A laser slurry lifting and leveling machine for concrete of a curved bridge deck

Abstract

The present invention provides a laser slurry lifting and leveling machine for concrete of a curved bridge deck. The laser slurry lifting and leveling machine for concrete of the curved bridge deck includes: a mobile truss, a suspension, a connecting support, and a vibration damping support; two height control hydraulic cylinders, the cylinder bodies of the two height control hydraulic cylinders are respectively installed on the mobile truss; an angle control hydraulic cylinder, the cylinder body of the angle control hydraulic cylinder is connected to a joint support installed on the mobile truss through a joint pin shaft. The laser slurry lifting and leveling machine for concrete of the curved bridge deck provided by the present invention integrates curved surface forming, leveling, and slurry lifting through the use of the laser slurry lifting and leveling machine for concrete of the curved bridge deck. The forming process is automatically controlled, solving the problem of high-precision one-time forming of a large-width, second-order parabolic curved bridge deck, effectively improving the construction quality and efficiency, and saving human resources.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete bridge deck leveling equipment, and particularly to a concrete laser slurry lifting and leveling machine for curved bridge decks. Background Art

[0002] With the substantial increase in train speed, the requirements for the mechanical properties and deck accuracy of railway bridges, especially high-speed railway bridges, have become increasingly high, and the concrete pouring process has also been greatly improved. Currently, a commonly used process is to arrange multiple tensioning steel bars along the length direction of the bridge inside the steel fiber mesh of the mold. At the initial stage after the concrete pouring is completed, the cross-section line of the bridge deck along the length direction is often designed as a quadratic function parabola with the opening facing upwards, and the depth of the parabola of bridges with different lengths is different. Therefore, the bridge deck is a quadratic parabolic surface. After the concrete pouring is completed and solidified, the tensioning hydraulic jack is used to tighten the tensioning steel bars, and the bridge deck is lifted upwards to become a plane under the action of the tensioning steel bars, so that the bridge has a plane bridge deck on the basis of obtaining good mechanical properties. The main material of the concrete used for pouring is "quick-drying cement", and the leveling of a bridge deck with a cross-sectional width of about 10 meters must be completed within one stroke of a leveling machine. The difficulty of using the above process is the one-time high-precision forming of a large-width and quadratic parabolic surface bridge deck.

[0003] The relatively advanced leveling machines used in various projects are laser leveling machines. A laser leveling machine is a device that uses the laser emitted by a transmitter as a reference plane, and controls the leveling head through the laser receiver on the leveling machine to achieve high-precision and rapid leveling of concrete. However, the surfaces formed by these leveling machines are all planes, and due to the limitation of the equipment volume requirements, the leveling width of some leveling machines is limited, and multiple strokes are required to complete the leveling of a large plane, which cannot meet the requirements of the above process. Currently, the implementation of this process is to achieve the forming of a curved bridge deck through manual operation, and it is difficult to guarantee the accuracy of the bridge deck. Currently, there is no public application and relevant public literature on the concrete laser slurry lifting and leveling machine for curved bridge decks.

[0004] Therefore, it is necessary to provide a concrete laser slurry lifting and leveling machine for curved bridge decks to solve the above technical problems. Summary of the Invention

[0005] The present invention provides a concrete laser slurry lifting and leveling machine for curved bridge decks, which solves the problems that the surfaces formed by the leveling machines are all planes, and due to the limitation of the equipment volume requirements, the leveling width of some leveling machines is limited, and multiple strokes are required to complete the leveling of a large plane.

[0006] To solve the above technical problems, the concrete laser slurry lifting and leveling machine for curved bridge decks provided by the present invention includes:

[0007] A mobile truss, a suspension, a connecting support, and a damping support;

[0008] Two height control hydraulic cylinders, the cylinder bodies of the two height control hydraulic cylinders are respectively installed on the moving truss;

[0009] An angle control hydraulic cylinder, the cylinder body of the angle control hydraulic cylinder is connected to a joint support installed on the moving truss through a joint pin shaft, and joint bearings are respectively installed at the lower ends of the lower piston rods of the two height control hydraulic cylinders and the lower end of the piston rod of the angle control hydraulic cylinder. The three joint bearings are respectively connected to three joint supports installed on the suspension through three joint pin shafts;

[0010] Leveling roller A, a pedestal bearing B is installed at one end on the outside of the leveling roller A, and a pedestal bearing A coaxial with the pedestal bearing B is installed at the inner end. The pedestal bearing A is installed on one side of the connecting support;

