Non-excavation grouting material for asphalt pavement cracks and preparation method of non-excavation grouting material

Abstract

The invention relates to the technical field of civil engineering materials, in particular to an asphalt pavement crack trenchless grouting material and a preparation method thereof.The asphalt pavement crack trenchless grouting material comprises a high-permeability chemical expansion gel grouting material, and mineral powder is added into the high-permeability chemical expansion gel grouting material; dioctyl adipate is added into the high-permeability chemical expansion gel grouting material, and sodium hydroxide is added into the high-permeability chemical expansion gel grouting material. According to the device, in the movement process of a first moving plate, a scraping ring can scrape off raw materials attached to the inner wall of the material box, the raw materials are prevented from remaining and caking on the wall face, when a cylindrical cam rotates, through a turn-back groove formed in the surface, a driven rod drives a second moving plate to do reciprocating rectilinear motion under limiting of an outer limiting frame, and therefore the raw materials are prevented from being scraped off. And the arc-shaped ring and the elastic ball are driven to continuously knock the surface of the discharging pipe, raw material attachment is avoided, and the construction cost is reduced by reducing raw material loss.

Description

Technical Field

[0001] The present invention relates to the technical field of civil engineering materials, and particularly to a non-excavation grouting material for asphalt pavement cracks and a preparation method thereof. Background Art

[0002] During the use of asphalt pavement, various cracks will occur under the influence of various factors such as vehicle loads and natural environments. If these cracks are not repaired in time, it will lead to further damage to the road surface, affecting the service life of the road and driving safety. Traditional crack repair methods mostly adopt local patching or caulking; However, these methods have a long construction period, a great impact on traffic, and limited repair effects. Therefore, the development of a non-excavation grouting material and its preparation method is of great significance for improving the crack repair efficiency, reducing construction costs, and reducing the impact on traffic. Summary of the Invention

[0003] Therefore, the present invention provides a non-excavation grouting material for asphalt pavement cracks and a preparation method thereof to solve the above problems.

[0004] The present invention provides the following technical solutions: A non-excavation grouting material for asphalt pavement cracks, including a highly permeable chemical expansion gel grouting material, wherein mineral powder is added to the highly permeable chemical expansion gel grouting material, dioctyl adipate is added to the highly permeable chemical expansion gel grouting material, and sodium hydroxide is added to the highly permeable chemical expansion gel grouting material.

[0005] As a preferred solution of the present invention, the particle size of the mineral powder is 100 - 300 mesh, the addition amount of dioctyl adipate is 5% - 15% of the mass of the highly permeable chemical expansion gel grouting material, and the addition amount of sodium hydroxide is 0.5% - 5% of the mass of the highly permeable chemical expansion gel grouting material.

[0006] As a preferred solution of the present invention, a preparation method of a non-excavation grouting material for asphalt pavement cracks includes the following steps: Step 1: Stir the polyurethane prepolymer and the curing agent evenly by a mixer according to a certain ratio; Step 2: Add appropriate amounts of auxiliary materials such as catalysts, plasticizers, and fillers to the mixture according to needs, and continue to stir evenly; Step 3: Load the prepared grouting material into a grouting device and prepare for grouting construction.

[0007] As a preferred embodiment of the present invention, the mixer in the first step further includes a base frame. A material box is fixedly connected to the top of the base frame. The base frame is placed on the ground. An upper cover plate is fixedly connected to the top of the material box. A stirring blade is rotatably connected to the inner wall of the upper cover plate. A servo motor is fixedly connected to the top of the upper cover plate. The output end of the servo motor is fixedly connected to the top of the stirring blade through a coupling.

[0008] As a preferred embodiment of the present invention, a threaded rod is rotatably connected to the inner wall of the upper cover plate. A first moving plate is threadedly connected to the surface of the threaded rod. The number of the first moving plates is two. The two first moving plates are symmetrically distributed left and right. A scraping ring is fixedly connected to the outside of the first moving plate. The surface of the scraping ring is slidably connected to the inner wall of the material box. A connecting rod is slidably connected to the inner wall of the right first moving plate. The surface of the connecting rod is fixedly connected to the inner wall of the upper cover plate. A feed pipe is fixedly connected to the right side of the material box. The feed pipe is communicated with the inside of the material box.

