Safety protection device for cable wellhead to go up and down

Abstract

The utility model relates to a cable well mouth up-down safety protection device which comprises a well lid plate fixed to a cable well mouth, and a surrounding plate is arranged on the peripheral side of the well lid plate; the single chip microcomputer is arranged on the coaming; the first warning device comprises a reflective strip and a light bar which are arranged on the surrounding plate, and the light bar is connected with the single chip microcomputer through a first data line; and the second warning device comprises a monitoring assembly and a warning assembly which are arranged on the surrounding plate, and the monitoring assembly and the warning assembly are both connected with the single-chip microcomputer through a second data line. The reflective strip and the light bar of the first warning device can play a striking role at night, the second warning device monitors the surrounding environment and the trend of people in real time and can monitor the approaching people in time, and the warning assembly gives out an audible and visual alarm to prompt the approaching people when detecting that the people approach. The design of the cable well mouth up-down safety protection device can effectively improve the safety alertness of people to the cable well and reduce the occurrence rate of potential safety accidents.

Description

Technical Field

[0001] This application relates to the field of cable wellhead safety protection technology, and in particular to a safety protection device for cable wellheads at the top and bottom. Background Technology

[0002] Cable wells are generally used when cables are laid in straight lines or at bends, and they serve as an important access point for underground cabling. As power facilities continue to increase, the number of cable wells is also increasing.

[0003] Existing safety protection devices for cable wells lack warning functions for people near the cable wells, which makes it easy for people to accidentally approach the cable wells and cause damage, or trip and fall into the wells, resulting in life-threatening situations. Utility Model Content

[0004] This application provides a safety protection device for cable well openings, addressing the problem in related technologies where cable wells lack safety protection devices, easily causing nearby personnel to accidentally approach and damage the well, trip and get injured, or even fall into the well.

[0005] In a first aspect, a safety protection device for cable wellheads is provided, comprising a well cover plate fixed to the cable wellhead, and a surrounding plate provided around the well cover plate; a microcontroller disposed on the surrounding plate; a first warning device comprising a reflective strip and a light strip disposed on the surrounding plate, the light strip being connected to the microcontroller via a first data cable; and a second warning device comprising a monitoring component and an alerting component disposed on the surrounding plate, both being connected to the microcontroller via a second data cable.

[0006] In some embodiments, the enclosure includes a first upright plate and two second upright plates; the first upright plate is arranged perpendicular to the manhole cover plate, and the two second upright plates are respectively fixed perpendicularly to both sides of the first upright plate to form an enclosure structure with one side open.

[0007] In some embodiments, reflective strips are provided on the side of the first and second upright plates away from the manhole cover, and two light strips are respectively provided on the side of the two second upright plates close to the manhole cover; the monitoring component is provided on the first upright plate, and the warning component is provided on one of the second upright plates.

[0008] In some embodiments, a first microcontroller and a second microcontroller are respectively provided on the side of the two second vertical plates away from the manhole cover plate; the first microcontroller is connected to the first warning device via a first data line, and the second microcontroller is connected to the second warning device via a second data line; both the first and second microcontrollers are provided with protective shells, and the inner walls of the protective shells are provided with batteries, which are respectively connected to the first and second microcontrollers.

[0009] In some embodiments, the monitoring components include an infrared sensor and a four-way monitor; the infrared sensor is located on the side of the first upright plate near the manhole cover, and the four-way monitor is located on the top of the first upright plate.

[0010] In some embodiments, the alerting components include a flashlight and a speaker; wherein a second upright plate has a fixing block on its top edge near the manhole cover, and the flashlight and speaker are located on top of the fixing block.

[0011] In some embodiments, the manhole cover has an opening, and a protective cover is hinged to the opening; the protective cover has a first handle at both the top and bottom.

[0012] In some embodiments, the protective cover is provided with a rotating rod that penetrates the protective cover, and both ends of the rotating rod are provided with rotating disks. The rotating rod that protrudes from the top of the manhole cover is provided with a supporting rod parallel to the manhole cover. The top of the manhole cover is provided with a limiting block, and the limiting block is provided with a supporting groove for supporting the supporting rod. The rotating rod and the protective cover are connected by a torsion spring so that the supporting rod is supported against the supporting groove.

