A slipform paver

Abstract

The present application relates to the field of pavement construction, more particularly to a slipform paver. When the slipform paver is used for rapid construction of airport concrete pavement, the method comprises: laying a construction form for the concrete pavement to form a paving area; paving concrete material into the paving area; and vibrating, rubbing, pumping and smoothing the concrete material in the paving area by the slipform paver. The present application adopts an integrated construction method of paving, extrusion forming, rubbing and smoothing, and solves the problem of uneven quality in traditional construction. The slipform paver is controlled by a computer, and compared with traditional vibration, the slipform paver walks at a relatively uniform speed, high-power vibration makes the concrete aggregate uniform and dense, the texture depth and flatness are better, manual labor and cost are reduced, and the hidden dangers of production, safety and quality are reduced.

Description

Technical Field

[0001] This invention relates to the field of road construction, and in particular to a slipform paver. Background Technology

[0002] With urban development, the amount of solid construction waste is increasing, making the effective recycling of this waste an urgent problem to be solved. Using construction waste for concrete pavement construction is an environmentally friendly and sustainable practice that can reduce the consumption of natural resources, lower construction costs, and improve pavement quality and performance. By mixing construction waste, not only can the service life of the pavement be extended, but the costs of waste treatment and disposal can also be reduced, achieving waste resource utilization, enhancing corporate image, and gaining public recognition and support. Therefore, effectively utilizing construction waste for road construction is a beneficial practice that can bring positive impacts to urban construction and environmental protection. However, traditional road construction methods require workers to use handheld vibrators to compact the concrete after pouring, followed by manual leveling. This not only results in a long construction cycle and high labor costs, but also easily leads to problems such as cracks and grout leakage during construction, affecting pavement quality and service life. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a slipform paver that can be used to recycle construction waste and waste asphalt for concrete pavement construction, with good construction quality, high construction efficiency, energy saving and environmental protection.

[0004] The slipform paver described in this invention can be used for rapid construction of airport concrete pavements.

[0005] When using this slipform paver for rapid construction of airport concrete pavement, the following are included: The construction formwork for laying concrete pavement forms the paving area; Lay concrete material into the paving area; The concrete material in the paving area is vibrated, smoothed, and leveled using a slipform paver.

[0006] Furthermore, the concrete material can be a mixture of recycled building materials and mortar and concrete, effectively utilizing solid construction waste and saving energy and protecting the environment.

[0007] Furthermore, the construction formwork for laying the concrete pavement forms the paving area, including: A total station was used to locate the installation position of the construction formwork, and an ink line was used to pre-establish the installation position of the construction formwork. The construction formwork was fixed in its position using triangular supports, and the straightness, verticality, planar position, and top elevation of the formwork were re-measured to ensure that the top elevation of multiple construction formworks met the preset requirements.

[0008] Furthermore, the construction formwork for laying the concrete pavement, forming the paving area, also includes: Asphalt is applied to the contact surface between the construction formwork and the concrete material using a coating device. When laying geotextile in the paving area, the geotextile should be overlapped with 10cm longitudinal seams, and the ends of the geotextile should extend to the outside of the template.

[0009] Furthermore, the asphalt is liquid asphalt obtained by recycling waste asphalt through a clean asphalt recycling device and then heating it.

[0010] Furthermore, the construction formwork for laying the concrete pavement, forming the paving area, also includes: The gaps between the construction formwork and the water-stabilized base layer are sealed with mortar, and asphalt felt is pasted on the bottom inside the construction formwork to connect the construction formwork with the geotextile.

[0011] Furthermore, when the concrete material in the paving area is vibrated using a slipform paver, The slipform paver has a vibrator diameter of 76mm, a vibration frequency of 10,000-12,000 times / min, an amplitude of 3mm, an influence radius of 50cm, a spacing of 35cm between adjacent vibrators, a spacing of 15cm between the outermost vibrator and the construction template, and a travel speed of 1m / min.

[0012] Furthermore, when the concrete material in the paving area is leveled and slurry-lifted by the slipform paver, the concrete is squeezed and compacted by the extrusion plate on the slipform paver to form a flat slab. The surface of the concrete is then repeatedly leveled and squeezed by the leveling beam over the entire width to form a thin slurry layer of uniform thickness and consistent wetness on the concrete surface.

[0013] Furthermore, when smoothing the concrete material in the paving area using a slipform paver, the smoothing tool on the slipform paver is used to move the concrete surface laterally in a Z-shape and perform small-amplitude longitudinal smoothing.

[0014] Furthermore, the method also includes: The smoothed concrete surface is kneaded once with a roller, scraped once with a screed, leveled twice with a wooden trowel, and twice with a steel trowel. The concrete material on top of the formwork is then cleaned.

[0015] Furthermore, the method also includes: The concrete surface is roughened, and a joint cutter is used to cut the joints when the concrete structure strength reaches 6-10 MPa.

