Prefabricated assembly type box transformer substation foundation structure

Abstract

The invention relates to a prefabricated box transformer substation foundation structure, and belongs to the technical field of box transformer substation foundation structures. Comprising a bottom plate, first side plates are arranged on the left side and the right side of the upper end of the bottom plate respectively, second side plates are arranged on the front side and the rear side of the upper end of the bottom plate respectively, and the first side plates and the second side plates jointly form combined side plates; a combined top plate sleeves the outer side of the upper end of the combined side plate; the bottom plate is connected with the first side plate and the second side plate through a locking anti-seismic mechanism, the locking anti-seismic mechanism comprises positioning supporting blocks and positioning supporting grooves, the positioning supporting blocks are arranged on the bottom plate, and the positioning supporting grooves are formed in the lower end of the first side plate and the lower end of the second side plate correspondingly. The positioning supporting blocks are inserted into the positioning supporting grooves in the lower ends of the first side plate and the second side plate correspondingly, and locking assemblies are arranged between the positioning supporting blocks and the positioning supporting grooves. The problems that an existing prefabricated box transformer substation foundation is long in construction period and much construction waste is generated in construction are solved.

Description

Technical Field

[0001] This invention belongs to the technical field of prefabricated substation foundation structure, specifically relating to a prefabricated prefabricated substation foundation structure. Background Technology

[0002] With the gradual advancement of smart distribution network construction, the number of box-type substations on distribution lines is constantly increasing. The contradiction between the high labor cost and long cycle of box-type substation construction and the urgency of distribution line projects is becoming increasingly prominent. Traditional manual construction methods can no longer meet the needs of power grid construction and development. In the process of box-type substation construction, foundation construction occupies a large amount of working time.

[0003] According to the "Typical Design of Distribution Network Engineering of State Grid Corporation of China - 10kV Distribution Station Room Volume", the foundation of the box-type substation should be integrally cast with reinforced concrete. Currently, the construction of box-type substation foundations is mainly carried out manually on-site. The construction steps are as follows: excavation of the foundation pit, pouring of concrete cushion layer, formwork and reinforcement binding, integral concrete pouring, and curing. This results in a long construction cycle and a lot of construction waste generated during the construction of existing prefabricated box-type substation foundations. Therefore, this application designs a prefabricated box-type substation foundation structure to solve the above problems. Summary of the Invention

[0004] This invention overcomes the shortcomings of the prior art and proposes a prefabricated assembled transformer substation foundation structure; it solves the problems of long construction period and large amount of construction waste generated by existing prefabricated assembled transformer substation foundations.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution.

[0006] A prefabricated prefabricated transformer substation foundation structure includes a base plate, with a first side plate on each of the left and right sides of the upper end of the base plate, and a second side plate on each of the front and rear sides of the upper end of the base plate. The two first side plates and the two second side plates together form a combined side plate with a square cylindrical structure. A square ring-shaped combined top plate is sleeved on the outer side of the upper end of the combined side plate. The base plate is connected to the first and second side plates by a locking seismic-resistant mechanism. The locking seismic-resistant mechanism includes positioning support blocks and positioning support grooves. Positioning support blocks are respectively provided at the four edges of the upper end face of the base plate, and positioning support grooves are respectively provided at the lower ends of the first and second side plates. The positioning support blocks on the base plate are respectively inserted into the positioning support grooves at the lower ends of the corresponding first and second side plates. A locking component is provided between the positioning support blocks and the positioning support grooves to realize the connection or disengagement between the positioning support blocks and the positioning support grooves.

[0007] Furthermore, the first side plate is a vertically arranged U-shaped plate structure, and the left and right ends of the second side plate are respectively connected to the same side end of the two first side plates; a mounting groove is provided on the upper outer side of the first side plate and the second side plate respectively, and the mounting grooves on the two first side plates and the two second side plates together form a square ring-shaped mounting groove, and the combined top plate is sleeved on the outside of the mounting groove.

[0008] Furthermore, the second side plate has a protruding limiting top block at the center of its connection with the first side plate; the first side plate has a recessed limiting groove at the center of its connection with the second side plate, and the limiting top block on the second side plate is engaged with the limiting groove on the first side plate; a reserved gap is provided at the connection between the first side plate and the second side plate.

[0009] Furthermore, a square fixing groove is provided on both the inner and outer sides of the reserved gap between the first side plate and the second side plate. A mating top block is fixedly installed in the middle of the inner wall of the fixing groove. The mating top block is divided into two halves, which are located on both sides of the reserved gap and fixed to the first side plate and the second side plate respectively. A pressing sealing gasket is provided inside each fixing groove. A vertical limiting protrusion is fixedly installed on the left and right ends of the end face of the pressing sealing gasket near the mating top block. The two limiting protrusions are located between the mating top block and the inner walls of the left and right sides of the fixing groove respectively.

[0010] Furthermore, multiple fastening bolts are inserted into each compression sealing gasket. These fastening bolts are arranged vertically and are screwed into the reserved gap between the first side plate and the second side plate after passing through the compression sealing gasket.

