Cable branch box with shock absorption and drainage functions

Abstract

The application relates to a cable branch box with a shock-absorbing drainage function, and relates to the field of electrical equipment protection, which comprises a box body and a supporting plate arranged in the box body, is further provided with a shock-absorbing drainage system, the system comprises a hydraulic energy conversion module, an inertia triggering module, a transmission isolation module and a liquid-solid coupling module connected in sequence, can convert mechanical vibration energy into hydraulic energy, opens an oil way when a preset vibration threshold is reached, and separates an oil cavity, a water cavity and an air cavity through a sliding piston, the water cavity is connected with a drainage pipeline provided with an adjustable damping valve; a condensate water collecting system is further arranged, comprising a water guide groove, a water collecting plate and a water blocking ring, the water collecting plate is connected with a condensate collecting box through a pipeline, and the supporting plate is connected with the box body through a damping spring to form a staged damping system. The application achieves the effects of effective damping and drainage, and can play a good protection role on the cable branch box.

Description

Technical Field

[0001] This application relates to the field of electrical equipment protection, and in particular to a cable branch box with shock absorption and drainage functions. Background Technology

[0002] Cable distribution boxes, as important electrical equipment, play a crucial role in the distribution and transmission of power in power systems. With the continuous development of the power industry, the application scenarios of cable distribution boxes are becoming increasingly widespread, and their working environments are becoming more complex and diverse. In humid and vibration-prone environments, cable distribution boxes face severe challenges. Humid environments easily lead to condensation inside the cable distribution box, and excessive condensation can damage the electrical components inside, affecting the normal operation and service life of the equipment; vibration can loosen electrical connections, increasing the probability of malfunctions and even causing safety accidents. Therefore, how to effectively solve the vibration reduction and drainage problems of cable distribution boxes in humid and vibration-prone environments has become an important issue for ensuring the stable operation of power systems.

[0003] In related technologies, because the vibration damping and drainage systems operate independently and lack an effective coordination mechanism, they cannot automatically adjust their drainage capacity according to vibration conditions. This means that under conditions of significant vibration, the drainage system may fail to promptly remove the additional condensate generated by the vibration, exacerbating the water accumulation problem inside the box. Simultaneously, the independent system structure results in low space utilization within the cable distribution box, increasing the equipment's size and cost. Furthermore, traditional vibration damping methods are ineffective in complex vibration environments, failing to effectively protect the electrical components inside the box; simple drainage methods are also ill-suited to handling rapidly generated condensate, easily leading to poor drainage and affecting the normal operation and service life of the cable distribution box. Summary of the Invention

[0004] The purpose of this application is to overcome the above-mentioned technical problems and provide a cable branch box with shock absorption and drainage functions.

[0005] A cable distribution box with shock absorption and drainage functions includes a box body and a support plate disposed inside the box body, and further includes: The vibration damping and drainage system includes a hydraulic energy conversion module, an inertial triggering module, a transmission isolation module, and a hydraulic-solid coupling module connected in sequence. The hydraulic energy conversion module includes a hydraulic cylinder connected to a support plate, used to convert mechanical vibration energy into hydraulic energy; The inertia triggering module includes an inertia valve connected to a hydraulic cylinder, which is used to open the oil circuit when a preset vibration threshold is reached; The transmission isolation module includes a transmission cylinder, which isolates the oil chamber and the water chamber by means of a first sliding piston; The liquid-solid coupling module includes a coupling water chamber, which isolates the water chamber and the air chamber by a second sliding piston; The water chamber is connected to a drain pipe, which is equipped with an adjustable damping valve.

[0006] By adopting the above technical solution, a deep mechanical coupling of vibration reduction and drainage functions is achieved, and vibration energy is directly converted into drainage power through mechanical transmission, forming an adaptive mechanism of "the greater the vibration, the stronger the drainage". This realizes a multi-level energy conversion path of "mechanical energy → hydraulic energy → hydrodynamic energy → thermal energy", significantly improving energy dissipation efficiency. The series connection of the four functional modules makes the system structure compact, solving the problems of large space occupation and poor coordination caused by the independent vibration reduction and drainage systems in traditional solutions.

