Troweling machine for flattening macroporous concrete and construction method of troweling machine

Abstract

The invention belongs to the technical field of troweling machines, and discloses a troweling machine for leveling macroporous concrete and a construction method thereof, the troweling machine comprises a troweling machine main body, an annular support frame and a flexible troweling auxiliary assembly; the annular supporting frame is arranged at the bottom of the troweling machine. The flexible troweling auxiliary assembly is connected to the annular supporting frame in a sleeving mode and used for deforming along with accumulation of the macroporous concrete so as to control aggregate particles of the concrete to enter and exit from the annular area of the troweling machine and flatten the surface of the macroporous concrete. According to the troweling machine, direct contact between the troweling machine main body and coarse aggregate is effectively prevented through the flexible troweling auxiliary assembly, so that the problems of unstable leveling and irregular shaking caused by collision are avoided. Meanwhile, the flexible troweling auxiliary assembly can collect part of concrete as waste materials in the operation process, the stability is improved through the weight of the concrete, the other part of coarse aggregate can be effectively fused with the macroporous concrete in the moving process, the situation that a pouring area is not full is greatly relieved, and potholes are remarkably reduced.

Description

Technical Field

[0001] The invention discloses a trowel machine for leveling macroporous concrete and a construction method thereof, belonging to the technical field of trowel machines. Background Art

[0002] In areas with frequent geological activities, especially those with active faults, natural disasters such as earthquakes pose a huge threat to the safety of buildings and infrastructure. Traditional rigid lining structures often suffer serious damage during earthquakes due to the lack of effective energy absorption and dispersion mechanisms. Therefore, it is crucial to develop a new type of structure that can adapt to foundation deformation and effectively absorb seismic energy.

[0003] As a lightweight and porous special concrete material, large-pore concrete has good energy absorption and designability and is often used in new structures. However, after pouring large-pore concrete, leveling becomes a key step to ensure that the pouring area is at the same level. At present, hand-held trowels are mostly used for leveling. However, the irregular accumulation of coarse aggregates in large-pore concrete and the difference in adaptability between voids and coarse aggregates often cause the pouring area to be uneven. When using a hand-held trowel for leveling, the ejected coarse aggregates will contact and collide with the grinding disc at the bottom of the trowel, which not only easily leads to unstable center of gravity of the trowel, irregular shaking, and reduced leveling effect, but also fails to effectively integrate the ejected coarse aggregates into the concrete, thereby causing problems such as incomplete pouring area and increased potholes, further affecting the subsequent pouring quality of the middle control layer and rigid concrete and the stability of the overall structure. Summary of the invention

[0004] The purpose of this application is to provide a trowel machine for leveling large-pore concrete and a construction method thereof to solve the technical difficulties faced by hand-held trowel machines in the prior art when leveling: when the coarse aggregate in the concrete is ejected, the ejected coarse aggregate will contact and collide with the grinding disc at the bottom of the trowel machine, which not only easily leads to unstable center of gravity of the trowel machine, irregular shaking, and reduced leveling effect, but also fails to effectively integrate the ejected coarse aggregate into the concrete, thereby causing technical problems such as incomplete casting area and increased potholes. To achieve the above purpose, the present invention proposes a trowel machine for leveling large-pore concrete and a construction method thereof, and the specific scheme is as follows: First aspect: A trowel machine for leveling macroporous concrete, comprising: a trowel machine body, an annular support frame and a flexible trowel auxiliary component; The annular support frame is arranged at the bottom of the trowel machine; The flexible trowel auxiliary component is sleeved on the annular support frame and is used for deforming with the accumulation of large-pore concrete to control the aggregate particles of concrete to enter and exit the annular area of ​​the trowel machine and level the surface of the large-pore concrete.

[0005] Preferably, the flexible polishing auxiliary component comprises: an annular sleeve, an external sleeve and an auxiliary scraper; The annular sleeve is sleeved on the surface of the annular support frame; The external sleeve is fixed to the outer side of the annular sleeve and is used to deform with the accumulation of macroporous concrete to prevent the aggregate particles from entering the annular area; The auxiliary scraper is fixed on the bottom surface of the annular sleeve and is used for leveling concrete.

