A construction device and construction method for anti-settlement well covers

Abstract

An anti-settlement manhole cover support construction device and construction method, belonging to the technical field of formwork support construction, including a road main body. A manhole cover system is arranged in the road main body, and a support unit for preventing the settlement of the manhole cover system is arranged below the manhole cover system. There are four groups of support units, and the four groups of support units are arranged at equal intervals along the circumferential direction of the manhole cover system. The present invention shows many beneficial effects in the aspect of manhole cover anti-settlement support: First, aiming at the problem that the manhole cover is prone to settlement due to repeated vehicle rolling and loosening of the soil around the well during long-term use, by setting the first support rod and the second support rod, a stable supporting force is provided for the cover plate, effectively resisting these factors, avoiding settlement and loosening, maintaining the smoothness of the road, ensuring the safe and smooth passage of vehicles and pedestrians, meeting the requirements of stable use of the manhole cover and being flush with the road, and the four groups of support units are evenly distributed along the circumferential direction of the manhole cover seat, and the constructed support system can provide equal support in all directions, resist external forces, and avoid sunken settlement.

Description

Technical Field

[0001] The invention belongs to the technical field of formwork support construction, and particularly relates to an anti-settlement manhole cover support construction device and a construction method. Background Art

[0002] A manhole cover usually consists of a cover plate, a manhole cover seat, a locking device, etc. The cover plate is used to cover the wellhead, the manhole cover seat supports and fixes the cover plate, and the locking device can lock the cover plate to prevent theft; the manhole cover can cover the wellhead, prevent people or objects from falling, protect underground pipelines and equipment, bear the loads of vehicles and pedestrians, and ensure traffic safety.

[0003] In the related art (publication number: CN218813890U), an integrated manhole cover lifting and support construction device is disclosed, which includes a steel formwork fixed support and a steel support; four arc-shaped steel formworks are connected into a circular cylinder; a support is connected in the middle of each of the four arc-shaped steel formworks, and the support is connected to the support steel through a pin shaft; the support consists of a cross plate and two vertical plates, and the two vertical plates are respectively vertically connected to both ends of the cross plate; the support steel consists of a concave steel support and a convex steel support, and the concave steel support is mortise-connected with the convex steel support. It can be rotated arbitrarily up and down, the construction is simple, the degree of factory processing is high, the on-site formwork support and form removal are fast, and the safety and practical effects are achieved.

[0004] Manhole covers are widely present in urban infrastructure, but during long-term use, due to factors such as repeated vehicle rolling and loosening of the soil around the well, settlement is extremely likely to occur. When the manhole cover settles, a depression will form between it and the ground, and the depth of the depression varies. This not only affects the flatness and aesthetics of urban roads, but also causes bumps when vehicles pass by, reducing the driving experience, posing a safety hazard, and easily leading to traffic accidents. Summary of the Invention

[0005] Aiming at the problems existing in the prior art that during long-term use, due to factors such as repeated vehicle rolling and loosening of the soil around the well, settlement is extremely likely to occur. When the manhole cover settles, a depression will form between it and the ground, and the depth of the depression varies. This not only affects the flatness and aesthetics of urban roads, but also causes bumps when vehicles pass by, reducing the driving experience, posing a safety hazard, and easily leading to traffic accidents, the invention provides an anti-settlement manhole cover support construction device and a construction method. By setting the first support rod and the second support rod to support the manhole cover system, a more stable supporting force is provided for the cover plate, effectively resisting factors such as repeated vehicle rolling and loosening of the soil around the well, avoiding the depression and settlement of the cover plate, maintaining the flatness of the road, ensuring the safe and smooth passage of vehicles and pedestrians, and meeting the requirements of stable use of the manhole cover and being flush and integrated with the road. The specific technical solutions are as follows:

[0006] An anti-settlement manhole cover support construction device, including a road main body, a manhole cover system is arranged in the road main body, a support unit for preventing the settlement of the manhole cover system is arranged below the manhole cover system, there are four groups of the support units, and the four groups of the support units are arranged at equal intervals along the circumferential direction of the manhole cover system;

[0007] Each group of the support units includes a connecting seat, one end of a first support rod is rotatably connected in the connecting seat, a sleeve seat is fixedly sleeved and installed at the other end of the first support rod, a second support rod is slidably embedded in the sleeve seat, the second support rod is arranged parallel to the first support rod, a first positioning pin is threadedly penetrated through the sleeve seat, and the free end of the first positioning pin extends into the inner cavity of the sleeve seat and abuts against the side wall of the second support rod;

[0008] Each group of the support units further includes a first rotating shaft penetrating and installed at the bottom end of the second support rod, a support foot is rotatably connected to the outside of the first rotating shaft, the support foot is U-shaped, a plurality of positioning holes are formed in the support foot along its width direction, a second positioning pin is penetrated through the first rotating shaft, and the free end of the second positioning pin is inserted into one of the positioning holes;

[0009] A support unit is arranged below the manhole cover system;

[0010] The support unit includes a seat body, a ring body is installed in the seat body, the ring body is concentric with the seat body, a circular turntable is rotatably arranged in the middle of the seat body, a first sliding groove, a second sliding groove and a U-shaped groove are respectively formed on the circular turntable, the first sliding groove is located outside the second sliding groove, and both the first sliding groove and the second sliding groove are concentric with the circular turntable, and the second sliding groove, the U-shaped groove and the first sliding groove form a smoothly connected inner and outer sliding groove channel;

[0011] Wherein, the U-shaped groove is U-shaped, and the U-shaped opening of the U-shaped groove is arranged in a direction away from the center of the circular turntable;

[0012] The support unit further includes four groups of supporting components, and the four groups of supporting components are arranged at equal intervals along the circumferential direction on the side wall of the seat body;

[0013] Each group of the supporting components comprises a moving arm that vertically and slidably penetrates the seat body and the side wall of the ring body, the moving arm is provided with a moving block at one end located in the inner cavity of the seat body, a moving pin is vertically provided at the bottom end of the moving block, the moving pin is slidably embedded in the inner cavity of the slide channel formed by the second slide groove, the U-shaped groove and the first slide groove, and the first arc plate is provided at one end of the moving arm extending out of the side wall of the seat body, an arc-shaped supporting platform is provided on the side of the first arc plate facing away from the moving arm, and a second arc plate is provided on the arc-shaped supporting platform, a first spring is sleeved on the moving arm, and two ends of the first spring are respectively connected to the moving block and the side wall of the ring body;

[0014] Wherein, the side walls of the first arc-shaped plate, the arc-shaped supporting platform and the second arc-shaped plate are all arranged in an arc shape, and the arcs of the side walls of the three are arranged in concentric arcs;

[0015] The four groups of supporting components are respectively provided with inner supporting components which can be detachably provided;

[0016] Each group of the inner support components includes a support template, the bottom end of the support template is provided with an arc-shaped slot, the arc-shaped slot is sleeved on the second arc-shaped plate from top to bottom, and the outer side wall of the support template is arranged correspondingly with the outer side wall of the arc-shaped supporting platform;

[0017] Wherein, the left and right side walls of each supporting formwork are inclined from the inner arc to the outer arc direction to form an intersecting edge, and the arc length of the inner arc of the supporting formwork is smaller than the arc length of the outer arc.

[0018] In the above technical solution, the circular turntable is intermittently rotated and locked after rotation by a power unit;

[0019] The power unit includes a first rotating rod that is rotatable and vertically connected to the middle part of the upper surface of the circular turntable, the top end of the first rotating rod extends out of the upper surface of the seat body and is fixedly installed with a rotating disk, and the side walls of the rotating disk are respectively provided with a plurality of strip grooves and recessed parts, the number of the strip grooves and the recessed parts is the same, and the strip grooves are arranged between two adjacent recessed parts, the upper surface of the seat body is rotatable and vertically connected to a second rotating rod, a limit plate and a shift rod are fixedly installed on the second rotating rod, the side wall of the limit plate is rotatably engaged with one of the side walls of the recessed parts, the shift rod is arranged below the limit plate, and a shift pin is vertically installed on the end of the shift rod facing away from the second rotating rod, and the shift pin is rotatably embedded in one of the inner cavities of the strip grooves;

[0020] Wherein, a pointer is installed at the top end of the first rotating rod, and the pointer is arranged colinearly with the central axis of one of the moving arms.

[0021] In the above technical solution, the power unit also includes a remote operation component;

[0022] The distal operation component includes a support arm vertically and fixedly installed on the upper surface of the seat body. A plurality of first extension seats are arranged on the left side wall of the support arm. The second rotating rod penetrates through the outer wall of the first extension seat in the vertical direction, and the second rotating rod is rotatably connected to the first extension seat. A first insertion hole is formed on the upper surface of the first extension seat at the top. The top end of the second rotating rod extends out of the first extension seat and is provided with a handwheel. A convex block is installed on the side wall of the handwheel. The convex block is provided with a first insertion rod penetrating in the vertical direction, and the bottom end of the first insertion rod is insertably embedded in the inner cavity of the first insertion hole.

[0023] In the above technical solution, a braking unit is arranged above the seat body. The braking unit includes a plurality of limiting components, and each group of the limiting components is correspondingly arranged with each of the moving arms.

[0024] Each group of the limiting components includes a second insertion hole formed on the moving arm, and further includes a second insertion rod slidably penetrating through the upper surface of the seat body in the vertical direction. The bottom end of the second insertion rod is insertably embedded in the inner cavity of the second insertion hole. A top block is vertically installed at the top end of the second insertion rod. A second spring is sleeved on the second insertion rod, and two ends of the second spring are respectively connected to the upper surface of the seat body and the lower surface of the top block.

[0025] In the above technical solution, the braking unit further includes a brake release component.

[0026] The brake release component includes a rotating ring rotatably arranged on the upper surface of the seat body. The rotating ring and the seat body are concentrically arranged. A plurality of driving blocks are circumferentially and equidistantly arranged on the upper surface of the rotating ring. An inclined end face is arranged on the upper surface of each driving block. A roller is rotatably arranged on the lower surface of the top block. The inclined end face and the roller are correspondingly arranged. By the clockwise rotation of the rotating ring, the driving blocks and the inclined end face, the upward movement of the roller is driven.

[0027] The brake release assembly also includes a plurality of arc grooves equidistantly arranged on the swivel ring along the circumferential direction, the inner side wall of each arc groove is set to an arc shape, and the arc of the inner side wall of the arc groove and the arc of the side wall of the swivel ring are set to be concentric arcs, a plurality of fixing pins are equidistantly installed on the upper surface of the seat body along the circumferential direction, the fixing pins are the same in number as the arc grooves, and the fixing pins are slidably embedded in the inner cavity of the arc groove, the inner side wall of the swivel ring is installed with a gear ring, the upper surface of the seat body is vertically and rotatably provided with a second rotating shaft, the bottom end of the second rotating shaft is fixedly installed with a gear, the gear is meshed with the side wall of the gear ring, the upper surface of the seat body is fixedly and vertically installed with a fixing column, the top end of the fixing column is vertically installed with a second extension seat, the second rotating shaft rotates through the second extension seat, the outer wall of the second rotating shaft is provided with a coil spring, and the two ends of the coil spring are respectively connected with the second rotating shaft and the second extension seat;

[0028] Wherein, a handle is installed at the top end of the second rotating shaft.

[0029] In the above technical solution, the main body of the road includes a roadbed, a support platform and a well hole, the support platform is lower than the roadbed, and the well hole is a cylindrical hole;

[0030] The manhole cover system comprises a manhole cover seat, a cover plate is rotatably buckled on the manhole cover seat, a first concave edge and a second concave edge are arranged on the inner side of the manhole cover seat, the upper surfaces of the manhole cover seat, the first concave edge and the second concave edge are arranged in steps with a downward trend, a plurality of mounting seats are equidistantly arranged on the inner side wall of the manhole cover seat along the circumferential direction, a mounting block is embedded in the mounting seat, a frame is installed on the mounting block, and the center of the frame is arranged concentrically with the center of the manhole cover seat;

[0031] The manhole cover system and the support unit are connected via a hanging assembly, and the hanging assembly includes a plurality of groups of hanging assemblies;

[0032] Each group of the hanging components includes a vertical arm, which is fixed and vertically installed on the upper surface of the base body. A U-shaped frame is installed at the top end of the vertical arm. The U-shaped frame is arranged in a U shape. A third positioning pin is penetrated and rotatably arranged at one end of the U-shaped frame away from the vertical arm. A threaded hole adapted for the third positioning pin is opened on the mounting base, and the bottom end of the third positioning pin is threadedly embedded in the threaded hole on the mounting base.

