Energy-saving and environment-friendly lifting manhole device and construction method

Abstract

The present invention relates to an energy-saving and environment-friendly lifting manhole device and construction method, the device comprises a U-shaped support rod, a hemispherical end threaded support rod, a threaded support sleeve and a manhole ring, upper and lower protective covers, a foldable anti-fall platform net, etc. It is fixed to the upper part of the reinforced concrete manhole body through a flange plate, and connected to the manhole ring after being connected by three U-shaped support rods, hemispherical end threaded support rods, and threaded support sleeves at an angle of 120 degrees to each other. A manhole cover is conventionally arranged on the manhole ring, and the hemispherical end threaded support rod is rotated to lift and adjust the height of the manhole ring and the inclination in any direction, so that the plane composed of the manhole ring and the manhole cover can adapt to the geometric dimensions of the ground surface and effectively connect with the surrounding buildings. The present invention has the advantages of simple structure, simple method, safety, economy, easy installation, positioning accuracy reaching millimeter level, stability, anti-theft, energy saving, environmental protection, low maintenance cost, ensuring road flatness, effectively ensuring the function of urban roads, improving and ensuring the social operation efficiency of towns, etc.

Description

Technical Field

[0001] The invention relates to the fields of roads, municipal administration, yards and pipelines of civil engineering structures, and in particular to an energy-saving and environment-friendly lifting manhole device and a construction method. Background Art

[0002] Manholes or pipeline inspections are important pathways connecting pipelines to the ground. They are important structures to ensure the normal functioning of pipelines and to carry out operation, maintenance, inspection, repair, monitoring, and surveillance. At the same time, when connected to ground buildings, they also need to have the functions of ground buildings. If the manhole structure settles and the surface concrete structure is damaged, it will cause displacement, settlement, and various diseases in the buildings within a certain range around the manhole structure, which will inevitably affect the normal functioning of the ground buildings and require enclosure repair or reconstruction. At the same time, if the structures around the manhole sink or the top surface of the manhole cannot be smoothly and continuously connected to the surrounding structures during construction, there will be a height difference between the manhole and the buildings around the manhole structure. It seriously affects the function of the composite structure composed of manholes and ground buildings; once the bearing capacity of ground buildings is improved according to the needs of social development, the elevation is raised or lowered, or the manhole is repaired, it will be necessary to remove the manhole ring and cover, rebuild the manhole body, increase the input of materials, machinery and labor, and the construction noise, exhaust gas, dust, stockpiling, concrete slurry dripping, and cleaning will affect environmental protection; and in order to repair the damaged ground buildings or surrounding structures in use, it is necessary to enclose a certain area of ​​the site to ensure safety and have space for repair operations, so that the functions of this part of the building need to be merged, forming a functional bottleneck effect, reducing the number and efficiency of services.

[0003] The above situation is relatively common in the manhole structure of municipal roads. Manholes are important engineering facilities of municipal engineering. In the part connected with the road, it is necessary to have the common functions of the road and the inspection well. Since urban roads mostly use asphalt pavement structure, manholes are generally rigid structures. According to the construction sequence, pipelines and manhole structure projects are constructed first, and then road earthwork, road surface and other ancillary projects are constructed. The earthwork behind the structure around the manhole and the various structural layers of the road surface are difficult to compact, and there is uneven settlement after construction, and the manhole settles under the action of concentrated vehicle loads, resulting in the geometric dimensions, elevations, slopes, and flatness of the manholes and surrounding roads. The design requirements cannot be met, or different degrees of settlement differences appear in a short period of time after operation. Vehicles will slow down when approaching the manhole. If the number of manholes with settlement differences on the road reaches a certain number, the travel speed of the entire road will be greatly reduced, affecting the performance of the road design speed function and the traffic flow capacity, weakening and reducing the city's operation and efficiency functions, wasting social resources, and actually increasing the cost of urban operation. The leveling, continuity, and smooth connection of municipal road manholes with surrounding roads and the prevention of early settlement and damage of manholes and building structures around manholes are issues that need to be urgently addressed in municipal engineering.

[0004] At the same time, due to the continuous development and change of the form of manhole structure in the process of urban construction and development, there are manhole covers directly installed on exposed reinforced concrete manhole covers; there are buried reinforced concrete manhole covers, and reinforced concrete manhole rings and manhole covers are installed on the manhole covers; there are manhole covers directly installed on circular reinforced concrete manhole walls; there are integrated steel manhole rings and manhole covers directly installed on circular manhole walls or reinforced concrete manhole covers. The maintenance or partial renewal of manholes can only be based on the original structure. Replace the new manhole structure components as much as possible. Its characteristics are After the construction of the manhole structure is completed, the elevation and the slope and slope direction of the surface are fixed values. If the elevation or surface slope and slope direction need to be adjusted, the reinforced concrete manhole cover and steel manhole ring and manhole cover need to be lifted, and the elevation, slope and slope direction of the manhole wall need to be chiseled or raised, and the fixings need to be reconstructed. Moreover, due to the existence of construction errors, it is extremely difficult to ensure that the geometric dimensions of the road surface are completely consistent and matched. The repair effect is not good, and the road construction time is long, which not only affects the operation of urban traffic, but also puts great pressure on energy conservation and environmental protection. If the road is upgraded and renovated, the road elevation is raised or lowered, and the elevation and slope of the manhole need to be rebuilt. The current problems of the connection between the manhole structure and the road and the settlement difference cannot be eliminated. In addition, the manholes on the built roads mainly sink in the early stage and have problems such as sinking and cracking of the surrounding structural projects. The top surface of the manhole cover is higher than the road surface, and the connection with the surrounding projects is not smooth. The vehicle jumps, and it is difficult to repair and adjust the elevation of the road reconstruction. The maintenance and road reconstruction costs are high during the life cycle, which affects the flatness of urban roads and the efficiency of urban operations.

[0005] In order to improve the quality of manhole construction, effectively curb the occurrence of manhole diseases, improve the level of urban infrastructure, reduce the operation and maintenance costs of manholes, and promote green development of urban construction, the Ministry of Housing and Urban-Rural Development issued the "Announcement of the Ministry of Housing and Urban-Rural Development on the Issuance of the "Catalogue of Construction Technologies, Equipment and Materials that Endanger Production Safety in Housing and Municipal Infrastructure Projects (First Batch)" on December 14, 2021, stipulating that the use of sewage inspection well brickwork technology is prohibited; on November 10, 2022, the "Notice of the General Office of the Ministry of Housing and Urban-Rural Development on Soliciting Public Opinions on the "Catalogue of Prohibited and Restricted Use Technologies for Housing and Municipal Infrastructure Projects (2022 Edition) (Draft for Comments)" stated that manhole covers made of steel bars and concrete materials, that is, concrete manhole cover technology, is prohibited in motor vehicle lanes. Summary of the invention

[0006] In order to solve the above problems, the present invention provides an energy-saving and environmentally friendly lifting manhole device and construction method, which can adjust the elevation and slope of the integral steel manhole ring and manhole cover of the manhole, and keep the consistency and continuous connection of the elevation, flatness and slope required by the top of the manhole cover with the surrounding buildings at any time. It has a simple structure, a simple method, economy, easy installation, positioning accuracy reaching millimeter level, stability, anti-theft, energy saving, environmental protection, low maintenance cost, ensuring road flatness, effectively ensuring the function of urban roads, and improving and ensuring the social operation efficiency of towns.