[0007] Optionally, the inertial valve includes: a valve body with an internal valve seat separating the inflow chamber and the outflow chamber; a heavy metal ball sealed in the valve seat under the preload of a support spring; and a linkage mechanism including a linkage rod connected to the heavy metal ball and an umbrella-shaped block disposed in the outflow chamber; wherein the linkage rod passes through the valve seat, and the umbrella-shaped block pushes the linkage rod to open the heavy metal ball under the pressure of the backflow oil.

[0008] By adopting the above technical solution, bidirectional intelligent control of the system is achieved. During forward triggering, when the vibration reaches the threshold, the inertial force of the heavy metal ball overcomes the spring preload to open the oil circuit, ensuring that the system starts in time when needed. During reverse reset, the umbrella block-linkage rod mechanism actively pushes open the valve ball under the action of backflow oil pressure, solving the instability problem of traditional inertial valves relying on system pressure difference for reset. The line contact seal between the heavy metal ball and the valve seat ensures the sealing reliability in complex vibration environments. At the same time, through the series architecture of the four-level modules of "hydraulic energy conversion - inertial triggering - transmission isolation - hydraulic-solid coupling", deep mechanical coupling of vibration reduction and drainage functions is achieved. Vibration energy is directly converted into drainage power through mechanical transmission, forming an adaptive mechanism of "the greater the vibration, the stronger the drainage". This realizes a multi-level energy conversion path of "mechanical energy → hydraulic energy → water kinetic energy → thermal energy", significantly improving energy dissipation efficiency. Moreover, the series connection of the four functional modules makes the system structure compact, solving the problems of large space occupation and poor coordination caused by the independent vibration reduction and drainage systems in traditional solutions.

[0009] Optionally, the inertial valve may also include: an adjustment mechanism, including an adjustment rod, an adjustment plate, and a sealing bellows; the adjustment rod is threadedly connected to the valve body, and the preload of the support spring is changed by rotating the adjustment rod; the sealing bellows isolates the adjustment mechanism from the inflow chamber.

[0010] By adopting the above technical solutions, the adjustment mechanism achieves precise adjustment of the system's trigger sensitivity, enabling the same product to adapt to different vibration environments. The sealed bellows prevents oil leakage and oil contamination from affecting the adjustment accuracy, and the threaded structure of the adjustment rod facilitates quantitative adjustment.

[0011] Optionally, the transmission cylinder includes: a second cylinder body, in which a first sliding piston is slidably mounted; one end of the first sliding piston has an arc-shaped cavity for receiving oil pressure impacts from the inertia valve; the other end of the first sliding piston is rigidly connected to the second sliding piston of the coupling water chamber. By adopting the above technical solution, mechanical vibration energy is converted into hydraulic energy, and the oil circuit is opened when a preset vibration threshold is reached. The arc-shaped cavity structure effectively mitigates the impact force of the high-pressure oil, avoiding rigid impacts on the piston rod. The rigid connection between the piston rods ensures no lag in force transmission, improving system response speed. Simultaneously, the buffer design reduces peak impact force, extending the service life of the transmission mechanism, achieving deep mechanical coupling of vibration damping and drainage functions, and establishing system-level functional integration. Optionally, the coupling water chamber includes: an annular baffle that divides the chamber into a water chamber and an air chamber; an annular water bladder fitted onto the second sliding piston and located within the water chamber; and an inflation valve located at the end of the air chamber for filling and maintaining inert gas pressure. By adopting the above technical solution, the annular partition and the annular water bladder form a double isolation barrier, which can completely eliminate the risk of oil-water mixing; the pre-filled inert gas provides a stable reset pressure to ensure the consistency of system reset; the flexible design of the annular water bladder adapts to volume changes at different temperatures, avoiding the thermal expansion and contraction problems of rigid structures; the vibration damping and drainage system converts mechanical vibration energy into hydraulic energy, and opens the oil circuit when the preset vibration threshold is reached. After transmission isolation, the water chamber is compressed, which increases the liquid pressure in the water chamber and discharges it out of the tank to achieve active drainage. At the same time, the liquid flows through the adjustable damping valve to generate viscous resistance, which converts vibration energy into heat energy for dissipation, thereby achieving vibration damping.