[0033] The present invention also provides a construction method of an anti-sinking manhole cover support construction device, comprising the following steps:

[0034] Step 1: Slotting:

[0035] Align with the position above the well hole, and use earthwork machinery to excavate the roadbed so that the roadbed forms a flared shape above the well hole, and the diameter of the flared shape is larger than the diameter of the well hole. The bottom end of the flare forms a support platform with the top end of the well hole;

[0036] Step 2: Anti-settlement support:

[0037] Adjust the support unit to the support height suitable for the support manhole cover seat, and make the support feet fit the upper surface of the support platform to form a stable support environment for the cover in the vertical direction;

[0038] Step 3: Inner support:

[0039] Use the hanging component to connect the seat body to the well hole, adjust the braking unit to adjust all the second insertion rods to disengage from the inner cavity of the corresponding second jack, that is, adjust to the state where the moving arm is not limited by the second insertion rod, and use the power unit to promote the four groups of first arc plates, arc support platforms, and the second arc plates to extend outward one by one and in sequence, and promote the four groups of support templates to resist the inner wall of the well hole outward one by one and in sequence to achieve the circumferential horizontal support of the inner wall of the well hole;

[0040] Step 4: Removal:

[0041] After reaching the support period, open the cover and remove the support construction device upward from the manhole cover seat to realize the recycling of the device.

[0042] A kind of anti-settlement manhole cover support construction device and construction method of the present invention, compared with the prior art, the beneficial effects are:

[0043] First, for the problem that the manhole cover is prone to settlement during long-term use due to factors such as repeated vehicle rolling and loosening of the soil around the well. When the manhole cover settles, a depression will form between it and the ground, and the depth of the depression varies. This not only affects the flatness and beauty of the urban road, but also causes bumps when the vehicle passes by, reducing the driving experience, and there are potential safety hazards and it is easy to cause traffic accidents. The present invention provides support for the manhole cover system by setting the first support rod and the second support rod, provides a more stable support force for the cover, effectively resists factors such as repeated vehicle rolling and loosening of the soil around the well, avoids depression settlement and loosening of the cover, maintains the road flatness, and ensures the safe and smooth passage of vehicles and pedestrians, meeting the requirements of stable use of the manhole cover and being flush with the road;

[0044] Second, the present invention has the characteristic of flexibly adjusting the total length of the first support rod and the second support rod, and can accurately control the support height of the manhole cover system within a reasonable range to ensure that the position of the manhole cover system fits the roadbeds of different heights, realizing their flush installation. This not only ensures the stable support of the manhole cover system, effectively prevents settlement and loosening, but also can flexibly adapt to various high and low roadbeds, meeting the actual needs of always maintaining a flush consistency;

[0045] III. By providing the second support rod, the first rotating shaft, and the support feet, the support feet can be in close contact with the upper surface of the support platform and form a butt joint, effectively preventing the pointed bottom end of the second support rod from directly piercing into the support platform. By using the end face of the bottom of the support feet to make surface contact with the upper surface of the support platform, a stable and reliable support structure is provided for the second support rod and the first support rod, enhancing the stability of the support for the manhole cover system;

[0046] IV. The present invention is equipped with positioning holes, second positioning pins, and the first rotating shaft assembly, which can flexibly adjust and lock the inclination angle of the support feet relative to the second support rod. Whether facing the inclined or horizontal state of the upper surface of the support platform, the inclination or levelness of the lower surface of the support feet can be accurately adjusted through these components to ensure that the lower surface of the support feet is always in close contact with the upper surface of the support platform, establishing a stable and fitting support relationship;

[0047] V. The present invention evenly distributes four groups of support units along the circumference of the manhole cover seat, constructing a support system with equal support capabilities at all angles around the manhole cover seat. This system can provide support for the manhole cover seat in all directions without dead angles, ensuring that the support force received by the manhole cover seat is the same in all directions, effectively resisting external forces from all directions, preventing it from sagging and settling downward due to external forces, and always maintaining the support state where the manhole cover seat is flush with the upper surface of the roadbed;

[0048] VI. The present invention is provided with a hanging component, which can stably connect the support unit to the manhole cover system. And through the setting of the U-shaped frame, it can prevent the installation of the hanging component from interfering with the frame body, effectively avoiding the interference problem of the hanging component on the frame body during the installation process. It not only meets the functional requirements of the hanging component to realize the connection and assembly of the support unit and the manhole cover system, but also ensures that the frame body can be installed normally without obstruction, guaranteeing the integrity of the overall system and the smooth assembly process;

[0049] VII. By providing a circular turntable, a first chute, a second chute, and a U-shaped groove, the present invention can prompt each group of moving pins to move along the inner cavity of the first chute or the second chute, so as to adjust the positions of the first arc-shaped plate, the arc-shaped supporting table, and the second arc-shaped plate, and prompt the first arc-shaped plate, the arc-shaped supporting table, and the second arc-shaped plate to move towards or away from the center of the seat body. Eventually, the four groups of support templates can be retracted inward for disassembly or extended outward for support. Retracting inward can achieve the disassembly of the support templates, so as to be reused subsequently, saving resources and reducing the use cost. When the four groups of support templates extend outward, they form an annular support mold that closely fits the inner wall of the wellbore, providing an all-round inner support for the inner wall of the wellbore, effectively preventing the materials on the inner wall of the wellbore from falling naturally during construction, avoiding construction interruption or quality problems caused by material falling, and at the same time enabling the wellbore to form a wellbore structure with a sufficiently smooth and stable inner wall during construction. The stable inner wall can reduce the repair and adjustment work during construction, and the smooth inner wall helps with subsequent pipeline installation or other operations, avoiding the friction and resistance that may be brought by a rough inner wall, thus ensuring the construction quality and the smoothness of the construction process, providing a more reliable guarantee for the entire wellbore construction project, and improving the quality and stability of the overall project;

[0050] VIII. The present invention provides a U-shaped groove, which is used to construct the first chute and the second chute into a mutually connected chute channel. At the same time, combined with the first spring component, it can enable the moving pin to automatically move and transform in the inner cavity of the first chute or the second chute. Furthermore, the first arc-shaped plate, the arc-shaped supporting table, and the second arc-shaped plate can smoothly move towards or away from the center of the seat body. In addition, the movement operation of the above-mentioned moving pin in the inner cavity of the first chute or the second chute can be automatically completed only by the circumferential rotation of the circular turntable, without manual adjustment; that is, through the rotation of the circular turntable, the present invention can achieve the displacement operation of the four groups of support templates one by one and successively. Specifically, by driving the rotation of the circular turntable, the operation process of the four groups of support templates moving outward one by one in sequence for inner support or moving inward for disassembly and separation can be easily achieved, greatly simplifying the operation process, bringing great convenience to the anti-settlement support operation process of the manhole cover, and the automated operation significantly improves the work efficiency, reduces the labor input, reduces the labor cost, avoids the errors and inconsistencies that may be brought by manual operation, and ensures the accuracy and stability of the operation. In addition, this operation method makes the support or disassembly operation of the support template extremely simple, shortens the construction period, and improves the project progress;

[0051] IX. The present invention utilizes a unified driving power source, a circular turntable, which can orderly drive four groups of support templates to perform displacement operations one by one and in sequence. Compared with the traditional method of separately equipping each support template with a driving system, it has significant advantages: First of all, using a unified driving power circular turntable can greatly save power energy, reduce power costs, and save a large amount of resources during long-term use. At the same time, this method ensures that the equipment has a high degree of coordination when functioning, and each component can cooperate and operate coordinately to form an organic whole, enhancing the stability and reliability of the entire system. In addition, it can accurately ensure the accuracy of the displacement sequence of each support template, avoiding a series of problems caused by chaotic displacement sequences. Moreover, during the displacement process, this method can also effectively prevent position interference between two adjacent support templates, thereby avoiding component damage and system failures caused by interference, and ensuring the safe and stable operation of the system. In addition, unified driving makes the entire operation process simpler and easier to control, reduces complex operation steps and control programs, lowers the skill requirements for operators, and is conducive to improving operation efficiency and work quality;

[0052] X. In the present invention, the two side walls of each support template are inclined from the inner arc to the outer arc direction to form intersecting edges, and the arc length of the inner arc of the support template is less than the arc length of its outer arc. This can ensure that when the four groups of support templates extend outward and abut against the inner side wall of the well hole, the outer side walls of the four groups of support templates can form a complete annular support mold, ensuring more stable and comprehensive support for the inner side wall of the well hole, effectively preventing the inner side wall of the well hole from deforming or being damaged during construction or use, and ensuring the stability and safety of the well hole structure. Moreover, when one of the support templates moves towards the center of the seat body to achieve the retraction operation, due to the side wall structure of the support template, the support template can smoothly complete the retraction action without being hindered by the side walls of adjacent support templates, ensuring the operation independence and smoothness of each support template, avoiding the problem of displacement interference between adjacent support templates during the operation process, reducing the risk of system failures that may be caused by component interference. At the same time, since there is no displacement interference, the operation efficiency of the system is improved, and the support and retraction operations can be completed more quickly, shortening the time required for construction or maintenance and reducing the impact on the project progress;

[0053] XI. In the present invention, through the first arc-shaped plate, the arc-shaped supporting table, the second arc-shaped plate, and the arc-shaped slot, the supporting formwork can be stably supported. By means of the space formed by the arc-shaped supporting table and the second arc-shaped plate, the horizontal direction of the arc-shaped slot is limited. Moreover, the upper surface of the supporting formwork that is supported inwardly from the outside forms a stable supporting whole with the manhole cover system, ensuring that the supporting formwork after being supported against the inner wall of the well hole is limited in both the horizontal and vertical directions, forming a highly stable supporting structure. The auxiliary support unit realizes a more comprehensive and stable anti-settlement support system for the manhole cover system, further improving the anti-settlement effect, effectively reducing a series of problems such as road depressions and vehicle jolts caused by settlement, thus ensuring the flatness of the road and the comfort of driving. Moreover, the stable supporting structure can also extend the service life of the well hole and related facilities, reduce the costs and inconveniences caused by frequent repairs and replacements, improve the operating efficiency of the entire system. At the same time, its stable characteristics also facilitate subsequent inspection, maintenance, and management work, making the entire system easier to operate and monitor during long-term use, further enhancing the practicality and reliability of the system;

[0054] XII. In the present invention, the disassembly and installation of the supporting formwork between the arc-shaped supporting table and the second arc-shaped plate are very convenient. Once the supporting formwork is limited by the arc-shaped supporting table and the second arc-shaped plate, the stability of the supporting formwork during the supporting process can also be ensured. Moreover, the outer side wall of the supporting formwork and the outer side wall of the arc-shaped supporting table are located on the same vertical arc plane, that is, the outer side wall of the arc-shaped supporting table does not extend outward relative to the outer side wall of the supporting formwork. That is, while the arc-shaped supporting table meets the requirements for supporting and installing the supporting formwork, it will not have an adverse impact on the overall flatness of the inner wall of the well hole. On the one hand, it can ensure the flatness of the inner wall of the well hole, contribute to maintaining the flatness of the well hole structure, and avoid visual defects and well hole defects caused by uneven structure. On the other hand, the flat inner wall helps to ensure the smoothness of construction, provides a good basic condition for subsequent construction operations such as pipeline laying and equipment installation, reduces construction obstacles and errors that may be caused by uneven inner walls. Moreover, due to the flat inner wall, media such as water flow can pass through the well hole more smoothly, reducing water flow disorder and energy loss caused by uneven wall surfaces, which is beneficial to the efficient operation of the underground drainage or other fluid transportation systems;

[0055] XIII. The present invention is provided with a power unit for driving the strip-shaped groove to rotate intermittently. Through the power unit, it can be promoted that during the intermittent rotation of the circular turntable, the four groups of supporting formworks are automatically retracted inward or extended outward in sequence respectively, which not only meets the requirement of driving the circular turntable to rotate to realize the displacement of the supporting formwork, but also can ensure that when the supporting formwork is installed or disassembled, the arc-shaped supporting table and the second arc-shaped plate are in a stable locked state, which is more conducive to supporting or disassembling the supporting formwork in a stable environment;

[0056] 14. The present invention is provided with a strip-shaped groove, which can clearly indicate the rotation angle and the position after rotation of the first rotating rod, so that the staff can quickly and effectively know the rotation direction of the circular turntable in the inner cavity of the seat body, and realize the recovery and disassembly of each support template one by one as needed;

[0057] 15. Through the cooperation of components such as a turntable and a dialing pin, the present invention can make the second rotating rod rotate one week and drive the first rotating rod to rotate 45 degrees, that is, it can ensure that the circular turntable rotates intermittently by 45 degrees each time. When the circular turntable rotates 45 degrees, the moving pin can move from the first chute to the inner cavity of the U-shaped groove. When the circular turntable continues to rotate 45 degrees, the moving pin can enter the inner cavity of the second chute. That is, by the circular turntable rotating intermittently twice by 45 degrees, the smooth transition movement of the moving pin from the first chute to the inner cavity of the second chute can be realized;

