A uniform and dense cement stabilized aggregate paving device and method

Abstract

The application belongs to the technical field of cement construction, and particularly relates to a uniform and dense cement stabilized macadam paving device and method. The rectangular frame walks according to a track, the upper surface of the rectangular frame is fixedly connected with a supporting bottom plate in a symmetrical distribution, the upper surface of the supporting bottom plate is provided with a crushing and stirring mechanism, the lower surface of the crushing and stirring mechanism is connected with a discharge port adjusting mechanism, and the inner surface of the rectangular frame is provided with a paving mechanism. The uniform and dense cement stabilized macadam paving device and method, when the cement stone passes through the crushing pipe, the rotation of the crushing rod is controlled, the crushing blade is driven to rotate at a high speed, the macadam in the cement stone is further crushed, and falls into the stirring barrel, the action of the speed reducer is controlled, the stirring rod and the arc-shaped stirring branch rod connected with the outer surface of the stirring rod are controlled to rotate, the cement stone stored in the stirring barrel is uniformly stirred, the flexibility of the cement stone is increased, and the cement stone can be uniformly paved on the road surface.

Description

Technical Field

[0001] This invention relates to the field of cement construction technology, and in particular to a uniform and dense cement-stabilized crushed stone paving device and method. Background Technology

[0002] Cement-stabilized crushed stone base course is widely used in my country due to its excellent mechanical properties. Cement-stabilized crushed stone uses graded crushed stone as aggregate, and fills the voids in the aggregate with a certain amount of cementitious material and sufficient mortar volume. It is then spread and compacted according to the principle of interlocking. Cement-stabilized crushed stone base course has high initial strength and good impermeability and frost resistance. In addition, the surface of cement-stabilized crushed stone base course is solid after completion and does not become muddy when it rains, making it an ideal base material for highway pavements.

[0003] While the single-pass paving and compaction method currently used in China is an ideal method for base course construction, it requires a specially configured high-impact vibratory roller to ensure that the compaction degree of the entire base course meets the requirements. However, due to the uneven quality of compaction machinery at existing construction sites, some sites do not have high-impact vibratory rollers, and the mixing force of cement stone is small. Unevenly mixed cement stone will result in a high density when laid on the road surface. Therefore, the present invention solves the above-mentioned technical problems. Summary of the Invention

[0004] Based on the aforementioned technical problems, this invention proposes a uniform and dense cement-stabilized crushed stone paving device and method.

[0005] The present invention proposes a uniform and dense cement-stabilized crushed stone paving device, comprising a rectangular frame that moves along a trajectory, a supporting base plate that is symmetrically distributed and fixedly connected to the upper surface of the rectangular frame, a crushing and mixing mechanism being provided on the upper surface of the supporting base plate, a discharge port adjustment mechanism being connected to the lower surface of the crushing and mixing mechanism, and a paving mechanism being provided on the inner surface of the rectangular frame.

[0006] The crushing and mixing mechanism crushes the poured cement stone and mixes it during storage.

[0007] The discharge port adjustment mechanism opens the sealed discharge port of the crushing and mixing mechanism to discharge material.

[0008] The paving mechanism spreads and vibrates the discharged cement stone.

[0009] Preferably, the crushing and mixing mechanism includes a mixing tank disposed on the upper surface of the supporting base plate, a crushing pipe is fixedly connected to one end of the upper surface of the mixing tank, and a feeding hopper is fixedly connected to the upper surface of the crushing pipe.

[0010] With the above technical solution, cement stone is generally pre-mixed and then evenly laid on the road surface through a feeding device. However, the size of the crushed stone is uneven, and the mixing effect of cement stone will be worse during the feeding and laying process. In order to improve the density of cement stone paving and keep it uniformly mixed, pre-mixed cement stone is fed into the feeding hopper through the feeding pipe. After passing through the crushing pipe, it is crushed and falls into the mixing tank for mixing and storage.

[0011] Preferably, the crushing and stirring mechanism further includes a support bracket fixedly connected to the inner sidewalls of the upper and lower ends of the crushing tube, and a crushing rod is rotatably connected to the surface of the upper support bracket via a bearing, and a crushing blade is fixedly connected to the upper surface of the crushing rod.

[0012] The above technical solution aims to crush the pre-mixed cement stone so that it can be spread evenly on the road surface to increase its density. As the cement stone passes through the crushing pipe, the crushing rod is controlled to rotate, causing the crushing blades to rotate at high speed, thereby further crushing the gravel inside the cement stone.

[0013] Preferably, the crushing and stirring mechanism further includes a rotating motor fixedly connected to the surface of the lower support bracket, and the outer surface of the output shaft of the rotating motor is fixedly connected to the lower surface of the crushing rod through a coupling.

[0014] Through the above technical solution, in order to control the high-speed rotation of the crushing rod, the rotating motor is rotated under the support of the lower support bracket, which in turn drives the connected crushing rod and the crushing blades on its upper surface to rotate at high speed to crush cement stone.

[0015] Preferably, the crushing and stirring mechanism further includes a stirring rod rotatably connected to the inner wall of the stirring tank via a bearing, a reduction motor is fixedly connected to the upper surface of the stirring tank, the outer surface of the output shaft of the reduction motor is fixedly connected to the upper surface of the stirring rod via a coupling, and an arc-shaped stirring support rod is fixedly connected to the outer surface of the stirring rod via a connecting support rod.

[0016] Through the above technical solution, in order to further stir the crushed cement stone, the geared motor is controlled to rotate, thereby controlling the stirring rod and the arc-shaped stirring support rod connected to its outer surface to rotate, so as to uniformly stir the cement stone stored in the mixing tank.

[0017] Preferably, the crushing and mixing mechanism further includes a support plate fixedly connected to the outer surface of the mixing tank by a fixing ring, a water tank fixedly connected to the upper surface of the support plate by a support rod, an inlet ring pipe fixedly connected to the inner top wall of the mixing tank by a connecting rod, the water outlet of the water tank being fixedly connected to the inside of the inlet ring pipe by an inlet pipe, and a nozzle arranged in a ring array being fixedly connected to the lower surface of the inlet ring pipe.