[0011] Furthermore, the combined top plate includes two first top plates and two second top plates, wherein the two first top plates are respectively disposed on two first side plates, and the two second top plates are respectively disposed on two second side plates; a T-slot is provided at the connection between the first top plate and the second top plate, and the two T-slots form an I-shaped groove; a connecting block with the same I-shaped structure is placed inside the T-slot that mates with the first top plate and the second top plate.

[0012] Furthermore, the locking assembly includes a mating pin; a vertical insertion hole is provided on the upper end face of the positioning support block, and a vertical mating pin is fixedly provided on the top surface inside the positioning support groove, the mating pin being inserted into the insertion hole; the lower half of the mating pin is a first semi-cylindrical structure, and a protruding mating block is provided at the lower end of the vertical plane of the first semi-cylindrical structure.

[0013] Furthermore, the locking assembly also includes a guide post, a connecting plate, a threaded rod, and an adjusting knob; a connected mounting groove and an operating groove are provided inside the positioning support block, wherein the mounting groove is located below the insertion hole and is connected to the insertion hole, and the operating groove is located on one side of the mounting groove; a first semi-cylindrical structure that cooperates with the insertion post extends into the mounting groove; a vertical guide post is fixedly provided at the bottom surface inside the operating groove, and a connecting plate is slidably sleeved on the outside of the guide post along the vertical direction, one end of the connecting plate extends into the mounting groove, and a vertical threaded rod is screwed to the other end of the connecting plate, the threaded rod is rotatably disposed inside the operating groove, and the upper end of the threaded rod extends to the outer side of the upper end of the bottom plate, and an adjusting knob is fixedly provided at the upper end of the threaded rod; a second abutting inclined surface is provided at the end of the connecting plate that extends into the mounting groove.

[0014] Furthermore, the locking assembly also includes an abutment post; an abutment post is provided inside the mounting groove, the upper half of the abutment post is a second semi-cylindrical structure, the second semi-cylindrical structure is located on the side of the mating block away from the first semi-cylindrical structure, and the lower end of the vertical plane of the second semi-cylindrical structure is provided with a concave mating groove, and the mating block can be disengaged and engaged inside the mating groove.

[0015] Furthermore, the locking assembly also includes a first spring telescopic post; a fourth abutting slope is provided at the lower end of the side of the abutting post away from the mating post, and the side of the fourth abutting slope near the mating post gradually slopes downward; the fourth abutting slope maintains sliding contact with the second abutting slope; a first spring telescopic post is provided at the lower end of the side of the abutting post away from the connecting plate, and the two ends of the first spring telescopic post are fixedly connected to the abutting post and the inner wall of the mounting groove, respectively.

[0016] The beneficial effects of this invention compared to the prior art are as follows: 1. In this invention, through the cooperation of the locking anti-seismic mechanism and various components, the positioning support block and the positioning support groove are precisely connected. With the double locking of the insertion column and the abutment insertion column, and the buffering and vibration reduction of the protective abutment plate and the second spring telescopic column, a firm splicing of the base plate with the first side plate and the second side plate can be achieved, effectively improving the seismic performance of the foundation and preventing the side plates from loosening and collapsing, thereby achieving the functions of stable splicing and seismic resistance and anti-collapse. Furthermore, through the cooperation of the sealing structure and the joint structure, the sealing strip and the sealing gasket are pressed to seal each splicing gap, and the fastening bolts and connecting blocks are used for reinforcement, which can effectively prevent rainwater and dust from seeping in, avoid corrosion of components and transformer equipment, and thus achieve the functions of all-round waterproofing and dustproofing and extending service life.

[0017] 2. In this invention, through the combination of prefabricated modular structure and locking components, the base plate, combined side plate, and combined top plate are all prefabricated components. Adjusting the knob drives the connecting plate and the abutment column to flexibly lock and unlock, eliminating the need for complex on-site pouring and significantly shortening the construction cycle. At the same time, the reserved gaps accommodate thermal expansion and contraction, flexibly adapting to different installation scenarios, thus enabling rapid splicing and flexible adaptation. Furthermore, through the integration of functional structures, the reserved through holes facilitate line layout and maintenance, the louvers achieve ventilation and heat dissipation, and the grounding holes ensure safety, balancing practicality and safety, thus achieving functional integration and convenient operation and maintenance. Ultimately, this solves the problems of long construction cycles and large amounts of construction waste generated by existing prefabricated assembled transformer substation foundations. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the first side plate and the second side plate of the present invention in the spliced ​​state; Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle; Figure 4 This is a three-dimensional structural diagram of the first top plate of the present invention; Figure 5 This is a three-dimensional structural diagram of the base plate of the present invention; Figure 6 This is a three-dimensional structural diagram showing the positional relationship of the mating inserts in this invention; Figure 7 This is a three-dimensional structural diagram of the locking component of the present invention; Figure 8 This is a three-dimensional structural diagram of the locking assembly of the present invention after removing the mating insert.

