Heavy-duty leveling device and leveling method special for wear-resistant floor construction

Abstract

The application belongs to the technical field of building ground construction equipment, and particularly relates to a heavy leveling device and method for wear-resistant ground construction, which comprises a leveling unit connected with a mobile device, the leveling unit comprising a mounting assembly, a turnover assembly and a leveling assembly; the turnover assembly is hingedly connected to the mounting assembly, and the leveling assembly is arranged on the turnover assembly in a liftable manner; the leveling assembly comprises a counterweight beam and a straightedge connected to the bottom side of the counterweight beam; the turnover assembly is provided with a lifting cylinder, and the lifting cylinder is drivingly connected with the counterweight beam. The counterweight beam and the straightedge are designed, and the spring air bag weight reduction technology is introduced, so that the technical problems of insufficient compaction force, experience-dependent flatness control and the inability of existing automatic equipment to consider self-weight compaction and ground protection in traditional manual straightedge operation are effectively solved, the accurate quantitative control and self-adaptive adjustment of heavy downward pressure are realized, and the consistency of construction quality and the construction efficiency are significantly improved.

Description

Technical Field

[0001] This invention belongs to the technical field of building floor construction equipment, and in particular relates to a heavy-duty leveling device and leveling method for wear-resistant floor construction. Background Technology

[0002] Wear-resistant flooring (such as corundum wear-resistant flooring and metal aggregate wear-resistant flooring) is widely used in large-area flooring projects such as industrial plants, logistics warehouses, parking lots, and supermarkets due to its excellent wear resistance, impact resistance, and integrity. This type of flooring is made by spreading wear-resistant aggregate on the surface of concrete during the initial setting stage, and then mechanically processing it to form a high-density, high-hardness surface layer that integrates with the concrete base layer.

[0003] In the above construction process, the leveling process is the core link that determines the final flatness and construction quality of the ground. A typical existing wear-resistant flooring construction process usually includes: concrete pouring and initial leveling, first application of wear-resistant aggregate, mechanical leveling (secondary leveling), second application of wear-resistant aggregate, mechanical leveling again (tertiary leveling), surface grinding, polishing, and curing. Therefore, after each application of aggregate, at least one leveling operation is required. The purpose is to evenly distribute the applied material and initially compact and level it, laying the foundation for subsequent grinding and finishing.

[0004] Currently, the aforementioned secondary and tertiary leveling processes are mainly completed manually by pushing a 6-meter-long scraper. However, this traditional method has the following significant drawbacks and shortcomings: First, insufficient compaction force. High-quality wear-resistant flooring requires that the spread aggregate be effectively compacted into the concrete surface to achieve a dense bond with the base layer. The weight of a manually pushed screed is limited and cannot provide sufficient static pressure to compact the aggregate, easily leading to weak bonding between the aggregate and the base layer. Existing equipment, such as laser floor leveling machines, can achieve automatic leveling, but their large weight (hundreds of kilograms to tens of tons) limits their applicability, while smaller equipment often lacks sufficient weight.

[0005] Secondly, flatness control relies on manual experience, resulting in poor quality stability. When manually operating a long-distance scraping ruler, it is often done by five or more people. With multiple people operating, it is difficult to maintain a consistent pushing speed, scraping ruler angle, and levelness throughout the entire process, making it difficult to achieve high-precision flatness.

[0006] Third, the work is labor-intensive and inefficient. Pushing a 6-meter-long large scraper back and forth for leveling is extremely physically demanding, especially in large-scale construction, where manual efficiency is low and it is difficult to ensure stable operation for extended periods. Summary of the Invention

[0007] To address the technical problems existing in the background art, the present invention provides a heavy-duty leveling device and leveling method for wear-resistant floor construction.

[0008] To achieve the above objectives, the technical solution provided by the present invention is as follows: A heavy-duty leveling device for wear-resistant floor construction includes a leveling unit that docks with a mobile device. The leveling unit includes an installation component, a flipping component, and a leveling component. The mounting assembly is hinged to a flipping assembly, and the leveling assembly is vertically and flexibly mounted on the flipping assembly. The leveling component includes a counterweight beam and a scraper connected to the bottom side of the counterweight beam. The flipping component is equipped with a lifting cylinder, which is connected to the counterweight beam in a transmission manner.

[0009] Optionally, a plurality of guide rods are evenly distributed in the middle of the counterweight beam. The guide rods are slidably disposed inside the flipping assembly. A plurality of the guide rods extend to the upper end of the flipping assembly and are connected to the drive plate. A first piston rod is disposed inside the lifting cylinder. The first piston rod is connected upward to the drive plate.