[0018] To prevent the cement stone in the mixing drum from hardening due to storage time and cracking during paving, a temperature and humidity sensor is installed on the outer surface of the mixing drum to monitor the humidity of the cement stone in real time. During mixing, water from the water tank is transported to the water inlet ring pipe through the water inlet pipe and then evenly sprayed into the mixed cement stone through the nozzle, thereby improving the flexibility of the cement stone.

[0019] Preferably, the discharge port adjustment mechanism includes an arc-shaped discharge port that extends through the lower surface of the mixing tank. A concave adjustment turntable is rotatably connected to the lower outer surface of the mixing tank via a rotating bearing. A receiving interface corresponding to the arc-shaped discharge port is provided through the inner bottom surface of the adjustment turntable. A conical discharge pipe is fixedly connected to the lower surface of the receiving interface, and a discharge bend is fixedly connected to the lower surface of the conical discharge pipe.

[0020] With the above technical solution, in order to use the mixed cement stone, the control and adjustment turntable is rotated so that the receiving interface corresponds with the arc-shaped discharge port. As the mixing rod and the arc-shaped mixing support rod rotate, the mixed cement stone can be pushed into the arc-shaped discharge port, pass through the discharge port, and slide from the conical discharge pipe into the discharge bend, and then be discharged to the construction road surface.

[0021] Preferably, the discharge port adjustment mechanism further includes push cylinders symmetrically distributed and fixedly installed on the inner bottom surface of the middle part of the adjustment turntable. A vacuum suction cup is fixedly connected to the piston rod surface of the push cylinder. The upper surface of the vacuum suction cup slides in contact with the lower surface of the mixing tank. A concave groove is formed on the lower surface of the adjustment turntable. A drive motor is rotatably mounted on the inner sidewall of the concave groove through a mounting bearing. The outer surface of the output shaft of the drive motor is fixedly connected to the inner top wall of the concave groove through a coupling.

[0022] Through the above technical solution, in order to fix the position of the adjusting turntable and facilitate the discharge of material after the receiving interface aligns with the arc-shaped discharge port, after the receiving interface aligns with the arc-shaped discharge port, the vacuum suction cup is pushed upward by the top-push cylinder and adsorbed onto the lower surface of the mixing tank, thereby fixing the position of the adjusting turntable. In order to seal the arc-shaped discharge port and facilitate the mixing and transportation of the cement stone inside, the drive motor is connected to the inner surface of the inner ring of the mounting bearing, and its output shaft can control the adjusting turntable to rotate 180 degrees, thus offsetting the receiving interface from the arc-shaped discharge port and preventing material from being discharged from the arc-shaped discharge port.

[0023] Preferably, the discharge port adjustment mechanism further includes a cleaning chamber that extends through the upper surface of the adjustment turntable and is opened inside it. The upper inner wall of the cleaning chamber is hinged with a downward-opening sealing cover. The inner wall of the cleaning chamber is symmetrically hinged with a pulling cylinder. The piston rod surface of the pulling cylinder is hinged to the lower surface of the sealing cover. The bottom wall of the cleaning chamber is fixedly connected with a pushing cylinder. The piston rod surface of the pushing cylinder is fixedly connected with a blocking airbag. The inner wall of the cleaning chamber is fixedly connected with an ultrasonic cleaner. The inner wall of the cleaning chamber is fixedly connected with an inlet pipe and a drain pipe.

[0024] Through the above technical solution, in order to achieve better sealing of the arc-shaped discharge port by the adjusting turntable, thereby facilitating the mixing of cement stone in the mixing tank, after the adjusting turntable is rotated and adjusted, the upper surface of the cleaning chamber corresponds to the lower surface of the arc-shaped discharge port. At this time, by pulling the cylinder, its piston rod is pulled down to pull the sealing cover, so that the cleaning chamber is in an open state. By pushing the cylinder upward, the blocking airbag is pushed up, extending it to the inner wall of the arc-shaped discharge port, and then the blocking airbag expands, thereby sealing the arc-shaped discharge port. In order to clean the shrinking blocking airbag for easy reuse, when the blocking airbag is reset, cleaning fluid is injected into the cleaning chamber through the liquid inlet pipe, and the ultrasonic cleaner vibrates the cleaning fluid, thereby vibrating and cleaning the blocking airbag. The wastewater after cleaning is discharged from the drain pipe.

[0025] Preferably, the paving mechanism includes a paving rod and a roller rotatably connected to the inner surfaces of both ends of the rectangular frame via bearings. Guide wheels are fixedly connected to both ends of the roller shafts of the paving rod and the roller. The paving rod is linked to the roller via a first pulley assembly. A first servo motor is fixedly connected to the upper surface of one end of the rectangular frame. The outer surface of the output shaft of the first servo motor controls the rotation of the paving rod via a second pulley assembly.

[0026] Through the above technical solution, in order to spread the discharged uniformly mixed cement stone, the paving rod is set as an opposing spiral conveyor rod. As the cement stone is fed, the first servo motor controls the rotation of the paving rod through the second pulley assembly, so that the cement stone piled at both ends can be conveyed relative to each other, realizing the horizontal spreading of the cement stone. In order to maintain the compactness of the paved road surface, the road roller under the first pulley assembly rotates synchronously to horizontally compact the paved road surface. The guide wheel can move the rectangular frame.

[0027] Preferably, the paving mechanism further includes a rotating rod rotatably connected to the inner surface of the rectangular frame via bearings. Cam blocks are fixedly connected to the outer surface of the rotating rod in a rectangular array. Connecting bearings are installed on the outer surfaces of both ends of the rotating rod. Vibration springs are fixedly connected to the outer surfaces of the connecting bearings in a circular array. A vibration tube is movably sleeved on the outer surface of the rotating rod. The free end of the vibration spring is fixedly connected to the inner wall of the opening of the vibration tube. A vibrating block is fixedly connected to the inner wall of the vibration tube. The surface of the vibrating block slides in contact with the surface of the cam blocks. A second servo motor is fixedly connected to the upper surface of the rectangular frame. The second servo motor controls the rotation of the rotating rod via a third pulley assembly. A rubber scraper is fixedly connected to the inner surface of the rectangular frame.