[0013] In some embodiments, the bottom of the manhole cover is sealed with a fixing ring, and a lighting lamp is installed in the fixing ring; the bottom of the fixing ring is provided with a connecting ring, and multiple fixing nails are fixedly installed through the connecting ring and fixed to the ground.

[0014] In some embodiments, the top surface of the manhole cover is provided with multiple second handles.

[0015] The beneficial effects of the technical solution provided in this application include:

[0016] This application provides a safety protection device for cable well openings, mainly composed of a well cover, a surrounding panel, a microcontroller, and two warning devices. These components work together to provide safety protection for the cable well opening. The well cover is fixed to the cable well opening to prevent personnel and unidentified objects from falling in. The surrounding panel surrounds the well cover, preventing accidental approach and providing an environmental foundation for the subsequent installation of other necessary components. The microcontroller acts as a central controller, processing the operational data of the warning devices. The reflective strips and light strips of the first warning device are highly visible at night, preventing accidental collisions and enhancing the surrounding warning effect, thus improving safety. The second warning device monitors the surrounding environment and personnel movement in real time, promptly detecting approaching personnel, and the warning component emits an audible and visual alarm when it detects approaching personnel. This design of a safety protection device for cable well openings can effectively improve public awareness of cable well safety and reduce the incidence of potential safety accidents. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of the upper and lower safety protection device for cable wellhead from a first top view provided in the embodiments of this application;

[0019] Figure 2 A schematic diagram of the upper and lower safety protection device structure of the cable wellhead from a second top view provided in the embodiments of this application;

[0020] Figure 3 Provided for the embodiments of this application Figure 2 Enlarged view of point A;

[0021] Figure 4 The embodiments of this application provide a safety protection device for the upper and lower parts of a cable wellhead from a lower perspective.

[0022] In the diagram: 1. Manhole cover; 2. Enclosure; 21. First upright plate; 22. Second upright plate; 3. Reflective strip; 4. Light strip; 5. Monitoring component; 51. Infrared sensor; 52. Four-way monitor; 6. Alarm component; 61. Flashlight; 62. Speaker; 7. Protective shell; 8. Fixing block; 9. Protective cover; 91. First handle; 10. Rotating rod; 101. Supporting rod; 11. Rotating disc; 12. Limiting block; 121. Supporting groove; 13. Fixing ring; 14. Lighting light; 15. Connecting ring; 16. Fixing nail; 17. Second handle. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] This application provides a safety protection device for cable well openings, which can solve the problem in related technologies where cable wells lack safety protection devices, which can easily cause nearby personnel to accidentally approach and damage the well, trip and get injured, or even fall into the well.

[0025] Since the safety protection devices for cable wells lack warning functions for people near the cable wells, making it easy for people to unintentionally approach and damage the cable wells, or trip and get injured, or even fall into the wells and endanger their lives, a warning component that can be linked with the cable wells should be designed. First, a fixing plate that can be fixed to the opening of the cable well should be designed, and a first protective barrier should be built around the fixing plate. Second, multiple warning or monitoring components should be set on the protective barrier to remind other unrelated personnel not to approach unintentionally. This would solve the problem in related technologies where cable wells lack safety protection devices, making it easy for people nearby to unintentionally approach and damage the cable wells, trip and get injured, or even fall into the wells.

[0026] refer to Figure 1-4 ,in Figure 1 This is a schematic diagram of the structure of a cable wellhead safety protection device from a top-down perspective; a cable wellhead safety protection device includes a well cover plate 1, which is fixed to the cable wellhead, and a surrounding plate 2 is provided around the well cover plate 1; a microcontroller, which is mounted on the surrounding plate 2; a first warning device, which includes a reflective strip 3 and a light strip 4 mounted on the surrounding plate 2, the light strip 4 being connected to the microcontroller via a first data cable; and a second warning device, which includes a monitoring component 5 and an alerting component 6 mounted on the surrounding plate 2, both of which are connected to the microcontroller via a second data cable.

