A device for spreading a crushed stone cushion

Abstract

The utility model relates to the technical field of broken stone paving technology, concretely is a broken stone cushion paving device, including the fixed frame, is equipped with the storage cavity in the fixed frame, the bottom fixed setting of fixed frame in storage cavity has the arc cover, the below slanting fixed setting of fixed frame in arc cover has the guide plate, the lateral wall of fixed frame is equipped with the discharge gate, rotates and is provided with the pivot in the storage cavity, is fixedly arranged with the spiral blade on the pivot, the outer wall fixed setting of fixed frame is away from motor one side has the collection box, the lateral wall of fixed frame is equipped with the classification mouth that links together storage cavity and collection box, when carrying out broken stone paving operation, the pivot drives the spiral blade to push the broken stone in the arc cover, wherein the smaller broken stone falls by the screening hole of arc cover, the bigger broken stone is collected by the spiral blade and pushes to the storage box, has improved the collection efficiency to the bigger broken stone.

Description

Technical Field

[0001] This application relates to the field of crushed stone paving technology, specifically a crushed stone subbase paving device. Background Technology

[0002] When constructing pedestrian walkways, it is usually necessary to lay crushed stone on the roadbed. After the crushed stone layer is laid, it is compacted to make the road surface flat. Then, paving construction is carried out on the basis of the crushed stone layer to improve the strength of the roadbed. In order to spread the crushed stone evenly on the road surface, a paving device is required when laying the crushed stone.

[0003] A utility model patent with publication number CN222862007U discloses a crushed stone paving device for municipal road construction, including a support frame and a paving mechanism. The paving mechanism includes a material feeding frame and a scraper. A filter grid is fixedly installed on the left side of the material feeding frame, and mounting plates are fixedly installed on both sides of the left end of the material feeding frame. Through the paving mechanism, the crushed stone slides down the material feeding frame, and larger pieces of crushed stone are intercepted by the filter grid, avoiding the problem of large pieces of crushed stone falling onto the road surface and causing uneven paving. Workers can stand on the operating frame to clean the crushed stone clogging the filter grid in real time. By adjusting the extension and contraction of the spring in the telescopic groove, the height of the scraper above the ground can be adjusted, making it convenient to pave crushed stone of different thicknesses. The "V"-shaped stone-dispersing plate can push excess crushed stone to both sides, preventing excess crushed stone from accumulating in the middle and improving the flexibility of crushed stone paving.

[0004] In the aforementioned device, when the crushed stone is being laid, the crushed stone slides down from the pouring frame. Larger crushed stones are intercepted by the filter grid. Workers process the intercepted crushed stone. However, after the crushed stone is poured into the pouring frame, the crushed stone sliding down the pouring frame will continuously collide with the intercepted crushed stone, causing it to shake continuously at the bottom of the pouring frame. Manual cleaning is tedious and inefficient. Utility Model Content

[0005] To address the problem of low efficiency in cleaning larger stones in existing technologies, this utility model provides a stone cushion layer paving device.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] This utility model provides a crushed stone subbase paving device, characterized in that it includes:

[0008] A fixed frame is provided, which has a storage cavity. An arc-shaped cover is fixedly installed at the bottom of the storage cavity. Multiple sets of screening holes are spaced apart along the length of the bottom of the arc-shaped cover. A guide plate is fixedly installed at an angle below the arc-shaped cover. The side wall of the fixed frame has a discharge port that connects to the bottom of the guide plate. A rotating shaft is rotatably installed in the storage cavity. A spiral blade is fixedly installed on the rotating shaft. The outer edge of the spiral blade abuts against the inner wall of the arc-shaped cover. A motor is fixedly installed on the side wall of the fixed frame. The output shaft of the motor is connected to one end of the rotating shaft. A collection box is fixedly installed on the outer wall of the fixed frame away from the motor. A sorting port connecting the storage cavity and the collection box is provided on the side wall of the fixed frame.