[0010] Optionally, the flipping assembly is provided with a plurality of spring airbags, and a plurality of bottom rods are evenly distributed at the bottom end of the drive plate, the bottom rods abutting against the top of the spring airbags.

[0011] Optionally, the upper and lower ends of the spring airbag are respectively provided with end plates, the upper end plate is connected to a central sliding rod, the central sliding rod is slidably disposed in the central hole of the bottom rod, and the bottom end of the bottom rod abuts against the upper end plate.

[0012] Optionally, the flipping assembly includes a frame, with a top plate and a bottom plate respectively provided at the upper and lower ends of the frame. The lifting cylinder is fixed on the bottom plate, and the bottom end of the spring airbag is fixed on the bottom plate. The first piston rod, the bottom rod, and the guide rod all pass through the top plate.

[0013] Optionally, an air chamber seat is connected to the bottom side of the lower end plate, and the air chamber seat has an air inlet that communicates with the spring airbag.

[0014] Optionally, the mounting assembly includes an L-shaped mounting plate with a T-shaped limiting plate on its bottom side. The flipping assembly can rotate to the surface of the limiting plate to maintain a horizontal state. A U-shaped plate is provided at the top of the frame. A flipping cylinder is hinged to one side of the mounting plate. A second piston rod is provided inside the flipping cylinder and is inclined upward and hinged to the U-shaped plate.

[0015] Optionally, the two ends of the counterweight beam extend to both sides of the flipping assembly. The counterweight beam has several evenly distributed slots, and several clamping assemblies corresponding to the slots are detachably mounted on it. These clamping assemblies are used to clamp the scraper. The counterweight beam is an I-beam. The clamping assembly includes a clamping plate and a pad. The upper end of the clamping plate has a vertically mounted mounting part. The mounting part and the interior of the clamping plate form a positioning groove. The shape of the positioning groove is the same as the shape of the I-beam. The clamping plate is fastened to one side of the I-beam through the positioning groove. The pad is located on the other side of the I-beam. The mounting part and the pad are clamped and fixed to the I-beam by bolt assemblies that pass through the slots. The bottom side of the clamping plate has an inclined mounting groove. The scraper is placed in the mounting groove. Several locking screws are threaded onto the side wall of the clamping plate. The locking screws extend into the mounting groove and press against the scraper.

[0016] Optionally, the mounting plate has two first hinge seats spaced apart on its top side, and two rotating shafts spaced apart on the upper side of the frame, the rotating shafts being rotatably disposed in the inner holes of the first hinge seats; the mounting plate has two arc-shaped guide blocks spaced apart on its bottom side, the guide blocks having arc-shaped guide grooves inside, and the frame has two rollers spaced apart on its bottom side, the rollers being slidably disposed in the guide grooves.

[0017] A leveling method for a heavy-duty leveling device specifically designed for wear-resistant floor construction, comprising the following steps: S1, Equipment positioning and initial verification: Move the mobile device equipped with the leveling unit to the pressure testing platform; S2, No-load calibration and contact test: Control the flipping component to flip to a horizontal state, so that the scraper is close to the pressure test platform; start the lifting cylinder to drive the counterweight beam and scraper to descend until the bottom side of the scraper is in contact with the pressure test platform, and then switch to the spring airbag to independently support the counterweight beam and scraper for static pressure test. S3, Weight reduction value setting: Adjust the internal air pressure value P of the spring airbag by the external air source, record the actual pressure value F measured by the pressure test platform under the current air pressure, and calculate the weight reduction value △G under the current air pressure; △G=GF; Wherein, G is the total weight of the counterweight beam and the scraper; Adjust the internal air pressure P of the spring airbag to obtain multiple sets of corresponding weight reduction values ​​△G, and establish a mapping relationship between air pressure and weight reduction value; S4, transition in position: The control flipping component flips, causing the scraper to move away from the ground, thus achieving obstacle avoidance movement. The mobile device is then moved to the ground area to be leveled, which is the concrete pouring area and the ground after the initial leveling. S5, Preset Working Height: Control the flipping component to flip to a horizontal state, drive the lifting cylinder to make the counterweight beam and scraper descend, until the distance between the bottom of the scraper and the ground is controlled at a hovering height of 2mm-5mm; S6, adaptive leveling: Based on the mapping relationship between air pressure and weight reduction, determine the target air pressure P1 according to the weight required for leveling the current construction ground, and adjust the spring airbag to the target air pressure. Release the pressure holding state of the lifting cylinder, so that the counterweight beam and scraper can compress the spring air bag by their own weight. The air bag outputs a stable supporting upward pressure, which reduces the weight of the counterweight beam and scraper, and then presses the bottom side of the scraper onto the spread material of the wear-resistant ground surface. The mobile device is activated, which moves the scraper along a preset path to simultaneously compact and level the surface material.