[0011] A hydraulic motor, the hydraulic motor is installed on the other side of the connecting support, and the hydraulic motor is fixedly connected coaxially with the leveling roller A. The connecting support and the pedestal bearing B are both installed on the suspension;

[0012] Three hydraulic servo valves, the three hydraulic servo valves are respectively installed on the cylinder bodies of the two height control hydraulic cylinders and the angle control hydraulic cylinder. A hydraulic pump station and a controller are respectively installed in the middle of the moving truss;

[0013] The hydraulic pump station is respectively connected to the three hydraulic servo valves and the two hydraulic motors through ten hydraulic hoses;

[0014] A laser level, the laser level is fixed to the mold through a level support;

[0015] Two laser receiving displacement sensors, the two laser receiving displacement sensors are respectively installed at the upper ends of the piston rods of the height control hydraulic cylinders;

[0016] A laser rangefinder, the laser rangefinder is installed on the moving truss at the position of the mold corresponding to the laser it emits, and a laser reflector is installed through a reflector support;

[0017] An inclination sensor, the inclination sensor is installed at any position in the middle of the suspension;

[0018] Two reduction motors, the two reduction motors are respectively installed at both ends of the moving truss, and double-row sprockets are fixedly connected to the output shafts of the two reduction motors;

[0019] Four guiding and driving wheels, the four guiding and driving wheels are divided into two groups, with two in each group, and are respectively arranged at both ends of the moving truss. The four guiding and driving wheels are all installed on the moving truss through two pedestal bearings C, and double-row sprockets are fixedly connected to the input ends of each guiding and driving wheel;

[0020] A leveling squeegee, which is installed between the lower surface of the suspension and behind the leveling roller B;

[0021] A slurry lifting and vibrating plate, which is connected to four shock-absorbing brackets through eight rubber shock absorbers, and the shock-absorbing brackets are installed on the suspension through twelve rubber shock absorbers;

[0022] Three vibrating motors, all of which are installed on the upper surface of the slurry lifting and vibrating plate;

[0023] It can meet the one-time high-precision forming of large-width and second-order parabolic curved bridge decks. The forming process is automatically controlled, effectively improving the construction quality and efficiency and saving human resources;

[0024] Two height control hydraulic cylinders and an angle control hydraulic cylinder can respectively rotate reciprocally relative to the suspension around the axis of the joint pin shaft, so that the suspension moves up and down or rotates reciprocally relative to the moving truss;

[0025] Driven by a hydraulic motor, the leveling roller A can rotate around its axis; the installation of the leveling roller B and its installation are exactly the same as that of the leveling roller A. The leveling roller A and the leveling roller B are arranged in a staggered manner one in front of the other below the suspension;

[0026] Three hydraulic servo valves are respectively installed on the cylinder bodies of the height control hydraulic cylinders and the angle control hydraulic cylinder to control the displacement and movement speed of the piston;

[0027] Receive the laser emitted by the laser leveler and respectively detect the piston displacement of each height control hydraulic cylinder;

[0028] Two reduction motors transmit power to two groups of guiding drive wheels through two chain A, two chain B and six double-row sprockets, so that the two groups of guiding drive wheels can move forward or backward along two guide rails fixed on the mold.

[0029] Preferably, the suspension and the leveling roller A, leveling roller B, leveling squeegee, and slurry lifting and vibrating plate installed thereon move up and down or rotate reciprocally relative to the moving truss through the height control hydraulic cylinder and the angle control hydraulic cylinder. The moving truss is driven by a reduction motor through double-row sprockets, chain A and chain B to make the guiding drive wheels walk forward or backward on the linear guide rail.

[0030] Preferably, the laser receiving displacement sensor receives the laser emitted by the laser leveler, and can detect the piston displacement of each height control hydraulic cylinder, as well as the displacement of the leveling roller A, leveling roller B, leveling squeegee, and slurry lifting and vibrating plate in the height direction. The laser receiving displacement sensor feeds back the detected height direction displacement data to the controller.

[0031] Preferably, the laser emitted by the laser rangefinder hits the laser reflector and receives the laser reflected back by the laser reflector, detects the walking displacement of the leveling machine, and feeds the detected walking displacement data back to the controller.

[0032] Preferably, the tilt sensor detects the tilt data of the suspension and feeds it back to the controller.

