A box-type substation structure

Abstract

The application relates to the technical field of box-type substations, and particularly discloses a box-type substation structure which comprises a box body, a force bearing mechanism and a soil breaking mechanism, the force bearing mechanism is installed on the side of the box body, and the soil breaking mechanism is arranged in the force bearing mechanism; the force bearing mechanism comprises a force bearing frame, a hoisting assembly, a containing frame, a transmission assembly and an adjusting assembly, the force bearing frame is installed on the side of the box body, the hoisting assembly is slidably arranged in the force bearing frame and extends out of the top of the force bearing frame at the end, and the containing frame is installed on one side of the force bearing frame and used for containing the soil breaking mechanism; the box-type substation structure can automatically complete the whole set of actions of the soil breaking mechanism extending out, splitting soil and resetting and recycling in the hoisting process, the effect of the compacted soil layer on the box body after the long-term burying of the buried substation can be eliminated without an additional power source or manual excavation.

Description

Technical Field

[0001] This invention relates to the field of prefabricated substation technology, and specifically to a prefabricated substation structure. Background Technology

[0002] A prefabricated substation, also known as a box-type substation or prefabricated transformer substation, is a factory-prefabricated, compact indoor / outdoor power distribution device that integrates high-voltage switchgear, distribution transformers, and low-voltage power distribution equipment according to a specific wiring scheme. It organically combines transformer voltage reduction and low-voltage power distribution functions, all housed in a moisture-proof, rust-proof, dust-proof, rodent-proof, fire-proof, theft-proof, heat-insulated, fully enclosed, and movable steel structure box. It is particularly suitable for urban power grid construction and renovation, and represents a new type of substation that has emerged after civil engineering substations. An underground substation is a power facility that completely buries the traditional box-type substation underground. Its design solves the problem of site selection difficulties for surface substations caused by limited land resources, while also avoiding the incongruity of traditional box-type substations in the urban landscape.

[0003] Chinese patent document CN121618340B discloses an overload-resistant underground prefabricated substation for new energy. This substation includes an underground shell and an overload-resistant new energy distribution box connected via a lifting assembly. A raft slab is installed below the underground shell, with multiple polyurethane elastic pads fixedly connected between the raft slab and the underground shell. Multiple support piles are fixedly connected to the lower side wall of the raft slab. Adjusting cylinders are inserted at the four corners of the lower side wall of the underground shell, with adjusting bolts threaded into the cylinders. The lower ends of the adjusting bolts are fixedly connected to support seats via pressure sensors. This design disperses soil pressure on the box body through the raft slab, absorbs uneven stress caused by soil settlement through the polyurethane elastic pads, and adjusts the height of the underground shell by adjusting the bolts to correct the box's levelness, effectively avoiding box deformation and cracking caused by soil settlement. The design also includes a lifting assembly; a lifting motor drives a threaded rod to rotate, causing the threaded cylinder to lift a lifting plate to raise the distribution box above ground for maintenance.

[0004] However, the structural design of the aforementioned technologies, while solving the impact of soil settlement on the stability of the enclosure structure and the heat dissipation and maintenance issues, and enabling the internal distribution box to move vertically upwards, gradually compacts and consolidates the backfill soil under the continuous action of factors such as its own weight, groundwater migration, freeze-thaw cycles, and ground loads as the burial time increases. The porosity between particles decreases and the density increases, eventually forming a compacted soil layer that is tightly attached to the enclosure surface. This compacted soil layer not only wraps around the outer wall of the enclosure but also embeds itself into the gaps in the local structure of the outer wall, forming a lock-up effect. When the entire enclosure needs to be lifted out for maintenance, the lock-up state between the soil layer and the enclosure causes a sharp increase in lifting resistance. Forced lifting can easily cause deformation of the enclosure structure and cracking of welds. In severe cases, it can even lead to the enclosure being scrapped and unable to continue to be used. On the other hand, using large-area excavation to remove the lock-up requires a large amount of construction work and a long cycle, and excavation conditions are often not available in urban environments.

[0005] Therefore, a prefabricated substation structure was proposed to address the aforementioned problems. Summary of the Invention

[0006] This invention provides a prefabricated substation structure, aiming to solve the problem in related technologies where long-term burial easily leads to the formation of a compacted soil layer around the prefabricated box, making it inconvenient to lift the box as a whole.

[0007] The prefabricated substation structure of the present invention includes a prefabricated box body, a load-bearing mechanism and a ground-breaking mechanism. The load-bearing mechanism is installed on the side of the prefabricated box body, and the ground-breaking mechanism is disposed in the load-bearing mechanism. The load-bearing mechanism includes a load-bearing frame, a hoisting assembly, a receiving frame, a transmission assembly, and an adjusting assembly. The load-bearing frame is installed on the side of the main body of the box. The hoisting assembly is slidably disposed inside the load-bearing frame and its end extends out of the top of the load-bearing frame. The receiving frame is installed on one side of the load-bearing frame and is used to accommodate the soil-breaking mechanism. The transmission assembly is rotatably disposed inside the load-bearing frame and is connected to the hoisting assembly and the soil-breaking mechanism respectively. The adjusting assembly is disposed inside the load-bearing frame and can contact the soil-breaking mechanism. When the hoisting assembly moves upward, it can push the soil breaking mechanism to extend out of the receiving frame and insert into the soil through the transmission assembly. When the hoisting assembly continues to move upward, it can push the extended soil breaking mechanism to open through the adjustment assembly to split the soil.

