Paving equipment suitable for quickly curing high polymer material

Abstract

The invention discloses paving equipment suitable for rapidly curing a high polymer material, and belongs to the technical field of road surface repairing, the paving equipment comprises a rack, a spiral material distribution structure, a vibration compaction structure and a knurling structure, the spiral material distribution structure comprises a barrel, a spiral material distribution piece is installed outside the barrel, a spiral groove for conveying materials is formed by the spiral material distribution piece, and the vibration compaction structure and the knurling structure are arranged on the rack. A temperature sensor and a two-way temperature control structure are arranged in the cylinder body, the two-way temperature control structure comprises a heating unit and a refrigerating unit, two-way temperature control of heating and cooling can be conducted through the two-way temperature control structure, and compared with the prior art, the polyurethane concrete paving device is more suitable for paving of polyurethane concrete; the problems that in the prior art, a paver is mainly suitable for asphalt paving and cannot adapt to the rapid curing characteristic of a polyurethane concrete material, paving is not uniform easily, and the paving quality is poor are solved.

Description

Technical Field

[0001] The invention relates to the technical field of road repair, and in particular to a paving device suitable for fast-curing polymer materials. Background Art

[0002] With the development of transportation and civil aviation, the original airport design standard load requirements have increased, and the long-term use of the road surface has caused damage, such as road slab fractures, broken joints, local potholes, pitted surfaces and other road surface problems. In addition, the climate is warming and the temperature is rising, which has caused the structural bearing capacity to decay and the performance to decrease. The most common practice for large-scale maintenance of airport concrete pavements, especially to increase the load of the pavement, is to add a certain thickness of cement or asphalt concrete overlay layer on the surface of the old pavement, which is usually called "covering" or "overlay". When overlaying asphalt on the airport pavement, the surface layer is generally divided into three layers, which are the upper layer, the middle layer, and the lower layer from top to bottom, and the total thickness is controlled at about 20 cm. One typical overlay structure is 5 cm thick SMA-13 ​​asphalt concrete + 6.5 cm thick AC-13 + 6.5 cm thick AC-13 from top to bottom, with a total thickness of 18 cm. Asphalt concrete overlay needs to be completed in three stages, with a long cycle and cumbersome methods. At the same time, due to the material properties of asphalt, after a period of operation at the airport, it is easy to loosen, water damage, wheel rutting and other diseases, and even serious peeling diseases, which pose certain safety hazards. For example, at an airport in central China, a 3200m×45m runway was paved with a 21cm asphalt blanket, with a total area of ​​144,000㎡. The flight was suspended for 126 days for construction. Soon after it was put into operation, it began to suffer from diseases such as bulging and shifting. At an airport in Brazil, long-term high temperature and heavy rain caused the runway to delaminate. When the aircraft took off, the instantaneous negative pressure rolled up a large area of ​​the asphalt layer, causing damage to the tail of the aircraft, seriously threatening the safe operation of the airport. If cement concrete blanket is used, due to the long hardening and condensation time of cement concrete, a 28-day curing cycle is required according to the specification, and it is impossible to achieve non-stop construction. The temperature for asphalt overlay is usually 160℃, and the temperature for cement concrete overlay should be controlled above 5℃ and below 35℃. This temperature condition greatly limits the construction time in high-latitude areas, making the construction period in high-latitude areas shorter. In winter, when the temperature is low, cement concrete cannot be fully hydrated, and asphalt cannot be constructed; when asphalt is overlaid, the bonding force is low, the material strength and elastic modulus are far different, and when concrete is overlaid, the new and old layers cannot be superimposed. Therefore, neither of them can bond with the original road surface to form an integrated overall performance.

[0003] With the advancement of science and technology, a thin-layer paving process for repairing airport prefabricated road slabs with fast on-site assembly without stopping flights has emerged. Its new polymer material can penetrate into the pores and cracks of concrete, and play a role in penetrating, repairing and strongly bonding the original road surface. At the same time, in order not to affect the normal operation of the airport and achieve environmentally friendly, fast and large-scale delivery, it is necessary to invent a polymer concrete, preferably polyurethane concrete material for thin-layer paving, which can quickly, intelligently, accurately and environmentally solve the problem of fast, intelligent, accurate and environmentally friendly airport pavement manufacturing and repair.

[0004] However, the existing paving equipment is mainly used for the paving construction of cement concrete and asphalt materials. Its working principle and structural characteristics are not suitable for the special properties of polyurethane concrete, such as faster curing time, different fluidity characteristics, etc. This leads to problems such as uneven paving and shortened construction window due to rapid curing when using traditional equipment for polyurethane concrete paving, which in turn affects the overall quality and progress of the project.