[0019] Among them, 1 is the first side plate, 2 is the second side plate, 3 is the bottom plate, 4 is the first top plate, 5 is the second top plate, 6 is the pressing sealing gasket, 7 is the fastening bolt, 8 is the louver, 9 is the reserved through hole, 10 is the limiting protrusion, 11 is the mating top block, 12 is the reserved gap, 13 is the limiting top block, 14 is the observation connecting plate, 15 is the connecting block, 16 is the grounding hole, 17 is the positioning support block, 18 is the insertion hole, 19 is the pressing sealing strip, 20 is the adjustment knob, 21 is the pressing sealing groove, 22 is the positioning support groove, 23 is the mating insertion post, 24 is the abutment insertion post, 25 is the threaded rod, 26 is the connecting plate, 27 is the first spring telescopic post, 28 is the protective abutment plate, 29 is the second spring telescopic post, and 30 is the guide post. Detailed Implementation

[0020] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solutions of this invention are described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0021] like Figure 1 As shown in Figure 8, this invention provides a prefabricated assembled transformer substation foundation structure, including a base plate 3. A first side plate 1 is respectively provided on the left and right sides of the upper end of the base plate 3, and a second side plate 2 is respectively provided on the front and rear sides of the upper end of the base plate 3. The two first side plates 1 and the two second side plates 2 together form a combined side plate with a square cylindrical structure. A square ring-shaped combined top plate is sleeved on the outer side of the upper end of the combined side plate. The base plate 3 is connected to the first side plate 1 and the second side plate 2 by a locking seismic-resistant mechanism. The locking seismic-resistant mechanism enhances the connection stability between the base plate 3 and the first side plate 1 and the second side plate 2, improving the foundation's stability. To improve the overall seismic performance of the foundation, the locking seismic mechanism includes positioning support blocks 17 and positioning support grooves 22. Positioning support blocks 17 are respectively provided at the four edges of the upper surface of the base plate 3, and positioning support grooves 22 are respectively provided at the lower ends of the first side plate 1 and the second side plate 2. The positioning support blocks 17 on the base plate 3 are respectively inserted into the positioning support grooves 22 at the lower ends of the corresponding first side plate 1 and the second side plate 2. A locking component is provided between the positioning support blocks 17 and the positioning support grooves 22 to achieve the connection or disconnection between the positioning support blocks 17 and the positioning support grooves 22.

[0022] The base plate 3 is a horizontally arranged square plate structure. A grounding hole 16 is provided at the center of the base plate 3 to ensure the grounding safety of the transformer substation.

[0023] The first side panel 1 is a vertically arranged U-shaped plate structure. The two first side panels 1 are symmetrical from left to right, and the U-shaped openings of the two first side panels 1 face each other. The second side panel 2 is a square plate structure located in a vertical plane in the left-right direction. The left and right ends of the front second side panel 2 are connected to the front ends of the two first side panels 1, respectively, and the left and right ends of the rear second side panel 2 are connected to the rear ends of the two first side panels 1, respectively. The height between the first side panels 1 and the second side panels 2 is equal. Multiple reserved through holes 9 are provided in the middle area of ​​both first side panels 1 to facilitate the layout and maintenance of the transformer substation lines. Louvers 8 are provided on both second side panels 2 to achieve ventilation and heat dissipation inside the foundation and prevent internal moisture from damaging the equipment.

[0024] An installation slot is provided on the upper outer side of the first side plate 1 and the second side plate 2 respectively. The installation slots on the two first side plates 1 and the two second side plates 2 together form a square ring-shaped installation slot. The square ring-shaped combined top plate is sleeved on the outside of the installation slot, and the bottom surface of the combined top plate is in contact with the bottom surface of the installation slot.

[0025] The second side plate 2 has a protruding limiting block 13 at the middle of the connection with the first side plate 1. The horizontal cross-section of the limiting block 13 is an isosceles trapezoidal structure. The distance between the limiting block 13 and the inner and outer sides of the second side plate 2 is equal. The width of the end of the limiting block 13 away from the second side plate 2 is less than the width of the end of the limiting block 13 close to the second side plate 2.

[0026] The first side plate 1 has a recessed limiting groove in the middle of its connection with the second side plate 2. The horizontal cross-section of the limiting groove is an isosceles trapezoid. The limiting top block 13 on the second side plate 2 is engaged with the limiting groove on the first side plate 1.

[0027] The cooperation between the limiting top block 13 and the limiting slot enables precise docking and positioning of the first side plate 1 and the second side plate 2, avoiding misalignment during splicing.

[0028] A pre-reserved gap 12 is provided at the connection between the first side plate 1 and the second side plate 2. The pre-reserved gap 12 includes the gap between the end face of the first side plate 1 and the end face of the second side plate 2, and the gap between the limiting top block 13 and the limiting groove. The pre-reserved gap 12 can accommodate the thermal expansion and contraction of the components due to temperature changes, preventing stress deformation of the first side plate 1 and the second side plate 2 due to thermal expansion and contraction. At the same time, it facilitates subsequent sealing treatment and improves the stability and durability of the assembled side plates. The interior of the pre-reserved gap 12 can be filled with elastic sealant for sealing.