[0016] As can be seen from the above scheme, compared with the traditional construction method, the present invention adopts an integrated construction method of paving, extrusion molding, leveling and finishing, which solves the problem of inconsistent quality in traditional construction. The slipform paver construction is computer controlled, and compared with the traditional vibration, the walking speed is relatively uniform. The high-power vibration makes the concrete aggregate uniform and dense, and the texture depth and flatness have a better visual effect. It reduces labor input and cost, and reduces production, safety and quality risks. The concrete material used in the present invention can be a mixture of recycled building materials and mortar and concrete, effectively utilizing solid construction waste, and saving energy and protecting the environment.

[0017] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 A process flow diagram of a rapid construction method for airport concrete pavement based on a slipform paver provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the first direction of the leveling beam provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the second direction of the leveling beam provided in an embodiment of the present invention; Figure 4 A schematic diagram of the suspension bracket provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the first direction of the assembly beam provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the assembly beam in a second direction provided in an embodiment of the present invention; Figure 7 A schematic diagram of the assembly base provided in an embodiment of the present invention; Figure 8 A cross-sectional view of the assembly base provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the flattening drive unit provided in an embodiment of the present invention; Figure 10 This is a schematic diagram of the first direction of the smoothing component provided in an embodiment of the present invention; Figure 11 This is a schematic diagram of the second direction of the smoothing component provided in an embodiment of the present invention; Figure 12 A cross-sectional view of the smoothing component provided in an embodiment of the present invention; Figure 13 This is a schematic diagram of the first direction of the flat plate provided in an embodiment of the present invention; Figure 14 This is a schematic diagram of the second direction of the flat plate provided in an embodiment of the present invention. Detailed Implementation

[0019] To ensure a clear and complete description of the technical solutions in the embodiments of the present invention, which will be presented below with reference to the accompanying drawings, it is important to understand that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0021] Example 1 Please see Figure 1 This invention provides a slipform paver, which, when used for rapid construction of airport concrete pavement, includes: The construction formwork for laying concrete pavement forms the paving area; Lay concrete material into the paving area; The concrete material in the paving area is vibrated, smoothed, and leveled using a slipform paver.

[0022] When using the slipform paver of this invention for rapid construction of airport concrete pavement, fully utilizing the slipform paver helps reduce labor input, improves the quality of the concrete pavement, significantly accelerates construction speed, and lowers construction costs. Its main technological features are reflected in the following five aspects: In the construction method of this invention, the slipform paver can be used to spread, compress, level, and finish the concrete material in the paving area, adopting an integrated construction method that solves the problem of inconsistent quality in traditional construction; The slipform paver construction is computer-controlled, and compared with traditional vibration, the travel speed is relatively uniform. High-power vibration makes the concrete aggregate uniform and dense, and the texture depth and flatness have a better visual effect, which can effectively reduce labor input and costs, and reduce potential risks to production, safety, and quality.

[0023] The construction formwork for laying the concrete pavement forms the paving area, including: A total station was used to locate the installation position of the construction formwork, and an ink line was used to pre-establish the installation position of the construction formwork. The construction formwork was fixed in its position using triangular supports, and the straightness, verticality, planar position, and top elevation of the formwork were re-measured to ensure that the top elevation of multiple construction formworks met the preset requirements.

[0024] The construction formwork for laying concrete pavement, which forms the paving area, also includes: Asphalt is applied to the contact surface between the construction formwork and the concrete material using a coating device. When laying geotextile in the paving area, the geotextile should be overlapped with 10cm longitudinal seams, and the ends of the geotextile should extend to the outside of the template.

[0025] The construction formwork for laying concrete pavement, which forms the paving area, also includes: The gaps between the construction formwork and the water-stabilized base layer are sealed with mortar, and asphalt felt is pasted on the bottom inside the construction formwork to connect the construction formwork with the geotextile.

[0026] Because there are gaps between the water-stabilized base course and the construction formwork, the bottom mortar will leak out of the construction formwork during the concrete vibration process. Therefore, the bottom of the construction formwork needs to be sealed with mortar in advance, and tar paper should be attached to the bottom of the inner side of the construction formwork to ensure that the construction formwork is connected to the geotextile.

[0027] The preparation and commissioning of the slipform paver used in this invention are as follows: (1) After the slipform paver enters the bay, it should be debugged. First, adjust the distance between the four tracks of the slipform paver and the left and right side molds of the construction template so that the four tracks on the left and right sides are parallel to the side molds of the construction template.

[0028] (2) Adjust the resistance values ​​of the four tracks to ensure that the distance between the slipform paver and the guide rails on both sides is consistent when the slipform paver is walking, and that the elevation of the guide rails is consistent with the elevation of the construction template. Use a level to control the slipform paver. According to the elevation of the guide rails on both sides, use four sensors to adjust the slipform paver's extrusion plate to be consistent with the elevation of the top surface of the template. Walk back and forth 1-2 times to confirm that there are no errors before proceeding with the construction operation.