[0005] For example, the "screw distributor and its paver" disclosed in the Chinese patent literature has a publication number of CN103526671B. The screw distributor includes a screw case, a screw shaft, a screw blade and a baffle plate. The screw case includes a case body and a transverse arm. The screw blade is fixed on the screw shaft. It also includes two interchangeable connection devices arranged in a mirror image. The interchangeable connection device includes: a horizontal plate with a side plate surface detachably connected to the top surface of the baffle plate; a first longitudinal plate and a second longitudinal plate arranged on a side plate surface of the horizontal plate where the baffle plate is not installed and parallel to each other, the first longitudinal plate is detachably connected to the lifting cylinder of the paver, and the second longitudinal plate is detachably connected to one end of the transverse arm; and a back plate arranged on one side of the horizontal plate along the length direction, and the back plate is detachably connected to the rear wall plate of the paver. The shortcoming of this patent is that, as an existing relatively conventional paver, this patent is mainly used for asphalt paving. Its structure is also designed for asphalt materials, and it cannot adapt to the characteristics of rapid curing of polyurethane concrete, which leads to uneven paving and poor paving quality. Summary of the invention

[0006] The present invention aims to overcome the problem that the paving machines in the prior art are mainly suitable for asphalt paving and cannot adapt to the rapid curing characteristics of polyurethane concrete materials, which easily leads to uneven paving and poor paving quality. A paving equipment suitable for rapid curing polymer materials is provided to improve the quality of polyurethane concrete paving.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: The present invention provides a paving device suitable for fast-curing polymer materials, comprising a frame, a spiral material distribution structure, a vibration compaction structure, and a knurling structure. The spiral material distribution structure comprises a cylinder, a spiral material distribution sheet is installed on the outside of the cylinder, and the spiral material distribution sheet forms a spiral groove for transporting materials. A temperature sensor and a two-way temperature control structure are arranged in the cylinder, and the two-way temperature control structure comprises a heating unit and a refrigeration unit. The knurling structure comprises a knurling bracket and a knurling cylinder.

[0008] The paving equipment in the prior art is mainly asphalt paving equipment. Due to the different characteristics of asphalt and polyurethane concrete, there are many differences in the target setting of the two during the paving process. During the asphalt paving process, the temperature control target is mainly to prevent the asphalt from solidifying, so it is only necessary to simply maintain a high temperature. As for polyurethane concrete, the heating of polyurethane concrete will accelerate its curing process. Therefore, it is necessary to keep its temperature within a certain range, avoiding the situation where the temperature is too low and its fluidity decreases, thereby affecting the paving process, and avoiding the situation where it is overheated and solidifies too quickly, resulting in a short construction window. Therefore, the present application can perform two-way temperature control of heating and cooling through a two-way temperature control structure, which is more suitable for the paving of polyurethane concrete than the prior art.

[0009] Preferably, the barrel includes a temperature control layer, the heating unit and the refrigeration unit are arranged on the temperature control layer, and a heat-conducting sleeve is arranged outside the temperature control layer. The heat-conducting sleeve can separate the material from the heating unit and the refrigeration unit, the refrigeration unit is a semiconductor refrigeration sheet, and the heating unit is a heating wire.

[0010] Preferably, the spiral material distribution structure includes at least two independent temperature control sections in the direction of transporting materials, and the temperature control section includes a front section and a rear section. The material enters the spiral material distribution structure from the front section, and the temperature of the rear section is greater than that of the front section.

[0011] Preferably, the temperature control section also includes a middle section, and the temperature of the middle section is between the front section and the rear section.

[0012] Preferably, the temperature of the front section is between 15-20°C, the temperature of the middle section is between 25±2°C, and the temperature of the rear section is between 30-35°C.

[0013] Preferably, a paving box is mounted on the frame, and the vibration compaction structure is hingedly connected to the paving box via an articulated bracket.

[0014] Preferably, a pressure device is installed on the knurled bracket, and the pressure device is a pressure-regulating oil cylinder or a pressure-regulating electric cylinder.

[0015] Preferably, the spiral material distribution structure includes a front material distribution area and a rear material distribution area, and the pitch of the spiral material distribution piece in the front material distribution area is greater than the pitch of the spiral material distribution piece in the rear material distribution area. The large pitch in the front can accelerate the material distribution process, and the small pitch in the rear can finely distribute the material.

[0016] Preferably, the vibration compaction structure comprises a dual-frequency vibration structure, and the dual-frequency vibration structure comprises a high-frequency exciter and a low-frequency exciter. High-frequency vibration can quickly improve surface density, and low-frequency vibration can enhance penetration effect.

[0017] Preferably, a gradient temperature control module is provided inside the knurling cylinder, and a temperature gradient decreasing from the center to the edge is formed on the surface of the knurling cylinder. The gradient heating module can use the temperature difference to control the fluidity of the material and optimize the texture forming.