[0007] The technical solution of the present invention is as follows:

[0008] An energy-saving and environment-friendly lifting manhole device, comprising a U-shaped support rod, a hemispherical end threaded support connecting rod, a threaded support sleeve, a manhole ring, upper and lower protective covers and upper and lower support rods, and a foldable anti-fall platform net;

[0009] The U-shaped support rod comprises a base, a lower protective cover and a lower support rod, and a bolt hole for connecting with a flange plate pre-buried on the top of the cement reinforced concrete manhole body is reserved on the base;

[0010] The hemispherical end threaded support connecting rod comprises a spacing block and a torsion block; a concave lower fastening connecting nut is installed on the hemispherical end threaded support connecting rod and is connected to the U-shaped support rod; a concave upper fastening connecting nut, a spring washer, and a limit nut are combined and connected to the threaded support sleeve;

[0011] The threaded support sleeve comprises a well collar, an upper protective cover and an upper support rod connected thereto; the well collar is connected to the threaded support sleeve, the upper protective cover is connected to the well collar, and the upper support rod is connected to the threaded support sleeve and the upper protective cover.

[0012] The foldable anti-fall platform net is placed on the top of the cement reinforced concrete manhole body or on the flange plate, and is a foldable mesh structure. Its function is to provide a working platform for adjusting the lifting of the manhole ring and prevent pedestrians from falling when the manhole cover is accidentally opened.

[0013] Furthermore, the three height adjustment support structural members composed of the U-shaped support rod, the hemispherical end threaded support rod and the threaded support sleeve are arranged at an angle of 120 degrees to each other, which is convenient for efficiently adjusting the lifting and lowering of the manhole and better transmitting the road live load. The base of the U-shaped support rod is connected to the flange plate set on the top well ring of the cement reinforced concrete manhole body, and the threaded support sleeve is connected to the well ring.

[0014] Furthermore, the base of the U-shaped support rod can be square or circular, with no less than 4 bolt holes left in the base, and a lower protective cover is connected to the outside. The lower protective cover is arranged with a flange at a non-base position to connect with a flange set on the top ring of the cement reinforced concrete manhole body. The upper part of the U-shaped support rod is a circular opening that is larger at the top and smaller at the bottom. The bottom of the opening is hemispherical, and there are threads on the outer side of the upper part. A lower support rod is arranged between the U-shaped support rod and the lower protective cover. The support rod is used to strengthen the strength of the lower protective cover and prevent deformation. The upper part of the U-shaped support rod is a large opening at the top and a small opening at the bottom to ensure that the hemispherical end threaded support connecting rod can tilt freely when adjusting the slope of the ring. The hemispherical shape of the bottom of the U-shaped support rod opening fits tightly with the hemispherical end of the hemispherical end threaded support connecting rod.

[0015] The U-shaped support rod is made into an integral part with the base, the lower protective cover and the lower support rod; the U-shaped support rod can also be made into an integral part with the base and the lower support rod, and at the same time, a screw rod connected to the lower flange of the lower protective cover is made on the outer side of the base, and no less than 4 bolt connection thread holes are set at the corresponding positions of the lower protective cover at the connection with the lower support rod. The other end of the lower support rod adopts a flange plate made with a curvature suitable for the lower protective cover, which is connected to the thread hole of the lower protective cover through the screw rod.

[0016] Furthermore, the lower part of the hemispherical end threaded support connecting rod is a hemisphere, a spacing block is set at the top surface of the U-shaped support rod, a regular polygonal twist block is set at a distance above the spacing block, and threads are made on the support connecting rod above the regular polygonal twist block.

[0017] The height of the torsion block is smaller than that of the spacing block; the opening of the concave lower fastening nut can pass through the torsion block, so as to be connected with the U-shaped support rod. The top surface of the spacing block is made into an arc, and the top of the groove of the concave lower fastening nut is made to be consistent with the arc of the top surface of the spacing block, so that the spacing block and the concave lower fastening nut are closely attached when fastened; the hemispherical end threaded support connecting rod, the torsion block and the spacing block are made into an integral component.

[0018] Furthermore, the threaded support sleeve has an internal hollow circular hole with a thread arranged inside the circular hole, a thread is made on the outer side of the lower end, and the other end is connected to the well ring. The threaded support sleeve is provided with a scale from the outer side of the connection with the well ring to the thread on the outer side of the lower end section.

[0019] An upper protective cover is arranged on the outer side of the well ring, and an upper support rod is arranged between the threaded support sleeve and the upper protective cover. The support rod is used to strengthen the strength of the upper protective cover and prevent deformation.

[0020] Furthermore, the upper protective cover is outside and the lower protective cover is inside, and a certain distance is set between the upper and lower protective covers. Waterproof sealant is used to fill and seal the seams to prevent water on the manhole cover from passing through the gaps and seeping into the road surface or roadbed through the distance set between the upper and lower protective covers, thereby affecting the road strength; a certain distance is set between the upper and lower protective covers to ensure that there is a certain space for smoothly adjusting the slope of the manhole ring surface without affecting the stability of the structural objects around the manhole.

[0021] The present invention also relates to a construction method for a new energy-saving and environment-friendly lifting manhole device, which is applicable to the above-mentioned device and comprises the following steps:

[0022] Step (1): On the top surface of the installed steel bars and formwork for the cast-in-situ cement reinforced concrete manhole body, accurately lay out the flange of the U-shaped support rod base and the flange of the lower protective cover, install the flange of the base and the flange of the protective cover, and fix them to the steel bars and formwork of the manhole body. During the pouring of the cement concrete for the manhole body, the accuracy of the position of each flange should be observed to ensure the correct position, or bolt holes for each flange should be reserved.

[0023] For prefabricated reinforced concrete components of manhole bodies, bolt holes for each flange should be reserved in advance.

[0024] Step (2): Check the position of the reserved bolt holes. If there is any deviation, expand or re-drill the holes. Clean the dust in the holes, inject the anchor slurry, insert the bolts of each flange into the anchor slurry in the bolt holes, and calibrate the fixing position and elevation.

[0025] Clean all flanges embedded in cement reinforced concrete of the cast-in-place manhole body.

[0026] Step (3): Insert the flange bolts anchored on the cement reinforced concrete of the manhole body through the reserved holes of the base and lower protective cover flanges, tighten the nuts of the bolts to firmly connect the base and lower protective cover to the manhole body through the flanges, and install the foldable anti-fall platform net at the same time.