[0029] A square fixing groove is provided on both the inner and outer sides of the reserved gap 12 between the first side plate 1 and the second side plate 2. A vertical mating block 11 is fixedly installed in the middle of the inner wall of the fixing groove near the interior of the combined side plate. The mating block 11 is divided into two halves, which are located on both sides of the reserved gap 12 and fixed to the first side plate 1 and the second side plate 2 respectively. A vertical pressing sealing gasket 6 is provided in each fixing groove. The outer side of the pressing sealing gasket 6 in the inner fixing groove is flush with the inner side of the first side plate 1 and the second side plate 2, and the outer side of the pressing sealing gasket 6 in the outer fixing groove is flush with the outer side of the first side plate 1 and the second side plate 2. The inner side of the pressing sealing gasket 6 is in contact with the mating block 11, and the mating block 11 provides positioning and support for the pressing sealing gasket 6. A vertical limiting protrusion 10 is fixedly installed at both ends of the end face of the compression sealing gasket 6 near the mating top block 11. The two limiting protrusions 10 are located between the mating top block 11 and the inner walls of the left and right sides of the fixing groove, respectively. The two limiting protrusions 10 prevent the compression sealing gasket 6 from shifting and ensure the sealing effect. The compression sealing gasket 6 effectively seals the reserved gap 12 between the first side plate 1 and the second side plate 2, improving the waterproof sealing performance.

[0030] Multiple fastening bolts 7 are inserted into each compression sealing gasket 6. The multiple fastening bolts 7 are arranged in a vertical direction. After passing through the compression sealing gasket 6, the fastening bolts 7 are screwed into the reserved gap 12 between the first side plate 1 and the second side plate 2. That is, half of the threaded hole that mates with the fastening bolt 7 is located on the first side plate 1 and the other half is located on the second side plate 2.

[0031] The two limiting protrusions 10 on the compression sealing gasket 6 can limit the connection between the first side plate 1 and the second side plate 2 in the left and right directions. The fastening bolts 7 can fix the compression sealing gasket 6 to the first side plate 1 and the second side plate 2 in the front and back directions, thereby firmly connecting the first side plate 1 and the second side plate 2.

[0032] The combined top plate includes two first top plates 4 and two second top plates 5, wherein the two first top plates 4 are respectively disposed on two first side plates 1, and the two second top plates 5 are respectively disposed on two second side plates 2. The first top plates 4 have a U-shaped structure, and the two first top plates 4 are symmetrically arranged, with their U-shaped openings facing each other. The second top plates 5 extend laterally. The left and right ends of the front second top plate 5 are connected to the front ends of the two first top plates 4, respectively, and the left and right ends of the rear second top plate 5 are connected to the rear ends of the two first top plates 4, respectively.

[0033] A T-slot is provided at the connection between the first roof plate 4 and the second roof plate 5, and the two T-slots form an I-shaped groove. A connecting block 15 with the same I-shaped structure is placed inside the T-slot where the first roof plate 4 and the second roof plate 5 meet. The connecting block 15 securely connects the first roof plate 4 and the second roof plate 5, thus assembling them into a complete composite roof plate. This enhances the overall integrity of the composite roof plate, while sealing the joint gaps to prevent rainwater and dust from entering. The I-shaped structure distributes the stress evenly, effectively distributing the stress on the composite roof plate, preventing cracking at the joints, and improving the load-bearing capacity and sealing performance of the composite roof plate.

[0034] After the connecting block 15 is snapped in place, a ring of observation connecting plate 14 is poured between the inner wall of the combined top plate and the inner wall of the main groove. This fills the gap between the combined top plate and the combined side plate, enhances the connection strength and integrity between the combined top plate and the combined side plate, facilitates on-site inspection of splicing quality, improves the overall stability and sealing performance of the foundation, meets the precision requirements of on-site installation, and further enhances the foundation's seismic resistance and waterproofing capabilities.

[0035] The base plate, combined side plates, and combined top plate constitute a prefabricated assembled main body, which can be quickly assembled and installed, greatly shortening the construction cycle.

[0036] The positioning support block 17 is a cuboid structure, and the positioning support groove 22 is a square groove. The positioning support block 17 is inserted upward into the positioning support groove 22, and the positioning support block 17 and the positioning support groove 22 are precisely matched to achieve rapid positioning and docking of the base plate 3 with the first side plate 1 and the second side plate 2, reducing splicing deviation, thereby improving the installation stability of the first side plate 1 and the second side plate 2, and increasing the support strength of the installation to prevent the first side plate 1 and the second side plate 2 from collapsing. A compression sealing strip 19 is fixedly installed at the outer edge of the upper end face of the base plate 3, and a compression sealing groove 21 is provided at the lower end of the first side plate 1 and the second side plate 2. The compression sealing strip 19 on the base plate 3 and the compression sealing groove 21 at the lower end of the first side plate 1 and the second side plate 2 are in a compression fit, which can effectively seal the gap between the positioning support block 17 and the positioning support groove 22, prevent rainwater, dust and other impurities from entering the foundation, avoid corrosion of the transformer equipment and foundation components, and enhance the waterproof sealing performance of the foundation, extending the service life of the equipment and the foundation.

