Explosion-proof maintenance box with protection device

Abstract

The utility model belongs to the technical field of electrical equipment, and particularly relates to an explosion-proof maintenance box with a protection device. Comprising a box body, and further comprises a protection mechanism which comprises a protection shell arranged above the box body and provided with an open top, a protection cover plate covering the top of the protection shell and a clutch assembly used for changing the clutch state between the protection shell and the protection cover plate; the cooling mechanism comprises a plurality of water inlets formed in the top of the protective cover plate, a drainage pipe with one end arranged outside the box body and the other end communicated with the interior of the protective shell, a sunshade assembly arranged in the protective cover plate and used for preventing the temperature in the box body from being too high, and a curtain plate rotationally connected to the protective cover plate and used for protecting the sunshade assembly. The explosion-proof maintenance box provided by the utility model is provided with a waterproof and high-temperature-resistant protection device, so that the safety of the explosion-proof maintenance box is improved.

Description

Technical Field

[0001] This utility model belongs to the field of electrical equipment technology, and specifically refers to an explosion-proof maintenance box with protective devices. Background Technology

[0002] In flammable and explosive environments such as oil, chemical, and natural gas plants, the maintenance of electrical equipment faces extremely high safety risks. Explosion-proof maintenance boxes with protective functions play a crucial role. Specifically designed for these special environments, they not only house maintenance tools, instruments, and spare parts, but are also key equipment ensuring the safe and orderly conduct of maintenance processes. In daily inspections at oil refineries, maintenance personnel rely on explosion-proof maintenance boxes to carry specialized tools to inspect and maintain various explosion-proof electrical equipment such as oil pumps and compressors. At natural gas refueling stations, in the event of equipment malfunction, the specialized testing instruments in the maintenance box can quickly assist in diagnosing the problem and promptly repairing it, ensuring the continuity and safety of refueling operations.

[0003] However, many explosion-proof maintenance boxes currently on the market still have significant shortcomings in dealing with extreme environments. In high-temperature environments, such as oil extraction sites in desert areas, where the sun blazes and surface temperatures often reach 40-50 degrees Celsius, ordinary explosion-proof maintenance boxes, due to their inadequate heat dissipation mechanisms, experience rapid heat buildup inside. This makes electronic components inside the box, such as explosion-proof walkie-talkies and high-precision pressure sensors, highly susceptible to performance instability or even malfunction due to prolonged high-temperature operation, severely impacting the accuracy and timeliness of maintenance work. Simultaneously, in heavy rain, existing explosion-proof maintenance boxes have limited waterproof capabilities, allowing rainwater to easily penetrate the box through the lid joints and ventilation holes. On the one hand, a damp environment accelerates the corrosion of metal tools, reducing their lifespan; on the other hand, if rainwater comes into contact with potentially hazardous electrical connections, even a tiny electrical spark in a flammable and explosive chemical environment could trigger a serious explosion, posing a significant threat to life and property. Utility Model Content

[0004] The explosion-proof maintenance box of this utility model has a protective device that integrates waterproof and high-temperature resistance to improve the safety of the explosion-proof maintenance box.

[0005] The purpose of this utility model is achieved as follows: an explosion-proof maintenance box with a protective device includes a box body and further includes:

[0006] The protective mechanism includes a protective housing located above the enclosure and having an open top, a protective cover covering the top of the protective housing, and a clutch assembly for changing the engagement / disengagement state between the protective housing and the protective cover.

[0007] The cooling mechanism includes multiple water inlets located on the top of the protective cover, a drain pipe with one end outside the box and the other end connected to the inside of the protective shell, a sunshade assembly located inside the protective cover to prevent the temperature inside the box from getting too high, and a curtain plate rotatably connected to the protective cover to protect the sunshade assembly.

[0008] The present invention is further configured such that the clutch assembly includes:

[0009] The clutch lever has one end located at the bottom of the protective housing and the other end extending longitudinally through the middle of the protective cover and above the protective cover.