[0027] Step (4): Select a flat area in a processing workshop or construction site, turn the well ring over so that the lower end of the threaded support sleeve faces upward, insert the concave lower fastening nut from the threaded end of the hemispherical end threaded support connecting rod, then screw in the limit nut, insert the spring washer, and finally screw in the concave upper fastening nut. Screw the hemispherical end threaded support connecting rod into the thread of the lower end of the threaded support sleeve, and then reverse the concave upper fastening nut to connect the hemispherical end threaded support connecting rod to the threaded support sleeve.

[0028] Step (5): transport the hemispherical end threaded support link and the threaded support sleeve assembled and connected in the on-site processing workshop to the construction site, unload them, and select a flat area on the construction site to flip the assembled components to the positive direction of the well ring, and insert the hemispherical end of the hemispherical end threaded support link into the opening of the U-shaped support rod.

[0029] Step (6): After rotating the concave upper fastening nut to separate it from the threaded support sleeve, rotate the torsion block to adjust the elevation and slope of the top surface of the well ring to be flush with the top of the road base, screw the concave upper fastening nut into the outer thread of the threaded support sleeve and tighten it, then rotate the limit nut and tighten it with the spring washer, finally rotate the concave lower fastening nut to fasten the U-shaped support rod and the hemispherical end threaded support connecting rod through the spacer block; cover the well cover.

[0030] Step (7): construct the road base, and then construct various pavement structural layers on the road base and the manhole cover.

[0031] Step (8): Locate and accurately determine the center and edge positions of the manhole. Use a cutting machine to accurately cut along the edge line, remove the pavement layer paved on the manhole ring and clean it. Use a 5-meter ruler as a reference to measure the distance between the manhole ring and the top surface of the manhole cover and the top surface of the road surface, and open the manhole cover.

[0032] Step (9): Rotate and loosen the limit nut, then screw the concave upper fastening nut out of the outer thread of the threaded support sleeve, and then rotate and loosen the concave lower fastening nut. According to the measured rising height, refer to the scale on the threaded support sleeve, rotate the twist block to adjust the elevation and slope of the top surface of the well ring to be flush with the top surface of the road surface, and use a 5-meter ruler to check the flatness of the top surface of the well ring and the well cover with the top surface of the road surface and the longitudinal and transverse slopes. When they match, screw the concave upper fastening nut into the outer thread of the threaded support sleeve and tighten it, then rotate the limit nut, tighten and limit it with the spring washer, and finally rotate the concave lower fastening nut to fasten the U-shaped support rod to the hemispherical end threaded support connecting rod through the spacing block.

[0033] Step (10): Use waterproof sealant to fill and seal the gap between the upper protective cover and the lower protective cover, and cover the manhole cover; use caulking material to fill the small gap between the manhole ring and the top surface of the road surface.

[0034] Furthermore, a construction method for maintaining an energy-saving and environmentally friendly manhole device elevation raising and lowering includes the following steps:

[0035] Step (1): Using a 5-meter ruler as a reference, measure the distance between the manhole ring and the top surface of the manhole cover and the surrounding asphalt road surface, and open the manhole cover.

[0036] Step (2): Remove the waterproof sealant.

[0037] Step (3): rotate and loosen the limit nut, then screw the concave upper fastening nut out of the outer thread of the threaded support sleeve, and then rotate and loosen the concave lower fastening nut. Determine the rising or falling height of the well ring according to the 5-meter ruler. Compare it with the scale on the threaded support sleeve, rotate the twist block to adjust the elevation and slope of the well ring top surface to be flush with the road surface, and use a 5-meter ruler to check the flatness of the well ring and the top surface of the manhole cover with the road surface. When the longitudinal and transverse slopes are consistent, screw the concave upper fastening nut into the outer thread of the threaded support sleeve and tighten it. Then rotate the limit nut and tighten it with the spring washer. Finally, rotate the concave lower fastening nut to fasten the U-shaped support rod to the hemispherical end threaded support connecting rod through the spacing block.

[0038] Step (4): Use waterproof sealant to fill and seal the gap between the upper protective cover and the lower protective cover, and then cover the manhole cover.

[0039] Step (5): Use filler to fill the tiny gap between the well ring and the top surface of the road surface.

[0040] If there is settlement on the road surface around the well ring, repair it to keep the well ring and the outer road surface level.

[0041] Furthermore, a construction method for raising and lowering the elevation of an energy-saving and environmentally friendly manhole device for road reconstruction comprises the following steps:

[0042] Step (1): Calculate the center top elevation of each energy-saving and environmentally friendly manhole device in accordance with the construction design drawings of the road reconstruction, and determine the increase and decrease values ​​of the energy-saving and environmentally friendly manhole device based on the existing elevation of the energy-saving and environmentally friendly manhole device.

[0043] Step (2): Based on the thickness of the reconstructed pavement surface layer and the elevation and reduction values ​​of the energy-saving and environmentally friendly manhole device, calculate and determine the elevation of the manhole ring of the energy-saving and environmentally friendly manhole device to the elevation and reduction values ​​of the top surface of the reconstructed pavement base layer, open the manhole cover, and remove the waterproof sealant.

[0044] Step (3): rotate and loosen the limit nut, then screw the concave upper fastening connection nut out of the outer thread of the threaded support sleeve, and then rotate and loosen the concave lower fastening connection nut. According to the elevation of the well ring, the elevation and decrease of the top surface of the reconstructed road base are adjusted to the elevation and decrease of the top surface of the road base according to the scale on the threaded support sleeve. When the elevation of the well ring top surface is adjusted to be flush with the top surface of the road base, the concave upper fastening connection nut is screwed into the outer thread of the threaded support sleeve and tightened. Then, the limit nut is rotated to tighten and limit it through the spring washer. Finally, the concave lower fastening connection nut is rotated to tighten the U-shaped support rod and the hemispherical end threaded support connecting rod through the spacing block; cover the well cover.

[0045] Step (4): Reconstruct the road pavement base, and then construct various pavement structural layers on the road base, manhole rings, and manhole covers.

[0046] Step (5): Locate and accurately determine the center and edge positions of the manhole. Use a cutting machine to accurately cut along the edge line, remove the pavement layer on the manhole ring and manhole cover and clean them. Use a 5-meter ruler as a reference to measure the distance between the top surface of the manhole ring and manhole cover and the top surface of the pavement, and open the manhole cover.

[0047] Step (6): Rotate and loosen the limit nut, then screw the concave upper fastening nut out of the outer thread of the threaded support sleeve, and then rotate and loosen the concave lower fastening nut. According to the measured rising height, refer to the scale on the threaded support sleeve, rotate the twist block to adjust the elevation and slope of the top surface of the well ring to be flush with the top surface of the road surface, and use a 5-meter ruler to check the flatness of the top surface of the well ring and the top surface of the road surface and the longitudinal and transverse slopes. When they match, screw the concave upper fastening nut into the outer thread of the threaded support sleeve and tighten it, then rotate the limit nut, tighten and limit it with the spring washer, and finally rotate the concave lower fastening nut to fasten the U-shaped support rod to the hemispherical end threaded support connecting rod through the spacing block.

