Universal airport pavement panel positioning and paving hoist and use method

Abstract

The application relates to the technical field of airport pavement panel construction, in particular to a general airport pavement panel positioning and paving hoist and a use method. The general airport pavement panel positioning and paving hoist comprises a supporting hanger, a mounting hanger, a rotating mechanism, an X-axis fine adjustment mechanism, a Y-axis fine adjustment mechanism, a positioning mechanism, a ground paving auxiliary supporting mechanism and a control mechanism; the use method comprises the steps of hoisting a pavement panel and paving the pavement panel. The application provides the general airport pavement panel positioning and paving hoist and the use method, the hoist is accurate in positioning, has the rotating mechanism and the double fine adjustment mechanisms in the X and Y axial directions, is high in applicability and simple in operation, is suitable for not only large hoists and travelling structures but also common hoisting equipment, can greatly reduce the construction cost of airport pavement paving, and improves the construction efficiency.

Description

Technical Field

[0001] This invention relates to the field of airport runway slab construction technology, specifically to a universal airport runway slab positioning and installation hoist and its usage method. Background Technology

[0002] The construction of existing airport pavements is generally divided into cast-in-place and prefabricated types. For prefabricated airport pavements, concrete pavement panels are typically prefabricated in a prefabrication yard. These panels are then transported to the fabrication site by transport vehicles, and finally installed using large cranes or overhead crane structures. When using a double overhead crane structure for installation, the connecting parts on the concrete pavement panels are lifted by lifting equipment, and then the pavement panels are placed in the pre-designated paving positions.

[0003] However, while existing lifting devices have the ability to rotate and adjust their attitude (such as CN217498465U), they still require manual operation and visual positioning during the descent of the pavement panels, making the installation of the pavement panels still difficult, labor-intensive, and inefficient. Furthermore, existing lifting devices have high requirements for lifting equipment; renting large cranes and overhead crane structures leads to high construction costs and makes them unsuitable for ordinary cranes. Their applicability needs further improvement. Summary of the Invention

[0004] This invention provides a universal airport pavement positioning and paving lifting tool and its usage method. The lifting tool has precise positioning, a dual fine-tuning mechanism, and strong applicability. It is suitable not only for large cranes and overhead crane structures, but also for ordinary lifting equipment, which can significantly reduce the construction cost of airport pavement paving.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows:

[0006] A universal airport pavement positioning and installation hoist includes a support frame, an installation frame, a rotating mechanism, an X-axis fine-tuning mechanism, a Y-axis fine-tuning mechanism, a positioning mechanism, a ground paving auxiliary support mechanism, and a control mechanism. The support frame is connected to lifting equipment and to the ground paving auxiliary support mechanism, which connects to the ground and provides auxiliary support when the pavement reaches a preset installation position. The installation frame is connected to the support frame via the rotating mechanism and fine-tunes the pavement installation position by rotation. A boom is connected to the installation frame for connecting to the pavement. The boom is connected to the installation frame via the X-axis and Y-axis fine-tuning mechanisms, allowing the pavement to be positioned correctly in the preset installation position through X-axis and Y-axis fine-tuning. The positioning mechanism is connected to the installation frame and provides the control mechanism with the pavement installation position information. The control mechanism is electrically connected to a power source, the rotating mechanism, the X-axis fine-tuning mechanism, the Y-axis fine-tuning mechanism, the positioning mechanism, and the ground paving auxiliary support mechanism via wires.

[0007] Preferably, the support frame includes a rectangular support frame body, with lifting lugs at the four corners of the top of the support frame body for connecting to lifting equipment, and an tilt sensor at the top of the support frame body, the tilt sensor being electrically connected to the control mechanism.

[0008] Preferably, the ground paving auxiliary support mechanism includes a first electric cylinder located vertically at the four corners of the lower end of the support hanger body. The fixed end of the first electric cylinder is fixedly connected to the lower end of the support hanger body, and the telescopic end is connected to a support plate for contacting the ground.

[0009] Preferably, the mounting bracket is also a rectangular structure, and the mounting bracket and the supporting bracket body are coaxially arranged. The rotating mechanism includes a rotating shaft arranged at the axis of the mounting bracket and the supporting bracket body. The upper end of the rotating shaft passes through the supporting bracket body and is rotatably connected to the supporting bracket body through a bearing. A positioning plate is fixedly connected to the top of the rotating shaft. An annular slider is coaxially provided at the bottom end of the positioning plate. An annular groove is fixedly provided at the top of the supporting bracket body opposite to the annular slider. The annular slider and the annular groove are slidably engaged. The bottom end of the rotating shaft is fixedly connected to the mounting bracket. A driven gear is fixedly connected to the rotating shaft. A servo motor is fixedly connected to the bottom end of the supporting bracket body. The output shaft of the servo motor extends vertically downward and is fixedly connected to a driving gear. The driving gear and the driven gear are meshed.