[0009] It also includes a pressing mechanism, which is mounted on a fixed frame.

[0010] Preferably, the pressing mechanism includes a mounting plate, a fixed rod, a connecting rod, and a pressure plate. The mounting plate is fixedly installed on the outer wall of the fixed frame and located above the discharge port. The fixed rod is located on the top of the mounting plate. Multiple sets of connecting rods are fixedly installed at intervals at the bottom of the fixed rod. The mounting plate has round holes that mate with the connecting rods. The pressure plate is located below the mounting plate and connected to the bottom of the connecting rod. The fixed frame is equipped with a drive unit. After the crushed stone falls from the discharge port onto the foundation, the worker drives the fixed rod above the mounting plate to reciprocate vertically using the drive unit. When the fixed rod rises and falls, it drives the connecting rod and the pressure plate to rise and fall, thereby initially flattening the crushed stone that has fallen onto the roadbed through the pressure plate, improving construction efficiency.

[0011] Preferably, a rod is fixedly installed on the top of the pressure plate, and a countersunk hole is provided at the bottom of the connecting rod to match the rod. A spring is embedded in the countersunk hole at the upper part of the rod, and the two ends of the spring are connected to the rod and the connecting rod respectively. When the connecting rod drives the pressure plate to flatten the gravel, after the bottom of the pressure plate comes into contact with the gravel, the connecting rod will compress the spring in the countersunk hole as it continues to descend. The compressed spring will squeeze the rod and the pressure plate at the bottom, thereby further flattening the gravel below. In addition, the spring can protect the drive mechanism and prevent the gravel in some areas from being too high and causing damage to the drive mechanism when flattening.

[0012] Preferably, the drive unit includes a second motor, a disc, a protrusion, and a fixing block. A fixing block is fixedly mounted on the top of the fixing rod, and the fixing block has a sliding groove along its transverse direction. A disc is rotatably mounted on the side wall of the fixing frame, and a protrusion is fixedly mounted on the outer edge of the disc near the fixing block. One end of the protrusion is slidably mounted in the sliding groove. A second motor is fixedly mounted on the fixing frame, and the output shaft of the second motor is connected to one end of the disc for transmission. When it is necessary to drive the fixing rod to move vertically, the operator starts the second motor. The output shaft of the second motor drives the disc to rotate, which in turn drives the protrusion to rotate. During the rotation of the protrusion, it slides along the sliding groove of the fixing block, thereby pushing the fixing block on the fixing rod. The fixing block drives the fixing rod to move vertically back and forth, improving work efficiency.

[0013] Preferably, a set of inclined plates are fixedly installed on both sides of the inner wall of the storage cavity. The top of the arc-shaped cover is fixedly connected to the bottom of the inclined plates. After the crushed stone is poured into the storage cavity, the crushed stone will fall along the surface of the inclined plates to the arc-shaped groove at the bottom, which facilitates the transportation of the crushed stone.

[0014] Preferably, the collection box is provided with a collection trough, the bottom of the collection trough is inclined, and the side wall of the fixing frame near the bottom of the collection trough is provided with a through hole, which is connected to the top surface of the guide plate. After the gravel enters the collection box through the sorting port, it will slide down the inclined bottom surface. Among them, the smaller gravel can enter the guide plate through the through hole, ensuring the normal utilization of the gravel.

[0015] Preferably, a traction frame is fixedly installed on the side of the fixed frame away from the mounting plate. External traction equipment can be connected to the fixed frame through the traction frame, thereby driving the fixed frame to move along the road to achieve continuous gravel paving operation.

