 16.

[0034] In use, the construction personnel first apply a layer of asphalt to the road surface requiring maintenance, move the device to the location, start the motor 18, and the output end of the motor 18 rotates. The conveying roller 7, the mixing shaft 14, and the traveling roller 4 rotate simultaneously. The device moves along the road surface, while sand and gravel fall from the sand and gravel placement box 1 onto the laying conveyor belt 6. The laying conveyor belt 6 then evenly spreads the sand and gravel on top of the asphalt on the road surface. After the sand and gravel fall onto the asphalt, the traveling roller 4 presses over the sand and gravel. There is no need for manual sand and gravel laying, which reduces labor and improves the efficiency of road paving. In addition, the present invention has an adjusting plate 13 on one side of the discharge port of the sand and gravel placement box 1. When it is necessary to reduce the discharge port size, the nut is loosened, and the adjusting plate 13 moves downward along the elongated hole 21. After moving to the appropriate position, the nut is tightened again, thus reducing the size of the discharge port. If it is necessary to increase the size of the discharge port size, the adjusting plate 13 is moved upward. The flow rate of sand and gravel can be adjusted according to the actual working conditions for better construction.

[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its scope of protection shall still fall within the protection scope of this utility model.

Claims

1. A road surface gravel paving device, characterized in that: The device includes a walking device and a sand and gravel placement box (1). The sand and gravel placement box (1) is mounted on the walking device. A discharge port is provided on the lower side of the sand and gravel placement box (1). An adjusting plate (13) is movably provided on at least one side of the discharge port. The walking device includes two walking rollers (4) spaced apart. Both walking rollers (4) are rotatably mounted on the lower side of the sand and gravel placement box (1). The walking rollers (4) are hollow. At least one walking roller (4) is connected to a rotation drive device.

2. The road surface gravel paving device according to claim 1, characterized in that: A number of elongated holes (21) are provided on the adjusting plate (13), and a number of bolt holes are provided on the sand and gravel placement box (1) on one side of the discharge port. The fixing bolt (17) passes through the elongated holes (21) and the bolt holes and is fixed by a nut.

3. The road surface gravel paving device according to claim 1, characterized in that: A laying conveyor belt (6) is provided below the discharge port of the sand and gravel placement box (1). A conveying roller shaft (7) is wound around each end of the laying conveyor belt (6). The two sides of the sand and gravel placement box (1) are two supporting side plates (2). The two ends of the two conveying roller shafts (7) are rotatably connected to the two supporting side plates (2). One of the conveying roller shafts (7) is connected to a rotation drive device.

4. A road surface gravel paving device according to claim 3, characterized in that: The rotation drive device is a motor (18), which is fixedly installed on the side of the sand and gravel placement box (1). A synchronous wheel (8) is provided at the output end of the motor (18) and at one end of a conveying roller shaft (7). The two synchronous wheels (8) are connected by a synchronous chain or a synchronous belt.

5. A road surface gravel paving device according to claim 4, characterized in that: A walking shaft (5) is provided in the middle of the walking roller (4). The two ends of the walking shaft (5) are rotatably connected to the lower side of the support side plate (2). A synchronous wheel (8) is also provided at one end of the walking shaft (5) of at least one walking roller (4). The synchronous chain or synchronous belt passes around the output shaft of the motor (18), the conveying roller shaft (7), and the synchronous wheel (8) at one end of the walking shaft (5).

6. A road surface gravel paving device according to claim 3, characterized in that: A stirring shaft (14) is provided in the sand and gravel placement box (1). The two ends of the stirring shaft (14) are rotatably mounted on two support side plates (2). One end of the stirring shaft (14) is connected to any conveying roller shaft (7) through a synchronous chain or synchronous belt.

7. A road surface gravel paving device according to claim 3, characterized in that: Both ends of the conveying roller shaft (7) are rotatably mounted on the support side plate (2) via bearing seats (10), and the bearing seats (10) at both ends of the other conveying roller shaft (7) are adjustablely mounted on the two support side plates (2) via tensioning components.

8. A road surface gravel paving device according to claim 7, characterized in that: An adjustable elongation hole is provided on the support side plate (2). The bearing seats (10) at both ends of the other conveying roller shaft (7) are fixedly installed in the adjustable elongation hole by bolts. The tensioning assembly includes a tensioning block (11), a tensioning screw (12) and a fixing nut (22). The tensioning block (11) is fixedly installed on the support side plate (2). The tensioning screw (12) passes through the tensioning block (11) and is fixedly connected to the bearing seat (10). The fixing nut (22) is threadedly connected to the tensioning screw (12). The fixing nut (22) is located on the side of the tensioning block (11) away from the bearing seat (10).

9. A road surface gravel paving device according to claim 1, characterized in that: A push handle (3) is fixedly installed at the front or rear end of the sand and gravel placement box (1).

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