[0008] Beneficial effects: By setting a load-bearing mechanism and a soil-breaking mechanism on the side of the main body of the enclosure, and setting a hoisting component, a transmission component, and an adjustment component in the load-bearing mechanism, the hoisting component can push the soil-breaking mechanism out of the receiving frame and insert it into the compacted soil around the outer perimeter of the enclosure body when it moves upward. Then, when the hoisting component continues to move upward, the adjustment component pushes the extended soil-breaking mechanism to open, thereby cracking the compacted soil layer from the inside and dividing it into several independent soil blocks. Since the overall continuity of the soil layer is destroyed, the interlocking between the soil layer and the outer wall of the enclosure body is released, and the hoisting resistance is greatly reduced. This allows the hoisting equipment to directly and smoothly lift the main body of the enclosure without the need for large-scale excavation to release the locked state. This avoids the problems of enclosure structure deformation, weld cracking, or even enclosure scrapping caused by forced lifting. At the same time, it shortens the maintenance cycle and reduces construction costs. It is particularly suitable for the maintenance of underground substations in urban environments where excavation is not feasible.

[0009] Preferably, the hoisting assembly includes a hoisting rod, a limiting plate, a meshing component, a mounting sleeve, and a top block. The hoisting rod is vertically and elastically slidably connected to the inner bottom wall of the support frame. The top end of the hoisting rod penetrates the top of the support frame and extends to the outside. The limiting plate is installed on the outside of the hoisting rod. The meshing component is installed on the hoisting rod and meshes with the transmission assembly. The top block is located on one side of the hoisting rod and faces the adjustment assembly.

[0010] Its effect is that during the upward movement of the hoisting rod, it can first drive the transmission component to move through the meshing parts, and then push the adjustment component to move laterally through the top block on the mounting sleeve. This realizes the two-stage action of the earth-breaking mechanism extending first and then opening. In addition, the limit plate can limit the stroke of the hoisting rod to prevent the hoisting rod from extending too far out of the support frame, thus ensuring the safety and reliability of the hoisting process.

[0011] Preferably, the meshing component includes a connecting plate and a rack. The connecting plate is installed on the outside of the hoisting rod, and the rack is installed on the bottom side of the connecting plate and meshes with the transmission assembly. There are two racks arranged vertically, and the two racks are connected by a fixing plate.

[0012] Preferably, the transmission assembly includes a gear, a rotating rod, and a crankshaft. The gear meshes with the hoisting assembly. One end of the rotating rod is mounted on the gear, and the other end is rotatably connected to the inner wall of the support frame. There are multiple crankshafts, which are installed on the rotating rod at equal intervals. The crankshafts are hinged to the soil breaking mechanism.

[0013] Its effect is that during the upward movement of the hoisting rod, the first rack engages with the gear, which drives multiple crankshafts to rotate synchronously through the rotating rod. This simultaneously pushes all the soil-breaking mechanisms to extend out of the receiving frame, ensuring the consistency of the actions of all soil-breaking mechanisms on the same support frame. This avoids the problem of uneven soil-breaking effect caused by some soil-breaking mechanisms not extending in place, thus improving soil-breaking efficiency and reliability. When the first rack separates from the gear, the second rack engages with the gear again when the hoisting rod resets, thereby driving the soil-breaking mechanism to automatically reset and retract into the receiving frame. This achieves automatic extension and automatic retraction of the soil-breaking mechanism without the need for an additional power source.

[0014] Preferably, the adjustment assembly includes a horizontal plate, an elastic telescopic rod, and a plurality of push blocks. One end of the elastic telescopic rod is installed on the inner wall of the support frame, and one end of the horizontal plate is installed on the other end of the elastic telescopic rod. The other end of the horizontal plate has an inclined surface that matches the inclined side of the top block. The plurality of push blocks are all installed on the side of the horizontal plate facing the soil breaking mechanism, and the spacing between the plurality of push blocks gradually increases.

[0015] Its effect is that when the top block moves upward, it can convert the vertical displacement into the lateral displacement of the horizontal plate through the inclined plane. When the horizontal plate moves horizontally, multiple push blocks push the soil breaking mechanism in sequence. As the spacing between the push blocks gradually increases, the cracks in the soil can gradually expand and penetrate from one end to the other end, avoiding the problem that the soil resistance is too great and cannot be broken due to all the soil breaking mechanisms opening at the same time. At the same time, the elastic telescopic rod can push the horizontal plate to automatically reset after the hoisting is completed.