[0018] Therefore, the present invention has the following beneficial effects: (1) it can perform two-way temperature control of heating and cooling, and is more suitable for the paving of polyurethane concrete than the prior art; (2) through two material distribution areas with different pitches, the material distribution process can be accelerated at the front, and the material can be finely leveled at the rear, thereby accelerating the paving process, which is more suitable for the rapid curing characteristics of polyurethane concrete; (3) through dual-frequency vibration, the surface density can be quickly improved and the penetration effect can be enhanced, which is more suitable for the high permeability characteristics of polyurethane concrete and can also accelerate the vibration compaction process; (4) through the gradient temperature control module, the temperature difference is used to control the fluidity of the material and optimize the texture forming. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 It is a front view schematic diagram of the present invention.

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

[0022] Figure 4 It is a structural schematic diagram of the knurling cylinder of the present invention.

[0023] Figure 5 It is a structural schematic diagram of the temperature control layer of the present invention.

[0024] In the figure: sliding shoe 1, spreading box 2, spiral material distribution structure 3, telescopic device 4, rotating handle 5, hinged bracket 6, vibration compaction structure 7, pressure device 8, knurling structure 9, knurling nail 10, semiconductor cooling sheet 11, heating wire 12. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] Embodiment 1, as Figure 1-5 As shown, a paving device suitable for fast-curing polymer materials includes a frame, a spiral material distribution structure 3, a vibration compaction structure 7, and a knurling structure 9.

[0027] The frame includes a support base, and a sliding shoe 1 is provided at the bottom of the support base. The sliding shoe 1 can realize the pushing of the frame as a whole. The sliding shoe 1 can be replaced by other structures that can realize the supporting and fixing functions, such as a disc-shaped support foot; in a construction environment with high flatness, it can also be replaced by a structure with moving and fixing functions, such as a roller structure with a brake.

[0028] A paving box 2 is installed on the frame, and the paving box 2 is mainly used to accommodate the polyurethane concrete to be paved. The spiral material distribution structure 3, the vibration compaction structure 7, and the knurling structure 9 are all directly or indirectly fixed on the paving box 2. A telescopic device 4 is installed on the paving box 2, and the telescopic device 4 can adjust the height of the paving box 2 relative to the ground by telescoping, thereby controlling the thickness of the polyurethane concrete paving. The telescopic device 4 includes a rotating handle 5, and the user can adjust the height of the paving box 2 by twisting the rotating handle 5.

[0029] The spiral material distribution structure 3 includes a cylinder, which can rotate in the paving box 2, and its rotation process is controlled by the material distribution motor. A spiral material distribution sheet is installed on the outside of the cylinder, and a plurality of spiral material distribution sheets form a spiral groove for conveying materials. When the cylinder rotates, the spiral groove can convey the materials from the inlet and pave.

[0030] Furthermore, the cylinder is provided with two material dividing sections distributed on the left and right and with the same length. The spiral material dividing pieces on the two material dividing sections have the same pitch but opposite rotation directions. When the cylinder rotates, the two material dividing sections respectively transport the materials added from the two ends of the cylinder to the middle of the cylinder. Compared with the structure of non-segmented unidirectional transportation, this structure has faster transportation efficiency and is more suitable for the rapid curing characteristics of polyurethane concrete.

[0031] The space in the paving box 2 is divided into a front material distribution area and a rear material distribution area. Each of the two material distribution areas is provided with a cylinder. The cylinders in the two material distribution areas have the same height and are arranged parallel to each other. The pitch of the spiral material distribution piece in the front material distribution area is greater than the pitch of the spiral material distribution piece in the rear material distribution area. Furthermore, the pitch of the spiral material distribution piece in the front material distribution area is 1.5-2 times the pitch of the spiral material distribution piece in the rear material distribution area. The large pitch in the front can accelerate the material distribution process, and the small pitch in the rear can finely level the material. Paving by sections also accelerates the paving process, which is more suitable for the rapid curing characteristics of polyurethane concrete.

[0032] The cylinder is provided with a temperature sensor and a bidirectional temperature control structure, the bidirectional temperature control structure includes a heating unit and a refrigeration unit, the cylinder includes a temperature control layer, the heating unit and the refrigeration unit are arranged on the temperature control layer, and a heat conductive sleeve is arranged on the outside of the temperature control layer. The heat conductive sleeve can separate the material from the heating unit and the refrigeration unit, which not only plays a role in heat transfer, but also prevents the material from adhering to the heating unit and the refrigeration unit. Furthermore, the refrigeration unit is a semiconductor refrigeration sheet 11, and the heating unit is a heating wire 12. There are several semiconductor refrigeration sheets 11, which are distributed in an array on the temperature control layer, and there are gaps between adjacent semiconductor refrigeration sheets 11. The heating wire 12 is arranged in a U shape in the gaps between the semiconductor refrigeration sheets 11.