[0048] Step (7): Use waterproof sealant to fill and seal the gap between the upper protective cover and the lower protective cover, and cover the manhole cover; use caulking material to fill the small gap between the manhole ring and the top surface of the road surface.

[0049] Compared with the prior art, the present invention has the following beneficial effects:

[0050] The present invention discloses a device for raising and lowering a manhole ring and a manhole cover, which can be precisely positioned at the millimeter level in connection with the top surface flatness of a road surface structure layer around the manhole ring. When the road surface top surface or the manhole ring and manhole cover sink, the manhole ring and manhole cover can be raised or lowered in time, and the effective connection between the road top surface and the manhole ring and manhole cover and the consistency of the flatness and slope between the road top surface and the manhole ring and manhole cover are maintained in real time, so as to maintain the normal operation function of the road, avoid vehicle jumping and road surface tearing and damage caused by the sinking of the road surface top surface or the manhole ring and manhole cover, prevent the reduction of vehicle travel speed, ensure the operation efficiency of the city, greatly reduce and lower the maintenance cost of the manhole ring and manhole cover on the road surface due to the settlement difference, and prevent the environmental pollution and road blockage problems caused thereby. When the elevation of the original road needs to be raised or lowered during the road upgrading and reconstruction, the present invention does not need to remove the manhole cover and the structural elevation of the manhole body needs to be raised or chiseled out. It is only necessary to raise or lower the manhole cover and the manhole ring, and there is no need to replace the manhole device, which saves the corresponding materials and achieves energy-saving effects. At the same time, it effectively shortens the construction period of the road upgrading and reconstruction, provides conditions for resuming road traffic as soon as possible, and reduces and lowers the investment. The device of the present invention is permanent and can adapt to any changes in the elevation and longitudinal and transverse slopes of the road, and has a simple structure and a convenient method. The construction method of the present invention adopts the buried construction method to ensure the compaction and paving quality of the road surface structure layer around the manhole, effectively slow down and suppress the post-construction settlement of the road surface around the manhole, and maintain the quality and connection of the composite road surface of the road and the manhole.

[0051] The present invention solves the above problems from the following aspects based on the shortcomings of the prior art and the industry technology's requirements for the accuracy and performance of the top surface positioning of the device: First, in order to ensure that the manhole structure can withstand the live load of road vehicles and to ensure the quality and stability of the structural engineering surrounding the manhole, the device of the present invention is rigid and is installed on the top surface of a cement concrete, cement reinforced concrete or steel manhole body at a certain elevation, and is provided with an upper protective cover and a lower protective cover; Second, because the top surface of the device is generally not a plane, and the upper part has a certain inclination, each support rod supporting the top surface of the cover has a different adjustment height, and three support rods are arranged at intervals of 120 degrees. At the same time, an opening with a larger upper part and a smaller lower part is set on the upper part of the U-shaped support rod, and the bottom of the opening is hemispherical, which can be aligned with the semi-spherical bottom. The lower hemisphere of the ball-end threaded support link is installed in a matching manner, and a certain distance is set between the upper protective cover and the lower protective cover; thirdly: the raising and lowering of the device is implemented through the assembly of the hemispherical-end threaded support link and the threaded support sleeve. By rotating the torsion block on the hemispherical-end threaded support link, the elevation, lowering and inclination adjustment of the manhole ring connected by the threaded support sleeve can be achieved; fourthly: through embedded construction, the quality and compaction of each structural layer of the road surface can be guaranteed, and the post-construction settlement of the structures around the manhole can be avoided, and the elevation, flatness, longitudinal slope and transverse slope of the manhole and the top surface of the road surface structure layer are connected to meet the regulations; fifthly: in order to prevent theft and maintain the integrity of the device, it is connected and tightened with the U-shaped support rod through the concave lower fastening nut to prevent live load vibration of the vehicle.

[0052] Taking into account the large number of devices of the present invention and their wide distribution, manual inspections or regular observations cannot timely detect the settlement of the road surface or manholes. In combination with the construction of smart cities and intelligent management of all manholes, it is possible to consider burying displacement sensors in the concrete construction of the manhole body and the pavement structure in contact with the manhole edge. Through the Internet of Things and computer connection, the settlement values ​​of the manhole or the surrounding road surface top can be automatically collected in real time. When the settlement difference between the manhole and the surrounding road surface top exceeds a certain value, the manhole number, location, and settlement difference are sent to authorized personnel through the APP applet, and maintenance management personnel can promptly raise or lower the elevation of the manhole.

[0053] The device of the present invention takes into account both the creative feasibility and the economic efficiency of the technology, so as to facilitate its popularization and use in the municipal industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is a schematic diagram of the arrangement of the present invention;

[0055] Figure 2 It is a schematic diagram of the structural cross section of the present invention;

[0056] Figure 3 is a schematic structural diagram of a U-shaped support rod 1;

[0057] Figure 4 It is a structural schematic diagram of the hemispherical end threaded support connecting rod 2.

[0058] In the figure: 1-U-shaped support rod, 2-hemispherical end threaded support rod, 3-well ring, 4-threaded support sleeve, 5-concave upper fastening connecting nut, 6-concave lower fastening connecting nut, 7-twist block, 8-upper protective cover, 9-lower protective cover, 10-upper support rod, 11-lower support rod, 12-spring washer, 13-limiting nut, 14-base, 15-spacer block, 16-foldable anti-fall platform net, 17-waterproof sealant. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0060] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be understood by people with ordinary skills in the field. The words "first", "second" and similar words used in this embodiment do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Install", "connect", "couple", "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. "Up", "down", "left", "right", "horizontal" and "vertical" are only used relative to the orientation of the components in the drawings. These directional terms are relative concepts. They are used for description and clarification relative to the components, and they can change accordingly according to the change of the orientation of the components in the drawings. Example 1

[0061] like Figure 1 , 2 As shown, the energy-saving and environment-friendly lifting manhole device of this embodiment includes a U-shaped support rod 1, a hemispherical end threaded support rod 2, a threaded support sleeve 4 and a manhole ring 3, an upper protective cover 8, a lower protective cover 9, an upper support rod 10, a lower support rod 11, and a foldable anti-fall platform net 16. It is preferably made of steel.

[0062] The U-shaped support rod 1 also includes a rectangular base 14, on which are reserved four bolt holes for connecting the flange embedded in the top of the cement reinforced concrete manhole body, and four screws are reserved on the outside for connecting with the flange of the lower protective cover 9; the lower part of the lower protective cover 9 is reserved with a plurality of flanges and holes connected with the flanges embedded in the top of the cement reinforced concrete manhole body, as well as flanges and holes connected with the screws reserved on the outside of the base 14, and four bolt connection thread holes are set at the corresponding positions of the lower protective cover 9, the U-shaped support rod 1 and the base 14, and the lower support rod 11 are made as an integral part, and the other end of the lower support rod 11 adopts a flange made with an arc adapted to the lower protective cover 9, which is connected to the thread holes of the lower protective cover 9 through screws; the upper part of the U-shaped support rod 1 is a circular mortar-shaped opening with a larger upper part and a smaller lower part, the bottom of the opening is hemispherical, and the outer side of the upper part is threaded for connecting with the concave lower fastening nut 6.