[0010] Preferably, the mounting bracket has two opposite ends with arc-shaped sliders, and the bottom of the support bracket body opposite to the arc-shaped sliders has an annular sliding groove. The arc-shaped sliders are slidably connected to the annular sliding groove. The lower part of the rotating shaft passes through the mounting bracket and is fixedly connected to the mounting bracket. A control box coaxial with the mounting bracket is fixedly connected to the bottom of the rotating shaft. The control box contains a control mechanism, and the upper edge of the control box is fixedly connected to the bottom of the mounting frame through a connecting rod.

[0011] Preferably, the positioning mechanism includes a first visible light emitter fixedly installed at the bottom center axis of the control box. The first visible light emitter emits light A vertically downward, and light A aligns with the center of the track panel. Second visible light emitters are installed on the four sides of the mounting frame, and the second visible light emitters emit light B vertically downward, and light B aligns with the edge line of the preset mounting contour of the track panel.

[0012] Preferably, the boom consists of four second electric cylinders arranged in a rectangular shape at the bottom of the mounting bracket. The fixed end of the second electric cylinder is slidably connected to the bottom of the mounting bracket, and the telescopic end extends vertically downward. The upper end of the track panel is provided with four pre-embedded threaded sleeves that match the positions of the second electric cylinders. A threaded rod is screwed into the threaded sleeve, and a limit block is fixedly connected to the top of the threaded rod.

[0013] Preferably, the X-axis fine-tuning mechanism includes a sleeve, two sliding blocks arranged along the X-axis, and two linear slide rails arranged along the X-axis. The top of the sleeve is connected to the telescopic end of the second electric cylinder via a tension sensor. Through slots are formed on the left and right sides of the lower part of the sleeve, and the two sliding blocks pass through these slots respectively. A linear slide rail is provided on the outer wall of the sleeve where the lower edge of the outer port of the through slot is located. The upper end of the linear slide rail is aligned with the lower edge of the through slot. An upper fixing block is provided on the outer wall of the sleeve where the upper port of the through slot is located. A fixing plate is fixed to the outer side of the upper end of the sliding block. A third electric cylinder is fixedly installed on the outer end of the fixed block. The fixed end of the third electric cylinder is fixedly connected to the upper fixed block, and the telescopic end is connected to the fixed plate. When the third electric cylinder is activated, the sliding block moves left and right along the linear slide rail. The inner ends of the two sliding blocks are respectively provided with arc-shaped jaws that cooperate with the outer wall of the threaded rod. When the two third electric cylinders move synchronously in opposite directions, the threaded rod is clamped by the two arc-shaped jaws. When the two sliding blocks move outward, they provide space for the limiting block to insert upward into the sleeve. The upper end of the sliding block is embedded with a first pressure sensor that cooperates with the limiting block. The top end of the sliding block is slidably engaged with the bottom end of the upper fixed block.

[0014] Preferably, the Y-axis fine-tuning mechanism includes a through groove that passes through the upper and lower end faces of the mounting frame and is arranged along the Y-axis. The top of the left and right side walls of the through groove are respectively provided with straight sliding grooves. The top of the second electric cylinder is coaxially fixedly connected to a sliding rod with a rectangular cross-section. The outer walls of the sliding rod are respectively fixedly connected to two sliders. The two sliders are respectively slidably connected to the straight sliding grooves on both sides. The outer wall of the sliding rod is slidably connected to the inner wall of the through groove. The top of the support frame body where the front and rear sides of the through groove are located is respectively provided with a fourth electric cylinder. The extension and retraction ends of the fourth electric cylinders are respectively fixedly connected to push plates. The end of the push plate is provided with a U-shaped jaw that matches the size of the outer wall of the sliding rod. The U-shaped jaws of the two fourth electric cylinders are arranged opposite each other and grip the outer wall of the sliding rod. When the two fourth electric cylinders move in the same direction, they drive the sliding rod to move back and forth along the Y-axis. The lower end of the push plate is provided with a slider two that slides in cooperation with the straight sliding groove.

[0015] Preferably, the bottom of the control box and the side of the mounting bracket are respectively equipped with laser ranging sensors for measuring the distance between the control box and the top of the track panel to be lifted or the distance between the control box and the ground. The inner surface of the arc-shaped jaws is embedded with a second pressure sensor. The bottom of the control box and the four edges of the mounting frame are respectively equipped with vision sensors for detecting the projection positions of light rays A and B. The crane operator's cab is equipped with a display. The laser ranging sensor, the second pressure sensor, the vision sensor, and the display are electrically connected to the control mechanism through wires. The control mechanism is also electrically connected to two control panels through cables. One control panel is located in the crane operator's cab, and the other is for on-site workers to hold.

[0016] A method for using a universal airport runway slab positioning and paving hoist includes the following steps:

[0017] (1) Mark the outline of the pavement and the center point of the outline at the pre-paving location;

[0018] (2) Connect the lifting equipment to the support spreader body, adjust the length of the connecting lugs to keep the support spreader body horizontal as much as possible; then, align the light beams B projected by the four second visible light emitters to the four edges of the pavement panel to be lifted, align the light beam A to the center of the pavement panel to be lifted, and lower the paving spreader vertically.

