Safety device for electrical engineering

Abstract

This invention relates to the field of power engineering protection technology and discloses a safety protection device for power engineering, including a frame. A fixed protective shield is slidably connected to the outer wall of the frame, and an insulating glove is fixedly connected to the outer wall of the fixed protective shield. A telescopic protective shield is also fixedly connected to the outer wall of the frame, with its upper surface fixedly connected to the lower surface of the fixed protective shield. An observation mechanism is provided on the outer wall of the frame, and casters are fixedly connected to the bottom of the frame. A toolbox is fixedly connected to the outer wall of the frame, and a clamp is fixedly connected to the inner wall of the toolbox, with tools mounted on the clamp. The fixed and telescopic protective shields provide protection, while the insulating glove provides reliable shielding for operation, improving the versatility and convenience of live-line work. By fixing the toolbox to the side of the frame near the insulating glove, operators can quickly access and retrieve tools while protected by the protective shields.

Description

Technical Field

[0001] This invention relates to the field of power engineering protection technology, specifically a safety protection device for power engineering. Background Technology

[0002] With the rapid development of my country's power system and the continuous expansion of its power grid coverage, the workload of daily inspection, maintenance, and emergency repair of power equipment is constantly increasing. To ensure the personal safety of personnel working on live lines, mobile insulating protective devices have become an indispensable core equipment at power maintenance sites. Through a combination of physical isolation and insulating protection, they can effectively block injuries to operators from arc flashes, falling objects from heights, and strong electric field radiation. Existing mobile protective devices typically integrate basic components such as protective shields, moving mechanisms, and toolboxes. The toolbox, used to store various maintenance tools, is an important component ensuring the smooth operation of the work.

[0003] However, existing safety protection devices for power engineering have design flaws in tool retrieval and placement, failing to fully adapt to the special scenarios of live-line work and the actual operational needs of operators. Firstly, the toolboxes of most devices are improperly positioned, typically located on the back, side, bottom of the frame, or far from the operating area, creating a significant distance from the operator's natural range of arm movement when wearing insulated gloves. Since live-line work requires operators to remain within the effective protection range of the shield at all times, and it is strictly forbidden to extend the head, torso, or other body parts outside the shield, operators are forced to make large turns, bends, or arm extensions when retrieving tools. This is not only extremely inconvenient but also results in temporary exposure of parts of the body to a hazardous environment, significantly increasing the risk of electric shock and foreign object injuries. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a safety protection device for power engineering, which solves the problems of inconvenience in retrieving and placing tools and temporary exposure of parts of the body to dangerous environments when operators are required to remain within the effective protection range of the protective shield during live-line work.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a safety protection device for power engineering, comprising a frame, a fixed protective shield slidably connected to the outer wall of the frame, an insulating glove fixedly connected to the outer wall of the fixed protective shield, a telescopic protective shield fixedly connected to the outer wall of the frame, the upper surface of the telescopic protective shield being fixedly connected to the lower surface of the fixed protective shield; an observation mechanism provided on the outer wall of the frame, and casters fixedly connected to the bottom of the frame; a toolbox fixedly connected to the outer wall of the frame, a clamp fixedly connected to the inner wall of the toolbox, and a tool for use mounted on the clamp.

[0006] Preferably, the observation mechanism includes an observation window embedded inside the fixed protective shield and a lighting lamp fixedly installed on the outer wall of the fixed protective shield.

[0007] Preferably, one end of a safety rope is fixedly connected to the outer wall of the tool, and the other end of the safety rope is fixedly connected to a connector.

[0008] Preferably, the inner wall of the toolbox is fixedly connected to an outer shell, the safety rope passes through the through hole and extends into the interior of the outer shell and is fixedly connected to the connector, one end of the conductor rod is fixedly connected to the outer wall of the connector, and the other end of the conductor rod is fixedly connected to a guide post; an insulating cylinder is fixedly sleeved on the outside of the conductor rod, and the outer wall of the insulating cylinder and the guide post are slidably connected to the inner wall of the outer shell.

[0009] Preferably, a grounding wire is fixedly connected to the inner wall of the outer casing, the top end of the grounding wire is located on the sliding path of the guide post, and a grounding block is fixedly connected to the bottom end of the grounding wire; a tension spring is connected between the connector and the outer casing, the tension spring is sleeved on the outside of the conductor rod, and the two ends of the tension spring are fixedly connected to the connector and the outer casing respectively.