[0010] A return spring is provided between the protective housing and the protective cover plate, and the return spring is sleeved on the clutch rod;

[0011] A clutch ring is located above the protective cover and is threadedly connected to the clutch rod. The clutch ring rotates to overcome the elastic force of the return spring, causing the protective cover to abut against the protective housing.

[0012] The present invention is further provided that the protective housing is provided with a flexible tube for separating the reset spring from the water.

[0013] The present invention is further configured such that the flexible tube is a corrugated tube covering the periphery of the reset spring, one end of the corrugated tube is connected to the inner bottom surface of the protective housing and the other end is connected to the bottom surface of the protective cover plate.

[0014] The present invention is further provided that each of the water inlets is provided with a barrier net to prevent foreign objects from entering.

[0015] The present invention is further configured such that the sunshade component includes:

[0016] Solar panels are installed on top of the protective cover.

[0017] A temperature sensor is installed inside the enclosure, and the temperature sensor is used to monitor the internal temperature of the enclosure in real time.

[0018] A folding awning is located inside a protective cover, and the protective cover is also provided with a drive unit for driving the folding awning to extend outward.

[0019] The present invention is further configured such that the driving unit includes:

[0020] The drive chamber is located on one side of the protective cover plate. The drive chamber is connected to the interior of the protective shell, and the shell is provided with a support plate for supporting the drive chamber.

[0021] An electric push rod is located in the drive chamber and at the rear of the drive chamber, and a connecting rod is provided at the front end of the electric push rod;

[0022] A rolling part, located in the drive chamber, is used to cooperate with a connecting rod to unfold or fold the folding awning in the front-to-back direction.

[0023] The present invention is further configured such that the rolling part includes:

[0024] The first roller is evenly arranged at the bottom of the folding awning along the front-to-back direction;

[0025] The second roller is located in the drive chamber and is positioned opposite to the first roller located at the front.

[0026] A connecting shaft is located between the first roller and the second roller, and the connecting shaft is connected to the connecting rod.

[0027] The present invention is further provided in that the drive chamber is also provided with a guide groove for preventing the roller from deviating from the predetermined path.

[0028] By adopting the above technical solution, the beneficial effects that this utility model can achieve are:

[0029] 1. By incorporating a protective shell, protective cover, and clutch assembly, the protective shell can initially block impacts from falling objects or collisions, as is common in construction sites. The protective cover, under the action of the clutch assembly, fits tightly against the protective shell. The clutch lever, return spring, and clutch ring work together. Under normal conditions, the return spring maintains a certain degree of flexibility in opening and closing the protective cover. When encountering external impact, rotating the clutch ring overcomes the return spring's force, causing the protective cover to firmly contact the protective shell, forming a stable protection that effectively protects the enclosure from damage and extends its service life.

[0030] 2. The solar panel and temperature sensor in the shading assembly work in conjunction with the folding awning and drive unit. The temperature sensor monitors the internal temperature of the enclosure in real time. In high-temperature, high-light environments, such as open-air oilfield work areas in summer, the solar panel provides power, and the drive unit drives the folding awning to extend outward. With the assistance of guide grooves, the first roller, the second roller, and the connecting shaft allow the folding awning to unfold smoothly along a predetermined path, blocking direct sunlight from hitting the enclosure, reducing the internal temperature, and preventing damage to electronic components and tools from high temperatures. This improves the adaptability of the maintenance enclosure to complex environments.

[0031] 3. The protective housing is equipped with a bellows to separate the return spring from moisture. In humid environments or when exposed to rain, one end of the bellows is connected to the bottom of the protective housing and the other end is connected to the bottom surface of the protective cover to prevent rainwater and moisture from contacting the return spring. This prevents the clutch assembly from being affected by rust or corrosion of the spring, thereby avoiding safety hazards such as electrical short circuits inside the housing caused by moisture intrusion and ensuring safe use in flammable and explosive environments. Attached Figure Description

[0032] Figure 1This is a three-dimensional structural schematic diagram of the present invention;

[0033] Figure 2 This is a top view of the structure of this utility model;

[0034] Figure 3 This is a utility model Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0035] Figure 4 This is a utility model Figure 2 Schematic diagram of the cross-sectional structure at BB;

[0036] Figure 5 This is a three-dimensional structural diagram of the sunshade component of this utility model in its working state.