[0016] The advantages of adopting the above technical solution are:

[0017] This utility model includes a fixed frame with a storage cavity inside. An arc-shaped cover is fixedly mounted on the bottom of the storage cavity, and a guide plate is fixedly mounted at an angle below the arc-shaped cover. A discharge port is provided on the side wall of the fixed frame. A rotating shaft is rotatably mounted inside the storage cavity, and a spiral blade is fixedly mounted on the rotating shaft. A collection box is fixedly mounted on the outer wall of the fixed frame away from the motor. A sorting port connecting the storage cavity and the collection box is provided on the side wall of the fixed frame. During the gravel paving operation, the rotating shaft drives the spiral blade to push the gravel in the arc-shaped cover. Smaller gravel falls through the screening holes of the arc-shaped cover, while larger gravel is pushed into the collection box by the spiral blade for collection, thus improving the collection efficiency of larger gravel. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of this utility model is shown;

[0020] Figure 2 A partial cross-sectional view of the present invention is shown;

[0021] Figure 3 A partial cross-sectional view of the present invention is shown;

[0022] Figure 4 A partial cross-sectional view of the present invention is shown;

[0023] Figure 5 A partial cross-sectional view of the present invention is shown.

[0024] The components are as follows: 1. Fixed frame; 100. Traction frame; 101. Storage chamber; 102. Discharge port; 103. Classification port; 104. Through hole; 105. Inclined plate; 2. Arc-shaped cover; 201. Screening hole; 3. Rotating shaft; 301. Spiral blade; 4. Guide plate; 5. Collection box; 501. Collection trough; 6. Mounting plate; 7. Fixed rod; 701. Connecting rod; 702. Fixed block; 703. Slide groove; 8. Pressure plate; 801. Insert rod; 802. Spring; 9. Motor II; 901. Disc; 902. Protrusion. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] like Figure 1-5As shown in the figure, this utility model embodiment discloses a crushed stone cushion layer paving device, including a fixed frame 1 and a pressing mechanism. The fixed frame 1 is provided with a storage cavity 101. An arc-shaped cover 2 is fixedly installed at the bottom of the storage cavity 101. Multiple sets of screening holes 201 are spaced apart along the length direction at the bottom of the arc-shaped cover 2. A guide plate 4 is inclinedly fixedly installed below the arc-shaped cover 2. A discharge port 102 is provided on the side wall of the fixed frame 1, which is connected to the bottom of the guide plate 4. A rotating shaft 3 is rotatably installed in the storage cavity 101. A spiral blade 301 is fixedly installed on the rotating shaft 3. The outer edge of the spiral blade 301 abuts against the inner wall of the arc-shaped cover 2. A motor is fixedly installed on the side wall of the fixed frame 1. The output shaft of the motor is connected to one end of the rotating shaft 3. A collection box 5 is fixedly installed on the outer wall of the fixed frame 1 away from the motor. A sorting port 103 connecting the storage cavity 101 and the collection box 5 is provided on the side wall of the fixed frame 1. The pressing mechanism is provided on the fixed frame 1.

[0027] In at least one embodiment, the pressing mechanism includes a mounting plate 6, a fixing rod 7, a connecting rod 701, and a pressure plate 8. The mounting plate 6 is fixedly installed on the outer wall of the fixing frame 1 and located above the discharge port 102. The fixing rod 7 is installed on the top of the mounting plate 6. The connecting rods 701 are multiple sets and fixedly installed at intervals at the bottom of the fixing rods 7. The mounting plate 6 is provided with round holes that mate with the connecting rods 701. The pressure plate 8 is located below the mounting plate 6 and connected to the bottom of the connecting rods 701. The fixing frame 1 is provided with a drive unit. After the crushed stone falls from the discharge port 102 onto the foundation, the worker drives the fixing rod 7 above the mounting plate 6 to reciprocate vertically through the drive unit. When the fixing rod 7 rises and falls, it drives the connecting rods 701 and the pressure plate 8 to rise and fall, thereby initially flattening the crushed stone that has fallen onto the roadbed through the pressure plate 8, improving construction efficiency. In addition, the multiple sets of connecting rods 701 can stably limit the movement of the fixing rod 7 when it rises and falls.

