Cable branch box with anti-interior-wall-condensation structure

Abstract

The application relates to a cable branch box with an anti-interior-wall-condensation structure and relates to the technical field of cable branch boxes. The cable branch box comprises a lower box body, the upper end of the lower box body is provided with an upper box body, the two sides of the upper box body are hingedly provided with box covers, the upper end of the upper box body is provided with a gas guide cover, the upper end of the gas guide cover is communicated with a heat conduction pipe, the heat conduction pipe penetrates through the upper box body, the heat conduction pipe is arranged in an S shape, the lower end of the heat conduction pipe penetrates through the upper box body, the application forms active circulation airflow with the help of a heat dissipation fan, dust impurities are intercepted through a filter plate, and water vapor is adsorbed through a moisture absorption plate. The driving rod of the application continuously rotates in a circle with the eccentric shaft as the center. In the rotating process, the rod body intermittently pushes the stress shaft of the side wall of the damping bearing, so that the stress shaft drives the inner ring of the damping bearing and the moisture absorption plate to rotate. When the driving rod rotates to the eccentric distal end, the rod body is not long enough to contact the stress shaft, thereby forming intermittent stop of the rotation of the moisture absorption plate, and the eccentric intermittent motion is relied on to cyclically replace the moisture absorption operation area.

Description

Technical Field

[0001] This invention relates to the field of cable branch box technology, specifically to a cable branch box with an anti-condensation structure on the inner wall. Background Technology

[0002] Cable distribution boxes mainly consist of a box shell, built-in cable connectors, and terminals. This equipment is widely used in outdoor power distribution network line transfer scenarios. Outdoor day and night temperature differences and air humidity changes will continuously change the environmental conditions inside the box. At present, conventional cable distribution boxes are mostly equipped with simple ventilation or static moisture absorption structures, relying on natural air convection and moisture-absorbing materials to complete the moisture treatment inside the box. This is the most common implementation method for preventing condensation in cable distribution boxes under complex outdoor temperature and humidity scenarios at present.

[0003] In outdoor conditions, the temperature difference between the inside and outside of the enclosure is large, and the ambient air humidity is high. The combination of these two conditions easily leads to condensation inside the enclosure. Existing anti-condensation structures have several limitations in controlling moisture: First, outdoor air carries dust and lint, which will accumulate on the surface of ventilation and filter components over time, reducing airflow space and decreasing the air exchange efficiency inside the enclosure. Second, the moisture-absorbing material is in continuous contact with humid air, and once the area is saturated with moisture, the overall moisture absorption effect will decrease significantly. The humidity regulation effect inside the enclosure is difficult to maintain in the long term, and the continuous accumulation of condensation on the inner wall can accelerate the aging of the insulation layer of internal electrical components, increasing the probability of circuit contact failures.

[0004] To address the aforementioned issues, innovative design based on existing methods is urgently needed. Summary of the Invention

[0005] The purpose of this invention is to provide a cable branch box with an anti-condensation structure on the inner wall, in order to solve the problems mentioned in the background art, such as the moisture-absorbing plate being in continuous contact with humid air, the overall moisture absorption effect decreasing significantly after the area is saturated with water vapor; the humidity regulation effect inside the box is difficult to maintain for a long time; and the continuous accumulation of condensation on the inner wall easily accelerates the aging of the insulation layer of the internal electrical components. The technical solution of this invention addresses the problem that the existing technical solutions are too simplistic and provides a solution that is significantly different from the existing technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a cable branch box with an anti-condensation structure on the inner wall, comprising a lower box body, an upper box body installed on the upper end of the lower box body, box covers hinged to both sides of the upper box body, an air guide hood installed on the upper end of the upper box body, a heat conduction pipe connected to the upper end of the air guide hood, the heat conduction pipe penetrating the upper box body and being S-shaped, the lower end of the heat conduction pipe penetrating the upper box body, and the lower port of the heat conduction pipe being opposite to the inner wall of the lower box body; A damping bearing is installed at the lower end of the heat pipe in the lower housing. The lower end of the heat pipe faces the damping bearing. An outer expansion cylinder is connected to the non-rotatable outer ring sidewall of the damping bearing. A chamber plate is vertically connected to the inner wall of the outer expansion cylinder. The chamber plate divides the outer expansion cylinder into a moisture absorption chamber and a drying chamber. A filter plate is installed on the chamber plate. A moisture absorption plate is connected to the rotatable inner ring of the damping bearing. The damping bearing and the filter plate are each equipped with an adjustment component for adjusting the moisture absorption area of ​​the moisture absorption plate.