[0037] The attached figures are labeled as follows: 1. Box body; 2. Protective mechanism; 20. Protective shell; 21. Protective cover plate; 3. Clutch assembly; 30. Clutch rod; 31. Return spring; 32. Clutch ring; 4. Cooling mechanism; 40. Water inlet; 41. Drain pipe; 5. Shading assembly; 50. Solar panel; 51. Temperature sensor; 52. Folding awning; 6. Curtain panel; 7. Flexible pipe; 8. Corrugated pipe; 9. Barrier net; 10. Drive unit; 100. Drive chamber; 101. Support plate; 102. Electric push rod; 103. Connecting rod; 11. Rolling part; 110. First roller; 111. Second roller; 112. Connecting shaft; 12. Guide groove. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-5 :

[0039] Example 1:

[0040] This embodiment provides an explosion-proof maintenance box with a protective device, including a box body 1, and further including:

[0041] The protective mechanism 2 includes a protective housing 20 located above the housing 1 and having an open top, a protective cover 21 covering the top of the protective housing 20, and a clutch assembly 3 for changing the engagement / disengagement state between the protective housing 20 and the protective cover 21.

[0042] The cooling mechanism 4 includes multiple water inlets 40 opened on the top of the protective cover 21, a drain pipe 41 with one end located outside the box 1 and the other end connected to the inside of the protective shell 20, a sunshade component 5 located inside the protective cover 21 to prevent the temperature inside the box 1 from getting too high, and a curtain 6 rotatably connected to the protective cover 21 to protect the sunshade component 5.

[0043] Box 1, as the core storage component of the entire explosion-proof maintenance box, is used to store various tools, instruments, spare parts, and other items required for maintenance, providing convenient access to these items and ensuring the smooth progress of maintenance work. Box 1 is typically rectangular in shape and located at the center of the entire explosion-proof maintenance box, forming the main structure around which the other components are surrounded.

[0044] The protective shell 20 provides a preliminary protective barrier for the enclosure 1, primarily protecting it from impacts from above, falling objects, and some rainwater, dust, and other foreign objects. It disperses external impacts and reduces the risk of damage to the enclosure 1 and its contents. The protective shell 20 is a shell-like structure with an open top, resembling an inverted box, and its shape is slightly larger than the top of the enclosure 1. The protective shell 20 can be fixed to the top of the enclosure 1 by welding or bolts.

[0045] The protective cover 21 works in conjunction with the protective housing 20 to further enhance the protective function. Under different working conditions, it can close the top opening of the protective housing 20 or open and close it as needed to prevent rainwater and dust from entering in large quantities and ensure a relatively stable internal environment of the housing 1. The protective cover 21 is generally a flat plate structure with a size slightly larger than the opening of the protective housing 20. The protective cover 21 covers the top opening of the protective housing 20 and is connected to the protective housing 20 through the clutch assembly 3, allowing it to move up and down and be fixed relative to the protective housing 20.

[0046] The clutch assembly 3 is used to regulate the engagement / disengagement state between the protective cover 21 and the protective housing 20 to adapt to different environmental requirements. For example, it can maintain a certain degree of ease of opening and closing during routine maintenance, and can be tightly closed when encountering severe weather or external impact to enhance the protective effect.

[0047] The water inlet 40 serves as a channel for external water to enter the interior of the protective cover 21. It is mainly used to introduce rainwater or artificially injected cold water to provide a cold source for the cooling process. By utilizing the heat absorption properties of water evaporation, it removes heat from the housing 1, thereby achieving the purpose of cooling. The water inlet 40 is generally in the shape of a circular or square hole, and can be uniformly opened on the top of the protective cover 21 and connected to the interior of the protective shell 20 by integral molding with the protective cover 21.