[0058] 16. The present invention is provided with the cooperative limit of a limit disk and a recessed part, which can ensure that the rotated turntable is in a stable position and will not rotate by itself. Furthermore, it can ensure that the rotated first rotating rod and the circular turntable are both in a stable state, so as to ensure that the support templates arranged at the subsequent arc-shaped supporting table and the second arc-shaped plate are kept stable, achieving the purpose of stable support;

[0059] 17. The present invention is provided with a second rotating rod and a handwheel, and the rotation of the second rotating rod can be driven at a high place. Compared with directly driving the dialing pin to rotate by manually reaching deep into the upper surface of the seat body, it is easier to operate. That is, the staff does not need to reach deep into the well hole. By opening the cover plate, the handwheel can be directly driven to rotate, and then the subsequent arc-shaped supporting table and the second arc-shaped plate can be extended outward, as well as the assembly and support of the support templates can be realized;

[0060] 18. The present invention sets a limit function for the moving arm. When the moving pin, the moving block, and the moving arm are stressed and move towards the middle, the second insertion rod can be automatically inserted into the inner cavity of the second insertion hole, thereby realizing the automatic limit locking of the moving arm at the seat body. This kind of automatic limit locking mechanism can ensure that while the moving arm moves towards the middle of the seat body, the locking operation of the first arc-shaped plate, the arc-shaped supporting table, and the second arc-shaped plate after displacement can be automatically completed, ensuring that the moving arm is in a stable state during the disassembly operation of the support templates on the arc-shaped supporting table and the second arc-shaped plate. Furthermore, it can ensure that the entire disassembly process of the support templates will be in a stable environment. A stable disassembly environment is conducive to ensuring the orderliness of the entire disassembly process, reducing potential safety hazards that may be caused by an unstable environment, greatly facilitating the operation of the staff, enabling them to carry out work more calmly and safely, reducing potential risks brought by an unstable operation environment, and ensuring the accuracy of disassembling the support templates. Furthermore, it can ensure that the subsequent reuse or treatment of the support templates is more smooth, improving the recyclability of components and the utilization rate of resources;

[0061] XIX. In the present invention, through components such as the driving block, inclined end face, roller, and second spring, the second insertion rod can be driven to move upward to disengage from the inner cavity of the corresponding second jack, thereby realizing the release of the braking unit from the limit of the moving arm, ensuring that the moving arm automatically extends outward under the elastic force of the first spring, so as to realize the outward movement of the arc-shaped supporting platform at the outer end of the moving arm and the supporting formwork supported by the second arc-shaped plate, and realizing that the supporting formwork abuts against the inner side wall of the well hole to form a supporting structure;

[0062] XX. Through the arrangement of components such as the gear, rotating ring, and fixing pin in the present invention, the four driving blocks can be driven to synchronously drive the second insertion rods at their respective positions to disengage from the inner cavities of the corresponding second jacks. That is, in the present invention, the driving for the four second insertion rods to disengage from the inner cavities of the second jacks can be realized synchronously, with unified driving power, ensuring the synchronism of the four second insertion rods to release the limit, and without the need to operate each second insertion rod one by one, which saves more operation steps and improves the operation efficiency;

[0063] XXI. A torsion spring is provided in the present invention. When an external force for rotating the second rotating shaft is applied, the torsion spring can be caused to undergo elastic deformation, and when the driving force for rotating the second rotating shaft is removed, the second rotating shaft can be automatically reset, thereby realizing the reverse rotation and reset of the rotating ring, ensuring that the driving blocks at each position simultaneously and automatically disengage from below the corresponding top blocks, leaving enough space for the subsequent automatic descent of the second insertion rods, and preventing the driving blocks from staying below the top blocks and affecting the downward movement of the second insertion rods;

[0064] XXII. The present invention is provided with an arc-shaped groove and a fixing pin, which while ensuring the rotational stability of the rotating ring, ensure that the rotating ring and the seat body always rotate relative to each other along the same center, so as to ensure the accuracy of the displacement of each group of driving blocks driving each group of rollers;

[0065] XXIII. The non-electric power support method adopted in this application abandons the complex motor drive system and adopts a mechanical support structure, greatly reducing the fault points of the system, significantly improving the reliability of the manhole cover support system. Without complex electronic components and vulnerable parts, it can better adapt to harsh usage environments, ensuring that the manhole cover support system can operate stably and reliably under various harsh conditions. It also does not require complex motor drive equipment and control systems, with relatively less investment in equipment procurement and system construction, and can effectively reduce the initial investment cost of the manhole cover support system;

[0066] In summary, the present invention exhibits many beneficial effects in the anti-settlement support of manhole covers: First, in response to the problem that manhole covers are prone to settlement due to repeated vehicle rolling and loosening of the soil around the well during long-term use, by setting the first support rod and the second support rod, a stable supporting force is provided for the cover plate, effectively resisting these factors, avoiding settlement and loosening, maintaining the road surface flat, ensuring the safe and smooth passage of vehicles and pedestrians, meeting the requirements of stable use of the manhole cover and being flush with the road, and the four groups of support units are evenly distributed circumferentially along the manhole cover seat, and the constructed support system can provide equal support in all directions, resist external forces, and avoid depression settlement; in terms of flexibility, it has the characteristic of flexible adjustment of the total length of the first support rod and the second support rod, and can accurately control the support height of the manhole cover system within a reasonable range, so that the manhole cover system can be installed flush with roadbeds of different heights, not only ensuring stable support to prevent settlement, but also being flexibly adapted to various situations; in terms of structural design, the setting of the second support rod, the first rotating shaft, and the support foot, with the surface contact between the support foot and the upper surface of the support platform, avoids the piercing of the second support rod, provides reliable support for the second support rod and the first support rod, enhances the support stability of the manhole cover system, and at the same time, the positioning hole, the second positioning pin, and the first rotating shaft can flexibly adjust and lock the inclination angle of the support foot relative to the second support rod to ensure close fit for support; in terms of connection, the setting of the hanging component and the U-shaped frame avoids installation interference, ensures the integrity of the system and the smooth assembly process, and the use of components such as the circular turntable and the first chute enables the support template to move along the inner cavity, realizing retraction and disassembly inward or extension and support outward, which can not only be reused, but also form an annular support mold that fits the inner wall of the well hole when extending outward, preventing the material on the inner wall of the well hole from falling, improving the construction quality and the smoothness of the process; in terms of automated operation, the U-shaped groove and the first spring enable the moving pin to automatically move in the inner cavity of the first chute or the second chute, and through the rotation of the circular turntable, the support templates are displaced one by one in sequence, with simple operation, improved efficiency, reduced labor costs, and the advantage of driving the support templates to displace by the unified driving force circular turntable is significant, saving power energy, enhancing the system stability, and avoiding component interference; in addition, the unique side wall structure of the support template ensures the independence and smoothness of the operation, shortens the construction and maintenance time, forms a highly stable support structure through the support and limit of components such as the first arc-shaped plate on the support template, improves the anti-settlement effect, extends the service life of the facility, is convenient for inspection and maintenance, and the driving and limiting components can achieve intermittent rotation, automatic displacement, and stable locking, which is convenient for operation, and synchronous driving can improve the operation efficiency and the displacement accuracy is higher; finally, the non-electric power support method adopted by the present invention replaces the complex motor drive system with a mechanical structure, reduces the failure points, has high reliability, is suitable for harsh environments, reduces the initial investment cost, and ensures the stable and reliable operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] Figure 1 is a schematic structural diagram of the support platform of the present invention;

[0068] Figure 2Schematic diagram of the manhole cover seat of the present invention;

[0069] Figure 3 is Figure 2 enlarged view of part A;

[0070] Figure 4 Schematic diagram of the support formwork of the present invention;

[0071] Figure 5 Schematic diagram of the first support rod of the present invention;

[0072] Figure 6 is Figure 5 enlarged view of part B;

[0073] Figure 7 is Figure 4 enlarged view of part C;

[0074] Figure 8 Schematic diagram of the vertical arm of the present invention;

[0075] Figure 9 Schematic diagram of the seat body of the present invention;

[0076] Figure 10 is Figure 9 enlarged view of part D;

[0077] Figure 11 is Figure 9 enlarged view of part E;

[0078] Figure 12 is Figure 9 enlarged view of part F;

[0079] Figure 13 is Figure 9 enlarged view of part G;

[0080] Figure 14 Top view schematic diagram of the swivel ring of the present invention;

[0081] Figure 15 Top view schematic diagram of the first chute of the present invention;

[0082] Figure 16 Schematic diagram of the circular turntable of the present invention;

[0083] Figure 17 Bottom view schematic diagram of the arc-shaped slot of the present invention;

[0084] Figure 18 is Figure 17 enlarged view of part H;

[0085] Figure 19 Schematic diagram of the state when the second jack is retracted into the seat body of the present invention;

[0086] Figures 1 to 19 Among them, 1. Road main body, 1001. Subgrade, 1002. Support platform, 1003. Well hole, 2. Manhole cover system, 2001. Manhole cover seat, 2002. Cover plate, 2003. First concave edge, 2004. Second concave edge, 2005. Mounting seat, 2006. Mounting block, 2007. Frame body, 3. Support unit, 3001. Connecting seat, 3002. First support rod, 3003. Sleeve seat, 3004. Second support rod, 3005. First positioning pin, 3006. First rotating shaft, 3007. Support foot, 3008. Positioning hole, 3009. Second positioning pin, 4. Hanging component, 4001. Vertical arm, 4002. U-shaped frame, 4003. Third positioning pin, 5. Support unit, 5001. Seat body, 5002. Ring body, 5003. Circular turntable, 5004. First chute, 5005. Second chute, 5006. U-shaped groove, 5007. Moving arm, 5008. Moving block, 5009. Moving pin, 5010. First spring, 5011. First arc plate, 5012. Arc-shaped supporting platform, 5013. Second arc plate, 5014. Support formwork, 5015. Arc-shaped slot, 6. Power unit, 6001. First rotating rod, 6002. Turntable, 6003. Strip-shaped groove, 6004. Concave part, 6005. Second rotating rod, 6006. Limiting disc, 6007. Poking rod, 6008. Poking pin, 6009. Pointer, 6010. Support arm, 6011. First extension seat, 6012. First jack, 6013. Handwheel, 6014. Convex block, 6015. First insertion rod, 7. Braking unit, 7001. Second jack, 7002. Second insertion rod, 7003. Top block, 7004. Second spring, 7005. Roller, 7006. Driving block, 7007. Inclined end face, 7008. Rotating ring, 7009. Arc-shaped groove, 7010. Fixed pin, 7011. Tooth ring, 7012. Second rotating shaft, 7013. Gear, 7014. Handle, 7015. Fixed column, 7016. Second extension seat, 7017. Torsion spring. Specific implementation mode

[0087] The following combines specific implementation cases and attachments Figures 1 to 19 to further illustrate the present invention, but the present invention is not limited to these embodiments.