[0029] When using a slipform paver to vibrate and compact the concrete material in the paving area. The slipform paver uses a 76mm diameter vibrator, a vibration frequency of 10,000-12,000 vibrations / min, an amplitude of 3mm, an influence radius of 50cm, a spacing of 35cm between adjacent vibrators, and a 15cm spacing between the outermost vibrator and the formwork. The slipform paver travels at a speed of 1m / min. During construction, the vibration frequency or speed can be adjusted according to the consistency of the concrete to prevent over-vibration or under-vibration. When the mixture is dry, the vibration frequency should be increased and the paving speed decreased to prevent under-vibration from causing looseness, surface roughness, and affecting smoothness. When the mixture is thin, the vibration frequency should be decreased and the paving speed increased.

[0030] The initial and final sections of the slipform paver are manually vibrated with a handheld vibrator to remove air and raise the slurry. Behind the vibratory chamber of the slipform paver is a single extrusion plate, approximately 1.5m wide, with a forward tilt angle of about 3°. After the concrete is vibrated, as the slipform paver moves forward, the concrete is compressed and compacted by the extrusion plate, forming a flat slab. At this point, a uniform, mortar-rich surface is formed on the concrete surface, with some small pits. Then, a heavy-duty leveling beam repeatedly rubs the concrete surface across the entire width, creating a slurry ring at the front end of the leveling beam. After being leveled and squeezed by the leveling beam, the surface exhibits a thin slurry layer of uniform thickness and consistent wetness. The super smoother on the slipform paver is the final treatment for the concrete surface. Two hydraulic pumps move laterally in a "Z" shape and smooth the surface longitudinally with small amplitude. After mechanical smoothing, the edges of the slab are manually reinforced to ensure that the flatness of the edges is consistent with the center of the slab. The movement trajectory of the smoothing beam creates transverse stripes on the concrete surface. By using the smoother to knead the mortar left and right, the transverse stripes can be eliminated, improving the uniformity of the surface mortar, increasing surface strength, and reducing surface micro-cracks.

[0031] When the concrete material in the paving area is leveled and slurry-lifted by the slipform paver, the extrusion plate on the slipform paver is used to compress and compact the concrete, so that the concrete forms a flat slab. The leveling beam is used to repeatedly level and squeeze the concrete surface across the entire width, so that a thin slurry layer with uniform thickness and consistent dryness and wetness is formed on the concrete surface.

[0032] When smoothing concrete material in the paving area using a slipform paver, the smoothing tool on the slipform paver moves the concrete surface laterally in a Z-shape and performs small-amplitude longitudinal smoothing.

[0033] When using the slipform paver of this invention for rapid construction of airport concrete pavement, it also includes: The smoothed concrete surface is kneaded once with a roller, scraped once with a screed, leveled twice with a wooden trowel, and twice with a steel trowel. The concrete material on top of the formwork is then cleaned.

[0034] When using the slipform paver of this invention for rapid construction of airport concrete pavement, it also includes: The concrete surface is roughened, and a joint cutter is used to cut the joints when the concrete structure strength reaches 6-10 MPa.

[0035] The working principle of the slipform paver in this invention is as follows: The slipform paver moves along the direction and elevation set by the construction baseline. The concrete mix enters the auger of the slipform paver, which evenly distributes the concrete mix across the front of the loose control plate. The forming template and amplitude template on the slipform paver slide forward, and then the vibrating bar group in the vibrating chamber vibrates and compacts the concrete, releasing air bubbles. The tamping rods of the slipform paver compact the coarse aggregate to ensure the thickness of the slurry. Then, the extrusion force generated by the forward tilt angle of the extrusion plate of the slipform paver is used to compress the concrete even more densely, while simultaneously extruding and smoothing out the concrete pavement. The standard cross-section, smooth appearance, and good longitudinal and transverse flatness are achieved. The subsequent automatic trowel eliminates small air bubbles and minor defects caused by dragging stones on the surface, and also partially improves the slurry, ensuring good flatness of the concrete surface. In this invention, a computer-controlled paver is used, with the travel speed advancing uniformly according to a preset value, compensating for the unevenness of manual vibration. Simultaneously, the travel speed is adjustable; depending on the site conditions, when the temperature is high and the mixture is relatively dry and thick, the travel speed is appropriately reduced and the vibration frequency increased; conversely, when the temperature is low and the mixture is thin, the travel speed can be increased and the vibration frequency reduced. The technological advancement of the slipform paver lies in: the rear of the vibratory chamber is equipped with a single extrusion plate with a forward tilt angle of 3°. The concrete is compressed and compacted through the extrusion plate, forming a flat slab; the heavy-duty trowel beam of the slipform paver repeatedly rubs the surface, resulting in a more uniform surface; the super smoother of the slipform paver moves laterally in a "Z" pattern and performs small-area longitudinal smoothing, eliminating transverse stripes, resulting in higher surface strength and reduced surface micro-cracks.