[0009] As a preferred embodiment of the present invention, a lower cover plate is fixedly connected to the bottom of the material box. First support plates are fixedly connected to both the left and right sides of the bottom of the material box. A first rotating rod is rotatably connected to the inner wall of the first support plate. A discharge pipe is fixedly connected to the bottom of the lower cover plate. The inner wall of the discharge pipe is rotatably connected to the surface of the first rotating rod. An impeller is fixedly sleeved on the surface of the first rotating rod. Second support plates are fixedly connected to both the top and bottom of the left side of the material box. A second rotating rod is rotatably connected to the inner wall of the second support plate. A first bevel gear is fixedly connected to the bottom of the second rotating rod. A second bevel gear is fixedly connected to the left side of the first rotating rod. The first bevel gear meshes with the second bevel gear. A first synchronous wheel is fixedly connected to the top of the threaded rod. A second synchronous wheel is fixedly connected to the top of the second rotating rod. A synchronous belt is sleeved on the surfaces of the first synchronous wheel and the second synchronous wheel.

[0010] As a preferred embodiment of the present invention, an electric control water valve is installed on the top of the lower cover plate. A guide plate is fixedly connected to the inner wall of the lower cover plate.

[0011] As a preferred embodiment of the present invention, an outer limit frame is fixedly connected to the bottom of the first support plate. A second moving plate is slidably connected to the inner wall of the outer limit frame. Cylindrical cams are fixedly connected to the surface of the first rotating rod. The number of the cylindrical cams is two. The two cylindrical cams are symmetrically distributed left and right.

[0012] As a preferred embodiment of the present invention, a driven rod is fixedly connected to the top of the second moving plate. A return groove that is connected end to end is formed on the surface of the cylindrical cam. The driven rod is slidably connected to the groove wall of the return groove. An arc-shaped ring is fixedly connected to the inner surface of the second moving plate, and an elastic ball is installed on the inner wall of the arc-shaped ring.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: In the present invention, through the synchronous belt provided, the second synchronous wheel and the first synchronous wheel rotate synchronously, driving the first moving plate threadedly connected thereto to move linearly along the inner wall of the feed bin. Since a scraping ring is fixedly connected to the outside of the first moving plate and the surface of the scraping ring is slidably connected to the inner wall of the feed bin, during the movement of the first moving plate, the scraping ring can scrape off the raw materials adhering to the inner wall of the feed bin, preventing the raw materials from remaining and caking on the wall surface. When the cylindrical cam rotates, through the return groove provided on the surface, the driven rod drives the second moving plate to perform a reciprocating linear motion under the limitation of the outer limiting frame, driving the arc-shaped ring and the elastic ball to continuously knock on the surface of the discharge pipe, avoiding the adhesion of raw materials, and reducing the construction cost by reducing the loss of raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a flow chart of the preparation method of the present invention; Figure 2 is a schematic structural diagram of the mixer in the present invention; Figure 3 is a schematic bottom view of the mixer structure in the present invention; Figure 4 is a schematic internal view of the mixer structure in the present invention; Figure 5 For the present invention Figure 4 is a schematic structural diagram of the deflector; Figure 6 For the present invention Figure 3 is an enlarged view of part A in the present invention.

[0015] In the figure: 101, feed bin; 102, upper cover plate; 103, base frame; 104, feed pipe; 105, servo motor; 106, lower cover plate; 107, discharge pipe; 108, first rotating rod; 109, second support plate; 110, second rotating rod; 111, second synchronous wheel; 112, synchronous belt; 113, first synchronous wheel; 114, threaded rod; 115, first moving plate; 116, scraping ring; 117, connecting rod; 118, stirring blade; 119, electric control water valve; 120, first support plate; 121, deflector; 122, impeller; 123, first bevel gear; 124, second bevel gear; 125, cylindrical cam; 126, return groove; 127, driven rod; 128, second moving plate; 129, outer limiting frame; 130, arc-shaped ring; 131, elastic ball. Detailed implementation manners

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0017] Please refer to Figures 1-6 , the technical solutions provided by the present invention specifically include the following embodiments: Embodiment: A trenchless grouting material for asphalt pavement cracks, comprising a highly permeable chemical expansion gel grouting material, wherein mineral powder is added to the highly permeable chemical expansion gel grouting material, dioctyl adipate is added to the highly permeable chemical expansion gel grouting material, and sodium hydroxide is added to the highly permeable chemical expansion gel grouting material.

