Power distribution cabinet
By introducing heat shields and air duct structures into the distribution cabinet, the heat is carried away by airflow, which solves the problem of lateral temperature difference caused by thermal radiation in the boiler room and achieves the stability and ease of maintenance of the cabinet.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- JIWANA ELECTRIC TECH CO LTD
- Filing Date
- 2026-02-24
- Publication Date
- 2026-05-15
AI Technical Summary
In high-temperature heat source environments such as boiler rooms, the lateral temperature difference caused by thermal radiation in the distribution cabinet leads to uneven thermal expansion and local warping deformation of the cabinet, affecting the installation stability of the internal electrical components.
A power distribution cabinet was designed, which adopts a heat shield and air duct structure. The air duct guides the external airflow to remove heat. Combined with the mounting plate and locking structure, the heat shield can be stably installed and disassembled for maintenance, reducing the lateral temperature difference and suppressing warping deformation.
It effectively reduces the lateral temperature difference in the width direction of the cabinet, suppresses the warping deformation of the hot sidewall, ensures the stable installation of electrical components, and facilitates the disassembly and maintenance of the heat shield.
Smart Images
Figure CN122051809A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of electrical cabinets, and in particular to a power distribution cabinet. Background Technology
[0002] Distribution cabinets are typically used for receiving, collecting, distributing, controlling and protecting electrical energy, and can monitor, measure and alarm the operating status of electrical circuits.
[0003] One related technology involves a distribution cabinet used in a boiler room, comprising a cabinet body containing electrical components, and a cabinet door rotatably connected to one side of the cabinet body. During installation, the side of the distribution cabinet facing away from the cabinet door faces the boiler.
[0004] In high-temperature heat source environments such as boiler rooms, distribution cabinets are usually located near the boiler body, steam pipes, or hot flue. During operation, the heat source will generate continuous lateral heat radiation to the distribution cabinet, causing the side of the distribution cabinet closer to the heat source to be at a higher temperature for a long time, while the side farther away from the heat source is relatively cooler, thus forming a significant lateral temperature difference in the width of the cabinet.
[0005] Since cabinets are generally made of metal plates and frame structures, lateral temperature differences can cause uneven thermal expansion in different parts of the cabinet and lead to local warping and deformation. This may cause the installation reference of electrical components inside the cabinet to shift and affect the stability of internal assembly. Summary of the Invention
[0006] In order to improve the problem of uneven thermal expansion and local warping deformation of the cabinet caused by lateral heat radiation from the boiler room, the present application provides a distribution cabinet.
[0007] The power distribution cabinet provided in this application adopts the following technical solution: A power distribution cabinet includes a cabinet body. A receiving groove is provided on one side of the cabinet body. A cabinet door for closing the receiving groove is rotatably connected to the side of the cabinet body. A heat insulation structure is provided on the side of the cabinet body away from the cabinet door. The heat insulation structure includes a heat baffle plate located at the end of the cabinet body away from the cabinet door. The heat baffle plate and the side of the cabinet body away from the cabinet door are spaced apart, forming an air duct between them. The air duct has an air inlet and an air outlet communicating with the outside. The air duct guides outside air to enter from the lower end, flow vertically upwards, and then exit from the upper end. Two parallel mounting plates are provided on the end face of the heat baffle plate facing the cabinet body. The cabinet body is located between the two mounting plates. A locking structure connecting the mounting plates and the cabinet body is provided.
[0008] By adopting the above technical solution, the air inlet and outlet of the air duct guide external air to enter from the bottom, flow vertically upwards, and then exit from the top. In the case of lateral baking by heat radiation in the boiler room, the heat absorbed by the hot side wall of the cabinet is carried away in time by the air flow in the air duct, reducing the lateral temperature difference in the width direction of the cabinet and suppressing the warping deformation of the hot side wall. At the same time, the heat baffle provides shielding and isolation against external heat radiation, and together with the mounting plate and locking structure, it enables stable installation and removable maintenance of the heat baffle.
[0009] Optionally, the locking structure includes a mounting box disposed on the side of the cabinet facing the mounting plate and a mounting block disposed on the side of the mounting plate facing the mounting box and located directly above the mounting box. The mounting box is located on the side of the mounting plate away from the heat shield. The mounting box has a mounting cavity, and a locking rod slides vertically within the mounting cavity. An elastic hook is disposed on the side of the locking rod away from the heat shield. The upper end face of the mounting box has a through hole for the locking rod and the elastic hook to pass through. The mounting block has a slot for the locking rod and the elastic hook to be inserted. A locking plate is disposed on the inner wall of the slot. The elastic hook includes a hook portion that can engage with the locking plate. The mounting box is provided with a lifting assembly for driving the locking rod to rise and fall.
[0010] By adopting the above technical solution, the elastic hook on the locking rod passes through the perforation of the mounting box and inserts into the slot of the mounting block under the drive of the lifting component. The hook part of the elastic hook is deformed by the locking plate until it returns to its original position after the hook part is higher than the locking plate. The elastic hook and the locking plate form a hook engagement, so that the mounting block and the mounting box are locked together, realizing the quick locking between the heat shield and the cabinet, and preventing the heat shield from separating from the cabinet under external vibration. The lifting component and the elastic hook structure facilitate integrated unlocking and disassembly operations, so that the heat shield can be easily disassembled during maintenance, cleaning or replacement and maintain a stable interval distance and air duct shape after reassembly, thereby ensuring the working stability of the heat insulation structure.