[0019] (3) The two third electric cylinders on each sleeve shorten, the two sliding blocks move outward to allow the limit blocks to pass through, the four booms descend, try to keep the light B aligned with the four edges of the track panel, keep the booms descend and allow the four limit blocks on the track panel to enter the sleeves, then the two third electric cylinders on each sleeve extend synchronously and when one second pressure sensor detects a signal, the corresponding third electric cylinder stops, the third electric cylinder on the opposite side extends until the second pressure sensor connected to it also detects a signal, then the two third electric cylinders shorten synchronously by a set distance, the booms shorten, when the two first pressure sensors generate a signal, the two third electric cylinders extend synchronously again to lock the threaded rod through the arc-shaped jaws, when the pressure value of the second pressure sensor reaches the set value, the third electric cylinder stops its action;

[0020] (4) The lifting equipment lifts the pavement panel above the pavement panel outline mark, and slowly lowers the pavement panel vertically, keeping the alignment of light A and light B. At this time, light A is aligned with the center of the lifted pavement panel, and light B is aligned with the four sides of the pavement panel outline mark. When the distance from the ground is set, the first electric cylinder extends, so that the four support plates contact the ground support surface. Adjust the length of the four first electric cylinders to keep the support frame body horizontal.

[0021] (5) Ground personnel operate the control panel, rotate the mounting bracket through the rotating mechanism, and adjust the X-axis fine adjustment mechanism and Y-axis fine adjustment mechanism to align the pavement panel with the pavement panel outline mark on the ground;

[0022] (6) Extend the boom and place the track panel at the designated position marked on the track panel outline.

[0023] The present invention provides a universal airport runway panel positioning and installation lifting tool and its usage method, which has the following beneficial effects:

[0024] This invention provides a universal airport pavement positioning and paving lifting tool and its usage method. The lifting tool has precise positioning, a rotating mechanism and a dual fine-tuning mechanism along the X and Y axes, strong applicability, and simple operation. It is suitable not only for large cranes and overhead crane structures, but also for ordinary lifting equipment, which can significantly reduce the construction cost of airport pavement paving and improve construction efficiency. Attached Figure Description

[0025] Figure 1 A front view of the structure of this invention in use (partial cross-section before lifting);

[0026] Figure 2 A front view of the structure of the present invention during lifting;

[0027] Figure 3 A front view of the structure during lifting according to one embodiment of the present invention;

[0028] Figure 4 A top view of the support bracket of this invention;

[0029] Figure 5 A schematic cross-sectional view of the present invention along the AA direction;

[0030] Figure 6 Schematic diagram of the X-axis fine-tuning mechanism of this invention;

[0031] Figure 7 A magnified schematic diagram of the partial structure at point B in this invention;

[0032] Figure 8 Top view schematic diagram of the working principle of the X-axis fine adjustment mechanism of the present invention;

[0033] Figure 9 A top view of the markings set on the ground during the installation of the pavement slab according to the present invention.

[0034] In the diagram: 01. Track panel; 02. Threaded sleeve; 03. Threaded rod; 04. Limiting block; 05. Center point mark; 06. Expected contact position of support plate; 07. Track panel outline mark; 1. Support hanger; 101. First electric cylinder; 102. Support plate; 103. Lifting lug; 104. Tilt sensor; 2. Mounting hanger; 2. Fixing base; 202. Second visible light emitter; 203. Control box; 204. First visible light emitter; 205. Connecting rod; 3. Second electric cylinder; 301. Sliding rod; 3011. ; Fourth electric cylinder 4; U-shaped jaw 401; linear slide groove 402; through groove 403; X-axis fine adjustment mechanism 5; tension sensor 501; sleeve 502; upper fixing block 503; third electric cylinder 504; sliding block 505; linear slide rail 506; first pressure sensor 507; fixing plate 508; arc-shaped jaw 509; rotating shaft 6; positioning plate 601; annular slide groove 602; annular slider 603; arc-shaped slider 7; annular sliding groove 8; servo motor 9; driven gear 10; driving gear 11.

[0035] It should be noted that the above figures are all schematic diagrams and the size ratios between the various structures of the present invention should not be understood based on the scale relationships shown in the figures. The actual size ratios should be set as needed. Detailed Implementation

[0036] The following description provides a detailed explanation of the embodiments of the present invention in a step-by-step manner. This description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0037] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limiting this invention.

[0038] Example 1

[0039] A universal airport pavement positioning and installation hoist, such as Figure 1-9As shown, the system includes a support hanger 1, an installation hanger 2, a rotation mechanism, an X-axis fine-tuning mechanism 5, a Y-axis fine-tuning mechanism, a positioning mechanism, a ground paving auxiliary support mechanism, and a control mechanism. The support hanger 1 is used to connect with the lifting equipment and is connected to the ground paving auxiliary support mechanism. The ground paving auxiliary support mechanism is used to connect with the ground and provide auxiliary support when the pavement panel 01 reaches above the preset installation position. In this way, the shortcomings of ordinary lifting equipment swaying in the air are overcome, making the present invention applicable to ordinary lifting equipment, such as boom-type (mobile) lifting equipment and bridge-type lifting equipment.