[0027] This structural design features a manhole cover 1 fixed to the cable well opening to prevent personnel and unidentified objects from falling into the well. A surrounding panel 2 encircles the manhole cover 1, preventing accidental approach and providing an environmental foundation for the subsequent installation of other necessary components. A microcontroller acts as the central controller, processing the operational data of the warning devices. The reflective strip 3 and light strip 4 of the first warning device are highly visible at night, preventing accidental collisions, enhancing the surrounding warning effect, and improving safety. The second warning device monitors the surrounding environment and personnel movements in real time, promptly detecting approaching personnel. The alert component 6 emits an audible and visual alarm when it detects approaching personnel. This design of safety protection devices for cable well openings effectively improves public awareness of cable well safety and reduces the incidence of potential accidents. When personnel or objects approach the cable well opening, the monitoring component 5 detects the situation and transmits the information to the microcontroller. Based on the received data, the microcontroller drives the alert component 6 to operate, first emitting a flashing warning through the light strip 4, and then outputting an audible and visual alarm through the alert component 6. The reflective strip 3 enhances the surrounding warning effect under any lighting conditions, improving safety.

[0028] In some preferred embodiments, the enclosure 2 includes a first upright plate 21 and two second upright plates 22; the first upright plate 21 is arranged perpendicular to the manhole cover plate 1, and the two second upright plates 22 are respectively fixed perpendicularly to both sides of the first upright plate 21 to form an enclosure structure with one side open.

[0029] This structural design, with enclosure 2 composed of a first upright plate 21 and two second upright plates 22, increases structural stability and protects the manhole cover 1, forming a semi-enclosed protective space with openings for staff access. The first and second upright plates 21 and 22 are designed to be at least 1 meter high to prevent accidental access to the manhole opening. The openings allow operators to quickly access and inspect the cable manhole, while the enclosure effectively prevents unauthorized personnel from approaching, avoiding accidents. This frame structure provides excellent support, effectively resisting external influences such as wind and reducing the risk of damage. This enclosure 2 design not only enhances the safety protection of the cable manhole opening but also provides flexible access options, making maintenance and management more efficient and safer.

[0030] In some preferred embodiments, reflective strips 3 are provided on the side of the first upright plate 21 and the second upright plate 22 away from the manhole cover plate 1, and two light strips 4 are respectively provided on the side of the two second upright plates 22 close to the manhole cover plate 1; the monitoring component 5 is provided on the first upright plate 21, and the warning component 6 is provided on one of the second upright plates 22.

[0031] Through this structural design, reflective strips 3 are installed on the side of the first upright plate 21 and the two second upright plates 22 away from the manhole cover plate 1 to ensure visibility at night or in low-light environments, improve the warning effect of the enclosure in low-light environments, and prevent passersby from approaching the manhole opening. Light strips 4 are respectively installed on the side of the two second upright plates 22 closest to the manhole cover plate 1, i.e., opposite each other, and the emitted light also serves as a warning. A monitoring component 5 is installed on the first upright plate 21 to monitor the condition of the opening and the approach of people in the surrounding area. A warning component 6 is installed on one of the second upright plates 22 and is an audible and visual alarm device. When the monitoring component 5 detects an anomaly, it immediately triggers the alarm, warning surrounding personnel and notifying maintenance personnel. The combination of reflective strips 3 and light strips 4 ensures enhanced visibility and warning function of the enclosure 2 under various lighting conditions. Through this design and configuration, the enclosure 2 not only improves the visual protection and warning effect of the cable manhole opening but also enhances the overall auditory warning effect through the monitoring and warning system, while also providing a safer working environment for surrounding workers and reducing potential safety hazards.