[0011] Optionally, the lifting assembly includes a lifting rack disposed on the side of the locking lever away from the elastic hook and a rotating shaft rotatably connected to the inner wall of the mounting cavity near the cabinet. The rotating shaft is located on the side of the lifting rack away from the locking lever and extends out of the mounting box in a direction away from the cabinet. The rotating shaft is fitted with a gear that can mesh with the lifting rack.
[0012] By adopting the above technical solution, the rotation operation of the rotating shaft is stably converted into locking, realizing the rapid locking and unlocking of the hook engagement between the elastic hook and the mounting block.
[0013] Optionally, the mounting box has a T-shaped mounting groove on the side facing the mounting plate. The mounting groove includes an opening section and a cavity section. The width of the opening section is smaller than the width of the cavity section. The mounting groove extends upward to the upper end face of the mounting box. The mounting groove communicates with the mounting cavity and is positioned opposite to the gear. The mounting plate has a vertical strip inserted into the mounting groove at the end facing the mounting box. The vertical strip is T-shaped. A mounting rack is provided on the side of the vertical strip away from the mounting plate. The upper end face of the mounting box has a mounting hole communicating with the mounting groove. The mounting rack can extend into the mounting hole and mesh with the gear.
[0014] By adopting the above technical solution, the vertical strip and mounting rack on the mounting plate are introduced from the upper opening of the mounting groove, so that the vertical strip and the mounting groove form a dovetail fit. During the assembly process, the vertical strip is guided and positioned and restrained to prevent lateral disengagement, reducing the lateral offset and sway of the mounting plate relative to the mounting box. During the descent of the vertical strip, the mounting rack and gear are engaged. At this time, the vertical strip continues to descend, and the mounting rack can drive the gear to rotate. The gear then drives the lifting rack, locking rod and elastic hook to rise together. When the mounting rack descends to the position, the hook of the elastic hook passes through the insertion hole of the mounting block to realize the hook engagement between the elastic hook and the mounting block.
[0015] Optionally, a folded cloth is fixedly connected to the lower inner wall of the cavity section, and a lifting block is provided at the upper end of the folded cloth. A locking component is provided between the lifting block and the mounting box to connect the two. When the locking component locks the lifting block to the mounting box, the folded cloth closes the cavity section.
[0016] By adopting the above technical solution, when the lifting block is locked in the mounting box by the locking component, the folded cloth seals the groove section, preventing dust, moisture and foreign objects from entering the mounting cavity along the mounting groove, reducing the risk of gears, racks and other transmission components and the internal structure of the mounting cavity being corroded or jammed.
[0017] Optionally, the locking assembly includes a lifting bar disposed on the side of the lifting block and a locking magnet disposed on the inner wall of the mounting cavity. The lifting bar is located inside the mounting cavity. An iron sheet is disposed above both the lifting bar and the lifting block. A mounting magnet is disposed on the lower end face of the vertical bar. Both the mounting magnet and the locking magnet can magnetically engage with the iron sheet. The mounting rack includes multiple vertically spaced lifting tooth blocks. The distance between the iron sheet and the lowermost lifting tooth block of the mounting rack is not greater than the distance between two adjacent lifting tooth blocks. The lifting bar and the iron sheet can be inserted between two adjacent rotating tooth blocks on the gear.
[0018] By adopting the above technical solution, when the locking magnet and the iron plate are magnetically attracted, the folded cloth closes the mounting groove, reducing the risk of loosening and rebound caused by vibration or thermal expansion and contraction. The vertical bar is inserted into the mounting groove and the mounting magnet and the iron plate are magnetically attracted. As the mounting rack descends, the locking magnet and the iron plate separate. Because the mounting magnet and the iron plate are magnetically attracted, the lifting block will not fall directly to the lowest point, but will be held at a transition height by the mounting magnet through the iron plate, so that the folded cloth still blocks the mounting groove during insertion. Conversely, as the mounting plate and the vertical bar rise, the mounting magnet can drive the iron plate and the lifting block to rise together, so that the folded cloth unfolds and maintains the blocking of the mounting groove as the vertical bar gradually exits the mounting groove, until the locking magnet and the iron plate are magnetically attracted. After the locking magnet re-attracts the iron plate and holds the lifting block in the closed position, even if the mounting magnet and the iron plate separate, the mounting groove will not open.
[0019] Optionally, the mounting block is provided with an unlocking component for releasing the engagement between the elastic hook and the locking plate. The slot has an insertion hole on its inner wall away from the mounting plate. The unlocking component includes a push rod passing through the insertion hole. The push rod can slide along the axis of the insertion hole and rotate around its axis. One end of the push rod is inserted into the slot and connected to a push block. The push block is used to push the elastic hook to release the engagement between the elastic hook and the locking plate. The other end of the push rod extends outside the mounting block. The push block has a clearance state and a push-to-release state. The push block can switch between the locked state and the blocking state by sliding along the axis of the insertion hole via the push rod. It can also switch between the blocking state and the pushing unlock state by rotating the push rod around the axis of the insertion hole. When the push block is in the clearance state, it is outside the hooking area between the elastic hook and the locking plate. When the push block is in the pushing unlock state, it pushes the hook of the elastic hook, disengaging it from the locking plate. When the push block is in the blocking state, it is inserted between the hook and the locking plate, separating them.
