Novel anti-prying well lid

Abstract

The utility model relates to a novel anti-prying well lid which comprises a manhole outer well ring and a manhole cover body, the manhole outer well ring is suitable for being annularly installed on a wellhead of an underground pipe well, the inner edge of the manhole outer well ring is provided with a first-layer edge and a second-layer edge, the first-layer edge is higher than the second-layer edge, and a first gap is reserved between the first-layer edge and the second-layer edge; the outer manhole cover is mounted on the first-layer edge of the outer manhole ring and hinged to the outer manhole ring; the manhole inner well lid is installed on the second-layer edge of the manhole outer well ring along the first gap, a linkage locking mechanism and a controller are installed at the bottom of the manhole inner well lid, the linkage locking mechanism comprises a multi-fork lock, the multi-fork lock is connected with the controller, and the multi-fork lock is suitable for being inserted into an unlocking key or sending a signal to the controller so as to open or close the manhole inner well lid. The double-layer manhole cover is arranged, the linkage locking mechanism needing to be opened in an authorized mode is installed at the bottom of the manhole cover in the manhole, the anti-smashing and anti-prying performance of the manhole cover is remarkably improved, and high-performance physical protection of the urban tube well is achieved.

Description

Technical Field

[0001] This utility model relates to the field of manhole cover technology, specifically to a new type of anti-pry manhole cover. Background Technology

[0002] Urban underground pipelines are vital infrastructure and "lifelines" ensuring the operation of cities. Ensuring their safe, intelligent, and efficient operation is a crucial foundation for high-quality urban development. With the advancement of modernization and rapid urbanization, manhole covers, as an important component of public infrastructure, are widely used in urban roads and streets. Currently, due to inadequate manhole cover sensing measures and various monitoring and control methods, and a lack of effective real-time management, accidents caused by indiscriminate opening and environmental influences occur frequently. This not only affects the normal operation of manhole cover equipment but also poses significant dangers to vehicles and pedestrians on the road, leading to personal injury, economic losses, and a major negative impact on social stability.

[0003] In current practical applications, most outdoor urban pipeline manhole covers are installed on motor vehicle lanes. These ductile iron manhole covers meet the D400 standard in the national standard GB / T23858-2009. These covers generally have poor anti-theft and anti-pry performance. Outdoor construction workers can easily pry them up using common tools such as steel bars or crowbars, making it easy to enter the underground manhole. Although existing ductile iron five-proof manhole covers have undergone some design improvements, such as adding spring arm structures and hanging anti-fall nets on the manhole ring, the safety risks cannot be completely eliminated.

[0004] Overall, existing manhole covers have the following shortcomings:

[0005] I. Issues concerning personal safety and property

[0006] (1) Currently, ductile iron manhole covers and rings, along with lightweight plastic covers covering the rings, constitute the most common manhole cover system. Abnormal opening, displacement, and loss of ductile iron manhole covers occur frequently, leading to personal injury and property damage accidents. This not only affects the normal operation of urban infrastructure but also poses a serious threat to the lives of citizens. Specifically, ductile iron manhole covers lack effective anti-opening devices, resulting in abnormal opening, displacement, and loss. Lightweight plastic covers are made of inferior materials with insufficient strength and toughness, making them prone to damage when subjected to external forces such as vehicle crushing or heavy object impacts, potentially causing people or objects to fall into the manhole.

[0007] II. Resource Protection and Security Issues

[0008] Most existing outdoor manhole covers are round and lack intelligent monitoring equipment and locks. For users in the telecommunications industry, the manholes beneath these covers often contain numerous fiber optic cables, making them vulnerable to being pried open by unauthorized individuals. This allows for cable theft and other unethical activities, compromising the safety of the pipelines within the manhole. This is particularly problematic for telecommunications manholes, potentially impacting information security. Furthermore, these unethical actions can also damage the manhole cover itself.

[0009] Given the safety hazards existing in the current technology, in order to achieve intelligent management of manhole covers, we need to propose a brand-new intelligent anti-pry manhole cover. Utility Model Content

[0010] In view of the shortcomings of the existing technology, the main purpose of this utility model is to provide a new type of anti-pry manhole cover to solve the problem that the existing manhole cover sensing measures and various monitoring and control methods are not perfect, resulting in poor manhole protection performance.