[0028] Through the above technical solution, in order to compact the paved cement stone, the cement stone is laid flat by the paving rod, and then the second servo motor controls the rotating rod to rotate, which drives the cam block to rotate and hit the vibrating block. Under the elastic force of the vibration spring, the vibrating tube vibrates at high frequency, which can compact the cement stone. In order to maintain the smoothness of the road, a rubber scraper is set to move with the rectangular frame, which can then scrape the uneven road surface.

[0029] The present invention discloses a method for using a uniform and dense cement-stabilized crushed stone paving device, comprising the following steps:

[0030] S1. Pre-mixed cement stone is conveyed to the lower material hopper through the feed pipe. When it passes through the crushing pipe, the rotating motor supported by the lower support bracket controls the crushing rod supported by the upper support bracket to rotate, which can drive the crushing blade to rotate at high speed, thereby further crushing the stone in the cement stone.

[0031] S2. After the crushed and mixed cement stone passes through the crushing pipe, it falls into the mixing drum. At this time, the arc-shaped discharge port is sealed, and the control reduction motor is activated to control the mixing rod and the arc-shaped mixing support rod connected to its outer surface to rotate, thereby mixing the cement stone stored in the mixing drum.

[0032] S3. When the cement stone is being mixed, the water in the water tank is transported to the inlet ring pipe through the inlet pipe, and then evenly sprayed into the mixed cement stone through the nozzle, so that the cement stone is kept mixed in the mixing drum.

[0033] S4. When the mixing tank is discharging, the vacuum suction cup stops adsorbing the lower surface of the mixing tank and the push cylinder drives the vacuum suction cup to reset. At this time, the drive motor in the concave groove controls the adjusting turntable to rotate 180 degrees. When the adjusting turntable rotates, the blocking airbag contracts and when the push cylinder resets, it drives the blocking airbag to retract into the cleaning chamber. Then, under the push of the piston rod of the pulling cylinder, the sealing cover seals the cleaning chamber. The cleaning liquid is injected into the cleaning chamber through the liquid inlet pipe, and the ultrasonic cleaner vibrates the cleaning liquid, which can vibrate and clean the blocking airbag. The wastewater after cleaning is discharged from the drain pipe.

[0034] S5. After adjusting the turntable rotation, the receiving interface can be connected with the arc-shaped discharge port. At this time, with the rotation of the mixing rod and the arc-shaped mixing support rod, the mixed cement stone can be pushed into the arc-shaped discharge port, pass through the discharge port, and slide from the conical discharge pipe into the discharge bend pipe, and then be discharged to the construction road surface.

[0035] S6. After the cement stone is laid on the road surface, the first servo motor controls the paving rod to rotate through the second pulley assembly, so that the cement stone piled at both ends can be transported relative to each other, realizing the horizontal paving of the cement stone. As the rectangular frame moves forward under the action of the guide wheel, the rubber scraper at the front end scrapes the paved cement stone for the first time. Then, the second servo motor controls the rotating rod to rotate, driving the cam block to rotate and hit the vibrating block. Under the elastic force of the vibration spring, the vibrating tube vibrates at high frequency, which can compact the cement stone. Then, the rubber scraper at the rear end scrapes the vibrated and compacted road surface again as the rectangular frame moves. Finally, with the rotation of the roller, the cement stone paved on the road surface can be compacted and flat.

[0036] The beneficial effects of this invention are as follows:

[0037] 1. By setting up a crushing and mixing mechanism, the cement stone to be paved can be further crushed and kept mixed during discharge. During the adjustment process, when the cement stone passes through the crushing pipe, the crushing rod is controlled to rotate, which drives the crushing blade to rotate at high speed. This further crushes the gravel in the cement stone and it falls into the mixing drum. This controls the reduction motor to rotate the mixing rod and the arc-shaped mixing support rod connected to its outer surface. This allows the cement stone stored in the mixing drum to be mixed evenly, thereby increasing the flexibility of the cement stone and enabling it to be evenly spread on the road surface.

[0038] 2. By setting up a discharge port adjustment mechanism, the sealed discharge port of the crushing and mixing mechanism can be opened to discharge material, which facilitates thorough mixing of cement stone. During the adjustment process, the adjustment turntable is rotated to align the receiving interface with the arc-shaped discharge port. As the mixing rod and the arc-shaped mixing support rod rotate, the mixed cement stone can be pushed into the arc-shaped discharge port, pass through the discharge port, and slide into the discharge bend from the conical discharge pipe, and then be discharged onto the construction road surface, achieving uniform discharge of cement stone and facilitating its even spreading on the road surface.

[0039] 3. By setting up a paving mechanism, the discharged cement stone can be paved and vibrated and compacted. During the adjustment process, the paving rod is set up with opposing spiral conveying rods. As the cement stone is fed, the first servo motor controls the rotation of the paving rod through the second pulley assembly, so that the cement stone piled at both ends can be conveyed relative to each other, realizing the horizontal paving of the cement stone. After the paving rod spreads the cement stone evenly, the second servo motor controls the rotating rod to rotate, driving the cam block to rotate and strike the vibrating block. Under the elastic force of the vibration spring, the vibrating tube vibrates at high frequency, which can compact the cement stone, thus making the cement stone paved evenly and densely. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of a uniform and dense cement-stabilized crushed stone paving device and method proposed in this invention.

[0041] Figure 2 This is a three-dimensional view of the material hopper structure of a uniform and dense cement-stabilized crushed stone paving device and method proposed in this invention.

[0042] Figure 3 This is a three-dimensional view of the crushing pipe structure of a uniform and dense cement-stabilized crushed stone paving device and method proposed in this invention.