[0037] The locking assembly includes an adjustment knob 20, a mating post 23, an abutting post 24, a threaded rod 25, a connecting plate 26, a first spring telescopic post 27, a protective abutting plate 28, a second spring telescopic post 29, and a guide post 30.

[0038] A vertical insertion hole 18 is provided on the upper end face of the positioning support block 17, and a vertical mating post 23 is fixedly provided on the top surface inside the positioning support groove 22. The mating post 23 is inserted into the insertion hole 18 to achieve double locking and fixation, preventing loosening after splicing, further improving the firmness and seismic resistance of the foundation splicing, while simplifying the splicing process and improving installation efficiency. The lower half of the mating post 23 is a first semi-cylindrical structure. The lower end of the vertical plane of the first semi-cylindrical structure is provided with an outwardly protruding mating block. The lower end face of the mating block is provided with a first abutting slope, which slopes downward as it gradually approaches the axis of the mating post 23.

[0039] An interconnected mounting groove and a function groove are provided inside the positioning support block 17. The mounting groove is located below and connected to the insertion hole 18, while the function groove is located on one side of the mounting groove. The first semi-cylindrical structure of the insert post 23 extends into the mounting groove. A vertical guide post 30 is fixedly installed on the bottom surface inside the function groove. A connecting plate 26 is slidably sleeved on the outside of the guide post 30 along the vertical direction. One end of the connecting plate 26 extends into the mounting groove, and the other end of the connecting plate 26 is screwed with a vertical threaded rod 25. The threaded rod 25 is rotatably installed inside the function groove, and its upper end extends to the outer side of the upper end of the base plate 3. An adjustment knob 20 is fixedly installed on the upper end of the threaded rod 25. By rotating the adjustment knob 20, the threaded rod 25 can be rotated. Since the threaded rod 25 is screwed to the connecting plate 26, the connecting plate 26 is stably raised and lowered under the guidance of the guide post 30. The guide post 30 ensures that the connecting plate 26 slides smoothly and avoids deviation. The end of the connecting plate 26 that extends into the mounting groove is provided with a second abutting slope, and the end of the second abutting slope away from the threaded rod 25 gradually slopes downward.

[0040] An abutment post 24 is provided inside the mounting groove. The upper half of the abutment post 24 is a second semi-cylindrical structure, located on the side of the mating block away from the first semi-cylindrical structure, and positioned between the first semi-cylindrical structure and the threaded rod 25. The vertical plane of the second semi-cylindrical structure is parallel to the vertical plane of the first semi-cylindrical structure. A concave mating groove is provided at the lower end of the vertical plane of the second semi-cylindrical structure, and a third abutment slope is provided on the inner bottom surface of the mating groove, allowing the mating block to be disengaged and engaged inside the mating groove.

[0041] A fourth abutting slope is provided at the lower end of the abutting post 24 on the side away from the mating post 23. The fourth abutting slope gradually slopes downward on the side closer to the mating post 23. The fourth abutting slope maintains sliding contact with the second abutting slope. A first spring telescopic post 27 is provided at the lower end of the abutting post 24 on the side away from the connecting plate 26. The telescopic direction of the first spring telescopic post 27 is perpendicular to the vertical plane of the second semi-cylindrical structure. The two ends of the first spring telescopic post 27 are fixedly connected to the abutting post 24 and the inner wall of the mounting groove, respectively.

[0042] A recessed telescopic groove is provided on the top surface inside the mating groove of the abutting post 24. Two vertical second spring telescopic posts 29 are fixedly installed on the top surface inside the telescopic groove. The telescopic ends of the two second spring telescopic posts 29 extend to the outside of the lower opening of the telescopic groove. A protective abutting plate 28 of the same level is fixedly installed on the telescopic ends of the two second spring telescopic posts 29.

[0043] When the positioning support block 17 and the positioning support groove 22 are not engaged, the mating pin 23 is not inserted into the insertion hole 18. At this time, the connecting plate 26 is located on the lower side inside the working groove. Under the rebound force of the first spring telescopic pin 27, the abutting pin 24 is located on the side close to the threaded rod 25. At this time, the second abutting inclined surface and the fourth abutting inclined surface maintain sliding contact. Under the rebound force of the second spring telescopic pin 29, the protective abutting plate 28 disengages from the inner top surface of the mating groove.