[0011] The technical solution of this utility model is as follows:

[0012] A new type of anti-pry manhole cover includes:

[0013] The manhole outer well ring is suitable for circumferential installation at the wellhead of an underground pipe well. The inner edge of the manhole outer well ring is provided with a first edge and a second edge. The first edge is higher than the second edge, and a first gap is reserved between the first edge and the second edge.

[0014] The manhole cover is installed on the outer edge of the manhole ring and is hinged to the manhole ring.

[0015] The manhole cover is installed along the second layer of the outer manhole ring along the first gap. A linkage locking mechanism and a controller are installed at the bottom of the manhole cover. The linkage locking mechanism includes a multi-fork lock, which is adapted to insert an unlocking key and directly open or close the manhole cover when the unlocking key is rotated. The multi-fork lock is also connected to the controller and is adapted to send signals to the controller. The controller is connected to a mobile terminal, which is adapted to receive signals and control the controller to send instructions to the multi-fork lock to open or close the manhole cover.

[0016] Preferably, the multi-fork lock includes multiple locking rods, which are radially arranged at the bottom of the manhole cover. The multiple locking rods can simultaneously extend or retract along the outer edge of the bottom surface of the manhole cover when the unlocking key is rotated. When the other end of the multiple locking rods extends along the outer edge of the bottom surface of the manhole cover to below the second edge, the manhole cover is locked. When the other end of the multiple locking rods retracts from below the second edge to the bottom surface of the manhole cover, the manhole cover is opened.

[0017] Preferably, the multi-fork lock further includes:

[0018] A lock cylinder is installed at the center of the bottom surface of the manhole cover. The lock cylinder includes a lock cylinder hole and a lock cylinder shaft, wherein the lock cylinder shaft includes an inner shaft and an outer shaft. The inner shaft is coaxially arranged with the lock cylinder hole, and the outer shaft is sleeved outside the inner shaft. A locking component is provided between the outer shaft and the inner shaft. The locking component is adapted to directly lock the outer shaft and the inner shaft when the unlocking key is inserted into the lock cylinder hole and rotated, so that the outer shaft and the inner shaft rotate synchronously. Alternatively, when the unlocking key is inserted into the lock cylinder hole and rotated, a signal is connected to the controller, and the controller controls the locking component to lock the outer shaft and the inner shaft, so that the outer shaft and the inner shaft rotate synchronously.

[0019] A turntable is located at the bottom of the lock cylinder and is fixedly connected to the outer shaft, and is adapted to rotate synchronously with the outer shaft;

[0020] Multiple connecting rods are evenly distributed in a radiating pattern along the outer periphery of the turntable. One end of each connecting rod is fixedly connected to the outer edge of the turntable, and the other end is hinged to one end of multiple locking rods.

[0021] Preferably, the locking component includes:

[0022] A locking groove is circumferentially disposed on the outer wall of the inner shaft;

[0023] A locking channel is provided on the outer shaft, directly opposite the locking slot;

[0024] A locking pin has one end located in the locking channel and a magnet at the end, and a drive motor installed at the other end. The locking pin is adapted to move along the locking channel to the end and lock in the locking groove when the unlocking key is inserted into the lock cylinder hole, by using the magnet at its end to match the unlocking key. Alternatively, it can move along the locking channel to the end and lock in the locking groove under the drive of the drive motor.

[0025] A drive motor is connected to a controller signal and is adapted to drive the drive motor via the controller.

[0026] Preferably, the unlocking key includes a magnetic emergency key and a multi-angled tool key. The magnetic emergency key is adapted to be paired with a magnet when inserted into the lock cylinder hole to drive the locking pin to move along the locking channel until it engages and is fixed with the locking groove. The multi-angled tool key is adapted to be inserted into the lock cylinder hole and rotated to signal the controller. The controller transmits the signal to the mobile terminal. The mobile terminal receives the signal and, based on analysis, controls the controller to send a drive command to the drive motor to drive the locking pin to move along the locking channel until it engages and is fixed with the locking groove.

[0027] Preferably, the multi-fork lock further includes multiple guide seats, which are matched with multiple locking rods. The multiple guide seats are welded to the bottom of the manhole cover. Each guide seat is provided with a guide hole, which is suitable for inserting the locking rod.