[0048] The drain pipe 41 is used to discharge the hot water that has absorbed heat inside the protective shell 20, allowing the water to circulate inside and outside the protective shell 20, continuously carrying away the heat emitted by the box 1 and maintaining the cooling effect. It also prevents excessive water accumulation inside the shell from affecting the normal operation of other components. The drain pipe 41 is generally a long, circular pipe with a certain degree of flexibility, facilitating bending or adjustment of its direction during installation. One end of the drain pipe 41 can be installed inside the protective shell 20 using glue or clamps, while the other end is located outside the box 1, extending to a ground drain or other collection container.

[0049] The shading component 5 reduces the amount of solar radiation heat entering the box by blocking direct sunlight from the box 1, thereby lowering the internal temperature of the box 1 and protecting the electronic components, tools, etc. inside the box from high temperature damage. Together with the water inlet 40 and the drain pipe 41, it forms a multi-directional cooling system.

[0050] The curtain panel 6 is used to prevent foreign objects or rainwater from directly entering the interior of the protective cover 21, thereby improving the service life of the sunshade assembly 5. The curtain panel 6 is generally a plate-shaped structure that matches the side of the protective cover 21. It can be rotatably connected to the top of the protective cover 21 by means of hinges or bearings, so that the curtain panel 6 covers one side of the protective cover 21 in a natural state.

[0051] Example 2:

[0052] This embodiment provides an explosion-proof maintenance box with a protective device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0053] The clutch assembly 3 includes:

[0054] The clutch lever 30 has one end located at the bottom of the protective housing 20 and the other end extending longitudinally through the middle of the protective cover plate 21 and above the protective cover plate 21.

[0055] A return spring 31 is disposed between the protective housing 20 and the protective cover plate 21, and the return spring 31 is sleeved on the clutch rod 30;

[0056] The clutch ring 32 is located above the protective cover plate 21 and is threadedly connected to the clutch rod 30. The clutch ring 32 rotates to overcome the elastic force of the return spring 31, causing the protective cover plate 21 to abut against the protective housing 20.

[0057] The clutch lever 30, as a key transmission component for the engagement and disengagement of the protective housing 20 and the protective cover plate 21, connects the two and transmits motion and force. It works in conjunction with the clutch ring 32 to allow for longitudinal positional adjustment of the protective cover plate 21 relative to the protective housing 20, adapting to different protective conditions and ensuring the timeliness and effectiveness of the enclosure 1's protection. The clutch lever 30 is generally a slender cylindrical rod with an internal threaded surface that mates with the clutch ring 32. One end of the clutch lever 30 can be installed on the inner bottom surface of the protective housing 20 by welding or bolting, while the other end extends above the protective cover plate 21 through a through-fit, allowing the protective cover plate 21 to slide freely on the clutch lever 30.

[0058] The return spring 31 provides a return force to the protective cover 21, maintaining a certain gap between the protective cover 21 and the protective housing 20 under normal conditions, facilitating daily ventilation and heat dissipation of the maintenance box and convenient access to tools. After external impact or severe weather, it can automatically drive the protective cover 21 back to its initial relative position, reducing manual intervention and improving ease of use. The return spring 31 is a helical metal spring, sleeved on the clutch rod 30, located in the space between the protective housing 20 and the protective cover 21. Its two ends can be fixed to the inner top surface of the protective housing 20 and the inner bottom surface of the protective cover 21 by welding, snap-fitting, or hooking.

[0059] The clutch ring 32, as a manually operated control component, achieves precise control over the engagement / disengagement state of the protective cover 21 through a threaded connection with the clutch lever 30. By rotating the clutch ring 32, the operator overcomes the elastic force of the return spring 31, causing the protective cover 21 to tightly press against the protective housing 20, enhancing the protective effect and meeting the high-strength protection requirements of the maintenance box in explosion-hazardous areas or severe weather conditions. The clutch ring 32 is generally a ring-shaped structure with internal threads, engaging with the clutch lever 30 via a threaded connection. The operator can use tools or manually rotate the clutch ring 32 to move it up and down on the clutch lever 30, thereby adjusting the engagement / disengagement state of the protective cover 21 and the protective housing 20.