[0006] Preferably, the annular sleeve comprises an annular portion, a hook portion and a curved portion; The annular portion includes an annular tube surface and tube walls on both sides extending radially along the annular tube surface; The hook portion is arranged at the bottom of the annular portion and connected to the tube wall on the radial inner side of the annular portion, and is used to clamp the annular sleeve onto the annular support frame; The first side of the curved portion is connected to the radially outer tube wall of the annular portion, and the second side is in contact with the external sleeve. The curved surface of the curved portion deforms downward as the external sleeve deforms.

[0007] Preferably, a plurality of first through holes are correspondingly arranged on the tube walls on both sides; A plurality of observation grooves are arranged on the annular portion.

[0008] Preferably, the external sleeve includes an annular side tube and an external arc plate; The annular side tube includes an arc-shaped side plate and a connecting plate and an abutting arc plate extending radially along the arc-shaped side plate; The connecting plate and the contact arc plate are arranged on the top edge and the bottom edge of the arc-shaped side plate, and the side of the contact arc plate away from the arc-shaped side plate contacts and contacts the second side of the curved surface portion; One side of the external arc plate is connected to a side of the annular side tube away from the abutting arc plate, and is folded radially outward from the external tube sleeve.

[0009] Preferably, the annular side tube further comprises a plurality of connecting clamps; The plurality of connection card plates are fixed to the connection plate; The annular sleeve is provided with buckles matching the multiple engagement clamping plates, and the multiple engagement clamping plates are used to clamp the external sleeve onto the annular sleeve.

[0010] Preferably, a plurality of second through holes are provided on the circumscribed arc plate.

[0011] Preferably, the cross section of the auxiliary scraper is a groove-shaped structure opening downward.

[0012] Second aspect: A trowel construction method for leveling macroporous concrete comprises the following steps: Step 1, install the flexible trowel auxiliary component on the annular support frame of the trowel machine, drive the trowel machine, and make the flexible trowel auxiliary component contact the large-pore concrete surface; Step 2, move the trowel machine, use the compression deformation of the external arc plate to drive the curved surface of the annular sleeve to deform downward, block the aggregate particles from entering the annular area of ​​the trowel machine, and reset after the pressure is released to allow the aggregate particles to enter the bottom of the auxiliary scraper; Step 3: The auxiliary scraper collides with the macroporous concrete to knock the aggregate particles to scatter or level and fuse them into the macroporous concrete, thereby leveling the surface of the macroporous concrete.

[0013] Preferably, when leveling the macroporous concrete surface; The flexible trowel auxiliary component is also used to fill the pores or depressions on the surface of the macroporous concrete with the matching aggregate particles, while accumulating the non-matching aggregate particles around the trowel.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the present invention improves the stability and efficiency of the trowel machine in leveling large-pore concrete by providing a flexible trowel auxiliary component connected to the annular support frame. The flexible trowel auxiliary component can effectively prevent direct contact between the trowel machine body and the coarse aggregate, thereby avoiding the problem of unstable leveling and irregular jitter caused by collision. At the same time, the flexible trowel auxiliary component can also collect part of the concrete as waste during the operation process, and use its weight to increase stability, while the other part of the coarse aggregate can be effectively integrated with the large-pore concrete during the movement, greatly alleviating the situation of incomplete casting area and significantly reducing the occurrence of potholes. The present invention not only improves the quality of leveling operations, but also speeds up the progress of subsequent middle control layers and rigid concrete projects, bringing a more efficient and reliable solution to concrete construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the trowel machine in an embodiment of the present invention; Figure 2 It is a schematic cross-sectional structure diagram of a trowel machine in an embodiment of the present invention; Figure 3 It is a schematic diagram of the structure of a flexible polishing auxiliary component sleeved on an annular support frame in an embodiment of the present invention; Figure 4It is a schematic diagram of a cross-sectional three-dimensional structure of a flexible trowel auxiliary component of a trowel machine in an embodiment of the present invention; Figure 5 for Figure 4 A is a partial enlarged schematic diagram; Figure 6 It is a schematic diagram of the three-dimensional structure of the observation slot, the abutment arc plate and the discharge slot in the embodiment of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the first through hole, the hook portion and the auxiliary scraper in an embodiment of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the external sleeve; Fig. 9 for Figure 8 A partial enlarged schematic diagram of point B in the middle.