[0032] In some preferred embodiments, a first microcontroller and a second microcontroller are respectively provided on the side of the two second upright plates 22 away from the manhole cover plate 1; the first microcontroller is connected to the first warning device through a first data line, and the second microcontroller is connected to the second warning device through a second data line; both the first microcontroller and the second microcontroller are provided with protective shells 7, and the inner wall of each protective shell 7 is provided with a battery, which is connected to the first microcontroller and the second microcontroller respectively.

[0033] This structural design provides each microcontroller with an independent protective casing, protecting it from damage caused by external environmental factors. The casing design also facilitates the replacement and maintenance of the built-in power supply, the battery. The battery, housed within the casing, provides continuous and independent power to the two microcontrollers. The batteries are connected to the first and second microcontrollers via dedicated circuitry, ensuring the system operates normally over extended periods and guaranteeing timely response from the warning devices. The modular design simplifies and simplifies the replacement and maintenance of the microcontrollers and warning devices. By configuring an independent microcontroller and battery on each second vertical plate 22 and connecting them to their respective warning devices, this embodiment enhances the security monitoring capabilities of the enclosure 2.

[0034] In some preferred embodiments, the monitoring component 5 includes an infrared sensor 51 and a four-way monitor 52; the infrared sensor 51 is located on the side of the first upright plate 21 near the manhole cover plate 1, and the four-way monitor 52 is located on the top of the first upright plate 21.

[0035] Through this structural design, the monitoring component 5 consists of two main parts: an infrared sensor 51 and a four-way monitor 52. The infrared sensor 51 is mainly used to detect objects or people approaching the manhole cover, and can monitor in real time whether there are abnormal approaches or potential dangers. The four-way monitor is responsible for 360° all-round monitoring of the surrounding environment, collecting real-time image data, and interacting with the one-way camera to perform dynamic monitoring through machine vision technology, promptly detecting and recording abnormal behavior. The combination of the infrared sensor 51 and the four-way monitor 52 ensures comprehensive and real-time monitoring of the area around the manhole cover, reducing the risk of accidents. Once the infrared sensor 51 detects an anomaly, the system can automatically activate the warning device through the first microcontroller, issue an alarm in real time, and simultaneously trigger the four-way monitor 52 to record the scene of the incident or send an alarm to the remote monitoring center. The design of the infrared sensor 51 and the four-way monitor 52 makes the replacement and maintenance process simple and can be completed without professional tools.

[0036] In some preferred embodiments, the alert component 6 includes a flashlight 61 and a speaker 62; wherein a second upright plate 22 is provided with a fixing block 8 on the top edge of the side near the manhole cover plate 1, and the flashlight 61 and speaker 62 are located on the top of the fixing block 8.

[0037] With this structural design, the fixing block 8 supports the flashlight 61 and the speaker 62. When the monitoring component 5 (such as the infrared sensor 51) detects an abnormality approaching the manhole cover, the flashlight 61 immediately activates, using a strong light source to attract the attention of those nearby. Its flashing frequency and intensity are adjustable to adapt to different environments and safety requirements. The speaker 62 follows the flashlight 61's action, emitting an alarm sound or pre-recorded warning messages to effectively warn of potential threats. A linkage mechanism is formed between the alerting component 6 and the monitoring component 5. When the infrared sensor 51 detects an anomaly, the first microcontroller synchronously triggers the flashlight 61 and the speaker 62, allowing them to operate simultaneously within a very short time, improving the reliability and timeliness of the alarm. Utilizing visual flashing and audible alerts ensures that even in high-noise environments or low-light conditions, those nearby can promptly notice potential dangers.

[0038] In some preferred embodiments, the manhole cover 1 has an opening, and a protective cover 9 is hinged to the opening; the top and bottom of the protective cover 9 are provided with a first handle 91.

[0039] This structural design provides an easy access point to the wellbore, allowing direct entry during maintenance and repair while preventing debris from falling in. The opening size is rationally designed according to actual installation requirements, ensuring smooth access for personnel and equipment while avoiding unnecessary safety hazards. The protective cover 9 is hinged to the opening of the manhole cover plate 1, allowing for easy opening and closing and providing a convenient operating experience. Both the top and bottom of the protective cover 9 are equipped with first handles 91. This design aims to allow operators to grip the cover more easily when opening or closing, reducing the force required during the opening process.