[0018] The present invention has the following advantages and beneficial effects: This invention introduces spring airbag weight reduction technology, pressure testing platform calibration technology, and air pressure-weight reduction mapping control technology into the field of wear-resistant flooring construction. It effectively solves the technical problems of insufficient compaction force, reliance on experience for flatness control, high labor intensity, and the inability of existing automated equipment to balance self-weight compaction and ground protection in traditional manual scraping operations. It achieves precise quantitative control and adaptive adjustment of the scraping pressure, significantly improving the consistency of construction quality and construction efficiency.

[0019] The present invention is equipped with a counterweight beam and a scraper. The entire scraper is reliably installed by being pressed and tightened by the counterweight beam, and the overall weight is used to compact and level it, avoiding the uneven pressure between the two ends and the middle of the long scraper that occurs when using a light scraper for leveling.

[0020] This invention utilizes a spring-loaded airbag as a weight-reduction actuator. By adjusting the internal air pressure of the airbag, a controllable supporting pressure is generated to quantitatively offset the total weight G of the counterweight beam and the screed. In the rough leveling stage, a lower weight-reduction value (smaller ΔG) is set, allowing the screed to effectively press the wear-resistant aggregate into the concrete surface with high pressure, ensuring a dense bond between the aggregate and the base layer. In the fine leveling stage, a higher weight-reduction value (larger ΔG) is set, allowing the screed to perform leveling with lighter pressure. This adaptive capability, adjusting according to surface quality requirements, is unattainable by traditional fixed-weight equipment or purely rigid connection equipment. By setting the weight-reduction compensation value ΔG, the actual pressure F of the screed on the ground is strictly controlled within the range allowed by the construction process. Unlike traditional heavy equipment that relies entirely on its own weight or a scraper that directly scrapes the ground, this invention uses airbags to actively reduce weight. It can adjust the pressure on the ground according to different construction conditions, fundamentally eliminating problems such as ground indentations, excessive aggregate settling, or damage to the base structure caused by excessive weight of the leveling unit. It is especially suitable for high-specification wear-resistant flooring construction where surface quality requirements are extremely high.

[0021] This invention releases the pressure-holding state after the height is preset by the lifting cylinder, allowing the counterweight beam and scraper to be fully supported by the spring airbags. Because the spring airbags have excellent damping characteristics and vibration isolation performance, their output supporting pressure is not affected by the vehicle's vibrations during the movement of the mobile equipment, thus ensuring that the pressure applied to the ground material by the scraper remains constant throughout its 6-meter length. Attached Figure Description

[0022] Figure 1 This is one of the structural diagrams of the heavy-duty leveling device for wear-resistant floor construction of the present invention; Figure 2 This is the second structural diagram of the heavy-duty leveling device for wear-resistant floor construction of the present invention; Figure 3 This is a front view of the heavy-duty leveling device for wear-resistant floor construction according to the present invention; Figure 4 for Figure 3 The left view; Figure 5 for Figure 3 A cross-sectional view along the AA direction; Figure 6 for Figure 1 A magnified view of a portion of point a; Figure 7 for Figure 1 A magnified view of a section at point b in the middle; Figure 8 for Figure 5 A cross-sectional view of the leveling component used for leveling; Figure 9 This is one of the structural diagrams of the mounting components of the present invention; Figure 10 This is the second structural diagram of the mounting component of the present invention; Figure 11 This is one of the structural diagrams of the flipping component of the present invention; Figure 12 This is the second structural diagram of the flipping component of the present invention; Figure 13 This is the third structural diagram of the flipping component of the present invention; Figure 14 This is a front view of the flipping component of the present invention; Figure 15 for Figure 14 The right view; Figure 16 This is a structural diagram of the leveling component of the present invention; Figure 17 This is a structural diagram of the counterweight beam of the present invention; Figure 18 This is one of the structural diagrams of the clamping assembly of the present invention; Figure 19 This is the second structural diagram of the clamping component of the present invention.