[0016] In the figure: 1. main body of the trowel; 2. annular support frame; 3. annular sleeve; 301. observation slot; 302. first through hole; 303. hook portion; 304. curved portion; 4. external sleeve; 401. abutting arc plate; 402. external arc plate; 403. second through hole; 404. connecting clamp; 5. auxiliary scraper; 501. discharge slot. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0018] See also Figure 1-3 As shown, the purpose of this embodiment is to provide a trowel machine for leveling large-pore concrete, including: a trowel machine body 1, an annular support frame 2 and a flexible trowel auxiliary component; the annular support frame 2 is arranged at the bottom of the trowel machine; the flexible trowel auxiliary component is sleeved on the annular support frame 2, and is used to deform with the accumulation of large-pore concrete, so as to control the aggregate particles of concrete to enter and exit the annular area of ​​the trowel machine and level the surface of the large-pore concrete.

[0019] Specifically, a trowel machine for leveling large-pore concrete is mainly composed of three parts: a trowel machine body 1, an annular support frame 2, and a flexible trowel auxiliary component. The trowel machine body 1 is the core of driving and control, responsible for providing power and controlling the movement of the whole machine. The annular support frame 2 is firmly set at the bottom of the trowel machine body 1, providing a stable installation foundation for the flexible trowel auxiliary component. The flexible trowel auxiliary component is the core of the present invention, which is sleeved on the annular support frame 2 and can flexibly deform with the accumulation of large-pore concrete, that is, it is used to adapt to the surface deformation of large-pore concrete, thereby controlling the aggregate particles to enter and exit the annular working area of ​​the trowel machine, and leveling the concrete surface. In this embodiment, the flexible trowel auxiliary component is made of plastic material. At the same time, the material of the component also has the possibility of being replaced by other materials such as rubber.

[0020] Furthermore, the flexible finishing auxiliary component includes: an annular sleeve 3, an external sleeve 4 and an auxiliary scraper 5; the annular sleeve 3 is sleeved on the surface of the annular support frame 2; the external sleeve 4 is fixed to the outer side of the annular sleeve 3, and is used to deform with the accumulation of large-pore concrete to prevent aggregate particles from entering the annular area; the auxiliary scraper 5 is fixed to the bottom surface of the annular sleeve 3, and is used to level the concrete.

[0021] Specifically, Figure 2-3 As shown, the flexible trowel auxiliary assembly mainly includes an annular sleeve 3, an external sleeve 4 and an auxiliary scraper 5. The three parts work together to achieve the leveling operation of the large-pore concrete surface. The bottom of the annular sleeve 3 is at the same height as the bottom of the trowel body 1, so it will not affect the normal leveling operation.

[0022] Furthermore, the annular sleeve 3 includes an annular portion, a hook portion 303 and a curved portion 304; the annular portion includes an annular tube surface and two side tube walls extending radially along the annular tube surface; the hook portion 303 is arranged at the bottom of the annular portion and is connected to the radially inner tube wall of the annular portion, and is used to clamp the annular tube sleeve on the annular support frame 2; the first side of the curved portion 304 is connected to the radially outer tube wall of the annular portion, and the second side is in contact with the external sleeve 4, and the curved surface of the curved portion 304 deforms downward with the deformation of the external sleeve 4.

[0023] Specifically, Figure 4-6As shown, the annular sleeve 3 is the basic part of the flexible trowel auxiliary component, and the annular sleeve 3 includes an annular portion, a hook portion 303 and a curved portion 304. The annular portion is composed of an annular tube surface and two side tube walls extending radially along the annular tube surface, and the interior is hollowed out. After being sleeved on the annular support frame 2, it has a certain hollow inner cavity. The annular portion provides stable support for the external sleeve 4 and the auxiliary scraper 5. The hook portion 303 is arranged at the bottom of the annular portion and is connected to the tube wall on the radial inner side of the annular portion. Specifically, the annular tube surface and the tube walls on both sides and the hook portion 303 cover the annular support frame 2, and the annular sleeve 3 is firmly sleeved on the annular support frame 2 by bending the hook portion 303. The hook portion 303 is placed at the bottom of the annular support frame 2, ensuring that the annular sleeve 3 can maintain a slight shaking during the operation process. This shaking helps to better adapt to and level the concrete surface, and at the same time, it will not fall off due to excessive shaking, thereby ensuring the operation efficiency while greatly improving the stability and reliability of the device. The curved portion 304 is connected between the radial outer tube wall of the annular portion and the external sleeve 4. The curved portion 304 can deform downward along with the deformation of the external sleeve 4, thereby effectively blocking the aggregate particles. The bending part of the curved portion 304 is a weakened portion that is easy to deform. When the annular sleeve 3 is subjected to external force, it can more easily deform in this area, thereby being able to more effectively fit and remove obstacles on the concrete surface, thereby sweeping away coarse aggregate particles at different heights.