[0012] Optionally, the water chamber is connected to: an inlet check valve, which is connected to the condensate collection tank via a water replenishment pipe; and an outlet check valve, which is connected to an adjustable damping valve via a drain pipe; wherein the condensate collection tank is positioned higher than the coupling water chamber, and automatic water replenishment is achieved by gravity.

[0013] By adopting the above technical solution, automatic water replenishment can be achieved by utilizing the height difference without the need for additional power. The one-way valve at the inlet can prevent high-pressure water from flowing back and contaminating the collection system, and can also ensure that the damping water is continuously replenished, avoiding water quality deterioration that could affect system performance.

[0014] Optionally, the adjustable damping valve is a needle valve.

[0015] By adopting the above technical solutions, the damping characteristics are adjustable, and the damping coefficient can be changed by adjusting the handwheel, so as to achieve precise optimization of the vibration reduction performance on site; the conical valve core of the needle valve provides linear flow-opening characteristics, which facilitates precise control; the wide range of adjustment capabilities enables the system to adapt to various working conditions from high-frequency small-amplitude vibration to low-frequency large-amplitude vibration.

[0016] Optionally, a condensate collection system is also included: a water guide trough, located on the inner wall of the tank and coated with a hydrophilic coating; a water collection plate, located on the lower part of the inner wall of the tank and equipped with a water collection trough; and a water baffle ring, located above the water collection plate and bent towards the inner wall of the tank; wherein the water collection plate is connected to the condensate collection tank through a pipe.

[0017] By adopting the above technical solutions, the hydrophilic coating and water guide channel design change the surface tension of water, promote the rapid collection of condensate, the water-blocking ring effectively prevents water droplets from splashing, ensures that all condensate is introduced into the collection system, and the water collection plate provides sufficient temporary storage capacity to adapt to sudden large amounts of condensation, significantly improving moisture-proof efficiency.

[0018] Optionally, the support plate is connected to the housing via damping springs, and the spring constant of the damping springs is matched with the damping characteristics of the hydraulic cylinder to form a graded damping system.

[0019] By adopting the above technical solutions, the vibration damping spring can absorb high-frequency small-amplitude vibrations, reduce the frequency of hydraulic system operation, and the matching design of spring characteristics and hydraulic damping can avoid resonance and improve comfort. The graded vibration damping can also reduce peak acceleration, protect the precision electrical components inside the box, and achieve reasonable distribution of vibration energy.

[0020] In summary, this application includes at least one of the following beneficial technical effects: 1. Through the serial architecture of four-level modules of "hydraulic energy conversion - inertial triggering - transmission isolation - hydraulic-solid coupling", deep mechanical coupling of vibration reduction and drainage functions is achieved, and vibration energy is converted into drainage power, forming an adaptive mechanism of "the greater the vibration, the stronger the drainage", which solves the problem of poor coordination between vibration reduction and drainage systems in traditional solutions; 2. The system realizes a multi-stage energy conversion path of "mechanical energy → hydraulic energy → hydrodynamic energy → thermal energy", which significantly improves energy dissipation efficiency and solves the problem of poor vibration reduction effect of traditional vibration reduction methods in complex vibration environments; 3. The series connection of the four functional modules makes the system structure compact, solving the problem of large space occupation caused by the independent vibration reduction and drainage systems in traditional solutions; 4. The condensate collection system improves moisture-proof efficiency through the design of water guide channels, water collection plates and water baffle rings, allowing condensate in the box to flow into the collection box, solving the problem that traditional drainage methods cannot cope with rapidly generated condensate and are prone to causing poor drainage. 5. The graded vibration reduction system achieves reasonable distribution of vibration energy through the cooperation of vibration reduction springs and hydraulic cylinders, reduces the frequency of hydraulic system operation, avoids resonance, and protects the precision electrical components inside the box. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2This is a structural schematic diagram of the present application, mainly showing the support plate; Figure 3 This is a structural schematic diagram of the present application, mainly showing the vibration damping spring; Figure 4 yes Figure 3 A magnified view of part A in the middle; Figure 5 This is a structural schematic diagram of the present application, mainly showing the hydraulic cylinder, inertia valve, transmission cylinder, coupling water tank, and collection tank; Figure 6 This is an exploded structural diagram of the present application, mainly showing the sealed bellows; Figure 7 This is a cross-sectional structural diagram of the present application, mainly showing the heavy metal sphere; Figure 8 This is a cross-sectional structural diagram of the present application, mainly showing the first sliding piston; Figure 9 This is a cross-sectional structural diagram of this application, mainly showing the annular water bladder.

