A removable and portable municipal wellhead or caisson opening protector

Abstract

A detachable and movable protective device for municipal manholes or bored pile holes mainly consists of an upper manhole fence and an lower manhole locking ring. Both are welded into a circular mesh shape by vertical steel columns and horizontal annular reinforcing steel bars. The upper manhole fence is placed on the ground above the manhole, and the lower manhole locking ring is embedded into the manhole, with the two anchored together. The bottom of the upper manhole fence is equipped with self-locking folding universal wheels, and reflective stickers are affixed to the upper and lower rings on the sides. Several safety warning signs are evenly distributed on the upper and middle parts of the sides, and a warning light is placed on the top. The bottom of the lower manhole locking ring is welded with a steel mesh to prevent falling objects, and the top is welded with a locking ring mounting plate and a manhole surface contact plate. The entire side is welded with a barrier. This utility model achieves a combination of rapid deployment and comprehensive protection through a foldable universal wheel assembly, a modular bolt connection mechanism, and a dual-layer protection design (lower and upper manhole). It has multiple advantages, including simple structure, quick assembly and disassembly, convenient transportation, good anti-collision performance, efficient warning effect, low manufacturing cost, and ease of implementation, making it suitable for widespread application.

Description

Technical Field

[0001] This utility model relates to the field of protection technology for municipal construction wellheads or bored pile holes, specifically a detachable and movable protection device for municipal wellheads or bored pile holes. Background Technology

[0002] With the continuous development of cities, the number of municipal engineering projects is gradually increasing, and municipal engineering construction work has become ubiquitous. Common examples include the maintenance of sewer pipes and cable conduits. Since these underground access roads are usually set up along the roadside, with manholes at intervals, temporary barriers, traffic cones, or other protective facilities are typically placed to protect the manhole area during temporary construction, emergency pipeline repairs, or when manhole covers are missing, to prevent pedestrians or vehicles from accidentally entering the construction area and causing danger. Current safety measures generally use metal barriers (grids) connected around the manhole to form a closed enclosure, with warning signs posted on the barriers. This method has several drawbacks: First, the metal barriers are connected with pins, making assembly cumbersome and prone to damage. Once damaged, they must be temporarily tied with wire or left unconnected, posing a safety hazard. Second, the barriers are placed around the manhole, with a weak connection to the ground, making them susceptible to displacement from collisions and losing their protective function. Third, there are gaps at the bottom of the enclosure, allowing construction debris, soil, stones, and other materials to fall into the wells, making them difficult to clean.

[0003] Another common method of manhole protection is to temporarily cover the manhole with a covering and install warning signs. This method is often used on road construction sites where no one is working inside the manhole. The drawback is that although the manhole is covered, the covering can shift due to unpredictable external factors, still posing a risk of pedestrians or vehicles accidentally entering. Barricades or grates still need to be installed around the manhole, along with warning signs, to serve a warning and maintenance purpose. The manhole cover is also prone to damage due to its lack of a secure connection to the ground and requires frequent maintenance. If maintenance is inadequate, the visual warning target is small due to the manhole cover, and the safety warning effect is not obvious, thus creating a safety hazard.

[0004] While other existing patented technologies have improved upon the shortcomings of the traditional protection methods mentioned above, they still have certain defects. For example, patent CN202322698471.1 (a municipal manhole construction protection device) improves the visibility of warnings and serves a certain warning function by adding moving wheels to a reinforced concrete base and installing a rotating display frame on top, but it has the following defects: First, the base is heavy and requires mechanical hoisting, which defeats the purpose of "portability"; second, it requires the manufacture of plastic manhole covers, increasing costs and reducing strength; and third, it lacks anti-collision function, posing a certain safety hazard. For example, patent CN202420055620.4 (portable inspection manhole protection device) uses a hinged support rod and a foldable positioning ring, which is lighter in weight and greatly reduces the volume after storage, making it easier to store and transport. However, it has the following defects: it lacks underground components and is only fixed by the ground positioning ring, resulting in insufficient stability and no anti-collision function. For example, patent CN202320146233.7 (Adjustable Protective Fence Around Municipal Manholes) features an adjustable internal support assembly. The relative extension and retraction of fixed and telescopic rods allows for the tightening of the manhole wall against the manhole's inner wall. It is suitable for municipal manholes of different sizes and offers advantages such as quick assembly and disassembly and reliable connection. However, it has the following drawbacks: 1) it is immovable; 2) it lacks warning and anti-falling object functions; 3) it lacks some impact resistance; and 4) there is a risk of hand pinching or crushing during installation. Patent CN202210856340.9 (A Safety Protection Device and Installation Method for Municipal Engineering Construction) uses multiple guardrail bodies connected end-to-end via movable connecting seats for easy folding and deployment. It includes fluorescent warning tape and warning signs for some warning effect, but it also has the following drawbacks: 1) the structure is complex and assembly is time-consuming; 2) the hinged connection has poor strength and weak impact resistance; 3) it is immovable and lacks anti-falling object functions. Summary of the Invention