[0088] Mainly refer to Figures 1 to 8 As shown, an anti-settlement manhole cover support construction device includes a road main body 1. Mainly refer to Figure 1 and Figure 2As shown, a manhole cover system 2 is provided inside the road main body 1. The manhole cover system 2 is stably supported inside the road main body 1 to form a stable installation relationship. A support unit 3 for preventing the settlement of the manhole cover system 2 is provided below the manhole cover system 2. By means of the support unit 3, the stable support of the manhole cover system 2 inside the road main body 1 is ensured, and the upper surface of the manhole cover system 2 is flush with the road main body 1 to ensure the flatness of the road surface. Four groups of support units 3 are provided, and the four groups of support units 3 are arranged at equal intervals along the circumferential direction of the manhole cover system 2. Specifically, two adjacent groups of support units 3 are arranged at an interval of 90 degrees, and the four groups of support units 3 are evenly distributed along the circumferential direction of the manhole cover seat 2001 to construct a support system with equal support capacity at all angles around the manhole cover system 2. This system can provide support for the manhole cover system 2 in all directions and without dead angles, ensuring that the support force received by the manhole cover system 2 is the same in all directions, effectively resisting external forces from all directions, preventing it from sagging and settling due to external forces, and at the same time preventing the manhole cover system 2 from loosening under the action of external forces, affecting the overall stability of the manhole cover system 2, and always maintaining the support state where the manhole cover system 2 is flush with the upper surface of the road main body 1;

[0089] For details, please refer to Figure 1 As shown, the road main body 1 includes a roadbed 1001, a support platform 1002, and a well hole 1003. The support platform 1002 is lower than the roadbed 1001. The well hole 1003 is a cylindrical hole. The support unit 3 vertically supports the manhole cover system 2 above the well hole 1003 to prevent the manhole cover system 2 from settling downward;

[0090] For details, please refer to Figure 2 、 Figure 3 、 Figure 7As shown, the manhole cover system 2 includes a manhole cover seat 2001, on which a cover plate 2002 is rotatably fastened by a pin shaft. Inside the manhole cover seat 2001, a first recessed edge 2003 and a second recessed edge 2004 are provided. The upper surfaces of the manhole cover seat 2001, the first recessed edge 2003, and the second recessed edge 2004 are arranged in a stepped downward trend. The settings of the first recessed edge 2003 and the second recessed edge 2004 provide installation positions for the subsequent installation of other components. Along the circumferential direction of the inner wall of the manhole cover seat 2001, a number of mounting seats 2005 are equidistantly arranged. Specifically, four mounting seats 2005 are provided. An installation block 2006 is embedded in the mounting seat 2005. The installation block 2006 moves along the inner cavity of the mounting seat 2005, enabling the placement or disassembly of the installation block 2006 in the inner cavity of the mounting seat 2005. And because the mounting seat 2005 is provided with an inner cavity with a right-angled corner, when the installation block 2006 is placed at the bottom of the inner cavity of the mounting seat 2005, there is a limit in the left-right direction, that is, the installed installation block 2006 can remain stable in the inner cavity of the mounting seat 2005 and will not rotate left and right under the action of external forces. The installation block 2006 is installed with a frame body 2007. The frame body 2007 is installed and supported by four groups of installation blocks 2006. And through the frame body 2007, sundries at the top of the inner cavity of the manhole cover seat 2001 can be blocked to prevent the sundries from entering the well hole 1003 after entering the inner cavity of the manhole cover seat 2001 and causing congestion. The center of the frame body 2007 is concentric with the center of the manhole cover seat 2001, ensuring that the frame body 2007 is concentrically supported and placed in the inner cavity of the manhole cover seat 2001.

[0091] Mainly refer to Figure 1 、 Figures 4 to 6As shown, each set of support units 3 includes a connecting seat 3001. Specifically, the connecting seat 3001 is fixedly connected to the side wall of the well cover seat 2001. With the support unit 3, a stable support relationship is formed on the outer side wall of the well cover seat 2001. One end of a first support rod 3002 is rotatably connected to the inside of the connecting seat 3001 through a pin shaft. A socket 3003 is fixedly sleeved and installed at the other end of the first support rod 3002. A second support rod 3004 is slidably and internally embedded in the socket 3003. The second support rod 3004 is arranged parallel to the first support rod 3002. By the relative movement of the second support rod 3004 in the inner cavity of the socket 3003, the total length of the second support rod 3004 and the first support rod 3002 can be adjusted to meet the support requirements of well cover seats 2001 with different heights, ensuring that the well cover seat 2001 after support is always flush with the upper surface of the roadbed 1001. A first positioning pin 3005 is threadedly penetrated through the socket 3003, and the free end of the first positioning pin 3005 extends into the inner cavity of the socket 3003 and abuts against the side wall of the second support rod 3004. The second support rod 3004 is locked and limited after moving in the inner cavity of the first support rod 3002 through the first positioning pin 3005, ensuring that the first support rod 3002 and the second support rod 3004 form a stable support unit, and further ensuring that the subsequent well cover seat 2001 remains stable when being supported;

[0092] In the present invention, the first support rod 3002 and the second support rod 3004 are provided to support the well cover system 2, providing a more stable supporting force for the cover plate 2002, effectively resisting factors such as repeated vehicle rolling and loosening of the soil around the well, avoiding the depression and settlement of the cover plate 2002, maintaining the road surface flat, ensuring the safe and smooth passage of vehicles and pedestrians, and meeting the requirements of stable use of the well cover and its flush integration with the road; in addition, the present invention has the characteristic of flexibly adjusting the total length of the first support rod 3002 and the second support rod 3004, and can accurately control the support height of the well cover system 2 within a reasonable range, ensuring that the position of the well cover system 2 fits the roadbed 1001 with different heights, realizing their flush installation. This not only ensures the stable support of the well cover system 2 and effectively prevents settlement, but also can flexibly adapt to various roadbeds 1001 with different heights, meeting the actual requirements of always maintaining flush consistency.

[0093] For main reference Figure 5 and Figure 6As shown in the figure, each set of support units 3 further includes a first rotating shaft 3006 penetrating and installed at the bottom end of the second support rod 3004. A support foot 3007 is rotatably connected to the outside of the first rotating shaft 3006 through a bearing. The support foot 3007 is set in a U shape, and the bottom end face of the support foot 3007 is a smooth plane. When the bottom end face of the support foot 3007 contacts the upper surface of the support platform 1002, surface contact is achieved. Compared with the second support rod 3004 directly contacting the support platform 1002, over time, it is easy for the second support rod 3004 to sink into the support platform 1002, which is likely to cause the skew of the manhole cover seat 2001 support. The support foot 3007 is provided with a plurality of positioning holes 3008 along its width direction. A second positioning pin 3009 is penetrated through the first rotating shaft 3006, and the free end of the second positioning pin 3009 is inserted into one of the positioning holes 3008. Through the second positioning pin 3009, the rotated support foot 3007 and the first rotating shaft 3006 can be stably connected, ensuring that the support foot 3007 after adjusting the angle still forms a locked connection relationship with the second support rod 3004;

[0094] By providing the second support rod 3004, the first rotating shaft 3006, and the support foot 3007, the support foot 3007 can be in close contact with the upper surface of the support platform 1002 and form a butt, effectively preventing the pointed bottom end of the second support rod 3004 from directly piercing into the support platform 1002. By using the surface contact method between the bottom end face of the support foot 3007 and the upper surface of the support platform 1002, a stable and reliable support structure is provided for the second support rod 3004 and the first support rod 3002, enhancing the stability of the support of the manhole cover system 2; In addition, with the components of the positioning hole 3008, the second positioning pin 3009, and the first rotating shaft 3006, the inclination angle of the support foot 3007 relative to the second support rod 3004 can be flexibly adjusted and locked. Whether facing the inclined or horizontal state of the upper surface of the support platform 1002, the inclination or horizontal degree of the lower surface of the support foot 3007 can be accurately adjusted through these components, ensuring that the lower surface of the support foot 3007 is always in close fit with the upper surface of the support platform 1002, and constructing a stable and fitting support relationship.

[0095] For main reference Figure 4 、 Figure 9 、 Figures 15 to 17 As shown in the figure, a support unit 5 is provided below the manhole cover system 2. Through the support unit 5, an internal support structure can be formed below the manhole cover system 2 and inside the cavity of the well hole 1003, assisting the support unit 3 to form a more stable support environment for the manhole cover system 2;

[0096] For main reference Figure 15As shown, the support unit 5 includes a base body 5001. Inside the base body 5001, a ring body 5002 is installed. The ring body 5002 is concentric with the base body 5001. A circular turntable 5003 is rotatably arranged in the middle of the base body 5001 through a bearing. The circular turntable 5003 under the action of an external force can rotate around the center of the base body 5001. A first chute 5004, a second chute 5005, and a U-shaped groove 5006 are respectively formed on the circular turntable 5003. The first chute 5004 is located outside the second chute 5005, and both the first chute 5004 and the second chute 5005 are concentric with the circular turntable 5003. The second chute 5005, the U-shaped groove 5006, and the first chute 5004 form a smoothly connected chute channel that is internally and externally connected. When the circular turntable 5003 rotates, it can drive the first chute 5004, the second chute 5005, and the U-shaped groove 5006 to rotate circumferentially at the same time; mainly refer to Figure 15 and Figure 16 As shown, among them, the U-shaped groove 5006 is set in a U shape, and the U-shaped opening of the U-shaped groove 5006 is arranged in a direction away from the center of the circular turntable 5003, that is, the U-shaped opening of the U-shaped groove 5006 faces outward. The two free ends of the U-shaped groove 5006 are connected to the first chute 5004 and form a connected state;

[0097] Using the unified driving power source of the circular turntable 5003, it is possible to orderly drive the four groups of support templates 5014 to perform displacement operations one by one and successively. Compared with the traditional method of separately equipping each support template 5014 with a driving system, it has significant advantages: First, adopting the unified driving power circular turntable 5003 can greatly save power energy, reduce the power cost, and save a large amount of resources during long-term use. At the same time, this method ensures that the equipment has a high degree of coordination when functioning, and each component can cooperate and operate in coordination with each other to form an organic whole, enhancing the stability and reliability of the entire system. In addition, it can accurately ensure the accuracy of the displacement sequence of each support template 5014, avoiding a series of problems caused by chaotic displacement sequences. Moreover, during the displacement process, this method can also effectively prevent position interference between two adjacent support templates 5014, thereby avoiding component damage and system failures caused by interference, ensuring the safe and stable operation of the system. In addition, unified driving makes the entire operation process simpler and easier to control, reduces complex operation steps and control programs, and reduces the skill requirements for operators, which is beneficial to improving operation efficiency and work quality.

[0098] Mainly refer to Figure 15 and Figure 16As shown, the support unit 5 further includes four groups of supporting components, which are arranged equidistantly along the circumference on the side wall of the seat body 5001; each group of supporting components includes a moving arm 5007 that vertically and slidably penetrates the side walls of the seat body 5001 and the ring body 5002. One end of the moving arm 5007 located inside the seat body 5001 is installed with a moving block 5008, and a moving pin 5009 is vertically installed at the bottom end of the moving block 5008. The moving pin 5009 is slidably embedded in the inner cavity of the smooth chute channel formed by the second chute 5005, the U-shaped groove 5006 and the first chute 5004. By rotating the circular turntable 5003, the moving pin 5009 can be driven to move along the inner cavity of the above chute channel, and then the moving block 5008 and the moving arm 5007 at the corresponding position can be driven to move relative to the seat body 5001. One end of the moving arm 5007 extending out of the side wall of the seat body 5001 is installed with a first arc-shaped plate 5011, and an arc-shaped supporting platform 5012 is installed on the side of the first arc-shaped plate 5011 facing away from the moving arm 5007. A second arc-shaped plate 5013 is installed on the arc-shaped supporting platform 5012. A first spring 5010 is sleeved on the moving arm 5007, and both ends of the first spring 5010 are respectively connected to the moving block 5008 and the side wall of the ring body 5002; wherein, the side walls of the first arc-shaped plate 5011, the arc-shaped supporting platform 5012 and the second arc-shaped plate 5013 are all set to be arc-shaped, and the side wall arcs of the three are set to be concentric arcs. By moving the moving arm 5007, the first arc-shaped plate 5011, the arc-shaped supporting platform 5012 and the second arc-shaped plate 5013 can be driven to move synchronously relative to the seat body 5001; mainly refer to Figure 17As shown in the figure, inner support components are detachably arranged on the four groups of supporting components; each group of inner support components includes a supporting formwork 5014. An arc-shaped slot 5015 is opened at the bottom end of the supporting formwork 5014. The arc-shaped slot 5015 is sleeved on the second arc-shaped plate 5013 from top to bottom. The outer side wall of the supporting formwork 5014 and the outer side wall of the arc-shaped supporting platform 5012 are arranged corresponding to each other up and down, that is, the outer side wall of the supporting formwork 5014 and the outer side wall of the arc-shaped supporting platform 5012 are located on the same vertical arc plane. That is, the outer side wall of the arc-shaped supporting platform 5012 does not extend outward relative to the outer side wall of the supporting formwork 5014. That is, while the arc-shaped supporting platform 5012 meets the requirement of supporting and installing the supporting formwork 5014, it will not have an adverse impact on the overall flatness of the inner side wall of the well hole 1003. On the one hand, it can ensure the flatness of the inner side wall of the well hole 1003, which helps to maintain the flatness of the well hole structure and avoid visual defects and well hole defects caused by uneven structure. On the other hand, the flat inner side wall helps to ensure the smoothness of construction, provides a good basic condition for subsequent construction operations such as pipeline laying and equipment installation, reduces construction obstacles and errors that may be brought about by uneven inner side walls. Moreover, because the inner side wall is flat, it can make media such as water flow more smooth when passing through the well hole, reduce water flow disorder and energy loss caused by uneven wall surfaces, and is conducive to the efficient operation of the underground drainage or other fluid conveying systems. The supporting formwork 5014 is arranged inside the well hole 1003. After the arc-shaped slot 5015 is sleeved on the arc-shaped supporting platform 5012, the supporting formwork 5014 is stably inserted and installed at the arc-shaped supporting platform 5012 and the second arc-shaped plate 5013. Subsequently, by moving the moving arm 5007 outward, the supporting formwork 5014 can be moved outward to abut against the inner side wall of the well hole 1003 to realize the support of the inner side wall of the well hole 1003; mainly refer to Figure 8As shown, on the left and right side walls of each support formwork 5014, edges that converge are formed by being inclined from the inner arc towards the outer arc direction, and the arc length of the inner arc of the support formwork 5014 is less than the arc length of its outer arc. Thus, when the four groups of support formworks 5014 extend outward and abut against the inner side wall of the well hole 1003, the outer side walls of the four groups of support formworks 5014 can form a complete annular support mold, ensuring that the support for the inner side wall of the well hole 1003 is more stable and comprehensive, effectively preventing the inner side wall of the well hole 1003 from deforming or being damaged during construction or use, and guaranteeing the stability and safety of the well hole structure. Moreover, when one of the support formworks 5014 moves towards the center of the seat body 5001 to achieve the retraction operation, thanks to the side wall structure of the support formwork 5014, this support formwork 5014 can smoothly complete the retraction action without being hindered by the side walls of adjacent support formworks 5014, ensuring the operational independence and smoothness of each support formwork 5014, avoiding the problem of displacement interference between adjacent support formworks 5014 during the operation process, reducing the risk of system failures that may be caused by component interference. At the same time, since there is no displacement interference, the operation efficiency of the system is improved, and the support and retraction operations can be completed more quickly, shortening the time required for construction or maintenance and reducing the impact on the project progress;