[0043] Figure 4 This is a perspective view of the mixing tank structure of a uniform and dense cement-stabilized crushed stone paving device and method proposed in this invention.

[0044] Figure 5 This is a perspective view of the adjusting turntable structure of a uniform and dense cement-stabilized crushed stone paving device and method proposed in this invention.

[0045] Figure 6 This is a three-dimensional view of the conical discharge pipe structure of a uniform and dense cement-stabilized crushed stone paving device and method proposed in this invention.

[0046] Figure 7 This is a perspective view of the drive motor structure of a uniform and dense cement-stabilized crushed stone paving device and method proposed in this invention.

[0047] Figure 8This is a three-dimensional view of the cleaning chamber structure of a uniform and dense cement-stabilized crushed stone paving device and method proposed in this invention.

[0048] Figure 9 This is a three-dimensional view of the first servo motor structure of a uniform and dense cement-stabilized crushed stone paving device and method proposed in this invention.

[0049] Figure 10 This is a perspective view of the paving rod structure of a uniform and dense cement-stabilized crushed stone paving device and method proposed in this invention.

[0050] Figure 11 This is a three-dimensional view of the vibrating pipe structure of a uniform and dense cement-stabilized crushed stone paving device and method proposed in this invention.

[0051] Figure 12 This is a three-dimensional view of the cam block structure of a uniform and dense cement-stabilized crushed stone paving device and method proposed in this invention.

[0052] Figure 13 This is a three-dimensional view of the rubber scraper structure of a uniform and dense cement-stabilized crushed stone paving device and method proposed in this invention.

[0053] In the diagram: 1. Rectangular frame; 11. Support base plate; 2. Crushing and mixing mechanism; 21. Mixing tank; 22. Crushing pipe; 23. Feed hopper; 24. Support bracket; 25. Crushing rod; 26. Crushing blade; 27. Rotary motor; 28. Mixing rod; 29. ​​Gear motor; 30. Arc-shaped mixing support rod; 31. Support plate; 32. Water tank; 33. Water inlet ring pipe; 34. Nozzle; 4. Discharge port adjustment mechanism; 41. Arc-shaped discharge port; 42. Adjusting turntable; 43. Receiver; 44. Conical discharge pipe; 45. Discharge bend; 46. Top 47. Push cylinder; 48. Vacuum suction cup; 49. Concave groove; 50. Drive motor; 51. Cleaning chamber; 52. Sealing cover; 53. Pull cylinder; 54. Push cylinder; 55. Blocking airbag; 56. Ultrasonic cleaner; 57. Liquid inlet pipe; 68. Drain pipe; 69. Paving mechanism; 60. Paving rod; 61. Roller roller; 62. Guide wheel; 63. First servo motor; 64. Rotating rod; 65. Cam block; 66. Connecting bearing; 67. Vibration spring; 68. Vibration tube; 79. Vibrating block; 70. Second servo motor; 71. Rubber scraper. Detailed Implementation

[0054] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0055] Reference Figures 1-13The present invention proposes a uniform and dense cement-stabilized crushed stone paving device, comprising a rectangular frame 1 that moves along a trajectory, a supporting base plate 11 that is symmetrically distributed and fixedly connected to the upper surface of the rectangular frame 1, a crushing and mixing mechanism 2 that is provided on the upper surface of the supporting base plate 11, a discharge port adjustment mechanism 4 that is connected to the lower surface of the crushing and mixing mechanism 2, and a paving mechanism 6 that is provided on the inner surface of the rectangular frame 1.

[0056] like Figures 2-6 As shown, the crushing and mixing mechanism 2 crushes the poured cement stone and mixes it during storage.

[0057] Cement stone is usually pre-mixed and then evenly laid on the road surface through a feeding device. However, the size of the crushed stone is uneven, and the mixing effect of cement stone will be worse during the feeding and laying process. In order to improve the compactness of cement stone paving and keep it uniformly mixed, the crushing and mixing mechanism 2 includes a mixing tank 21 set on the upper surface of the supporting base plate 11. One end of the upper surface of the mixing tank 21 is fixedly connected to a crushing pipe 22, and the upper surface of the crushing pipe 22 is fixedly connected to a feeding hopper 23. The feeding pipe conveys the pre-mixed cement stone to the feeding hopper 23. After passing through the crushing pipe 22, it is crushed and falls into the mixing tank 21 for mixing and storage.

[0058] In order to crush the pre-mixed cement stone so that it can be spread on the road surface to increase its density, the crushing and mixing mechanism 2 also includes a support bracket 24 that is fixedly connected to the inner side wall of the upper and lower ends of the crushing pipe 22. The surface of the upper support bracket 24 is rotatably connected to the crushing rod 25 through the bearing. The upper surface of the crushing rod 25 is fixedly connected to the crushing blade 26. When the cement stone passes through the crushing pipe 22, the crushing rod 25 is controlled to rotate, so that it drives the crushing blade 26 to rotate at high speed, thereby further crushing the gravel in the cement stone.

[0059] In order to control the high-speed rotation of the crushing rod 25, the crushing and mixing mechanism 2 also includes a rotating motor 27 fixedly connected to the surface of the lower support bracket 24. The outer surface of the output shaft of the rotating motor 27 is fixedly connected to the lower surface of the crushing rod 25 through a coupling. The rotating motor 27 is rotated under the support of the lower support bracket 24, which in turn drives the connected crushing rod 25 and the crushing blade 26 on its upper surface to rotate at high speed to crush cement stone.

[0060] To further agitate the crushed cement stone, the crushing and agitating mechanism 2 also includes an agitator 28 rotatably connected to the inner wall of the mixing drum 21 via bearings. A geared motor 29 is fixedly connected to the upper surface of the mixing drum 21. The outer surface of the output shaft of the geared motor 29 is fixedly connected to the upper surface of the agitator 28 via a coupling. An arc-shaped agitator support rod 30 is fixedly connected to the outer surface of the agitator 28 via a connecting support rod. By controlling the geared motor 29 to rotate the agitator 28 and the arc-shaped agitator support rod 30 connected to its outer surface, the cement stone stored in the mixing drum 21 can be uniformly agitated.