[0023] Reference numerals: 1-Mounting component, 11-Mounting plate, 12-Mounting hole, 13-First stiffener, 14-First hinge seat, 15-Guide block, 16-Guide groove, 2-Tilting component, 21-Frame, 22-Roller, 23-Rotating shaft, 24-U-shaped plate, 25-Third hinge seat, 26-Base plate, 261-Fourth clearance hole, 27-Top plate, 271-First clearance hole, 272-Second clearance hole, 273-Third clearance hole, 28-Guide cylinder, 3-Counterweight beam, 31-Strip groove, 32-Guide rod, 33-Drive plate, 34 - Bottom rod, 35- Center hole, 4- Scraper, 5- Clamping assembly, 51- Clamping plate, 52- Mounting part, 53- Positioning slot, 54- Mounting slot, 55- Threaded hole, 56- Locking screw, 57- Pad, 58- Bolt assembly, 6- Limiting plate, 61- Connecting bolt, 62- Second stiffener, 63- Second hinge seat, 7- Spring airbag, 71- End plate, 72- Center slide rod, 73- Air chamber seat, 74- Air inlet, 8- Lifting cylinder, 81- First piston rod, 9- Tilting cylinder, 91- Second piston rod, 10- Ground. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0025] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0026] Example like Figures 1 to 19 As shown, a heavy-duty leveling device for wear-resistant floor construction includes a leveling unit that docks with a mobile device. The leveling unit includes an installation component 1, a flipping component 2, and a leveling component.

[0027] In this invention, the mobile equipment selected is a mobile device that has little impact on the construction ground, including but not limited to wheeled chassis with rubber tires, rubber tracked chassis, or tracked chassis with rubber track plates, to ensure a more uniform distribution of pressure on the ground and to prevent damage to the ground. This is suitable for construction operations with high requirements for ground protection.

[0028] like Figures 1 to 8As shown, the mounting component 1 is fixed on the mobile device as a whole, and the rotating component 2 is hinged to the mounting component 1. The leveling component is raised and lowered on the rotating component 2.

[0029] like Figures 1 to 8 As shown, the leveling assembly includes a counterweight beam 3 and a scraper 4 connected to the bottom side of the counterweight beam 3. The counterweight beam 3 has sufficient weight and rigidity, and its length is the same as that of the scraper 4, ensuring that the scraper 4 can be reliably pressed and fixed along its entire length, thus ensuring that the scraper 4 is subjected to uniform force.

[0030] like Figures 1 to 8 As shown, the tilting component 2 is equipped with a lifting cylinder 8, which is connected to the counterweight beam 3 for driving the leveling component to move up and down.

[0031] like Figure 1 , Figure 7 , Figures 11-16 As shown, several guide rods 32 are evenly distributed in the middle of the counterweight beam 3. The guide rods 32 are slidably disposed inside the flipping assembly 2. Several guide rods 32 extend to the upper end of the flipping assembly 2 and are connected to the drive plate 33. The lifting cylinder 8 is provided with a first piston rod 81 inside. The first piston rod 81 is connected upward to the drive plate 33, so that the counterweight beam 3 and the scraper 4 can be driven to rise and fall by the lifting cylinder 8.

[0032] like Figure 1 , Figure 7 , Figures 11-16 As shown, the flipping assembly 2 is equipped with several spring airbags 7, and several bottom rods 34 are evenly distributed at the bottom end of the drive plate 33. The bottom rods 34 abut against the top of the spring airbags 7. This design allows the counterweight beam 3 and the scraper 4 to be supported on the spring airbags 7 to reduce weight when they descend.

[0033] like Figure 1 , Figure 7 , Figures 11-16 As shown, end plates 71 are provided at the upper and lower ends of the spring airbag 7. The upper end plate 71 is connected to a central slide rod 72. The central slide rod 72 is slidably disposed in the central hole 35 of the bottom rod 34 to achieve precise sliding guidance. The bottom end of the bottom rod 34 abuts against the upper end plate 71 to ensure that the bottom rod 34 can act evenly on the bottom spring airbag 7.

[0034] like Figures 1 to 7 , Figures 11-16As shown, the tilting assembly 2 includes a frame 21, with a top plate 27 and a bottom plate 26 at its upper and lower ends respectively. Two lifting cylinders 8 are symmetrically arranged on the bottom plate 26. Four spring airbags 7 are evenly distributed, with their bottom ends fixed to the bottom plate 26. The first piston rod 81, the bottom rod 34, and the guide rod 32 all pass through the top plate 27. Specifically, the top plate 27 has a first clearance hole 271, a second clearance hole 272, and a third clearance hole 273. The bottom plate 26 has a fourth clearance hole 261 aligned with the first clearance hole 271. A guide cylinder 28 is fixed between the top plate 27 and the bottom plate 26, coaxial with the fourth clearance hole 261. The guide rod 32 is slidably disposed within the guide cylinder 28, enabling stable lifting and lowering of the counterweight beam 3 and the scraper 4. The bottom rod 34 extends from the second clearance hole 272, and the first piston rod 81 extends from the third clearance hole 273.

[0035] like Figure 5 As shown, the bottom side of the lower end plate 71 is connected to an air chamber seat 73. An air inlet 74 communicating with the spring airbag 7 is provided on the air chamber seat 73. The air inlet 74 is connected to the air supply equipment through a pipe.

