A prepackaged shockproof box-type substation

Abstract

The application discloses a prepackaged shockproof box-type transformer substation, and relates to the technical field of transformer substations, comprising a transformer box and a base, wherein shockproof mechanisms are arranged on the two sides of the base, the shockproof mechanisms are connected with the side edges of the base through mounting plates, the shockproof mechanisms are self-adaptive hydraulic shockproof mechanisms, and each shockproof mechanism comprises a piston cylinder, a buffer rod, a trigger assembly and an adjusting assembly; the piston cylinder is filled with hydraulic oil and is provided with a piston disc for separating the inner cavity of the piston cylinder into an upper chamber and a lower chamber, the upper end of the buffer rod is connected with the piston disc, the lower end of the buffer rod extends out of the piston cylinder and is provided with a contact block. The application improves the problems in the prior art, such as the fixed damping characteristics of traditional spring shock absorbers, the inability of the traditional spring shock absorbers to adaptively adjust to adapt to variable falling speeds and box weights, and the mismatch between the buffering effect and impact working conditions. The application has the advantages that the multiple-stage buffering and automatic adjusting mechanism can effectively dissipate impact energy of different intensities, and the safety of electrical elements in the box-type transformer substation during installation and operation is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transformer substations, and in particular to a pre-assembled shockproof box-type transformer substation. BACKGROUND

[0002] A pre-assembled transformer substation (also known as a box-type transformer substation) is a factory-preassembled complete power distribution device that integrates high-voltage switchgear, distribution transformers, and low-voltage distribution devices according to a certain wiring scheme. It has the characteristics of compact structure, small footprint, convenient installation, and low maintenance cost, and is widely used in urban power grids, industrial parks, residential areas, and new energy access sites. Due to its deployment in outdoor or complex environments, during installation, especially when hoisting and falling into place, impact vibrations may occur between the box and the foundation due to rigid contact. This transient impact force may be transmitted to the internal precision electrical components, causing insulation damage, connection loosening, or structural damage. Therefore, a buffer damping mechanism must be installed at the bottom or key load-bearing points to absorb and dissipate impact energy, ensuring the safe placement of the device and improving long-term operational reliability.

[0003] In the prior art, pre-assembled transformer substation installation buffers often use spring dampers, such as a shockproof box-type transformer substation with application number 202321610772.8, which uses spring elastic deformation to absorb impact energy. However, such devices often have inherent limitations; for example, their buffering performance depends on the pre-set stiffness of the spring, and the damping characteristics are fixed and cannot be adaptively adjusted according to the real-time speed during hoisting and falling of the transformer substation and the actual weight of the box. In actual working conditions, the falling speed is affected by multiple factors such as operator control accuracy, crane performance, and site environment, and may fluctuate. The weights of different models of transformer substations also differ. If the impact force is large but the spring stiffness is insufficient, it may result in excessive buffering travel and insufficient damping effect, causing the box to bear excessive peak stress. Conversely, if the impact force is small but the spring stiffness is too large, the buffer response is sluggish and cannot effectively absorb low-intensity vibrations, and may even form a nearly rigid connection, losing the buffering significance. This mismatch between constant buffering force and variable impact conditions reduces installation safety and may exacerbate potential damage risks to the equipment.

[0004] To address the above technical problems, the present application discloses a pre-assembled shockproof box-type transformer substation. SUMMARY

[0005] The present application aims to overcome the deficiencies of the prior art, and provides a pre-installed shockproof box-type transformer substation, so as to solve the technical problems in the prior art that the damping characteristics of the traditional spring shock absorber are fixed, and the shock absorber cannot be self-adaptively adjusted to adapt to the variable falling speed and the weight of the box body, resulting in mismatching of the buffering effect and the impact working condition and the like, and the present application has the advantages that the impact energy of different intensities can be effectively dissipated through the multi-stage buffering and automatic adjustment mechanism, and the safety of the precise electrical elements in the box-type transformer substation during installation and operation is finally ensured.