[0033] Preferably, the controller pre-enters a quadratic parabola control program, and through the height-direction displacement data fed back by the laser receiving displacement sensor, the walking displacement data fed back by the laser rangefinder, and the tilt data fed back by the tilt sensor, and controls the three hydraulic servo valves, and then through the height control hydraulic cylinder and the angle control hydraulic cylinder, makes the suspension and the leveling roller A, leveling roller B, troweling blade, and slurry lifting vibrating plate installed thereon maintain a horizontal state and walk along the theoretical quadratic parabola trajectory of the control program, forming a closed-loop automatic control.

[0034] Preferably, the bottom surface of the troweling blade is composed of an inclined surface A and a horizontal surface B, and the included angle between the two surfaces is 20 - 40°.

[0035] Preferably, the slurry lifting vibrating plate is welded by a semi-circular pipe and a trough body. The bottom surface of the slurry vibrating plate is composed of an inclined surface C and a horizontal surface D, and the included angle between the two surfaces is 2°. The slurry lifting vibrating plate is driven by a vibration motor installed thereon, and high-frequency vibration realizes concrete slurry lifting and final leveling.

[0036] Preferably, the leveling roller A and the leveling roller B are at the same height. The bottommost bus of their outer circles is higher than the horizontal plane at the bottom of the troweling blade, and the distance a between them is 2.5 mm. And the horizontal plane at the bottom of the troweling blade is higher than the horizontal plane at the bottom of the slurry lifting vibrating plate, and the distance b between them is 5 mm. And the height of the poured concrete is 10 mm higher than the bottommost bus of the outer circles of the leveling roller A and the leveling roller B.

[0037] Preferably, the angular velocity ω1 of the leveling roller A is equal to the angular velocity ω2 of the leveling roller B and has the same direction, and the angular velocity direction at the bottommost bus of its outer circle is the same as the walking direction v of the whole machine.

[0038] Compared with the related technology, the curved bridge deck bridge concrete laser slurry lifting and leveling machine provided by the present invention has the following beneficial effects:

[0039] The present invention provides a laser slurry lifting and leveling machine for concrete of curved bridge decks. The machine maintains a horizontal state through a suspension and leveling rollers A and B, a smoothing scraper, and a slurry lifting and vibrating plate mounted thereon, and travels along the theoretical quadratic parabola trajectory of the control program to form a closed-loop automatic control, realizing the initial leveling of the bridge deck. Moreover, the slurry lifting and vibrating plate is driven by a vibrating motor mounted thereon, and high-frequency vibration is used to achieve concrete slurry lifting and final leveling. By using the laser slurry lifting and leveling machine for concrete of curved bridge decks, which integrates curved surface forming, leveling, and slurry lifting, and the forming process is automatically controlled, it solves the problem of high-precision one-time forming of large-width quadratic parabolic curved bridge decks, effectively improving the construction quality and efficiency and saving human resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 FIG. 6 is a schematic structural diagram of the first embodiment of the laser slurry lifting and leveling machine for concrete of curved bridge decks provided by the present invention;

[0041] Figure 2 FIG. 10 is a rear view of the laser slurry lifting and leveling machine for concrete of curved bridge decks;

[0042] Figure 3 FIG. 14 is a perspective view of the laser slurry lifting and leveling machine for concrete of curved bridge decks;

[0043] Figure 4 FIG. 18 is a schematic diagram of the guiding walking transmission principle;

[0044] Figure 5 FIG. 22 is a schematic diagram of the installation layout principle of the leveling rollers;

[0045] Figure 6 FIG. 26 is a schematic diagram of the installation principle of the vibrating slurry lifting plate;

[0046] Figure 7 FIG. 30 is a cross-sectional view of the smoothing scraper;

[0047] Figure 8 FIG. 34 is an external view of the smoothing scraper;

[0048] Figure 9 FIG. 38 is a side view of the vibrating slurry lifting plate;

[0049] Figure 10 FIG. 42 is an external view of the vibrating slurry lifting plate;

[0050] Figure 11 FIG. 46 is a schematic diagram of the installation layout principle of the leveling rollers, the smoothing scraper, and the vibrating slurry lifting plate;

[0051] Figure 12 FIG. 50 is a schematic diagram of the state principle when the leveling work is about to be completed;

[0052] Figure 13 FIG. 54 is a schematic structural diagram of the first embodiment of the laser slurry lifting and leveling machine for concrete of curved bridge decks provided by the present invention.