[0036] like Figures 1-10 As shown, the mounting assembly 1 includes an L-shaped mounting plate 11, and a T-shaped limiting plate 6 is provided on the bottom side of the mounting plate 11. The flipping assembly 2 can rotate to the surface of the limiting plate 6 to maintain a horizontal state (e.g., Figure 8 (As shown). A U-shaped plate 24 is provided at the top of the frame 21. A tilting cylinder 9 is hinged to one side of the mounting plate 11. A second piston rod 91 is provided inside the tilting cylinder 9. The second piston rod 91 is tilted upward and hinged to the U-shaped plate 24. By using the tilting cylinder 9, the angle of the entire tilting assembly 2 and the flattening assembly can be adjusted to rotate to the tilted storage state (as shown). Figure 5 (as shown) or horizontal working state (such as) Figure 8 (As shown).

[0037] Specifically, a second hinge seat 63 is provided in the middle of the mounting plate 11, a third hinge seat 25 is provided in the middle of the bottom side of the U-shaped plate 24, the tilting cylinder 9 is rotatably connected to the second hinge seat 63, and the second piston rod 91 is rotatably connected to the third hinge seat 25.

[0038] The limiting plate 6 is T-shaped and is fitted tightly against the side and bottom walls of the mounting plate 11. Several first stiffening plates 13 are evenly distributed on one side of the mounting plate 11, and several second stiffening plates 62 are evenly distributed on one side of the limiting plate 6 to enhance the overall structural strength. The limiting plate 6 and the mounting plate 11 are connected as a single unit by several connecting bolts 61. Several mounting holes 12 are also provided at the bottom of the mounting plate 11 for connection to mobile devices.

[0039] like Figure 1 and Figure 2 As shown, the scraper 4 is a long-distance scraper, so the two ends of the counterweight beam 3 extend to both sides of the flipping assembly 2. The width of the mobile device and the width of the flipping assembly 2 are roughly the same. The two ends of the counterweight beam 3 extend outward, mainly to maintain sufficient gravity acting evenly on the scraper 4.

[0040] like Figure 5 , Figures 17-19 As shown, the counterweight beam 3 is an I-beam with several strip grooves 31 evenly distributed on it. The counterweight beam 3, being an I-beam, has sufficient weight on its own, but the addition of the strip grooves 31 further reduces its weight to a reasonable range, while also facilitating connection with the scraper 4.

[0041] like Figure 5 , Figures 17-19 As shown, the counterweight beam 3 is detachably equipped with several clamping components 5 corresponding to the strip groove 31. The clamping components 5 are used to clamp the scraper 4, so as to realize the scraper 4 and the detachable installation.

[0042] like Figure 5 , Figures 17-19 As shown, the clamping assembly 5 includes a clamping plate 51 and a pad 57. The upper end of the clamping plate 51 is vertically provided with an installation part 52. The installation part 52 and the interior of the clamping plate 51 form a positioning groove 53. The shape of the positioning groove 53 is the same as that of the I-beam. The clamping plate 51 is fastened to one side of the I-beam through the positioning groove 53. The pad 57 is provided on the other side of the I-beam. The installation part 52 and the pad 57 are clamped and fixed to the I-beam by a bolt assembly 58. The bolt assembly 58 passes through the strip groove 31, thereby clamping and fixing the clamping plate 51 and the pad 57 to the counterweight beam 3.

[0043] like Figure 5 , Figures 17-19 As shown, the bottom side of the clamping plate 51 is triangular in shape, and an inclined mounting groove 54 is provided on its bottom side. The scraper 4 is inclinedly placed in the mounting groove 54, providing an angle for easy leveling. Several threaded holes 55 are provided on the side wall of the clamping plate 51, and locking screws 56 are threaded into the threaded holes 55. The locking screws 56 extend into the mounting groove 54 and press against the scraper 4 to achieve stable installation of the scraper 4.

[0044] Reference Figure 5 and Figure 8After the clamping assembly 5 is fixed to the counterweight beam 3, the entire positioning slot 53 evenly wraps around the bottom side of the counterweight beam 3, and the scraper 4 is located directly below the counterweight beam 3, ensuring the stable force distribution of the entire clamping assembly 5, thereby ensuring that the bottom clamping plate 51 and the scraper can be subjected to a stable vertical downward self-weight. In this invention, apart from the counterweight beam 3 having sufficient weight, all other components are made of lightweight materials such as aluminum alloy, including the scraper 4 and the clamping assembly 5, which are both made of aluminum alloy. Therefore, due to the structural characteristics and weight of the I-beam, the entire counterweight beam 3 is subjected to a vertical downward gravity, ensuring that the scraper 4 is subjected to a vertical downward pressure.