[0007] Preferably, the adjustment assembly includes a first force shaft and a second force shaft disposed on the damping bearing, the first force shaft and the second force shaft being symmetrically mounted on the rotatable inner ring sidewall of the damping bearing.

[0008] Preferably, the adjustment assembly further includes a cooling fan installed on the inner wall of one side of the filter plate, a first rotating shaft is mounted on the axis of one side of the cooling fan, and a drive gear is mounted on the outer wall of the first rotating shaft.

[0009] Preferably, a second rotating shaft is provided on one side of the drive gear, the second rotating shaft is rotatably connected to the filter plate, and the end of the second rotating shaft passes through the filter plate.

[0010] Preferably, a driven gear is installed on the outer wall of the second rotating shaft, the driven gear meshing with the driving gear, and a driving rod is connected to the end of the second rotating shaft, the driving rod corresponding to the first force shaft and the second force shaft.

[0011] Preferably, the drive rod and the outer wall of the outer expansion cylinder are respectively provided with dust displacement mechanisms for displacing dust on the surface of the filter plate. The dust displacement mechanism includes a slide groove and a guide frame.

[0012] Preferably, the slide groove is formed on one side of the drive rod, the guide frame is installed on one side of the outer expansion cylinder, the guide frame is composed of multiple arc-shaped frames, and the guide frame is arc-shaped as a whole, and a return spring is connected to one side of the slide groove.

[0013] Preferably, one end of the reset spring is connected to a slider, one side of the slider is connected to a scraper, one side of the scraper is connected to an extension shaft, and the outer wall of the extension shaft corresponds to one side of the guide frame.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention utilizes a cooling fan to create an active circulating airflow. Dust and impurities are intercepted by a filter plate, and moisture is absorbed by a moisture-absorbing plate. The drive rod of this invention continuously rotates in a circle around an eccentric shaft. During the rotation, the rod intermittently pushes against the force shaft on the side wall of the damping bearing, causing the force shaft to drive the inner ring of the damping bearing and the moisture-absorbing plate to rotate. When the drive rod rotates to the far end of the eccentricity, the rod length is insufficient to contact the force shaft, thus creating an intermittent pause in the rotation of the moisture-absorbing plate. This intermittent eccentric motion is used to cyclically change the moisture-absorbing area. At the same time, the waste heat generated by the electrical operation inside the chamber is discharged through an S-shaped heat pipe, and the hot airflow is directed to the saturated moisture-absorbing area during the pause phase of the moisture-absorbing plate to complete the drying and regeneration. This continuously and stably regulates the humidity inside the chamber, improves the problem of condensation on the inner wall, reduces the corrosion of electrical components by moisture, and extends the service life of the power distribution components inside the chamber.

[0015] 2. This invention utilizes a partition plate to create a bidirectional airflow field, separating the airflow into the moisture absorption chamber and the airflow into the drying chamber. During the circular motion of the drive rod, the scraper scrapes the dust along the filter plate surface. The extension shaft at the side end of the scraper slides along a multi-segment arc-shaped guide frame. The arc-shaped section of the guide frame laterally compresses the extension shaft, compressing the reset spring to retract the scraper. After the compression is released, the spring rebounds, causing the scraper to reset, completing the automatic extension and retraction swing of the scraper. When the scraper rotates to the drying chamber area, the airflow blown outward from the drying chamber uniformly discharges the dust. There is no need for manual opening of the cover to clean the filter components, ensuring long-term stable air circulation and dehumidification performance of the box, and reducing the frequency of on-site inspection and maintenance of outdoor cable branch boxes. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a disassembly diagram of the damping bearing and lower housing structure of the present invention; Figure 3 This is a schematic diagram of the damping bearing and the outer expansion cylinder structure of the present invention; Figure 4 This is a disassembly diagram of the damping bearing and the outer expansion cylinder structure of the present invention; Figure 5 This is a schematic diagram of the damping bearing and moisture-absorbing plate structure of the present invention; Figure 6 This is a schematic diagram of the cavity plate structure of the present invention; Figure 7 This is a cross-sectional view of the outer expansion cylinder structure of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of the structure of region C; Figure 9 This is a schematic diagram of the dust displacement mechanism of the present invention; Figure 10 This is a structural disassembly diagram of the dust displacement mechanism of the present invention.