[0022] Figure Descriptions: 1. Housing; 2. Support Plate; 3. Hydraulic Cylinder; 301. First Cylinder Body; 302. Vibration Damping Piston; 4. Inertia Valve; 401. Valve Body; 402. Valve Seat; 403. First Connecting Bellows; 404. Second Connecting Bellows; 405. Adjusting Rod; 406. Adjusting Plate; 407. Sealing Bellows; 408. Support Spring; 409. Heavy Metal Ball; 410. Linkage Rod; 411. Support Frame; 412. Support Block; 413. Umbrella-Shaped Block; 5. Transmission Cylinder; 501. First Slide 502. Moving piston; 6. Second cylinder body; 7. Coupling water chamber; 8. Second sliding piston; 9. Chamber body; 10. Annular baffle; 11. First pressure plate; 12. Annular water bladder; 13. Second pressure plate; 14. Damping valve; 15. Mounting groove; 16. Vibration damping spring; 17. Connecting plate; 18. Water guide groove; 19. Water collection plate; 20. Water collection trough; 11. Water baffle ring; 12. Air valve; 13. Inlet check valve; 14. Outlet check valve; 15. Collection tank; 16. Water supply pipe; 27. Drain pipe. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1 - Appendix Figure 9 This application will be described in further detail below.

[0024] A cable branch box with shock absorption and drainage function, reference Figure 1 , Figure 2The system includes a housing 1, a support plate 2 installed inside the housing 1, and a shock-absorbing and drainage system installed inside the housing 1. The shock-absorbing and drainage system includes a hydraulic energy conversion module, an inertial triggering module, a transmission isolation module, and a liquid-solid coupling module connected in sequence. The hydraulic energy conversion module includes a hydraulic cylinder 3 connected to the support plate 2, used to convert mechanical vibration energy into hydraulic energy. The inertial triggering module includes an inertial valve 4 connected to the hydraulic cylinder 3, used to open the oil circuit when a preset vibration threshold is reached. The transmission isolation module includes a transmission cylinder 5, which isolates the oil chamber and the water chamber through a first sliding piston 501. The liquid-solid coupling module includes a coupling water chamber 6, which isolates the water chamber and the air chamber through a second sliding piston 601. The water chamber is connected to a drainage pipe, and an adjustable damping valve 7 is installed on the drainage pipe 20 to increase energy dissipation.

[0025] Reference Figure 3 The housing 1 has mounting slots 8 at each of its four corners. A damping spring 9 is fixedly connected to the inner wall above each mounting slot 8. The elastic coefficient of the damping spring 9 matches the damping characteristics of the hydraulic cylinder 3, forming a graded damping system. Additionally, a connecting plate 10 is integrally formed at each of the four corners of the support plate 2. The end of the damping spring 9 facing the bottom of the housing 1 is connected to the connecting plate 10 via a connector, creating a gap between the support plate 2 and the inner wall of the housing 1. Simultaneously, the support plate 2 divides the housing 1 into an upper electrical cavity and a lower functional cavity. Electronic components are installed in the electrical cavity; the hydraulic cylinder 3, inertia valve 4, coupling water tank 6, and transmission cylinder 5 are installed in the functional cavity.