[0028] Preferably, the manhole cover has a lock hole in the center, which is directly opposite the lock cylinder hole, so that the key can be inserted into the lock cylinder hole through the lock hole.

[0029] In some embodiments, the novel anti-pry manhole cover further includes a battery box installed at the bottom of the manhole cover and electrically connected to the controller.

[0030] In some embodiments, the novel anti-pry manhole cover further includes a protective cover installed at the bottom of the manhole cover, and the linkage locking mechanism and controller are fixedly installed inside the protective cover.

[0031] In some embodiments, the novel anti-pry manhole cover also includes a handle, which is arched and symmetrically welded to the top of the manhole cover.

[0032] The advantages of this utility model compared to the prior art are as follows: This utility model proposes a novel anti-pry manhole cover. The manhole cover adopts a double-layer design, which provides an additional protective layer. Even if the outer manhole cover (outer manhole cover) is damaged or pried, the inner manhole cover (inner manhole cover) can still remain closed, preventing unauthorized access and potential dangers.

[0033] This utility model installs an authorized-access linkage locking mechanism at the bottom of the manhole cover, which significantly improves the manhole cover's anti-smashing and anti-pry performance, achieving high-performance physical protection for urban manholes.

[0034] This invention enables remote opening and closing control of manhole covers by connecting a linkage locking mechanism with a controller, and connecting the controller with a mobile terminal.

[0035] The manhole cover of this utility model can be opened or closed in two ways. First, a multi-pronged lock can be inserted into a multi-pronged tool key and rotated to send a signal to the controller. The controller then sends the signal to a mobile terminal, which in turn controls the controller to send instructions to the multi-pronged lock to intelligently open or close the manhole cover. Second, if the intelligent unlocking of the multi-pronged lock fails, the manhole cover can be opened or closed directly by inserting a magnetic emergency key into the multi-pronged lock and rotating it.

[0036] This invention features two unlocking modes. When the intelligent unlocking system fails due to power outages, system malfunctions, or signal interference, the magnetic emergency key provides a reliable backup unlocking solution. This ensures that maintenance personnel or emergency service personnel can quickly open the manhole cover to carry out necessary repairs, inspections, or rescue operations without relying on the intelligent system.

[0037] This utility model designs two unlocking modes, realizing the controllable locking and unlocking of the well opening using the manhole cover, thus ensuring the safety of the manhole cover and well resources.

[0038] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Furthermore, implementation of any embodiment of this utility model does not imply the simultaneous possession or achievement of multiple or all of the aforementioned beneficial effects. Attached Figure Description

[0039] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0040] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0041] Figure 1 This is a front view of a novel anti-pry manhole cover according to some embodiments of the present invention;

[0042] Figure 2 This is a top view of a novel anti-pry manhole cover according to some embodiments of the present invention;

[0043] Figure 3 This is an axonometric view of a novel anti-pry manhole cover according to some embodiments of the present invention;

[0044] Figure 4 This is a left view of a novel anti-pry manhole cover according to some embodiments of the present invention;

[0045] Figure 5 for Figure 4Enlarged diagram of the bottom structure;

[0046] Figure 6 This is a schematic diagram of the overall structure of a multi-fork lock according to some embodiments of the present invention;

[0047] Figure 7 This is a schematic diagram of the overall structure of the lock cylinder and locking assembly in some embodiments of this utility model.

[0048] Marked in the image:

[0049] 1-Outer manhole cover; 2-Outer manhole ring; 201-First-layer edge; 202-Second-layer edge; 3-Inner manhole cover; 301-Unlock hole; 4-Multi-fork lock; 401-Locking rod; 402-Locking cylinder; 4021-Locking cylinder hole; 4022-Inner shaft; 4023-Outer shaft; 403-Turntable; 404-Connecting rod; 405-Guide seat; 4051-Guide hole; 5-Controller; 6-Locking assembly; 601-Locking groove; 602-Locking channel; 603-Locking pin; 604-Drive motor; 605-Magnet; 7-Locking bracket; 8-Battery box; 9-Protective cover; 10-Handle; 11-Nameplate; 12-Antenna box; 13-Drain hole.

[0050] The same or corresponding marks in the diagram indicate the same or corresponding parts. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Here, the illustrative embodiments of this utility model and their descriptions are used to explain this utility model, but are not intended to limit this utility model.