[0010] Preferably, a closed plate is slidably connected to the side of the vehicle frame away from the insulating glove, a slider is fixedly connected to the outer wall of the closed plate, and a groove is provided on the outer wall of the vehicle frame to slide and adapt to the slider, with the slider slidably disposed inside the groove.

[0011] Preferably, one end of a connecting rod is rotatably connected to the outer wall of the slider, and the other end of the connecting rod is rotatably connected to a drive ring. A sliding rod is fixedly connected to the outer wall of the drive ring. A limiting groove is provided on the outer wall of the fixed protective shield to slide and adapt to the sliding rod. The sliding rod is slidably disposed inside the limiting groove. A spring is provided between the sliding rod and the fixed protective shield. The spring is sleeved on the outside of the sliding rod, and both ends of the spring are fixedly connected to the sliding rod and the fixed protective shield, respectively.

[0012] Preferably, a rotating shaft is rotatably connected to the outer wall of the toolbox, and a baffle for opening and closing the toolbox opening is fixedly connected to the outer wall of the rotating shaft. One end of the rotating shaft extends to the outside of the toolbox and is fixedly connected to a gear.

[0013] Preferably, the first gear is meshed with a second gear, the center of the second gear is fixedly connected to a second rotating shaft, and the second rotating shaft is rotatably connected to the outer wall of the toolbox; a rocker arm is fixedly connected to the outer wall of the second rotating shaft, and a slider is fixedly connected to the free end of the rocker arm; an indicator plate is slidably connected to the outer wall of the frame in the vertical direction, and a groove is provided on the outer wall of the indicator plate, and the slider is slidably disposed inside the groove.

[0014] Preferably, it also includes an environmental monitoring unit for collecting electrical parameters and light intensity at the work site; The environmental monitoring unit includes an electric field sensor and a light sensor, both of which are fixedly installed on the outer wall of the fixed protective shield.

[0015] Working principle: The device is moved to the working position via casters at the bottom of the chassis. The fixed protective shield and the telescopic protective shield work together to form a continuous, closed, insulated protective surface. The fixed protective shield can be raised, lowered, and locked vertically along the chassis, while the telescopic protective shield can be extended or retracted to accommodate electrical equipment of different heights. The operator stands behind the protective shield, wearing insulated gloves, and performs live maintenance through the observation window, achieving physical insulation isolation between personnel and live parts.

[0016] The tool is connected to a sliding assembly inside the housing via a safety cord with a built-in metal conductive core. During normal operation, a tension spring separates the guide post from the grounding wire, keeping the tool insulated from the ground. When the tool is accidentally dropped and pulled, the safety cord pulls the connector to overcome the tension spring force, causing the guide post to slide along the housing and make contact with the top of the grounding wire, thus establishing a connection. The induced charge on the tool is instantly discharged to the ground through the grounding wire and grounding block. After the tension is released, the tension spring automatically resets and disconnects the grounding, providing dual protection against falls and electric shock.

[0017] The rear enclosure panel of the chassis is connected to a slider via a drive ring, connecting rod, and other components. When the operator pushes forward through the drive ring with their hand, the spring is compressed and the sliding mechanism drives the enclosure panel to slide open. When the operator enters and their arm continues to extend into the insulating gloves, the pushing force is released, the spring returns to its original position, causing the drive ring to retract and automatically pull the enclosure panel to slide open and close, sealing the operating space and preventing injury from external electric arcs or flying debris. This also avoids safety gaps caused by the operator forgetting to close the door.

[0018] The toolbox cover's flip-up and opening / closing mechanism is converted into a direct up / down position indicator via a gear and linkage mechanism. Flipping the cover drives the rotating shaft and gear one to rotate, which in turn drives a rocker arm to swing. A slider on the rocker arm slides within an inclined groove on the indicator plate, thus driving the indicator plate to rise and fall vertically along the frame. The operator does not need to look down to observe the toolbox; the status of the cover can be clearly determined simply by the height of the indicator plate, preventing tools from being exposed or forgotten.

[0019] This invention provides a safety protection device for power engineering. It has the following beneficial effects: 1. This invention provides protection through a fixed protective shield and a telescopic protective shield. The insulated gloves and observation window provide operation and visibility under reliable shielding, improving the versatility and convenience of live-line work. By fixing the toolbox to the side of the frame near the insulated gloves, the operator can quickly access and use the tools under the shielding of the protective shield.