[0005] To address the aforementioned shortcomings, this utility model provides a detachable and movable protective device for municipal manholes or bored pile holes. Through a foldable universal wheel assembly, a modular bolt connection mechanism, and a dual-protective layer design (underground and above ground), it achieves a balance between rapid deployment and comprehensive protection. It boasts multiple advantages, including simple structure, quick assembly and disassembly, convenient transportation, good anti-collision performance, efficient warning function, low manufacturing cost, ease of implementation, high safety factor, and anti-falling object function, making it suitable for widespread application.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A detachable and movable protective device for municipal manholes or bored pile holes mainly consists of an upper fence and an lower interlocking ring. Both are welded into a circular grid by vertical steel columns and horizontal ring reinforcing steel bars. The upper fence is placed on the ground above the manhole, and the lower interlocking ring is embedded in the manhole. The two are anchored together, and both are painted with yellow warning paint, which not only serves to indicate warning or caution, but also to prevent rust.

[0008] The welded steel structure reduces manufacturing costs, while the circular grid design makes the overall structure of the protective device lightweight, facilitating transportation and handling. It also allows the device to absorb kinetic energy through steel deformation upon impact, significantly reducing the risk of deformation and providing excellent impact resistance and a high safety factor. The embedded rings inside the well further stabilize the protective device, making it less prone to tipping over.

[0009] The detachable design of the wellhead railing and the underground interlocking ring allows for the pre-welding of several interlocking rings of different diameters before municipal construction, meeting the safety protection requirements of different wellhead diameters and offering wide adaptability. After the completion of one well, the rings can be installed at other wellheads for continued use, resulting in a high turnover rate.

[0010] The bottom of the well enclosure is welded with an enclosure mounting plate, the top is welded with a warning light mounting plate, and a warning light is placed on the warning light mounting plate. A ring of anti-falling object barriers is welded to the lower side, and several safety warning signs are evenly distributed and welded to the upper middle of the side. A ring of reflective base plates is welded to the top of the side.

[0011] The side panels of the well enclosure, including the anti-falling object barrier and reflective base plate, can be fitted with reflective stickers to form a double-ring reflective system, ensuring 360° visibility in low-light environments. Four warning signs are evenly distributed at the upper middle section, capable of displaying warning slogans and customized construction information. A magnetic solar-powered warning light is placed at the top, offering quick installation and self-rechargeable solar power for passive flashing warnings; it is also resistant to falling off in strong winds. In summary, the combination of a yellow exterior, double-ring reflective stickers, warning signs, and warning lights forms a four-tiered active warning system, effectively enhancing pedestrian and vehicle visibility and significantly reducing the risk of pedestrians and vehicles accidentally entering the construction area.

[0012] A steel mesh to prevent falling objects is welded to the bottom of the downhole locking ring, a locking ring mounting plate and a wellhead contact plate are welded to the top, and a perimeter barrier is welded around the entire side. A fine-mesh net is then placed over the steel mesh to prevent small debris from falling into the well.

[0013] A certain height is reserved between the mounting plate of the interlocking ring at the top of the downhole interlocking ring and the contact plate of the wellhead surface, and several reinforcing ribs are welded on, and the outer diameter of both is larger than the wellhead diameter.

[0014] Therefore, the downhole interlocking ring is designed with a "double-step structure": the upper step is fixedly connected to the fence mounting plate and provides a handhold, preventing hands from being pressed into the pressure zone during installation; the lower step creates a certain height space, accommodating the folded casters and providing safe space for operation. This completely solves the common risks of hand pinching and pressing in existing technologies. The design of reinforcing ribs also improves the structural strength of the downhole interlocking ring.

[0015] Meanwhile, the double interception design of "steel mesh + dense mesh" at the bottom of the underground interlocking ring and "anti-falling object barrier" at the bottom of the above-ground fence can prevent various debris or personnel from falling into the well, reduce the workload of subsequent well cleaning and improve safety.