[0020] By adopting the above technical solution, the push block can avoid interfering with the hooking area between the elastic hook and the locking plate in the avoidance state; when unlocking is required, the drive rod moves towards the locking rod, causing the push block to switch from the avoidance state to the push unlocking state, releasing the hooking engagement with the locking plate. Then, the push rod is rotated to insert the push block between the hook and the locking plate to separate them, thereby preventing the elastic hook from re-engaging with the locking plate due to rebound or vibration during the unlocking process, improving the reliability and safety of the unlocking operation; the axial sliding and rotation switching of the push rod work together to allow unlocking and anti-relocking to be performed on the outside of the mounting block, facilitating quick disassembly and assembly of the heat baffle in confined spaces and reducing the risk of repeated locking due to misoperation.
[0021] Optionally, the locking plate is provided with a sliding plate that can move in the direction of the insertion hole axis. The sliding plate has a through hole for the push rod to pass through. A top block is provided on the outer circumference of the push rod between the sliding plate and the insertion hole. The top block is used to drive the sliding plate to move away from the insertion hole. A spring is fixedly connected to the end face of the sliding plate facing the insertion hole. The end of the spring away from the sliding plate is fixedly connected to the inner wall of the slot near the insertion hole. The spring is in a stretched state.
[0022] By adopting the above technical solution, the push rod can apply a pushing force to the slide plate with the help of the top block during the axial sliding process, driving the slide plate to move away from the socket, so that the spring is further stretched; when the push block switches from the blocking state to the push unlocking state, the spring resets and drives the slide plate back to the initial position, and at the same time the slide plate drives the push block back to the avoidance state through the top block.
[0023] Optionally, an air intake hood is provided below the heat shield and located below the air inlet. An air intake channel is provided inside the air intake hood. One side of the air intake channel faces the cabinet and the other side faces the air inlet. A baffle structure is provided inside the air intake hood. The baffle structure includes a first baffle plate and a second baffle plate arranged sequentially along the air intake direction. The first baffle plate and the second baffle plate are used to make the air flow path in the air intake channel zigzag.
[0024] By adopting the above technical solution, the air flow path in the air intake channel is in a zigzag shape, which can weaken the tendency of heat radiation and hot airflow to flow in a straight line, and allow the air entering the air duct to be buffered and homogenized during the deflection process.
[0025] In summary, this application includes at least one of the following beneficial technical effects: By utilizing the air inlet and outlet of the air duct, external air is guided to enter from the bottom, flow vertically upwards, and then exit from the top. This allows the heat absorbed by the hot sidewalls of the cabinet to be carried away in a timely manner through the airflow within the air duct under the lateral baking conditions of the boiler room's heat radiation. This reduces the lateral temperature difference in the width direction of the cabinet and inhibits warping and deformation of the hot sidewalls. At the same time, the heat baffle provides shielding and isolation against external heat radiation. Combined with the mounting plate and locking structure, the heat baffle can be stably installed and easily removable for maintenance. The T-shaped mounting slot and the T-shaped block vertical strip guide each other to improve the mounting plate assembly positioning accuracy and suppress lateral dislodgement. The folded cloth, under the linkage of the lifting block and the magnetic locking component, realizes the automatic closure of the mounting slot and the transition shielding during the assembly and disassembly process, reducing the risk of dust and moisture entering the mounting cavity and causing corrosion of gears and racks. Attached Figure Description
[0026] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 This is a top view of the power distribution cabinet; Figure 3 It is along Figure 2 Sectional view of line AA in the middle; Figure 4 It is along Figure 2 A partial sectional view of the middle BB line; Figure 5 This is a partial sectional view highlighting the lifting structure; Figure 6 This is a partial cross-sectional view that highlights the unlock component.
[0027] Reference numerals: 1. Cabinet; 11. Cabinet door; 12. Receiving slot; 13. Main circuit device; 14. Branch circuit device; 15. Acquisition device; 2. Thermal insulation structure; 21. Heat shield; 211. Air intake hood; 2111. Air intake channel; 2112. Fixing plate; 212. Baffle structure; 2121. First baffle plate; 2122. Second baffle plate; 213. Guide assembly; 2131. Guide plate; 214. Fan; 22. Mounting plate; 221. Vertical bar; 222. Mounting rack; 223. Mounting magnet; 23. Air duct; 3. Locking structure; 31. Mounting box; 311. Mounting cavity; 312. Perforation; 313. 314 Mounting slot; 32 Mounting block; 321 Slot; 322 Insertion hole; 33 Locking rod; 34 Elastic hook; 35 Locking plate; 351 Slide groove; 36 Lifting assembly; 361 Rotating shaft; 362 Gear; 363 Lifting rack; 37 Unlocking assembly; 371 Push rod; 372 Push block; 373 Top block; 374 Slide plate; 3741 Slider; 3742 Through hole; 3743 First stop block; 3744 Second stop block; 375 Spring; 38 Folded cloth; 381 Lifting block; 39 Locking assembly; 391 Lifting bar; 392 Locking magnet; 393 Iron sheet. Detailed Implementation
[0028] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.