[0040] Furthermore, the mounting bracket 2 is connected to the support bracket below via a rotating mechanism, and the installation position of the pavement panel is fine-tuned by rotation. The mounting bracket 2 is connected to a boom for connecting to the pavement panel 01. The boom is connected to the mounting bracket 2 via an X-axis fine-tuning mechanism and a Y-axis fine-tuning mechanism, and the pavement panel is finally placed into the correct preset installation position through fine-tuning of the X-axis and Y-axis. The positioning mechanism is connected to the mounting bracket 2 and is used to provide the control mechanism with the installation position information of the pavement panel 01. The control mechanism is electrically connected to the power supply, the rotating mechanism, the X-axis fine-tuning mechanism, the Y-axis fine-tuning mechanism, the positioning mechanism, and the ground paving auxiliary support mechanism via wires.

[0041] Example 2

[0042] like Figure 1 , 2 As shown, the support frame 1 includes a rectangular support frame body. The four corners of the top of the support frame body are provided with lifting lugs 103 for connecting with lifting equipment. The top of the support frame body is also provided with an tilt sensor 104, which is electrically connected to the control mechanism.

[0043] like Figure 1-3 As shown, the ground paving auxiliary support mechanism includes a first electric cylinder 101 located vertically at the four corners of the lower end of the support hanger body. The fixed end of the first electric cylinder 101 is fixedly connected to the lower end of the support hanger body, and the telescopic end is connected to a support plate 102 for contacting the ground.

[0044] Example 3

[0045] like Figure 1-8As shown, the mounting bracket 2 is also a rectangular structure. The mounting bracket 2 and the supporting bracket body are coaxially arranged. The rotating mechanism includes a rotating shaft 6 located at the axis of the mounting bracket 2 and the supporting bracket body. The upper end of the rotating shaft 6 passes through the supporting bracket body and is rotatably connected to the supporting bracket body through a bearing. A positioning plate 601 is fixedly connected to the top of the rotating shaft 6. An annular slider 603 is coaxially provided at the bottom end of the positioning plate 601. An annular groove 602 is fixedly provided at the top of the supporting bracket body opposite to the annular slider 603. The annular slider 603 slides in cooperation with the annular groove 602. The bottom end of the rotating shaft 6 is fixedly connected to the mounting bracket 2. A driven gear 10 (e.g., Figure 2 As shown, a servo motor 9 is fixedly connected to the bottom end of the support bracket body. The output shaft of the servo motor 9 extends vertically downward and is fixedly connected to a drive gear 11. The drive gear meshes with the driven gear. By rotating the servo motor, the rotating shaft is driven to rotate, which in turn drives the mounting bracket 2 to rotate. The position of the mounting bracket is finely adjusted by rotating it.

[0046] Example 4

[0047] Based on Embodiment 3, in order to further improve the stability of the rotating mechanism, such as Figure 3 As shown, the mounting bracket 2 has two opposite ends equipped with arc-shaped sliders 7, and the bottom of the supporting bracket body opposite to the arc-shaped sliders 7 is equipped with an annular sliding groove 8. The arc-shaped sliders 7 and the annular sliding groove 8 are slidably connected to ensure the accuracy of rotational positioning and to ensure smooth meshing of the driving gear and the driven gear. Figure 1-8 As shown, the lower part of the rotating shaft 6 passes through the mounting bracket 2 and is fixedly connected to the mounting bracket 2. A control box 203 coaxial with the mounting bracket 2 is fixedly connected to the bottom end of the rotating shaft. The control box 203 is equipped with a control mechanism. The upper edge of the control box 203 is fixedly connected to the bottom of the mounting frame 2 through a connecting rod 205.

[0048] like Figure 1-9 As shown, the positioning mechanism includes a first visible light emitter 204 fixedly installed at the bottom center axis of the control box 203. The first visible light emitter 204 emits light beam A vertically downwards, which aligns with the center of the track panel 01. Second visible light emitters 202 are installed on the four sides of the mounting frame 2, emitting light beam B vertically downwards. Light beam B aligns with the edge line of the preset mounting contour of the track panel. The visible light emitters can be devices such as laser pointers.

[0049] Example 5

[0050] like Figure 1-9As shown, the boom consists of four second electric cylinders 3 arranged in a rectangular pattern at the bottom of the mounting bracket 2. Figure 1-3 (Only the first two are shown), the fixed end of the second electric cylinder 3 is slidably connected to the bottom of the mounting bracket 2 (via a sliding rod), and the telescopic end extends vertically downward. The upper end of the track panel 01 is provided with a pre-embedded threaded sleeve 02 that matches the position of the second electric cylinder 3. A threaded rod 03 is screwed into the threaded sleeve 02, and a limit block 04 is fixedly connected to the top end of the threaded rod 03.