[0028] In at least one embodiment, a rod 801 is fixedly provided on the top of the pressure plate 8, and a countersunk hole is provided at the bottom of the connecting rod 701 to fit the rod 801. A spring 802 is embedded in the section of the countersunk hole above the rod 801. The two ends of the spring 802 are connected to the rod 801 and the connecting rod 701 respectively. When the connecting rod 701 drives the pressure plate 8 to flatten the gravel, when the bottom of the pressure plate 8 comes into contact with and squeezes the gravel, the connecting rod 701 continues to descend and compresses the spring 802 in the countersunk hole. The compressed spring 802 squeezes the rod 801 and the pressure plate 8 at the bottom, thereby further flattening the gravel below. In addition, the spring 802 can protect the drive mechanism and prevent the gravel in some areas from being too high and causing damage to the drive mechanism when flattening.

[0029] In at least one embodiment, the drive unit includes a second motor 9, a disc 901, a protrusion 902, and a fixing block 702. The fixing block 702 is fixedly mounted on the top of the fixing rod 7. The fixing block 702 has a sliding groove 703 along its transverse direction. The disc 901 is rotatably mounted on the side wall of the fixing frame 1. The protrusion 902 is fixedly mounted on the outer edge of the disc 901 near the fixing block 702. One end of the protrusion 902 is slidably mounted in the sliding groove 703. The second motor 9 is fixedly mounted on the fixing frame 1. The output shaft of the second motor 9 is connected to one end of the disc 901. When it is necessary to drive the fixing rod 7 to move vertically, the operator starts the second motor 9. The output shaft of the second motor 9 drives the disc 901 to rotate, which in turn drives the protrusion 902 to rotate. During the rotation of the protrusion 902, it slides along the sliding groove 703 of the fixing block 702, thereby pushing the fixing block 702 on the fixing rod 7. The fixing block 702 drives the fixing rod 7 to move vertically back and forth, improving work efficiency.

[0030] In at least one embodiment, a set of inclined plates 105 are fixedly provided on both sides of the inner wall of the storage cavity 101 of the fixing frame 1. The top of the arc-shaped cover 2 is fixedly connected to the bottom of the inclined plate 105. After the gravel is poured into the storage cavity 101, the gravel will fall along the surface of the inclined plate 105 to the arc groove at the bottom, which facilitates the transportation of the gravel.

[0031] In at least one embodiment, the collection box 5 is provided with a collection trough 501. The bottom of the collection trough 501 is inclined. The side wall of the fixing frame 1 near the bottom of the collection trough 501 is provided with a through hole 104. The through hole 104 is connected to the top surface of the guide plate 4. After the gravel enters the collection box 5 through the sorting port 103, it will slide down the inclined bottom surface. The smaller gravel carried can enter the guide plate 4 through the through hole 104 to ensure the normal utilization of the gravel.

[0032] In at least one embodiment, a traction frame 100 is fixedly installed on the side of the fixed frame 1 away from the mounting plate 6. An external traction device can be connected to the fixed frame 1 through the traction frame 100, thereby driving the fixed frame 1 to move along the road to achieve continuous gravel paving operation.