[0026] Reference Figure 3 , Figure 4 The inner wall of the housing 1 is equipped with a condensation plate, on which several water guiding grooves 11 are formed. The water guiding grooves 11 are vertically formed and coated with a hydrophilic coating, so that the condensed water can quickly spread and form a water film when it forms on the inner wall of the water guiding grooves 11 or the inner wall surface of the housing 1. A water collecting plate 12 is fixedly connected to the inner wall of the housing 1 below the condensation plate. A water collecting groove 13 is formed in the water collecting plate 12, and the opening of the water collecting groove 13 faces the outlet of the water guiding groove 11. At the same time, a water baffle ring 14 is fixedly connected to the water collecting plate 12. The water baffle ring 14 is installed on the side of the water collecting plate 12 near the support plate 2, and the water baffle ring 14 is bent towards the inner wall and the inner top of the housing 1.

[0027] Reference Figure 3 , Figure 5The hydraulic cylinder 3 is fixedly connected to the bottom of the functional cavity of the housing 1. The hydraulic cylinder 3 includes a first cylinder body 301, which has an oil storage chamber filled with insulating oil. The opening of the oil storage chamber of the first cylinder body 301 faces towards the support plate 2, and a vibration damping piston 302 is slidably connected inside it. A first sealing ring is fixedly connected to the opening of the oil storage chamber of the first cylinder body 301, and the first sealing ring abuts against the surface of the vibration damping piston 302. The part of the vibration damping piston 302 extending out of the first cylinder body 301 is fixedly connected to the support plate 2 by screws. When the support plate 2 is vibrated, the vibration damping piston 302 squeezes the insulating oil, thereby converting the vibration energy into pressure energy, thus reducing the vibration of the support plate 2.

[0028] Reference Figure 5 , Figure 6 , Figure 7 The hydraulic cylinder 3 is connected to an inertia valve 4, which includes a valve body 401 and a valve seat 402 fixedly connected inside the valve body 401. The valve seat 402 divides the valve body 401 and forms an inflow chamber and an outflow chamber. The valve body 401 has an inlet at the inflow chamber, which is connected to the inside of the hydraulic cylinder 3 through a first connecting bellows 403; the valve body 401 has an outlet at the outflow chamber, which is connected to the inside of the transmission cylinder 5 through a second connecting bellows 404.

[0029] Reference Figure 6 , Figure 7 The valve body 401 has an adjustment hole at the inflow cavity, and an adjustment rod 405 passes through the adjustment hole, with the adjustment rod 405 threadedly connected to the adjustment hole. Furthermore, an adjustment plate 406 is rotatably connected to the portion of the adjustment rod 405 inside the valve body 401. A sealing bellows 407 is fixedly connected to the circumference of the adjustment plate 406 and is connected to the valve body 401 through the sealing bellows 407, thus separating the adjustment hole from the inflow cavity. Simultaneously, a second sealing ring is fitted over the sealing bellows 407, and the second sealing ring is fixedly connected to the inner wall of the valve body 401. An indicator line is provided on the surface of the adjustment rod 405 to indicate the safe extension length of the sealing bellows 407, preventing over-adjustment of the adjustment rod 405.

[0030] A support spring 408 is fixedly connected to the side of the adjusting plate 406 away from the adjusting rod 405. The support spring 408 is positioned towards the center of the valve seat 402, and in its natural state, it can pass through the valve seat 402. Additionally, a heavy metal ball 409 is fixedly connected to the side of the support spring 408 facing the valve seat 402, and the heavy metal ball 409 is located within the inflow cavity. The support spring 408 applies preload to the heavy metal ball 409 towards the valve seat 402, causing the heavy metal ball 409 to block the valve seat 402, thereby isolating the inflow cavity from the outflow cavity.