[0051] like Figure 1-9 As shown, the X-axis fine-tuning mechanism 5 includes a sleeve 502, two sliding blocks 505 arranged along the X-axis, and two linear slide rails 506 arranged along the X-axis. The top of the sleeve 502 is connected to the telescopic end of the second electric cylinder 3 through a tension sensor 501. Through slots are provided on the left and right sides of the lower part of the sleeve 502. The two sliding blocks 505 pass through the through slots on both sides respectively. Linear slide rails 506 are provided on the outer wall of the sleeve 502 where the lower edge of the outer port of the through slot is located. The upper end of the linear slide rail 506 is aligned with the lower edge of the through slot. An upper fixing block 503 is provided on the outer wall of the sleeve 502 where the upper port of the through slot is located. A fixing plate 508 is fixed to the outer side of the upper end of the sliding block 505. The outer end of the upper fixing block 503... A third electric cylinder 504 is fixedly installed. The fixed end of the third electric cylinder 504 is fixedly connected to the upper fixed block 503, and the telescopic end is connected to the fixed plate 508. When the third electric cylinder 504 is activated, the sliding block 505 moves left and right along the linear slide rail 506. The inner ends of the two sliding blocks 505 are respectively provided with arc-shaped jaws 509 that cooperate with the outer wall of the threaded rod 03. When the two third electric cylinders 504 move synchronously towards each other, the threaded rod 03 is clamped by the two arc-shaped jaws 509. When the two sliding blocks 505 move outward, they provide space for the limiting block 04 to be inserted upward into the sleeve 502. The upper end of the sliding block 505 is embedded with a first pressure sensor 507 that cooperates with the limiting block 04. The top end of the sliding block 505 is slidably engaged with the bottom end of the upper fixed block 503.

[0052] In this embodiment, the strength of the sleeve and related components should meet the requirements for hoisting the pavement panel. High-strength steel plates are selected as the material, and reinforcing ribs are added to the outer wall of the sleeve if necessary. The inner diameter of the sleeve port should take into account the swaying amplitude that may occur when the paving tool is lowered vertically during hoisting with ordinary lifting equipment. Preferably, the swaying amplitude should not affect the insertion of the limiting block into the sleeve. It is understood that the larger the inner diameter of the sleeve, the greater the range of fine-tuning along the X-axis, and the easier it is to insert the limiting block. Meanwhile, the arc-shaped jaws only need to serve a clamping and fixing function; they do not need to be tightly fitted to the outer wall of the threaded rod. This is more suitable for on-site conditions, such as when the threaded rod is offset, it can still be clamped. Of course, it does not necessarily have to be arc-shaped; it can also be flat. The limiting block is supported by the inner ends of two sliding blocks, preventing the pavement panel from falling during hoisting.

[0053] Example 6

[0054] like Figure 1-9 As shown, the Y-axis fine-tuning mechanism includes a through groove 403 that passes through the upper and lower end faces of the mounting frame 2 and is arranged along the Y-axis. The top of the left and right side walls of the through groove 403 are respectively provided with straight sliding grooves 402. A sliding rod 301 with a rectangular cross-section is coaxially fixedly connected to the top of the second electric cylinder 3. Two sliders 3011 are fixedly connected to the outer walls of the sliding rod 301 on both sides. The two sliders 3011 are slidably connected to the straight sliding grooves 402 on both sides. The outer wall of the sliding rod 301 is slidably connected to the inner wall of the through groove 403. The top of the support frame body on the front and rear sides of the through groove 403 is respectively equipped with a fourth electric cylinder 4. The extension and retraction ends of the fourth electric cylinder 4 are respectively fixedly connected to push plates. The end of the push plate is equipped with a U-shaped jaw 401 that matches the size of the outer wall of the sliding rod 301. The U-shaped jaws 401 of the two fourth electric cylinders 4 are arranged opposite each other and grip the outer wall of the sliding rod 301. When the two fourth electric cylinders 4 move in the same direction, they drive the sliding rod 301 to move back and forth along the Y axis. The lower end of the push plate is equipped with a slider two (not shown in the figure) that slides in cooperation with the linear slide groove 402.

[0055] In this embodiment, the position of the boom is finely adjusted by controlling the sliding rod to move along the Y-axis via the fourth electric cylinder. Since minor errors may occur during the prefabrication of the track panel, causing the threaded rod to deviate from the preset position, Y-axis fine-tuning and the design of the sleeve port size can prevent connection problems. Similarly, the length of the linear groove 402 determines the magnitude of the fine-tuning.