[0029] This embodiment discloses a power distribution cabinet. (Refer to...) Figure 1 A power distribution cabinet is installed near the boiler body, steam pipes, or hot flue. This embodiment exemplifies the power distribution cabinet being installed near the boiler body.
[0030] Reference Figure 1 and Figure 2The distribution cabinet includes a cabinet body 1 and a cabinet door 11. A receiving slot 12 is provided on the side of the cabinet body away from the boiler body. The receiving slot 12 houses main circuit devices 13, branch circuit devices 14, and data acquisition devices 15. The main circuit devices 13 generally include a main circuit breaker on the incoming line side and a busbar system electrically connected to the main circuit breaker. The busbar system is used to collect the three-phase conductors and neutral conductor of the upstream power supply and distribute them downstream.
[0031] Reference Figure 1 The branch device 14 includes several branch circuit breakers. The incoming terminal of each branch circuit breaker is electrically connected to the busbar system, and the outgoing terminal is used to connect to the corresponding load circuit, so as to realize independent switching and overload and short circuit protection for each branch.
[0032] Reference Figure 1 The data acquisition device 15 includes a current transformer and a terminal block. The terminal block is used for secondary line connection. The data acquisition device 15 facilitates the centralized access and transfer of secondary signals such as measurement, control, communication, and alarm signals.
[0033] Reference Figure 1 and Figure 3 The cabinet door 11 is located on the side of the cabinet 1 away from the boiler body, and the cabinet door 11 is rotatably connected to the cabinet 1. The cabinet door 11 is used to seal the receiving groove 12.
[0034] Reference Figure 1 and Figure 3 The cabinet 1 is equipped with a heat insulation structure 2, which is located on the side of the cabinet 1 away from the cabinet door 11. During installation, the side of the cabinet 1 away from the cabinet door 11 faces the boiler body, so that the heat insulation structure 2 is arranged on the side closer to the heat source to match the lateral heat radiation conditions of the boiler room. The heat insulation structure 2 includes a heat baffle plate 21, a mounting plate 22, and a locking structure 3.
[0035] Reference Figure 1 and Figure 3 The heat shield 21 is located on the side of the cabinet 1 away from the cabinet door 11. The heat shield 21 is spaced apart from the side of the cabinet 1 away from the cabinet door 11, and the heat shield 21 is also spaced apart from the ground on which the cabinet 1 is located.
[0036] Reference Figure 1 and Figure 3 There are two mounting plates 22, which are parallel to each other. The two mounting plates 22 are fixedly connected to the end face of the heat shield 21 facing the cabinet 1. The cabinet 1 is located between the two mounting plates 22. The heat shield 21, the cabinet 1, and the two mounting plates 22 enclose an air duct 23. The air duct 23 has an air inlet and an air outlet communicating with the outside. The air inlet is located at the lower end of the air duct 23, and the air outlet is located at the upper end of the air duct 23. The air duct 23 guides outside air to enter through the air inlet, flow vertically upwards, and then exit through the air outlet.
[0037] Reference Figure 3 A fan hood 211 is fixedly connected to the lower part of the heat shield 21, and the fan hood 211 is located directly below the air inlet. The end faces of the two mounting plates 22 that are close to each other are fixedly connected to the fan hood 211. A fixing plate 2112 is fixedly connected to the end face of the fan hood 211 facing the cabinet 1, and the fixing plate 2112 abuts against the cabinet 1 to form a positioning.
[0038] Reference Figure 3 An air intake duct 211 is provided inside the air intake hood 211. One side of the air intake duct 2111 opens towards the cabinet 1, and the other side of the air intake duct 2111 opens towards the air inlet. The air intake duct 2111 includes an inclined section.
[0039] Reference Figure 3 A baffle structure 212 is provided within the inclined section. The baffle structure 212 includes a first baffle plate 2121 and a second baffle plate 2122, which are arranged sequentially along the air inlet direction. The two inner walls of the air intake channel 2111 along the length of the air intake hood 211 and the lower inner wall of the inclined section are fixedly connected to the first baffle plate 2121. The two inner walls of the air intake channel 2111 along the length of the air intake hood 211 and the upper inner wall of the inclined section are fixedly connected to the second baffle plate 2122.
[0040] Reference Figure 3 Two guide components 213 are provided on the end face of the heat shield 21 facing the cabinet 1. The two guide components 213 are symmetrically distributed about the vertical central axis of the heat shield 21. The guide component 213 includes three guide plates 2131. One end of the guide plate 2131 is fixedly connected to the heat shield 21, and the side of the guide plate 2131 away from the heat shield 21 abuts against the cabinet 1. The guide plate 2131 is inclined, and the height of the guide plate 2131 gradually decreases along the direction away from the vertical central axis of the heat shield 21. The side of the guide plate 2131 away from the vertical central axis of the heat shield 21 is fixedly connected to the mounting plate 22.