[0020] 2. The invention, in conjunction with the safety rope connected to the tail of the tool, further prevents the tool from accidentally falling to live parts or the ground, ensuring the safety and efficiency of the entire tool retrieval process; when the tool is accidentally dropped and subjected to impact and pull, or when the operator actively applies a pulling force exceeding the pre-tension, the safety rope will automatically pull the guide post to conduct electricity with the grounding wire, and the induced charge or residual charge on the tool will be instantly discharged to the ground through the safety rope, conductor rod, grounding wire and grounding block.

[0021] 3. This invention uses a purely mechanical mechanism of drive ring, connecting rod and slider to link the operator's hand into the insulating glove with the opening and closing of the sealing plate, avoiding the lack of protection caused by the operator forgetting to close the sealing plate. At the same time, there is no need to wear insulating gloves for additional manual operation, ensuring the full enclosure of the protective space during the operation without affecting the convenience of operation.

[0022] 4. This invention uses a gear transmission and rocker-slider mechanism to convert the opening and closing action of the toolbox baffle into the vertical sliding of the indicator plate. This allows the operator to clearly determine the opening and closing status of the baffle by the position of the indicator plate without directly observing the toolbox, effectively preventing safety hazards caused by tools being exposed and forgotten. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present invention; Figure 2 This is a partial structural diagram of the sealing plate of the present invention; Figure 3 This is a partial structural diagram of the observation window of the present invention; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a partial structural diagram of the baffle of the present invention; Figure 6 for Figure 5 Enlarged view of point B in the middle; Figure 7 This is a cross-sectional view of the internal structure of the toolbox of the present invention; Figure 8 This is a partial structural diagram of the safety rope of the present invention; Figure 9 for Figure 8 Enlarged diagram of point C in the middle.

[0024] The components include: 1. Frame; 2. Fixed protective shield; 3. Insulating gloves; 4. Telescopic protective shield; 5. Observation mechanism; 501. Observation window; 502. Lighting lamp; 6. Casters; 7. Toolbox; 8. Clamps; 9. Tools; 10. Safety rope; 11. Connector; 12. Housing; 13. Conductor rod; 14. Insulating cylinder; 15. Guide post; 16. Tension spring; 17. Grounding wire; 18. Grounding block; 19. Enclosure plate; 20. Slider one; 21. Slide groove one; 22. Connecting rod; 23. Drive ring; 24. Slide rod; 25. Limiting groove; 26. Spring; 27. Rotating shaft one; 28. Baffle; 29. ​​Gear one; 30. Gear two; 31. Rotating shaft two; 32. Rocker arm; 33. Slider two; 34. Slide rail; 35. Indicator plate; 36. Slide groove two. Detailed Implementation

[0025] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see the appendix Figure 1 -Appendix Figure 9 This invention provides a safety protection device for power engineering, including a frame 1. A fixed protective shield 2 is slidably connected to the outer wall of the frame 1. An insulating glove 3 is fixedly connected to the outer wall of the fixed protective shield 2. A telescopic protective shield 4 is fixedly connected to the outer wall of the frame 1, and the upper surface of the telescopic protective shield 4 is fixedly connected to the lower surface of the fixed protective shield 2. An observation mechanism 5 is provided on the outer wall of the frame 1. A caster wheel 6 is fixedly connected to the bottom of the frame 1. A toolbox 7 is fixedly connected to the outer wall of the frame 1. A clamp 8 is fixedly connected to the inner wall of the toolbox 7, and a tool 9 is installed in the clamp 8.