[0056] Example 7

[0057] like Figure 1-9As shown, the bottom of the control box 203 and the side of the mounting frame 2 are respectively equipped with laser rangefinders (not shown in the figure) for measuring the distance between the control box 203 and the top of the track panel to be lifted or the distance between the control box 203 and the ground. The inner surface of the arc-shaped jaws is embedded with a second pressure sensor (not shown in the figure). The bottom of the control box 203 and the four edges of the mounting frame 2 are respectively equipped with vision sensors (not shown in the figure) for detecting the projection positions of light rays A and B. The crane cab is equipped with a display (not shown in the figure). The laser rangefinder, the second pressure sensor, the vision sensor, and the display are electrically connected to the control mechanism through wires. The control mechanism is also electrically connected to two control panels through cables. One control panel is located in the crane cab, and the other is for the on-site workers to hold.

[0058] In this embodiment, the control panel in the cab allows the driver to operate the paving hoist, while the control panel for ground workers can abruptly stop the hoist's operation in case of danger (such as someone suddenly intruding) and alert the driver via a display. The display shows image signals captured by a visual sensor, which can be simplified into an animated image by a control mechanism through a preset program. This allows the driver to determine whether the image aligns with the outline of the pavement panel installation, thus ensuring precise paving. Of course, it is understandable that if ground personnel detect a positional deviation, they can also pause the operation on the control panel to prompt the driver to recheck the position information. To ensure construction effectiveness, when the pavement panel is close to the ground, the ground paving auxiliary support mechanism is activated, allowing ground personnel to operate the control panel to pave the pavement panel while the paving hoist provides stable support.

[0059] Example 8

[0060] Based on the above embodiments, this embodiment discloses a method for using a universal airport pavement positioning and installation hoist, such as... Figure 1-9 As shown, it includes the following steps:

[0061] (1) Draw the outline mark 07 and the center point mark 05 of the pavement at the pre-paving position;

[0062] (2) Connect the lifting equipment to the support lifting body, adjust the length of the connecting lugs to keep the support lifting body horizontal as much as possible; then, align the light rays B projected by the four second visible light emitters to the four edges of the paving panel 01 to be lifted, align the light rays A to the center of the paving panel 01 to be lifted, and lower the paving lifting equipment vertically.

[0063] (3) The two third electric cylinders on each sleeve 502 shorten, the two sliding blocks 505 move outward to allow the limit block 04 to pass, the four booms descend, and try to keep the light B aligned with the four edges of the track panel 01. Keep the booms descending and allow the four limit blocks on the track panel to enter the sleeve (since the inner diameter of the sleeve has a margin, it can overcome the influence of positioning deviation within a certain range). Then, the two third electric cylinders 504 on each sleeve 502 extend synchronously, and when one second pressure sensor detects a signal, the corresponding third electric cylinder stops, and the third electric cylinder on the opposite side extends until the second pressure sensor connected to it also detects a signal (in the standard case, it is also possible for two second pressure sensors to detect signals at the same time, i.e., two (The opposing arc-shaped jaws simultaneously contact the threaded rod), then the two third electric cylinders 504 synchronously shorten the set distance to avoid friction between the arc-shaped jaws and the threaded rod, and the boom shortens. When the two first pressure sensors 507 generate signals, the two third electric cylinders synchronously extend to lock the threaded rod through the arc-shaped jaws. When the pressure value of the second pressure sensor reaches the set value, the third electric cylinders stop operating. During this process, due to the environmental factors of the paving panel stacking, the ground paving auxiliary support mechanism is not used. In case of unexpected situations (such as large misalignment), manual pulling is allowed to smoothly connect the paving panel to the boom. The diameter of the lower end of the sleeve satisfies the requirement that normal shaking has no effect on the insertion of the limit block when the paving lifting equipment lowers the paving lifting tool.

[0064] (4) such as Figure 9 As shown, the lifting equipment hoists the pavement panel above the pavement panel outline mark, causing the pavement panel to slowly descend vertically while maintaining the alignment of light rays A and B. At this time, light ray A is aligned with the center of the hoisted pavement panel, and light ray B is aligned with the four sides of the pavement panel outline mark. When the distance from the ground reaches the set height, the first electric cylinder extends, causing the four support plates to contact the ground support surface. The length of the four first electric cylinders is adjusted to keep the support frame body horizontal. In the installation site, the ground surface is usually horizontal, but if some positions have been installed and others have not, pads can be placed at the expected contact position 06 of the support plates to provide convenience and improve the efficiency of leveling the support frame. During this process, since the light rays are always aligned, even after the support plates are on the ground, the error between the pavement panel and the preset paving position is relatively small and can be quickly corrected by ground personnel through fine adjustments.

[0065] (5) Ground personnel operate the control panel and rotate the installation hanger through the rotating mechanism. Combined with the adjustment of the X-axis fine adjustment mechanism (which drives the pavement panel to move left and right through four sets of arc-shaped jaws) and the Y-axis fine adjustment mechanism (which drives the pavement panel to move back and forth through four sets of U-shaped jaws) to align the pavement panel with the pavement panel outline mark on the ground. Because it has stable support, the paving hanger will not shake. Therefore, the above adjustment process is very simple and can quickly achieve pavement panel alignment.