[0045] like Figures 1 to 11 As shown, two first hinge seats 14 are spaced apart on the top side of the mounting plate 11, and two rotating shafts 23 are spaced apart on the upper side of the frame 21. The rotating shafts 23 are rotatably mounted in the inner holes of the first hinge seats 14 to realize the rotational installation of the frame 21.

[0046] like Figures 1 to 11 As shown, two arc-shaped guide blocks 15 are spaced apart on the bottom side of the mounting plate 11. Arc-shaped guide grooves 16 are opened inside the guide blocks 15. Two rollers 22 are spaced apart on the bottom side of the frame 21. The rollers 22 are slidably arranged in the guide grooves 16 to realize the guiding and limiting of the frame 21 when it rotates, and enhance the stability of rotation.

[0047] A leveling method for a heavy-duty leveling device specifically designed for wear-resistant floor construction, comprising the following steps: S1, Equipment Positioning and Initial Verification: Move the mobile device equipped with the leveling unit to the pressure testing platform.

[0048] S2, No-load calibration and contact test: Control the flipping component 2 to flip to a horizontal state, so that the scraper 4 is close to the pressure test platform; start the lifting cylinder 8 to drive the counterweight beam 3 and the scraper 4 to descend until the bottom side of the scraper 4 is in contact with the pressure test platform, and then switch to the spring airbag 7 to independently support the counterweight beam 3 and the scraper 4 for static pressure test.

[0049] S3, weight reduction value setting: Adjust the internal air pressure value P of the spring airbag 7 by the external air source, record the actual pressure value F measured by the pressure test platform under the current air pressure, and calculate the weight reduction value △G under the current air pressure; △G=GF; Wherein, G is the total weight of the counterweight beam 3 and the scraper 4; Adjust the internal air pressure value P of the spring airbag 7 to obtain multiple sets of corresponding weight reduction values ​​△G, and establish a mapping relationship between air pressure and weight reduction value.

[0050] Among them, the pressure testing platform selects commercial standard equipment (such as weighbridges or weighing platforms), and steps S1-S3 are the pre-use preparation workflow.

[0051] S4, transition in position: The control flipping component 2 flips, causing the scraper 4 to move away from the ground, enabling obstacle avoidance movement. This allows the mobile device to be moved to the area 10 to be leveled. This area 10 can be either the concrete pouring area or the area after the initial leveling, or the area after the first application of wear-resistant aggregate and subsequent leveling. The specific choice depends on the actual situation. The principle is that the construction surface must have sufficient strength to allow the mobile device / or multiple people to walk on it before the scraper 4 can be used for leveling.

[0052] S5, Preset Working Height: Control the flipping component 2 to flip to a horizontal state, drive the lifting cylinder 8 to make the counterweight beam 3 and scraper 4 descend, until the distance between the bottom side of the scraper 4 and the ground is controlled at a hovering height of 2mm-5mm, and at this time the spring airbag 7 just abuts against the bottom rod 34, and the weight reduction value is zero.

[0053] S6, adaptive leveling: Based on the mapping relationship between air pressure and weight reduction, determine the target air pressure P1 according to the weight required for leveling the current construction ground, and adjust the spring airbag 7 to the target air pressure.

[0054] Specifically: In the rough leveling stage, for example, when the ground area is a concrete pouring area or a ground after the initial leveling, a lower weight reduction value (smaller ΔG) is set so that the scraper 4 can effectively press the wear-resistant aggregate into the concrete surface with high pressure, ensuring a dense bond between the aggregate and the base layer; In the fine leveling stage, for example, when the ground is a ground after the first application of wear-resistant aggregate and the second leveling, a higher weight reduction value (larger ΔG) is set so that the scraper 4 can perform leveling with light pressure.

[0055] When leveling, release the pressure holding state of the lifting cylinder 8, so that the counterweight beam 3 and the scraper 4 can freely compress the spring air bag 7 by their own weight. The spring air bag 7 outputs a stable supporting upward pressure, which reduces the weight of the counterweight beam 3 and the scraper 4, and then presses the bottom side of the scraper 4 tightly onto the spread material of the wear-resistant ground surface.

[0056] The mobile device is activated, which moves the scraper 4 along a preset path to simultaneously compact and level the surface material.

[0057] This invention releases the pressure-holding state after the height is preset by the lifting cylinder 8, allowing the counterweight beam 3 and the scraper 4 to be fully supported by the spring airbag 7. Because the spring airbag 7 has excellent damping characteristics and vibration isolation performance, its output supporting pressure is not affected by the vehicle body vibration during the movement of the mobile device, thus ensuring that the pressure applied to the ground material by the scraper 4 remains constant throughout its 6-meter length.