[0061] To prevent the cement stone inside the mixing drum 21 from hardening due to storage time and cracking during paving, the crushing and mixing mechanism 2 also includes a support plate 31 fixedly connected to the outer surface of the mixing drum 21 by a fixing ring. A water tank 32 is fixedly connected to the upper surface of the support plate 31 by a support rod. An inlet ring pipe 33 is fixedly connected to the inner top wall of the mixing drum 21 by a connecting rod. The water outlet of the water tank 32 is fixedly connected to the inside of the inlet ring pipe 33 by an inlet pipe. A nozzle 34 arranged in a ring array is fixedly connected to the lower surface of the inlet ring pipe 33. A temperature and humidity sensor is installed on the outer surface of the mixing drum 21 to monitor the humidity of the cement stone in real time. During mixing, water in the water tank 32 is transported to the inlet ring pipe 33 through the inlet pipe and then evenly sprayed into the interior of the mixed cement stone through the nozzles 34, thereby improving the flexibility of the cement stone.

[0062] By setting up the crushing and mixing mechanism 2, the cement stone to be paved can be further crushed and kept mixed during discharge. During the adjustment process, when the cement stone passes through the crushing pipe 22, the crushing rod 25 is controlled to rotate, which drives the crushing blade 26 to rotate at high speed. This further crushes the gravel in the cement stone and drops it into the mixing drum 21. This controls the reduction motor 29 to rotate the mixing rod 28 and the arc-shaped mixing support rod 30 connected to its outer surface. This allows the cement stone stored in the mixing drum 21 to be mixed evenly, thereby increasing the flexibility of the cement stone and enabling it to be evenly spread on the road surface.

[0063] like Figures 7-8 As shown, the discharge port adjustment mechanism 4 opens the sealed discharge port of the crushing and mixing mechanism 2 to discharge material.

[0064] To facilitate the use of the mixed cement aggregate, the discharge port adjustment mechanism 4 includes an arc-shaped discharge port 41 extending through the lower surface of the mixing drum 21. A concave adjustment turntable 42 is rotatably connected to the lower outer surface of the mixing drum 21 via a rotating bearing. A receiving interface 43 corresponding to the arc-shaped discharge port 41 is provided through the inner bottom surface of the adjustment turntable 42. A conical discharge pipe 44 is fixedly connected to the lower surface of the receiving interface 43, and a discharge bend 45 is fixedly connected to the lower surface of the conical discharge pipe 44. By controlling the rotation of the adjustment turntable 42, the receiving interface 43 is aligned with the arc-shaped discharge port 41. As the mixing rod 28 and the arc-shaped mixing support rod 30 rotate, the mixed cement aggregate can be pushed into the arc-shaped discharge port 41, pass through the discharge port, and slide from the conical discharge pipe 44 into the discharge bend 45, and then discharged onto the construction road surface.

[0065] To fix the position of the adjusting turntable 42 and facilitate material discharge after the receiving interface 43 aligns with the arc-shaped discharge port 41, the discharge port adjusting mechanism 4 also includes a push cylinder 46 symmetrically distributed and fixedly installed on the inner bottom surface of the middle part of the adjusting turntable 42. A vacuum suction cup 47 is fixedly connected to the piston rod surface of the push cylinder 46. The upper surface of the vacuum suction cup 47 slides in contact with the lower surface of the mixing tank 21. A concave groove 48 is formed on the lower surface of the adjusting turntable 42. A drive motor 49 is rotatably mounted on the inner wall of the concave groove 48 via a bearing. After the receiving interface 43 aligns with the arc-shaped discharge port 41, the push cylinder 46 pushes the vacuum suction cup 47 upwards, causing it to adhere to the lower surface of the mixing tank 21, thus fixing the position of the adjusting turntable 42. To seal the arc-shaped discharge port 41 and facilitate the mixing and transportation of the internal cement stone, the drive cylinder 49... The outer surface of the output shaft of the drive motor 49 is fixedly connected to the inner top wall of the concave groove 48 via a coupling. The discharge port adjustment mechanism 4 also includes a push cylinder 46 symmetrically distributed and fixedly installed on the inner bottom surface of the middle part of the adjustment turntable 42. A vacuum suction cup 47 is fixedly connected to the piston rod surface of the push cylinder 46. The upper surface of the vacuum suction cup 47 slides in contact with the lower surface of the mixing tank 21. A concave groove 48 is provided on the lower surface of the adjustment turntable 42. The drive motor 49 is rotatably installed on the inner side wall of the concave groove 48 via a mounting bearing. The outer surface of the output shaft of the drive motor 49 is fixedly connected to the inner top wall of the concave groove 48 via a coupling. The drive motor 49 is connected to the inner surface of the inner ring of the mounting bearing. Its output shaft can control the adjustment turntable 42 to rotate 180 degrees, thus offsetting the receiving interface 43 from the arc-shaped discharge port 41, thereby preventing the arc-shaped discharge port 41 from discharging material.

[0066] To achieve a better seal between the adjusting turntable 42 and the arc-shaped discharge port 41, thereby facilitating the mixing of cement stone in the mixing tank 21, the discharge port adjusting mechanism 4 further includes a cleaning chamber 50 that penetrates the upper surface of the adjusting turntable 42 and is opened inside it. A downward-opening sealing cover 51 is hinged to the inner wall of the upper end of the cleaning chamber 50. Pulling cylinders 52 are symmetrically distributed and hinged to the inner wall of the cleaning chamber 50. The piston rod surface of the pulling cylinder 52 is hinged to the lower surface of the sealing cover 51. A pushing cylinder 53 is fixedly connected to the inner bottom wall of the cleaning chamber 50. A blocking airbag 54 is fixedly connected to the piston rod surface of the pushing cylinder 53. After the adjusting turntable 42 is rotated and adjusted, the upper surface of the cleaning chamber 50 corresponds to the lower surface of the arc-shaped discharge port 41. At this time, the pulling cylinder 52 is activated. The piston rod pulls the sealing cover 51 downwards, opening the cleaning chamber 50. The cylinder 53 pushes the blocking airbag 54 upwards, extending it to the inner wall of the arc-shaped outlet 41. The blocking airbag 54 then expands, sealing the arc-shaped outlet 41. To facilitate cleaning and reuse of the contracted blocking airbag 54, an ultrasonic cleaner 55 is fixedly connected to the inner wall of the cleaning chamber 50. An inlet pipe 56 and a drain pipe 57 are fixedly connected to the inner wall of the cleaning chamber 50. When the blocking airbag 54 resets, cleaning fluid is injected into the cleaning chamber 50 through the inlet pipe 56, and the ultrasonic cleaner 55 vibrates the cleaning fluid, thus cleaning the blocking airbag 54. The cleaned wastewater is discharged through the drain pipe 57.