[0052] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0053] It should be understood that the terms "comprising / including," "consisting of," or any other variations are intended to cover non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements includes not only those elements but may also include, where necessary, other elements not expressly listed, or elements inherent to such a product, apparatus, process, or method. Without further limitation, an element defined by the phrases "comprising / including," "consisting of," does not exclude the presence of additional identical elements in the product, apparatus, process, or method that includes said element.

[0054] It should also be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device, component or structure referred to must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation on this utility model.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0056] The present invention will now be described in detail with reference to preferred embodiments.

[0057] like Figures 1 to 7 As shown, this utility model proposes a novel anti-pry manhole cover, which includes an outer manhole cover 1, an outer manhole ring 2, an inner manhole cover 3, a linkage locking mechanism, and a controller 5. This utility model adopts a double-layer manhole cover design, where the outer manhole cover 1 is a common manhole cover used in the prior art, and the inner manhole cover 3 is an intelligent manhole cover requiring authorized opening. The combined use of the two significantly improves the anti-smashing and anti-pry performance of the manhole cover itself, achieving high-performance physical protection for urban manholes.

[0058] See Figures 1 to 5 The manhole outer ring 2 is suitable for circumferential installation at the wellhead of an underground manhole, and its upper part is flush with the ground. The inner edge (inner edge) of the manhole outer ring 2 has a first-layer edge 201 and a second-layer edge 202. The first-layer edge 201 and the second-layer edge 202 are stepped, with the first-layer edge 201 higher than the second-layer edge 202. The second-layer edge 202 has a certain thickness and width. A first gap (the height of the step) is reserved between the first-layer edge 201 and the second-layer edge 202.

[0059] The manhole cover 1 is installed on the outer edge 201 of the manhole ring 2 and is hinged to the manhole ring 2. This hinged connection allows the manhole cover 1 to adapt to different ground conditions and installation environments. For example, on uneven ground, the hinged design ensures that the manhole cover can be opened and closed smoothly, and that the upper part of the manhole cover 1 is flush with the road surface when closed. In this invention, the manhole cover 1 is preferably hinged to the manhole ring 2. This hinged connection allows the manhole cover 1 to rotate only around the hinge axis, preventing free rotation or flipping, thus ensuring that the manhole cover will not detach from the ring under external force.

[0060] The manhole cover 3 is installed along the first gap on the second edge 202 of the outer manhole ring 2. A linkage locking mechanism and a controller 5 are installed at the bottom of the manhole cover 3. The linkage locking mechanism includes a multi-fork lock 4, which is electrically or signal-connected to the controller 5. The multi-fork lock is adapted to insert an unlocking key and directly open or close the manhole cover 3 when the unlocking key is rotated, or to send a signal to the controller 5. The controller 5 is connected to a mobile terminal, which is adapted to receive the signals transmitted by the controller 5 and, through analysis, control the controller 5 to send instructions to the multi-fork lock 4 to open or close the manhole cover 3.

[0061] In this invention, a linkage locking mechanism and a controller are installed at the bottom of the manhole cover, and the controller is connected to a mobile terminal. Users can remotely monitor the status of the manhole cover, including whether it is open or has been subjected to abnormal vibrations such as impacts. Users can also control the status of the manhole cover, including opening and closing operations, via remote communication signals and near-field Bluetooth signals. This intelligent control improves operational convenience, reduces labor costs, and makes manhole cover management more efficient. Furthermore, the combination of the linkage locking mechanism and the controller ensures access control for manhole cover operations. Only authorized users can send commands via the mobile terminal to open or close the manhole cover, effectively preventing unauthorized access and potential security risks.

[0062] This utility model's manhole cover features two unlocking modes. One mode involves sending a signal to a controller, which then transmits the signal to a mobile terminal. The mobile terminal controls the controller to send commands to the multi-pronged lock to intelligently open or close the manhole cover. The other mode, in the event of a power outage, system malfunction, or signal interference, allows the manhole cover to be directly opened or closed by inserting a key into the multi-pronged lock and turning it. This design achieves controllable locking and opening of the manhole opening, ensuring the safety of the manhole cover and manhole resources. Furthermore, it allows maintenance personnel or emergency service personnel to quickly open the manhole cover for necessary repairs, inspections, or rescue operations without relying on the intelligent system.