[0041] Reference Figure 1 and Figure 3 A fan 214 is fixedly connected to the heat shield 21, and the end faces of the two mounting plates 22 that are close to each other are fixedly connected to the fan 214. The fan 214 is located at the air outlet of the air duct 23.
[0042] Reference Figure 1 and Figure 4 Two locking structures 3 are provided, symmetrically distributed about the vertical central axis of the cabinet 1. The locking structures 3 are used to connect the mounting plate 22 to the cabinet 1. The locking structure 3 includes a mounting box 31, a mounting block 32, a locking rod 33, a spring hook 34, a locking plate 35, a lifting assembly 36, and an unlocking assembly 37.
[0043] Reference Figure 1 and Figure 4 The mounting box 31 is fixedly connected to the side of the cabinet 1 facing the mounting plate 22, and the mounting box 31 is located on the side of the mounting plate 22 away from the heat shield 21. The mounting box 31 has a mounting cavity 311 inside. The mounting box 31 has a through hole 312 on the top, and the through hole 312 communicates with the mounting cavity 311.
[0044] Reference Figure 4 and Figure 5 The mounting box 31 has a mounting groove 313 on the side facing the mounting plate 22. The mounting groove 313 is T-shaped and extends upward to the upper end face of the mounting box 31. The mounting groove 313 includes a groove opening section and a groove cavity section. The width of the groove opening section is smaller than the width of the groove cavity section. The groove cavity section is located on the side of the groove opening section near the mounting cavity 311 and communicates with the mounting cavity 311.
[0045] Reference Figure 4 and Figure 5 A folded cloth 38 is installed inside the groove section, and the lower end of the folded cloth 38 is fixedly connected to the lower inner wall of the groove section. A lifting block 381 is fixedly connected to the upper end of the folded cloth 38. The lifting block 381 is located inside the mounting groove 313, and the shape of the lifting block 381 is adapted to the mounting groove 313.
[0046] Reference Figure 4 and Figure 5 A locking assembly 39 is provided between the lifting block 381 and the mounting box 31 to connect the two. The locking assembly 39 includes a lifting bar 391, a locking magnet 392, and an iron plate 393. The lifting bar 391 is fixedly connected to the side of the lifting block 381 and is located inside the mounting cavity 311. Iron plates 393 are fixedly connected above both the lifting bar 391 and the lifting block 381. The locking magnet 392 is fixedly connected to the upper inner wall of the mounting cavity 311 and is located directly above the iron plate 393. The locking magnet 392 can magnetically engage with the iron plate 393. When the locking magnet 392 and the iron plate 393 are magnetically engaged, the folded cloth 38 closes the groove section.
[0047] Reference Figure 4 and Figure 5 A guide groove is provided on the end face of the mounting cavity 311 near the cabinet 1. The guide groove is in the shape of a vertical dovetail groove. The width of the groove opening is smaller than the width of the groove bottom. A locking rod 33 is disposed within the mounting cavity 311. A guide block is fixedly connected to the side of the locking rod 33 facing the guide groove. The guide block is in the shape of a dovetail groove, and its cross-section is adapted to the guide groove. The guide block is slidably disposed within the guide groove.
[0048] Reference Figure 4 and Figure 5The elastic hook 34 is fixedly connected to the end face of the locking rod 33 away from the mounting plate 22. The elastic hook 34 includes an elastic part and a hook part. The elastic part is fixedly connected to the end face of the locking rod 33 away from the mounting plate 22, and the hook part is fixedly connected to the end of the elastic part away from the locking rod 33. Both the elastic hook 34 and the locking rod 33 can move upward and pass through the through hole 312 and extend out of the mounting box 31.
[0049] Reference Figure 1 , Figure 4 and Figure 5 The mounting block 32 is fixedly connected to the end face of the mounting plate 22 away from the heat shield 21, and the mounting block 32 is located directly above the mounting box 31. When the cabinet 1 is connected to the mounting plate 22, the mounting block 32 is in contact with the upper end face of the mounting box 31. The lower end face of the mounting block 32 has a slot 321, which is opposite to the through hole 312. The elastic hook 34 and the locking rod 33 can both be inserted into the slot 321.
[0050] Reference Figure 1 , Figure 4 and Figure 5 The three inner walls of the slot 321 are fixedly connected to the sides of the locking plate 35. The three inner walls of the slot 321 include: the inner wall of the slot 321 facing away from the heat shield 21, the inner wall of the slot 321 near the vertical central axis of the heat shield 21, and the inner wall of the slot 321 away from the vertical central axis of the heat shield 21. A gap is provided between the inner wall of the slot 321 near the heat shield 21 and the locking plate 35, allowing the locking rod 33 and the elastic hook 34 to pass through. The hook portion of the elastic hook 34 can engage with the locking plate 35.