[0053] Reference numerals in the figures: 1, moving truss; 2, height control hydraulic cylinder; 3, spherical plain bearing; 4, joint pin shaft; 5, joint support; 6, angle control hydraulic cylinder; 7, suspension; 8, leveling roller A; 9, leveling roller B; 10, connecting support; 11, hydraulic motor; 12, pedestal bearing A; 13, pedestal bearing B; 14, hydraulic servo valve; 15, hydraulic pump station; 16, hydraulic hose; 17, laser level; 18, level support; 19, laser receiving displacement sensor; 20, laser rangefinder; 21, laser reflector; 22, reflector support; 23, inclination sensor; 24, controller; 25, reduction motor; 26, double-row sprocket; 27, guiding drive wheel; 28, pedestal bearing C; 29, chain A; 30, chain B; 31, guide rail; 32, screeding blade; 33, vibrating slurry lifting plate; 34, damping support; 35, rubber shock absorber; 36, vibration motor; 37, lifting structure, 371, sleeve; 372, threaded sleeve; 373, lead screw; 374, sliding plate; 38, mounting plate; 39, mounting groove. Detailed implementation manners

[0054] The present invention will be further described below in conjunction with the accompanying drawings and implementation manners.

[0055] First embodiment

[0056] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 , where Figure 1 is a schematic structural diagram of the first embodiment of the laser slurry lifting and leveling machine for curved bridge deck concrete provided by the present invention; Figure 2 is a rear view of the laser slurry lifting and leveling machine for curved bridge deck concrete; Figure 3 is a perspective view of the laser slurry lifting and leveling machine for curved bridge deck concrete; Figure 4 is a schematic diagram of the guiding walking transmission principle; Figure 5 is a schematic diagram of the leveling roller installation layout principle; Figure 6 is a schematic diagram of the vibrating slurry lifting plate installation principle; Figure 7 is a sectional view of the screeding blade; Figure 8 is an external view of the screeding blade; Figure 9 is a side view of the vibrating slurry lifting plate; Figure 10 is an external view of the vibrating slurry lifting plate; Figure 11 is a schematic diagram of the installation layout principle of the leveling roller, screeding blade, and vibrating slurry lifting plate; Figure 12It is a schematic diagram of the state when the leveling work is about to be completed. The concrete laser screeding machine for curved bridge decks includes:

[0057] Moving truss 1, suspension 7, connecting support 10, vibration damping support 34;

[0058] Two height control hydraulic cylinders 2, and the cylinder bodies of the two height control hydraulic cylinders 2 are respectively installed on the moving truss 1;

[0059] Angle control hydraulic cylinder 6, the cylinder body of the angle control hydraulic cylinder 6 is connected to a joint support 5 installed on the moving truss 1 through a joint pin shaft 4, and joint bearings 3 are respectively installed at the lower ends of the lower piston rods of the two height control hydraulic cylinders 2 and the lower end of the piston rod of the angle control hydraulic cylinder 6. The three joint bearings 3 are respectively connected to three joint supports 5 installed on the suspension 7 through three joint pin shafts 4;

[0060] Screeding roller A8, one end on the outer side of the screeding roller A8 is equipped with a pedestal bearing B13, and one end on the inner side is equipped with a pedestal bearing A12 coaxial with the pedestal bearing B13. The pedestal bearing A12 is installed on one side of the connecting support 10;

[0061] Hydraulic motor 11, the hydraulic motor 11 is installed on the other side of the connecting support 10, and the hydraulic motor 11 is fixedly connected coaxially with the screeding roller A8. Both the connecting support 10 and the pedestal bearing B13 are installed on the suspension 7;

[0062] Three hydraulic servo valves 14, the three hydraulic servo valves 14 are respectively installed on the cylinder bodies of the two height control hydraulic cylinders 2 and the angle control hydraulic cylinder 6. A hydraulic pump station 15 and a controller 24 are respectively installed in the middle of the moving truss 1;

[0063] The hydraulic pump station 15 is respectively connected to the three hydraulic servo valves 14 and the two hydraulic motors 11 through ten hydraulic hoses 16;

[0064] Laser level 17, the laser level 17 is fixed to the mold through a level support 18;

[0065] Two laser receiving displacement sensors 19, the two laser receiving displacement sensors 19 are respectively installed at the upper ends of the piston rods of the height control hydraulic cylinders 2;

[0066] Laser rangefinder 20, the laser rangefinder 20 is installed on the moving truss 1 at the position of the mold corresponding to the laser it emits, and a laser reflector 21 is installed through a reflector support 22;