[0063] As is easily understood, the multi-fork lock 4 can be a two-fork lock, a three-fork lock, or a multi-fork lock. This utility model will be described in detail using a three-fork lock as an example.

[0064] See Figure 2 The three-pronged lock includes three locking rods 401, which are radially arranged at the bottom of the manhole cover 3, and the included angle between each locking rod 401 is 120 degrees.

[0065] One end of the three locking rods 401 is connected to the three-pronged lock 01, and the other end can extend or retract along the bottom edge of the manhole cover 3 when the unlocking key is rotated in a preset direction, or send an unlocking or locking signal to the controller 5 when the unlocking key is rotated in a preset direction. The controller 5 sends the signal to the mobile terminal, and the mobile terminal sends an unlocking or locking command to the three-pronged lock 01 through the controller 5, so that the other end of the three locking rods 401 can extend or retract along the bottom edge of the manhole cover 3 at the same time.

[0066] In this utility model, when the other end of the three locking rods 401 extends along the outer edge of the bottom surface of the manhole cover 3 to below the second layer edge 202, the manhole cover 3 is locked. When the other end of the three locking rods 401 retracts from below the second layer edge 202 to the bottom surface of the manhole cover 3, the manhole cover 3 is opened.

[0067] It's easy to understand that the preset direction here can be either clockwise or counterclockwise, depending on the actual direction designed for use.

[0068] In some embodiments, the distance by which each locking rod 401 extends below the edge of the second layer 202 is preferably 42mm. A certain gap, such as 13mm, is reserved between each locking rod 401 and the second layer 202, forming a structure similar to a door latch.

[0069] In some embodiments, the diameter of each locking rod 401 is preferably 20mm. The locking rod 401 is made of stainless steel and has good impact resistance. When the manhole cover 3 is locked onto the second edge 202, if unauthorized personnel try to pry the manhole cover 3 without unlocking it, even if the manhole cover 3 itself is bent, it will not be able to bend the locking rod 401 to detach the manhole cover 3 from the second edge 202 of the outer manhole ring 2. Therefore, the locking rod 401 can effectively ensure the safety performance of the manhole cover 3 after it is locked.

[0070] In this invention, the multi-fork lock 4 is an evolution of the crank-slider mechanism principle. See also Figure 6 , Figure 7The multi-fork lock 4 also includes a lock cylinder 402, a turntable 403, and connecting rods 404. The lock cylinder 402 is installed at the center of the bottom surface of the manhole cover 3. The turntable 403 is located at the bottom of the lock cylinder 402 and can rotate synchronously with the lock cylinder 402 under certain conditions. Three connecting rods 404 are evenly distributed in a radiating pattern along the outer periphery of the turntable 403. One end of each connecting rod 404 is fixedly connected to the outer edge of the turntable 403, and the other end is hinged to the other end of each of the three locking rods 401. The three connecting rods 404, under the rotation of the turntable 403, can drive the multiple locking rods 401 to make linear movements extending or retracting along the outer edge of the bottom surface of the manhole cover 3. For example, when the key turns the lock cylinder 402 clockwise, causing the turntable 403 to rotate clockwise, the three locking rods 401 retract at the outer edge of the bottom surface of the manhole cover 3 inside the manhole. When the key turns the lock cylinder 402 counterclockwise, causing the turntable 403 to rotate counterclockwise, the three locking rods 401 extend at the outer edge of the bottom surface of the manhole cover 3 inside the manhole.

[0071] See Figures 5 to 7 The multi-fork lock 4 also includes multiple guide seats 405. Preferably, three guide seats 405 are used in this invention. The three guide seats 405 are matched with three locking rods 401, meaning one locking rod 401 corresponds to one guide seat 405. The three guide seats 405 are welded to the bottom of the manhole cover 3, corresponding to the three locking rods 401. Each guide seat 405 has a guide hole 4051 suitable for inserting the locking rod 401. In this invention, the guide seats 405 provide linear guidance for the locking rods 401.

[0072] In this invention, the multi-fork lock 4 has electronic control capabilities. It is controlled by the controller 5 and can send open or closed signals back to the controller 5. In addition, the controller 5 can be equipped with various sensor devices, including but not limited to angle sensors, acceleration sensors, temperature and humidity sensors, vibration sensors, etc., and receive and process signals from various sensors.