[0016] Preferably, the soil-breaking mechanism includes a sliding component, a jacking component, and multiple sets of soil-breaking components. The sliding component is slidably connected to the inner bottom wall of the receiving frame and hinged to the transmission component. The multiple sets of soil-breaking components are evenly distributed on the sliding component along the height direction of the sliding component. The receiving frame has through slots corresponding to the multiple sets of soil-breaking components. Each set of soil-breaking components has two components, which are arranged in close contact with each other. The jacking component is located inside the sliding component and is in contact with the adjusting component. When the jacking component is pushed by the adjusting component, it can open the two soil-breaking components.

[0017] Its effect is that when the sliding component is pushed by the transmission component, it can drive all the soil breaking components to extend out of the through groove and insert into the soil at the same time. Then, when the jacking component is pushed by the adjustment component, it can make the two soil breaking components in each group open at the same time, thereby splitting the soil at different height positions at the same time, so that the cracks are fully connected along the height direction of the main body of the box, improving the soil breaking coverage and splitting effect.

[0018] Preferably, the sliding assembly includes a sliding plate, a hinge seat, and a hinge arm. The sliding plate is slidably connected to the inner bottom wall of the receiving frame. The hinge seat is installed on the side of the sliding plate facing the transmission assembly. One end of the hinge arm is hinged to the hinge seat, and the other end is hinged to the crankshaft.

[0019] Preferably, the soil-breaking assembly includes a soil-breaking component, a slider, a guide rod, a mounting plate, and a second spring. One end of the slider is mounted on the soil-breaking component, and the other end of the slider extends through the sliding plate into its interior. The other end of the slider has a bevel. The guide rod is mounted on one side of the slider. The mounting plate is slidably connected to the outside of the guide rod and mounted on the inner wall of the sliding plate. The second spring is sleeved on the outside of the guide rod, and its two ends are respectively mounted on the slider and the mounting plate.

[0020] Its effect is that the inclined side structure of the soil breaking component makes it easier to break the soil and reduce the resistance to soil entry. The inclined side of the slider end cooperates with the inclined block of the jacking component to realize the opening action. The guide rod and the mounting plate provide guidance for the movement of the slider, ensuring the symmetry and stability of the two soil breaking components when they open. After the jacking component releases its force, the second spring pushes the slider to reset, so that the soil breaking component closes automatically, making it easy for the soil breaking mechanism to be retracted into the receiving frame.

[0021] Preferably, the jacking assembly includes a vertical plate, a connecting column, ball bearings, and multiple inclined blocks. The vertical plate is elastically slidably connected to the inside of a sliding plate. One end of the connecting column is mounted on the vertical plate, and the other end passes through the sliding plate and extends to the outside of the sliding plate. The ball bearings are slidably connected to the other end of the connecting column and slidably contact the jacking block. Multiple inclined blocks are mounted on the vertical plate, and the inclined blocks correspond to the inclined edges on the slider in the soil breaking assembly.

[0022] Preferably, it also includes a sealing component, which includes a guide frame and a sealing plate. The guide frame is installed on the inner wall of the receiving frame and is located near the through groove. One end of the sealing plate is elastically slidably connected to the guide frame, and the other end of the sealing plate extends out of the guide frame and is always in contact with the side of the excavator.

[0023] By adopting the above technical solution, the beneficial effects of the present invention are as follows: it can automatically complete the entire set of actions of extending the soil breaking mechanism, opening and splitting the soil, and resetting and retrieving during the hoisting process, without the need for additional power source or manual excavation, thus eliminating the locking effect of the compacted soil layer on the box body after long-term burial of the underground substation, realizing the safe and efficient hoisting out of the box body for maintenance, and has the advantages of reasonable structure, convenient operation, low construction cost, and wide applicability. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the present invention.

[0025] Figure 2This is a structural schematic diagram of the load-bearing mechanism in a specific embodiment of the present invention.

[0026] Figure 3 This is a cross-sectional structural diagram of the support frame in a specific embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the hoisting assembly in a specific embodiment of the present invention.

[0028] Figure 5 This is a partial cross-sectional structural diagram of the lifting rod in a specific embodiment of the present invention.

[0029] Figure 6 This is a cross-sectional structural diagram of the guide frame in a specific embodiment of the present invention.

[0030] Figure 7 This is a schematic diagram of the transmission assembly in a specific embodiment of the present invention.

[0031] Figure 8 This is a cross-sectional structural diagram of the sliding plate in a specific embodiment of the present invention.

[0032] Figure 9 This is a schematic diagram of the structure of the jacking assembly in a specific embodiment of the present invention.