[0033] During the paving of the crushed stone layer on the road, crushed stone is continuously poured into the storage chamber 101 from the top of the fixed frame 1. Then, the operator starts the motor on the fixed frame 1 and moves the fixed frame 1 along the roadbed. The motor drives the rotating shaft 3 inside the storage chamber 101 to rotate. When the rotating shaft 3 rotates, it drives the spiral blades 301 to rotate, thereby pushing the crushed stone in the storage chamber 101 along the axial direction of the rotating shaft 3 inside the arc-shaped cover 2. As the spiral blades 301 push the crushed stone, smaller volumes of crushed stone fall through the screening holes 201 at the bottom of the arc-shaped cover 2 down to the guide plate 4, and then slide down along the inclined guide plate 4 to the discharge port 102 and finally fall onto the roadbed. To ensure the uniformity of the volume and size of the crushed stone spread on the roadbed, which facilitates subsequent compaction, larger crushed stones will continuously move towards the collection point at the bottom of the arc-shaped groove as pushed by the spiral blades 301. Finally, the larger crushed stones will fall into the collection box 5 through the sorting port 103 on the side wall of the fixing frame 1. The crushed stones in the collection box 5 can then be cleaned uniformly. Through the continuous rotation of the spiral blades 301, the crushed stones in the storage chamber 101 can be continuously sorted, which improves the cleaning efficiency of larger crushed stones. Furthermore, during the paving process, the pressing mechanism on the fixing frame 1 can initially flatten the crushed stones falling from the discharge port 102, thereby improving the efficiency of road construction.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A macadam mat laying apparatus characterised in that: include A fixed frame is provided, which has a storage cavity. An arc-shaped cover is fixedly installed at the bottom of the storage cavity. Multiple sets of screening holes are spaced apart along the length of the bottom of the arc-shaped cover. A guide plate is fixedly installed at an angle below the arc-shaped cover. The side wall of the fixed frame has a discharge port that connects to the bottom of the guide plate. A rotating shaft is rotatably installed in the storage cavity. A spiral blade is fixedly installed on the rotating shaft. The outer edge of the spiral blade abuts against the inner wall of the arc-shaped cover. A motor is fixedly installed on the side wall of the fixed frame. The output shaft of the motor is connected to one end of the rotating shaft. A collection box is fixedly installed on the outer wall of the fixed frame away from the motor. A sorting port connecting the storage cavity and the collection box is provided on the side wall of the fixed frame. It also includes a pressing mechanism, which is mounted on a fixed frame.

2. A stone mat paving device according to claim 1, wherein: The pressing mechanism includes a mounting plate, a fixing rod, a connecting rod, and a pressure plate. The mounting plate is fixedly installed on the outer wall of the fixed frame and located above the discharge port. The fixing rod is located on the top of the mounting plate. The connecting rods are in multiple sets and are fixedly installed at intervals at the bottom of the fixing rod. The mounting plate has round holes that mate with the connecting rods. The pressure plate is located below the mounting plate and connected to the bottom of the connecting rod. The fixed frame is equipped with a drive unit.

3. A stone mat layer spreading apparatus according to claim 2, characterized in that: The top of the pressure plate is fixedly provided with a plug rod, and the bottom of the connecting rod is provided with a countersunk hole that matches the plug rod. A spring is embedded in the countersunk hole at the upper part of the plug rod, and the two ends of the spring are connected to the plug rod and the connecting rod respectively.

4. A stone mat paving device according to claim 2, wherein: The drive unit includes a second motor, a disc, a protrusion, and a fixing block. A fixing block is fixedly installed on the top of the fixing rod. The fixing block has a sliding groove along the transverse direction. A disc is rotatably installed on the side wall of the fixing frame. A protrusion is fixedly installed on the outer edge of the disc near the fixing block. One end of the protrusion is slidably installed in the sliding groove. A second motor is fixedly installed on the fixing frame. The output shaft of the second motor is connected to one end of the disc for transmission.

5. A stone mat paving device according to claim 1, wherein: The fixing frame is fixedly provided with a set of inclined plates on both sides of the inner wall of the storage cavity, and the top of the arc-shaped cover is fixedly connected to the bottom of the inclined plates.

6. A stone mat paving device according to claim 1, wherein: The collection box is equipped with a collection trough, the bottom of which is inclined. The side wall of the fixing frame near the bottom of the collection trough has a through hole, which connects to the top surface of the guide plate.

7. A stone mat paving apparatus as claimed in claim 2, wherein: A traction frame is fixedly installed on the side of the fixing frame away from the mounting plate.

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