[0033] The vibrating compaction structure 7 is connected to the paving box 2 via an articulated bracket 6, and performs vibrating compaction on the concrete during the paving process. The articulated bracket is articulated to the paving box 2, ensuring that when the paving box 2 vibrates, the normal operation of the vibrating compaction structure is not disturbed, thereby ensuring the stability and consistency of the compaction effect.

[0034] The knurling structure 9 includes a knurling cylinder, and the surface of the knurling cylinder is provided with an anti-skid structure. The anti-skid structure is a knurling pin 10, and the shape of the knurling pin 10 is a pyramid, that is, a four-sided pyramid structure, which can reduce the extrusion of the polyurethane concrete material to the surroundings during rolling. Preferably, the surface of the knurling cylinder is provided with micro self-cleaning lines, specifically, the micro self-cleaning lines are arranged on the knurling pin 10, and the micro self-cleaning lines are nano lines, for example, nano lines similar to the surface structure of a lotus leaf, so as to reduce polyurethane residue. The material of the knurling cylinder is preferably a fluorine-containing polymer or a ceramic coating is performed on the surface. The material can be specifically selected from, for example, polytetrafluoroethylene, modified ultra-high molecular weight polyethylene, etc., which can reduce the adhesion of polyurethane.

[0035] Furthermore, the knurling structure 9 includes a knurling bracket and a plurality of independently pressurized knurling cylinders, the knurling bracket is equipped with a pressure device 8, the knurling cylinders are coaxially arranged, and each knurling cylinder is connected to the knurling bracket via a pressure device 8 with adjustable pressure, and the pressure device is a pressure-regulating oil cylinder or a pressure-regulating electric cylinder.

[0036] During use, the device of the present application moves along the road surface, and after the polyurethane concrete material is added to the paving box 2, it is paved in the front material section and the rear material section in sequence. Then, high-frequency compaction and low-frequency penetration are performed in sequence at the vibration compaction structure 7. Finally, knurling is performed at the knurling structure 9.

[0037] Embodiment 2, as Figure 1-5 As shown, a paving device suitable for fast-curing polymer materials includes a frame, a spiral material distribution structure 3, a vibration compaction structure 7, and a knurling structure 9.

[0038] The frame includes a support base, and a sliding shoe 1 is provided at the bottom of the support base. The sliding shoe 1 can realize the pushing of the frame as a whole. The sliding shoe 1 can be replaced by other structures that can realize the supporting and fixing functions, such as a disc-shaped support foot; in a construction environment with high flatness, it can also be replaced by a structure with moving and fixing functions, such as a roller structure with a brake.

[0039] A paving box 2 is installed on the frame, and the paving box 2 is mainly used to accommodate the polyurethane concrete to be paved. The spiral material distribution structure 3, the vibration compaction structure 7, and the knurling structure 9 are all directly or indirectly fixed on the paving box 2. A telescopic device 4 is installed on the paving box 2, and the telescopic device 4 can adjust the height of the paving box 2 relative to the ground by telescoping, thereby controlling the thickness of the polyurethane concrete paving. The telescopic device 4 includes a rotating handle 5, and the user can adjust the height of the paving box 2 by twisting the rotating handle 5.

[0040] The spiral material distribution structure 3 includes a cylinder, which can rotate in the paving box 2, and its rotation process is controlled by the material distribution motor. A spiral material distribution sheet is installed on the outside of the cylinder, and a plurality of spiral material distribution sheets form a spiral groove for conveying materials. When the cylinder rotates, the spiral groove can convey the materials from the inlet and pave.

[0041] Furthermore, the cylinder is provided with two material dividing sections distributed on the left and right and with the same length. The spiral material dividing pieces on the two material dividing sections have the same pitch but opposite rotation directions. When the cylinder rotates, the two material dividing sections respectively transport the materials added from the two ends of the cylinder to the middle of the cylinder. Compared with the structure of non-segmented unidirectional transportation, this structure has faster transportation efficiency and is more suitable for the rapid curing characteristics of polyurethane concrete.

[0042] The space in the paving box 2 is divided into a front material distribution area and a rear material distribution area. Each of the two material distribution areas is provided with a cylinder. The cylinders in the two material distribution areas have the same height and are arranged parallel to each other. The pitch of the spiral material distribution piece in the front material distribution area is greater than the pitch of the spiral material distribution piece in the rear material distribution area. Furthermore, the pitch of the spiral material distribution piece in the front material distribution area is 1.5-2 times the pitch of the spiral material distribution piece in the rear material distribution area. The large pitch in the front can accelerate the material distribution process, and the small pitch in the rear can finely level the material. Paving by sections also accelerates the paving process, which is more suitable for the rapid curing characteristics of polyurethane concrete.