[0006] The present application is achieved by the following technical scheme: the present application discloses a pre-installed shockproof box-type transformer substation, which comprises a transformer box and a base, and a damping mechanism is arranged on both sides of the base, the damping mechanism is connected with the side edges of the base through a mounting plate, and the damping mechanism is a self-adaptive hydraulic damping mechanism, which comprises a piston cylinder, a buffer rod, a trigger assembly and an adjusting assembly.

[0007] The piston cylinder is filled with hydraulic oil and is provided with a piston disc for separating the inner cavity into an upper chamber and a lower chamber, the upper end of the buffer rod is connected with the piston disc, and the lower end of the buffer rod extends out of the piston cylinder and is provided with a contact block;

[0008] The piston disc is provided with a flow channel for communicating the upper and lower chambers, the trigger assembly is arranged on the contact block and is used for sensing the impact speed;

[0009] The adjusting assembly is built in the buffer rod and is used for dynamically adjusting the flow area of the flow channel in response to the trigger assembly.

[0010] Further, the trigger assembly comprises a trigger rod and an elastic member, the trigger rod is movably inserted into the contact block, the lower end of the trigger rod extends out of the bottom of the contact block and is provided with a bottom disc, and the elastic member provides a restoring force for the trigger rod; and the adjusting assembly is used for converting the linear motion of the trigger rod into the control of the flow area of the flow channel.

[0011] Further, the adjusting assembly comprises an adjusting part, a movable part and a connecting part, the movable part comprises a compression cavity, a compression disc slidably arranged in the compression cavity and a compression spring for providing driving force;

[0012] The connecting part is used for locking the movable part when the trigger rod is not triggered, and is used for unlocking the movable part when the trigger rod is contracted under impact, so as to release the compression spring to drive the compression disc to move upward;

[0013] The adjusting part is driven by the compression disc, and is used for lifting or lowering an adjusting conical column arranged in the flow channel, so as to change the flow area of the flow channel.

[0014] Further, the connecting part comprises a rotating sleeve, a sliding rod, a guide groove and a guide rod mechanism; the guide groove is formed on the outer wall of the rotating sleeve, and the profile thereof is composed of an unlocking section, a straight section and a locking section in sequence; when the trigger rod is retracted to drive the guide rod to move along the unlocking section, the rotating sleeve is driven to rotate by a specific angle to realize unlocking; after the guide rod enters the straight section, the system remains in the unlocked state, and the compression disc can be uniformly moved upward; when the trigger rod moves to the end of the stroke, the guide rod enters the locking section, the rotating sleeve is reversely rotated to reset, and the system is relocked.

[0015] Further, the connecting part further comprises a positioning assembly comprising a positioning plug matched with the positioning teeth on the sliding rod; the rotating movement of the rotating sleeve controls the engagement and disengagement of the positioning plug and the positioning teeth through the transverse column and the guide ball, so that the locking and unlocking of the entire adjusting assembly are realized.

[0016] Further, an air outlet channel is formed at the top of the compression cavity of the movable part, the compression disc moves upward to compress the air above and make it slowly discharge through the channel, the generated pneumatic damping force ensures that the compression disc moves at a constant speed, thereby providing a gradual change in the flow area of the flow channel.

[0017] Further, the adjusting part comprises an adjusting rod, a connecting rod and an adjusting conical column; the taper angle of the adjusting conical column matches the taper angle of the flow channel, and the bottom end thereof is connected to the adjusting rod driven by the compression disc through the connecting rod.

[0018] Further, the flow channel has a plurality of flow channels arranged in a circular array along the center of the piston disc, and each flow channel is inserted with an adjusting conical column.

[0019] Further, the damping mechanism is detachably connected with the base, and after the substation is installed in place, the entire damping mechanism can be removed from the base.

[0020] The present application has the following advantages:

[0021] (1) The present application can adjust the damping performance in real time according to the impact force, and solve the problem of mismatch between the traditional fixed damping system and the variable working condition. The system can adjust the opening degree of the flow channel to the most matched state for this impact by sensing the impact strength through the trigger rod speed and using the hydraulic and mechanical linkage mechanism. It can ensure that the substation can provide enough support force to prevent structural damage when it is released, and it can also ensure that it can be soft and buffered to avoid rigid vibration when the impact is small. It can ensure the success rate of equipment installation and long-term operation stability.