[0031] A first arc-shaped groove is formed on the side of the heavy metal ball 409 away from the support spring 408. The cross-section of the first arc-shaped groove is strip-shaped, and a linkage rod 410 is rotatably connected within the first arc-shaped groove. Both ends of the linkage rod 410 are integrally formed with spherical blocks, which are rotatably connected to the first arc-shaped groove. The linkage rod 410 passes through the valve seat 402 and extends into the outflow cavity. Simultaneously, a support frame 411 is fixedly connected to the inner wall of the outflow cavity, and a support block 412 is slidably connected within the support frame 411. A second arc-shaped groove is formed on the side of the support block 412 near the linkage rod 410. The cross-section of the second arc-shaped groove is arc-shaped, and the linkage rod 410 is rotatably connected to the second arc-shaped groove via the spherical blocks. An umbrella-shaped block 413 is integrally formed on the side of the support block 412 away from the linkage rod 410, and the umbrella-shaped block 413 protrudes arc-shaped towards the valve seat 402.

[0032] Reference Figure 5 , Figure 8 The transmission cylinder 5 includes a second cylinder body 502. A through hole is provided on one side of the second cylinder body 502, and a second connecting bellows 404 is connected to the second cylinder body 502 at the surface where the through hole is located, thereby connecting the outlet chamber of the inertial valve 4 with the interior of the second cylinder body 502. A first sliding piston 501 is slidably connected inside the second cylinder body 502. In its initial position, the first sliding piston 501 abuts against the inner wall of the second cylinder body 502 at the through hole, and an arc-shaped cavity is provided on the side of the first sliding piston 501 facing the second connecting bellows 404. The side of the first sliding piston 501 away from the second connecting bellows 404 extends out of the second cylinder body 502.

[0033] Reference Figure 5 , Figure 9 The coupling water tank 6 includes a tank body 602 and a second sliding piston 601 slidably disposed within the tank body 602. An annular partition 603 is fixedly connected to the inner wall of the tank body 602, dividing the inner wall of the tank body 602 into a water chamber and an air chamber. The end of the second sliding piston 601 away from the air chamber extends out of the tank body 602 and is connected and fixed to the first sliding piston 501 via a connector. The second sliding piston 601 passes through the annular partition 603 and extends into the air chamber. At the same time, a third sealing ring is fixedly connected to the annular inner wall of the annular partition 603, and the third sealing ring abuts against the surface of the second sliding piston 601.

[0034] A first pressure plate 604 is axially fitted onto a portion of the second sliding piston 601 within the water cavity. The surface of the first pressure plate 604 is covered with an elastic rubber layer and abuts against the inner wall of the chamber 602. Simultaneously, an annular water bladder 605 is fixedly connected to the side of the first pressure plate 604 facing the annular partition 603 and is filled with condensate. The annular water bladder 605 is simultaneously fitted onto the outer surface of the second sliding piston 601 at the water cavity, with the end of the annular water bladder 605 away from the first pressure plate 604 fixedly connected to the surface of the annular partition 603. A second pressure plate 606 is fixedly connected to the end of the second sliding piston 601 at the air cavity. The surface of the second pressure plate 606 is also covered with an elastic rubber layer, and in the initial state, the second pressure plate 606 abuts against the surface of the annular partition 603, forming a sealed cavity between the second pressure plate 606 and the bottom of the chamber 602. In addition, an inflation valve 15 is fixedly connected to the end surface of the chamber 602 opposite to the first sliding piston 501. Inert gas is injected into the sealed cavity through the inflation valve 15. The inflation valve 15 remains in a normally closed state after inflation is completed.