[0033] Figure label: 10. Main body of the container; 20. Load-bearing mechanism; 21. Load-bearing frame; 22. Lifting assembly; 221. Lifting rod; 222. Limiting plate; 223. Connecting plate; 224. Rack; 225. Mounting sleeve; 226. Top block; 227. Guide column; 228. Spring 1; 23. Receiving frame; 24. Through groove; 25. Sealing assembly; 251. Guide frame; 252. Elastic sheet; 253. Sealing plate; 26. Transmission assembly; 261. Gear; 262. Rotating rod; 263. Crankshaft; 27. Adjusting assembly; 271. Horizontal plate; 272. Elastic telescopic rod; 273. Inclined surface; 274. Push block; 30. Soil-breaking mechanism; 31. Sliding assembly; 311. Sliding plate; 312. Hinge seat; 313. Hinge arm; 32. Soil-breaking assembly; 321. Soil-breaking component; 322. Slider; 323. Guide rod; 324. Mounting plate; 325. Spring II; 33. Pushing assembly; 331. Vertical plate; 332. Connecting column; 333. Ball bearing; 334. Inclined block; 335. Sliding rod; 336. Spring III. Detailed Implementation

[0034] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0035] like Figures 1 to 9 As shown, the prefabricated substation structure of the present invention includes a prefabricated body 10, load-bearing mechanisms 20, and ground-breaking mechanisms 30. There are four load-bearing mechanisms 20, which are respectively installed on the four sides of the prefabricated body 10. There are multiple sets of ground-breaking mechanisms 30, with each set of ground-breaking mechanisms 30 disposed within each load-bearing mechanism 20.

[0036] When it is necessary to lift the entire box body 10 out, the soil breaking mechanism 30 first extends the load-bearing mechanism 20 and inserts into the compacted soil around the box body 10 and splits the soil, so that the compacted soil layer that originally covered the box body 10 is divided into several independent soil blocks, thereby releasing the interlocking effect between the soil layer and the box body 10, making it easier to lift the box body 10 out directly.

[0037] The load-bearing mechanism 20 includes a load-bearing frame 21, a hoisting assembly 22, a receiving frame 23, a sealing assembly 25, a transmission assembly 26, and an adjusting assembly 27. The load-bearing frame 21 is installed on one side of the main body 10 of the housing. The hoisting assembly 22 is located inside the load-bearing frame 21, with its end extending beyond the top of the load-bearing frame 21 and outwards for connection to external hoisting equipment. Multiple receiving frames 23 are installed at equal intervals on one side of the load-bearing frame 21 and communicate with its interior. In this embodiment, there are three receiving frames 23 along the length of the main body 10 and two along its width. In other embodiments, the specific number of receiving frames 23 can be adjusted according to the length and width of the main body 10. The number of soil-breaking mechanisms 30 in each load-bearing mechanism 20 is the same as the number of receiving frames 23, and the soil-breaking mechanisms 30 are located inside the receiving frames 23. Multiple through slots 24 for the soil-breaking mechanisms 30 to extend from one side of each receiving frame 23.

[0038] There are multiple sets of sealing components 25, each corresponding to a through slot 24 on the receiving frame 23. Each set of sealing components 25 consists of two components, both of which are located on the inner wall of the receiving frame 23 and positioned close to both sides of the through slot 24. The two sealing components 25 are always in contact with the soil-breaking mechanism 30 to prevent soil from outside the main body 10 from entering the receiving frame 23 through the through slot 24. There are two transmission components 26, arranged vertically and rotatably inside the support frame 21. Both transmission components 26 mesh with the hoisting component 22 and are also hinged to the soil-breaking mechanism 30. An adjusting component 27 is located on one side of the inner wall of the support frame 21. One end of the adjusting component 27 can contact the hoisting component 22, and one side of the adjusting component 27 can contact the soil-breaking mechanism 30.

[0039] When the main body 10 of the container needs to be lifted out as a whole, the lifting assembly 22 is first connected to the lifting equipment. Then, the lifting equipment drives the lifting assembly 22 to move upward. During the upward movement, the lifting assembly 22 can push the soil-breaking mechanism 30 closer to the inner wall of the receiving frame 23 through the transmission assembly 26, so that the soil-breaking mechanism 30 extends out of the receiving frame 23 and inserts into the soil. As the lifting assembly 22 continues to move upward, the lifting assembly 22 can push the adjusting assembly 27 to move. At this time, the adjusting assembly 27 pushes the soil-breaking mechanism 30 extending out of the receiving frame 23 to open, so as to split the soil, thereby dividing the compacted soil layer around the main body 10 into several independent soil blocks.