[0099] Place one of the support formworks 5014 into the corresponding arc-shaped support platform 5012 and the second arc-shaped plate 5013 on the right side, so that the arc-shaped slot 5015 at the bottom end of the support formwork 5014 is sleeved on the arc-shaped support platform 5012. After being sleeved, the support formwork 5014 is stably connected under the limitation of the arc-shaped support platform 5012 and the second arc-shaped plate 5013; during the process of the above-mentioned first rotating rod 6001 rotating clockwise by 45 degrees, since the moving arm 5007 is perpendicular to and slides through the seat body 5001 and the ring body 5002, with the elastic force of the first spring 5010 on the right side, it can prompt the moving pin 5009 on the right side to enter the inner cavity of the first sliding groove 5004 along the U-shaped groove 5006. At this time, the moving arm 5007 on the right side drives the second jack 7001 thereon to move out of the seat body 5001 towards the right side until the seat body 5001 moves to below the second insertion rod 7002 of this group on the right side. Under the elastic force of the second spring 7004, the second insertion rod 7002 is driven to move downward and insert into the inner cavity of the second jack 7001, that is, to lock the position of the moving arm 5007 extending out of the right side wall of the seat body 5001, ensuring that the support formwork 5014 placed at the free end of this moving arm 5007 tightly adheres to the inner side wall of the well hole 1003, forming a stable support for the well hole 1003 in the horizontal direction, and at the same time ensuring that the overall support equipment is in a stable state when in this support state, that is, in the Figure 15 and Figure 8 state.

[0100] Through the first arc-shaped plate 5011, the arc-shaped supporting platform 5012, the second arc-shaped plate 5013, and the arc-shaped slot 5015, the support formwork 5014 can be stably supported, and by means of the space formed by the arc-shaped supporting platform 5012 and the second arc-shaped plate 5013, the horizontal direction of the arc-shaped slot 5015 is limited. Moreover, the upper surface of the support formwork 5014 that braces inwardly forms a stable support as a whole with the manhole cover system 2, ensuring that the support formwork 5014 after being braced against the inner wall of the well hole 1003 is limited in both the horizontal and vertical directions, forming a highly stable support structure, assisting the auxiliary support unit 3 to realize a more comprehensive and stable anti-settlement support system for the manhole cover system 2, further improving the anti-settlement effect, effectively reducing a series of problems such as road depressions and vehicle jolts caused by settlement, thus ensuring the flatness of the road and the comfort of driving. Moreover, the stable support structure can also extend the service life of the well hole and related facilities, reduce the costs and inconveniences brought about by frequent repairs and replacements, improve the operating efficiency of the entire system. At the same time, its stable characteristics also facilitate subsequent inspection, maintenance, and management work, making the entire system easier to operate and monitor during long-term use, further enhancing the practicality and reliability of the system.

[0101] By setting the circular turntable 5003, the first chute 5004, the second chute 5005, and the U-shaped groove 5006, it is possible to prompt each group of moving pins 5009 to move along the inner cavity of the first chute 5004 or the second chute 5005 to adjust the positions of the first arc-shaped plate 5011, the arc-shaped supporting platform 5012, and the second arc-shaped plate 5013, prompting the first arc-shaped plate 5011, the arc-shaped supporting platform 5012, and the second arc-shaped plate 5013 to move towards or away from the center of the seat body 5001. Finally, the four groups of support formworks 5014 can be retracted inward for disassembly or extended outward for support. Retracting inward can realize the disassembly of the support formwork 5014 for subsequent reuse to save resources and reduce the usage cost. When the four groups of support formworks 5014 extend outward, they form an annular support mold that closely fits the inner wall of the well hole 1003, providing all-round inward bracing support for the inner wall of the well hole 1003, effectively preventing the materials on the inner wall of the well hole 1003 from falling naturally during the construction process, avoiding construction interruptions or quality problems caused by material falling. At the same time, it can prompt the well hole 1003 to form a well hole structure with a sufficiently smooth and stable inner wall during construction. The stable inner wall can reduce the repair and adjustment work during the construction process, and the smooth inner wall helps with subsequent pipeline installation or other operations, avoiding the friction and resistance that may be brought about by a rough inner wall, thus ensuring the construction quality and the smoothness of the construction process, providing a more reliable guarantee for the entire well hole construction project, and enhancing the quality and stability of the overall project.

[0102] The present invention is provided with a U-shaped groove 5006, the function of which is to construct the first slide groove 5004 and the second slide groove 5005 into a slide groove channel that is interconnected. At the same time, combined with the first spring 5010 component, the movable pin 5009 can be automatically moved and transformed in the inner cavity of the first slide groove 5004 or the second slide groove 5005, so that the first curved plate 5011, the curved supporting platform 5012 and the second curved plate 5013 can be smoothly displaced in the direction close to or away from the center of the seat body 5001. In addition, the movement operation of the above-mentioned movable pin 5009 in the inner cavity of the first slide groove 5004 or the second slide groove 5005 can be automatically completed only by the circumferential rotation of the circular turntable 5003, without the need for manual transformation and adjustment, that is, the present invention can realize automatic transformation and transformation of the first slide groove 5004 or the second slide groove 5005 by the circular turntable 5003. The rotation of the platform 5003 can realize the displacement operation of the four groups of support templates 5014 one by one and in sequence. Specifically, by driving the rotation of the circular turntable 5003, the four groups of support templates 5014 can be easily moved outward one by one in sequence for internal support or moved inward for disassembly and separation. The operation process is greatly simplified, which brings great convenience to the anti-subsidence support operation process of the manhole cover. The automated operation significantly improves work efficiency, reduces manpower input, reduces labor costs, avoids errors and inconsistencies that may be caused by manual operation, and ensures the accuracy and stability of the operation. In addition, this operation method makes the support or disassembly operation of the support template 5014 extremely simple, shortens the construction period, and improves the progress of the project.

[0103] Main references Figure 4 , Figure 7 and Figure 8 As shown, the manhole cover system 2 and the supporting unit 5 are connected through a hanging assembly 4, and the hanging assembly 4 includes a plurality of groups of hanging assemblies; each group of hanging assemblies includes a vertical arm 4001, the vertical arm 4001 is fixed and vertically mounted on the upper surface of the seat body 5001, a U-shaped frame 4002 is mounted on the top end of the vertical arm 4001, the U-shaped frame 4002 is arranged in a U shape, and a third positioning pin 4003 is penetrated and rotatably arranged on one end of the U-shaped frame 4002 away from the vertical arm 4001, specifically, the bottom end of the third positioning pin 4003 is threadedly embedded in the threaded hole on the mounting seat 2005, the third positioning pin 4003 is threadedly connected to the threaded hole of the mounting seat 2005, and the third positioning pin 4003 is used to cause the U-shaped frame 4002 and the vertical arm 4001 to form a connection relationship between the mounting seat 2005 and the seat body 5001;

[0104] The present invention is provided with a hanging component 4, which can stably connect the support unit 5 to the manhole cover system 2. And through the setting of the U-shaped frame 4002, it can avoid the interference of the installation of the hanging component 4 on the frame body 2007, effectively avoiding the interference problem of the hanging component 4 on the frame body 2007 during the installation process. This not only meets the functional requirements of the hanging component 4 to realize the connection and assembly of the support unit 5 and the manhole cover system 2, but also ensures that the frame body 2007 can be installed normally without obstruction, guaranteeing the integrity of the overall system and the smooth assembly process.

[0105] Mainly refer to Figure 8 , Figures 9 to 11 , Figures 15 to 17As shown, the circular turntable 5003 rotates intermittently and is locked after rotation through the power unit 6. There is a power unit 6 for driving the strip-shaped groove 6003 to rotate intermittently. Through the power unit 6, it can be ensured that during the intermittent rotation of the circular turntable 5003, the four groups of support templates 5014 are automatically retracted inward or extended outward in sequence, which not only meets the requirement of driving the circular turntable 5003 to rotate to achieve the displacement of the support template 5014, but also can ensure that when the support template 5014 is installed or disassembled, the arc-shaped support table 5012 and the second arc-shaped plate 5013 are in a stable locked state, which is more conducive to supporting or disassembling the support template 5014 in a stable environment; the power unit 6 includes a first rotating rod 6001 that rotates through a bearing and is vertically connected to the middle of the upper surface of the circular turntable 5003. The top end of the first rotating rod 6001 extends out of the upper surface of the base body 5001 and is fixedly installed with a turntable 6002. A number of strip-shaped grooves 6003 and recessed portions 6004 are respectively formed on the side wall of the turntable 6002. The number of the strip-shaped grooves 6003 and the recessed portions 6004 is the same, both are set to eight, ensuring that each time the recessed portion 6004 rotates once, the first rotating rod 6001 rotates 45 degrees, and the strip-shaped groove 6003 is arranged between two adjacent recessed portions 6004. A second rotating rod 6005 is rotatably connected to the upper surface of the base body 5001 through a bearing and is vertically connected thereto. A limit disk 6006 and a dial rod 6007 are fixedly installed on the second rotating rod 6005. The side wall of the limit disk 6006 is rotatably attached to the side wall of one of the recessed portions 6004 to achieve the limit of the rotated turntable 6002. The dial rod 6007 is arranged below the limit disk 6006. A dialing pin 6008 is vertically installed at one end of the dial rod 6007 away from the second rotating rod 6005. The dialing pin 6008 is rotatably embedded in the inner cavity of one of the strip-shaped grooves 6003. Through the circumferential rotation of the dialing pin 6008, the turntable 6002 is driven to rotate intermittently by 45 degrees and is locked in position after rotation. Through the cooperation of components such as the turntable 6002 and the dialing pin 6008, it can be ensured that when the second rotating rod 6005 rotates one week, the first rotating rod 6001 rotates by 45 degrees, that is, it can ensure that each time the circular turntable 5003 rotates intermittently by 45 degrees. When the circular turntable 5003 rotates by 45 degrees, the moving pin 5009 can move from the first chute 5004 to the inner cavity of the U-shaped groove 5006. When the circular turntable 5003 continues to rotate by 45 degrees, the moving pin 5009 enters the inner cavity of the second chute 5005. That is, through two intermittent rotations of the circular turntable 5003 by 45 degrees each time, the smooth transition movement of the moving pin 5009 from the first chute 5004 to the inner cavity of the second chute 5005 can be achieved;Among them, a pointer 6009 is installed at the top of the first rotating rod 6001, and the pointer 6009 is arranged in line with the central axis of one of the moving arms 5007. The bar groove 6003 can clearly indicate the rotation angle of the first rotating rod 6001 and the position after rotation, so that the staff can quickly and effectively know the rotation direction of the circular turntable 5003 in the inner cavity of the seat body 5001, so as to realize the retraction and disassembly of each supporting template 5014 one by one as needed. ;

[0106] Main references Figure 8 , Figure 9 and Figure 11 As shown, the power unit 6 also includes a remote operation component; the remote operation component includes a support arm 6010 vertically and fixedly installed on the upper surface of the seat body 5001, a plurality of first extension seats 6011 are arranged on the left side wall of the support arm 6010, a second rotating rod 6005 vertically penetrates the outer wall of the first extension seat 6011, and the second rotating rod 6005 is rotatably connected with the first extension seat 6011, a first plug hole 6012 is opened on the upper surface of the first extension seat 6011 at the top, the top end of the second rotating rod 6005 extends out of the first extension seat 6011 and is installed with a hand wheel 6013, a bump 6014 is installed on the side wall of the hand wheel 6013, and the bump 6014 A first plug rod 6015 is provided along the vertical direction, and the bottom end of the first plug rod 6015 is pluggable and embedded in the inner cavity of the first plug hole 6012; a second rotating rod 6005 and a hand wheel 6013 are provided, and the second rotating rod 6005 can be driven to rotate at a high place, which is easier to operate than manually going deep into the upper surface of the seat body 5001 to directly drive the driving pin 6008 to rotate, that is, manual labor does not need to go deep into the well hole 1003, and the hand wheel 6013 can be directly driven to rotate by opening the cover plate 2002, so that the subsequent arc-shaped support platform 5012 and the second arc plate 5013 can be extended outward and the support template 5014 can be assembled and supported.