[0066] (6) Extend the boom and place the track panel 01 at the designated position marked 07 on the track panel outline.

Claims

1. A universal airport pavement positioning and installation hoist, characterized in that, The system includes a support hanger, an installation hanger, a rotating mechanism, an X-axis fine-tuning mechanism, a Y-axis fine-tuning mechanism, a positioning mechanism, a ground paving auxiliary support mechanism, and a control mechanism. The support hanger is connected to the lifting equipment and is also connected to the ground paving auxiliary support mechanism. The ground paving auxiliary support mechanism connects to the ground and provides auxiliary support when the pavement panel reaches the preset installation position. The installation hanger is connected to the support hanger via the rotating mechanism and fine-tunes the installation position of the pavement panel by rotation. A boom is connected to the installation hanger for connecting to the pavement panel. The boom is connected to the installation hanger via the X-axis and Y-axis fine-tuning mechanisms and allows the pavement panel to be finally placed in the correct preset installation position through fine-tuning along the X and Y axes. The positioning mechanism is connected to the installation hanger and provides the control mechanism with the installation position information of the pavement panel. The control mechanism is electrically connected to the power supply, the rotating mechanism, the X-axis fine-tuning mechanism, the Y-axis fine-tuning mechanism, the positioning mechanism, and the ground paving auxiliary support mechanism via wires.

2. The universal airport runway panel positioning and paving hoist as described in claim 1, characterized in that, The support hanger includes a rectangular support hanger body. The four corners of the top of the support hanger body are provided with lifting lugs for connection to lifting equipment. An inclination sensor is also provided at the top of the support hanger body, and the inclination sensor is electrically connected to a control mechanism. The ground paving auxiliary support mechanism includes a first electric cylinder vertically located at the four corners of the lower end of the support hanger body. The fixed end of the first electric cylinder is fixedly connected to the lower end of the support hanger body, and the telescopic end is connected to a support plate for contact with the ground.

3. The universal airport runway slab positioning and installation hoist as described in claim 2, characterized in that, The mounting bracket is also a rectangular structure. The mounting bracket and the supporting bracket body are coaxially arranged. The rotating mechanism includes a rotating shaft located at the axis of the mounting bracket and the supporting bracket body. The upper end of the rotating shaft passes through the supporting bracket body and is rotatably connected to the supporting bracket body through a bearing. A positioning plate is fixedly connected to the top of the rotating shaft. An annular slider is coaxially provided at the bottom end of the positioning plate. An annular groove is fixedly provided at the top of the supporting bracket body opposite to the annular slider. The annular slider and the annular groove are slidably engaged. The bottom end of the rotating shaft is fixedly connected to the mounting bracket. A driven gear is fixedly connected to the rotating shaft. A servo motor is fixedly connected to the bottom end of the supporting bracket body. The output shaft of the servo motor extends vertically downward and is fixedly connected to a driving gear. The driving gear and the driven gear are meshed together.

4. The universal airport pavement positioning and installation hoist as described in claim 3, characterized in that, The mounting bracket has two opposite ends with arc-shaped sliders. The bottom of the support bracket body opposite to the arc-shaped sliders has an annular sliding groove. The arc-shaped sliders are slidably connected to the annular sliding groove. The lower part of the rotating shaft passes through the mounting bracket and is fixedly connected to the mounting bracket. A control box coaxial with the mounting bracket is fixedly connected to the bottom of the rotating shaft. The control box contains a control mechanism. The upper edge of the control box is fixedly connected to the bottom of the mounting frame through a connecting rod.

5. A universal airport runway slab positioning and paving hoist as described in claim 4, characterized in that, The positioning mechanism includes a first visible light emitter fixedly installed at the bottom center axis of the control box. The first visible light emitter emits light A vertically downward, and light A aligns with the center of the track panel. A second visible light emitter is installed on each of the four sides of the mounting frame. The second visible light emitter emits light B vertically downward, and light B aligns with the edge line of the preset mounting contour of the track panel.

6. A universal airport runway slab positioning and paving hoist as described in claim 5, characterized in that, The boom consists of four second electric cylinders arranged in a rectangle at the bottom of the mounting bracket. The fixed end of the second electric cylinder is slidably connected to the bottom of the mounting bracket, and the telescopic end extends vertically downward. The upper end of the track panel is provided with four pre-embedded threaded sleeves that match the positions of the second electric cylinders. A threaded rod is screwed into the threaded sleeve, and a limit block is fixedly connected to the top of the threaded rod.