[0022] (2) The present application is realized by mechanical structure, without relying on sensors, controllers or external power supply, so it has reliability and environmental adaptability, and is suitable for common outdoor complex working conditions of substations (such as construction sites, mines, etc.). At the same time, the modular design makes the damping mechanism convenient to detach from the base as a whole after installation, maintains the neatness of the installation foundation, and is convenient for subsequent transportation, storage or maintenance. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 For the present invention Figure 1 A magnified schematic diagram of the structure at point A;

[0025] Figure 3 This is a schematic diagram of the internal structure of the shock absorption mechanism of the present invention;

[0026] Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure at point E;

[0027] Figure 5 For the present invention Figure 3 A magnified schematic diagram of the structure at point C;

[0028] Figure 6 For the present invention Figure 3 A magnified schematic diagram of the structure at point D;

[0029] Figure 7 For the present invention Figure 4 A magnified schematic diagram of the structure at point F;

[0030] Figure 8 For the present invention Figure 6 A magnified schematic diagram of the structure at point G;

[0031] Figure 9 This is a schematic diagram of the planar structure of the rotating sleeve of the present invention;

[0032] Figure 10 For the present invention Figure 3 A magnified schematic diagram of the structure at point B.

[0033] In the diagram: 1. Transformer box; 2. Base; 3. Vibration damping mechanism; 4. Mounting plate; 5. Trigger assembly; 6. Adjustment assembly; 7. Air outlet channel; 8. Pressure plate; 9. Return spring; 10. Through groove; 301. Piston cylinder; 302. Piston disc; 303. Buffer rod; 304. Contact block; 305. Flow channel; 501. Trigger rod; 502. Elastic element; 503. Movable cavity; 504. Clearance hole; 505. Limiting ring; 506. Chassis; 601. Adjustment part; 602. Movable part; 603. Connecting part; 621. Compression cavity; 622. Compression 623. Disc; 624. Movable rod; 625. Relief cavity; 631. Compression spring; 632. Positioning assembly; 632. Unlocking assembly; 6321. Rotating sleeve; 6322. Slider; 6323. Slide rod; 6324. Guide groove; 6325. Guide rod; 3241. Unlocking section; 3242. Straight section; 3243. Locking section; 6311. Positioning tooth; 6312. Positioning insert; 6313. Lateral column; 6314. Guide ball; 6315. Guide ring; 6011. Adjusting rod; 6012. Connecting rod; 6013. Adjusting conical column. Detailed Implementation

[0034] The embodiments of the present invention are described in detail below. These embodiments are implemented based on the technical solution of the present invention, and provide detailed implementation methods and specific operation processes. However, the scope of protection of the present invention is not limited to the following embodiments. In the description of the present invention, words such as "front", "rear", "left", and "right" that indicate orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0035] This embodiment discloses a prefabricated anti-vibration box-type substation. To ensure that the internal precision electrical components are not damaged due to rigid collisions with the ground during hoisting and descent, the following measures are taken: Figures 1-10 As shown, it employs a specialized buffer design in its structure. For example... Figure 1 As shown, the substation mainly consists of a transformer box 1 and a base 2, with the transformer box 1 fixedly installed on top of the base 2. Notably, vibration damping mechanisms 3 are installed on both sides of the base 2. The core function of these vibration damping mechanisms 3 is to actively provide buffering during the process of the substation being hoisted by a crane and gradually lowered onto the installation foundation. Through the coordinated action of its internal mechanical components, it effectively absorbs and dissipates the impact kinetic energy generated during the descent, thereby reducing the vibration transmitted to the substation body and minimizing damage to internal components caused by severe vibration, ensuring the structural integrity and long-term operational reliability of the equipment.

[0036] It should be noted that the vibration damping mechanism 3 is connected to the side of the base 2 via a mounting plate 4. The mounting plate 4 is L-shaped, and the vertical part of the mounting plate 4 is fastened to the base 2 with bolts to ensure the stability of the installation. Furthermore, the detachable connection design allows the entire vibration damping mechanism 3 to be easily removed from the base 2 after the substation is in place, thus maintaining the cleanliness and integrity of the final installation interface.