[0036] The following is an application example of a rapid construction method for airport concrete pavement based on a slipform paver according to the present invention: Example 1: Construction of Chengdu Tianfu International Airport using the construction method of this invention: The concrete volume of the Chengdu Tianfu International Airport Flight Area Airfield 09 section was 267,852㎡ / 107,571m³. The pavement project started on May 12, 2019. In August 2019, a test section of the pavement concrete was constructed using a slipform paver. The data results showed that the construction quality was good. The Chengdu Tianfu International Airport Flight Area Airfield 09 section is the first unit in the airport to use the rapid construction method of airport concrete pavement based on a slipform paver, which is based on this invention. Before the project started, a briefing was conducted, and the construction team was reasonably organized. A large number of working areas were seized before the rainy season, which shortened the pavement construction period by 83 days. The project was completed and accepted in May 2021.

[0037] Example 2: Construction of Beijing Daxing International Airport using the construction method of this invention: Beijing Daxing International Airport is a super-large international aviation hub located in Yufa Town and Lixian Town in the southern part of Daxing District, Beijing, and Guangyang District, Langfang City, Hebei Province. It is 46km from the center of Beijing and 67km from Beijing Capital International Airport. The eighth section of the Beijing Daxing International Airport runway project (FXQ-CD-008 section) is located in the airport's central area, connecting to the current terminal building to the north, with a reserved S1 satellite terminal in the middle, and a planned terminal building at the south end. The total area of ​​this section is 555,000 square meters. It includes taxiways, connecting taxiways, and service roads, with a concrete pavement area of ​​274,000 square meters and a shoulder area of ​​82,000 square meters. The pavement was constructed using a rapid construction method for airport concrete pavement based on a slipform paver, shortening the construction period by 89 days.

[0038] Example 3: Construction of the second phase apron project of Chengdu Aircraft Maintenance Base using the construction method of the present invention: The Chengdu Shuangliu Aircraft Maintenance Base Phase II hangar project is located at Chengdu Shuangliu International Airport, adjacent to Sichuan Airlines' cargo apron. The apron construction project for Phase II of the aircraft maintenance base is located at the north end of Chengdu Shuangliu International Airport. It is a new outdoor apron project of Sichuan Aircraft Maintenance Engineering Co., Ltd., situated in front of the proposed No. 11 hangar. The apron is rectangular, 200.6 meters long and 53.4 meters wide, with an area of ​​10,712 square meters.

[0039] This project adopted a rapid construction method for airport concrete pavement based on a slipform paver, as described in this invention, and successfully passed final acceptance in January 2016. It solved many technical problems encountered during construction, shortened the construction period, saved energy, reduced costs by a total of 300,000 yuan, shortened the construction period by 20 days, ensured project quality and safety, and won praise from all sectors of society, demonstrating significant economic and social benefits.

[0040] Example 2 Please see Figure 1-14 Based on Embodiment 1, the present invention provides a technical solution for a smoothing beam for repeatedly smoothing and kneading a concrete surface across its entire width; the smoothing beam includes a hanger 100, an assembly beam 200 is slidably mounted on the hanger 100, and multiple smoothing components 300 arranged side by side are detachably connected to the assembly beam 200. The assembly beam 200 is connected to a smoothing drive unit 400 mounted on the hanger 100, so that the multiple smoothing components 300 are driven by the smoothing drive unit 400 to perform reciprocating sliding smoothing and kneading motions in the width direction of the concrete surface.

[0041] The working principle and technical effects of the above technical solution are as follows: The leveling beam provided by this invention is used to repeatedly level and squeeze the concrete surface across its entire width. During operation, the leveling drive unit 400 is connected to a power component, which can be a motor or the power output shaft of a slipform paver. Under the control of the power component, the leveling drive unit 400 drives multiple leveling components 300 to perform reciprocating sliding leveling and squeezing movements on the width direction of the concrete surface, thereby leveling the concrete surface. In the leveling beam of this invention, multiple detachable leveling components 300 are provided, which facilitates the adjustment of the actual number of leveling components 300 installed according to the road width, making it easy to meet the needs of different construction scenarios. Furthermore, it is convenient to assemble and disassemble and is easy to operate.

[0042] The assembly beam 200 includes two assembly seats 201 connected to the leveling drive unit 400. The two assembly seats 201 are fixed relative to each other on two sliding sleeves 202. The two sliding sleeves 202 are fixed relative to each other at both ends of two inverted T-shaped slide rails 203. The two sliding sleeves 202 slide on the lifting beam at the bottom of the lifting frame 100. The upper surface of the two assembly seats 201 slides in cooperation with the lower surface of the crossbeam at the top of the lifting frame 100. Multiple leveling components 300 are all connected to the two inverted T-shaped slide rails 203.