[0040] The lifting assembly 22 includes a lifting rod 221, a limiting plate 222, a meshing component, a mounting sleeve 225, a top block 226, a guide post 227, and a spring 228. The guide post 227 is installed on one side of the inner bottom wall of the support frame 21, and the lifting rod 221 is slidably connected to the outside of the guide post 227. The bottom end of the lifting rod 221 has a groove for the guide post 227 to slide. The two ends of the spring 228 are respectively installed on the inner bottom wall of the lifting rod 221 and the top end of the guide post 227 to allow the lifting rod 221 to return to its original position. The top end of the lifting rod 221 penetrates the top of the support frame 21 and extends to the outside of the support frame 21. The top end of the lifting rod 221 has a lifting hole for connection with lifting equipment. The limiting plate 222 is installed on the outside of the lifting rod 221 and is located near the inner top wall of the support frame 21. There are two engaging components, both mounted on the lifting rod 221 and located below the limiting plate 222. A mounting sleeve 225 is mounted on the outside of the lifting rod 221 and between the two engaging components. A top block 226 is mounted on one side of the mounting sleeve 225, and the top block 226 has two symmetrically arranged bevels on the side facing the adjusting assembly 27 for pushing the adjusting assembly 27 to move laterally. In the initial state, the top block 226 is located below the adjusting assembly 27.

[0041] The meshing components include a connecting plate 223 and a rack 224. The connecting plate 223 is mounted on the outside of the lifting rod 221, and the rack 224 is mounted on the bottom side of the connecting plate 223. The rack 224 meshes with the transmission assembly 26 to drive the transmission assembly 26 to rotate. There are two racks 224, arranged vertically and connected by a fixing plate. The two racks 224 enable the transmission assembly 26 to rotate one revolution.

[0042] The transmission assembly 26 includes a gear 261, a rotating rod 262, and a crankshaft 263. There are multiple crankshafts 263, the number of which is the same as the number of earth-breaking mechanisms 30 in its own load-bearing mechanism 20. Each crankshaft 263 meshes with its corresponding earth-breaking mechanism 30. Multiple crankshafts 263 are installed at equal intervals on the rotating rod 262. One end of the rotating rod 262 is mounted on the gear 261, which meshes with a rack 224. The other end of the rotating rod 262 is rotatably connected to one side of the inner wall of the load-bearing frame 21.

[0043] The adjusting assembly 27 includes a horizontal plate 271, an elastic telescopic rod 272, and push blocks 274. The fixed end of the elastic telescopic rod 272 is installed on one side of the inner wall of the support frame 21, and the horizontal plate 271 is installed on the movable end of the elastic telescopic rod 272. The end of the horizontal plate 271 near the hoisting rod 221 has an inclined surface 273 that matches the top block 226. There are multiple push blocks 274, equal to the number of the earth-breaking mechanism 30. The push blocks 274 are installed on the side of the horizontal plate 271 facing the earth-breaking mechanism 30, and the spacing between the multiple push blocks 274 gradually increases. The push blocks 274 are in rolling contact with the earth-breaking mechanism 30.

[0044] When the main body 10 of the box needs to be hoisted, the hoisting rod 221 is first moved upward. During the upward movement of the hoisting rod 221, the connecting plate 223 drives the gear 261 to rotate through the rack 224. The gear 261 drives multiple crankshafts 263 to rotate simultaneously through the rotating rod 262, thereby pushing multiple soil-breaking mechanisms 30 out of the receiving frame 23 at the same time. After the soil-breaking mechanism 30 is pushed out, the hoisting rod 221 continues to move upward. At this time, the hoisting rod 221 pushes the horizontal plate 271 to move laterally through the top block 226 on the mounting sleeve 225, and the elastic telescopic rod 272 is compressed. During the movement of the horizontal plate 271, the push block 274 pushes the soil-breaking mechanism 30 to move, so that the extended soil-breaking mechanism 30 unfolds, causing the soil pressing on the periphery of the main body 10 to crack.

[0045] The sealing assembly 25 includes a guide frame 251, an elastic sheet 252, and a sealing plate 253. The guide frame 251 is installed on the inner wall of the receiving frame 23 and is located near the through groove 24. One end of the elastic sheet 252 is installed on one side of the inner wall of the guide frame 251, and the other end of the elastic sheet 252 is installed on the sealing plate 253. One end of the sealing plate 253 extends out of the guide frame 251 and is in contact with the soil breaking mechanism 30.

[0046] When the main body 10 of the box is buried underground, the elastic sheet 252 can push the sealing plate 253 to always fit the soil breaking mechanism 30, so as to prevent soil from entering the receiving frame 23 through the channel 24 during the backfilling process.

[0047] The soil-breaking mechanism 30 includes a sliding component 31, a soil-breaking component 32, and a jacking component 33. The sliding component 31 is slidably connected to the inner bottom wall of the receiving frame 23. Multiple sets of soil-breaking components 32 are evenly distributed along the height direction of the sliding component 31, and each set corresponds to one of the multiple through slots 24 on the receiving frame 23. There are two soil-breaking components 32, which are fitted together. In the initial state, the ends of the soil-breaking components 32 are located inside the through slots 24 and flush with the sides of the receiving frame 23. The jacking component 33 is disposed inside the sliding component 31 and contacts the multiple sets of soil-breaking components 32. The pusher block 274 can push the jacking component 33 to move inside the sliding component 31, thereby opening the soil-breaking components 32.