[0067] By setting the discharge port adjustment mechanism 4, the sealed discharge port of the crushing and mixing mechanism 2 can be opened to discharge materials, which facilitates the thorough mixing of cement stone. During the adjustment process, the adjustment turntable 42 is rotated to make the receiving interface 43 correspond to the arc-shaped discharge port 41. As the mixing rod 28 and the arc-shaped mixing support rod 30 rotate, the mixed cement stone can be pushed into the arc-shaped discharge port 41, pass through the discharge port, and slide from the conical discharge pipe 44 into the discharge bend pipe 45, which can then be discharged onto the construction road surface, achieving uniform discharge of cement stone and facilitating its even spreading on the road surface.

[0068] like Figures 9-13 As shown, the paving mechanism 6 spreads and vibrates the discharged cement stone.

[0069] To spread the uniformly mixed cement stone, the paving mechanism 6 includes a paving rod 61 and a roller 62, which are rotatably connected to the inner surfaces of both ends of a rectangular frame 1 via bearings. Guide wheels 63 are fixedly connected to both ends of the roller shafts of the paving rod 61 and the roller 62. The paving rod 61 is linked to the roller 62 via a first pulley assembly. A first servo motor 64 is fixedly connected to the upper surface of one end of the rectangular frame 1. The outer surface of the output shaft of the first servo motor 64 controls the rotation of the paving rod 61 via a second pulley assembly. The paving rod 61 is configured as an opposing spiral conveyor. As the cement stone is fed, the first servo motor 64 controls the rotation of the paving rod 61 via the second pulley assembly, thereby allowing the cement stone accumulated at both ends to be conveyed relative to each other, achieving horizontal paving of the cement stone. The roller 62 rotates synchronously under the first pulley assembly to horizontally compact the paved surface. The guide wheels 63 allow the rectangular frame 1 to move.

[0070] To compact the paved cement aggregate, the paving mechanism 6 also includes a rotating rod 65 rotatably connected to the inner surface of the middle part of the rectangular frame 1 via bearings. Cam blocks 66 are fixedly connected to the outer surface of the rotating rod 65 in a rectangular array. Connecting bearings 67 are installed on the outer surfaces of both ends of the rotating rod 65. Vibration springs 68 are fixedly connected to the outer surfaces of the connecting bearings 67 in a circular array. A vibrating tube 69 is movably sleeved on the outer surface of the rotating rod 65. The free end of the vibration spring 68 is fixedly connected to the inner wall of the opening of the vibrating tube 69. A vibrating block 70 is fixedly connected to the inner wall of the vibrating tube 69, and the surface of the vibrating block 70 slides in contact with the surface of the cam blocks 66. A second servo motor 71 is fixedly connected to the upper surface of the rectangular frame 1. The second servo motor 71 controls the rotating rod 65 to rotate through the third pulley assembly. After the cement stone is laid flat by the paving rod 61, the second servo motor 71 controls the rotating rod 65 to rotate, which drives the cam block 66 to rotate and strike the vibrating block 70. Under the elastic force of the vibration spring 68, the vibrating tube 69 vibrates at high frequency, which can compact the cement stone. In order to maintain the flatness of the road, a rubber scraper 72 is fixedly connected to the inner surface of the rectangular frame 1. The rubber scraper moves with the movement of the rectangular frame 1, which can smooth the uneven road surface.

[0071] By setting up the paving mechanism 6, the discharged cement stone can be paved and vibrated and compacted. During the adjustment process, the paving rod 61 is set up as an opposing spiral conveyor. As the cement stone is fed, the first servo motor 64 controls the paving rod 61 to rotate through the second pulley assembly, so that the cement stone piled at both ends can be transported relative to each other, realizing the horizontal paving of the cement stone. After the paving rod 61 spreads the cement stone evenly, the second servo motor 71 controls the rotating rod 65 to rotate, driving the cam block 66 to rotate and strike the vibrating block 70. Under the elastic force of the vibration spring 68, the vibrating tube 69 vibrates at high frequency, which can compact the cement stone, so that the cement stone is paved evenly and densely.

[0072] Reference Figure 1-13 The present invention provides a method for using a uniform and dense cement-stabilized crushed stone paving device, comprising the following steps:

[0073] S1. Pre-mixed cement stone is conveyed to the lower material hopper 23 through the feed pipe. When it passes through the crushing pipe 22, the rotating motor 27 supported by the lower support bracket 24 controls the crushing rod 25 supported by the upper support bracket 24 to rotate, thereby driving the crushing blade 26 to rotate at high speed, which can further crush the gravel in the cement stone.

[0074] S2. After the crushed and mixed cement stone passes through the crushing pipe 22, it falls into the mixing tank 21. At this time, the arc-shaped discharge port 41 is sealed, and the control reduction motor 29 is activated to control the mixing rod 28 and the arc-shaped mixing support rod 30 connected to its outer surface to rotate, thereby stirring the cement stone stored in the mixing tank 21.

[0075] S3. When the cement stone is being mixed, the water in the water tank 32 is transported to the water inlet ring pipe 33 through the water inlet pipe, and then evenly sprayed into the mixed cement stone through the nozzle 34. The cement stone is kept mixed in the mixing bucket 21.