[0067] Inclinometer 23, the inclinometer 23 is installed at any position in the middle of the suspension 7;

[0068] Two reduction motors 25, the two reduction motors 25 are respectively installed at both ends of the moving truss 1, and double-row sprockets 26 are fixedly connected to the output shafts of the two reduction motors 25;

[0069] Four guiding and driving wheels 27, the four guiding and driving wheels 27 are divided into two groups, with two in each group, and are respectively arranged at both ends of the moving truss 1. The four guiding and driving wheels 27 are all installed on the moving truss 1 through two pedestal bearings C28, and double-row sprockets 26 are fixedly connected to the input ends of each guiding and driving wheel 27;

[0070] The leveling scraper 32 is installed between the lower surface of the suspension 7 and the rear of the leveling roller B9;

[0071] The slurry lifting and vibrating plate 33 is connected to four vibration damping brackets 34 through eight rubber vibration dampers 35, and the vibration damping brackets 34 are installed on the suspension 7 through twelve rubber vibration dampers 35;

[0072] Three vibration motors 36 are all installed on the upper surface of the slurry lifting and vibrating plate 33;

[0073] By using the laser slurry lifting and leveling machine for the concrete of the curved bridge deck, which integrates curved surface forming, leveling, and slurry lifting, and the forming process is automatically controlled, it solves the problem of high-precision one-time forming of the large-width and quadratic parabolic curved bridge deck, effectively improves the construction quality and efficiency, and saves human resources;

[0074] The two height control hydraulic cylinders 2 and the angle control hydraulic cylinder 6 can respectively rotate reciprocally relative to the suspension 7 around the axis of the joint pin shaft 4, so that the suspension 7 moves up and down reciprocally or rotates reciprocally relative to the moving truss 1;

[0075] Driven by the hydraulic motor 11, the leveling roller A8 can rotate around its axis; the installation of the leveling roller B9 and its installation are exactly the same as those of the leveling roller A8. The leveling roller A8 and the leveling roller B9 are arranged in a staggered manner one in front of the other below the suspension 7;

[0076] Three hydraulic servo valves 14 are respectively installed on the cylinder bodies of the two height control hydraulic cylinders 2 and the angle control hydraulic cylinder 6 to control the displacement and movement speed of the piston;

[0077] Receive the laser emitted by the laser level 17 and respectively detect the piston displacement of the two height control hydraulic cylinders 2;

[0078] The two reduction motors 25 transmit power to the two groups of guiding and driving wheels 27 through two chain A29, two chain B30, and six double-row sprockets 26, so that the two groups of guiding and driving wheels 27 can move forward or backward along the two guide rails 31 fixed on the mold.

[0079] The suspension 7 and the leveling rollers A8, leveling rollers B9, screeding blades 32, and slurry lifting vibrating plates 33 mounted thereon reciprocate up and down or rotate reciprocally relative to the moving truss 1 through the height control hydraulic cylinders 2 and angle control hydraulic cylinders 6. The moving truss 1 is driven by a reduction motor 25 through double-row sprockets 26, chain A29, and chain B30 to drive the guiding drive wheels 27 to move forward or backward on the linear guide rail 31.

[0080] The laser receiving displacement sensor 19 receives the laser emitted by the laser level 17 and can detect the piston displacement of the two height control hydraulic cylinders 2, as well as the displacement of the leveling rollers A8, leveling rollers B9, screeding blades 32, and slurry lifting vibrating plates 33 in the height direction. The laser receiving displacement sensor 19 feeds back the detected height direction displacement data to the controller 24.

[0081] The laser emitted by the laser rangefinder 20 hits the laser reflector 21 and receives the laser reflected back by the laser reflector 21, detects the traveling displacement of the finisher, and feeds back the detected traveling displacement data to the controller 24.

[0082] The inclination sensor 23 detects the inclination data of the suspension 7 and feeds it back to the controller 24.

[0083] The controller 24 pre-enters a quadratic parabola control program. Through the height direction displacement data fed back by the laser receiving displacement sensor 19, the traveling displacement data fed back by the laser rangefinder 20, and the inclination data fed back by the inclination sensor 23, it controls the three hydraulic servo valves 14, and then through the height control hydraulic cylinders 2 and angle control hydraulic cylinders 6, makes the suspension 7 and the leveling rollers A8, leveling rollers B9, screeding blades 32, and slurry lifting vibrating plates 33 mounted thereon maintain a horizontal state and travel along the theoretical quadratic parabola trajectory of the control program, forming a closed-loop automatic control to achieve the initial leveling of the bridge deck.