[0044] After the positioning support block 17 is inserted into the positioning support groove 22, the mating pin 23 is inserted downward into the insertion hole 18, and the first semi-cylindrical structure at the lower end of the mating pin 23 is inserted downward into the mounting groove. At this time, the mating block on the mating pin 23 and the mating groove on the abutting pin 24 are misaligned. Then, the adjustment knob 20 is rotated, which drives the threaded rod 25 to rotate. Since the threaded rod 25 is screwed to the connecting plate 26, the connecting plate 26 is driven to rise steadily under the guidance of the guide post 30. Since the second abutting slope on the connecting plate 26 and the fourth abutting slope on the abutting pin 24 maintain sliding contact, as the connecting plate 26 gradually rises, the second abutting slope on the connecting plate 26 applies a compressive force to the fourth abutting slope on the abutting pin 24, causing the abutting pin 24 to move away from the threaded rod 25, and the first spring telescopic post 27 is gradually compressed. As the abutment pin 24 gradually moves away from the threaded rod 25, it gradually approaches and mates with the mating pin 23. The mating groove on the abutment pin 24 and the mating block on the mating pin 23 gradually engage with each other until the first abutting slope on the mating pin 23 contacts the third abutting slope on the abutment pin 24. The damping and shock-resistant rubber protective abutment plate 28 can buffer the impact force when the abutment pin 24 and the mating pin 23 mate, avoiding damage to the components caused by hard collisions. The second spring telescopic pin 29 further enhances the buffering effect and can accommodate slight splicing deviations, achieving flexible abutment, reducing vibration transmission during earthquakes, and improving the seismic performance and service life of the locking mechanism. Since the mating groove on the abutting post 24 and the mating block on the mating post 23 are interlocked, the mating post 23 cannot be pulled out of the insertion hole 18 under the limiting action of the abutting post 24, thus realizing the locking and fixing of the positioning support block 17 and the positioning support groove 22, and thus realizing the firm connection between the base plate 3 and the first side plate 1 and the second side plate 2, which is convenient to operate and has a firm locking.

[0045] When it is necessary to disengage the positioning support block 17 from the positioning support groove 22, the adjustment knob 20 is rotated in the opposite direction, causing the connecting plate 26 to begin to descend. Under the rebound force of the first spring telescopic column 27, the abutting pin 24 gradually moves towards the side closer to the threaded rod 25. During this process, the abutting pin 24 gradually moves away from the mating pin 23, and the mating groove on the abutting pin 24 and the mating block on the mating pin 23 gradually disengage from each other until the mating block on the mating pin 23 and the mating groove on the abutting pin 24 are misaligned again. At this time, the abutting pin 24 no longer limits the mating pin 23, so the mating pin 23 can be smoothly pulled out of the insertion hole 18, thereby realizing the disengagement of the positioning support block 17 from the positioning support groove 22, and thus the bottom plate 3 can be separated from the first side plate 1 and the second side plate 2.

[0046] The first spring telescopic column 27 provides elastic support and guidance for the sliding of the abutment column 24, ensuring smooth and stable sliding of the abutment column 24 and preventing jamming. Simultaneously, it can automatically reset the abutment column 24 during unlocking, simplifying the unlocking operation. The abutment column 24 maintains sliding contact with the inner wall of the mounting groove, thereby limiting the movement of the abutment column 24 and preventing it from shifting during sliding, ensuring the stable operation of the locking assembly.

[0047] This invention also proposes a method for using a prefabricated prefabricated transformer substation foundation structure, comprising the following steps: Step 1: First, the various component panels are prefabricated in the factory. Before construction, the foundation positioning and component inspection must be completed. First, the construction site is cleaned, and the base plate 3 is placed stably in the target position. The grounding device is installed using the grounding hole 16 in the middle of the base plate 3 to ensure the safety of the transformer substation in the future. Check the integrity of all prefabricated components, such as the first side plate 1, the second side plate 2, the first top plate 4, and the second top plate 5, and confirm that the locking anti-seismic mechanism and sealing components are undamaged. At the same time, clean the pressing sealing strip 19 on the base plate 3 and the pressing sealing gasket 6 on the top block 11 to ensure the sealing effect. Then, according to the construction requirements, the wiring layout direction of the reserved through hole 9 on the side wall of the first side plate 1 is planned in advance, and the opening and closing flexibility of the louvers 8 on the second side plate 2 is checked to prepare for subsequent ventilation and heat dissipation and wiring installation.