[0018] The particle size of the mineral powder is 100 - 300 mesh, the addition amount of dioctyl adipate is 5% - 15% of the mass of the highly permeable chemical expansion gel grouting material, and the addition amount of sodium hydroxide is 0.5% - 5% of the mass of the highly permeable chemical expansion gel grouting material; As the core component, the high - permeability chemical expansion gel grouting material has unique penetration performance. Its molecular structure contains a large number of active groups, which can chemically react with the tiny pores and crack surfaces around the asphalt pavement cracks to form chemical bonding. At the same time, the low viscosity and high fluidity of the material enable it to quickly penetrate deep into the cracks under pressure, fill and seal the cracks, prevent the further intrusion of moisture and other harmful substances, and thus prevent the further expansion of the cracks. Mineral powder with a particle size of 100 - 300 meshes plays a role in enhancing and stabilizing the grouting material. On the one hand, the mineral powder particles can fill the micro - pores of the high - permeability chemical expansion gel grouting material, increasing the density of the material and improving its compressive strength and abrasion resistance. On the other hand, the mineral powder undergoes physical and chemical reactions with other components in the grouting material to form a more stable structure, enhancing the adhesiveness and durability of the material, ensuring that the repaired cracks can remain stable for a long time. Dioctyl adipate is added to the grouting material as a plasticizer, which can reduce the glass transition temperature of the material, increase the flexibility and plasticity of the molecular chain. During the curing process of the grouting material, the dioctyl adipate molecules can insert between the polymer molecular chains, weakening the intermolecular forces, so that the material can still maintain a certain flexibility after curing. This flexibility is crucial for asphalt pavements because the pavement will be deformed under the influence of factors such as vehicle loads and temperature changes during use. The grouting material with good flexibility can better adapt to these deformations and avoid the recurrence of cracks caused by material embrittlement. Sodium hydroxide acts as a catalyst in the grouting material, which can accelerate the chemical reactions in the high - permeability chemical expansion gel grouting material. It can lower the activation energy of the reaction, enabling the reaction to be completed quickly under lower temperature and pressure conditions, thus shortening the curing time of the grouting material and improving the construction efficiency. At the same time, sodium hydroxide can also adjust the pH value of the grouting material, creating a chemical environment conducive to chemical reactions and ensuring the stable performance of the grouting material.

[0019] A preparation method for a trenchless grouting material for asphalt pavement cracks, using a trenchless grouting material for asphalt pavement cracks, includes the following steps: Step 1: Stir the polyurethane prepolymer and the curing agent evenly according to a certain ratio using a stirrer; the ratio of the polyurethane prepolymer to the curing agent is 100:40. Step 2: According to needs, add appropriate amounts of auxiliary materials such as catalysts, plasticizers, and fillers to the mixture, and continue to stir evenly. Step 3: Load the prepared grouting material into the grouting equipment and prepare for grouting construction.