[0063] The hemispherical end threaded support connecting rod 2 includes a spacing block 15 and a torsion block 7; a concave lower fastening connecting nut 6 is installed on the hemispherical end threaded support connecting rod 2 to be connected to the U-shaped support rod 1; the concave upper fastening connecting nut 5, spring washer 12, and limit nut 13 are combined together to be connected to the threaded support sleeve 4. The hemispherical end threaded support link 2 is provided with a spacing block 15 at the position flush with the top surface of the U-shaped support rod 1, and a regular octagonal twist block 7 is provided at a distance above the spacing block 15, and a thread is made on the support link above the regular octagonal twist block 7; the height of the twist block 7 is less than the height of the spacing block 15, so that the opening of the concave lower fastening nut 6 can pass through the twist block 7; the function of the spacing block 15 is to cooperate with the concave lower fastening nut 6 and connect with the U-shaped support rod 1, so that the U-shaped support rod 1 and the hemispherical end threaded support link 2 form a whole, that is, anti-theft, and can be tightly fastened to prevent the vehicle from vibrating under live load. Considering the longitudinal and transverse slopes of the road surface, the hemispherical end threaded support link 2 will A certain angle of inclination occurs, while the U-shaped support rod 1 is in a vertical state. In order to ensure the buckling effect of the concave lower fastening connection nut 6, a spacing block 15 is set to contact the concave lower fastening connection nut 6 and to achieve the maximum area of ​​contact with the arc surface; the spacing block 15 is divided equally according to the diameter and circumference of the hemispherical end threaded support link 2, and eight blocks are made on it. The top surface of the block is made into an arc, and the top of the groove of the concave lower fastening connection nut 6 is made to be consistent with the top surface curvature of the spacing block 15, so that the spacing block 15 and the concave lower fastening connection nut 6 are closely attached when fastened; the hemispherical end threaded support link 2 and the regular octagonal torsion block 7 and the spacing block 15 are made as an integral component. When the road surface has a slope, the hemispherical end threaded support link 2 tilts, and the top of the groove of the concave lower fastening connection nut 6 can be partially closely attached to the spacing block 15. Due to the curvature, the close fit between the components can be guaranteed. The curvature can be a cubic parabola, a quadratic parabola or a circular arc.

[0064] The threaded support sleeve 4 includes a well collar 3, an upper protective cover 8 and an upper support rod 10 connected thereto. The well collar 3 is connected to the threaded support sleeve 4 and the upper protective cover 8, and the upper support rod 10 is connected to the threaded support sleeve 4 and the upper protective cover 8, and is made as an integral part. The threaded support sleeve 4 is an internal hollow circular hole, a thread is arranged in the circular hole, and a thread is made on the outer side of the lower end. A scale is arranged from the outer side of the connection between the threaded support sleeve 4 and the well collar 3 to the outer side thread of the lower end section.

[0065] The upper protective cover 8 is outside, and the lower protective cover 9 is inside. A certain distance is set between the upper and lower protective covers, and a waterproof sealant 17 is used to fill the sealing gap.

[0066] The foldable anti-fall platform net 16 is placed on the top of the cement reinforced concrete manhole body or on the flange, and is a foldable mesh structure.

[0067] This embodiment is a construction method for a new energy-saving and environmentally friendly lifting manhole device, and the steps are as follows:

[0068] Step (1): On the top surface of the installed steel bars and formwork for the on-site cast cement reinforced concrete manhole body, accurately lay out the flange of the base 14 of the U-shaped support rod 1 and the flange of the lower protective cover 9, install the flange of the base 14 and the flange of the protective cover 9, and fix them to the steel bars and formwork of the manhole body. During the casting of the cement concrete for the manhole body, the accuracy of the position of each flange should be observed to ensure the correct position.

[0069] Step (2): Clean the top surfaces and screws of the flanges embedded in the cement reinforced concrete of the cast-in-place manhole body, and calibrate the positions of the connecting screws.

[0070] Step (3): Insert the flange reserved holes of the base 14 and the lower protective cover 9 along the flange bolts anchored on the cement reinforced concrete of the manhole body and the screws reserved on the outside of the base 14, tighten the bolts and nuts to ensure that the base 14 and the lower protective cover 9 are firmly connected to the manhole body through the flange, and the lower support rod 11 is connected to the threaded hole of the lower protective cover 9 through the screw, and the double-folding anti-fall platform net 16 is installed at the same time.

[0071] Step (4): In the on-site processing workshop, turn over the well ring 3 so that the lower end of the threaded support sleeve 4 faces upward, insert the concave lower fastening nut 6 from the threaded end of the hemispherical end threaded support connecting rod 2, then screw in the limit nut 13, and then insert the spring washer 12. Finally, screw in the concave upper fastening nut 5, and then screw the hemispherical end threaded support connecting rod 2 into the thread from the lower end of the threaded support sleeve 4. Then, reverse the concave upper fastening nut 5 to connect the hemispherical end threaded support connecting rod 2 to the threaded support sleeve 4.

[0072] Step (5): transport the hemispherical end threaded support link 2 and the threaded support sleeve 4 assembled and connected in the construction site processing workshop to the construction site, unload the assembled components, turn them over to the positive direction of the well ring 3, and insert the hemispherical end of the hemispherical end threaded support link 2 into the opening of the U-shaped support rod 1.

[0073] Step (6): After rotating the concave upper fastening nut 5 to separate it from the threaded support sleeve 4, rotate the torsion block 7 to adjust the elevation and slope of the top surface of the well ring 3 to be flush with the top of the road base, screw the concave upper fastening nut 5 into the outer thread of the threaded support sleeve 4 and tighten it, then rotate the limit nut 13, tighten and limit it through the spring washer 12, and finally rotate the concave lower fastening nut 6 to tighten the U-shaped support rod 1 and the hemispherical end threaded support connecting rod 2 through the spacing block 15; cover the well cover and evenly apply a layer of lubricating butter around the outer side of the upper protective cover 8.

[0074] When the torsion block 7 is rotated, the hemispherical end of the hemispherical end threaded support rod 2 rotates in the hemispherical ring of the U-shaped support rod 1, and at the same time rotates in the threaded support sleeve 4 which is a fixing part composed of the threaded support sleeve 4 and the well ring 3. The height of the threaded end of the hemispherical end threaded support rod 2 is changed to meet the requirement of adjusting the elevation of the well ring 3. A manhole has three height adjustment parts, and the heights of the three adjustment parts are inconsistent, so that different slopes can be achieved on the surface of the well ring 3.

[0075] Step (7): construct the road earthwork, subbase and base, and then construct the various structural layers of the road surface on the road base, manhole ring 3 and manhole cover.