[0024] Further, such as Figure 7 As shown, a plurality of first through holes 302 are correspondingly arranged on the tube walls on both sides; and a plurality of observation grooves 301 are arranged on the annular portion.

[0025] Specifically, during the leveling operation, the device utilizes the design of the observation slot 301 and the first through hole 302, so that the adapted coarse aggregate can be effectively collected and stored in the inner cavity of the annular sleeve 3. This collection process not only increases the weight of the annular sleeve 3, but also improves its stability and compaction effect during the leveling operation, especially the compaction ability of large-pore concrete is significantly enhanced.

[0026] Further, such as Figure 8-9 As shown, the external sleeve 4 includes an annular side tube and an external arc plate 402; the annular side tube includes an arc-shaped side plate and a connecting plate and a contact arc plate 401 extending radially along the arc-shaped side plate; the connecting plate and the contact arc plate 401 are relatively arranged at the top edge and the bottom edge of the arc-shaped side plate, and the side of the contact arc plate 401 away from the arc-shaped side plate is in contact with the second side of the curved surface portion 304; one side of the external arc plate 402 is connected to a side of the annular side tube away from the contact arc plate 401, and is folded radially outward of the external tube sleeve.

[0027] Specifically, the external sleeve 4 is fixed on the outer side of the annular sleeve 3. The external sleeve 4 includes two parts: an annular side tube and an external arc plate 402. The annular side tube is composed of an arc-shaped side plate, a connecting plate and an abutting arc plate 401, which together constitute the main structure of the external sleeve 4. The connecting plate and the abutting arc plate 401 are relatively arranged at the top edge and the bottom edge of the arc-shaped side plate, and the side of the abutting arc plate 401 away from the arc-shaped side plate is connected to the second side of the curved surface 304, thereby achieving a stable connection with the annular sleeve 3. The external arc plate 402 is connected to the side of the annular side tube away from the abutting arc plate 401, and is folded radially outward from the external sleeve 4, thereby reducing the friction in contact with the coarse aggregate particles and improving the comfort of using the trowel.

[0028] In order to better fix the connection between the external sleeve 4 and the annular sleeve 3, a plurality of connecting clamps 404 are also provided on the annular side tube, which are fixed on the connecting plates and match the buckles on the annular sleeve 3 to achieve the clamping fixation of the external sleeve 4. In addition, a plurality of second through holes 403 are also provided on the external arc plate 402, which are used to discharge the macroporous concrete entering the folded external arc plate 402 during operation to avoid blockage on the inner side of the folded external arc plate 402.

[0029] Furthermore, the annular side tube also includes multiple connecting clamps 404; the multiple connecting clamps 404 are fixed on the connecting plates; the annular sleeve 3 is provided with buckles matching the multiple connecting clamps 404, and the multiple connecting clamps 404 are used to clamp the external sleeve 4 on the annular sleeve 3.

[0030] Specifically, in order to better fix the connection between the external sleeve 4 and the annular sleeve 3, a plurality of connecting clamps 404 are also provided on the annular side tube. They are fixed on the connecting plates and match with the buckles on the annular sleeve 3, thereby realizing the clamping fixation of the external sleeve 4.

[0031] In addition, a plurality of second through holes 403 are provided on the external arc plate 402 to prevent coarse aggregate particles from entering the annular area of ​​the trowel. Together with the curved surface 304, the leveling quality and progress are effectively improved, and the work intensity of the operators who repeatedly perform leveling is reduced.