[0027] Specifically, the safety protection device includes a frame 1 serving as a mobile base. The four corners of the frame 1 are equipped with locking casters 6 to facilitate moving the device to the power maintenance work position and ensuring stable parking. A fixed protective shield 2 is slidably connected to the outer wall of the frame 1 via a vertical guide rail mechanism. The fixed protective shield 2 can be raised and lowered along the height of the frame 1 and locked at a predetermined height using existing technologies. For example, a screw-nut mechanism utilizes the self-locking characteristic of a trapezoidal thread, allowing the fixed protective shield 2 to be reliably locked at any raising or lowering position via hand cranking; a gas spring support locking mechanism uses a built-in locking valve, allowing the fixed protective shield 2 to be smoothly raised, lowered, and instantly positioned by operating an unlocking handle. Both methods can be flexibly selected according to operational needs. A telescopic protective shield 4 is also fixedly connected to the outer wall of the frame 1. The telescopic protective shield 4 is an insulated, retractable structure. Its upper surface is fixedly connected to the lower surface of the fixed protective shield 2, and its lower part is fixedly connected to the upper surface of the frame 1, thus forming a continuous and closed protective surface between the fixed protective shield 2 and the frame 1. When the fixed protective shield 2 is raised or lowered, the telescopic protective shield 4 extends or retracts accordingly to adapt to different working surfaces. An insulating glove 3 is fixedly connected to the outer wall of the fixed protective shield 2. The fixed protective shield 2 has a through-hole for the operator's arm to pass through. The open end of the insulating glove 3 is sealed and fixed to the periphery of the through-hole, allowing the operator to perform external live-line work under the shield of the fixed protective shield 2. An observation mechanism 5 is provided on the outer wall of the frame 1 to provide a working field of vision. A toolbox 7 is fixedly connected to the frame 1 near the insulating glove 3. A clamp 8 is fixedly installed inside the toolbox 7. The clamp 8 can adopt an elastic clamping structure to securely hold the tools 9, preventing them from falling off during transportation. The tools 9 are housed in the toolbox 7, including voltage detectors, insulating pliers, wrenches, and other tools required for the operation. The entire device adapts to electrical equipment of different heights by adjusting the height of the fixed protective shield 2 and the telescopic protective shield 4. The frame 1 is pushed to the working position, and the operator enters from the side of the frame 1 away from the insulating gloves 3. With both hands inside the insulating gloves 3, and with the assistance of the observation mechanism 5, the operator uses the tools 9 in the toolbox 7 to carry out maintenance operations, which improves the safety and convenience of live-line work.

[0028] The observation mechanism 5 includes an observation window 501 embedded inside the fixed protective shield 2, and a lighting lamp 502 fixedly installed on the outer wall of the fixed protective shield 2.

[0029] Specifically, the observation mechanism 5 includes an observation window 501 embedded inside the fixed protective shield 2, and a lighting lamp 502 fixedly installed on the outer wall of the fixed protective shield 2. The observation window 501 is made of a transparent insulating board with high light transmittance and sufficient mechanical strength. Its perimeter is sealed to the fixed protective shield 2 using sealing strips and a pressure frame, ensuring visibility while preventing external moisture or foreign objects from entering the inner side of the shield. The lighting lamp 502 is a light assembly composed of multiple LEDs, fixed to the outer wall of the fixed protective shield 2 by an angle-adjustable bracket. It projects light into the working area in front of the insulating gloves 3, allowing the operator to clearly observe equipment details even in low-light conditions. The working status of the lighting lamp 502 can be manually controlled or integrated with a subsequent environmental monitoring unit to turn it on and off and adjust its brightness according to the ambient light intensity, thereby ensuring that the observation window 501 always provides good visual conditions, improving operational accuracy and safety. The observation window 501 and the lighting lamp 502 together constitute a reliable visual operation system.

[0030] One end of a safety rope 10 is fixedly connected to the outer wall of tool 9, and the other end of the safety rope 10 is fixedly connected to a connector 11.

[0031] Specifically, one end of a safety rope 10 is fixedly connected to the outer wall of the tool 9, and the other end of the safety rope 10 is fixedly connected to a connector 11. The safety rope 10 consists of a high-strength tensile fiber braided layer and a metal conductive core embedded within the braided layer. The fiber braided layer is covered with an insulating sheath, ensuring that the safety rope 10 is insulated from both inside and out under normal working conditions. The metal conductive core is electrically connected to the metal parts of the tool 9, for example, by welding or crimping to the exposed conductive parts of the tool. Simultaneously, the conductive core is fixedly connected at the end of the safety rope 10 to a conductive terminal within the connector 11. The connector 11 is a rigid joint with conductive function. The safety rope 10 serves a dual purpose: firstly, as a physical anti-loss rope, preventing the tool 9 from accidentally falling to the ground or live parts during operation; secondly, as part of a conductive path, providing a low-impedance path for subsequent induced charge discharge. When tool 9 is held and operated normally, safety rope 10 is in a slack or moderately stretched state, which does not hinder operation; once the tool is dropped or is intentionally pulled by the operator, safety rope 10 will be tightened.