[0058] In this invention, one way to release the pressure-holding state is to connect the oil passages of the rod-side and rodless-side chambers of the lifting cylinder 8. At this time, the oil passages inside the lifting cylinder 8 can flow freely, and the lifting cylinder 8 functions as a damper. Thus, the lifting cylinder 8 no longer acts as an active actuator but transforms into a passive damping element.

[0059] When the rod chamber and rodless chamber of the lifting cylinder 8 are connected by oil circuits, the extension and retraction of the piston rod only needs to overcome the flow resistance generated by the oil flow inside the cylinder, which is positively correlated with the piston speed. Therefore, the lifting cylinder 8 provides controllable damping constraints on the vertical movement of the counterweight beam 3 and the scraper 4, allowing the scraper 4 to adapt to changes in ground reaction force while limiting the displacement speed to prevent violent jumping or sudden sinking of the scraper 4.

[0060] When the scraper 4 encounters uneven thickness of wear-resistant aggregate during its movement, the specific working process is as follows: When encountering aggregate accumulation (increased thickness): the ground reaction force on the bottom side of the scraper 4 increases. This reaction force overcomes the actual downward pressure of the counterweight beam 3 and the scraper 4, pushing the scraper 4 and the counterweight beam 3 upward. At this time, the piston rod of the lifting cylinder 8 is passively compressed, and the hydraulic oil in the rod chamber flows into the rodless chamber through the connecting oil passage. The damping force generated during the oil flow slows down the rising speed of the scraper 4, allowing the scraper 4 to rise smoothly and avoid rigid impact or violent bouncing due to sudden encounter with hard aggregate. At the same time, it can also ensure that the scraper 4 continuously compacts the aggregate, ensuring the compaction effect.

[0061] When the aggregate is sparse (thickness decreases): the ground reaction force on the bottom side of the scraper 4 decreases, and the counterweight beam 3 and scraper 4 move downward under their own weight. The piston rod of the lifting cylinder 8 is passively extended, and the hydraulic oil in the rodless chamber flows into the rod chamber through the connecting oil passage. The oil flow damping also slows down the descent speed of the scraper 4, allowing the scraper 4 to fall smoothly back to the new equilibrium position, avoiding impact due to sudden loss of support, and preventing the scraper 4 from causing excessive scraping or indentation on the ground.

[0062] Therefore, when the thickness of the spread wear-resistant aggregate is uneven, the scraper 4, in conjunction with the spring airbag 7, can float freely when it encounters significant resistance. At this time, the lifting cylinder 8 adapts accordingly, thereby reducing the scraping effect on the ground. Furthermore, due to the presence of oil circuits inside the lifting cylinder 8, with a certain degree of damping, the scraper 4 can slowly adapt to the lifting and lowering after encountering the resistance of the uneven aggregate thickness. Because the scraper 4 can adaptively follow the changes in aggregate thickness and always maintain effective contact, the pressure exerted by the scraper 4 on the ground remains basically constant in all sections and at all times. This ensures that the compaction and leveling quality of all sections is uniform and consistent, avoiding the "under-pressure" or "over-pressure" problems that occur in traditional equipment where the aggregate thickness is uneven.

[0063] The above are merely preferred embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A heavy-duty leveling device for wear-resistant floor construction, comprising a leveling unit that interfaces with a mobile device, characterized in that: The leveling unit includes an installation component, a flipping component, and a leveling component; The mounting assembly is hinged to a flipping assembly, and the leveling assembly is vertically and flexibly mounted on the flipping assembly. The leveling component includes a counterweight beam and a scraper connected to the bottom side of the counterweight beam. The flipping component is equipped with a lifting cylinder, which is connected to the counterweight beam in a transmission manner.

2. The heavy-duty leveling device for wear-resistant floor construction according to claim 1, characterized in that: Several guide rods are evenly distributed in the middle of the counterweight beam. The guide rods are slidably disposed inside the flipping assembly. Several of the guide rods extend to the upper end of the flipping assembly and are connected to the drive plate. A first piston rod is disposed inside the lifting cylinder. The first piston rod is connected upward to the drive plate.

3. The heavy-duty leveling device for wear-resistant floor construction according to claim 2, characterized in that: The flipping assembly is provided with several spring airbags, and several bottom rods are evenly distributed at the bottom end of the drive plate, with the bottom rods abutting against the top of the spring airbags.

4. The heavy-duty leveling device for wear-resistant floor construction according to claim 3, characterized in that: The spring airbag has end plates at its upper and lower ends, and a central sliding rod is connected to the upper end plate. The central sliding rod is slidably disposed in the central hole of the bottom rod, and the bottom end of the bottom rod abuts against the upper end plate.