[0037] Specifically, such as Figures 2-3 As shown, the shock absorption mechanism 3 mainly consists of a piston cylinder 301, a piston disc 302, a buffer rod 303, a contact block 304, and a flow channel 305. The piston cylinder 301 is vertically fixed below the horizontal portion of the mounting plate 4. Its internal chamber is equipped with a piston disc 302 that can slide longitudinally. A sealing ring is embedded on the outer edge of the piston disc 302 to ensure dynamic sealing within the piston cylinder 301. The upper end of the buffer rod 303 is fixedly connected to the center of the piston disc 302, and the lower end passes through the opening at the bottom of the piston cylinder 301 and extends to the outside. It is engaged with the bottom opening of the cylinder by a sliding seal, so that the inner cavity of the piston cylinder 301 forms two independent sealed chambers. The contact block 304 is installed at the bottom end of the buffer rod 303 that protrudes from the cylinder and is used to contact the ground. In the initial state, the upper chamber of the piston disc 302 is filled with incompressible liquid, and a flow channel 305 is opened longitudinally at the center of the piston disc 302 to connect the upper and lower chambers.

[0038] With the above configuration, during installation, when the substation descends, the contact block 304 contacts the ground first, immediately preventing the buffer rod 303 from continuing to descend. As the enclosure continues to descend, the piston cylinder 301 moves upward relative to the piston disc 302 under the weight of the enclosure, forcing the piston disc 302 to compress the liquid in the upper chamber. The only way for the pressurized liquid to escape from the chamber is through the flow channel 305, which must flow into the lower chamber. The liquid generates significant fluid resistance when flowing through the defined cross-section. This damping effect converts the kinetic energy of the falling enclosure into the internal energy of the liquid, thereby effectively suppressing the falling speed and buffering the impact load. By configuring the cross-sectional area of ​​the flow channel 305, the flow resistance of the liquid can be adjusted, thereby controlling the magnitude of the damping force generated by the system, ultimately ensuring that the substation is smoothly and controllably lowered into place, avoiding vibration damage to internal components due to rigid impact.

[0039] In actual installation process, the falling speed of the box-type substation is affected by multiple factors such as the control accuracy of the operator, the performance of the hoisting equipment and the site environmental conditions, and thus has certain fluctuations. Meanwhile, the self-weight of different types of substations also has significant differences. If the impact load is large and the spring stiffness of the damping mechanism 3 is insufficient, the buffer stroke may be excessive and the damping force may be insufficient, so that the box body bears a too high peak stress. Conversely, if the impact is small and the stiffness is too large, the buffer responds slowly and is difficult to effectively absorb low-intensity vibrations, and even forms an approximately rigid connection, losing the buffering function. This mismatch between the fixed damping characteristics and the actual variable impact conditions seriously reduces the safety of the installation process and increases the potential damage risk of the internal components of the equipment. Therefore, the damping mechanism 3 in the embodiment is designed as an adaptive damping system, which can dynamically adjust its damping performance according to the size of the impact force suffered by the substation during falling, so as to realize intelligent matching and protection under different working conditions.

[0040] Specifically, the damping mechanism 3 integrates an adaptive adjustment function, so that it can adjust the buffering performance in real time according to the impact intensity when the substation falls. The adaptive system mainly consists of a trigger assembly 5 and an adjustment assembly 6. The trigger assembly 5 is located below the contact block 304 and directly senses the instantaneous impact force generated when it comes into contact with the ground. The adjustment assembly 6 is built into the buffer rod 303 and is activated after the trigger assembly 5 is activated. Its working mechanism is as follows: according to the impact force signal transmitted by the trigger assembly 5, the flow area of the flow channel 305 in the hydraulic oil circuit is dynamically adjusted, so that the size of the damping force is changed, and finally the intelligent matching of the buffering degree and the impact working condition is realized.