[0040] In some preferred embodiments, the protective cover 9 is provided with a rotating rod 10 that passes through the protective cover 9, and both ends of the rotating rod 10 are provided with rotating disks 11. The rotating rod 10 that protrudes from the top of the manhole cover plate 1 is provided with a supporting rod 101 parallel to the manhole cover plate 1. The top of the manhole cover plate 1 is provided with a limiting block 12, and the limiting block 12 is provided with a supporting groove 121 for supporting the supporting rod 101. The rotating rod 10 and the protective cover 9 are connected by a torsion spring so that the supporting rod 101 is supported against the supporting groove 121.

[0041] Through this structural design, the rotating rod 10 passes through the protective cover 9 and connects to the rotating disks 11 at both ends, making it easier and less strenuous to open and close the protective cover. The design of the rotating rod 10 can effectively control the opening angle of the protective cover 9. The abutment rod 101 is set parallel to the manhole cover plate 1 and can effectively match the abutment groove 121 of the limiting block 12. The design of the torsion spring allows the abutment rod 101 to effectively abut against the abutment groove 121 on the limiting block 12 when the protective cover 9 is not under force, thereby limiting the protective cover 9. This embodiment, by combining the design of the rotating rod 10, the abutment rod 101, the limiting block 12, and the torsion spring, enhances the overall safety and operability of the manhole cover system. Through the coordinated work of these components, the opening, closing, and locking of the protective cover 9 can be easily controlled.

[0042] In some preferred embodiments, the bottom of the manhole cover plate 1 is sealed with a fixing ring 13, and a lighting lamp 14 is provided in the fixing ring 13; a connecting ring 15 is provided at the bottom of the fixing ring 13, and a plurality of fixing nails 16 are fixedly fixed through the connecting ring 15 and fixed to the ground.

[0043] With this structural design, the fixing ring 13 is located at the bottom of the manhole cover plate 1, serving to support and fix it, and providing an installation position for the subsequent lighting lamp 14. The lighting lamp 14 is integrated into the fixing ring 13, greatly enhancing visibility around the manhole cover at night or in low-light conditions. The connecting ring 15, located at the bottom of the fixing ring 13, is made of robust material to ensure it can withstand the weight of the manhole cover and external pressure. The fixing nail 16 ensures the manhole cover is firmly fixed to the ground. By adding the fixing ring 13, lighting lamp 14, connecting ring 15, and fixing nail 16 to the bottom of the manhole cover plate 1, this embodiment effectively improves the safety, stability, and convenience of the manhole cover.

[0044] In some preferred embodiments, a plurality of second handles 17 are provided on the top surface of the manhole cover 1.

[0045] This structural design, with multiple secondary handles 17, allows for easier lifting of the protective device when relocation is needed. The use of multiple secondary handles 17 does not affect the overall protective performance of the manhole cover.

[0046] The beneficial effects of this utility model include:

[0047] The manhole cover 1 is fixed to the cable well opening to prevent personnel and unidentified objects from falling into the well. The surrounding panel 2 is installed around the manhole cover 1, preventing accidental approach and providing an environmental foundation for the subsequent installation of other necessary components. The microcontroller acts as the central controller, processing the operational data of the warning devices. The reflective strip 3 and light strip 4 of the first warning device are highly visible at night, preventing accidental collisions, enhancing the surrounding warning effect, and improving safety. The second warning device monitors the surrounding environment and personnel movements in real time, promptly detecting approaching personnel, and the alert component 6 emits an audible and visual alarm when it detects approaching personnel. This design of the safety protection device at the top and bottom of the cable well opening effectively improves people's awareness of cable well safety and reduces the incidence of potential safety accidents. When personnel or objects approach the cable well opening, the monitoring component 5 detects the situation and transmits the information to the microcontroller. Based on the received data, the microcontroller drives the alert component 6 to operate, first emitting a flashing warning through the light strip 4, and then outputting an audible and visual alarm through the alert component 6. The reflective strip 3 enhances the surrounding warning effect under any lighting conditions, improving safety.