[0076] S4. When the mixing tank 21 is discharging, the vacuum suction cup 47 stops adsorbing the lower surface of the mixing tank 21, and the push cylinder 53 drives the vacuum suction cup 47 to reset. At this time, the drive motor 49 in the concave groove 48 controls the adjusting turntable 42 to rotate 180 degrees. When the adjusting turntable 42 rotates, the blocking airbag 54 contracts. When the push cylinder 53 resets, it drives the blocking airbag 54 to retract into the cleaning chamber 50. Then, under the push of the piston rod of the pulling cylinder 52, the sealing cover 51 seals the cleaning chamber 50. The cleaning liquid is injected into the cleaning chamber 50 through the liquid inlet pipe 56, and the ultrasonic cleaner 55 vibrates the cleaning liquid, thereby vibrating and cleaning the blocking airbag 54. The wastewater after cleaning is discharged from the drain pipe 57.

[0077] S5. After the turntable 42 is rotated, the receiving interface 43 can be connected with the arc-shaped discharge port 41. At this time, as the mixing rod 28 and the arc-shaped mixing support rod 30 rotate, the mixed cement stone can be pushed into the arc-shaped discharge port 41, pass through the discharge port, and slide from the conical discharge pipe 44 into the discharge bend pipe 45, and then be discharged to the construction road surface.

[0078] S6. After the cement stone is laid on the road surface, the first servo motor 64 controls the paving rod 61 to rotate through the second pulley assembly, so that the cement stone piled at both ends can be transported relative to each other, realizing the horizontal paving of the cement stone. As the rectangular frame 1 moves forward under the action of the guide wheel 63, the rubber scraper 72 at the front end scrapes the paved cement stone for the first time. Then, the second servo motor 71 controls the rotating rod 65 to rotate, driving the cam block 66 to rotate and strike the vibrating block 70. Thus, under the elastic force of the vibration spring 68, the vibrating tube 69 vibrates at high frequency, which can compact the cement stone. Then, the rubber scraper 72 at the rear end scrapes the vibrated and compacted road surface again as the rectangular frame 1 moves. Finally, with the rotation of the road roller 62, the cement stone paved on the road surface can be made dense and flat.

[0079] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A uniform and dense cement-stabilized crushed stone paving device, comprising a rectangular frame (1) that moves along a trajectory, characterized in that: The upper surface of the rectangular frame (1) is symmetrically connected with a support base plate (11), the upper surface of the support base plate (11) is provided with a crushing and mixing mechanism (2), the lower surface of the crushing and mixing mechanism (2) is connected with a discharge port adjustment mechanism (4), and the inner surface of the rectangular frame (1) is provided with a paving mechanism (6). The crushing and mixing mechanism (2) crushes the poured cement stone and mixes it during storage. The crushing and mixing mechanism (2) includes a mixing tank (21) disposed on the upper surface of the supporting base plate (11). One end of the upper surface of the mixing tank (21) is fixedly connected to a crushing pipe (22), and the upper surface of the crushing pipe (22) is fixedly connected to a feeding hopper (23). The crushing and mixing mechanism (2) also includes a support plate (31) fixedly connected to the outer surface of the mixing tank (21) by a fixing ring. A water tank (32) is fixedly connected to the upper surface of the support plate (31) by a support rod. A water inlet ring pipe (33) is fixedly connected to the inner top wall of the mixing tank (21) by a connecting rod. The water outlet of the water tank (32) is fixedly connected to the inside of the water inlet ring pipe (33) by a water inlet pipe. A nozzle (34) arranged in a ring array is fixedly connected to the lower surface of the water inlet ring pipe (33). The discharge port adjustment mechanism (4) opens the sealed discharge port of the crushing and mixing mechanism (2) to discharge material. The discharge port adjustment mechanism (4) includes an arc-shaped discharge port (41) that passes through the lower surface of the mixing tank (21). The lower outer surface of the mixing tank (21) is rotatably connected to a concave-shaped adjustment turntable (42) via a rotating bearing. The inner bottom surface of the adjustment turntable (42) is provided with a receiving interface (43) corresponding to the arc-shaped discharge port (41). The lower surface of the receiving interface (43) is fixedly connected to a conical discharge pipe (44). The lower surface of the conical discharge pipe (44) is fixedly connected to a discharge bend (45). The discharge port adjustment mechanism (4) further includes a push cylinder (46) that is symmetrically distributed and fixedly installed on the inner bottom surface of the middle part of the adjustment turntable (42). A vacuum suction cup (47) is fixedly connected to the piston rod surface of the push cylinder (46). The upper surface of the vacuum suction cup (47) slides in contact with the lower surface of the mixing tank (21). A concave groove (48) is opened on the lower surface of the adjustment turntable (42). A drive motor (49) is rotatably installed on the inner side wall of the concave groove (48) through a bearing. The outer surface of the output shaft of the drive motor (49) is fixedly connected to the inner top wall of the concave groove (48) through a coupling. The discharge port adjustment mechanism (4) further includes a cleaning chamber (50) that penetrates the upper surface of the adjustment turntable (42) and is opened inside it. The upper inner wall of the cleaning chamber (50) is hinged with a downward-opening sealing cover (51). The inner wall of the cleaning chamber (50) is symmetrically distributed with a pulling cylinder (52) hinged. The piston rod surface of the pulling cylinder (52) is hinged to the lower surface of the sealing cover (51). The inner bottom wall of the cleaning chamber (50) is fixedly connected with a pushing cylinder (53). The piston rod surface of the pushing cylinder (53) is fixedly connected with a blocking airbag (54). The inner wall of the cleaning chamber (50) is fixedly connected with an ultrasonic cleaner (55). The inner wall of the cleaning chamber (50) is respectively fixedly connected with an inlet pipe (56) and a drain pipe (57). The paving mechanism (6) paves and vibrates the discharged cement stone.