[0041] As shown in Figure 3 and Figure 4 , the trigger assembly 5 consists of a trigger rod 501 and an elastic member 502. Specifically, the trigger rod 501 is inserted into the movable cavity 503 inside the contact block 304 in an extendable manner. The movable cavity 503 is designed with a small-diameter accommodation hole 504 at the bottom, through which the trigger rod 501 passes. The upper end of the trigger rod 501 is fixed with a limiting ring 505, which has a diameter larger than that of the accommodation hole 504, so as to constrain the movement of the limiting ring 505 within the movable cavity 503; the lower end of the trigger rod 501 extends to the outside of the contact block 304 and is fixed with a bottom plate 506. The elastic member 502 adopts a spiral spring form, which is sleeved outside the trigger rod 501 and supported between the bottom plate 506 and the contact block 304, providing a reset elastic force for the trigger rod 501 and ensuring that it remains in the initial extended state when not impacted.

[0042] As shown in Figures 3-6As shown, the adjusting assembly 6 is composed of an adjusting part 601, a moving part 602 and a connecting part 603. The adjusting part 601 is responsible for controlling the flow section of the hydraulic flow channel 305, the moving part 602 provides power for the adjusting action, and the connecting part 603 is used for linking the triggering assembly 5. The core components of the moving part 602 include a compression cavity 621, a compression disc 622, a moving rod 623, a clearance cavity 624 and a compression spring 625. The compression cavity 621 is axially provided inside the buffer rod 303, and the compression disc 622 is slidably assembled in the compression cavity 621. The outer edge of the compression disc 622 forms a dynamic seal with the cavity wall through a sealing rubber ring. The compression cavity 621 is provided with an air outlet channel 7 at the top, which extends to the outer wall of the contact block 304. Below the compression cavity 621 is the clearance cavity 624, and the bottom end of the moving rod 623 extends into the clearance cavity 624. The bottom of the clearance cavity 624 is provided with the compression spring 625, which is in a compressed state under normal circumstances by the pressure exerted by the pressure disc 8 on the outer wall of the moving rod 623, so that the compression disc 622 is kept at the bottom of the compression cavity 621.

[0043] The function of the connecting part 603 is to link the triggering rod 501 and the moving part 602. When the triggering rod 501 is in the initial untriggered state, the connecting part 603 locks the moving rod 623 at the lower limit, maintaining the pre-compression of the compression spring 625. Once the bottom disc 506 of the triggering rod 501 contacts the ground, the connecting part 603 is unlocked, the compression spring 625 releases potential energy, pushes the moving rod 623 upwards, and drives the compression disc 622 to move upwards in the compression cavity 621. During the upward movement of the compression disc 622, the air in the upper chamber is compressed and slowly discharged through the air outlet channel 7, forming a pneumatic damping, which makes the compression disc 622 move upwards at a uniform and slow speed. The upward movement of the compression disc 622 synchronously drives the adjusting part 601, causing the flow section of the flow channel 305 to gradually open from small to large. The key control is that when the triggering rod 501 is contracted to the top of the active cavity 503 under impact, it will force the moving rod 623 to stop moving upwards, and the compression disc 622 will stop moving, and the expansion process of the flow channel 305 will be terminated.

[0044] Based on the above mechanism, the system realizes self-adaptive adjustment: the greater the drop impact force of the substation, the faster the triggering rod 501 contracts, and it can quickly reach the end of the stroke, forcing the flow channel 305 to stop expanding at a small opening, thereby maintaining a higher damping force to resist strong impact; on the contrary, if the impact force is small, the triggering rod 501 contracts slowly, and the flow channel 305 expands to a larger opening for a longer time before being locked, so the system provides a smaller damping force, realizing flexible buffering.