[0043] The cylinder is provided with a temperature sensor and a bidirectional temperature control structure, the bidirectional temperature control structure includes a heating unit and a refrigeration unit, the cylinder includes a temperature control layer, the heating unit and the refrigeration unit are arranged on the temperature control layer, and a heat conductive sleeve is arranged on the outside of the temperature control layer. The heat conductive sleeve can separate the material from the heating unit and the refrigeration unit, which not only plays a role in heat transfer, but also prevents the material from adhering to the heating unit and the refrigeration unit. Furthermore, the refrigeration unit is a semiconductor refrigeration sheet 11, and the heating unit is a heating wire 12. There are several semiconductor refrigeration sheets 11, which are distributed in an array on the temperature control layer, and there are gaps between adjacent semiconductor refrigeration sheets 11. The heating wire 12 is arranged in a U shape in the gaps between the semiconductor refrigeration sheets 11.

[0044] The spiral material distribution structure 3 includes at least two independent temperature control sections in the direction of transporting materials. In the present embodiment, the temperature control section includes a front section, a middle section and a rear section. The material enters the spiral material distribution structure 3 from the front section. The temperature of the rear section is greater than the temperature of the front section, and the temperature of the middle section is between the front section and the rear section. Furthermore, the temperature of the front section is between 15-20°C, the temperature of the middle section is between 25±2°C, and the temperature of the rear section is between 30-35°C. When the polyurethane just enters the spiral material distribution structure 3, the low temperature of the front section can delay its curing reaction, thereby avoiding the polyurethane from curing prematurely and being retained at the entrance, and heating it to about 25 degrees Celsius in the middle section can ensure the fluidity of the polyurethane concrete. Further heating in the rear section can improve the leveling of the paving and avoid the accumulation of materials in the rear section.

[0045] The vibrating compaction structure 7 is connected to the paving box 2 via an articulated bracket 6, and performs vibrating compaction on the concrete during the paving process. The articulated bracket is articulated to the paving box 2, ensuring that when the paving box 2 vibrates, the normal operation of the vibrating compaction structure is not disturbed, thereby ensuring the stability and consistency of the compaction effect.

[0046] The knurling structure 9 includes a knurling cylinder, and the surface of the knurling cylinder is provided with an anti-skid structure. The anti-skid structure is a knurling pin 10, and the shape of the knurling pin 10 is a pyramid, that is, a four-sided pyramid structure, which can reduce the extrusion of the polyurethane concrete material to the surroundings during rolling. Preferably, the surface of the knurling cylinder is provided with micro self-cleaning lines, specifically, the micro self-cleaning lines are arranged on the knurling pin 10, and the micro self-cleaning lines are nano lines, for example, nano lines similar to the surface structure of a lotus leaf, so as to reduce polyurethane residue. The material of the knurling cylinder is preferably a fluorine-containing polymer or a ceramic coating is performed on the surface. The material can be specifically selected from, for example, polytetrafluoroethylene, modified ultra-high molecular weight polyethylene, etc., which can reduce the adhesion of polyurethane.

[0047] Furthermore, the knurling structure 9 includes a knurling bracket and a plurality of independently pressurized knurling cylinders, the knurling bracket is equipped with a pressure device 8, the knurling cylinders are coaxially arranged, and each knurling cylinder is connected to the knurling bracket via a pressure device 8 with adjustable pressure, and the pressure device is a pressure-regulating oil cylinder or a pressure-regulating electric cylinder.

[0048] During use, the device of the present application moves along the road surface, and after the polyurethane concrete material is added to the paving box 2, it is paved in the front material section and the rear material section in sequence. Then, high-frequency compaction and low-frequency penetration are performed in sequence at the vibration compaction structure 7. Finally, knurling is performed at the knurling structure 9.

[0049] Embodiment three, as Figure 1-5 As shown, a paving device suitable for fast-curing polymer materials includes a frame, a spiral material distribution structure 3, a vibration compaction structure 7, and a knurling structure 9.

[0050] The frame includes a support base, and a sliding shoe 1 is provided at the bottom of the support base. The sliding shoe 1 can realize the pushing of the frame as a whole. The sliding shoe 1 can be replaced by other structures that can realize the supporting and fixing functions, such as a disc-shaped support foot; in a construction environment with high flatness, it can also be replaced by a structure with moving and fixing functions, such as a roller structure with a brake.

[0051] A paving box 2 is installed on the frame, and the paving box 2 is mainly used to accommodate the polyurethane concrete to be paved. The spiral material distribution structure 3, the vibration compaction structure 7, and the knurling structure 9 are all directly or indirectly fixed on the paving box 2. A telescopic device 4 is installed on the paving box 2, and the telescopic device 4 can adjust the height of the paving box 2 relative to the ground by telescoping, thereby controlling the thickness of the polyurethane concrete paving. The telescopic device 4 includes a rotating handle 5, and the user can adjust the height of the paving box 2 by twisting the rotating handle 5.