[0048] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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 between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0049] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0050] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A safety protection device for cable wellheads, characterized in that, It includes: A manhole cover (1) is fixed to the cable well opening, and a surrounding plate (2) is provided around the manhole cover (1); A microcontroller is mounted on the enclosure (2); The first warning device includes a reflective strip (3) and a light strip (4) disposed on the enclosure (2), and the light strip (4) is connected to the microcontroller via a first data cable; The second warning device includes a monitoring component (5) and an alert component (6) disposed on the enclosure (2), both of which are connected to the microcontroller via a second data line.

2. The safety protection device for cable wellheads as described in claim 1, characterized in that: The enclosure panel (2) includes a first upright panel (21) and two second upright panels (22); The first upright plate (21) is set perpendicular to the manhole cover plate (1), and the two second upright plates (22) are respectively fixed perpendicularly to both sides of the first upright plate (21) to form a fence structure with one side open.

3. The safety protection device for cable wellheads as described in claim 2, characterized in that: The first upright plate (21) and the second upright plate (22) are provided with reflective strips (3) on the side away from the manhole cover plate (1), and two light strips (4) are respectively provided on the side of the two second upright plates (22) close to the manhole cover plate (1); The monitoring component (5) is located on the first upright plate (21), and the alarm component (6) is located on one of the second upright plates (22).

4. The safety protection device for cable wellheads as described in claim 3, characterized in that: The two second vertical plates (22) are respectively provided with a first microcontroller and a second microcontroller on the side away from the manhole cover plate (1); The first microcontroller is connected to the first warning device via the first data line, and the second microcontroller is connected to the second warning device via the second data line; Both the first microcontroller and the second microcontroller are provided with protective shells (7), and the inner walls of the protective shells (7) are provided with batteries, which are respectively connected to the first microcontroller and the second microcontroller.

5. The safety protection device for cable wellheads as described in claim 3, characterized in that: The monitoring component (5) includes an infrared sensor (51) and a four-way monitor (52); The infrared sensor (51) is located on the side of the first upright plate (21) near the manhole cover plate (1), and the four-way monitoring device (52) is located on the top of the first upright plate (21).

6. The safety protection device for cable wellheads as described in claim 3, characterized in that: The alert component (6) includes a flashlight (61) and a speaker (62); One of the second upright plates (22) has a fixing block (8) on the top edge of the side near the manhole cover plate (1), and the flashlight (61) and the speaker (62) are located on the top of the fixing block (8).

7. The safety protection device for cable wellheads as described in claim 1, characterized in that: The well cover plate (1) has an opening, and a protective cover (9) is hinged to the opening; The protective cover (9) is provided with a first handle (91) at both the top and bottom.

8. The safety protection device for cable wellheads as described in claim 7, characterized in that: The protective cover (9) is provided with a rotating rod (10) that passes through the protective cover (9). Both ends of the rotating rod (10) are provided with rotating disks (11). The rotating rod (10) that is exposed at the top of the manhole cover plate (1) is provided with a support rod (101) parallel to the manhole cover plate (1). The top of the manhole cover plate (1) is provided with a limiting block (12), and the limiting block (12) is provided with a supporting groove (121) for supporting the supporting rod (101); The rotating rod (10) is connected to the protective cover (9) by a torsion spring to hold the abutting rod (101) against the abutting groove (121).

9. The safety protection device for cable wellheads as described in claim 8, characterized in that: The bottom of the manhole cover (1) is sealed with a fixing ring (13), and a lighting lamp (14) is provided in the fixing ring (13); The bottom of the fixing ring (13) is provided with a connecting ring (15), and multiple fixing nails (16) are fixedly fixed through the connecting ring (15) and the fixing nails (16) are fixed to the ground.

10. The safety protection device for cable wellheads as described in claim 1, characterized in that: The top surface of the manhole cover (1) is provided with multiple second handles (17).

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