[0045] As Figures 3-7As shown, the connecting part 603 is cooperatively formed by the positioning assembly 631 and the unlocking assembly 632, which are jointly responsible for controlling the height position of the compression disc 622. The positioning assembly 631 is used to lock the axial position of the compression disc 622 under certain working conditions, while the unlocking assembly 632 can release the locking state when necessary. The unlocking assembly 632 includes rotating sleeve 6321, slider 6322, slide rod 6323, guide groove 6324 and guide rod 6325, etc. The rotating sleeve 6321 is installed inside the movable cavity 503, and the upper and lower ends thereof are rotationally connected with the wall of the movable cavity 503. The limiting ring 505 is slidingly sleeved outside the rotating sleeve 6321 and can move axially together with the trigger rod 501. The inner cavity of the rotating sleeve 6321 is non-circular (such as quadrilateral), and the axially sliding slider 6322 is fitted and installed therein. The slider 6322 is fixedly connected with the slide rod 6323, which extends upward into the clearance cavity 624 and is connected with the compression disc 8. In order to achieve unlocking at the initial stage of the movement of the trigger rod 501 and relocking at the end of the movement, the guide groove 6324 is formed on the outer wall of the rotating sleeve 6321, and the guide rod 6325 is fixedly installed in the inner circle of the limiting ring 505 and movably inserted into the guide groove 6324, forming a motion conversion mechanism.

[0046] Specifically, as shown in the figure, Figure 9 The guide groove 6324 is the control core of the connecting part 603, and the profile thereof is sequentially connected by the unlocking section 3241, the straight section 3242 and the locking section 3243. The unlocking section 3241 is a groove spirally rising along the outer wall of the rotating sleeve 6321, and the starting end thereof is located at the bottom of the rotating sleeve 6321. When the trigger rod 501 is impacted and retracted, the limiting ring 505 and the guide rod 6325 are moved upward, the guide rod 6325 moves along the unlocking section 3241, forcing the rotating sleeve 6321 to rotate by a certain angle, thereby achieving unlocking. The unlocking section 3241 is connected with the straight section 3242 above, which extends straight along the axis of the rotating sleeve 6321, ensuring that the rotating sleeve 6321 remains unchanged during the upward movement of the compression disc 622 after unlocking, and the system is in an unlocked state. The locking section 3243 is located at the top of the rotating sleeve 6321, and the spiral direction thereof is opposite to that of the unlocking section 3241. When the trigger rod 501 moves to the end of the stroke, the guide rod 6325 enters the locking section 3243, driving the rotating sleeve 6321 to rotate reversely and reset, thereby restoring to the locking state, and completing the fixation of the new position of the compression disc 622. Through the three-section groove design, the time sequence control of the height locking state of the compression disc 622 is realized.

[0047] The positioning assembly 631 is the core mechanism for realizing the height locking of the compression disc 622, as shown in the figure, Figures 3-8As shown, it consists of positioning teeth 6311, positioning blocks 6312, a transverse column 6313, a guide ball 6314, and a guide ring 6315. Its working mechanism is as follows: A series of equidistantly distributed positioning teeth 6311 are axially distributed on the outer circumferential surface of the slide rod 6323. A transverse column 6313 is radially slidably mounted on the top of the rotating sleeve 6321. One end of the column extends into the sleeve and fixes the positioning block 6312, while the other end extends out of the sleeve and is fitted with a guide ball 6314. Under the action of the return spring 9, the transverse column 6313 tends to move outward, keeping the positioning block 6312 separated from the positioning teeth 6311 in normal operation. The guide ring 6315 is fixedly mounted on the outside of the rotating sleeve 6321, and its inner hole is designed with a gradually expanding profile, forming a kinematic pair with the guide ball 6314. When the rotating sleeve 6321 is at its initial angle, the guide ball 6314 is constrained by the minimum inner diameter of the guide ring 6315, pressing the return spring 9 to keep the positioning block 6312 engaged with the positioning tooth 6311. When the limiting ring 505 moves upward, driving the rotating sleeve 6321 to rotate by a specific angle, the guide ball 6314 slides into the maximum inner diameter of the guide ring 6315, and the return spring 9 pushes the transverse column 6313 outward, causing the positioning block 6312 to disengage from the positioning tooth 6311, releasing the axial constraint on the slide rod 6323. At this time, the compression spring 625 drives the compression disc 622 to move upward, thereby adjusting the flow area of ​​the flow channel 305 through the adjustment part 601.