[0052] The spiral material distribution structure 3 includes a cylinder, which can rotate in the paving box 2, and its rotation process is controlled by the material distribution motor. A spiral material distribution sheet is installed on the outside of the cylinder, and a plurality of spiral material distribution sheets form a spiral groove for conveying materials. When the cylinder rotates, the spiral groove can convey the materials from the inlet and pave.

[0053] Furthermore, the cylinder is provided with two material dividing sections distributed on the left and right and with the same length. The spiral material dividing pieces on the two material dividing sections have the same pitch but opposite rotation directions. When the cylinder rotates, the two material dividing sections respectively transport the materials added from the two ends of the cylinder to the middle of the cylinder. Compared with the structure of non-segmented unidirectional transportation, this structure has faster transportation efficiency and is more suitable for the rapid curing characteristics of polyurethane concrete.

[0054] The space in the paving box 2 is divided into a front material distribution area and a rear material distribution area. Each of the two material distribution areas is provided with a cylinder. The cylinders in the two material distribution areas have the same height and are arranged parallel to each other. The pitch of the spiral material distribution piece in the front material distribution area is greater than the pitch of the spiral material distribution piece in the rear material distribution area. Furthermore, the pitch of the spiral material distribution piece in the front material distribution area is 1.5-2 times the pitch of the spiral material distribution piece in the rear material distribution area. The large pitch in the front can accelerate the material distribution process, and the small pitch in the rear can finely level the material. Paving by sections also accelerates the paving process, which is more suitable for the rapid curing characteristics of polyurethane concrete.

[0055] The cylinder is provided with a temperature sensor and a bidirectional temperature control structure, the bidirectional temperature control structure includes a heating unit and a refrigeration unit, the cylinder includes a temperature control layer, the heating unit and the refrigeration unit are arranged on the temperature control layer, and a heat conductive sleeve is arranged on the outside of the temperature control layer. The heat conductive sleeve can separate the material from the heating unit and the refrigeration unit, which not only plays a role in heat transfer, but also prevents the material from adhering to the heating unit and the refrigeration unit. Furthermore, the refrigeration unit is a semiconductor refrigeration sheet 11, and the heating unit is a heating wire 12. There are several semiconductor refrigeration sheets 11, which are distributed in an array on the temperature control layer, and there are gaps between adjacent semiconductor refrigeration sheets 11. The heating wire 12 is arranged in a U shape in the gaps between the semiconductor refrigeration sheets 11.

[0056] The vibrating compaction structure 7 is connected to the paving box 2 via an articulated bracket 6, and performs vibrating compaction on the concrete during the paving process. The articulated bracket is articulated to the paving box 2, ensuring that when the paving box 2 vibrates, the normal operation of the vibrating compaction structure is not disturbed, thereby ensuring the stability and consistency of the compaction effect.

[0057] The vibration compaction structure includes a dual-frequency vibration structure, and the dual-frequency vibration structure includes a high-frequency exciter and a low-frequency exciter. The high-frequency exciter and the low-frequency exciter are installed on the compaction vibration device at the same time, and work successively. High-frequency vibration can quickly improve the surface density, and low-frequency vibration can enhance the penetration effect. Preferably, the frequency of the high-frequency vibration is 80-100HZ, and the frequency of the low-frequency vibration is 30-50HZ. Furthermore, the vibration can use a sawtooth wave or a square wave instead of a sine wave to increase the instantaneous impact and break the bubbles inside the polyurethane concrete.

[0058] The knurling structure 9 includes a knurling cylinder, and the surface of the knurling cylinder is provided with an anti-skid structure. The anti-skid structure is a knurling pin 10, and the shape of the knurling pin 10 is a pyramid, that is, a four-sided pyramid structure, which can reduce the extrusion of the polyurethane concrete material to the surroundings during rolling. Preferably, the surface of the knurling cylinder is provided with micro self-cleaning lines, specifically, the micro self-cleaning lines are arranged on the knurling pin 10, and the micro self-cleaning lines are nano lines, for example, nano lines similar to the surface structure of a lotus leaf, so as to reduce polyurethane residue. The material of the knurling cylinder is preferably a fluorine-containing polymer or a ceramic coating is performed on the surface. The material can be specifically selected from, for example, polytetrafluoroethylene, modified ultra-high molecular weight polyethylene, etc., which can reduce the adhesion of polyurethane.

[0059] Furthermore, the knurling structure 9 includes a knurling bracket and a plurality of independently pressurized knurling cylinders, the knurling bracket is equipped with a pressure device 8, the knurling cylinders are coaxially arranged, and each knurling cylinder is connected to the knurling bracket via a pressure device 8 with adjustable pressure, and the pressure device is a pressure-regulating oil cylinder or a pressure-regulating electric cylinder.