[0073] See also Figure 7 The lock cylinder 402 includes a lock cylinder hole 4021 and a lock cylinder shaft, wherein the lock cylinder shaft includes an inner shaft 4022 and an outer shaft 4023. Specifically, the inner shaft 4022 is coaxially arranged with the lock cylinder hole 4021, and the outer shaft 4023 is sleeved on the outside of the inner shaft 4022. A locking component 6 is provided between the outer shaft 4023 and the inner shaft 4022. The locking component 6 is adapted to directly lock the outer shaft 4023 and the inner shaft 4022 when the unlocking key is inserted into the lock cylinder hole 4021 and rotates, so that the outer shaft 4023 and the inner shaft 4022 rotate synchronously, or when the unlocking key is inserted into the lock cylinder hole 4021 and rotates, the signal is connected to the controller 5, and the controller 5 controls the locking component 6 to lock the outer shaft 4023 and the inner shaft 4022, so that the outer shaft 4023 and the inner shaft 4022 rotate synchronously.

[0074] In some embodiments, the locking assembly 6 includes a locking groove 601, a locking channel 602, a locking pin 603, and a drive motor 604. The locking groove 601 is circumferentially formed on the outer wall of the inner shaft 4022; the locking channel 602 is disposed on the outer shaft 4023 opposite the locking groove 601; one end of the locking pin 603 is disposed within the locking channel 602, and a magnet 605 is provided at that end; the other end is mounted with the drive motor 604. The locking pin 603 is adapted to move along the locking channel 602 to the locking groove 601 when the unlocking key is inserted into the lock cylinder hole 4021, using the magnet 605 at its end to engage with the unlocking key, or to move along the locking channel 602 to the locking groove 601 under the drive of the drive motor 604; the drive motor 604 is signal-connected to the controller 5, and is adapted to control the drive motor 604 through the controller 5 to ensure that the outer shaft 4023 and the inner shaft 4022 are locked.

[0075] In some embodiments, the unlocking key includes a magnetic emergency key and a multi-angled tool key. The magnetic emergency key is adapted to pair with a magnet 605 when inserted into the lock cylinder hole 4021, causing the locking pin 603 to move along the locking channel 602 until it engages with the locking groove 601. The multi-angled tool key is adapted to connect to the controller 5 when rotated in the lock cylinder hole 4021. The controller 5 transmits the signal to a mobile terminal, which receives the signal and, based on the analysis, controls the controller 5 to send a drive command to the drive motor 604, causing the locking pin 601 to move along the locking channel 602 until it engages with the locking groove 601, thereby locking the outer shaft 4023 and the inner shaft 4022.

[0076] In this invention, the multi-angled tool key is preferably a pure hexagonal tool key. When a pure hexagonal tool key is inserted into the lock cylinder hole 4021, the lock cylinder will always rotate freely in both forward and reverse directions because the outer shaft 4023 and the inner shaft 4022 are not locked. However, this action can be activated by the activation switch inside the lock to wake up the Bluetooth start of the controller 5, and then the dedicated APP software (mobile terminal) of the smartphone can be opened. The APP software can then connect to the controller 5 wirelessly via Bluetooth. At this time, pressing the "Unlock" button on the mobile app sends a command to the controller 5. The controller 5 sends a drive command to the drive motor 604 to move the locking pin 601 along the locking channel 602 until it engages with the locking groove 601, thereby locking the outer shaft 4023 and the inner shaft 4022. Then, when the pure hexagonal tool key is rotated clockwise, the rotation of the lock cylinder 402 will drive the turntable 403 to rotate clockwise. The turntable 403 then drives the connecting rod 404 to rotate. The connecting rod 404 drives the locking rod 401 to retract at the bottom outer edge of the manhole cover 3 inside the manhole, thus realizing the unlocking action. After unlocking, the "lock status" on the mobile app will show that it is in the open state.

[0077] In this invention, since the magnetic emergency key does not require the electronic control performance of the lock, the lock can be opened by inserting the magnetic emergency key into the lock cylinder hole 4021 and turning the emergency key clockwise at a certain rotation speed. To prevent damage, the magnetic emergency key is only used to unlock the multi-fork lock when the electronic unlocking fails.