[0060] Example 3:

[0061] This embodiment provides an explosion-proof maintenance box with a protective device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0062] The protective housing 20 is provided with a flexible tube 7 for separating the return spring 31 from the water.

[0063] The flexible tube 7 is used to effectively separate the return spring 31 from moisture. In humid environments, rainy weather, or accidental water ingress, it prevents moisture from contacting the return spring 31, avoiding the spring from rusting or corroding due to moisture, which could lead to a decrease in elasticity or even failure. This ensures that the clutch assembly 3 can operate stably for a long time, maintains the reliability of the clutch function of the protective cover 21, and ensures the integrity of the maintenance box protection system.

[0064] Example 4:

[0065] This embodiment provides an explosion-proof maintenance box with a protective device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0066] The flexible tube 7 is a corrugated tube 8 that covers the periphery of the return spring 31. One end of the corrugated tube 8 is connected to the inner bottom surface of the protective housing 20, and the other end is connected to the bottom surface of the protective cover plate 21.

[0067] The bellows 8 covers the periphery of the return spring 31. If a metal bellows 8 is used, the end can be fixed to the inner top surface of the protective cover 21 and the inner bottom surface of the protective housing 20 by welding or clamping. If a plastic bellows 8 is used, it can be tightly attached to the inner top surface of the protective cover 21 and the inner bottom surface of the protective housing 20 by waterproof adhesive.

[0068] Example 5:

[0069] This embodiment provides an explosion-proof maintenance box with a protective device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0070] Each of the aforementioned inlets 40 is equipped with a barrier net 9 to prevent foreign objects from entering.

[0071] The filter mesh 9, installed inside the inlet 40, plays a crucial role in filtering impurities. In outdoor environments, there is a large amount of dust, leaves, sand, and other foreign matter. The filter mesh 9 effectively prevents these impurities from entering the drainage system inside the protective cover 21, preventing them from clogging the inlet 40, drain pipe 41, or accumulating inside the protective shell 20. This ensures unobstructed flow of cooling water and maintains a stable cooling effect. The filter mesh 9 is generally made of finely woven metal or plastic wires, forming a mesh structure. The filter mesh 9 can be installed inside each inlet 40 using slots or adhesive, adhering tightly to the inner wall of the inlet 40, forming an integrated filtration unit.

[0072] Example 6:

[0073] This embodiment provides an explosion-proof maintenance box with a protective device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0074] The sunshade component 5 includes:

[0075] Solar panel 50 is installed on top of protective cover 21;

[0076] Temperature sensor 51 is installed inside the enclosure 1. The temperature sensor 51 is used to monitor the internal temperature of the enclosure 1 in real time.

[0077] The folding awning 52 is located inside the protective cover plate 21, and the protective cover plate 21 is also provided with a drive unit 10 for driving the folding awning 52 to extend outward.

[0078] Solar panel 50 is used to convert sunlight into electrical energy, providing power to the entire shading assembly 5 and other electrical components of the explosion-proof maintenance box, achieving energy self-sufficiency and reducing dependence on external power sources. This is particularly suitable for remote outdoor work areas, ensuring that shading and other related functions can still operate normally even without mains power. Solar panel 50 is generally a flat panel structure, usually with a frame around its perimeter. This frame can be fixed to the top or side of the protective cover 21, or other locations easily receiving sunlight, using slots or bolts.