[0048] The sliding assembly 31 includes a sliding plate 311, a hinge seat 312, and a hinge arm 313. The sliding plate 311 is slidably connected to the inner bottom wall of the corresponding receiving frame 23. The hinge seat 312 is installed on the side of the sliding plate 311 facing the crankshaft 263. One end of the hinge arm 313 is hinged to the hinge seat 312, and the other end of the hinge arm 313 is hinged to the crankshaft 263.

[0049] When the hoisting rod 221 moves upward, the connecting plate 223 drives the gear 261 to rotate through the rack 224. The gear 261 drives multiple crankshafts 263 to rotate simultaneously through the rotating rod 262. The crankshafts 263 push the sliding plate 311 to move towards the inner wall of the receiving frame 23 through the hinge arm 313, so that the soil breaking component 32 extends out of the through groove 24 and inserts into the soil.

[0050] The soil-breaking assembly 32 includes a soil-breaking component 321, a slider 322, a guide rod 323, a mounting plate 324, and a spring 325. The soil-breaking component 321 is used to insert into the soil. Its right side is a vertical long side, and its bottom has a stepped base. The left side of the soil-breaking component 321 consists of two connected inclined side sections that converge from bottom to top and to the right, ending at the top of the vertical long side, facilitating soil breaking and reducing soil penetration resistance. The sealing plate 253 is always in contact with the side of the soil-breaking component 321. One end of the slider 322 is mounted on the base of the soil-breaking component 321, and the other end of the slider 322 passes through the sliding plate 311 and extends into the interior of the sliding plate 311. The other end of the slider 322 has an inclined edge. The guide rod 323 is mounted on one side of the slider 322, and the mounting plate 324 is slidably connected to the outside of the guide rod 323. The mounting plate 324 is mounted on one side of the inner wall of the sliding plate 311. Spring 325 is sleeved on the outside of one end of guide rod 323, and the two ends of spring 325 are respectively mounted on slider 322 and mounting plate 324.

[0051] The jacking assembly 33 includes a vertical plate 331, a connecting column 332, ball bearings 333, inclined blocks 334, and elastic elements. There are two elastic elements, arranged vertically on the inner wall of the sliding plate 311, with the vertical plate 331 slidably mounted on them. One end of the connecting column 332 is installed in the middle of one side of the vertical plate 331, and the other end passes through the sliding plate 311 and extends to its outer surface. The ball bearings 333 are tactilely connected to the other end of the connecting column 332 and can tactilely connect with the push block 274. There are multiple inclined blocks 334, each corresponding to one set of earth-breaking assemblies 32. Each inclined block 334 corresponds to the inclined edge of a slider 322, and each inclined block 334 is located between two sliders 322 in each set of earth-breaking assemblies 32.

[0052] The elastic element includes a slide rod 335 and a spring 336. The two ends of the slide rod 335 are respectively installed on both sides of the inner wall of the sliding plate 311. The vertical plate 331 is slidably connected to the slide rod 335. The spring 336 is sleeved on the outer side of the slide rod 335. One end of the spring 336 is installed on one side of the inner wall of the sliding plate 311, and the other end of the spring 336 is installed on one side of the vertical plate 331.

[0053] When the lifting rod 221 moves the top block 226 upward via the mounting sleeve 225, the top block 226 moves multiple push blocks 274 via the horizontal plate 271. During this movement, the push blocks 274 sequentially push the ball bearings 333 in the multiple soil-breaking mechanisms 30, causing the ball bearings 333 to move the connecting column 332 towards the interior of the sliding plate 311. During this movement, the connecting column 332 causes the vertical plate 331 to slide on the sliding rod 335 and compresses the spring 336. As the vertical plate 331 moves, the inclined block 334, via the inclined edge of the slider 322, pushes the two sliders 322 away from each other, thereby gradually separating the two soil-breaking components 321 inserted into the soil to split the soil. As the multiple push blocks 274 sequentially push the connecting column 332, the soil-breaking components 321 on the multiple soil-breaking mechanisms 30 sequentially split the soil, causing the cracks in the soil to continuously expand and eventually form cracks around the main body 10 of the box, thus disrupting the overall continuity of the compacted soil layer.

[0054] Working principle: Under normal buried and used conditions, the load-bearing mechanism 20 is installed on the four sides of the box body 10, the soil breaking mechanism 30 is housed inside the receiving frame 23, and the end of the soil breaking component 32 is located in the through groove 24 and is flush with the side of the receiving frame 23. At this time, the sealing component 25 pushes the sealing plate 253 to always fit the soil breaking component 321 under the action of the elastic plate 252, preventing external soil from entering the receiving frame 23 through the through groove 24 and ensuring that the mechanism is in standby state.