[0076] Step (8): Locate and accurately determine the center and edge positions of the manhole. Use a cutting machine with a radius consistent with the outer radius of the manhole ring to accurately cut along the edge line. Manually chisel away the pavement layer on top of the manhole ring 3 and clean it. Use a 5-meter ruler as a reference to measure the distance between the manhole ring 3 and the top surface of the manhole cover and the top surface of the road surface, and open the manhole cover.

[0077] Step (9): rotate and loosen the limit nut 13, then screw the concave upper fastening nut 5 out of the outer thread of the threaded support sleeve 4, and then rotate and loosen the concave lower fastening nut 6. According to the measured rising height, refer to the scale on the threaded support sleeve 4, rotate the torsion block 7 to adjust the elevation and slope of the top surface of the well ring 3 to be flush with the top surface of the road surface, and use a 5-meter ruler to check the flatness of the well ring 3 and the top surface of the manhole cover with the top surface of the road surface and the longitudinal and transverse slopes. Screw the concave upper fastening nut 5 into the outer thread of the threaded support sleeve 4 and tighten it, then rotate the limit nut 13, tighten and limit it through the spring washer 12, and finally rotate the concave lower fastening nut 6 to fasten the U-shaped support rod 1 to the hemispherical end threaded support connecting rod 2 through the spacing block 15.

[0078] Step (10): Use "Qiangren" brand waterproof sealant 17 to fill and seal the gap between the upper protective cover 8 and the lower protective cover 9, and cover the well cover.

[0079] Step (11): Use epoxy asphalt filler to penetrate and fill the tiny gap between the well ring 3 and the top surface of the road surface. Example 2

[0080] The energy-saving and environmentally friendly lifting manhole device of this embodiment has the same structure as that of embodiment 1, and is used to repair the difference between the road surface top surface and the manhole ring when there is a certain settlement difference. The construction method of repairing an energy-saving and environmentally friendly manhole device elevation lifting of this embodiment has the following steps:

[0081] Step (1): Using a 5-meter ruler as a reference, measure the distance between the manhole ring and the top surface of the manhole cover and the surrounding asphalt road surface, and open the manhole cover.

[0082] Step (2): Remove the “Qiangren” brand waterproof sealant 17.

[0083] Step (3): rotate and loosen the limit nut 13, then screw the concave upper fastening nut 5 out of the outer thread of the threaded support sleeve 4, and then rotate and loosen the concave lower fastening nut 6. Determine the rising or falling height of the well ring 3 based on the 5-meter ruler. Compare it with the scale on the threaded support sleeve 4, rotate the regular octagonal torsion block 7 to adjust the elevation and slope of the top surface of the well ring 3 to be flush with the top surface of the road surface, and use a 5-meter ruler to check the flatness of the well ring 3 and the top surface of the manhole cover with the top surface of the road surface. When the longitudinal and transverse slopes are consistent, screw the concave upper fastening nut 5 into the outer thread of the threaded support sleeve 4 and tighten it, then rotate the limit nut 13, tighten and limit it through the spring washer 12, and finally rotate the concave lower fastening nut 6 to fasten the U-shaped support rod 1 to the hemispherical end threaded support connecting rod 2 through the spacing block 15.

[0084] Step (4): Use "Qiangren" brand waterproof sealant 17 to fill and seal the gap between the upper protective cover 8 and the lower protective cover 9, and cover the well cover.

[0085] Step (5): Use modified emulsified asphalt filler to fill the tiny gap between the well ring 3 and the top surface of the road surface.

[0086] If there is settlement on the road surface around the well ring, repair it to keep the well ring and the outer road surface level. Example 3

[0087] The energy-saving and environmentally friendly lifting manhole device of this embodiment has the same structure as that of embodiment 1. It is to upgrade and transform the road of the newly built energy-saving and environmentally friendly lifting manhole device of embodiment 1, and to reconstruct the road when the road elevation is raised or lowered. A construction method for lifting and lowering the elevation of an energy-saving and environmentally friendly manhole device is provided. The method steps are as follows:

[0088] Step (1): Calculate the center top elevation of each energy-saving and environmentally friendly manhole device in accordance with the construction design drawings of the road reconstruction, and determine the increase and decrease values ​​of the energy-saving and environmentally friendly manhole device based on the existing elevation of the energy-saving and environmentally friendly manhole device.

[0089] Step (2): Based on the thickness of the reconstructed road surface layer and the elevation and reduction values ​​of the energy-saving and environmentally friendly manhole device, calculate and determine the elevation of the energy-saving and environmentally friendly manhole device ring 3 to the elevation and reduction values ​​of the top surface of the reconstructed road base, open the manhole cover, and remove the "Qiangren" brand waterproof sealant 17.

[0090] Step (3): rotate and loosen the limit nut 13, then screw the concave upper fastening nut 5 out of the outer thread of the threaded support sleeve 4, and then rotate and loosen the concave lower fastening nut 6. According to the elevation of the well ring 3, the elevation and decrease of the top surface of the rebuilt road base are adjusted to the elevation and decrease of the top surface of the road base. When the elevation of the top surface of the well ring 3 is adjusted to be flush with the top surface of the road base, the concave upper fastening nut 5 is screwed into the outer thread of the threaded support sleeve 4 and tightened, and then the limit nut 13 is rotated to tighten and limit it through the spring washer 12, and finally the concave lower fastening nut 6 is rotated to fasten the U-shaped support rod 1 and the hemispherical end threaded support connecting rod 2 through the spacing block 15; cover the well cover.

[0091] Step (4): Reconstruct the road pavement base, and then construct various pavement structural layers on the road base, manhole ring 3, and manhole cover.

[0092] Step (5): Locate and accurately determine the center and edge position of the manhole. Use a cutting machine with a radius consistent with the outer radius of the manhole ring to accurately cut along the edge line. Manually chisel away the pavement layer paved on the manhole ring 3 and clean it. Use a 5-meter ruler as a reference to measure the distance between the manhole ring 3 and the top surface of the manhole cover and the top surface of the road surface, and open the manhole cover.

[0093] Step (6): rotate and loosen the limit nut 13, then screw the concave upper fastening nut 5 out of the outer thread of the threaded support sleeve 4, and then rotate and loosen the concave lower fastening nut 6. According to the measured rising height, refer to the scale on the threaded support sleeve 4, rotate the regular octagonal twist block 7 to adjust the elevation and slope of the top surface of the well ring 3 to be flush with the top surface of the road surface, and use a 5-meter ruler to check the flatness of the well ring 3 and the top surface of the manhole cover with the top surface of the road surface and the longitudinal and transverse slopes. When they match, screw the concave upper fastening nut 5 into the outer thread of the threaded support sleeve 4 and tighten it, then rotate the limit nut 13, tighten and limit it through the spring washer 12, and finally rotate the concave lower fastening nut 6 to fasten the U-shaped support rod 1 to the hemispherical end threaded support connecting rod 2 through the spacing block 15.