[0079] Temperature sensor 51 is used to monitor the internal temperature of the enclosure 1 in real time, converting the temperature signal into an electrical signal and transmitting it to the control system as a basis for judgment. This allows the shading assembly 5 to be automatically activated when the internal temperature exceeds the expected value, thereby regulating the internal temperature and protecting electronic components, tools, etc., from high-temperature damage and maintaining their normal operating condition. Temperature sensor 51 is generally a small cylindrical or cuboid shape and can be fixed inside the enclosure 1 by adhesive, brackets, or screws, and is connected to the control system via wires.

[0080] When sunlight is strong and the internal temperature of the enclosure rises, the foldable awning 52 is driven by the drive unit 10 to unfold, blocking direct sunlight from reaching the enclosure 1 and reducing the amount of solar radiation heat entering the enclosure. This effectively lowers the internal temperature of the enclosure 1, creating a relatively cool environment for the items inside. Working in conjunction with cooling components such as the water inlet 40 and drain pipe 41, it forms a comprehensive cooling system, ensuring the normal operation of the equipment inside the enclosure. The foldable awning 52 generally consists of a foldable shading fabric and a supporting frame. The supporting frame is connected by hinges or connectors, allowing it to be folded and unfolded flexibly. When unfolded, it is flat and effectively blocks sunlight. When folded, it can be compactly stored inside the protective cover 21, saving space. The foldable awning 52 receives power from the drive unit 10 to achieve the unfolding and folding actions.

[0081] Example 7:

[0082] This embodiment provides an explosion-proof maintenance box with a protective device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0083] The drive unit 10 includes:

[0084] The drive chamber 100 is located on one side of the protective cover plate 21. The drive chamber 100 is connected to the interior of the protective shell 20, and the box 1 is provided with a support plate 101 for supporting the drive chamber 100.

[0085] An electric push rod 102 is disposed inside the drive chamber 100 and located at the rear of the drive chamber 100, and a connecting rod 103 is provided at the front end of the electric push rod 102;

[0086] A rolling part 11 is provided in the drive chamber 100. The rolling part 11 is used to cooperate with the connecting rod 103 to unfold or fold the foldable sunshade 52 in the front-back direction.

[0087] The drive chamber 100 provides a stable working space for the internal components, ensuring that the drive unit 10 can operate stably in a relatively clean and safe environment. The drive chamber 100 is generally a cuboid cavity structure and can be installed on one side of the protective cover plate 21 by welding or bolts.

[0088] The electric actuator 102 converts electrical energy into linear motion and extends or retracts according to instructions from the control system. It drives the folding awning 52 to unfold or fold via a connecting rod 103 connected to the rolling part 11. The rear end of the electric actuator 102 is mounted in the drive chamber 100 using bolts or pins, while the front end is connected to the rolling part 11 via the connecting rod 103.

[0089] The rolling part 11 is used to assist the unfolding and folding action of the folding awning 52. During the movement of the folding awning 52, the rolling of the roller reduces the frictional resistance between the awning and the protective shell 20, so that the folding awning 52 can open and close more smoothly and steadily, improve the movement efficiency, reduce component wear, extend service life, and at the same time ensure that the folding awning 52 can be stably positioned in the unfolded state without deviation.

[0090] Example 8:

[0091] This embodiment provides an explosion-proof maintenance box with a protective device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0092] The rolling part 11 includes:

[0093] The first roller 110 is evenly arranged at the bottom of the folding awning 52 along the front-to-back direction;

[0094] The second roller 111 is located inside the drive chamber 100 and is positioned opposite to the first roller 110 located at the front.

[0095] A connecting shaft 112 is located between the first roller 110 and the second roller 111, and the connecting shaft 112 is connected to the connecting rod 103.

[0096] During the unfolding or folding of the folding awning 52, the first roller 110 reduces the friction between the folding awning 52 and components such as the protective cover 21 and the drive chamber 100 by rolling itself, allowing the folding awning 52 to move smoothly in a planar manner, ensuring stable and efficient operation. It also assists in supporting the folding awning 52, keeping it stable in the unfolded state and preventing problems such as jamming or shifting due to excessive friction or uneven force. The first roller 110 is evenly arranged at the bottom of the folding awning 52 along the front-to-back direction, tightly connected to the support frame of the folding awning 52, and directly in contact with the inner surface of the drive chamber 100. The first roller 110 can be fixed to the support frame of the folding awning 52 by welding or bolts, ensuring that it will not detach from the folding awning 52 during movement. It is also connected to the connecting shaft 112 by interference fit, bearing connection, or other means, allowing the roller to rotate flexibly around the connecting shaft 112, thus achieving the rolling function.