[0020] The blender in Step 1 further includes a base frame 103. A material box 101 is fixedly connected to the top of the base frame 103. The base frame 103 is placed on the ground. An upper cover plate 102 is fixedly connected to the top of the material box 101. A stirring blade 118 is rotatably connected to the inner wall of the upper cover plate 102. A servo motor 105 is fixedly connected to the top of the upper cover plate 102. The output end of the servo motor 105 is fixedly connected to the top of the stirring blade 118 through a coupling. A threaded rod 114 is rotatably connected to the inner wall of the upper cover plate 102. A first moving plate 115 is threadedly connected to the surface of the threaded rod 114. The number of the first moving plates 115 is two. The two first moving plates 115 are symmetrically distributed left and right. A scraping ring 116 is fixedly connected to the outside of the first moving plate 115. The surface of the scraping ring 116 is slidably connected to the inner wall of the material box 101. A connecting rod 117 is slidably connected to the inner wall of the right first moving plate 115. The surface of the connecting rod 117 is fixedly connected to the inner wall of the upper cover plate 102. A feed pipe 104 is fixedly connected to the right side of the material box 101. The feed pipe 104 is communicated with the inside of the material box 101. A lower cover plate 106 is fixedly connected to the bottom of the material box 101. First support plates 120 are fixedly connected to both the left and right sides of the bottom of the material box 101. A first rotating rod 108 is rotatably connected to the inner wall of the first support plate 120. A discharge pipe 107 is fixedly connected to the bottom of the lower cover plate 106. The inner wall of the discharge pipe 107 is rotatably connected to the surface of the first rotating rod 108. An impeller 122 is fixedly sleeved on the surface of the first rotating rod 108. Second support plates 109 are fixedly connected to both the top and bottom of the left side of the material box 101. A second rotating rod 110 is rotatably connected to the inner wall of the second support plate 109. A first bevel gear 123 is fixedly connected to the bottom of the second rotating rod 110. A second bevel gear 124 is fixedly connected to the left side of the first rotating rod 108. The first bevel gear 123 is meshed with the second bevel gear 124. A first synchronous wheel 113 is fixedly connected to the top of the threaded rod 114. A second synchronous wheel 111 is fixedly connected to the top of the second rotating rod 110. A synchronous belt 112 is sleeved on the surfaces of the first synchronous wheel 113 and the second synchronous wheel 111. An electric control water valve 119 is installed on the top of the lower cover plate 106. A guide plate 121 is fixedly connected to the inner wall of the lower cover plate 106. An outer limit frame 129 is fixedly connected to the bottom of the first support plate 120. A second moving plate 128 is slidably connected to the inner wall of the outer limit frame 129. Cylindrical cams 125 are fixedly connected to the surface of the first rotating rod 108. The number of the cylindrical cams 125 is two. The two cylindrical cams 125 are symmetrically distributed left and right. A driven rod 127 is fixedly connected to the top of the second moving plate 128. A folded-back groove 126 that is connected end to end is formed on the surface of the cylindrical cam 125. The driven rod 127 is slidably connected to the groove wall of the folded-back groove 126. An arc-shaped ring 130 is fixedly connected to the inner surface of the second moving plate 128. An elastic ball 131 is installed on the inner wall of the arc-shaped ring 130; The side walls of the threaded rod 114 and the connecting rod 117 are coated with a paint that is not prone to sticking. This paint is a silane coupling agent, which can form a chemical bond with the metal surface to form a firm protective film. This film has good liquid repellency, can reduce the surface energy of the metal surface, making it difficult for mucus to adhere. At the same time, it can also improve the adhesion between the paint and the metal surface.

[0021] The stirring blade 118 in the mixer rotates at a high speed driven by the servo motor 105. The servo motor 105 transmits power to the stirring blade 118 through a coupling, enabling it to generate a strong shearing force and mixing force. After various raw materials are added to the feed tank 101, the rotation of the stirring blade 118 can fully stir and mix components such as high-permeability chemical expansion gel grouting material, mineral powder, dioctyl adipate, and sodium hydroxide, ensuring that various components are evenly distributed in the grouting material, thereby guaranteeing the performance consistency of the grouting material. After the stirring is completed, through the mutual cooperation of the electric control water valve 119 installed at the top of the lower cover plate 106 and the deflector plate 121 fixedly connected to the inner wall, precise control of the discharging process is achieved. The electric control water valve 119 can precisely control the opening and closing degree of the discharging pipe 107 according to the construction requirements, thereby adjusting the outflow speed of the grouting material. The deflector plate 121 can guide the outflowing grouting material to a designated position, and the liquid drives the impeller 122 to rotate, causing the first rotating rod 108 to rotate, enabling the second bevel gear 124 to drive the first bevel gear 123 to rotate, causing the second rotating rod 110 to rotate, and thus causing the second synchronous wheel 111 to rotate. Through the provided synchronous belt 112, the second synchronous wheel 111 and the first synchronous wheel 113 rotate synchronously, driving the first moving plate 115 threadedly connected thereto to move linearly along the inner wall of the feed tank 101. Since a scraping ring 116 is fixedly connected to the outer side of the first moving plate 115 and the surface of the scraping ring 116 is slidably connected to the inner wall of the feed tank 101, during the movement of the first moving plate 115, the scraping ring 116 can scrape off the raw materials adhering to the inner wall of the feed tank 101, preventing the raw materials from remaining and caking on the wall surface. When the cylindrical cam 125 rotates, through the return groove 126 provided on the surface, the driven rod 127 drives the second moving plate 128 to perform a reciprocating linear motion under the limitation of the outer limit frame 129, driving the arc-shaped ring 130 and the elastic ball 131 to continuously knock on the surface of the discharging pipe 107, avoiding the adhesion of raw materials, and reducing the construction cost by reducing the loss of raw materials.