[0048] In this embodiment, as Figures 3-10 As shown, the flow channel 305 is arranged axially through the upper and lower end faces of the piston disc 302, and its inner cavity has a conical structure that is larger at the top and smaller at the bottom. Multiple flow channels 305 are arranged in a ring array around the center of the piston disc 302. The adjustment part 601 consists of an adjustment rod 6011, a connecting rod 6012, and an adjustment conical column 6013. The bottom of the adjustment rod 6011 is fixed to the top of the compression disc 622, and its top extends upward into the adjustment cavity opened inside the buffer rod 303. Several radial connecting rods 6012 are evenly distributed and fixed on the outer wall of the section of the adjustment rod 6011 located in the adjustment cavity. Radial through grooves 10 are opened on the side wall of the adjustment cavity to provide clearance space for the connecting rods 6012, so that they can move synchronously with the longitudinal direction of the adjustment rod 6011. The outer end of each connecting rod 6012 extends into the piston cylinder 301 and is fixedly connected to the bottom end of the adjustment conical column 6013 inserted into the corresponding flow channel 305. The conical angle of the adjusting conical column 6013 matches the conical surface of the flow channel 305, and its length is greater than the thickness of the piston disc 302. Under normal conditions, the outer wall of the conical column maintains a small gap with the inner wall of the flow channel 305, so that the flow channel 305 is at the minimum flow cross section. When the compression disc 622 moves upward, causing the adjusting rod 6011 and the conical column to rise, the annular gap of the flow channel 305 increases accordingly, and the flow area increases, thereby realizing the adaptive adjustment of the buffering force of the piston cylinder 301.

[0049] The principle of the present application is as follows: the working principle of the adaptive damping system of the prepackaged shockproof box-type substation of the present application is based on the synergistic effect of mechanical hydraulic feedback and automatic adjustment. In the initial state of the system, the flow passage 305 has the smallest opening degree at the cross section, providing basic damping force. When the substation is hoisted and dropped, the contact block 304 first contacts the ground, triggering the trigger rod 501 to retract upward under the action of impact force, and the retraction speed directly reflects the impact strength. The movement of the trigger rod 501 is converted into a specific angular rotation of the rotating sleeve 6321 through the connecting part 603 (guide groove 6324-guide rod 6325 mechanism), which in turn drives the positioning assembly 631 to release the axial locking of the sliding rod 6323. The compression spring 625 in the movable part 602 is released, which pushes the compression disc 622 to move upward at a constant speed in the compression cavity 621, synchronously driving the adjusting rod 6011 and the connecting rod 6012 of the adjusting part 601 to lift the adjusting conical column 6013 in the flow passage 305. The conical column rises to gradually expand the flow area of the flow passage 305, reducing the damping force. The key control point is that the faster the trigger rod 501 retracts (the greater the impact), the earlier it reaches the end of the stroke, forcing the movable rod 623 to stop moving, so that the flow passage 305 is locked at a small opening degree, maintaining high damping force to resist strong impact; on the contrary, when the trigger rod 501 retracts slowly, the flow passage 305 has a longer time to expand to a larger opening degree, and the system provides small damping force to realize flexible buffering. The whole process realizes impact sensing, signal conversion and damping self-adjustment through pure mechanical structure, without the need for external energy intervention.

[0050] It will be obvious to a person skilled in the art that the application is not limited to the details of the above-described exemplary embodiments, but that the application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. The embodiments should therefore be considered in all respects as illustrative and not restrictive, the scope of the application being defined by the appended claims rather than by the above description, and it is therefore intended that all changes and modifications that fall within the meaning and range of equivalency of the elements of the claims are encompassed by the application. Any reference signs in the claims should not be considered as limiting the claims involved.