[0032] Furthermore, the cross section of the auxiliary scraper 5 is a groove-shaped structure with an opening facing downward, and a discharge groove 501 is provided on the auxiliary scraper 5 .

[0033] Specifically, the auxiliary scraper 5 is firmly mounted at the bottom of the annular sleeve 3, and it plays a vital role in the trowel operation. Its cross-section is designed as a trough-shaped structure with the opening facing downward. This design ensures that the auxiliary scraper 5 can fit closely to the concrete surface and effectively hit and level the aggregate particles. In actual operation, the concrete starts from the external sleeve 4, passes through the annular sleeve 3 in sequence, and finally when it contacts the auxiliary scraper 5, most of the coarse aggregate particles have been effectively blocked out. At this time, the main function of the auxiliary scraper 5 is transformed into assisting in leveling the concrete surface. It is worth mentioning that the auxiliary scraper 5 is designed as a trough-shaped hollow lightweight structure, which allows it to produce a certain amount of shaking during operation. This shaking will not only not have a negative impact on the leveling effect, but can help control the height of the concrete and keep it within the ideal range, thereby ensuring that the trowel machine body 1 can achieve the best leveling effect. Example

[0034] A trowel construction method for leveling macroporous concrete comprises the following steps: Step 1, installing the flexible trowel auxiliary component on the annular support frame 2 of the trowel machine, and driving the trowel machine to make the flexible trowel auxiliary component contact the macroporous concrete surface; Step 2, move the trowel, and use the compression deformation of the external arc plate 402 to drive the curved surface 304 of the annular sleeve 3 to deform downward, thereby blocking the aggregate particles from entering the annular area of ​​the trowel, and reset after the pressure is released to allow the aggregate particles to enter the bottom of the auxiliary scraper 5; Step 3: The auxiliary scraper 5 collides with the macroporous concrete to knock the aggregate particles to scatter or level and fuse them into the macroporous concrete, thereby leveling the surface of the macroporous concrete.

[0035] Furthermore, when leveling the macroporous concrete surface, the flexible trowel auxiliary component is also used to fill the compatible aggregate particles into the pores or depressions on the macroporous concrete surface, and simultaneously accumulate the non-compatible aggregate particles around the trowel.

[0036] Specifically, in this embodiment, the trowel machine is used in the macroporous concrete leveling operation of flexible partition energy absorption across active faults, which specifically includes: Based on geological survey reports and historical earthquake activity data, the maximum possible displacement of active faults is estimated.

[0037] According to the estimated displacement and the use requirements of the project, a multi-layer flexible composite lining structure is selected. The structure includes a concrete outer protective layer, a flexible connection section, a soft cushion layer, a steel pipe lining and a directly buried corrugated pipe expansion joint.

[0038] Through calculation and analysis, the appropriate thickness and elastic modulus of the cushion layer are determined to optimize the internal force response and fracture resistance of the tunnel structure.

[0039] Ensure that the project base surface is flat and free of debris to meet construction requirements. Prepare large-pore concrete materials (cement, coarse aggregate, water) and other required materials such as corrugated steel pipes, rubber cushions, PVC waterproof boards, geomembranes, etc.

[0040] Check the integrity of the trowel machine body 1, the annular support frame 2 and the flexible trowel auxiliary assembly to ensure that all components are firmly connected and operate normally.

[0041] Use a forced mixer to mix according to the mix ratio provided by the laboratory to ensure that the cement slurry can be evenly coated on the aggregate, and transport the mixed large-pore concrete to the construction surface.

[0042] Spread the concrete in sections along the project axis, and put the flexible finishing auxiliary component on the annular support frame of the finishing machine to ensure that the component is in full contact with the concrete surface. Drive the finishing machine and move it to the concrete surface for finishing.