[0051] Reference Figure 4 and Figure 5 The lifting assembly 36 is used to drive the locking lever 33 and the elastic hook 34 to rise and fall. The lifting assembly 36 includes a rotating shaft 361, a gear 362, and a lifting rack 363. The rotating shaft 361 is rotatably connected to the inner wall of the mounting cavity 311 near the cabinet 1. The rotating shaft 361 extends away from the cabinet 1, passes through the mounting box 31, and extends to the outside. The rotating shaft 361 is located on the side of the locking lever 33 near the mounting plate 22. The gear 362 is sleeved on the outside of the rotating shaft 361. The gear 362 is located inside the mounting cavity 311 and is arranged opposite to the mounting groove 313. The gear 362 includes multiple rotating tooth blocks, which are circumferentially distributed around the axis of the rotating shaft 361. The lifting bar 391 and the iron plate 393 can be inserted between two adjacent rotating tooth blocks.
[0052] Reference Figure 4 and Figure 5The lifting rack 363 is fixedly connected to the end face of the locking rod 33 facing the rotating shaft 361, and the lifting rack 363 meshes with the gear 362. When the hook of the elastic hook 34 engages with the locking plate 35, the upper end face of the lifting rack 363 is in contact with the upper inner wall of the mounting cavity 311. In other embodiments, when the hook of the elastic hook 34 engages with the locking plate 35, a gap is left between the upper end face of the lifting rack 363 and the upper inner wall of the mounting cavity 311.
[0053] Reference Figure 4 and Figure 5 A vertical strip 221 is fixedly connected to the end face of the mounting plate 22 facing the mounting box 31. The vertical strip 221 is T-shaped, and its cross-section is adapted to the mounting groove 313. The upper end of the vertical strip 221 is fixedly connected to the lower end face of the mounting block 32. A mounting rack 222 is fixedly connected to the end face of the vertical strip 221 away from the mounting plate 22. The mounting rack 222 includes multiple lifting teeth, which are arranged in a vertically spaced array. A mounting hole 314 is provided on the top of the mounting box 31, which communicates with the mounting cavity 311. The horizontal side of the mounting hole 314 communicates with the mounting groove 313. The width of the mounting hole 314 is smaller than the width of the groove section.
[0054] Reference Figure 4 and Figure 5 Both the vertical bar 221 and the mounting rack 222 can be inserted into the mounting slot 313, and the mounting rack 222 can be raised and lowered through the mounting hole 314. When the vertical bar 221 and the mounting rack 222 are inserted into the mounting slot 313, the mounting rack 222 passes through the mounting hole 314 and extends into the mounting cavity 311, where it can mesh with the gear 362. The distance between the iron piece 393 on the lifting bar 391 and the lowermost lifting tooth block of the mounting rack 222 is no greater than the distance between two adjacent lifting tooth blocks. When the mounting rack 222 drives the lifting bar 391 and the iron piece 393 to descend together, the lifting bar 391 and the iron piece 393 can naturally align with two adjacent rotating tooth blocks and drive the gear 362 to rotate through the corresponding angle.
[0055] Reference Figure 4 and Figure 5 Furthermore, the lower end face of the mounting rack 222 is coplanar with the lower end face of the vertical bar 221. Both the lower end face of the vertical bar 221 and the lower end face of the mounting rack 222 are fixedly connected to mounting magnets 223, which can magnetically engage with the iron sheet 393.
[0056] Reference Figure 4 and Figure 6The unlocking component 37 is used to release the engagement between the elastic hook 34 and the locking plate 35. The unlocking component 37 includes a push rod 371, a push block 372, a top block 373, a sliding plate 374, and a spring 375. The slot 321 has an insertion hole 322 on its inner wall away from the mounting plate 22. The upper end face of the locking plate 35 has a sliding groove 351, which is dovetail-shaped.
[0057] Reference Figure 4 and Figure 6 The sliding plate 374 is slidably mounted on the upper end of the locking plate 35, and is positioned opposite to the insertion hole 322. A slider 3741 is fixedly connected to the lower end face of the sliding plate 374. The slider 3741 is disposed within a slide groove 351 and can move along the axis of the insertion hole 322 within the slide groove 351. A through hole 3742 is formed on the end face of the sliding plate 374 facing the insertion hole 322, and the through hole 3742 is coaxially aligned with the insertion hole 322. Both the through hole 3742 and the insertion hole 322 are circular holes.
[0058] Reference Figure 4 and Figure 6 The push rod 371 passes through the insertion hole 322. The push rod 371 can move along the axis of the insertion hole 322 and also rotate around the axis of the insertion hole 322. One end of the push rod 371 extends out of the mounting block 32 to form an operating end, and the other end of the push rod 371 is inserted into the slot 321 and passes through the through hole 3742. The top block 373 is fixedly connected to the outer circumferential surface of the push rod 371, and the top block 373 is located on the side of the slide plate 374 near the insertion hole 322.
[0059] Reference Figure 4 and Figure 6 A first stop block 3743 and a second stop block 3744 are fixedly connected to the end face of the slide plate 374 facing the top block 373. The first stop block 3743 and the second stop block 3744 are arranged circumferentially around the push rod 371. The top block 373 is located between the first stop block 3743 and the second stop block 3744. Both the first stop block 3743 and the second stop block 3744 are located on the rotation path of the top block 373 when it rotates around the axis of the insertion hole 322, so that the first stop block 3743 and the second stop block 3744 limit the rotation stroke of the top block 373. When either the first stop block 3743 or the second stop block 3744 comes into contact with the top block 373, the top block 373 continues to rotate due to the stop feedback generated by the limitation, thereby prompting the operator that the push rod 371 has switched to the corresponding working state.