[0032] The inner wall of the toolbox 7 is fixedly connected to the outer shell 12. The safety rope 10 passes through the through hole and extends into the interior of the outer shell 12 and is fixedly connected to the connector 11. One end of the conductor rod 13 is fixedly connected to the outer wall of the connector 11, and the other end of the conductor rod 13 is fixedly connected to the guide post 15. An insulating cylinder 14 is fixedly sleeved on the outside of the conductor rod 13. The outer wall of the insulating cylinder 14 and the guide post 15 are slidably connected to the inner wall of the outer shell 12.

[0033] Specifically, a housing 12 is fixedly connected to the inner wall of the toolbox 7. The housing 12 is made of insulating material and has a guide cavity inside. A through hole is opened on the side wall of the housing 12, through which the safety rope 10 extends into the housing 12 and is fixedly connected to the connector 11 located inside the housing 12. One end of the conductor rod 13, made of conductive metal, is fixedly connected to the outer wall of the connector 11, and the other end of the conductor rod 13 is fixedly connected to the guide post 15. An insulating cylinder 14 is fixedly sleeved on the outside of the conductor rod 13. The insulating cylinder 14 and the conductor rod 13 are tightly fitted, and the section of the conductor rod 13 except for the connecting end and the guide post end is completely covered with insulation. The outer wall of the insulating cylinder 14 is slidably fitted with the inner wall of the housing 12, and the outer wall of the guide post 15 is also slidably fitted with the inner wall of the housing 12, so that the connector 11, conductor rod 13, insulating cylinder 14 and guide post 15 can slide together along the axial direction of the housing 12. In the initial state, under the action of the tension spring 16, the guide post 15 is in a position separated from the grounding wire 17. When the safety rope 10 is pulled, the connector 11 moves away from the through hole, causing the conductor rod 13 and the guide post 15 to slide. The insulating cylinder 14 moves accordingly and always ensures that the conductor rod 13 is insulated from the inner wall of the outer shell 12.

[0034] A grounding wire 17 is fixedly connected to the inner wall of the outer casing 12. The top end of the grounding wire 17 is located on the sliding path of the guide post 15, and a grounding block 18 is fixedly connected to the bottom end of the grounding wire 17. A tension spring 16 is connected between the connector 11 and the outer casing 12. The tension spring 16 is sleeved on the outside of the conductor rod 13, and the two ends of the tension spring 16 are fixedly connected to the connector 11 and the outer casing 12 respectively.

[0035] Specifically, a grounding wire 17 is fixedly connected to the inner wall of the outer casing 12. The top end of the grounding wire 17 is located on the sliding path of the guide post 15, and a wear-resistant stationary contact can be installed at this top end. The bottom end of the grounding wire 17 extends downward and is fixedly connected to a grounding block 18. The grounding block 18 is a metal block that can reliably ground, which is placed on the ground or connected to a grounding stake during operation. A tension spring 16 is connected between the connector 11 and the inner wall of the outer casing 12. The tension spring 16 is sleeved on the outside of the conductor rod 13, and its two ends are fixed to the end face of the connector 11 and the inner wall of the outer casing 12, respectively. In the initial position, the tension spring 16 pulls the connector 11 toward the through hole, keeping the guide post 15 detached from the top end of the grounding wire 17. At this time, the tool 9 forms a suspended conductor through the conductor in the safety rope 10 and the conductor rod 13. However, since it is not grounded, the tool is still insulated from the ground, and live operation can be safely performed. When tool 9 is dropped and subjected to impact or pulling, or when the operator applies a force exceeding the preload of spring 16, safety rope 10 pulls connector 11 to overcome the force of spring 16. Guide post 15 moves forward and eventually contacts the top of grounding wire 17, establishing electrical connection. At this point, induced or residual charge on the tool is discharged to the ground via the safety rope 10 conductor, connector 11, conductor rod 13, guide post 15, grounding wire 17, and grounding block 18, eliminating the risk of electric shock. When the pulling force is released, spring 16 pushes connector 11 back to its original position, guide post 15 disengages from grounding wire 17, and the tool automatically regains its insulation from the ground. This process requires no additional operation, ensuring instantaneous discharge of induced electricity and ease of use.