[0016] Both the bottom mounting plate of the well enclosure and the top mounting plate of the underground fitting ring are hollow structures, each with several bolt through holes for bolt and nut anchoring. The hollow structure further reduces the overall weight, and the standardized bolt connections ensure that the protective device has a certain structural strength after connection.

[0017] The outer edge of the bottom surface of the well enclosure is equipped with a set of casters. The upper end of the casters is anchored to the channel steel, and the upper end of the channel steel is anchored to the push-button 90° self-locking folding hinge. The push-button 90° self-locking folding hinge is anchored to the enclosure mounting plate at the bottom of the well enclosure.

[0018] The bottom of the well enclosure is equipped with self-locking folding casters for easy transport and transfer. It can be folded in stages by pressing in sequence to avoid the risk of crushing your hands. It can also be rotated for precise docking when connected to the well bottom fitting ring, making disassembly and assembly quick and easy.

[0019] The steps for using this utility model are as follows:

[0020] 1. First, manually lift the well-entry ring and place it at the wellhead where construction is paused or where the well cover is missing;

[0021] 2. Then push the well top railing to move directly above the well bottom fitting ring, rotate it until its bolt through hole roughly coincides with the bolt through hole of the well bottom fitting ring, press the button of the 90° self-locking folding hinge to fold the universal wheel in sequence, and then use bolts and nuts to connect and fix the well bottom fitting ring and the well top railing.

[0022] 3. Next, affix double-ring reflective stickers to the anti-falling object fencing and reflective sticker base plate, and affix warning slogans and customized construction information to the safety warning signs;

[0023] 4. Finally, place a magnetic solar-powered warning light on the warning light mounting plate at the top of the well enclosure.

[0024] Similarly, this invention can also be used for the protection of the borehole opening of bored piles at construction sites.

[0025] Advantages of utility models:

[0026] 1. The bottom of the well enclosure of this utility model patent is equipped with a button-type 90° self-locking folding universal wheel set, which is convenient for transportation and transfer. It can be folded in stages by pressing in sequence, and can also be rotated for precise docking when connected with the well fitting ring. It is quick to assemble and disassemble.

[0027] 2. The upper and lower parts of this utility model patent are detachable, and the overall structure is a circular mesh, which is structurally stable and lightweight. It can also ensure that the protective device can absorb kinetic energy through the deformation of the steel bars when it is impacted, which greatly reduces the risk of device deformation.

[0028] 3. This utility model patent features a four-fold active warning unit, providing highly efficient warning: First, the entire exterior is painted with yellow warning paint to indicate warnings or caution, and also serves as a rust preventative measure; second, double-ring reflective stickers are installed on the upper and lower sides of the well enclosure to ensure 360° visibility in low-light environments; third, four warning signs are evenly distributed on the upper middle part of the side of the well enclosure, which can carry warning slogans and customized construction information; fourth, a magnetic solar warning light is placed on the top of the well enclosure, which is quick to install, has its own solar charging capability to achieve passive flashing warning, and is not easily dislodged in strong winds.

[0029] 4. The dual interception design of the bottom of the well-mounted interlocking ring with "steel mesh + dense mesh" and the bottom of the well-mounted fence with "anti-falling object barrier" can prevent various debris or personnel from falling into the well, reduce the workload of subsequent well cleaning and improve safety.

[0030] 5. This utility model patent features a "double-step structure" for the underground interlocking ring: the upper step is fixedly connected to the fence mounting plate and provides a handhold, preventing hands from being pressed into the pressure area during installation; the lower step creates a certain height space, accommodating the folded casters and providing safe space for operation. This completely solves the common risks of pinching and pressing hands in existing technologies. Attached Figure Description

[0031] Figure 1 This is an elevation view of the present utility model.

[0032] Figure 2 This is the front view of the present utility model;

[0033] Figure 3 for Figure 1 Enlarged structural diagram of the bolt connection at point I;

[0034] Figure 4 for Figure 2 Enlarged structural diagram at point II;

[0035] Figure 5 This is an elevation view of the well enclosure structure of this utility model;

[0036] Figure 6 This is a structural diagram of the downhole interlocking ring of this utility model.