[0094] Step (7): Use "Qiangren" brand waterproof sealant 17 to fill and seal the gap between the upper protective cover 8 and the lower protective cover 9, and cover the manhole cover; use epoxy asphalt filler to fill the small gap between the manhole ring 3 and the top surface of the road surface.

[0095] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Some structures such as the foldable anti-fall platform net, flange, bolts or screws, manhole covers, urban road pavement, etc. are mature structures, which are not shown in the drawings and can be adjusted according to actual conditions. It does not affect the understanding of the technical solution of the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An energy-saving and environment-friendly lifting manhole device, characterized in that: It comprises a U-shaped support rod (1), a hemispherical end threaded support rod (2), a threaded support sleeve (4), a well ring (3), an upper protective cover (8), a lower protective cover (9), an upper support rod (10), a lower support rod (11) and a foldable anti-fall platform net (16); The upper part of the U-shaped support rod (1) is a circular opening which is larger at the upper part and smaller at the lower part. The bottom of the opening is hemispherical and the outer side of the upper part is threaded. The U-shaped support rod (1) comprises a base (14), a lower protective cover (9) and a lower support rod (11). The base (14) is connected to the U-shaped support rod (1). The lower protective cover (9) is connected to the outer side of the base (14). The two ends of the lower support rod (11) are respectively connected to the U-shaped support rod (1) and the lower protective cover (9). The base (14) is provided with bolt holes connected to the flange plate pre-buried at the top of the cement reinforced concrete manhole body. The hemispherical end threaded support connecting rod (2) comprises a spacing block (15) and a torsion block (7); a concave lower fastening connection nut (6) connected to the U-shaped support rod (1) is installed on the hemispherical end threaded support connecting rod (2); the concave upper fastening connection nut (5), a spring washer (12) and a limit nut (13) are combined together and connected to the threaded support sleeve (4); The lower part of the hemispherical end threaded support connecting rod (2) is a hemispherical body, a spacing block (15) is arranged at a position flush with the top surface of the U-shaped support rod (1), a regular polygonal twisting block (7) is arranged at a distance above the spacing block (15), and a thread is made on the support connecting rod above the regular polygonal twisting block (7); The height of the torsion block (7) is smaller than the height of the spacing block (15); the opening of the concave lower fastening nut (6) can pass through the torsion block (7); the top surface of the spacing block (15) is formed into an arc shape; the top of the groove of the concave lower fastening nut (6) is formed to be consistent with the arc of the top surface of the spacing block (15); the hemispherical end threaded support connecting rod (2) and the torsion block (7) and the spacing block (15) are manufactured as an integral component; The threaded support sleeve (4) comprises a well collar (3), an upper protective cover (8) and an upper support rod (10); the well collar (3) is connected to the threaded support sleeve (4), the upper protective cover (8) is connected to the well collar (3), and both ends of the upper support rod (10) are respectively connected to the threaded support sleeve (4) and the upper protective cover (8); The threaded support sleeve (4) has a hollow circular hole inside, a thread is arranged in the circular hole, a thread is made on the outer side of the lower end, a scale is arranged from the outer side of the connection between the threaded support sleeve (4) and the well ring (3) to the outer side thread of the lower end, and an upper protective cover (8) is arranged on the outer side of the well ring (3); The upper protective cover (8) is outside, and the lower protective cover (9) is inside. A certain distance is set between the upper and lower protective covers, and a waterproof sealant (17) is used to fill the seal gap. The foldable anti-fall platform net (16) is placed on the top of the cement reinforced concrete manhole body or on the flange plate and is a foldable net structure.

2. The energy-saving and environment-friendly lifting manhole device according to claim 1 is characterized in that: There are three height-adjustable support structural members formed by connecting a U-shaped support rod (1), a hemispherical end threaded support rod (2), and a threaded support sleeve (4), which are arranged at an angle of 120 degrees to each other. The base (14) of the U-shaped support rod (1) is connected to a flange plate provided on the top of the cement reinforced concrete manhole body.

3. The energy-saving and environment-friendly lifting manhole device according to claim 1 is characterized in that: The base (14) of the U-shaped support rod (1) is square or circular, and the base (14) has no less than four bolt holes. A flange is arranged at the lower part of the lower protective cover (9) at a non-base position and connected to a flange arranged on the top of the cement reinforced concrete manhole body; The U-shaped support rod (1) and the base (14), the lower protective cover (9), and the lower support rod (11) are made into an integral part, or the U-shaped support rod (1) and the base (14) and the lower support rod (11) are made into an integral part, and a screw rod connected to the lower flange of the lower protective cover (9) is made on the outer side of the base (14), and at least 4 thread holes are set at the corresponding positions of the lower protective cover (9) at the connection with the lower support rod (11). The other end of the lower support rod (11) adopts a flange plate made of an arc adapted to the lower protective cover (9), and is connected to the thread hole of the lower protective cover (9) through the screw rod.