5. The heavy-duty leveling device for wear-resistant floor construction according to claim 4, characterized in that: The flipping assembly includes a frame, with a top plate and a bottom plate respectively provided at the upper and lower ends of the frame. The lifting cylinder is fixed on the bottom plate, and the bottom end of the spring airbag is fixed on the bottom plate. The first piston rod, the bottom rod, and the guide rod all pass through the top plate.

6. The heavy-duty leveling device for wear-resistant floor construction according to claim 5, characterized in that: An air chamber seat is connected to the bottom side of the lower end plate, and an air inlet communicating with the spring airbag is provided on the air chamber seat.

7. The heavy-duty leveling device for wear-resistant floor construction according to claim 5, characterized in that: The mounting assembly includes an L-shaped mounting plate with a T-shaped limiting plate on its bottom side. The flipping assembly can rotate to the surface of the limiting plate to maintain a horizontal state. A U-shaped plate is provided at the top of the frame. A flipping cylinder is hinged to one side of the mounting plate. A second piston rod is provided inside the flipping cylinder and is inclined upward and hinged to the U-shaped plate.

8. The heavy-duty leveling device for wear-resistant floor construction according to claim 1, characterized in that: The counterweight beam extends to both sides of the flipping assembly. Several slots are evenly distributed on the counterweight beam. Several clamping assemblies corresponding to the slots are detachably mounted on the counterweight beam for clamping the scraper. The counterweight beam is an I-beam. The clamping assembly includes a clamping plate and a pad. A mounting part is vertically mounted on the upper end of the clamping plate. The mounting part and the interior of the clamping plate form a positioning groove, the shape of which is the same as the I-beam. The clamping plate is fastened to one side of the I-beam via the positioning groove. The pad is positioned on the other side of the I-beam. The mounting part and the pad are clamped and fixed to the I-beam by bolt assemblies that pass through the slots. An installation groove is inclinedly formed on the bottom side of the clamping plate. The scraper is positioned in the installation groove. Several locking screws are threaded onto the side wall of the clamping plate, extending into the installation groove and pressing against the scraper.

9. The heavy-duty leveling device for wear-resistant floor construction according to claim 7, characterized in that: The mounting plate has two first hinge seats spaced apart on its top side. The frame has two rotating shafts spaced apart on its upper side, and the rotating shafts are rotatably disposed in the inner holes of the first hinge seats. The mounting plate has two arc-shaped guide blocks spaced apart on its bottom side. The guide blocks have arc-shaped guide grooves inside. The frame has two rollers spaced apart on its bottom side, and the rollers are slidably disposed in the guide grooves.

10. A leveling method using the heavy-duty leveling device for wear-resistant floor construction as described in any one of claims 3-9, characterized in that, The steps are as follows: S1, Equipment positioning and initial verification: Move the mobile device equipped with the leveling unit to the pressure testing platform; S2, No-load calibration and contact test: Control the flipping component to flip to a horizontal state, so that the scraper is close to the pressure test platform; start the lifting cylinder to drive the counterweight beam and scraper to descend until the bottom side of the scraper is in contact with the pressure test platform, and then switch to the spring airbag to independently support the counterweight beam and scraper for static pressure test. S3, Weight reduction value setting: Adjust the internal air pressure value P of the spring airbag by the external air source, record the actual pressure value F measured by the pressure test platform under the current air pressure, and calculate the weight reduction value △G under the current air pressure; △G=GF; Wherein, G is the total weight of the counterweight beam and the scraper; Adjust the internal air pressure P of the spring airbag to obtain multiple sets of corresponding weight reduction values ​​△G, and establish a mapping relationship between air pressure and weight reduction value; S4, transition in position: The control flipping component flips, causing the scraper to move away from the ground, thus achieving obstacle avoidance movement. The mobile device is then moved to the ground area to be leveled, which is the concrete pouring area and the ground after the initial leveling. S5, Preset Working Height: Control the flipping component to flip to a horizontal state, drive the lifting cylinder to make the counterweight beam and scraper descend, until the distance between the bottom of the scraper and the ground is controlled at a hovering height of 2mm-5mm; S6, adaptive leveling: Based on the mapping relationship between air pressure and weight reduction, determine the target air pressure P1 according to the weight required for leveling the current construction ground, and adjust the spring airbag to the target air pressure. Release the pressure holding state of the lifting cylinder, so that the counterweight beam and scraper can compress the spring air bag by their own weight. The air bag outputs a stable supporting upward pressure, which reduces the weight of the counterweight beam and scraper, and presses the bottom side of the scraper tightly onto the spread material of the wear-resistant ground surface. The mobile device is activated, which moves the scraper along a preset path to simultaneously compact and level the surface material.

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