[0097] The second roller 111 works in conjunction with the first roller 110, primarily serving as a guide and auxiliary support. When the folding awning 52 unfolds or folds, it is relatively fixed within the drive chamber 100, corresponding to the first roller 110. Through components such as the connecting shaft 112, it constrains the movement trajectory of the folding awning 52, ensuring smooth movement along the predetermined front-to-back direction and preventing lateral deviation or swaying, thus making the opening and closing action of the folding awning 52 more precise and stable. The second roller 111 has a similar shape to the first roller 110, and it can also be connected to the connecting shaft 112 via interference fit, bearing connection, or other methods.

[0098] The connecting shaft 112 serves to transmit force and constrain the direction of movement. It transmits the extension and retraction force of the electric push rod 102 to the folding awning 52, causing the folding awning 52 to unfold or fold along a predetermined direction via rollers. Simultaneously, it ensures the relative positional relationship between the rollers and between the rollers and the folding awning 52, making the movement of the entire folding awning 52 coordinated and consistent, achieving smooth and precise motion control. The connecting shaft 112 is generally a cylindrical rod-shaped structure, passing through the central hole of the first roller 110 and the second roller 111, connecting the two. The middle part of the connecting shaft 112 is connected to the connecting rod 103 of the folding awning 52. The connecting rod 103 can be a combination of a sleeve and a long rod. The long rod can be fixed to the front end of the electric push rod 102 by welding or bolts. The sleeve is fitted onto the connecting shaft 112 and can be fixed to the connecting shaft 112 by bolts.

[0099] Example 9:

[0100] This embodiment provides an explosion-proof maintenance box with a protective device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0101] The drive chamber 100 is also provided with a guide groove 12 to prevent the roller from deviating from the predetermined path.

[0102] The guide groove 12 is used to precisely limit the movement trajectory of the rollers, ensuring that the rollers always move along a predetermined path during rolling. This guarantees that the folding awning 52 can be accurately unfolded or folded according to design requirements, avoiding instability such as deviation or swaying, improving the accuracy and stability of the folding awning 52's movement, and ensuring the effective implementation of the sunshade and temperature control function. The guide groove 12 is generally a groove structure adapted to the first roller 110 and the second roller 111. It can be installed in the drive chamber 100 by welding, bolting, or integral molding with the drive chamber 100, and is set along the front-to-back direction and matched with the movement path of the rollers.

[0103] In the sunshade assembly 5 of the explosion-proof maintenance box, the solar panel 50 continuously collects solar energy and converts it into electrical energy to power the entire system. The temperature sensor 51 monitors the temperature inside the box in real time. When the temperature rises and exceeds a preset threshold, the temperature sensor 51 converts the temperature signal into an electrical signal and sends it to the control system. After receiving the signal, the control system activates the electric push rod 102, which begins to extend or retract. The connecting rod 103 at its front end drives the connecting shaft 112 to move. The connecting shaft 112 drives the first roller 110 to roll along the protective cover 21. At the same time, since the second roller 111 is constrained by the guide groove 12 in the drive chamber 100 and is connected to the first roller 110 through the connecting shaft 112, it works together to drive the folding sunshade 52 to unfold smoothly in a predetermined front-back direction. The sunshade cloth of the folding sunshade 52 begins to block direct sunlight from hitting the box body 1, reducing the temperature inside the box. When the temperature inside the chamber drops to a suitable range, the control system controls the electric push rod 102 to reverse, and the connecting shaft 112 drives the first roller 110 to roll in the opposite direction. The folding awning 52 then folds and is stored back inside the protective cover 21. This cycle repeats, realizing the function of automatically adjusting the state of the folding awning 52 according to the temperature inside the chamber.