[0060] Reference Figure 4 and Figure 6One end of the spring 375 is fixedly connected to the end face of the slide plate 374 facing the insertion hole 322, and the other end of the spring 375 is fixedly connected to the inner wall of the slot 321 away from the mounting plate 22. The spring 375 is in a stretched state to provide a restoring force to the slide plate 374. Furthermore, the spring 375 is sleeved on the outside of the push rod 371.
[0061] Reference Figure 4 and Figure 6 The push block 372 is located on the side of the slide plate 374 away from the insertion hole 322 and is fixedly connected to the end of the push rod 371. The push block 372 has a clearance state, a push-unlock state, and a blocking state. When the push block 372 is in the clearance state, the push block 372 is outside the hooking area between the elastic hook 34 and the locking plate 35, allowing the elastic hook 34 to hook and engage with the locking plate 35. Furthermore, when the push block 372 is in the clearance state, the top block 373 abuts against the inner wall of the slot 321 away from the mounting plate 22, at which time the push block 372 cannot continue to move towards the insertion hole 322, thus limiting the retraction stroke of the push rod 371 along the axis of the insertion hole 322.
[0062] Reference Figure 4 and Figure 6 When the push block 372 is in the push-unlocked state, the push block 372 pushes the hook of the elastic hook 34, causing the hook to disengage from the locking plate 35. When the push block 372 is in the blocking state, the push block 372 is inserted between the hook and the locking plate 35, separating the hook and the locking plate 35, and the lowest point of the push block 372 is lower than the upper end face of the locking plate 35 to prevent the hook from re-engaging with the locking plate 35.
[0063] Reference Figure 4 and Figure 6 The push block 372 can switch between the avoidance state and the push-unlock state by sliding along the axis of the socket 322 via the push rod 371. The push block 372 can switch between the push-unlock state and the blocking state by rotating around the axis of the socket 322 via the push rod 371.
[0064] The implementation principle of a distribution cabinet in this application embodiment is as follows: When the boiler body generates continuous lateral heat radiation to the hot side wall, the heat baffle 21 plays a role in shielding and isolating the heat radiation, thereby reducing the heat intensity of the hot side wall. At the same time, the hot side wall transfers the absorbed heat to the air in the air duct 23. The air inlet at the lower end of the air duct 23 continuously replenishes the outside air and rises vertically after being heated, and is discharged through the air outlet at the upper end of the air duct 23, so as to remove the heat near the hot side wall in time, thereby reducing the lateral temperature difference in the width direction of the cabinet 1 and suppressing the local warping deformation of the cabinet 1 caused by uneven thermal expansion.
[0065] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0066] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of this application should be included within the protection scope of this application.
Claims
1. A power distribution cabinet, comprising a cabinet body (1), characterized in that: A receiving groove (12) is provided on one side of the cabinet (1). A cabinet door (11) for closing the receiving groove (12) is rotatably connected to the side of the cabinet (1). A heat insulation structure (2) is provided on the side of the cabinet (1) away from the cabinet door (11). The heat insulation structure (2) includes a heat baffle plate (21) located at the end of the cabinet (1) away from the cabinet door (11). The heat baffle plate (21) is spaced apart from the side of the cabinet (1) away from the cabinet door (11) and a wind is formed between them. The air duct (23) has an air inlet and an air outlet that communicate with the outside. The air duct (23) is used to guide the outside air to enter from the bottom and flow vertically upward before being discharged from the top. The heat shield (21) has two parallel mounting plates (22) on the end face facing the cabinet (1). The cabinet (1) is located between the two mounting plates (22). A locking structure (3) connecting the mounting plates (22) and the cabinet (1) is provided.
2. A power distribution cabinet according to claim 1, characterized in that: The locking structure (3) includes a mounting box (31) disposed on the side of the cabinet (1) facing the mounting plate (22) and a mounting block (32) disposed on the side of the mounting plate (22) facing the mounting box (31) and located directly above the mounting box (31). The mounting box (31) is located on the side of the mounting plate (22) away from the heat shield (21). The mounting box (31) has a mounting cavity (311) inside. A locking rod (33) slides vertically inside the mounting cavity (311). The locking rod (33) is located away from the heat shield (21). The mounting box (31) is provided with a flexible hook (34) on the side. The upper end face of the mounting box (31) is provided with a through hole (312) for the locking rod (33) and the flexible hook (34) to pass through. The mounting block (32) is provided with a slot (321) for the locking rod (33) and the flexible hook (34) to be inserted. The inner wall of the slot (321) is provided with a locking plate (35). The flexible hook (34) includes a hook part that can hook and cooperate with the locking plate (35). The mounting box (31) is provided with a lifting assembly (36) for driving the locking rod (33) to rise and fall.