[0036] A closed plate 19 is slidably connected to the side of the frame 1 away from the insulating glove 3. A slider 20 is fixedly connected to the outer wall of the closed plate 19. A groove 21 is opened on the outer wall of the frame 1 to slide and adapt to the slider 20. The slider 20 is slidably disposed inside the groove 21.

[0037] Specifically, a closed plate 19 is slidably connected to the side of the frame 1 away from the insulating glove 3, serving as the access passage for the operator. The closed plate 19 is made of insulating material, with a slider 20 fixedly connected to its outer wall. A vertical groove 21 is formed on the outer wall of the frame 1; the groove 21 is a dovetail groove, and the slider 20 has a matching dovetail cross-section and is slidably embedded within the groove 21, thus supporting and guiding the sliding of the closed plate 19. When the slider 20 slides downwards along the groove 21, the closed plate 19 moves downwards accordingly, opening the opening on that side of the frame 1 for the operator to enter. When the slider 20 slides upwards, the closed plate 19 moves upwards, closing the opening. In its closed state, the closed plate 19 forms a relatively enclosed protective space inside the frame 1, effectively isolating the operator from potential hazards such as electric arcs and flying foreign objects, further enhancing the safety protection level. Once the operator enters, the enclosure 19 can automatically reset and close under the action of the mechanism to ensure the integrity of the protection during the operation.

[0038] One end of a connecting rod 22 is rotatably connected to the outer wall of slider 20, and the other end of the connecting rod 22 is rotatably connected to a drive ring 23. A sliding rod 24 is fixedly connected to the outer wall of the drive ring 23. A limiting groove 25 is provided on the outer wall of the fixed protective shield 2 to slide and adapt to the sliding rod 24. The sliding rod 24 is slidably disposed inside the limiting groove 25. A spring 26 is provided between the sliding rod 24 and the fixed protective shield 2. The spring 26 is sleeved on the outside of the sliding rod 24, and both ends of the spring 26 are fixedly connected to the sliding rod 24 and the fixed protective shield 2, respectively.

[0039] Specifically, to facilitate the operator's control of the opening and closing of the sealing plate 19 while wearing insulating gloves 3, one end of a connecting rod 22 is rotatably connected to the outer wall of the slider 20, and the other end of the connecting rod 22 is rotatably connected to a drive ring 23. The drive ring 23 is a ring handle, located inside the fixed protective shield 2 near the hand hole. A sliding rod 24 is fixedly connected to the outer wall of the drive ring 23. The interior of the fixed protective shield 2 has a limiting groove 25 that slides and adapts to the sliding rod 24, and the sliding rod 24 is slidably disposed in the limiting groove 25. A spring 26 is provided between the sliding rod 24 and the fixed protective shield 2. The spring 26 is sleeved on the outside of the sliding rod 24, and both ends of the spring 26 are fixed to the boss on the sliding rod 24 and the end wall of the limiting groove 25 of the fixed protective shield 2, respectively. When the operator prepares to work, their hand passes through the drive ring 23 and pushes forward. The drive ring 23 drives the slide rod 24 to slide along the limiting groove 25 and compress the spring 26. Simultaneously, through the connecting rod 22, the movement of the drive ring 23 is converted into the downward sliding of the slider 20 along the slide groove 21, causing the closing plate 19 to open downward. After the operator enters the frame 1, their arm continues to extend forward through the hand hole into the insulating glove 3. At this time, the pushing force applied by the hand to the drive ring 23 can naturally decrease or be removed. The restoring force of the spring 26 pushes the slide rod 24 and the drive ring 23 to reset, which in turn drives the slider 20 to slide upward through the connecting rod 22, causing the closing plate 19 to move upward and automatically close the opening. This avoids the lack of protection caused by forgetting to close the closing plate 19.

[0040] The outer wall of the toolbox 7 is rotatably connected to a pivot 27. The outer wall of the pivot 27 is fixedly connected to a baffle 28 for opening and closing the toolbox 7. One end of the pivot 27 extends to the outside of the toolbox 7 and is fixedly connected to a gear 29.