[0043] After the leveling drive unit 400 is started, it can drive the two sliding sleeves 202 to reciprocate on the lifting beam at the bottom of the lifting frame 100 through the two mounting seats 201. When the two sliding sleeves 202 slide, they drive the two inverted T-shaped slide rails 203 and the multiple leveling components 300 installed on the two inverted T-shaped slide rails 203 to reciprocate leveling and squeezing motions in the entire width direction of the concrete surface. Thus, the concrete surface is repeatedly leveled and squeezed by the multiple leveling components 300, so that a thin slurry layer with uniform thickness and consistent dryness and wetness is formed on the concrete surface. The multiple leveling components 300 are all connected to the two inverted T-shaped slide rails 203, which facilitates the installation or removal of the leveling components 300.

[0044] The smoothing drive unit 400 includes an input shaft 401 rotatably mounted on the hanger 100. One end of the input shaft 401 can be connected to a power component, which can be a motor or the power output shaft of a slipform paver. The other end of the input shaft 401 is fixedly connected to a square transmission rod 402, which slides within a square sliding hole in a transmission tube 403. A speed regulating screw 404 is threaded onto the transmission tube 403. Multiple speed regulating holes 405 are evenly arranged on the square transmission rod 402, and the speed regulating screw 404 is inserted into one of the speed regulating holes 405. A short shaft is fixed at the end of the square transmission rod 402. The friction disc 406, fixed to the transmission pipe 403, is vertically frictionally connected to the friction disc 407. The friction disc 407 is fixedly connected to the transmission worm gear 408, which is rotatably mounted on the suspension frame 100. The two ends of the transmission worm gear 408 are meshed with two transmission worm wheels 409 to drive the two transmission worm wheels 409 to rotate in the same clockwise direction. An eccentric shaft 410 is fixedly connected to the eccentric part of the wheel surface of each of the two transmission worm wheels 409. The two eccentric shafts 410 are rotatably connected to one end of two eccentric rods 411, and the other end of the two eccentric rods 411 are rotatably connected to two mounting seats 201.

[0045] One end of the input shaft 401 can be connected to a power component. The input shaft 401 rotates under the drive of the power component. When the input shaft 401 rotates, it drives the square transmission rod 402 to rotate. The square transmission rod 402, through its engagement with the square sliding hole, drives the transmission tube 403 to rotate around its own axis. When the transmission tube 403 rotates, it drives the first friction disc 406 to rotate. When the first friction disc 406 rotates, it drives the second perpendicular friction disc 407 to rotate. The rotation of the second friction disc 407 drives the transmission worm gear 408 to rotate. The rotation of the transmission worm gear 408 meshes with two transmission worm wheels 409, causing the two transmission worm wheels 409 to rotate in the same clockwise direction. During synchronous rotation, two eccentric shafts 410 drive one end of two eccentric rods 411 to rotate synchronously in a circular motion. The two eccentric rods 411, through two mounting seats 201, drive two sliding sleeves 202 to reciprocate on the lifting beam at the bottom of the lifting frame 100. This structure provides good stability for the reciprocating sliding motion of the multiple leveling components 300. Furthermore, when the power component stops outputting power to the input shaft 401, the structure of the transmission worm gear 408 and two transmission worm wheels 409 keeps the positions of the multiple leveling components 300 relatively locked, preventing easy shaking. This facilitates the use of the invention as a leveling device and enhances its functionality. To meet the needs of different applications; and the contact position between friction disc 1 406 and friction disc 2 407 is adjustable. Controlling the movement of friction disc 1 406 toward the center of friction disc 2 407 can improve transmission efficiency, making the reciprocating sliding motion of multiple leveling components 300 faster. Controlling the movement of friction disc 1 406 away from the center of friction disc 2 407 can reduce the reciprocating sliding motion of multiple leveling components 300, so as to be suitable for different construction conditions; when adjusting the contact position between friction disc 1 406 and friction disc 2 407, the speed regulating screw 404 is disengaged from the speed regulating socket 405, and then the transmission tube 403 slides on the square transmission rod 402. After sliding to the desired position, the speed control screw 404 can be inserted into the corresponding speed control socket 405. The operation is very convenient and the stability is strong. In addition, the reason why the friction transmission connection of friction disc 1 406 and friction disc 2 407 is adopted in this invention is that when multiple leveling components 300 are in contact with the raised concrete pavement and are unable to move easily, friction disc 1 406 and friction disc 2 407 can slip slightly, so that multiple leveling components 300 have a certain buffer time to level and smooth the raised concrete pavement, ensuring the leveling effect and reducing the damage to the concrete pavement caused by hard extrusion, thus ensuring the construction effect.

[0046] The first embodiment of the assembly base 201 is that the assembly base 201 includes a rectangular base body, which is fixed on the sliding sleeve 202. The rectangular base body is hinged to the eccentric rod 411. In this case, the rectangular base body drives the sliding sleeve 202 to slide under the control of the eccentric rod 411, which has good stability.