[0037] Figure 7 This is a schematic diagram of the structure of this utility model after installation;

[0038] The numbers and component names in the diagram are as follows: 1-Well top fence; 11-Anti-falling object enclosure; 12-Reflective base plate; 13-Safety warning sign; 14-Warning light mounting plate; 15-Fence mounting plate; 16-Reinforcing steel column; 17-Ring reinforcing steel bar; 2-Well bottom locking ring; 21-Locking ring mounting plate; 22-Wellhead contact plate; 23-Reinforcing rib; 24-Anti-falling object steel mesh; 31-Wheel caster; 32-Channel steel; 33-Self-locking folding hinge; 4-Warning light. Detailed Implementation

[0039] Example 1

[0040] A detachable and movable protective device for municipal manholes or bored pile holes mainly consists of an upper manhole fence 1 and an lower manhole fitting ring 2. Both are welded into a circular mesh shape by vertical steel bars 16 and horizontal annular reinforcing bars 17. The upper manhole fence 1 is placed on the ground above the manhole, and the lower manhole fitting ring 2 is embedded in the manhole, and the two are anchored together. The bottom of the upper manhole fence 1 is welded with a fence mounting plate 15, and the top is welded with a warning light mounting plate 14. A warning light 4 is placed on the warning light mounting plate 14. A ring of anti-falling object barriers 11 is welded to the lower side, and several safety warning signs 13 are evenly distributed and welded to the middle and upper side. A ring of reflective base plates 12 is welded to the top of the side. The bottom of the lower manhole fitting ring 2 is welded with an anti-falling object steel mesh 24, and the top is welded with a fitting ring mounting plate 21 and a manhole surface contact plate 22. The entire side is welded with barriers.

[0041] The fence mounting plate 15 at the bottom of the well fence 1 and the fitting ring mounting plate 21 at the top of the well fitting ring 2 are both hollow structures, and each has several bolt through holes for bolt and nut anchoring.

[0042] The outer edge of the bottom surface of the well enclosure 1 is provided with a set of casters 31. The upper end of the casters 31 is anchored to the channel steel 32, the upper end of the channel steel 32 is anchored to the self-locking folding hinge 33, and the self-locking folding hinge 33 is anchored to the enclosure mounting plate 15 at the bottom of the well enclosure 1.

[0043] A certain height is reserved between the fitting ring mounting plate 21 at the top of the downhole fitting ring 2 and the wellhead surface contact plate 22, and several reinforcing ribs 23 are welded thereon, and the outer diameter of both is larger than the wellhead diameter.

Claims

1. A detachable and movable protective device for municipal wellheads or bored pile boreholes, characterized in that: The protective device is mainly composed of an upper fence (1) and an lower interlocking ring (2). Both are welded into a circular grid by vertical steel column (16) and horizontal ring reinforcing steel (17). The upper fence (1) is placed on the ground above the wellhead, and the lower interlocking ring (2) is embedded in the wellhead. The two are anchored together. The upper fence (1) has a fence mounting plate (15) welded at the bottom and a warning light mounting plate (14) welded at the top. A warning light (4) is placed on the warning light mounting plate (14). A ring of anti-falling object barriers (11) is welded at the lower end of the side. Several safety warning signs (13) are evenly distributed and welded at the middle and upper ends of the side. A ring of reflective base plate (12) is welded at the top of the side. The lower interlocking ring (2) has an anti-falling object steel mesh (24) welded at the bottom, an interlocking ring mounting plate (21) and a wellhead surface contact plate (22) welded at the top, and a ring of barriers welded around the entire side.

2. The detachable and movable municipal wellhead or bored pile hole protection device according to claim 1, characterized in that: The fence mounting plate (15) at the bottom of the well fence (1) and the fitting ring mounting plate (21) at the top of the well fitting ring (2) are both hollow structures and are provided with several bolt through holes for bolt and nut anchoring.

3. The detachable and movable municipal wellhead or bored pile hole protection device according to claim 1, characterized in that: The outer edge of the bottom surface of the well enclosure (1) is provided with a set of casters (31). The upper end of the casters (31) is anchored to the channel steel (32). The upper end of the channel steel (32) is anchored to the self-locking folding hinge (33). The self-locking folding hinge (33) is anchored to the enclosure mounting plate (15) at the bottom of the well enclosure (1).

4. The detachable and movable municipal wellhead or bored pile hole protection device according to claim 1, characterized in that: A certain height is reserved between the fitting ring mounting plate (21) at the top of the downhole fitting ring (2) and the wellhead surface contact plate (22), and several reinforcing ribs (23) are welded thereon, and the outer diameter of both is greater than the wellhead diameter.

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