7. A universal airport runway slab positioning and paving hoist as described in claim 6, characterized in that, The X-axis fine-tuning mechanism includes a sleeve, two sliding blocks arranged along the X-axis, and two linear slide rails arranged along the X-axis. The top of the sleeve is connected to the telescopic end of the second electric cylinder via a tension sensor. Through slots are formed on the left and right sides of the lower part of the sleeve, and the two sliding blocks pass through these slots respectively. Linear slide rails are provided on the outer wall of the sleeve where the lower edge of the outer port of the through slot is located. The upper end of the linear slide rail is aligned with the lower edge of the through slot. An upper fixing block is provided on the outer wall of the sleeve where the upper port of the through slot is located. A fixing plate is fixed to the outer side of the upper end of each sliding block. A third electric cylinder is fixedly installed at the outer end of the block. The fixed end of the third electric cylinder is fixedly connected to the upper fixed block, and the telescopic end is connected to the fixed plate. When the third electric cylinder is activated, the sliding block moves left and right along the linear slide rail. The inner ends of the two sliding blocks are respectively provided with arc-shaped jaws that cooperate with the outer wall of the threaded rod. When the two third electric cylinders move synchronously in opposite directions, the threaded rod is clamped by the two arc-shaped jaws. When the two sliding blocks move outward, they provide space for the limiting block to insert upward into the sleeve. The upper end of the sliding block is embedded with a first pressure sensor that cooperates with the limiting block. The top end of the sliding block is slidably engaged with the bottom end of the upper fixed block.

8. A universal airport runway panel positioning and paving hoist as described in claim 7, characterized in that, The Y-axis fine-tuning mechanism includes a through groove that runs through the upper and lower end faces of the mounting frame and is arranged along the Y-axis. The top of the left and right side walls of the through groove are respectively provided with straight sliding grooves. The top of the second electric cylinder is coaxially fixedly connected to a sliding rod with a rectangular cross-section. The outer walls of the sliding rod are respectively fixedly connected to two sliders. The two sliders are slidably connected to the straight sliding grooves on both sides. The outer wall of the sliding rod is slidably connected to the inner wall of the through groove. The top of the support frame body on the front and rear sides of the through groove is respectively provided with a fourth electric cylinder. The extension and retraction ends of the fourth electric cylinders are respectively fixedly connected to push plates. The end of the push plate is provided with a U-shaped jaw that matches the size of the outer wall of the sliding rod. The U-shaped jaws of the two fourth electric cylinders are arranged opposite each other and grip the outer wall of the sliding rod. When the two fourth electric cylinders move in the same direction, they drive the sliding rod to move back and forth along the Y-axis. The lower end of the push plate is provided with a slider two that slides in cooperation with the straight sliding groove.

9. A universal airport runway panel positioning and paving hoist as described in claim 8, characterized in that, The control box and the side of the mounting frame are equipped with laser rangefinders for measuring the distance between the control box and the top of the track panel to be lifted or the distance between the control box and the ground. The inner surface of the arc-shaped jaws is embedded with a second pressure sensor. The control box and the four edges of the mounting frame are equipped with vision sensors for detecting the projection positions of light rays A and B. The crane cab is equipped with a display. The laser rangefinder, the second pressure sensor, the vision sensor, and the display are electrically connected to the control mechanism via wires. The control mechanism is also electrically connected to two control panels via cables. One control panel is located in the crane cab, and the other is for on-site workers to hold.

10. The method of using a universal airport runway panel positioning and paving hoist as described in claim 9, characterized in that it includes the following steps: (1) Mark the outline of the pavement and the center point of the outline at the pre-paving location; (2) Connect the lifting equipment to the support spreader body, adjust the length of the connecting lugs to keep the support spreader body horizontal as much as possible; then, align the light beams B projected by the four second visible light emitters to the four edges of the pavement panel to be lifted, align the light beam A to the center of the pavement panel to be lifted, and lower the paving spreader vertically. (3) The two third electric cylinders on each sleeve shorten, the two sliding blocks move outward to allow the limit blocks to pass through, the four booms descend, try to keep the light B aligned with the four edges of the track panel, keep the booms descend and allow the four limit blocks on the track panel to enter the sleeves, then the two third electric cylinders on each sleeve extend synchronously and when one second pressure sensor detects a signal, the corresponding third electric cylinder stops, the third electric cylinder on the opposite side extends until the second pressure sensor connected to it also detects a signal, then the two third electric cylinders shorten synchronously by a set distance, the booms shorten, when the two first pressure sensors generate a signal, the two third electric cylinders extend synchronously again to lock the threaded rod through the arc-shaped jaws, when the pressure value of the second pressure sensor reaches the set value, the third electric cylinder stops its action; (4) The lifting equipment lifts the pavement panel above the pavement panel outline mark, and slowly lowers the pavement panel vertically, keeping the alignment of light A and light B. At this time, light A is aligned with the center of the lifted pavement panel, and light B is aligned with the four sides of the pavement panel outline mark. When the distance from the ground is set, the first electric cylinder extends, so that the four support plates contact the ground support surface. Adjust the length of the four first electric cylinders to keep the support frame body horizontal. (5) Ground personnel operate the control panel, rotate the mounting bracket through the rotating mechanism, and adjust the X-axis fine adjustment mechanism and Y-axis fine adjustment mechanism to align the pavement panel with the pavement panel outline mark on the ground; (6) Extend the boom and place the track panel at the designated position marked on the track panel outline.

Images