[0107] Main references Figure 9 , Figures 12 to 14 , Figure 17 and Figure 18 As shown, a brake unit 7 is arranged above the seat body 5001, and the brake unit 7 includes a plurality of limit assemblies, and each set of limit assemblies is arranged corresponding to each movable arm 5007; each set of limit assemblies includes a second plug hole 7001 opened on the movable arm 5007, and also includes a second plug rod 7002 that slides through the upper surface of the seat body 5001 in the vertical direction, and the bottom end of the second plug rod 7002 is pluggable and embedded in the inner cavity of the second plug hole 7001, and a top block 7003 is vertically installed on the top of the second plug rod 7002, and a second spring 7004 is sleeved on the second plug rod 7002, and the two ends of the second spring 7004 are respectively connected to the upper surface of the seat body 5001 and the lower surface of the top block 7003; refer to Figure 19As shown, when the second jack 7001 is in the inner cavity of the base body 5001 and the four groups of movable pins 5009 are all limited in the inner cavity of the second chute 5005, the first spring 5010 is in a forced compression state at this time, the second plug rod 7002 disengages from the inner cavity of the second jack 7001 at the corresponding position of the bottom end, and the free end of the bottom end of the second plug rod 7002 is in sliding contact with the upper surface of the movable arm 5007, and the second spring 7004 is in a forced tension state;

[0108] The present invention provides a limiting function for the movable arm 5007. When the movable pin 5009, the movable block 5008, and the movable arm 5007 are stressed and move towards the middle, the second plug rod 7002 can be automatically embedded into the inner cavity of the second jack 7001, thereby realizing the automatic limiting and locking of the movable arm 5007 at the base body 5001. This automatic limiting and locking mechanism can ensure that while the movable arm 5007 moves towards the middle of the base body 5001, the locking operation after the displacement of the first arc-shaped plate 5011, the arc-shaped supporting table 5012, and the second arc-shaped plate 5013 is automatically completed, ensuring that when the supporting formwork 5014 on the arc-shaped supporting table 5012 and the second arc-shaped plate 5013 is disassembled subsequently, the movable arm 5007 is in a stable state, and thus ensuring that the entire disassembly process of the supporting formwork 5014 will be in a stable environment. A stable disassembly environment is conducive to ensuring the orderliness of the entire disassembly process, reducing potential safety hazards that may be caused by an unstable environment, greatly facilitating the operation of the staff, enabling them to carry out work more calmly and safely, reducing potential risks brought by an unstable operation environment, and ensuring the accuracy of disassembling the supporting formwork 5014, thereby ensuring that the subsequent reuse or treatment of the supporting formwork 5014 is more smooth, improving the recyclability of components and the utilization rate of resources.

[0109] In addition, the braking unit 7 further includes a brake release assembly; the brake release assembly includes a rotating ring 7008 rotatably disposed on the upper surface of the seat body 5001. The rotating ring 7008 is concentric with the center of the seat body 5001. A plurality of driving blocks 7006 are equidistantly arranged along the circumference on the upper surface of the rotating ring 7008. An inclined end face 7007 is provided on the upper surface of each driving block 7006. A roller 7005 is rotatably disposed on the lower surface of the top block 7003 through a frame and a pin shaft. The inclined end face 7007 is arranged corresponding to the position of the roller 7005. By the clockwise rotation of the rotating ring 7008, the driving block 7006, and the inclined end face 7007, the upward movement of the roller 7005 is driven; the four rotating driving blocks 7006 drive the inclined end face 7007 to gradually contact the corresponding roller 7005, and as the inclined end face 7007 continues to move, the roller 7005, the top block 7003, and the second insertion rod 7002 are forced to move upward. At this time, the second spring 7004 is forced to stretch, and the second insertion rod 7002 disengages from the inner cavity of the second jack 7001 at the bottom end, that is, the second insertion rod 7002 no longer limits the second jack 7001 at this time. At this time, the moving arm 5007 can move in a direction close to or away from the center of the seat body 5001 under the action of an external force; the brake release assembly further includes a plurality of arc-shaped grooves 7009 equidistantly opened along the circumference on the rotating ring 7008. Specifically, there are four groups of arc-shaped grooves 7009. The inner side wall of each arc-shaped groove 7009 is arc-shaped, and the arc of the inner side wall of the arc-shaped groove 7009 and the arc of the side wall of the rotating ring 7008 are concentric arcs. A plurality of fixing pins 7010 are equidistantly installed along the circumference on the upper surface of the seat body 5001. The number of fixing pins 7010 is the same as that of the arc-shaped grooves 7009, both are four groups, and the fixing pins 7010 are slidably embedded in the inner cavity of the arc-shaped grooves 7009. A toothed ring 7011 is installed on the inner side wall of the rotating ring 7008. A second rotating shaft 7012 is vertically and rotatably disposed on the upper surface of the seat body 5001. A gear 7013 is fixedly installed at the bottom end of the second rotating shaft 7012. The gear 7013 is meshed with the side wall of the toothed ring 7011. A fixing column 7015 is fixedly and vertically installed on the upper surface of the seat body 5001. A second extension seat 7016 is vertically installed at the top end of the fixing column 7015. The second rotating shaft 7012 rotatably penetrates through the second extension seat 7016. A coil spring 7017 is provided on the outer wall of the second rotating shaft 7012, and both ends of the coil spring 7017 are connected to the second rotating shaft 7012 and the second extension seat 7016 respectively. When an external force for rotation is applied to the second rotating shaft 7012, the coil spring 7017 can be elastically deformed, and when the driving force for rotating the second rotating shaft 7012 is removed, the second rotating shaft 7012 can be automatically reset, thereby realizing the reverse rotation and reset of the rotating ring 7008, ensuring that the driving blocks 7006 at all positions automatically disengage from below the corresponding top blocks 7003 at the same time, leaving enough space for the subsequent automatic descent of the second insertion rod 7002, and preventing the driving blocks 7006 from staying below the top blocks 7003 and affecting the downward movement of the second insertion rod 7002;Among them, a handle 7014 is installed at the top of the second rotating shaft 7012;

[0110] The braking unit 7 is used to make all the second insertion rods 7002 disengage from the limit of the second insertion holes 7001: turn the handle 7014 clockwise, causing the coil spring 7017 to be forced to undergo elastic deformation. The second rotating shaft 7012 and the gear 7013 are caused to rotate clockwise by the clockwise-rotating handle 7014, so as to cause the toothed ring 7011 and the rotating ring 7008 to rotate synchronously clockwise. At this time, under the limiting action of the fixed pin 7010, it is ensured that the arc-shaped groove 7009 and the rotating ring 7008 are always concentric with the seat body 5001 during rotation, that is, it is ensured that the rotation of the rotating ring 7008 will not be skewed. The rotating rotating ring 7008 causes the four groups of driving blocks 7006 circumferentially arranged on its upper surface to drive the inclined end faces 7007 to gradually contact the rollers 7005 at the corresponding positions. As the inclined end faces 7007 continue to move, the rollers 7005, the top blocks 7003, and the second insertion rods 7002 are forced to move upward. At this time, the second spring 7004 is forced to stretch, and the second insertion rods 7002 disengage from the inner cavity of the second insertion holes 7001 at the bottom end, that is, the second insertion rods 7002 no longer limit the second insertion holes 7001 at this time. The moving arm 5007 can move in the direction of approaching or departing from the center of the seat body 5001 under the action of an external force; the driving of the four groups of second insertion rods 7002 to disengage from the inner cavity of the second insertion holes 7001 can be realized synchronously, with unified driving power, ensuring the synchronism of the four groups of second insertion rods 7002 disengaging from the limit, and without individually operating the second insertion rods 7002, which saves more operation steps and improves the operation efficiency.

[0111] Through components such as the driving blocks 7006, the inclined end faces 7007, the rollers 7005, and the second spring 7004, the second insertion rods 7002 can be driven to move upward to disengage from the corresponding inner cavities of the second insertion holes 7001, so that the braking unit 7 can be disengaged from the limit of the moving arm 5007, ensuring that the moving arm 5007 automatically extends outward under the elastic force of the first spring 5010, so as to realize the outward movement of the support formwork 5014 supported by the arc-shaped supporting platform 5012 and the second arc-shaped plate 5013 at the outer end of the moving arm 5007, and realizing that the support formwork 5014 abuts against the inner side wall of the well hole 1003 to form a support structure.

[0112] The present invention also provides a construction method for a settlement-proof manhole cover support construction device, including the following steps:

[0113] Step 1: Grooving:

[0114] Align the position above the well hole 1003, and use earthwork machinery to excavate the roadbed 1001. Refer to Figure 1As shown, the roadbed 1001 is formed into a flared shape above the well hole 1003, and the diameter of the flared shape is larger than the diameter of the well hole 1003, and the bottom end of the flared shape and the top end of the well hole 1003 form a support platform 1002, and the support unit 3 is subsequently supported on the support platform 1002 to achieve the central support of the manhole cover system 2 above the well hole 1003;

[0115] Step 2: Anti-settlement support:

[0116] The support unit 3 is adjusted to a support height suitable for the support manhole cover seat 2001, and the support foot 3007 is made to fit the upper surface of the support platform 1002 to form a stable support environment for the cover plate 2002 in the vertical direction. With the help of the support unit 3, a more stable support force is provided for the cover plate 2002, which effectively resists factors such as repeated rolling of vehicles and loose soil around the well, avoids the cover plate 2002 from sinking and settling, maintains the flatness of the road, ensures the safe and smooth passage of vehicles and pedestrians, and meets the requirements of stable use of the manhole cover and flush integration with the road;

[0117] Step 3: Internal support:

[0118] The base 5001 is connected to the well hole 1003 by using the hanging assembly 4, and the brake unit 7 is adjusted to adjust all the second plug rods 7002 to be out of the corresponding second plug hole 7001 cavity, that is, to adjust the movable arm 5007 to a state where it is not limited by the second plug rod 7002, and the power unit 6 is used to cause the four groups of first arc plates 5011, arc support platform 5012, and second arc plates 5013 to extend outward one by one and in sequence, and cause the four groups of support templates 5014 to press against the inner wall of the well hole 1003 one by one and in sequence, so as to realize the circumferential horizontal support of the inner wall of the well hole 1003;

[0119] Step 4: Uninstall:

[0120] After the support cycle is reached, the cover plate 2002 is opened and the support construction device is removed upward from the manhole cover seat 2001 to achieve the recycling of the device.

[0121] It is worth noting that in the present application, the support template 5014 is a steel template commonly used in the market for well hole support. The model of the above-mentioned existing components is not limited or elaborated on here. It has a good supporting effect on the well hole. The outer wall fits the inner wall of the well hole, and can provide horizontal support force for the inner wall of the well hole. At the same time, the positioned support template 5014 can form a stable assembly relationship with the manhole cover system 2, and provide additional key vertical support force for the manhole cover 2002. Combined with the synergistic effect of the support unit 3, it further strengthens the stable support for the manhole cover 2002, effectively preventing it from sinking downward, thereby creating a stable and reliable support environment for the manhole cover 2002.

[0122] In addition, the present application adopts a power-free dynamic support method, which has the following advantages:

[0123] It has the advantage of reducing the failure points: If a motor drive system is adopted, it includes many components such as motors, controllers, sensors, and circuits. Any malfunction in any link is likely to cause the entire drive system to fail. However, the support method driven by non-motor power abandons the complex motor drive system and adopts a mechanical support structure, greatly reducing the failure points of the system and significantly improving the reliability of the manhole cover support system.

[0124] It has the advantage of adapting to harsh environments: In some harsh usage environments, such as high temperature, high humidity, dust, chemical corrosion, etc., the electronic components and motors in the motor drive system are easily damaged, resulting in performance degradation or even failure. However, the support method driven by non-motor power has a simple structure, without complex electronic components and vulnerable parts, and can better adapt to harsh usage environments, ensuring that the manhole cover support system can operate stably and reliably under various harsh conditions.