[0047] The second embodiment of the assembly base 201 is that the assembly base 201 includes a fixed base body 201A, and a sliding groove is provided on the inner side of the fixed base body 201A. One end of the movable base body 201B is slidably connected in the sliding groove. An elastic buffer element 201C is fixed between the movable base body 201B and the inner side of the sliding groove. A limiting block 201D fixed on the movable base body 201B slides in a limiting groove on the upper surface of the fixed base body 201A. The fixed base body 201A is fixed to the sliding sleeve 202, and the movable base body 201B is hinged to the eccentric rod 411. At this time, the eccentric rod 411 drives the movable seat 201B to move. When the movable seat 201B moves, it drives the fixed seat 201A to move through cooperation with the elastic buffer element 201C. The fixed seat 201A drives the sliding sleeve 202 to slide. The purpose of setting the elastic buffer element 201C is to work with the friction disc 1 406 and the friction disc 2 407 to deal with the situation where the smoothing component 300 is blocked from contacting the raised concrete pavement and cannot move easily. When the smoothing component 300 contacts the raised concrete pavement, the elastic buffer element 201C provides buffering. The elastic buffer element 201C can be a spring or elastic rubber, which can play a buffering role.

[0048] The smoothing component 300 includes a smoothing seat 301 with an installation cavity. The smoothing seat 301 is slidably fitted onto two inverted T-shaped slide rails 203 via two inverted T-shaped grooves. A locking screw threaded onto the smoothing seat 301 is inserted into a locking through hole on the inverted T-shaped slide rail 203. A reinforcing bracket 302 is fixedly connected between the front and rear side plates of the smoothing seat 301. The center of the reinforcing bracket 302 is rotatably connected to the middle of a rotating shaft 303. A central turntable 304 fixed at the lower end of the rotating shaft 303 is located in the central hole of the base plate of the smoothing seat 301. The lower surface of the central turntable 304 is coplanar with the lower surface of the base plate. The lower part of a smoothing ring 305 is rotatably connected within the annular groove formed between the central turntable 304 and the central hole. The upper part slides on the rotating shaft 303 through the sliding shaft hole, and the protrusion on the upper part of the smoothing ring 305 slides in the axial groove of the rotating shaft 303; the rotating shaft 303 is slidably connected to the spring retaining ring 306, and the spring retaining ring 306 is rotatably connected to one end of the height adjustment screw 307. The middle part of the height adjustment screw 307 is threadedly connected to the reinforcing bracket 302, and the locking rod threadedly connected to the reinforcing bracket 302 presses against the height adjustment screw 307; the tension spring 308 fixed at the bottom of the spring retaining ring 306 is sleeved on the rotating shaft 303, and the bottom of the tension spring 308 abuts against the upper surface of the smoothing ring 305; the upper end of the rotating shaft 303 is fixed with the driven gear 309, and the driven gear 309 meshes with the transverse rack 101 fixed at the bottom of the lifting frame 100.The smoothing seat 301 inside the smoothing component 300 contacts the concrete pavement. The smoothing seat 301 slides on two inverted T-shaped slide rails 203 via two inverted T-shaped grooves. The locking screw threaded on the smoothing seat 301 is inserted into the locking hole on the inverted T-shaped slide rail 203, thus performing a reciprocating sliding motion in the left and right direction under the drive of the inverted T-shaped slide rail 203, thereby smoothing the concrete pavement. When the smoothing seat 301 performs the reciprocating sliding motion in the left and right direction, the driven gear 309 contacts different positions with the transverse rack 101 fixed at the bottom of the hanger 100, thereby allowing the driven gear 309 to rotate. When the 09 rotates, it drives the rotating shaft 303 to rotate, which in turn drives the central turntable 304 to rotate. The rotation of the rotating shaft 303 also drives the smoothing ring 305 to rotate through the cooperation of the axial groove and protrusion. Thus, the rotating smoothing ring 305 and the central turntable 304 grind and smooth the concrete pavement. This grinding and smoothing by the smoothing ring 305 and the central turntable 304 effectively removes protrusions from the concrete pavement surface, making the surface smoother and improving its gloss. When the smoothing ring 305 is not in use, its lower end extends under the elastic force of the tension spring 308 to the smoothing seat 301. During construction, when the smoothing seat 301 is pressed against the concrete pavement, the smoothing ring 305 contacts the concrete pavement and is pressed into the smoothing seat 301. At this time, the lower surface of the smoothing ring 305 is coplanar with the lower surface of the smoothing seat 301, which facilitates the simultaneous rotational grinding of the smoothing ring 305 while the smoothing seat 301 is sliding and grinding. Furthermore, due to the tension spring 308, the smoothing ring 305 has a certain degree of buffer when contacting protrusions, effectively smoothing them. Moreover, after long-term use, as the bottom of the smoothing ring 305 gradually wears thinner, the tension spring 308 keeps the smoothing ring 305 moving downwards to maintain contact with the concrete. Effective contact with the road surface; in addition, a spring retaining ring 306 is slidably connected on the rotating shaft 303. The spring retaining ring 306 is rotatably connected to one end of the height adjustment screw 307. The middle part of the height adjustment screw 307 is threadedly connected to the reinforcing bracket 302. By rotating the height adjustment screw 307, its contact position with the reinforcing bracket 302 can be changed, thereby controlling the sliding of the spring retaining ring 306 on the rotating shaft 303, adjusting the initial compression amplitude of the tension spring 308, thereby adjusting the pressure applied to the concrete road surface by the leveling ring 305, changing the grinding effect. The locking rod threaded on the reinforcing bracket 302 presses against the height adjustment screw 307, effectively ensuring the stability of the height adjustment screw 307 after adjustment.