[0084] The bottom surface of the screeding blade 32 consists of an inclined surface A and a horizontal surface B, and the included angle between the two surfaces is 20 - 40° to play the roles of scraping and leveling, providing a flat concrete surface for the slurry lifting vibrating plate 33.

[0085] The slurry lifting vibrating plate 33 is welded by a semi-circular pipe and a trough body. The bottom surface of the slurry vibrating plate 33 consists of an inclined surface C and a horizontal surface D, and the included angle between the two surfaces is 2°. The slurry lifting vibrating plate 33 is driven by the vibration motor 36 mounted thereon, and high-frequency vibration realizes the slurry lifting and final leveling of the concrete. The rubber shock absorber 35 plays a shock-absorbing role, reducing the influence of the high-frequency vibration of the slurry vibrating plate 33 on the other components, and the semi-circular pipe and the trough body are the semi-circular pipe 33 - 1 and the trough body 33 - 2 respectively.

[0086] The leveling roller A8 and the leveling roller B9 are at the same height. The bottom generatrix of their outer circles is higher than the bottom horizontal plane of the leveling scraper 32, and the distance a between them is 2.5 mm. Moreover, the bottom horizontal plane of the leveling scraper 32 is higher than the bottom horizontal plane of the slurry lifting vibrator 33, and the distance b between them is 5 mm. The height of the poured concrete is 10 mm higher than the bottom generatrix of the outer circles of the leveling roller A8 and the leveling roller B9.

[0087] The angular velocity ω1 of the leveling roller A8 is equal to the angular velocity ω2 of the leveling roller B9 and they have the same direction. The angular velocity direction at the bottom generatrix of their outer circles is the same as the traveling direction v of the whole machine.

[0088] The working principle of the curved bridge deck concrete laser slurry lifting and leveling machine provided by the present invention is as follows:

[0089] The laser receiving displacement sensor 19 receives the laser emitted by the laser level 17 and can detect the piston displacement of the two height control hydraulic cylinders 2, that is, the displacement of the leveling roller A8, the leveling roller B9, the leveling scraper 32, and the slurry lifting vibrator 33 in the height direction; the laser receiving displacement sensor 19 feeds back the detected height direction displacement data to the controller 24;

[0090] Then, the laser emitted by the laser rangefinder 20 hits the laser reflector 21 and receives the laser reflected back by the laser reflector 21, thereby detecting the traveling displacement of the leveling machine, and feeding back the detected traveling displacement data to the controller 24; the inclination sensor 23 detects the inclination data of the suspension 7 and feeds it back to the controller 24.

[0091] By pre-entering a quadratic parabola control program into the controller 24, during the working process, based on the height direction displacement data fed back by the laser receiving displacement sensor 19, the traveling displacement data fed back by the laser rangefinder 20, and the inclination data fed back by the inclination sensor 23, the three hydraulic servo valves 14 are controlled. Then, through the height control hydraulic cylinders 2 and the angle control hydraulic cylinders 6, the suspension 7 and the leveling roller A8, the leveling roller B9, the leveling scraper 32, and the slurry lifting vibrator 33 installed thereon are kept in a horizontal state and travel along the theoretical quadratic parabola trajectory of the control program, forming a closed-loop automatic control to achieve the initial leveling of the bridge deck.

[0092] By making the angular velocity of the leveling roller A8 equal to and in the same direction as that of the leveling roller B9, and the angular velocity direction at the bottommost generatrix of their outer circumference being the same as the walking direction of the whole machine, the leveling roller A8 and the leveling roller B9 are at the same height, and the bottommost generatrix of their outer circumference is higher than the bottom horizontal plane of the troweling blade 32; the bottom horizontal plane of the troweling blade 32 is higher than the bottom horizontal plane of the slurry lifting and vibrating plate 33. The bottom surface of the troweling blade 32 consists of an inclined plane A and a horizontal plane B, and the included angle between the two surfaces is between 20° and 40°. The slurry lifting and vibrating plate 33 is welded by a semi-circular pipe 33-1 and a trough body 33-2. The bottom surface of the slurry vibrating plate 33 consists of an inclined plane C and a horizontal plane D, and the included angle between the two surfaces is 2°. The slurry lifting and vibrating plate 33 is driven by a vibration motor 36 installed thereon, and high-frequency vibration realizes concrete slurry lifting and final leveling.