[0125] It has the advantage of reducing the initial investment cost: To build a manhole cover support system driven by motor power, a series of equipment such as motors, controllers, sensors, and power sources need to be purchased, and the procurement costs of these equipment are relatively high. In addition, a certain amount of funds also need to be invested in system design, installation, commissioning, etc., further increasing the initial investment cost. However, the support method driven by non-motor power, due to its simple structure, does not require complex motor drive equipment and control systems, so the investment in equipment procurement and system construction is relatively small, effectively reducing the initial investment cost of the manhole cover support system.

[0126] It has the advantage of reducing the later operation and maintenance costs: During the operation of the manhole cover support system driven by motor power, a certain amount of electrical energy needs to be consumed, which will result in relatively high electricity bills in the long run. At the same time, due to factors such as wear and aging of motors, controllers, sensors, etc. during operation, regular maintenance and replacement of parts are required, which also increases the operation and maintenance costs of the system. However, the support method driven by non-motor power does not require external power input, so there is no problem of electrical energy consumption and electricity bills. At the same time, its structure is simple, without complex vulnerable parts, and the daily maintenance work is relatively less, only simple inspections and cleaning work need to be carried out regularly, greatly reducing the operation and maintenance costs of the manhole cover support system.

[0127] The advantage of no energy consumption: The motor drive system needs to continuously consume energy to realize its function. Whether it is a traditional motor drive system powered by fuel oil, gas, etc., or an electric drive system powered by electricity, it consumes a lot of energy resources. The support method without motor power drive uses a clever mechanical structure to achieve the support and anti-settling functions of the manhole cover. It does not require external energy input, so there is no energy consumption problem. It can effectively save energy resources, reduce dependence on energy supply, and has a significant energy-saving effect.

[0128] The working principle of the anti-sinking manhole cover support construction device in this embodiment is:

[0129] When supporting the manhole cover seat 2001, first adjust the support unit 3 to a supporting height suitable for supporting the manhole cover seat 2001: rotate the first positioning pin 3005 outward to cause it to disengage from the limit on the outer wall of the second support rod 3004, and adjust the total length of the second support rod 3004 and the first support rod 3002 through the relative movement of the second support rod 3004 in the sleeve 3003, so that the support foot 3007 fits the support platform 1002 to form a stable fitting state, and rotate the first positioning pin 3005 in the opposite direction into the inner cavity of the sleeve 3003 to cause the first positioning pin The free end of 3005 is tightly pressed against the side wall of the second support rod 3004, so that the second support rod 3004 after the position adjustment is stably limited in the sleeve 3003. At this time, the first support rod 3002 and the second support rod 3004 form a supporting whole. Referring to this step, the four sets of sleeves 3003 and the second support rod 3004 are adjusted respectively to ensure that the four sets of sleeves 3003 and the second support rod 3004 support the manhole cover seat 2001 in a horizontal state, and ensure that the manhole cover seat 2001 is flush with the upper surface of the road body 1, thereby achieving stable support of the manhole cover seat 2001 in the vertical direction;

[0130] When the support platform 1002 is tilted, adjust the position of the support foot 3007 so that its lower surface fits the upper surface of the support platform 1002: remove the second positioning pin 3009 from the corresponding inner cavity of the positioning hole 3008, drive the support foot 3007 to rotate relative to the bottom end of the second support rod 3004, until the lower surface of the support foot 3007 is adjusted to match the tilt angle of the support platform 1002, and insert the second positioning pin 3009 through the first rotating shaft 3006 and into the inner cavity of the positioning hole 3008 corresponding to the adjusted angle, so as to achieve the locking limit of the support foot 3007 on the second support rod 3004 after the adjusted angle;

[0131] Connect and assemble the support unit 5 with the manhole cover system 2: hang the free end of the U-shaped frame 4002 on the mounting seat 2005, and rotate the third positioning pin 4003 through the free end of the U-shaped frame 4002 to screw it into the threaded hole provided on the mounting seat 2005, thereby realizing the connection and assembly between the manhole cover system 2 and the support unit 5 through the hanging component 4;

[0132] The brake unit 7 is used to force all the second plug rods 7002 to disengage from the limit position of the second plug hole 7001: the handle 7014 is turned clockwise to force the coil spring 7017 to undergo elastic deformation, and the clockwise rotation of the handle 7014 causes the second shaft 7012 and the gear 7013 to rotate clockwise, so as to cause the gear ring 7011 and the rotating ring 7008 to rotate clockwise synchronously. At this time, under the limiting action of the fixing pin 7010, the arc groove 7009 and the rotating ring 7008 are always concentric with the seat body 5001 when rotating, that is, the rotation of the rotating ring 7008 is guaranteed not to be deflected, and the rotating rotating ring 7008 is 8 causes the four groups of driving blocks 7006 arranged circumferentially on the upper surface to drive the inclined end surface 7007 to gradually contact the roller 7005 at the corresponding position, and as the inclined end surface 7007 continues to move, the roller 7005, the top block 7003, and the second insertion rod 7002 are forced to move upward, at which time the second spring 7004 is forced to stretch, and the second insertion rod 7002 is separated from the inner cavity of the second plug hole 7001 at the bottom, that is, at this time the second plug rod 7002 no longer limits the second plug hole 7001, and at this time the movable arm 5007 can move towards or away from the center of the seat body 5001 under the action of external force;

[0133] The power unit 6 realizes the support of four sets of supporting templates 5014 on the inner wall of the well hole 1003: Figure 19 As shown, in the initial state, the second plug hole 7001 is located in the inner cavity of the seat body 5001, and the four groups of movable pins 5009 are all limited in the inner cavity of the second slide groove 5005. At this time, the first spring 5010 is in a forced compression state, and the second plug rod 7002 is separated from the inner cavity of the second plug hole 7001 at the corresponding position of the bottom end, and the free end of the bottom end of the second plug rod 7002 is in sliding contact with the upper surface of the movable arm 5007, and the second spring 7004 is in a forced tension state; the first plug rod 6015 is pulled out of the inner cavity of the first plug hole 6012, and the hand wheel 6013 is rotated counterclockwise to drive the second rotating rod 6005 to rotate counterclockwise synchronously. As the second rotating rod 6005 drives the limit plate 6006 During the counterclockwise rotation, the toggle pin 6008 gradually rotates to be embedded in the corresponding inner cavity of the strip groove 6003 at this time, and as the toggle pin 6008 continues to rotate counterclockwise, the turntable 6002 and the first rotating rod 6001 rotate clockwise until the toggle pin 6008 is separated from the inner cavity of the strip groove 6003. At this time, the turntable 6002, the first rotating rod 6001 and the circular turntable 5003 complete a 45-degree clockwise rotation. In addition, when the toggle pin 6008 is separated from the inner cavity of the strip groove 6003, the limit plate 6006 rotates to fit the side wall of the recessed portion 6004 at the corresponding position, thereby realizing the limit locking of the first rotating rod 6001 and the turntable 6002 after rotation;

[0134] Place one of the support templates 5014 into the corresponding arc-shaped support platform 5012 and the second arc-shaped plate 5013 on the right side, so that the arc-shaped slot 5015 at the bottom of the support template 5014 is sleeved on the arc-shaped support platform 5012. After sleeving, the support template 5014 is stably connected under the limitation of the arc-shaped support platform 5012 and the second arc-shaped plate 5013; during the process of the above-mentioned first rotating rod 6001 rotating clockwise by 45 degrees, since the moving arm 5007 is perpendicular to and slides through the seat body 5001 and the ring body 5002, with the elastic force of the first spring 5010 on the right side, it can promote the moving pin 5009 on the right side to enter the inner cavity of the first chute 5004 along the U-shaped groove 5006. At this time, the moving arm 5007 on the right side drives the second jack 7001 thereon to move out of the seat body 5001 to the right until the seat body 5001 moves to the lower part of the second plug rod 7002 of this group on the right side. Under the elastic force of the second spring 7004, the second plug rod 7002 is driven to move downward and insert into the inner cavity of the second jack 7001, that is, the position of the moving arm 5007 extending out of the right side wall of the seat body 5001 is locked, ensuring that the support template 5014 placed at the free end of the moving arm 5007 closely fits the inner wall of the well hole 1003, forming a stable support in the horizontal direction of the well hole 1003, and at the same time ensuring that the overall support equipment is in a stable state in this support state, that is, in the Figure 15 and Figure 8 state;

[0135] After the support formwork 5014 on the right side is attached to the inner wall of the well hole 1003, continue to adjust the power unit 6 to prompt the support formworks 5014 on the front side, left side, and rear side to be attached to the inner wall of the well hole 1003 one by one in sequence. Finally, a circumferentially closed support structure is formed on the inner wall of the well hole 1003, forming a stable support whole with the manhole cover system 2. Through the intermittent 45-degree rotation of the circular turntable 5003 and the locking after rotation, and the automatic limit locking of the moving arm 5007 after moving outward under the action of the braking unit 7, the support formworks 5014 on the right side, front side, left side, and rear side are attached to the well hole 1003 one by one in sequence to complete the support construction requirements. It can not only meet the requirement of completely attaching the circumferential side wall of the well hole 1003 for support, but also avoid the interference generated when the adjacent two support formworks 5014 move outward synchronously compared with the way that the four groups of support formworks 5014 move outward synchronously, and the design is more reasonable. On the contrary, by means of the moving arm 5007 on the rear side moving toward the middle, the rear arc support platform 5012 and the second arc plate 5013 move toward the direction close to the center of the seat body 5001, so as to realize the rear support formwork 5014 moving toward the middle and separating from the inner wall of the well hole 1003. Pulling the support formwork 5014 upward to make the arc slot 5015 separate from the outer wall of the rear arc support platform 5012 can realize the disassembly of the rear support formwork 5014. Similarly, subsequently, through the continuous intermittent rotation of the first rotating rod 6001, the disassembly of the support formworks 5014 on the left side, front side, and right side is completed one by one. When disassembling the support formworks 5014 on the rear side, left side, front side, and right side one by one in sequence, the situation of interference generated when the adjacent two support formworks 5014 move toward the middle synchronously for disassembly can be avoided.

[0136] After the support is completed, reinsert the first insertion rod 6015 into the first insertion hole 6012 to realize the synchronous locking and positioning of components such as the second rotating rod 6005, the first rotating rod 6001, the circular turntable 5003, the moving arm 5007, the rear arc support platform 5012, the second arc plate 5013, and the support formwork 5014 after the support, ensuring that the support device is in a stable locked state and will not continue to rotate under the action of external forces.

[0137] Place the frame body 2007 vertically into the U-shaped frame 4002, and rotate the frame body 2007 to prompt the installation block 2006 to enter the bottom end of the inner cavity of the mounting seat 2005 along the inner cavity of the mounting seat 2005. With the help of the mounting seat 2005, the frame body 2007 is hung in the manhole cover seat 2001, and the setting of the U-shaped frame 4002 ensures the normal installation of the frame body 2007 and will not cause installation interference.

[0138] The present invention exhibits many beneficial effects in the aspect of preventing the settlement and supporting of manhole covers: Firstly, aiming at the problem that manhole covers are prone to settlement due to repeated vehicle rolling and loosening of the soil around the well during long-term use, by setting the first support rod 3002 and the second support rod 3004, a stable supporting force is provided for the cover plate 2002, effectively resisting these factors, avoiding settlement and loosening, maintaining the road surface flat, ensuring the safe and smooth passage of vehicles and pedestrians, meeting the requirements of stable use of the manhole cover and being flush with the road, and the four groups of support units 3 are evenly distributed along the circumferential direction of the manhole cover seat 2001, and the constructed support system can provide equal support in all directions, resist external forces, and avoid sunken settlement; in terms of flexibility, it has the characteristic of flexible adjustment of the total length of the first support rod 3002 and the second support rod 3004, and can accurately control the support height of the manhole cover system 2 within a reasonable range, so that the manhole cover system 2 can be installed flush with the roadbeds 1001 of different heights, not only ensuring stable support to prevent settlement, but also being able to flexibly adapt to various situations; in terms of structural design, the setting of the second support rod 3004, the first rotating shaft 3006, and the support feet 3007, with the surface contact between the support feet 3007 and the upper surface of the support platform 1002, avoids the piercing of the second support rod 3004, provides reliable support for the second support rod 3004 and the first support rod 3002, enhances the support stability of the manhole cover system 2, and at the same time, the positioning holes 3008, the second positioning pins 3009, and the first rotating shaft 3006 can flexibly adjust and lock the inclination angle of the support feet 3007 relative to the second support rod 3004 to ensure close fitting support; in terms of connection, the setting of the hanging component 4 and the U-shaped frame 4002 avoids installation interference, ensures the integrity of the system and the smooth assembly process, and the use of components such as the circular turntable 5003 and the first chute 5004 enables the support template 5014 to move along the inner cavity, realizing retraction and disassembly inward or extension and support outward, which can not only be reused, but also form an annular support mold that fits the inner wall of the well hole 1003 when extending outward, preventing the material on the inner wall of the well hole 1003 from falling, improving the construction quality and the smoothness of the process; in terms of automatic operation, the U-shaped groove 5006 and the first spring 5010 enable the moving pin 5009 to automatically move in the inner cavity of the first chute 5004 or the second chute 5005, and through the rotation of the circular turntable 5003, the support templates 5014 are displaced one by one in sequence, with simple operation, high efficiency, reduced labor costs, and the advantage of the unified driving force of the circular turntable 5003 driving the displacement of the support templates 5014 is significant, saving power energy, enhancing the system stability, and avoiding component interference; in addition, the unique side wall structure of the support template 5014 ensures the independence and smoothness of the operation, shortens the construction and maintenance time, forms a highly stable support structure through the support and limitation of components such as the first arc plate 5011 on the support template 5014, improves the anti-settlement effect, extends the service life of the facilities, facilitates inspection and maintenance, and the driving and limiting components can achieve intermittent rotation, automatic displacement, and stable locking, which is convenient for operation, and synchronous driving can improve the operation efficiency and the displacement accuracy is higher;Finally, the non-electric power support method adopted by the present invention replaces the complex motor drive system with a mechanical structure, reduces the failure points, has high reliability, is suitable for harsh environments, reduces the initial investment cost, and ensures the stable and reliable operation of the system.