[0049] A flattening plate 500 is fixedly connected to the front side plate of the smoothing seat 301. The flattening plate 500 is inclined upwards, and its lower surface is coplanar with the lower surface of the bottom plate of the smoothing seat 301, facilitating proper flattening and extrusion treatment of the concrete pavement to be smoothed in advance. A compaction plate 502 is slidably connected within the longitudinal groove 501 of the flattening plate 500, and its lower surface is coplanar with the lower surface of the flattening plate 500. The middle of the two vertical shafts 503 fixed to the compaction plate 502 slides on two stops at the upper part of the longitudinal groove 501. A reset spring 504 fixed between the compaction plates 502 is sleeved on two vertical shafts 503; a vertical friction plate 505 fixed to the upper surface of the compaction plate 502 is intermittently rubbed with an incomplete friction wheel 310 fixed to the front end of the horizontal rotating shaft 313. When the incomplete friction wheel 310 rotates to rub against the vertical friction plate 505, it can drive the vertical friction plate 505 to move up or down. The horizontal rotating shaft 313 rotates on the front side plate of the smoothing seat 301. A bevel gear 311 fixed at the rear end of the horizontal rotating shaft 313 meshes perpendicularly with a bevel gear 312 fixed on the rotating shaft 303. When the rotating shaft 303 rotates, it drives the second bevel gear 312 to rotate. The second bevel gear 312, in turn, meshes with the first bevel gear 311. The first bevel gear 311, in turn, drives the horizontal rotating shaft 313 and the incomplete friction wheel 310 on it to rotate. Since the driven gear 309 meshes with the transverse rack 101, and the driven gear 309 performs reciprocating motion in the left-right direction, it continuously switches between clockwise and counterclockwise rotation. This causes the incomplete friction wheel 310 to also continuously switch between clockwise and counterclockwise rotation. Figure 2 , Figure 11 and Figure 12As shown, when the incomplete friction wheel 310 rotates clockwise, when it rotates to contact the vertical friction plate 505, it can generate a downward thrust on the vertical friction plate 505. This, in turn, drives the compaction plate 502 to generate downward pressure, thus compressing the concrete pavement. When the concrete pavement is compacted sufficiently, causing the compaction plate 502 to be unable to move downwards or unable to move downwards a large distance, the incomplete friction wheel 310 slips against the vertical friction plate 505. This ensures sufficient compression while preventing the incomplete friction wheel 310 from failing to rotate. When the incomplete friction wheel 310 rotates counterclockwise, when... When the incomplete friction wheel 310 rotates to contact the vertical friction plate 505, it generates an upward thrust on the vertical friction plate 505. This, in turn, drives the compaction plate 502 to move upward through the vertical friction plate 505. The compaction plate 502 then drives the two vertical shafts 503 to slide upward on the two stops at the top of the longitudinal groove 501, compressing the two reset springs 504. When the incomplete friction wheel 310 rotates to separate from the vertical friction plate 505, the compaction plate 502 resets under the elastic force of the two reset springs 504. In other words, the compaction plate 502 moves downward to squeeze the concrete pavement, effectively achieving the squeezing treatment of the concrete pavement and improving its quality.