[0035] Reference Figure 3 , Figure 5 , Figure 9 A water inlet check valve 16 and a water outlet check valve 17 are fixedly connected to the surface of the chamber 602 at the water cavity. The water inlet check valve 16 is connected to a condensate collection tank 18 via a water supply pipe 19. The condensate collection tank 18 is connected to the bottom of the chamber 1 via a fixing bracket and is positioned above the chamber 602. Simultaneously, the condensate collection tank 18 is connected to the water collection trough 13 of the water collection plate 12 via a pipe, allowing condensate from the chamber 1 to flow into the collection tank 18. An overflow port is provided on the collection tank 18 to prevent excessive condensate buildup.

[0036] Reference Figure 3 , Figure 5 The outlet check valve 17 is connected to the drain pipe 20, and the overflow port of the collection tank 18 is connected to the drain pipe 20 via a pipe. An adjustable damping valve 7 is connected along the path of the drain pipe 20. The adjustable damping valve 7 is a needle valve, comprising a needle valve body, a conical needle valve core, and an adjusting handwheel. By rotating the adjusting handwheel, the needle valve core can be moved relative to the needle valve seat, thereby precisely changing the cross-sectional area of ​​the liquid flow channel through the needle valve body. A decrease in the flow channel area increases the liquid flow resistance, thus enhancing the damping effect of the system; conversely, an increase in the flow channel area decreases the damping effect. In this way, operators can calibrate and optimize the damping force of the vibration reduction system on-site according to the vibration characteristics of the actual installation location of the cable branch box to achieve the best vibration reduction effect.

[0037] The implementation principle of this application embodiment is as follows: When the cable branch box is subjected to external vibration, the support plate 2 is displaced, and the damping spring 9 provides initial buffering. This drives the damping piston 302 of the hydraulic cylinder 3 to compress the insulating oil, converting the vibration energy into oil pressure. The oil pressure is transmitted to the inertia valve 4 through the first connecting bellows 403. When the vibration acceleration reaches a preset threshold, the heavy metal ball 409 of the inertia valve 4 overcomes the preload of the support spring 408 under the action of inertial force, disengaging from the valve seat 402 and opening the oil circuit. The oil pressure then enters the transmission cylinder 5 through the second connecting bellows 404. The first sliding piston 501 of the transmission cylinder 5 is pushed by the oil pressure, transmitting the motion to the second sliding piston 601 of the coupling water chamber 6. The second sliding piston 601 compresses the water chamber, increasing the pressure of the liquid condensate in the water chamber, opening the outlet check valve 17, and flowing through the adjustable damping valve 7. The liquid generates viscous resistance when flowing through the adjustable damping valve 7, converting the vibration energy into heat energy for dissipation, thus achieving vibration reduction. At the same time, the liquid is discharged outside the tank, completing the active drainage.

[0038] After the vibration stops, the inert gas in the air chamber of the coupling water tank 6 expands, pushing the second sliding piston 601 to reset, restoring the water chamber volume, generating negative pressure, and opening the inlet check valve 16 to draw in new condensate from the condensate collection tank 18 for replenishment. Simultaneously, the first sliding piston 501 of the transmission cylinder 5, during the reset process, squeezes the oil inside, causing it to flow back through the second connecting bellows 404 to the outlet chamber of the inertia valve 4. At this time, the hydraulic pressure in the outlet chamber increases, pushing the umbrella block 413 to slide closer to the valve seat 402. The umbrella block 413, through the support block 412, pushes the linkage rod 410, causing the linkage rod 410 to push open the heavy metal ball 409, resulting in the deformation and contraction of the support spring 408, thereby opening the oil passage of the inertia valve 4, allowing the oil to flow back to the hydraulic cylinder 3, completing the system reset. The condensate collection tank 18 collects the condensate in the tank 1 through the water collection plate 12 and the water guide trough 11, forming a circulation. The entire system automatically achieves coordinated shock absorption and drainage through mechanical structure, improving the reliability of the equipment in humid and vibration-prone environments.