4. A construction method for an energy-saving and environment-friendly lifting manhole device according to any one of claims 1 to 3, characterized in that: The steps include: Step (1): on the top surface of the steel bars and formwork installed on the cement reinforced concrete manhole body cast on site, accurately lay out the flange of the base (14) of the U-shaped support rod (1) and the flange of the lower protective cover (9), install the flange of the base (14) and the flange of the protective cover (9), and fix them on the steel bars and formwork of the manhole body. During the pouring of the cement concrete of the manhole body, the accuracy of the position of each flange should be observed to ensure the correct position, or the bolt holes of each flange should be reserved; For the installed prefabricated manhole body reinforced concrete components, reserve the bolt holes for each flange in advance; Step (2): Check the position of the reserved bolt holes, expand or re-drill the holes if any deviation is found, clean the dust in the holes, inject anchor slurry, insert the bolts of each flange into the anchor slurry in the bolt holes, and calibrate the fixing position and elevation; Clean all flanges embedded in cement reinforced concrete of the cast-in-place manhole body; Step (3): insert the flange bolts anchored on the cement reinforced concrete of the manhole body through the reserved holes of the flanges of the base (14) and the lower protective cover (9), tighten the nuts of the bolts, so that the base (14) and the lower protective cover (9) are firmly connected to the manhole body through the flanges, and install the foldable anti-fall platform net (16); Step (4): In the on-site processing workshop, the well ring (3) is turned over so that the lower end of the threaded support sleeve (4) faces upward, and the concave lower fastening nut (6) is inserted from the threaded end of the hemispherical end threaded support connecting rod (2), and then the limit nut (13) is screwed in, and then the spring washer (12) is inserted, and finally the concave upper fastening nut (5) is screwed in, and the hemispherical end threaded support connecting rod (2) is screwed in from the thread of the lower end of the threaded support sleeve (4), and then the concave upper fastening nut (5) is reversed to connect the hemispherical end threaded support connecting rod (2) to the threaded support sleeve (4); Step (5): transport the hemispherical end threaded support connecting rod (2) and the threaded support sleeve (4) assembled and connected in the on-site processing workshop to the construction site for unloading, select a flat area on the construction site to turn the assembled components over so that the well ring (3) is in the positive direction, and insert the hemispherical end of the hemispherical end threaded support connecting rod (2) into the opening of the U-shaped support rod (1); Step (6): After the concave upper fastening nut (5) and the threaded support sleeve (4) are rotated and separated, the twist block (7) is rotated to adjust the elevation and slope of the top surface of the well ring (3) to be flush with the top of the road base, the concave upper fastening nut (5) is screwed into the outer thread of the threaded support sleeve (4) and tightened, and then the limit nut (13) is rotated to tighten and limit the position through the spring washer (12), and finally the concave lower fastening nut (6) is rotated to tighten the U-shaped support rod (1) and the hemispherical end threaded support connecting rod (2) through the spacing block (15), and the well cover is closed; Step (7): constructing the road base, and then constructing various road surface structural layers on the road base, the manhole ring (3) and the manhole cover; Step (8): Locate and accurately determine the center and edge positions of the manhole, use a cutting machine to accurately cut along the edge line, remove the road surface layer paved above the manhole ring (3) and clean it, use a 5-meter ruler as a reference, measure the distance between the manhole ring (3) and the top surface of the manhole cover and the top surface of the road surface, and open the manhole cover; Step (9): rotate and loosen the limit nut (13), then screw the concave upper fastening nut (5) out of the outer thread of the threaded support sleeve (4), and then rotate and loosen the concave lower fastening nut (6). According to the measured rising height, refer to the scale on the threaded support sleeve (4), rotate the twist block (7) to adjust the elevation and slope of the top surface of the well ring (3) to be flush with the top surface of the road surface, and use a 5-meter ruler to check that the flatness and longitudinal and transverse slopes of the top surface of the well ring (3) and the well cover match the top surface of the road surface. Screw the concave upper fastening nut (5) into the outer thread of the threaded support sleeve (4) and tighten it, then rotate the limit nut (13) and tighten it with the spring washer (12). Finally, rotate the concave lower fastening nut (6) to fasten the U-shaped support rod (1) to the hemispherical end threaded support connecting rod (2) through the spacing block (15); Step (10): Use waterproof sealant (17) to fill and seal the gap between the upper protective cover (8) and the lower protective cover (9), and cover the manhole cover; use filler to fill the small gap between the manhole ring (3) and the top surface of the road surface.

5. The construction method of the energy-saving and environment-friendly lifting manhole device according to claim 4 is characterized in that: The steps include: Step (11): Using a 5-meter ruler as a reference, measure the distance between the manhole ring (3) and the top surface of the manhole cover and the surrounding asphalt road surface, and open the manhole cover; Step (12): removing the waterproof sealant (17); Step (13): rotate and loosen the limit nut (13), then screw the concave upper fastening nut (5) out of the outer thread of the threaded support sleeve (4), and then rotate and loosen the concave lower fastening nut (6). Determine the rising or falling height of the well ring (3) by measuring with a 5-meter ruler, and adjust the elevation and slope of the top surface of the well ring (3) to be flush with the top surface of the road surface by comparing with the scale on the threaded support sleeve (4). When the flatness and longitudinal and transverse slopes of the top surface of the well ring (3) and the well cover are consistent with the top surface of the road surface, screw the concave upper fastening nut (5) into the outer thread of the threaded support sleeve (4) and tighten it, then rotate the limit nut (13) and tighten it with the spring washer (12). Finally, rotate the concave lower fastening nut (6) to fasten the U-shaped support rod (1) to the hemispherical end threaded support connecting rod (2) through the spacing block (15); Step (14): using waterproof sealant (17) to fill and seal the gap between the upper protective cover (8) and the lower protective cover (9), and then covering the well cover; Step (15): Use a joint filler to fill the tiny gap between the well ring (3) and the top surface of the road surface; If there is settlement on the road surface around the well ring, repair it to keep the well ring and the outer road surface level.

6. The construction method of the energy-saving and environment-friendly lifting manhole device according to claim 4 is characterized by: The steps include: Step (11): Calculate the center top elevation of each energy-saving and environmentally friendly lifting manhole device in accordance with the construction design drawings of the road reconstruction, and determine the lifting and lowering values ​​of the energy-saving and environmentally friendly lifting manhole device based on the existing elevation of the energy-saving and environmentally friendly lifting manhole device; Step (12): Based on the thickness of the reconstructed road surface layer and the elevation and descent values ​​of the energy-saving and environmentally friendly lifting manhole device, calculate and determine the elevation and descent values ​​of the manhole ring (3) of the energy-saving and environmentally friendly lifting manhole device to the top surface of the reconstructed road surface base, open the manhole cover, and remove the waterproof sealant (17); Step (13): rotate and loosen the limit nut (13), then screw the concave upper fastening connection nut (5) out of the outer thread of the threaded support sleeve (4), and then rotate and loosen the concave lower fastening connection nut (6). According to the elevation of the well ring (3), the elevation is raised or lowered to the elevation or lowering value of the top surface of the reconstructed road base. When the elevation of the top surface of the well ring (3) is adjusted to be flush with the top surface of the road base, the concave upper fastening connection nut (5) is screwed into the outer thread of the threaded support sleeve (4) and tightened. Then, the limit nut (13) is rotated and tightened by the spring washer (12). Finally, the concave lower fastening connection nut (6) is rotated to fasten the U-shaped support rod (1) and the hemispherical end threaded support connecting rod (2) through the spacing block (15), and the well cover is closed. Step (14): Reconstruct the road pavement base, and then construct various pavement structural layers on the road pavement base, the manhole ring (3), and the manhole cover; Step (15): Locate and accurately determine the center and edge positions of the manhole, use a cutting machine to accurately cut along the edge line, remove the manhole ring (3) and the road surface layer paved on the manhole cover and clean it, use a 5-meter ruler as a reference, measure the distance between the manhole ring (3) and the top surface of the manhole cover and the top surface of the road surface, and open the manhole cover; Step (16): rotate and loosen the limit nut (13), then screw the concave upper fastening nut (5) out of the outer thread of the threaded support sleeve (4), and then rotate and loosen the concave lower fastening nut (6). According to the measured rising height, refer to the scale on the threaded support sleeve (4), rotate the twist block (7) to adjust the elevation and slope of the top surface of the well ring (3) to be flush with the top surface of the road surface, and use a 5-meter ruler to check that the flatness and longitudinal and transverse slopes of the top surface of the well ring (3) and the well cover match the top surface of the road surface. Screw the concave upper fastening nut (5) into the outer thread of the threaded support sleeve (4) and tighten it, then rotate the limit nut (13) and tighten it with the spring washer (12). Finally, rotate the concave lower fastening nut (6) to fasten the U-shaped support rod (1) to the hemispherical end threaded support connecting rod (2) through the spacing block (15); Step (17): Use waterproof sealant (17) to fill and seal the gap between the upper protective cover (8) and the lower protective cover (9), and cover the manhole cover; use caulking material to fill the small gap between the manhole ring (3) and the top surface of the road surface.

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