[0022] When the non-excavation grouting material for asphalt pavement cracks and its preparation method in this solution are working, the high-permeability chemical expansion gel grouting material, as the core component, has unique permeability. Its molecular structure contains a large number of active groups, which can chemically react with the tiny pores and crack surfaces around the asphalt pavement cracks to form chemical bonding. At the same time, the low viscosity and high fluidity of the material enable it to quickly penetrate deep into the cracks under pressure, fill and seal the cracks, prevent the further intrusion of moisture and other harmful substances, and thus prevent the further expansion of the cracks. The mineral powder with a particle size of 100 - 300 mesh plays a role in enhancing and stabilizing the grouting material. On the one hand, the mineral powder particles can fill the microscopic pores of the high-permeability chemical expansion gel grouting material, increase the density of the material, and improve its compressive strength and abrasion resistance. On the other hand, the mineral powder undergoes physical and chemical reactions with other components in the grouting material to form a more stable structure, enhancing the adhesiveness and durability of the material, and ensuring that the repaired cracks can remain stable for a long time. Dioctyl adipate is added to the grouting material as a plasticizer, which can lower the glass transition temperature of the material, increase the flexibility and plasticity of the molecular chain. During the curing process of the grouting material, the dioctyl adipate molecules can insert between the polymer molecular chains, weakening the intermolecular forces, so that the material can still maintain a certain flexibility after curing. This flexibility is crucial for asphalt pavement because the pavement will deform under the influence of factors such as vehicle load and temperature change during use. The grouting material with good flexibility can better adapt to these deformations and avoid the recurrence of cracks caused by material embrittlement. Sodium hydroxide acts as a catalyst in the grouting material, which can accelerate the chemical reactions in the high-permeability chemical expansion gel grouting material. It can lower the activation energy of the reaction, enabling the reaction to be quickly completed under lower temperature and pressure conditions, thereby shortening the curing time of the grouting material and improving the construction efficiency. At the same time, sodium hydroxide can also adjust the pH value of the grouting material, create a chemical environment conducive to chemical reactions, and ensure the stable performance of the grouting material; The stirring blade 118 in the mixer rotates at a high speed driven by the servo motor 105. The servo motor 105 transmits power to the stirring blade 118 through a coupling, generating a strong shearing force and mixing force. When various raw materials are added to the feed hopper 101, the rotation of the stirring blade 118 can fully stir and mix components such as the high-permeability chemical expansion gel grouting material, mineral powder, dioctyl adipate, and sodium hydroxide evenly, ensuring the uniform distribution of various components in the grouting material, and thus guaranteeing the performance consistency of the grouting material; After the stirring is completed, the electric control water valve 119 installed at the top of the lower cover plate 106 and the flow guide plate 121 fixedly connected to the inner wall cooperate with each other to achieve precise control of the discharging process. The electric control water valve 119 can precisely control the opening and closing degree of the discharging pipe 107 according to the construction requirements, thereby adjusting the outflow speed of the grouting material. The flow guide plate 121 can guide the outflowing grouting material to a specified position; The liquid drives the impeller 122 to rotate, causing the first rotating rod 108 to rotate, causing the second bevel gear 124 to drive the first bevel gear 123 to rotate, causing the second rotating rod 110 to rotate, and thus causing the second synchronous pulley 111 to rotate. Through the provided synchronous belt 112, the second synchronous pulley 111 and the first synchronous pulley 113 rotate synchronously, driving the first moving plate 115 threadedly connected thereto to move linearly along the inner wall of the material box 101. Since a scraping ring 116 is fixedly connected to the outer side of the first moving plate 115 and the surface of the scraping ring 116 is slidably connected to the inner wall of the material box 101, during the movement of the first moving plate 115, the scraping ring 116 can scrape off the raw materials adhering to the inner wall of the material box 101, preventing the raw materials from remaining and caking on the wall surface. When the cylindrical cam 125 rotates, through the return groove 126 provided on the surface, the driven rod 127 drives the second moving plate 128 to perform a reciprocating linear motion under the limitation of the outer limiting frame 129, driving the arc-shaped ring 130 and the elastic ball 131 to continuously knock on the surface of the discharging pipe 107 to avoid raw material adhesion, and reducing the construction cost by reducing the raw material loss.

[0023] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and deformations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A non-excavation grouting material for asphalt pavement cracks, characterized in that: It includes a highly permeable chemical expansion gel grouting material, in which mineral powder is added, dioctyl adipate is added, and sodium hydroxide is added.

2. The non-excavation grouting material for asphalt pavement cracks according to claim 1, characterized in that: The particle size of the mineral powder is 100 - 300 mesh, the addition amount of dioctyl adipate is 5% - 15% of the mass of the highly permeable chemical expansion gel grouting material, and the addition amount of sodium hydroxide is 0.5% - 5% of the mass of the highly permeable chemical expansion gel grouting material.