[0043] The specific working principle of the trowel is as follows: when the trowel moves on the concrete, the external arc plate 402 will first contact the concrete. If the concrete is piled up, the external arc plate 402 will be deformed due to the pressure, driving the entire external sleeve 4 to move inward. This deformation will further affect the annular sleeve 3, causing the height of its curved surface 304 to drop, thereby blocking the entry of aggregate particles. When the external arc plate 402 is no longer squeezed, the curved surface 304 of the clamping sleeve will be reset, and the aggregate particles can enter the bottom of the auxiliary scraper 5. The auxiliary scraper 5 will collide with the concrete. If the height of the aggregate particles is greater than the distance between the scraper and the concrete, it will be hit and scattered around; if the height is less than this distance, it will be flattened and integrated into the concrete. When leveling the surface of large-pore concrete, when the external arc plate 402 no longer contacts the accumulated concrete, it means that the work progress is in the middle and late stages. At this time, the external arc plate 402 may be slightly deformed due to the small amount of accumulated concrete, but the impact will be weakened. Larger aggregate particles can smoothly enter the bottom of the auxiliary scraper 5 and serve as filler if they fit, or continue to accumulate around if they do not fit.

[0044] After leveling, compaction equipment is used to compact the concrete to ensure its density. Circumferential flexible hinges are arranged at different intervals in the fault fracture zone and the affected zone. Corrugated steel pipes are installed and connected to the segment lining through prestressed steel bars, and a rubber cushion is set between the corrugated steel pipe and the lining to absorb displacement deformation.

[0045] PVC waterproof board, geomembrane and back-sticked waterstop are installed on the outer protective layer of concrete to ensure the waterproof performance of the project.

[0046] After construction, the macroporous concrete should be properly maintained, including moisture retention and temperature control, to ensure its performance.

[0047] During the operation of the project, the construction site will be continuously monitored, including fault activity monitoring and tunnel structure deformation monitoring, to evaluate the impact of fault activity on the project progress and tunnel structure safety.

[0048] Regularly assess the structural integrity and functionality of the project, including the stability and waterproof performance of the tunnel lining structure.

[0049] According to the evaluation results, necessary maintenance and repair work is carried out, such as replacing damaged flexible connectors, replenishing waterproof materials, repairing concrete surface cracks, etc., to maintain the safety and stability of the project.

[0050] Through the above comprehensive implementation process, the safety and stability of the lining structure of the tunnel project in the active fault zone can be ensured, while the construction efficiency and quality can be improved.

[0051] In the above scheme, a flexible trowel auxiliary component is introduced to optimize the leveling process of large-pore concrete. After the pouring is completed, the trowel main body 1 needs to be used for leveling. Before the operation, the flexible trowel auxiliary component will be clamped on the annular support frame. During the operation, once it contacts the accumulated large-pore concrete, the flexible trowel auxiliary component can effectively block the large volume of coarse aggregate and prevent it from directly contacting the bottom of the trowel main body 1, thereby preventing the unstable leveling caused by direct contact with the coarse aggregate. The weight of the concrete will cause the flexible trowel auxiliary component to deform to a certain extent, and this deformation further reduces the volume range of the coarse aggregate. When it is no longer in contact with the accumulated concrete, the flexible trowel auxiliary component returns to its original state and can accept a wider range of coarse aggregate volume. At this time, part of the concrete will accumulate in the flexible trowel auxiliary component, which will serve as waste and increase its weight, while the other part of the coarse aggregate will merge with the large-pore concrete during the movement, reducing the incomplete phenomenon and potholes in the pouring area, thereby improving the engineering progress and quality of the subsequent middle control layer and rigid concrete.

[0052] Through the annular portion, hook portion 303 and curved portion 304 of the annular sleeve 3. By opening the hook portion 303 and clamping it on the outer surface of the annular support frame, the inner cavity of the annular sleeve 3 can tightly wrap the annular support frame. The weakened portion of the curved portion 304 on the side of the annular sleeve 3 is consistent with the bottom height of the trowel body 1, and preliminary leveling can be performed first. At the same time, the deformation characteristics of the weakened portion allow irregular concrete of a certain height to enter the bottom of the trowel body 1 for final leveling, thereby improving work efficiency and reducing repetitive leveling work.