[0041] Specifically, the toolbox 7 is located on the side of the frame 1 near the insulating glove 3, with its opening facing the operator for quick access to and use of the tool 9. A pivot 27 is rotatably connected to the outer wall of the toolbox 7 via a bearing seat. The pivot 27 is horizontally arranged, and a baffle 28 for opening and closing the toolbox 7 is fixedly connected to it. The baffle 28 acts as a lid for the toolbox 7, and can be flipped upwards to open or downwards to close around the pivot 27, preventing tools from accidentally slipping out when closed. One end of the pivot 27 extends to the outside of the toolbox 7 and is fixedly connected to a gear 29. When the operator flips the baffle 28 to open or close, the pivot 27 rotates synchronously with the baffle 28, thereby driving the gear 29 to rotate, converting the opening angle of the baffle 28 into the rotation of the gear 29. A clamp 8 is fixed to the inner wall of the toolbox 7, reliably holding the tool 9 in place, preventing tool displacement even in the event of an accidental collision while the baffle 28 is open.

[0042] Gear 29 is meshed with gear 30. Gear 20 is fixedly connected to the center of shaft 31. Shaft 31 is rotatably connected to the outer wall of toolbox 7. Rocker 32 is fixedly connected to the outer wall of shaft 31. Slider 33 is fixedly connected to the free end of rocker 32. Indicator plate 35 is slidably connected to the outer wall of frame 1 in the vertical direction. Slide groove 36 is opened on the outer wall of indicator plate 35. Slider 33 is slidably disposed inside slide groove 36.

[0043] Specifically, to provide a visual indication of the opening and closing state of the baffle 28, a gear 29 is meshed with a gear 30. A rotating shaft 31 is fixedly connected to the center of gear 30, and the rotating shaft 31 is rotatably connected to the outer wall of the toolbox 7 via a bearing. A rocker arm 32 is fixedly connected to the outer wall of the rotating shaft 31, and a slider 33 is fixedly connected to the free end of the rocker arm 32. An indicator plate 35 is slidably connected to the outer wall of the frame 1 in a vertical direction. The indicator plate 35 can slide up and down by engaging with the dovetail guide rail (slide rail 34) on the frame 1 via a dovetail slider on its back. A groove 36 is formed on the outer wall of the indicator plate 35, extending horizontally or obliquely. The slider 33 is slidably disposed inside the groove 36. When the baffle 28 rotates, it drives the first shaft 27 and the first gear 29 to rotate. The second gear 30 rotates together with the second shaft 31. The rocker arm 32 swings around the second shaft 31. Simultaneously, the second slider 33 slides within the second groove 36, applying a vertical pushing or pulling force to the indicator plate 35, driving it to slide vertically. The position of the indicator plate 35 clearly indicates the opening and closing status of the baffle 28, preventing tools from being exposed or forgotten, thus avoiding potential hazards. The dovetail groove structures of both the second groove 36 and the first groove 21 serve both supporting and precise guiding functions.

[0044] It also includes an environmental monitoring unit for collecting electrical parameters and light intensity at the work site; The environmental monitoring unit includes an electric field sensor and a light sensor, both of which are fixedly installed on the outer wall of the fixed protective shield 2.

[0045] Specifically, the safety protection device also includes an environmental monitoring unit, which collects electrical parameters and light intensity at the work site to enhance the device's proactive safety warning capabilities. The environmental monitoring unit includes an electric field sensor and a light sensor, both fixedly mounted on the outer wall of the fixed protective shield 2. The electric field sensor uses inductive electrodes and signal conditioning circuits to sense the power frequency electric field strength around the work area in real time; the light sensor uses photosensitive elements to sense ambient illuminance. These sensors are electrically connected to a control board mounted on the frame 1 or the fixed protective shield 2. The control board processes and interprets the signals. When the electric field sensor detects that the electric field strength exceeds a preset safety threshold, the control board triggers an audible and visual alarm to warn operators to maintain a safe distance from live parts, and can even be used in conjunction with a locking mechanism to restrict dangerous operations. When the light sensor detects that the ambient illuminance is lower than a preset value, the control board automatically turns on the power to the lighting lamp 502 and adjusts the brightness according to the illuminance to ensure a clear view through the observation window 501. Therefore, the device not only provides passive physical protection, but also has active environmental perception and safety early warning functions, comprehensively ensuring the safety of power engineering maintenance operations.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safety protection device for power engineering, comprising a frame (1), characterized in that, The outer wall of the frame (1) is slidably connected to a fixed protective shield (2), and an insulating glove (3) is fixedly connected to the outer wall of the fixed protective shield (2). The outer wall of the frame (1) is fixedly connected to a telescopic protective shield (4), and the upper surface of the telescopic protective shield (4) is fixedly connected to the lower surface of the fixed protective shield (2). The outer wall of the frame (1) is provided with an observation mechanism (5), and the bottom of the frame (1) is fixedly connected to a universal wheel (6). The outer wall of the frame (1) is fixedly connected to a toolbox (7), and the inner wall of the toolbox (7) is fixedly connected to a clamp (8), which is equipped with a tool (9).