[0139] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An anti-settlement manhole cover support construction device, comprising a road main body (1), characterized in that: A manhole cover system (2) is provided inside the road body (1). A support unit (3) for preventing the settlement of the manhole cover system (2) is provided below the manhole cover system (2). Four groups of the support units (3) are provided, and the four groups of the support units (3) are arranged at equal intervals along the circumferential direction of the manhole cover system (2). Each group of the support units (3) includes a connecting seat (3001). One end of a first support rod (3002) is rotatably connected inside the connecting seat (3001). A socket (3003) is fixedly sleeved and installed at the other end of the first support rod (3002). A second support rod (3004) is slidably embedded inside the socket (3003). The second support rod (3004) is arranged parallel to the first support rod (3002). A first positioning pin (3005) is threadedly penetrated through the socket (3003), and the free end of the first positioning pin (3005) extends into the inner cavity of the socket (3003) and abuts against the side wall of the second support rod (3004). Each group of the support units (3) further includes a first rotating shaft (3006) penetrating and installed at the bottom end of the second support rod (3004). A support leg (3007) is rotatably connected to the outside of the first rotating shaft (3006). The support leg (3007) is U-shaped. A plurality of positioning holes (3008) are formed in the support leg (3007) along its width direction. A second positioning pin (3009) is penetrated through the first rotating shaft (3006), and the free end of the second positioning pin (3009) is inserted into one of the positioning holes (3008). A support unit (5) is provided below the manhole cover system (2). The support unit (5) includes a seat body (5001). A ring body (5002) is installed inside the seat body (5001). The ring body (5002) is concentric with the seat body (5001). A circular turntable (5003) is rotatably provided in the middle of the seat body (5001). A first sliding groove (5004), a second sliding groove (5005), and a U-shaped groove (5006) are respectively formed on the circular turntable (5003). The first sliding groove (5004) is located outside the second sliding groove (5005), and both the first sliding groove (5004) and the second sliding groove (5005) are concentric with the circular turntable (5003). The second sliding groove (5005), the U-shaped groove (5006), and the first sliding groove (5004) form a smoothly connected and smooth sliding groove channel that is internally and externally connected. Wherein, the U-shaped groove (5006) is U-shaped, and the U-shaped opening of the U-shaped groove (5006) is arranged in a direction away from the center of the circular turntable (5003). The support unit (5) further includes four groups of supporting components, and the four groups of supporting components are arranged at equal intervals along the circumferential direction on the side wall of the seat body (5001). Each of the supporting assemblies includes a moving arm (5007) that vertically and slidably penetrates the side walls of the seat body (5001) and the ring body (5002). One end of the moving arm (5007) located inside the cavity of the seat body (5001) is equipped with a moving block (5008). A moving pin (5009) is vertically installed at the bottom end of the moving block (5008). The moving pin (5009) is slidably embedded in the inner cavity of the smooth chute channel formed by the inner and outer connection of the second chute (5005), the U-shaped groove (5006), and the first chute (5004). One end of the moving arm (5007) extending out of the side wall of the seat body (5001) is equipped with a first arc-shaped plate (5011). An arc-shaped supporting platform (5012) is installed on the side of the first arc-shaped plate (5011) facing away from the moving arm (5007). A second arc-shaped plate (5013) is installed on the arc-shaped supporting platform (5012). A first spring (5010) is sleeved on the moving arm (5007), and both ends of the first spring (5010) are respectively connected to the moving block (5008) and the side wall of the ring body (5002); Among them, the side walls of the first arc-shaped plate (5011), the arc-shaped supporting platform (5012), and the second arc-shaped plate (5013) are all set to be arc-shaped, and the arcs of the side walls of the three are concentric arcs; Inner support assemblies are detachably arranged on the four groups of the supporting assemblies respectively; Each of the inner support assemblies includes a support formwork (5014). An arc-shaped slot (5015) is opened at the bottom end of the support formwork (5014). The arc-shaped slot (5015) is sleeved on the second arc-shaped plate (5013) from top to bottom. The outer side wall of the support formwork (5014) is arranged corresponding to the outer side wall of the arc-shaped supporting platform (5012) up and down; Among them, the left and right side walls of each support formwork (5014) are inclined from the inner arc to the outer arc direction to form intersecting edges, and the arc length of the inner arc of the support formwork (5014) is less than the arc length of its outer arc.

2. The anti-settlement manhole cover support construction device according to claim 1, characterized in that: The circular turntable (5003) is intermittently rotated and locked after rotation by a power unit (6); The power unit (6) includes a first rotating rod (6001) that rotates and is vertically connected to the middle of the upper surface of the circular turntable (5003). The top end of the first rotating rod (6001) extends out of the upper surface of the base body (5001) and is fixedly installed with a turntable (6002). A plurality of strip-shaped grooves (6003) and recessed parts (6004) are respectively formed on the side wall of the turntable (6002). The number of the strip-shaped grooves (6003) and the recessed parts (6004) is the same, and the strip-shaped grooves (6003) are arranged between two adjacent recessed parts (6004). A second rotating rod (6005) is rotatably and vertically connected to the upper surface of the base body (5001). A limiting disk (6006) and a shifting rod (6007) are fixedly installed on the second rotating rod (6005). The side wall of the limiting disk (6006) is rotatably attached to the side wall of one of the recessed parts (6004). The shifting rod (6007) is arranged below the limiting disk (6006). A shifting pin (6008) is vertically installed at one end of the shifting rod (6007) away from the second rotating rod (6005). The shifting pin (6008) is rotatably embedded in the inner cavity of one of the strip-shaped grooves (6003). Wherein, a pointer (6009) is installed at the top end of the first rotating rod (6001), and the pointer (6009) is collinear with the central axis of one of the moving arms (5007).

3. The anti-settlement manhole cover support construction device according to claim 2, characterized in that: The power unit (6) further includes a remote operation assembly; The remote operation assembly includes a support arm (6010) that is vertically and fixedly installed on the upper surface of the base body (5001). A plurality of first extension seats (6011) are arranged on the left side wall of the support arm (6010). The second rotating rod (6005) passes through the outer wall of the first extension seat (6011) in the vertical direction, and the second rotating rod (6005) is rotatably connected to the first extension seat (6011). A first jack (6012) is formed on the upper surface of the topmost first extension seat (6011). The top end of the second rotating rod (6005) extends out of the first extension seat (6011) and is installed with a handwheel (6013). A convex block (6014) is installed on the side wall of the handwheel (6013). A first insertion rod (6015) is vertically arranged through the convex block (6014), and the bottom end of the first insertion rod (6015) is insertably embedded in the inner cavity of the first jack (6012).

4. The anti-settlement manhole cover support construction device according to claim 1, characterized in that: A braking unit (7) is arranged above the base body (5001). The braking unit (7) includes a plurality of limiting components, and each group of limiting components is correspondingly arranged with each moving arm (5007); Each of the limiting components includes a second jack (7001) formed on the moving arm (5007), and further includes a second plug rod (7002) that slidably penetrates through the upper surface of the seat body (5001) in the vertical direction. The bottom end of the second plug rod (7002) is insertably embedded in the inner cavity of the second jack (7001). A top block (7003) is vertically installed at the top end of the second plug rod (7002). A second spring (7004) is sleeved on the second plug rod (7002), and both ends of the second spring (7004) are respectively connected to the upper surface of the seat body (5001) and the lower surface of the top block (7003).

5. The anti-settlement manhole cover support construction device according to claim 4, characterized in that: The braking unit (7) further includes a brake release component; The brake release component includes a rotating ring (7008) rotatably provided on the upper surface of the seat body (5001). The rotating ring (7008) is concentric with the center of the seat body (5001). A plurality of driving blocks (7006) are equidistantly arranged along the circumferential direction on the upper surface of the rotating ring (7008). An inclined end face (7007) is provided on the upper surface of each driving block (7006). A roller (7005) is rotatably provided on the lower surface of the top block (7003). The inclined end face (7007) is arranged corresponding to the position of the roller (7005). By the clockwise rotation of the rotating ring (7008), the driving blocks (7006), and the inclined end face (7007), the upward movement of the roller (7005) is driven; The brake release component further includes a plurality of arc-shaped grooves (7009) equidistantly formed along the circumferential direction on the rotating ring (7008). The inner side wall of each arc-shaped groove (7009) is arc-shaped, and the arc of the inner side wall of the arc-shaped groove (7009) and the arc of the side wall of the rotating ring (7008) are concentric arcs. A plurality of fixing pins (7010) are equidistantly installed along the circumferential direction on the upper surface of the seat body (5001). The number of the fixing pins (7010) is the same as that of the arc-shaped grooves (7009), and the fixing pins (7010) are slidably embedded in the inner cavity of the arc-shaped grooves (7009). A toothed ring (7011) is installed on the inner side wall of the rotating ring (7008). A second rotating shaft (7012) is vertically and rotatably provided on the upper surface of the seat body (5001). A gear (7013) is fixedly installed at the bottom end of the second rotating shaft (7012). The gear (7013) is meshed with the side wall of the toothed ring (7011). A fixing column (7015) is fixedly and vertically installed on the upper surface of the seat body (5001). A second extension seat (7016) is vertically installed at the top end of the fixing column (7015). The second rotating shaft (7012) rotatably penetrates through the second extension seat (7016). A coil spring (7017) is provided on the outer wall of the second rotating shaft (7012), and both ends of the coil spring (7017) are respectively connected to the second rotating shaft (7012) and the second extension seat (7016); Wherein, a handle (7014) is installed at the top end of the second rotating shaft (7012).

6. The anti-sinking manhole cover support construction device according to claim 1, characterized in that: The road body (1) comprises a roadbed (1001), a support platform (1002) and a well hole (1003), wherein the support platform (1002) is lower than the roadbed (1001), and the well hole (1003) is a columnar hole; The manhole cover system (2) comprises a manhole cover seat (2001), a cover plate (2002) being rotatably buckled on the manhole cover seat (2001), a first recessed edge (2003) and a second recessed edge (2004) being arranged on the inner side of the manhole cover seat (2001), the upper surfaces of the manhole cover seat (2001), the first recessed edge (2003) and the second recessed edge (2004) being arranged in steps with a downward trend, a plurality of mounting seats (2005) being equidistantly arranged on the inner side wall of the manhole cover seat (2001) along the circumferential direction, a mounting block (2006) being embedded in the mounting seat (2005), a frame (2007) being installed on the mounting block (2006), and the center of the frame (2007) being arranged concentrically with the center of the manhole cover seat (2001); The manhole cover system (2) and the support unit (5) are connected via a hanging component (4), and the hanging component (4) comprises a plurality of groups of hanging components; Each group of the hanging components comprises a vertical arm (4001), the vertical arm (4001) is fixed and vertically mounted on the upper surface of the base body (5001), a U-shaped frame (4002) is mounted on the top end of the vertical arm (4001), the U-shaped frame (4002) is arranged in a U shape, a third positioning pin (4003) is penetrated and rotatably arranged at one end of the U-shaped frame (4002) away from the vertical arm (4001), a threaded hole adapted to the third positioning pin (4003) is opened on the mounting base (2005), and the bottom end of the third positioning pin (4003) is threadedly embedded in the threaded hole on the mounting base (2005).

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