[0048] Step two: Hoist the first side plate 1 to the corresponding position on the base plate 3, so that the positioning support block 17 on the base plate 3 is precisely embedded into the positioning support groove 22 at the bottom of the first side plate 1. At this time, the insert post 23 is inserted into the insertion hole 18, and the pressing sealing strip 19 on the base plate 3 is initially attached to the pressing sealing groove 21, completing the initial positioning of the first side plate 1; simultaneously hoist the second side plate 2, insert the limiting top block 13 at its end into the limiting slot of the first side plate 1, and leave a gap 12 to allow for thermal expansion and contraction space to prevent subsequent component deformation; after positioning, rotate the adjusting knob 20 on the base plate 3 to drive the threaded rod 25 at its lower end to rotate. 5. Drive the connecting plate 26 to rise smoothly along the guide post 30. The side end of the connecting plate 26 pushes the abutment post 24 to slide along the mounting groove of the positioning support block 17, so that the abutment post 24 gradually approaches the mating post 23. The first spring telescopic post 27 provides guidance and elastic support for the sliding of the abutment post 24, and finally makes the mating groove on the abutment post 24 and the mating block on the mating post 23 fit together. The protective abutment plate 28 on the abutment post 24 and the second spring telescopic post 29 buffer the impact of the docking, adapt to slight splicing deviation, realize double locking, prevent the side plate from loosening and collapsing, improve seismic performance, and repeat the operation to complete the splicing and locking of all side plates.

[0049] Step 3: At the joint between the first side plate 1 and the second side plate 2, the top block 11 provides positioning and support for the sealing gasket 6. The limiting protrusions 10 at both ends prevent the sealing gasket 6 from shifting. Then, the sealing gasket 6 is tightened by the spaced fastening bolts 7 to completely seal the gap between the side plate joints and prevent rainwater from seeping in. At the positioning support block 17 and the positioning support groove 22, the sealing strip 19 and the sealing groove 21 are further pressed and fitted to seal the gap and prevent dust and impurities from entering the foundation and corroding the components. At the same time, check the locking status of the locking components. If there is any deviation, the adjustment knob 20 can be turned again for fine adjustment to ensure that the abutment post 24 and the mating post 23 are firmly engaged and that the first spring telescopic post 27 and the second spring telescopic post 29 are in normal telescopic state. In addition, confirm that the louvers 8 of the second side plate 2 are not obstructed to ensure ventilation and heat dissipation inside the foundation. Clean the reserved through holes 9 to prepare for the wiring layout.

[0050] Step four: After sealing and reinforcement are completed, the combined roof slab is installed and overall adjusted to achieve complete splicing of the foundation structure. First, the two first roof slabs 4 are hoisted onto the top of the first side panel 1 and the second side panel 2. After adjusting their positions, the second roof slab 5 is installed between the two first roof slabs 4, ensuring precise contact between the combined roof slab and the top of the combined side panel. At the joint of the combined roof slab, the I-beam connecting block 15 is inserted into the T-slot between the first roof slab 4 and the second roof slab 5 to achieve a firm connection and enhance the overall integrity of the combined roof slab. Subsequently, the connecting block 15 is reinforced by cement pouring to further improve the load-bearing capacity of the roof slab. The system assesses the strength and sealing performance; next, it pours the observation connection plate 14 on-site to fill the gap between the combined top plate and the combined side plate, enhancing the overall connection strength and facilitating on-site inspection of the splicing quality; finally, it conducts overall commissioning, checks the operating status of all locking components and sealing parts to confirm that there is no loosening or leakage, adjusts the opening and closing flexibility of the louvers 8, checks the grounding reliability of the grounding hole 16, cleans impurities inside the foundation, and completes the installation of the entire prefabricated prefabricated transformer substation foundation; the entire process achieves modular rapid splicing, taking into account seismic resistance, waterproofing, ventilation and other functions, significantly shortening the construction cycle and ensuring the long-term stable operation of the transformer substation equipment.

[0051] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A prefabricated assembled transformer substation foundation structure, characterized in that: The system includes a base plate (3), with a first side plate (1) on the left and right sides of the upper end of the base plate (3) and a second side plate (2) on the front and rear sides of the upper end of the base plate (3). The two first side plates (1) and the two second side plates (2) together form a combined side plate with a square cylindrical structure. A square ring-shaped combined top plate is sleeved on the outer side of the upper end of the combined side plate. The base plate (3) is connected to the first side plate (1) and the second side plate (2) by a locking anti-seismic mechanism. The locking anti-seismic mechanism includes a positioning support block (17) and a positioning support groove (22). Positioning support blocks (17) are provided at the four edges of the upper surface of the plate (3). Positioning support grooves (22) are provided at the lower ends of the first side plate (1) and the second side plate (2). The positioning support blocks (17) on the bottom plate (3) are respectively inserted into the positioning support grooves (22) at the lower ends of the corresponding first side plate (1) and second side plate (2). A locking component is provided between the positioning support block (17) and the positioning support groove (22). The connection or disconnection between the positioning support block (17) and the positioning support groove (22) is realized by the locking component.

2. The prefabricated assembled transformer substation foundation structure according to claim 1, characterized in that: The first side plate (1) is a vertically arranged U-shaped plate structure. The left and right ends of the second side plate (2) are respectively connected to the same side end of the two first side plates (1). A placement groove is provided on the upper outer side of the first side plate (1) and the second side plate (2). The placement grooves on the two first side plates (1) and the two second side plates (2) together form a square ring-shaped placement groove. The combined top plate is sleeved on the outside of the placement groove.