2. A safety protection device for power engineering according to claim 1, characterized in that, The observation mechanism (5) includes an observation window (501) embedded inside the fixed protective shield (2) and a lighting lamp (502) fixedly installed on the outer wall of the fixed protective shield (2).

3. A safety protection device for power engineering according to claim 1, characterized in that, One end of a safety rope (10) is fixedly connected to the outer wall of the tool (9), and the other end of the safety rope (10) is fixedly connected to a connector (11).

4. A safety protection device for power engineering according to claim 3, characterized in that, The toolbox (7) has an outer shell (12) fixedly connected to its inner wall. The safety rope (10) extends through the through hole into the inner wall of the outer shell (12) and is fixedly connected to the connector (11). One end of the conductor rod (13) is fixedly connected to the outer wall of the connector (11), and the other end of the conductor rod (13) is fixedly connected to the guide post (15). An insulating cylinder (14) is fixedly sleeved on the outside of the conductor rod (13). The outer wall of the insulating cylinder (14) and the guide post (15) are both slidably connected to the inner wall of the outer shell (12).

5. A safety protection device for power engineering according to claim 4, characterized in that, A grounding wire (17) is fixedly connected to the inner wall of the outer shell (12). The top end of the grounding wire (17) is located on the sliding path of the guide post (15). A grounding block (18) is fixedly connected to the bottom end of the grounding wire (17). A tension spring (16) is connected between the connector (11) and the outer shell (12). The tension spring (16) is sleeved on the outside of the conductor rod (13), and the two ends of the tension spring (16) are fixedly connected to the connector (11) and the outer shell (12) respectively.

6. A safety protection device for power engineering according to claim 5, characterized in that, A closed plate (19) is slidably connected to the side of the frame (1) away from the insulating glove (3). A slider (20) is fixedly connected to the outer wall of the closed plate (19). A groove (21) is opened on the outer wall of the frame (1) to slide and adapt to the slider (20). The slider (20) is slidably disposed inside the groove (21).

7. A safety protection device for power engineering according to claim 6, characterized in that, The outer wall of the slider (20) is rotatably connected to one end of the connecting rod (22), and the other end of the connecting rod (22) is rotatably connected to the drive ring (23). The outer wall of the drive ring (23) is fixedly connected to the slide rod (24). The outer wall of the fixed protective shield (2) is provided with a limiting groove (25) that is slidably adapted to the slide rod (24). The slide rod (24) is slidably disposed inside the limiting groove (25). A spring (26) is provided between the slide rod (24) and the fixed protective shield (2). The spring (26) is sleeved on the outside of the slide rod (24), and the two ends of the spring (26) are fixedly connected to the slide rod (24) and the fixed protective shield (2) respectively.

8. A safety protection device for power engineering according to claim 7, characterized in that, The outer wall of the toolbox (7) is rotatably connected to a pivot (27), and the outer wall of the pivot (27) is fixedly connected to a baffle (28) for opening and closing the opening of the toolbox (7). One end of the pivot (27) extends to the outside of the toolbox (7) and is fixedly connected to a gear (29).

9. A safety protection device for power engineering according to claim 8, characterized in that, Gear 1 (29) is meshed with gear 2 (30), and a rotating shaft 2 (31) is fixedly connected to the center of gear 2 (30). The rotating shaft 2 (31) is rotatably connected to the outer wall of the toolbox (7). A rocker arm (32) is fixedly connected to the outer wall of the rotating shaft 2 (31), and a slider 2 (33) is fixedly connected to the free end of the rocker arm (32). An indicator plate (35) is slidably connected to the outer wall of the frame (1) in the vertical direction. A groove 2 (36) is opened on the outer wall of the indicator plate (35), and the slider 2 (33) is slidably disposed inside the groove 2 (36).

10. A safety protection device for power engineering according to claim 1, characterized in that, It also includes an environmental monitoring unit for collecting electrical parameters and light intensity at the work site; The environmental monitoring unit includes an electric field sensor and a light sensor, both of which are fixedly installed on the outer wall of the fixed protective shield (2).

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