[0050] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. Other modifications can be easily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A slipform paver, characterized in that, Including flattened beams; The leveling beam includes a lifting frame, on which an assembly beam slides. Multiple leveling components are detachably connected to the assembly beam and arranged side by side. The assembly beam is connected to a leveling drive unit installed on the lifting frame, so that the multiple leveling components are driven by the leveling drive unit to perform reciprocating sliding leveling and kneading motion in the width direction of the concrete surface. The assembly beam includes two assembly seats connected to the leveling drive unit. The two assembly seats are fixed relative to each other on two sliding sleeves. The two sliding sleeves are fixed relative to each other at both ends of two inverted T-shaped slide rails. The two sliding sleeves slide on the lifting beam at the bottom of the lifting frame. The upper surface of the two assembly seats slides in cooperation with the lower surface of the crossbeam at the top of the lifting frame. Multiple leveling components are connected to the two inverted T-shaped slide rails. The smoothing component includes a smoothing seat with an installation cavity. The smoothing seat slides on two inverted T-shaped slide rails via two inverted T-shaped grooves. A locking screw threaded onto the smoothing seat is inserted into a locking through hole on the inverted T-shaped slide rail. A reinforcing bracket is fixed between the front and rear side plates of the smoothing seat. The center of the reinforcing bracket is rotatably connected to the middle of a rotating shaft. A central turntable fixed at the lower end of the rotating shaft is located in the central hole of the smoothing seat base plate. The lower surface of the central turntable is coplanar with the lower surface of the base plate. A smoothing ring is rotatably connected within the annular groove formed between the central turntable and the central hole. At the bottom, the upper part of the smoothing ring slides on the rotating shaft through a sliding shaft hole, and the protrusion on the upper part of the smoothing ring slides in the axial groove of the rotating shaft; a spring retaining ring is slidably connected to the rotating shaft, and the spring retaining ring is rotatably connected to one end of the height adjusting screw. The middle part of the height adjusting screw is threadedly connected to the reinforcing bracket, and the locking rod threadedly connected to the reinforcing bracket presses against the height adjusting screw; a tension spring fixed at the bottom of the spring retaining ring is sleeved on the rotating shaft, and the bottom of the tension spring abuts against the upper surface of the smoothing ring; a driven gear is fixed at the upper end of the rotating shaft, and the driven gear meshes with a transverse rack fixed at the bottom of the lifting frame; A flat plate is fixed to the front of the front side plate of the smoothing seat. The front of the flat plate is inclined upwards, and the lower surface of the flat plate is coplanar with the lower surface of the bottom plate of the smoothing seat. A sealing sliding connection of a compacting pressure plate is made in the longitudinal groove of the flat plate. The lower surface of the compacting pressure plate is coplanar with the lower surface of the flat plate. The middle part of the two vertical shafts fixed to the compacting pressure plate slides on two blocks at the top of the longitudinal groove. The reset springs fixed between the two blocks and the compacting pressure plate are sleeved on the two vertical shafts. A vertical friction plate fixed to the upper surface of the compacting pressure plate is intermittently frictionally connected to an incomplete friction wheel fixed to the front end of the horizontal rotating shaft. The horizontal rotating shaft rotates on the front side plate of the smoothing seat. A bevel gear one fixed at the rear end of the horizontal rotating shaft meshes perpendicularly with a bevel gear two fixed on the rotating shaft.

2. A rapid construction method for airport concrete pavement, using the slipform paver as described in claim 1, characterized in that... The method includes: The construction formwork for laying concrete pavement forms the paving area; Lay concrete material into the paving area; The concrete material in the paving area is vibrated, smoothed, and leveled using a slipform paver. When using a slipform paver to vibrate and compact the concrete material in the paving area. The slipform paver has a vibrator diameter of 76mm, a vibration frequency of 10,000-12,000 times / min, an amplitude of 3mm, an influence radius of 50cm, a spacing of 35cm between adjacent vibrators, a spacing of 15cm between the outermost vibrator and the construction template, and a travel speed of 1m / min. When the concrete material in the paving area is leveled and slurry-lifted by the slipform paver, the extrusion plate on the slipform paver is used to compress and compact the concrete, so that the concrete forms a flat slab. The leveling beam is used to repeatedly level and squeeze the concrete surface across the entire width, so that a thin slurry layer with uniform thickness and consistent wetness is formed on the concrete surface.

3. The rapid construction method for airport concrete pavement according to claim 2, characterized in that, The construction formwork for laying concrete pavement, forming the paving area, includes: A total station was used to locate the installation position of the construction formwork, and an ink line was used to pre-establish the installation position of the construction formwork. The construction formwork was fixed in its position using triangular supports, and the straightness, verticality, planar position, and top elevation of the formwork were re-measured to ensure that the top elevation of multiple construction formworks met the preset requirements.

4. The rapid construction method for airport concrete pavement according to claim 3, characterized in that, The construction formwork for laying concrete pavement, which forms the paving area, also includes: Asphalt is applied to the contact surface between the construction formwork and the concrete material using a coating device. When laying geotextile in the paving area, the geotextile should be overlapped with 10cm longitudinal seams, and the ends of the geotextile should extend to the outside of the template.

5. The rapid construction method for airport concrete pavement according to claim 4, characterized in that, The construction formwork for laying concrete pavement, which forms the paving area, also includes: The gaps between the construction formwork and the water-stabilized base layer are sealed with mortar, and asphalt felt is pasted on the bottom inside the construction formwork to connect the construction formwork with the geotextile.

6. The rapid construction method for airport concrete pavement according to claim 2, characterized in that, When smoothing concrete material in the paving area using a slipform paver, the smoothing tool on the slipform paver moves the concrete surface laterally in a Z-shape and performs small-amplitude longitudinal smoothing.

7. The rapid construction method for airport concrete pavement according to claim 6, characterized in that, The method also includes: The smoothed concrete surface is kneaded once with a roller, scraped once with a screed, leveled twice with a wooden trowel, and twice with a steel trowel. The concrete material on top of the formwork is then cleaned.

8. The rapid construction method for airport concrete pavement according to claim 7, characterized in that, The method also includes: The concrete surface is roughened, and a joint cutter is used to cut the joints when the concrete structure strength reaches 6-10 MPa.

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