[0039] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cable branch box with shock absorption and drainage function, comprising a box body (1) and a support plate (2) disposed within the box body (1), characterized in that, Also includes: A shock-absorbing and drainage system, comprising a hydraulic energy conversion module, an inertial triggering module, a transmission isolation module, and a hydraulic-solid coupling module connected in sequence; The hydraulic energy conversion module includes a hydraulic cylinder (3) connected to the support plate (2) for converting mechanical vibration energy into hydraulic energy; The inertial triggering module includes an inertial valve (4) connected to the hydraulic cylinder (3), which is used to open the oil circuit when a preset vibration threshold is reached; The transmission isolation module includes a transmission cylinder (5), which isolates the oil chamber and the water chamber through a first sliding piston (501); The liquid-solid coupling module includes a coupling water chamber (6), which isolates the water chamber and the air chamber by a second sliding piston (601); The water chamber is connected to a drain pipe (20), and an adjustable damping valve (7) is installed on the drain pipe (20).

2. A cable branch box with shock absorption and drainage function according to claim 1, characterized in that, The inertial valve (4) includes: The valve body (401) has a valve seat (402) inside to separate the inflow chamber and the outflow chamber; The heavy metal ball (409) is sealed to the valve seat (402) under the preload of the support spring (408); The linkage mechanism includes a linkage rod (410) connected to the heavy metal ball (409) and an umbrella-shaped block (413) disposed in the outflow cavity; The linkage rod (410) passes through the valve seat (402), and the umbrella-shaped block (413) pushes the linkage rod (410) to open the heavy metal ball (409) under the action of the return oil pressure.

3. A cable branch box with shock absorption and drainage function according to claim 2, characterized in that, The inertial valve (4) also includes: The adjustment mechanism includes an adjustment rod (405), an adjustment plate (406), and a sealing bellows (407); The adjusting rod (405) is threadedly connected to the valve body (401), and the preload of the support spring (408) can be changed by rotating the adjusting rod (405); The sealed bellows (407) isolates the regulating mechanism from the inflow cavity.

4. A cable branch box with shock absorption and drainage function according to claim 1, characterized in that, The transmission cylinder (5) includes: The second cylinder (502) has the first sliding piston (501) slidably mounted inside it; The first sliding piston (501) has an arc-shaped cavity at one end for receiving oil pressure impact from the inertial valve (4); The other end of the first sliding piston (501) is rigidly connected to the second sliding piston (601) of the coupling water tank (6).

5. A cable branch box with shock absorption and drainage function according to claim 1, characterized in that, The coupling water tank (6) includes: An annular baffle (603) divides the cabin (602) into a water chamber and an air chamber; An annular water bladder (605) is fitted onto the second sliding piston (601) and located inside the water cavity; An inflation valve (15) is located at the end of the air chamber and is used to fill and maintain the pressure of inert gas.

6. A cable branch box with shock absorption and drainage function according to claim 5, characterized in that, The water cavity is connected to: The inlet check valve (16) is connected to the condensate collection tank (18) via the water supply pipe (19); The outlet check valve (17) is connected to the adjustable damping valve (7) through the drain pipe (20); The condensate collection tank (18) is positioned higher than the coupling water tank (6), and automatic water replenishment is achieved by gravity.

7. A cable branch box with shock absorption and drainage function according to claim 1, characterized in that, The adjustable damping valve (7) is a needle valve.

8. A cable branch box with shock absorption and drainage function according to claim 1, characterized in that, It also includes a condensate collection system: A water guide channel (11) is installed on the inner wall of the box (1) and its surface is coated with a hydrophilic coating; A water collection plate (12) is installed on the lower part of the inner wall of the box (1) and a water collection trough (13) is provided; A water-blocking ring (14) is set above the water collection plate (12) and bends toward the inner wall of the box (1); The water collection plate (12) is connected to the condensate collection tank (18) via a pipe.

9. A cable branch box with shock absorption and drainage function according to claim 1, characterized in that, The support plate (2) is connected to the housing (1) by a damping spring (9). The elastic coefficient of the damping spring (9) is matched with the damping characteristics of the hydraulic cylinder (3) to form a graded damping system.

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