[0078] In some embodiments, a lock hole 301 is provided in the center of the manhole cover 3, and the lock hole 301 is positioned opposite the lock cylinder hole 4021, which is suitable for the key to be inserted into the lock cylinder hole 4021 through the lock hole 301.

[0079] In one specific embodiment, when the unlocking key is inserted into the lock cylinder hole 4021 through the unlocking hole 301, turning the key clockwise can open the three-pronged lock. After the three-pronged lock is opened, the turntable 403 will pull the three locking rods 401 to retract linearly towards the lock cylinder hole 4021. When the retraction value of the locking rods 401 is greater than 42mm, the locking rods 401 are completely disengaged from the second-layer edge 202, at which point the manhole cover 3 can be lifted (the door is opened). Conversely, turning the unlocking key counterclockwise can close the three-pronged lock. During the closing process, the turntable 403 will push the three locking rods 401 to extend linearly away from the lock cylinder hole 4021 (the door is closed), and when the locking rods 401 extend to 42mm, the locking rods 401 are stuck below the second-layer edge 202, and the manhole cover 3 can be locked onto the second-layer edge 202 of the manhole outer ring 2.

[0080] In some embodiments, see Figure 2 The bottom of the manhole cover 3 is equipped with a lock mounting bracket 7, which is suitable for installing a multi-fork lock 4.

[0081] In some embodiments, the novel anti-pry manhole cover also includes a battery box 8. The battery box 8 is installed at the bottom of the manhole cover 3. The battery box 8 is electrically connected to the controller 5, that is, there is a power line connecting the controller 5 and the battery box 8 to continuously supply power to the controller 5.

[0082] In this invention, the controller 5 has a remote communication control module. As long as the controller 5 is powered on, the remote module can communicate with the remote online platform (mobile terminal). This enables two functions: first, the real-time status of the manhole cover 3, including its lock / unlock status, can be reported to the platform periodically; second, the mobile terminal can be used to send an unlocking command to the controller, and on-site personnel can then use a pure hexagonal key to unlock it, eliminating the need to send commands from the smartphone, thus achieving remote control unlocking.

[0083] In some embodiments, the novel anti-pry manhole cover further includes a protective cover 9. The protective cover 9 is installed at the bottom of the manhole cover 3. Specifically, the outer edge of the protective cover 9 is provided with a connecting lug, which is adapted to be bolted to the manhole cover 3 by screws passing through the connecting lug.

[0084] The protective cover 9 houses the controller 5, battery box 8, and / or multi-fork lock 4 to prevent external impacts and ensure stable operation of the lock.

[0085] In some embodiments, the protective cover 9 is provided with three notches so that the three connecting rods 404 of the multi-fork lock 4 can pass through the notches.

[0086] In some embodiments, the novel anti-pry manhole cover also includes a handle 10. See also Figure 3 The handle 10 is arched and symmetrically welded to the top of the manhole cover 3 inside the manhole, and is used to lift the manhole cover 3 inside the manhole.

[0087] In some embodiments, see Figure 2 , Figure 3 The top of the manhole cover 3 is also equipped with a nameplate 11, an antenna box 12, and a drainage hole 13, among other components or equipment. In practical applications, the selection and configuration should be based on specific circumstances.

[0088] It will be readily understood by those skilled in the art that, without conflict, the above-mentioned preferred solutions can be freely combined and superimposed.

[0089] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel anti-pry manhole cover, characterized in that, include: The manhole outer well ring is suitable for circumferential installation at the wellhead of an underground pipe well. The inner edge of the manhole outer well ring is provided with a first edge and a second edge. The first edge is higher than the second edge, and a first gap is reserved between the first edge and the second edge. The manhole cover is installed on the outer edge of the manhole ring and is hinged to the manhole ring. The manhole cover is installed along the second layer of the outer manhole ring along the first gap. A linkage locking mechanism and a controller are installed at the bottom of the manhole cover. The linkage locking mechanism includes a multi-fork lock, which is adapted to insert an unlocking key and directly open or close the manhole cover when the unlocking key is rotated. The multi-fork lock is also connected to the controller and is adapted to send signals to the controller. The controller is connected to a mobile terminal, which is adapted to receive signals and control the controller to send instructions to the multi-fork lock to open or close the manhole cover.