[0060] During use, the device of the present application moves along the road surface, and after the polyurethane concrete material is added to the paving box 2, it is paved in the front material section and the rear material section in sequence. Then, high-frequency compaction and low-frequency penetration are performed in sequence at the vibration compaction structure 7. Finally, knurling is performed at the knurling structure 9.

[0061] Embodiment 4, as Figure 1-5 As shown, a paving device suitable for fast-curing polymer materials includes a frame, a spiral material distribution structure 3, a vibration compaction structure 7, and a knurling structure 9.

[0062] The frame includes a support base, and a sliding shoe 1 is provided at the bottom of the support base. The sliding shoe 1 can realize the pushing of the frame as a whole. The sliding shoe 1 can be replaced by other structures that can realize the supporting and fixing functions, such as a disc-shaped support foot; in a construction environment with high flatness, it can also be replaced by a structure with moving and fixing functions, such as a roller structure with a brake.

[0063] A paving box 2 is installed on the frame, and the paving box 2 is mainly used to accommodate the polyurethane concrete to be paved. The spiral material distribution structure 3, the vibration compaction structure 7, and the knurling structure 9 are all directly or indirectly fixed on the paving box 2. A telescopic device 4 is installed on the paving box 2, and the telescopic device 4 can adjust the height of the paving box 2 relative to the ground by telescoping, thereby controlling the thickness of the polyurethane concrete paving. The telescopic device 4 includes a rotating handle 5, and the user can adjust the height of the paving box 2 by twisting the rotating handle 5.

[0064] The spiral material distribution structure 3 includes a cylinder, which can rotate in the paving box 2, and its rotation process is controlled by the material distribution motor. A spiral material distribution sheet is installed on the outside of the cylinder, and a plurality of spiral material distribution sheets form a spiral groove for conveying materials. When the cylinder rotates, the spiral groove can convey the materials from the inlet and pave.

[0065] Furthermore, the cylinder is provided with two material dividing sections distributed on the left and right and with the same length. The spiral material dividing pieces on the two material dividing sections have the same pitch but opposite rotation directions. When the cylinder rotates, the two material dividing sections respectively transport the materials added from the two ends of the cylinder to the middle of the cylinder. Compared with the structure of non-segmented unidirectional transportation, this structure has faster transportation efficiency and is more suitable for the rapid curing characteristics of polyurethane concrete.

[0066] The space in the paving box 2 is divided into a front material distribution area and a rear material distribution area. Each of the two material distribution areas is provided with a cylinder. The cylinders in the two material distribution areas have the same height and are arranged parallel to each other. The pitch of the spiral material distribution piece in the front material distribution area is greater than the pitch of the spiral material distribution piece in the rear material distribution area. Furthermore, the pitch of the spiral material distribution piece in the front material distribution area is 1.5-2 times the pitch of the spiral material distribution piece in the rear material distribution area. The large pitch in the front can accelerate the material distribution process, and the small pitch in the rear can finely level the material. Paving by sections also accelerates the paving process, which is more suitable for the rapid curing characteristics of polyurethane concrete.

[0067] The cylinder is provided with a temperature sensor and a bidirectional temperature control structure, the bidirectional temperature control structure includes a heating unit and a refrigeration unit, the cylinder includes a temperature control layer, the heating unit and the refrigeration unit are arranged on the temperature control layer, and a heat conductive sleeve is arranged on the outside of the temperature control layer. The heat conductive sleeve can separate the material from the heating unit and the refrigeration unit, which not only plays a role in heat transfer, but also prevents the material from adhering to the heating unit and the refrigeration unit. Furthermore, the refrigeration unit is a semiconductor refrigeration sheet 11, and the heating unit is a heating wire 12. There are several semiconductor refrigeration sheets 11, which are distributed in an array on the temperature control layer, and there are gaps between adjacent semiconductor refrigeration sheets 11. The heating wire 12 is arranged in a U shape in the gaps between the semiconductor refrigeration sheets 11.

[0068] The vibrating compaction structure 7 is connected to the paving box 2 via an articulated bracket 6, and performs vibrating compaction on the concrete during the paving process. The articulated bracket is articulated to the paving box 2, ensuring that when the paving box 2 vibrates, the normal operation of the vibrating compaction structure is not disturbed, thereby ensuring the stability and consistency of the compaction effect.

[0069] The knurling structure 9 includes a knurling cylinder, and the surface of the knurling cylinder is provided with an anti-skid structure. The anti-skid structure is a knurling pin 10, and the shape of the knurling pin 10 is a pyramid, that is, a four-sided pyramid structure, which can reduce the extrusion of the polyurethane concrete material to the surroundings during rolling. Preferably, the surface of the knurling cylinder is provided with micro self-cleaning lines, specifically, the micro self-cleaning lines are arranged on the knurling pin 10, and the micro self-cleaning lines are nano lines, for example, nano lines similar to the surface structure of a lotus leaf, so as to reduce polyurethane residue. The material of the knurling cylinder is preferably a fluorine-containing polymer or a ceramic coating is performed on the surface. The material can be specifically selected from, for example, polytetrafluoroethylene, modified ultra-high molecular weight polyethylene, etc., which can reduce the adhesion of polyurethane.