[0093] Compared with the related technology, the curved bridge deck concrete laser slurry lifting and leveling machine provided by the present invention has the following beneficial effects:

[0094] Through the suspension 7 and the leveling roller A8, leveling roller B9, troweling blade 32, and slurry lifting and vibrating plate 33 installed thereon, it maintains a horizontal state and walks along the theoretical quadratic parabola trajectory of the control program, forming a closed-loop automatic control to achieve initial leveling of the bridge deck. And through the slurry lifting and vibrating plate 33 being driven by a vibration motor 36 installed thereon, high-frequency vibration realizes concrete slurry lifting and final leveling. By using the curved bridge deck concrete laser slurry lifting and leveling machine, it integrates curved surface forming, leveling, and slurry lifting, with automatic control during the forming process, solves the problem of high-precision one-time forming of large-width, quadratic parabolic curved bridge decks, effectively improves the construction quality and efficiency, and saves human resources.

[0095] Second Embodiment

[0096] Please refer to Figure 13 , based on the curved bridge deck concrete laser slurry lifting and leveling machine provided in the first embodiment of the present application, the second embodiment of the present application proposes another curved bridge deck concrete laser slurry lifting and leveling machine. The second embodiment is only a preferred mode of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0097] Specifically, the difference of the curved bridge deck concrete laser slurry lifting and leveling machine provided in the second embodiment of the present application is that a lifting structure 37 is provided at the bottom of the laser reflector 21. The lifting structure 37 includes a sleeve 371, a threaded sleeve 372 is rotatably connected to the top of the sleeve 371, a lead screw 373 is threadedly connected inside the threaded sleeve 372, the bottom end of the lead screw 373 penetrates through the sleeve 371 and extends into the inside of the sleeve 371, and the top end of the lead screw 373 is fixed to the bottom of the laser reflector 21;

[0098] By manually rotating the threaded sleeve 372, the lead screw 373 can be driven to move up and down. The up and down movement of the lead screw 373 can drive the laser reflector 21 to move up and down for height adjustment, meeting the usage requirements at different heights and improving the reflection effect of the laser reflector 21.

[0099] Sliding plates 374 are slidably connected to both sides of the sleeve 371, and the tops of the two sliding plates 374 are fixed to the bottom of the laser reflector 21;

[0100] By the up and down sliding of the two sliding plates 374, the stability of the laser reflector 21 during up and down movement is effectively ensured;

[0101] The bottom of the sleeve 371 is fixedly connected with a mounting plate 38, and mounting grooves 39 are formed on both sides of the top of the mounting plate 38;

[0102] The setting of the mounting plate 38 facilitates the installation of the lifting structure 37 and thus the installation of the laser reflector 21.