3. A power distribution cabinet according to claim 2, characterized in that: The lifting assembly (36) includes a lifting rack (363) disposed on the side of the locking rod (33) away from the elastic hook (34) and a rotating shaft (361) rotatably connected to the inner wall of the mounting cavity (311) near the cabinet (1). The rotating shaft (361) is located on the side of the lifting rack (363) away from the locking rod (33). The rotating shaft (361) extends out of the mounting box (31) in a direction away from the cabinet (1). The rotating shaft (361) is sleeved with a gear (362) that can mesh with the lifting rack (363).
4. A power distribution cabinet according to claim 3, characterized in that: The mounting box (31) has a T-shaped mounting groove (313) on the side facing the mounting plate (22). The mounting groove (313) includes a groove opening section and a groove cavity section. The width of the groove opening section is smaller than the width of the groove cavity section. The mounting groove (313) extends upward to the upper end face of the mounting box (31). The mounting groove (313) communicates with the mounting cavity (311) and is arranged opposite to the gear (362). The mounting plate (22) faces the mounting box (31). 1) One end is provided with a vertical strip (221) inserted into the mounting groove (313). The vertical strip (221) is T-shaped. A mounting rack (222) is provided on the side of the vertical strip (221) away from the mounting plate (22). The upper end face of the mounting box (31) is provided with a mounting hole (314) communicating with the mounting groove (313). The mounting rack (222) can extend into the mounting hole (314) and mesh with the gear (362).
5. A power distribution cabinet according to claim 4, characterized in that: A folded cloth (38) is fixedly connected to the lower inner wall of the cavity section. A lifting block (381) is provided at the upper end of the folded cloth (38). A locking component (39) is provided between the lifting block (381) and the mounting box (31) to connect the two. When the locking component (39) locks the lifting block (381) to the mounting box (31), the folded cloth (38) closes the cavity section.
6. A power distribution cabinet according to claim 5, characterized in that: The locking assembly (39) includes a lifting bar (391) disposed on the side of the lifting block (381) and a locking magnet (392) disposed on the inner wall of the mounting cavity (311). The lifting bar (391) is located inside the mounting cavity (311). An iron sheet (393) is disposed above both the lifting bar (391) and the lifting block (381). An mounting magnet (223) is disposed on the lower end face of the vertical bar (221). The mounting magnet (223) and the locking magnet (392) can magnetically engage with the iron sheet (393). The mounting rack (222) includes a plurality of vertically spaced lifting teeth. The distance between the iron sheet (393) and the lowermost lifting teeth of the mounting rack (222) is not greater than the distance between two adjacent lifting teeth. The lifting bar (391) and the iron sheet (393) can be inserted between two adjacent rotating teeth on the gear (362).
7. A power distribution cabinet according to claim 2, characterized in that: The mounting block (32) is provided with an unlocking component (37) for releasing the engagement between the elastic hook (34) and the locking plate (35). The slot (321) has an insertion hole (322) on its inner wall away from the mounting plate (22). The unlocking component (37) includes a push rod (371) passing through the insertion hole (322). The push rod (371) can slide along the axis of the insertion hole (322) and rotate around its axis. One end of the push rod (371) is inserted into the slot (321) and connected to a push block (372). The push block (372) is used to push the elastic hook (34) to release the engagement between the elastic hook (34) and the locking plate (35). The other end of the push rod (371) extends out of the mounting block (32). The push block (372) has… There are three states: a clearance state, a push-to-unlock state, and a blocking state. The push block (372) switches between the clearance state and the push-to-unlock state by sliding along the axis of the insertion hole (322) via the push rod (371). The push block (372) switches between the push-to-unlock state and the blocking state by rotating around the axis of the insertion hole (322) via the push rod (371). When the push block (372) is in the clearance state, the push block (372) is located outside the hooking area between the elastic hook (34) and the locking plate (35). When the push block (372) is in the push-to-unlock state, the push block (372) pushes the hook of the elastic hook (34) to release the hook from the locking plate (35). When the push block (372) is in the blocking state, the push block (372) is inserted between the hook and the locking plate (35) and separates the hook from the locking plate (35).
8. A power distribution cabinet according to claim 7, characterized in that: The locking plate (35) is provided with a sliding plate (374) that can move in the axial direction of the insertion hole (322). The sliding plate (374) has a through hole (3742) for the push rod (371) to pass through. The outer circumference of the push rod (371) is provided with a top block (373) located between the sliding plate (374) and the insertion hole (322). The top block (373) is used to drive the sliding plate (374) to move away from the insertion hole (322). A spring (375) is fixedly connected to the end face of the sliding plate (374) facing the insertion hole (322). The end of the spring (375) away from the sliding plate (374) is fixedly connected to the inner wall of the slot (321) near the insertion hole (322). The spring (375) is in a stretched state.
9. A power distribution cabinet according to claim 1, characterized in that: Below the heat shield (21) is an air intake hood (211) located below the air inlet. An air intake channel (2111) is provided inside the air intake hood (2111). One side of the air intake channel (2111) opens towards the cabinet (1), and the other side of the air intake channel (2111) faces the air inlet. A baffle structure (212) is provided inside the air intake hood (211). The baffle structure (212) includes a first baffle plate (2121) and a second baffle plate (2122) arranged sequentially along the air intake direction. The first baffle plate (2121) and the second baffle plate (2122) are used to make the air flow path in the air intake channel (2111) zigzag.