[0070] Furthermore, the knurling structure 9 includes a knurling bracket and a plurality of independently pressurized knurling cylinders, the knurling bracket is equipped with a pressure device 8, the knurling cylinders are coaxially arranged, and each knurling cylinder is connected to the knurling bracket via a pressure device 8 with adjustable pressure, and the pressure device is a pressure-regulating oil cylinder or a pressure-regulating electric cylinder.

[0071] Furthermore, a gradient temperature control module is also provided inside the knurling cylinder, and a temperature gradient of 5-8°C is formed on the entire surface of several knurling cylinders from the center to the edge, and the temperature difference is used to control the fluidity of the material and optimize the texture forming. The knurling cylinder with uniform temperature transmission is prone to material accumulation at the edge due to the rapid heat dissipation on both sides of the paving surface, which makes it more likely to cause adhesion when the knurling cylinder is withdrawn. By cooling the edge, the heat dissipation difference can be actively compensated, so that the uniformity of texture depth can be improved. In actual tests, cooling the edge significantly reduces the incidence of burrs at the edge of the texture.

[0072] During use, the device of the present application moves along the road surface, and after the polyurethane concrete material is added to the paving box 2, it is paved in the front material section and the rear material section in sequence. Then, high-frequency compaction and low-frequency penetration are performed in sequence at the vibration compaction structure 7. Finally, knurling is performed at the knurling structure 9.

Claims

1. A paving device suitable for fast curing polymer materials, comprising a frame, a spiral material distribution structure, a vibration compaction structure, and a knurling structure, characterized in that: The spiral material distribution structure includes a cylinder, a spiral material distribution plate is installed on the outside of the cylinder, the spiral material distribution plate forms a spiral groove for transporting materials, a temperature sensor and a two-way temperature control structure are arranged in the cylinder, the two-way temperature control structure includes a heating unit and a refrigeration unit, and the knurling structure includes a knurling bracket and a knurling cylinder.

2. A paving device suitable for fast curing polymer materials according to claim 1, characterized in that: The cylinder includes a temperature control layer, the heating unit and the refrigeration unit are arranged on the temperature control layer, a heat conductive sleeve is provided on the outside of the temperature control layer, the refrigeration unit is a semiconductor refrigeration plate, the heating unit is a heating wire, and the heating wire is arranged in a U shape in the gap between the semiconductor refrigeration plates.

3. The paving equipment suitable for fast curing polymer materials according to claim 1, characterized in that: The spiral material distribution structure includes at least two independent temperature control sections in the direction of transporting materials. The temperature control section includes a front section and a rear section. The material enters the spiral material distribution structure from the front section, and the temperature of the rear section is greater than that of the front section.

4. The paving equipment suitable for fast curing polymer materials according to claim 3 is characterized in that: The temperature control section also includes a middle section, and the temperature of the middle section is between the front section and the rear section.

5. The paving equipment suitable for fast-curing polymer materials according to claim 4, characterized in that: The temperature of the front section is between 15-20°C, the temperature of the middle section is between 25±2°C, and the temperature of the rear section is between 30-35°C.

6. The paving equipment suitable for fast-curing polymer materials according to claim 1, characterized in that: A paving box is installed on the frame, and the vibration compaction structure is hingedly connected to the paving box via an articulated bracket.

7. The paving equipment suitable for fast curing polymer materials according to claim 1, characterized in that: A pressure device is installed on the knurling bracket, and the pressure device is a pressure-regulating oil cylinder or a pressure-regulating electric cylinder. The surface of the knurling cylinder is provided with micro self-cleaning patterns.

8. The paving equipment suitable for fast-curing polymer materials according to claim 1, characterized in that: A gradient temperature control module is also provided inside the knurling cylinder, and a temperature gradient of 5-8° C. decreasing from the center to the edge is formed on the surface of the knurling cylinder.

9. A paving device suitable for fast curing polymer materials according to any one of claims 1 to 8, characterized in that: The spiral material distribution structure includes a front material distribution area and a rear material distribution area. The pitch of the spiral material distribution pieces in the front material distribution area is greater than the pitch of the spiral material distribution pieces in the rear material distribution area. The pitch of the spiral material distribution pieces in the front material distribution area is 1.5-2 times the pitch of the spiral material distribution pieces in the rear material distribution area.

10. A paving device suitable for fast curing polymer materials according to any one of claims 1 to 8, characterized in that: The vibration compaction structure includes a dual-frequency vibration structure, and the dual-frequency vibration structure includes a high-frequency exciter and a low-frequency exciter.

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