[0104] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. An explosion-proof service box with a guard, comprising a box body (1), characterized in that Also include: The protection mechanism (2) includes a protection shell (20) arranged above the box (1) and an open top, a protection cover plate (21) covering the top of the protection shell (20), and a clutch assembly (3) for changing the clutch state between the protection shell (20) and the protection cover plate (21); The cooling mechanism (4) includes a plurality of water inlets (40) arranged on the top of the protection cover plate (21), a drain pipe (41) arranged outside the box (1) and connected to the inside of the protection shell (20), a sunshade assembly (5) arranged inside the protection cover plate (21) and used to prevent the temperature inside the box (1) from being too high, and a curtain plate (6) rotatably connected to the protection cover plate (21) and used to protect the sunshade assembly (5).

2. The explosion-proof service box with a protection device according to claim 1, characterized in that, The clutch assembly (3) includes: The clutch rod (30) is arranged at one end of the bottom of the protection shell (20) and extends above the protection cover plate (21) along the longitudinal direction; The reset spring (31) is arranged between the protection shell (20) and the protection cover plate (21), and the reset spring (31) is sleeved on the clutch rod (30); The clutch ring (32) is arranged above the protection cover plate (21) and is threadedly connected with the clutch rod (30), and the clutch ring (32) overcomes the elastic force of the reset spring (31) by rotating to cause the protection cover plate (21) to abut against the protection shell (20).

3. The explosion-proof service box with a protection device according to claim 1, characterized in that, The protection shell (20) is provided with a flexible tube (7) for separating the reset spring (31) from moisture.

4. The explosion-proof service box with a protection device according to claim 3, characterized in that, The flexible tube (7) is a bellows (8) covering the side of the reset spring (31), one end of the bellows (8) is connected with the inner bottom surface of the protection shell (20), and the other end is connected with the bottom surface of the protection cover plate (21).

5. The explosion-proof service box with a protection device according to claim 1, characterized in that, Each of the water inlets (40) is provided with a blocking net (9) for preventing foreign matter from entering.

6. The explosion-proof service box with a guard device according to claim 1, characterized in that, The sunshade assembly (5) includes: The solar panel (50) is arranged on the top of the protection cover plate (21); The temperature sensor (51) is arranged in the box (1), and the temperature sensor (51) is used to monitor the temperature inside the box (1) in real time; The folding sunshade (52) is arranged inside the protection cover plate (21), and the protection cover plate (21) is further provided with a driving unit (10) for driving the folding sunshade (52) to extend outward.

7. An explosion-proof service box with a guard according to claim 6, characterized in that The driving unit (10) includes: The driving chamber (100) is arranged on one side of the protection cover plate (21), the driving chamber (100) is connected with the inside of the protection shell (20), and the box (1) is provided with a support plate (101) for supporting the driving chamber (100); The electric push rod (102) is arranged in the driving chamber (100) and located at the rear of the driving chamber (100), and the front end of the electric push rod (102) is provided with a connecting rod (103); The rolling part (11) is arranged in the driving chamber (100), and the rolling part (11) is used to cooperate with the connecting rod (103) to expand or fold the folding sunshade (52) in the front-rear direction.

8. An explosion-proof service box with a guard according to claim 7, characterized in that The rolling part (11) includes: The first roller (110) is arranged uniformly in the front-rear direction at the bottom of the folding sunshade (52); The second roller (111) is arranged in the driving chamber (100) and is arranged opposite to the first roller (110) at the frontmost position; The connecting shaft (112) is arranged between the first roller (110) and the second roller (111), and the connecting shaft (112) is connected with the connecting rod (103).

9. An explosion-proof service box with a guard according to claim 8, characterized in that, The driving chamber (100) is further provided with a guide groove (12) for preventing the roller from deviating from a predetermined path.

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