[0055] When the main body 10 of the housing needs to be lifted out for maintenance, first connect the lifting equipment to the lifting hole at the top of the lifting rod 221, and start the lifting equipment to drive the lifting rod 221 to slide upward along the guide column 227. During the upward movement of the lifting rod 221, the rack 224 on the connecting plate 223 moves upward synchronously. At this time, the first rack 224 drives the gear 261 meshing with it to rotate. The gear 261 drives multiple equally spaced crankshafts 263 to rotate simultaneously through the rotating rod 262. When each crankshaft 263 rotates, it pushes the hinge seat 312 through the hinge arm 313, thereby pushing the sliding plate 311 closer to the inner wall of the receiving frame 23. When the sliding plate 311 moves, it drives multiple sets of soil-breaking components 32 installed on it to move synchronously, so that the soil-breaking component 321 extends out of the receiving frame 23 from the initial position through the through groove 24 and inserts into the compacted soil around the outer periphery of the main body 10 of the housing. During this process, the sealing plate 253 remains in contact with the soil breaking component 321 and slides under the action of the elastic sheet 252, ensuring that there is no soil backflow at the passage 24.

[0056] After the soil-breaking component 321 is inserted into the soil, the first rack 224 separates from the gear 261, and then the lifting rod 221 continues to move upward. At this time, the top block 226 on the outside of the mounting sleeve 225 moves upward and contacts the inclined surface 273 on the horizontal plate 271. The inclined side of the top block 226 engages with the inclined surface 273, converting the vertical displacement of the top block 226 into the lateral displacement of the horizontal plate 271, pushing the horizontal plate 271 to overcome the elastic force of the elastic telescopic rod 272 and move laterally towards the soil-breaking mechanism 30. When the horizontal plate 271 moves, the multiple push blocks 274 on it sequentially push the balls 333 of the corresponding push assembly 33 in the soil-breaking mechanism 30. The balls 333 drive the vertical plate 331 to move along the slide rod 335 into the sliding plate 311 through the connecting column 332 and compress the spring 336.

[0057] When the vertical plate 331 moves, its multiple inclined blocks 334 are inserted between the two sliders 322 of each set of soil-breaking components 32. Through the cooperation of the inclined blocks 334 and the inclined sides of the sliders 322, the two sliders 322 are pushed away from each other. When the sliders 322 move away, they drive the two soil-breaking components 321 to gradually open, so that the soil-breaking components 321 inserted into the soil change from a closed state to an open state, thereby cracking the compacted soil layer from the inside. As the distance between the multiple push blocks 274 gradually increases, the push blocks 274 push the balls 333 of each soil-breaking mechanism 30 in sequence, so that the multiple soil-breaking mechanisms 30 open and split the soil from left to right along the length of the support frame 21. The cracks in the soil expand continuously from left to right and penetrate each other, eventually forming a continuous ring of cracks on the outer perimeter of the four sides of the box body 10, dividing the compacted soil layer that originally surrounded the box body 10 into several independent soil blocks.

[0058] After the compacted soil layer is broken up, the interlocking action between the soil layer and the outer wall of the main body 10 is released, significantly reducing the lifting resistance. At this point, the lifting equipment continues lifting, causing the second rack 224 to mesh with the gear 261, thereby resetting the soil-breaking mechanism 30. When the soil-breaking mechanism 30 is fully reset, the limiting plate 222 contacts the inner top wall of the support frame 21 to prevent the lifting rod 221 from extending beyond the support frame 21. Finally, the lifting equipment, through the lifting rod 221, smoothly raises the support frame 21 and the main body 10 as a whole, safely lifting the main body 10 out of the ground, avoiding structural deformation or weld cracking caused by locking effects.

[0059] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A prefabricated substation structure, comprising a prefabricated body (10), characterized in that, It also includes a load-bearing mechanism (20) and a soil-breaking mechanism (30), wherein the load-bearing mechanism (20) is installed on the side of the main body of the box (10), and the soil-breaking mechanism (30) is disposed in the load-bearing mechanism (20); The load-bearing mechanism (20) includes a load-bearing frame (21), a hoisting assembly (22), a receiving frame (23), a transmission assembly (26), and an adjusting assembly (27). The load-bearing frame (21) is installed on the side of the main body (10). The hoisting assembly (22) is slidably disposed inside the load-bearing frame (21) and its end extends out of the top of the load-bearing frame (21). The receiving frame (23) is installed on one side of the load-bearing frame (21) and is used to accommodate the soil-breaking mechanism (30). The transmission assembly (26) is rotatably disposed inside the load-bearing frame (21) and is connected to the hoisting assembly (22) and the soil-breaking mechanism (30) respectively. The adjusting assembly (27) is disposed inside the load-bearing frame (21) and can contact the soil-breaking mechanism (30). When the hoisting assembly (22) moves upward, it can push the soil breaking mechanism (30) to extend out of the receiving frame (23) and insert into the soil through the transmission assembly (26). When the hoisting assembly (22) continues to move upward, it can push the extended soil breaking mechanism (30) to open to split the soil through the adjustment assembly (27).