2. The novel anti-pry manhole cover according to claim 1, characterized in that, The multi-forked lock includes multiple locking rods, which are radially arranged at the bottom of the manhole cover. The multiple locking rods can simultaneously extend or retract along the outer edge of the bottom surface of the manhole cover when the unlocking key is rotated. When the other end of the multiple locking rods extends along the outer edge of the bottom surface of the manhole cover to below the second edge, the manhole cover is locked. When the other end of the multiple locking rods retracts from below the second edge to the bottom surface of the manhole cover, the manhole cover is opened.

3. The novel anti-pry manhole cover according to claim 2, characterized in that, The multi-fork lock also includes: A lock cylinder is installed at the center of the bottom surface of the manhole cover. The lock cylinder includes a lock cylinder hole and a lock cylinder shaft, wherein the lock cylinder shaft includes an inner shaft and an outer shaft. The inner shaft is coaxially arranged with the lock cylinder hole, and the outer shaft is sleeved outside the inner shaft. A locking component is provided between the outer shaft and the inner shaft. The locking component is adapted to directly lock the outer shaft and the inner shaft when the unlocking key is inserted into the lock cylinder hole and rotated, so that the outer shaft and the inner shaft rotate synchronously. Alternatively, when the unlocking key is inserted into the lock cylinder hole and rotated, a signal is connected to the controller, and the controller controls the locking component to lock the outer shaft and the inner shaft, so that the outer shaft and the inner shaft rotate synchronously. A turntable is located at the bottom of the lock cylinder and is fixedly connected to the outer shaft, and is adapted to rotate synchronously with the outer shaft; Multiple connecting rods are evenly distributed in a radiating pattern along the outer periphery of the turntable. One end of each connecting rod is fixedly connected to the outer edge of the turntable, and the other end is hinged to one end of multiple locking rods.

4. The novel anti-pry manhole cover according to claim 3, characterized in that, The locking component includes: A locking groove is circumferentially disposed on the outer wall of the inner shaft; A locking channel is provided on the outer shaft, directly opposite the locking slot; A locking pin has one end located in the locking channel and a magnet at the end, and a drive motor installed at the other end. The locking pin is adapted to move along the locking channel to the end and lock in the locking groove when the unlocking key is inserted into the lock cylinder hole, by using the magnet at its end to match the unlocking key. Alternatively, it can move along the locking channel to the end and lock in the locking groove under the drive of the drive motor. A drive motor is connected to a controller signal and is adapted to drive the drive motor via the controller.

5. The novel anti-pry manhole cover according to claim 4, characterized in that, The unlocking key includes a magnetic emergency key and a multi-angled tool key. The magnetic emergency key is adapted to be inserted into the lock cylinder hole and paired with a magnet to drive the locking pin to move along the locking channel until it engages and is fixed with the locking slot. The multi-angled tool key is adapted to be inserted into the lock cylinder hole and rotated to signal the controller. The controller transmits the signal to the mobile terminal. The mobile terminal receives the signal and, based on the analysis, controls the controller to send a drive command to the drive motor to drive the locking pin to move along the locking channel until it engages and is fixed with the locking slot.

6. The novel anti-pry manhole cover according to claim 3, characterized in that, The multi-fork lock also includes multiple guide seats, which are matched with multiple locking rods. The multiple guide seats are welded to the bottom of the manhole cover. Each guide seat is provided with a guide hole, which is suitable for inserting the locking rod.

7. The novel anti-pry manhole cover according to claim 3, characterized in that, A lock hole is provided in the center of the manhole cover, and the lock hole is positioned directly opposite the lock cylinder hole, so that the unlocking key can be inserted into the lock cylinder hole through the lock hole.

8. The novel anti-pry manhole cover according to any one of claims 1 to 7, characterized in that, The new anti-pry manhole cover also includes a battery box, which is installed at the bottom of the manhole cover and is electrically connected to the controller.

9. The novel anti-pry manhole cover according to any one of claims 1 to 7, characterized in that, The new anti-pry manhole cover also includes a protective cover, which is installed at the bottom of the manhole cover inside the manhole. The linkage locking mechanism and controller are fixedly installed inside the protective cover.

10. The novel anti-pry manhole cover according to any one of claims 1 to 7, characterized in that, The new anti-pry manhole cover also includes a handle, which is arched and symmetrically welded to the top of the manhole cover.

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