[0103] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A laser slurry lifting and leveling machine for concrete of a curved bridge deck bridge, characterized in that, Including: Moving truss, suspension, connecting support, damping support; two height control hydraulic cylinders, the cylinder bodies of the two height control hydraulic cylinders are respectively installed on the moving truss; an angle control hydraulic cylinder, the cylinder body of the angle control hydraulic cylinder is connected to a joint support installed on the moving truss through a joint pin shaft, and joint bearings are respectively installed at the lower ends of the lower piston rods of the two height control hydraulic cylinders and the lower end of the piston rod of the angle control hydraulic cylinder, and the three joint bearings are respectively connected to three joint supports installed on the suspension through three joint pin shafts; leveling roller A, a pedestal bearing B is installed at one end on the outer side of the leveling roller A, and a pedestal bearing A coaxial with the pedestal bearing B is installed at the inner end, and the pedestal bearing A is installed on one side of the connecting support; a hydraulic motor, the hydraulic motor is installed on the other side of the connecting support, and the hydraulic motor is fixedly connected coaxially with the leveling roller A, and the connecting support and the pedestal bearing B are both installed on the suspension; three hydraulic servo valves, the three hydraulic servo valves are respectively installed on the cylinder bodies of the two height control hydraulic cylinders and the angle control hydraulic cylinder, and a hydraulic pump station and a controller are respectively installed in the middle of the moving truss; the hydraulic pump station is respectively connected to the three hydraulic servo valves and the two hydraulic motors through ten hydraulic hoses; a laser level, the laser level is fixed on the mold through a level support; two laser receiving displacement sensors, the two laser receiving displacement sensors are respectively installed at the upper ends of the piston rods of the height control hydraulic cylinders; a laser rangefinder, the laser rangefinder is installed on the moving truss at the position of the mold corresponding to the laser emitted by it, and a laser reflector is installed through a reflector support; an inclination sensor, the inclination sensor is installed at any position in the middle of the suspension; two reduction motors, the two reduction motors are respectively installed at both ends of the moving truss, and double-row sprockets are fixedly connected to the output shafts of the two reduction motors; four guiding drive wheels, the four guiding drive wheels are divided into two groups, two in each group, and are respectively arranged at both ends of the moving truss, and the four guiding drive wheels are all installed on the moving truss through two pedestal bearings C, and double-row sprockets are fixedly connected to the input ends of each guiding drive wheel; a troweling scraper, the troweling scraper is installed between the lower surface of the suspension and the back of the leveling roller B; a slurry lifting vibrating plate, the slurry lifting vibrating plate is connected to four damping supports through eight rubber dampers, and the damping supports are installed on the suspension through twelve rubber dampers;Three vibrating motors, all of the three vibrating motors are installed on the upper surface of the slurry lifting vibrating plate. The suspension and the leveling rollers A, leveling rollers B, smoothing scraper, and slurry lifting vibrating plate thereon reciprocate up and down or reciprocally rotate relative to the moving truss through the height control hydraulic cylinders and angle control hydraulic cylinders. The moving truss is driven by a reduction motor through double-row sprockets, chain A, and chain B to drive the guiding drive wheels to move forward or backward on the linear guide rail. The laser receiving displacement sensor receives the laser emitted by the laser leveler and can detect the piston displacement of each height control hydraulic cylinder and the displacement of the leveling rollers A, leveling rollers B, smoothing scraper, and slurry lifting vibrating plate in the height direction. The laser receiving displacement sensor feeds back the detected height direction displacement data to the controller. The laser emitted by the laser rangefinder hits the laser reflector and receives the laser reflected back by the laser reflector, detects the traveling displacement of the leveling machine, and feeds back the detected traveling displacement data to the controller.

2. The surface bridge deck concrete laser slurry lifting and leveling machine according to claim 1, characterized in that, The inclination sensor detects the inclination data of the suspension and feeds it back to the controller.

3. The surface bridge deck concrete laser slurry lifting and leveling machine according to claim 1, characterized in that, The controller pre-enters a quadratic parabola control program, and through the height-direction displacement data fed back by the laser receiving displacement sensor, the walking displacement data fed back by the laser rangefinder, and the inclination data fed back by the inclination sensor, controls three hydraulic servo valves, and then through the height control hydraulic cylinder and the angle control hydraulic cylinder, makes the suspension and the leveling rollers A, leveling rollers B, troweling scraper, and slurry lifting vibrating plate mounted thereon maintain a horizontal state and travel along the theoretical quadratic parabola trajectory of the control program, forming a closed-loop automatic control.

4. The surface bridge deck concrete laser screeding machine according to claim 1, characterized in that, The bottom surface of the troweling scraper consists of an inclined surface A and a horizontal surface B, and the included angle between the two surfaces is 20 - 40°.

5. The concrete laser screeding machine for curved bridge decks according to claim 1, characterized in that, The slurry lifting vibrating plate is welded by a semi-circular pipe and a trough body. The bottom surface of the slurry vibrating plate consists of an inclined surface C and a horizontal surface D, and the included angle between the two surfaces is 2°. The slurry lifting vibrating plate is driven by a vibration motor mounted thereon, and high-frequency vibration realizes concrete slurry lifting and final leveling.

6. The surface bridge deck concrete laser slurry lifting and leveling machine according to claim 1, wherein, The leveling roller A and the leveling roller B are at the same height. The bottommost bus of their outer circles is higher than the horizontal plane at the bottom of the troweling scraper, and the distance a between them is 2.5 mm. And the horizontal plane at the bottom of the troweling scraper is higher than the horizontal plane at the bottom of the slurry lifting vibrating plate, and the distance b between them is 5 mm. The height of the poured concrete is 10 mm higher than the bottommost bus of the outer circles of the leveling roller A and the leveling roller B.

7. The laser slurry lifting and leveling machine for concrete of the curved bridge deck bridge according to claim 1, wherein The angular velocity ω1 of the leveling roller A is equal to the angular velocity ω2 of the leveling roller B and has the same direction. The angular velocity direction at the bottommost bus of its outer circle is the same as the walking direction v of the whole machine.

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