3. A preparation method of a non-excavation grouting material for asphalt pavement cracks, using a non-excavation grouting material for asphalt pavement cracks described in any one of claims 1-2, characterized in that: It includes the following steps: Step 1: Stir the polyurethane prepolymer and the curing agent evenly by a mixer according to a certain ratio. Step 2: According to needs, add appropriate amounts of auxiliary materials such as catalysts, plasticizers, and fillers to the mixed liquid, and continue to stir evenly. Step 3: Load the prepared grouting material into the grouting equipment and prepare for grouting construction.

4. A method for preparing a non-excavation grouting material for asphalt pavement cracks according to claim 3, characterized in that: The mixer in the said Step 1 further includes a base frame (103), the top of the base frame (103) is fixedly connected with a material box (101), the base frame (103) is placed on the ground, the top of the material box (101) is fixedly connected with an upper cover plate (102), the inner wall of the upper cover plate (102) is rotatably connected with a stirring blade (118), the top of the upper cover plate (102) is fixedly connected with a servo motor (105), and the output end of the servo motor (105) is fixedly connected with the top of the stirring blade (118) through a coupling.

5. A method for preparing a non-excavation grouting material for asphalt pavement cracks according to claim 4, characterized in that: The inner wall of the upper cover plate (102) is rotatably connected with a threaded rod (114), the surface of the threaded rod (114) is threadedly connected with a first moving plate (115), the number of the first moving plates (115) is two, the two first moving plates (115) are symmetrically distributed left and right, the outside of the first moving plate (115) is fixedly connected with a scraping ring (116), the surface of the scraping ring (116) is slidably connected with the inner wall of the material box (101), the inner wall of the right first moving plate (115) is slidably connected with a connecting rod (117), the surface of the connecting rod (117) is fixedly connected with the inner wall of the upper cover plate (102), and the right side of the material box (101) is fixedly connected with a feed pipe (104), and the feed pipe (104) is communicated with the inside of the material box (101).

6. The preparation method of a non-excavation grouting material for asphalt pavement cracks according to claim 5, characterized in that: A lower cover plate (106) is fixedly connected to the bottom of the material box (101). First support plates (120) are fixedly connected to both the left and right sides of the bottom of the material box (101). A first rotating rod (108) is rotatably connected to the inner wall of the first support plate (120). An outlet pipe (107) is fixedly connected to the bottom of the lower cover plate (106). The inner wall of the outlet pipe (107) is rotatably connected to the surface of the first rotating rod (108). An impeller (122) is fixedly sleeved on the surface of the first rotating rod (108). Second support plates (109) are fixedly connected to both the top and bottom of the left side of the material box (101). A second rotating rod (110) is rotatably connected to the inner wall of the second support plate (109). A first bevel gear (123) is fixedly connected to the bottom of the second rotating rod (110). A second bevel gear (124) is fixedly connected to the left side of the first rotating rod (108). The first bevel gear (123) meshes with the second bevel gear (124). A first synchronous pulley (113) is fixedly connected to the top of the threaded rod (114). A second synchronous pulley (111) is fixedly connected to the top of the second rotating rod (110). A synchronous belt (112) is sleeved on the surfaces of the first synchronous pulley (113) and the second synchronous pulley (111).

7. A method for preparing a non-excavation grouting material for asphalt pavement cracks according to claim 6, characterized in that: An electric control water valve (119) is installed on the top of the lower cover plate (106). A guide plate (121) is fixedly connected to the inner wall of the lower cover plate (106).

8. A preparation method of a non-excavation grouting material for asphalt pavement cracks according to claim 6, characterized in that: An outer limit frame (129) is fixedly connected to the bottom of the first support plate (120). A second moving plate (128) is slidably connected to the inner wall of the outer limit frame (129). Cylindrical cams (125) are fixedly connected to the surface of the first rotating rod (108). The number of the cylindrical cams (125) is two, and the two cylindrical cams (125) are symmetrically distributed left and right.

9. A method for preparing a non-excavation grouting material for asphalt pavement cracks according to claim 8, characterized in that: A driven rod (127) is fixedly connected to the top of the second moving plate (128). A return groove (126) that is connected end to end is formed on the surface of the cylindrical cam (125). The driven rod (127) is slidably connected to the groove wall of the return groove (126). An arc-shaped ring (130) is fixedly connected to the inner surface of the second moving plate (128). An elastic ball (131) is installed on the inner wall of the arc-shaped ring (130).

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