3. The prefabricated assembled transformer substation foundation structure according to claim 1, characterized in that: The second side plate (2) has a protruding limiting top block (13) at the middle of the connection with the first side plate (1); the first side plate (1) has a concave limiting groove at the middle of the connection with the second side plate (2), and the limiting top block (13) on the second side plate (2) is engaged with the limiting groove on the first side plate (1); a reserved gap (12) is provided at the connection between the first side plate (1) and the second side plate (2).

4. The prefabricated assembled transformer substation foundation structure according to claim 3, characterized in that: A square fixing groove is provided on both the inner and outer sides of the reserved gap (12) between the first side plate (1) and the second side plate (2). A mating top block (11) is fixedly provided in the middle of the inner wall of the fixing groove. The mating top block (11) is divided into two halves. The two halves of the mating top block (11) are located on both sides of the reserved gap (12) and are respectively fixed on the first side plate (1) and the second side plate (2). A pressing sealing gasket (6) is provided in each fixing groove. A vertical limiting protrusion (10) is fixedly provided on the left and right ends of the end face of the pressing sealing gasket (6) near the mating top block (11). The two limiting protrusions (10) are located between the mating top block (11) and the inner walls of the left and right sides of the fixing groove.

5. The prefabricated assembled transformer substation foundation structure according to claim 4, characterized in that: Multiple fastening bolts (7) are inserted into each compression sealing gasket (6). The multiple fastening bolts (7) are arranged in a vertical direction. After passing through the compression sealing gasket (6), the fastening bolts (7) are screwed into the reserved gap (12) between the first side plate (1) and the second side plate (2).

6. The prefabricated assembled transformer substation foundation structure according to claim 1, characterized in that: The combined top plate includes two first top plates (4) and two second top plates (5), wherein the two first top plates (4) are respectively disposed on two first side plates (1), and the two second top plates (5) are respectively disposed on two second side plates (2); a T-shaped groove is respectively disposed at the connection between the first top plate (4) and the second top plate (5), and the two T-shaped grooves form an I-shaped groove; a connecting block (15) with the same I-shaped structure is placed inside the T-shaped groove that mates with the first top plate (4) and the second top plate (5).

7. The prefabricated assembled transformer substation foundation structure according to claim 1, characterized in that: The locking assembly includes a mating pin (23); a vertical insertion hole (18) is provided on the upper end face of the positioning support block (17), and a vertical mating pin (23) is fixedly provided on the top surface inside the positioning support groove (22), and the mating pin (23) is inserted into the insertion hole (18); the lower half of the mating pin (23) is a first semi-cylindrical structure, and a protruding mating block is provided at the lower end of the vertical plane of the first semi-cylindrical structure.

8. The prefabricated assembled transformer substation foundation structure according to claim 7, characterized in that: The locking assembly also includes a guide post (30), a connecting plate (26), a threaded rod (25), and an adjusting knob (20); a mounting groove and an operating groove are provided inside the positioning support block (17), wherein the mounting groove is located below the insertion hole (18) and is connected to the insertion hole (18), and the operating groove is located on one side of the mounting groove; the first semi-cylindrical structure of the insert post (23) extends into the mounting groove; a vertical guide post (30) is fixedly provided at the bottom surface inside the operating groove, and the guide post (30) is fixedly provided at the bottom surface inside the operating groove. A connecting plate (26) is slidably sleeved on the outside of the column (30) along the vertical direction. One end of the connecting plate (26) extends into the mounting groove, and the other end of the connecting plate (26) is screwed with a vertical threaded rod (25). The threaded rod (25) is rotatably set inside the working groove. The upper end of the threaded rod (25) extends to the outside of the upper end of the base plate (3). An adjustment knob (20) is fixedly set at the upper end of the threaded rod (25). A second abutting slope is set at the end of the connecting plate (26) that extends into the mounting groove.

9. A prefabricated prefabricated transformer substation foundation structure according to claim 8, characterized in that: The locking assembly also includes an abutment post (24); an abutment post (24) is provided inside the mounting groove, the upper half of the abutment post (24) is a second semi-cylindrical structure, the second semi-cylindrical structure is located on the side of the mating block away from the first semi-cylindrical structure, and the lower end of the vertical plane of the second semi-cylindrical structure is provided with a concave mating groove, and the mating block can be disengaged and locked inside the mating groove.

10. A prefabricated prefabricated transformer substation foundation structure according to claim 9, characterized in that: The locking assembly also includes a first spring telescopic post (27); a fourth abutting slope is provided at the lower end of the side of the abutting post (24) away from the mating post (23), and the side of the fourth abutting slope close to the mating post (23) gradually slopes downward; the fourth abutting slope maintains sliding contact with the second abutting slope; a first spring telescopic post (27) is provided at the lower end of the side of the abutting post (24) away from the connecting plate (26), and the two ends of the first spring telescopic post (27) are fixedly connected to the abutting post (24) and the inner wall of the mounting groove, respectively.

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