2. The uniform and dense cement-stabilized crushed stone paving device according to claim 1, characterized in that: The crushing and stirring mechanism (2) further includes a support bracket (24) fixedly connected to the inner sidewalls of the upper and lower ends of the crushing tube (22). The surface of the upper support bracket (24) is rotatably connected to a crushing rod (25) via a bearing. The upper surface of the crushing rod (25) is fixedly connected to a crushing blade (26). The crushing and stirring mechanism (2) also includes a rotating motor (27) fixedly connected to the surface of the lower support bracket (24), and the outer surface of the output shaft of the rotating motor (27) is fixedly connected to the lower surface of the crushing rod (25) through a coupling.

3. The uniform and dense cement-stabilized crushed stone paving device according to claim 2, characterized in that: The crushing and stirring mechanism (2) also includes a stirring rod (28) rotatably connected to the inner wall of the stirring barrel (21) via a bearing. A reduction motor (29) is fixedly connected to the upper surface of the stirring barrel (21). The outer surface of the output shaft of the reduction motor (29) is fixedly connected to the upper surface of the stirring rod (28) via a coupling. An arc-shaped stirring support rod (30) is fixedly connected to the outer surface of the stirring rod (28) via a connecting support rod.

4. The uniform and dense cement-stabilized crushed stone paving device according to claim 3, characterized in that: The paving mechanism (6) includes a paving rod (61) and a roller (62) rotatably connected to the inner surfaces of both ends of the rectangular frame (1) via bearings. Guide wheels (63) are fixedly connected to both ends of the roller shafts of the paving rod (61) and the roller (62). The paving rod (61) is linked to the roller (62) via a first pulley assembly. A first servo motor (64) is fixedly connected to the upper surface of one end of the rectangular frame (1). The outer surface of the output shaft of the first servo motor (64) controls the rotation of the paving rod (61) via a second pulley assembly. The paving mechanism (6) also includes a rotating rod (65) rotatably connected to the inner surface of the middle part of the rectangular frame (1) via a bearing. Cam blocks (66) are fixedly connected to the outer surface of the rotating rod (65) in a rectangular array. Connecting bearings (67) are installed on the outer surfaces of both ends of the rotating rod (65). Vibration springs (68) are fixedly connected to the outer surface of the connecting bearings (67) in a ring array. A vibration tube (69) is movably sleeved on the outer surface of the rotating rod (65). The free end of the vibration spring (68) is fixedly connected to the inner wall of the opening of the vibration tube (69). A vibrating block (70) is fixedly connected to the inner wall of the vibration tube (69). The surface of the vibrating block (70) slides in contact with the surface of the cam block (66). A second servo motor (71) is fixedly connected to the upper surface of the rectangular frame (1). The second servo motor (71) controls the rotating rod (65) to rotate via a third pulley assembly. A rubber scraper (72) is fixedly connected to the inner surface of the rectangular frame (1).

5. A method of using a uniform and dense cement-stabilized crushed stone paving device according to any one of claims 1-4, comprising the following steps: S1. Pre-mixed cement stone is conveyed to the lower material hopper (23) through the feed pipe. When it passes through the crushing pipe (22), the rotating motor (27) supported by the lower support bracket (24) controls the crushing rod (25) supported by the upper support bracket (24) to rotate, thereby driving the crushing blade (26) to rotate at high speed, which can further crush the gravel in the cement stone. S2. After the crushed and mixed cement stone passes through the crushing pipe (22), it falls into the mixing tank (21). At this time, the arc-shaped discharge port (41) is sealed, and the control reduction motor (29) is activated to control the mixing rod (28) and the arc-shaped mixing support rod (30) connected to its outer surface to rotate, so as to mix the cement stone stored in the mixing tank (21). S3. When the cement stone is being mixed, the water in the water tank (32) is transported to the water inlet ring pipe (33) through the water inlet pipe, and then sprayed evenly inside the cement stone being mixed through the nozzle (34). The cement stone is kept being mixed in the mixing bucket (21). S4. When the mixing tank (21) is discharging, the vacuum suction cup (47) stops adsorbing the lower surface of the mixing tank (21) and causes the push cylinder (53) to drive the vacuum suction cup (47) to reset. At this time, the drive motor (49) in the concave groove (48) controls the adjusting turntable (42) to rotate 180 degrees. When the adjusting turntable (42) rotates, the blocking airbag (54) contracts. When the push cylinder (53) resets, it drives the blocking airbag (54) to retract into the cleaning chamber (50). Then, under the push of the piston rod of the pulling cylinder (52), the sealing cover (51) seals the cleaning chamber (50). The cleaning liquid is injected into the cleaning chamber (50) through the liquid inlet pipe (56), and the ultrasonic cleaner (55) vibrates the cleaning liquid, so that the blocking airbag (54) can be vibrated and cleaned. The wastewater after cleaning is discharged from the drain pipe (57). S5. After the turntable (42) rotates, the receiving interface (43) can be connected with the arc-shaped discharge port (41). At this time, as the mixing rod (28) and the arc-shaped mixing support rod (30) rotate, the mixed cement stone can be pushed into the arc-shaped discharge port (41), pass through the discharge port, and slide from the conical discharge pipe (44) into the discharge bend pipe (45), and then be discharged to the construction road surface. S6. After the cement stone is laid on the road surface, the first servo motor (64) controls the paving rod (61) to rotate through the second pulley assembly, so that the cement stone piled at both ends can be transported relative to each other, and the cement stone can be laid horizontally. As the rectangular frame (1) moves forward under the action of the guide wheel (63), the rubber scraper (72) at the front end scrapes the cement stone for the first time. Then the second servo motor (71) controls the rotating rod (65) to rotate, which drives the cam block (66) to rotate and hit the vibrating block (70). Under the elastic force of the vibration spring (68), the vibrating tube (69) vibrates at high frequency, which can compact the cement stone. Then the rubber scraper (72) at the rear end scrapes the vibrated compacted road surface again as the rectangular frame (1) moves. Finally, with the rotation of the road roller (62), the cement stone laid on the road surface can be made dense and flat.

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