[0053] In addition, the design of the external sleeve 4, the contact arc plate 401 and the external arc plate 402 is also crucial. The external sleeve 4 is located at the outermost side of the trowel body 1, so the large-pore concrete will first contact the surface of the external sleeve 4, that is, the external arc plate 402. The outward bending design of the external arc plate 402 effectively reduces the friction with the large-pore concrete, making the operation easier. When it contacts the accumulated concrete, the external arc plate 402 will also deform, and the extrusion force pushes the contact arc plate 401 to deform toward the curved surface 304 of the annular sleeve 3. The contact arc plate 401 conflicts with the curved surface 304 and is mainly used to guide the deformation of the curved surface 304 through its deformation. The combination of this deformation and the weakened part makes the curved surface 304 of the clamping sleeve tighten, and the bottom of the curved weakened part fits the large-pore concrete more closely, which helps to achieve rapid leveling in the early stage of the operation and speeds up the work progress.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A trowel machine for leveling macroporous concrete, characterized in that: include: Trowel machine body, annular support frame and flexible trowel auxiliary components; The annular support frame is arranged at the bottom of the trowel machine; The flexible trowel auxiliary component is sleeved on the annular support frame and is used for deforming with the accumulation of large-pore concrete to control the aggregate particles of the concrete to enter and exit the annular area of ​​the trowel machine and level the surface of the large-pore concrete.

2. The trowel machine according to claim 1, characterized in that: The flexible polishing auxiliary component comprises: an annular sleeve, an external sleeve and an auxiliary scraper; The annular sleeve is sleeved on the surface of the annular support frame; The external sleeve is fixed to the outer side of the annular sleeve and is used to deform with the accumulation of macroporous concrete to prevent the aggregate particles from entering the annular area; The auxiliary scraper is fixed on the bottom surface of the annular sleeve and is used for leveling concrete.

3. The trowel machine according to claim 2, characterized in that: The annular sleeve comprises an annular portion, a hook portion and a curved portion; The annular portion includes an annular tube surface and tube walls on both sides extending radially along the annular tube surface; The hook portion is arranged at the bottom of the annular portion and connected to the tube wall on the radial inner side of the annular portion, and is used to clamp the annular sleeve onto the annular support frame; The first side of the curved portion is connected to the radially outer tube wall of the annular portion, and the second side is in contact with the external sleeve. The curved surface of the curved portion deforms downward as the external sleeve deforms.

4. The trowel machine according to claim 3, characterized in that: A plurality of first through holes are correspondingly arranged on the tube walls on both sides; A plurality of observation grooves are arranged on the annular portion.

5. The trowel machine according to claim 3, characterized in that: The external sleeve includes an annular side tube and an external arc plate; The annular side tube includes an arc-shaped side plate and a connecting plate and an abutting arc plate extending radially along the arc-shaped side plate; The connecting plate and the contact arc plate are arranged on the top edge and the bottom edge of the arc-shaped side plate, and the side of the contact arc plate away from the arc-shaped side plate contacts and contacts the second side of the curved surface portion; One side of the external arc plate is connected to a side of the annular side tube away from the abutting arc plate, and is folded radially outward from the external tube sleeve.

6. The trowel machine according to claim 5, characterized in that: The annular side tube also includes a plurality of connecting clamps; The plurality of connection card plates are fixed to the connection plate; The annular sleeve is provided with buckles matching the multiple engagement clamping plates, and the multiple engagement clamping plates are used to clamp the external sleeve onto the annular sleeve.

7. The trowel machine according to claim 5, characterized in that: The circumscribed arc plate is provided with a plurality of second through holes.

8. The trowel machine according to claim 2, characterized in that: The cross section of the auxiliary scraper is a groove-shaped structure with an opening facing downward.

9. A trowel construction method for leveling macroporous concrete, characterized in that: The following steps are involved: Step 1, install the flexible trowel auxiliary component on the annular support frame of the trowel machine, drive the trowel machine, and make the flexible trowel auxiliary component contact the large-pore concrete surface; Step 2, move the trowel machine, use the compression deformation of the external arc plate to drive the curved surface of the annular sleeve to deform downward, block the aggregate particles from entering the annular area of ​​the trowel machine, and reset after the pressure is released to allow the aggregate particles to enter the bottom of the auxiliary scraper; Step 3: The auxiliary scraper collides with the macroporous concrete to knock the aggregate particles to scatter or level and fuse them into the macroporous concrete, thereby leveling the surface of the macroporous concrete.

10. The trowel construction method according to claim 9, characterized in that: When leveling the surface of the macroporous concrete; The flexible trowel auxiliary component is also used to fill the pores or depressions on the surface of the macroporous concrete with the matching aggregate particles, while accumulating the non-matching aggregate particles around the trowel.

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