Claims

1. A prepackaged shockproof box-type transformer station, comprising a transformer box (1) and a base (2), shock-absorbing mechanisms (3) being arranged on both sides of the base (2), the shock-absorbing mechanisms (3) being connected to the side edges of the base (2) through mounting plates (4), characterized in that, The damping mechanism (3) is an adaptive hydraulic damping mechanism, which comprises a piston cylinder (301), a buffer rod (303), a trigger assembly (5) and an adjusting assembly (6); The piston cylinder (301) is filled with hydraulic oil and is provided with a piston disc (302) for separating the inner cavity into an upper chamber and a lower chamber, the upper end of the buffer rod (303) is connected to the piston disc (302), and the lower end of the buffer rod (303) extends out of the piston cylinder (301) and is provided with a contact block (304); The piston disc (302) is provided with a flow channel (305) for communicating the upper and lower chambers, the trigger assembly (5) is arranged on the contact block (304) and is used for sensing the impact speed; The adjusting assembly (6) is arranged in the buffer rod (303) and is used for dynamically adjusting the flow area of the flow channel (305) in response to the trigger assembly (5); The trigger assembly (5) comprises a trigger rod (501) and an elastic member (502), the trigger rod (501) is movably inserted into the contact block (304), the lower end of the trigger rod (501) extends out of the bottom of the contact block (304) and is provided with a bottom disc (506), the elastic member (502) provides a restoring force for the trigger rod (501); the adjusting assembly (6) is used for converting the linear motion of the trigger rod (501) into control of the flow area of the flow channel (305); The adjusting assembly (6) comprises an adjusting part (601), a movable part (602) and a connecting part (603), the movable part (602) comprises a compression cavity (621), a compression disc (622) slidably arranged in the compression cavity (621) and a compression spring (625) for providing a driving force; The connecting part (603) is used for locking the movable part (602) when the trigger rod (501) is not triggered, and is used for unlocking the movable part (602) when the trigger rod (501) is contracted by impact, so as to release the compression spring (625) to drive the compression disc (622) to move upward; The adjusting part (601) is driven by the compression disc (622) and is used for lifting or lowering an adjusting conical column (6013) arranged in the flow channel (305), so as to change the flow area of the flow channel (305); The connecting part (603) comprises a rotating sleeve (6321), a sliding rod (6323), a guide groove (6324) and a guide rod (6325); the guide groove (6324) is formed in the outer wall of the rotating sleeve (6321) and comprises an unlocking section (3241), a straight section (3242) and a locking section (3243) which are sequentially connected; when the trigger rod (501) is contracted to drive the guide rod (6325) to move along the unlocking section (3241), the rotating sleeve (6321) is driven to rotate by a specific angle to realize unlocking; after the guide rod (6325) enters the straight section (3242), the system remains in the unlocked state, and the compression disc (622) can move upward at a constant speed; when the trigger rod (501) moves to the end of the stroke, the guide rod (6325) enters the locking section (3243), the rotating sleeve (6321) is driven to rotate reversely to reset and relock the system; The connecting part (603) further comprises a positioning assembly (631) comprising a positioning plug (6312) cooperating with a positioning tooth (6311) on a slide rod (6323); the rotary motion of the rotating sleeve (6321) controls the engagement and disengagement of the positioning plug (6312) and the positioning tooth (6311) through a horizontal moving column (6313) and a guide ball (6314), thereby realizing the locking and unlocking of the entire adjusting assembly (6).

2. A prepackaged shock mounted box-type substation as claimed in claim 1, wherein, The top of the compression cavity (621) of the movable part (602) is provided with an air outlet channel (7), the compression disc (622) moves upwards to compress the air above and make it slowly discharge through the channel, the generated pneumatic damping force ensures the uniform upward movement of the compression disc (622), thereby providing a gradual change of the flow area of the flow channel (305).

3. A prepackaged shock mounted box-type substation as claimed in claim 1, wherein, The adjusting part (601) comprises an adjusting rod (6011), a connecting rod (6012) and an adjusting conical column (6013); the taper angle of the adjusting conical column (6013) matches the taper angle of the flow channel (305), and the bottom end thereof is connected with the adjusting rod (6011) driven by the compression disc (622) through the connecting rod (6012).

4. A prepackaged shock mounted box-type substation as claimed in claim 1, wherein, The flow channel (305) has a plurality of flow channels (305) arranged along the circular central annular array of the piston disc (302), and each flow channel (305) is inserted with an adjusting conical column (6013).

5. A prepackaged shock mountable transformer substation according to any one of claims 1 to 4, wherein, The damping mechanism (3) and the base (2) are detachably connected, and after the substation is installed in place, the entire damping mechanism (3) can be removed from the base (2).

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