2. The prefabricated substation structure according to claim 1, characterized in that, The hoisting assembly (22) includes a hoisting rod (221), a limiting plate (222), a meshing component, a mounting sleeve (225), and a top block (226). The hoisting rod (221) is vertically elastically slidably connected to the inner bottom wall of the support frame (21). The top end of the hoisting rod (221) penetrates the top of the support frame (21) and extends to the outside. The limiting plate (222) is installed on the outside of the hoisting rod (221). The meshing component is installed on the hoisting rod (221) and meshes with the transmission assembly (26). The top block (226) is located on one side of the hoisting rod (221) and faces the adjustment assembly (27).

3. The prefabricated substation structure according to claim 2, characterized in that, The meshing component includes a connecting plate (223) and a rack (224). The connecting plate (223) is installed on the outside of the hoisting rod (221). The rack (224) is installed on the bottom side of the connecting plate (223) and meshes with the transmission assembly (26). There are two racks (224) arranged vertically, and the two racks (224) are connected by a fixing plate.

4. The prefabricated substation structure according to claim 3, characterized in that, The transmission assembly (26) includes a gear (261), a rotating rod (262), and a crankshaft (263). The gear (261) meshes with the hoisting assembly (22). One end of the rotating rod (262) is mounted on the gear (261), and the other end is rotatably connected to the inner wall of the support frame (21). There are multiple crankshafts (263) that are evenly spaced on the rotating rod (262). The crankshafts (263) are hinged to the soil breaking mechanism (30).

5. The prefabricated substation structure according to claim 4, characterized in that, The adjustment assembly (27) includes a horizontal plate (271), an elastic telescopic rod (272), and a plurality of push blocks (274). One end of the elastic telescopic rod (272) is installed on the inner wall of the support frame (21), and one end of the horizontal plate (271) is installed on the other end of the elastic telescopic rod (272). The other end of the horizontal plate (271) has an inclined surface (273), which is adapted to the inclined side of the top block (226). The plurality of push blocks (274) are all installed on the side of the horizontal plate (271) facing the soil breaking mechanism (30), and the spacing between the plurality of push blocks (274) gradually increases.

6. The prefabricated substation structure according to claim 5, characterized in that, The soil breaking mechanism (30) includes a sliding component (31), a jacking component (33), and multiple sets of soil breaking components (32). The sliding component (31) is slidably connected to the inner bottom wall of the receiving frame (23) and hinged to the transmission component (26). Multiple sets of soil breaking components (32) are evenly distributed on the sliding component (31) along the height direction of the sliding component (31). The receiving frame (23) is provided with through slots (24) corresponding to the multiple sets of soil breaking components (32). Each set of soil breaking components (32) has two components. The two soil breaking components (32) are set close to each other. The jacking component (33) is set inside the sliding component (31) and is in contact with the adjusting component (27). When the jacking component (33) is pushed by the adjusting component (27), the two soil breaking components (32) can be opened.

7. The prefabricated substation structure according to claim 6, characterized in that, The sliding assembly (31) includes a sliding plate (311), a hinge seat (312), and a hinge arm (313). The sliding plate (311) is slidably connected to the inner bottom wall of the receiving frame (23). The hinge seat (312) is mounted on the side of the sliding plate (311) facing the transmission assembly (26). One end of the hinge arm (313) is hinged to the hinge seat (312), and the other end is hinged to the crankshaft (263).

8. The prefabricated substation structure according to claim 7, characterized in that, The soil-breaking component (32) includes a soil-breaking element (321), a slider (322), a guide rod (323), a mounting plate (324), and a second spring (325). One end of the slider (322) is mounted on the soil-breaking element (321), and the other end of the slider (322) extends through the sliding plate (311) into its interior. The other end of the slider (322) has a bevel. The guide rod (323) is mounted on one side of the slider (322). The mounting plate (324) is slidably connected to the outside of the guide rod (323) and mounted on the inner wall of the sliding plate (311). The second spring (325) is sleeved on the outside of the guide rod (323) and its two ends are respectively mounted on the slider (322) and the mounting plate (324).

9. The prefabricated substation structure according to claim 8, characterized in that, The jacking assembly (33) includes a vertical plate (331), a connecting column (332), a ball bearing (333), and multiple inclined blocks (334). The vertical plate (331) is elastically slidably connected to the inside of the sliding plate (311). One end of the connecting column (332) is mounted on the vertical plate (331), and the other end passes through the sliding plate (311) and extends to the outside of the sliding plate (311). The ball bearing (333) is slidably connected to the other end of the connecting column (332) and slidably contacts the push block (274). Multiple inclined blocks (334) are mounted on the vertical plate (331). The inclined blocks (334) correspond to the inclined edges on the slider (322) in the soil breaking assembly (32).

10. The prefabricated substation structure according to claim 9, characterized in that, It also includes a sealing assembly (25), which includes a guide frame (251) and a sealing plate (253). The guide frame (251) is installed on the inner wall of the receiving frame (23) and is located near the through groove (24). One end of the sealing plate (253) is elastically slidably connected in the guide frame (251), and the other end of the sealing plate (253) extends out of the guide frame (251) and is always in contact with the side of the excavator (321).

Images