[0017] In the diagram: 1. Lower housing; 2. Upper housing; 3. Housing cover; 4. Air guide hood; 5. Heat pipe; 6. Damping bearing; 7. Outer expansion cylinder; 8. Chamber plate; 9. Filter plate; 10. Moisture absorption plate; 101. First force-bearing shaft; 102. Second force-bearing shaft; 103. Cooling fan; 104. First rotating shaft; 105. Drive gear; 106. Second rotating shaft; 107. Driven gear; 108. Drive rod; 201. Slide groove; 202. Guide frame; 203. Return spring; 204. Slider; 205. Scraper; 206. Extension shaft. Detailed Implementation

[0018] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0019] Please see Figures 1-10 This invention provides a technical solution: a cable branch box with an anti-condensation structure on the inner wall, comprising a lower box body 1, an upper box body 2 mounted on the upper end of the lower box body 1, box covers 3 hinged to both sides of the upper box body 2, an air guide hood 4 mounted on the upper end of the upper box body 2, a heat conduction pipe 5 connected to the upper end of the air guide hood 4, the heat conduction pipe 5 penetrating the upper box body 2, and the heat conduction pipe 5 being S-shaped, the lower end of the heat conduction pipe 5 penetrating the upper box body 2, and the lower end of the heat conduction pipe 5 being opposite to the inner wall of the lower box body 1; the lower box body 1 corresponds to the lower end of the heat conduction pipe 5. A damping bearing 6 is installed, and the lower end of the heat pipe 5 faces the damping bearing 6. The outer ring sidewall of the non-rotatable damping bearing 6 is connected to an outer expansion cylinder 7. The inner wall of the outer expansion cylinder 7 is vertically connected to a chamber plate 8, which divides the outer expansion cylinder 7 into a moisture absorption chamber and a drying chamber, where A is the moisture absorption chamber and B is the drying chamber. A filter plate 9 is installed on the chamber plate 8, and a moisture absorption plate 10 is connected to the rotatable inner ring of the damping bearing 6. Adjustment components are provided on the damping bearing 6 and the filter plate 9 to adjust the moisture absorption area of ​​the moisture absorption plate 10.

[0020] During use, a ventilation device can be used to draw in external air from the lower chamber 1 and upper chamber 2. The air passes through the filter plate 9 and the moisture-absorbing plate 10 in sequence before entering the lower chamber 1. When the air flows through the filter plate 9, the filter plate 9 intercepts and adsorbs dust, lint and other impurities mixed in the air, preventing impurities from entering the chamber and attaching to the cable components. The air continues to circulate and contacts the moisture-absorbing plate 10, which adsorbs free water vapor in the air, reducing the moisture content of the air inside the chamber and reducing water vapor accumulation. This can prevent condensation on the inner wall of the chamber caused by temperature differences and humidity from the source.

[0021] In one embodiment of the present invention, the adjustment assembly includes a first force shaft 101 and a second force shaft 102 disposed on the damping bearing 6. The first force shaft 101 and the second force shaft 102 are symmetrically mounted on the rotatable inner ring sidewall of the damping bearing 6. The adjustment assembly also includes a cooling fan 103 mounted on the inner wall of one side of the filter plate 9. A first rotating shaft 104 is mounted on the axis of one side of the cooling fan 103, and a drive gear 105 is mounted on the outer wall of the first rotating shaft 104. A second rotating shaft 106 is provided on one side of the drive gear 105. The second rotating shaft 106 is rotatably connected to the filter plate 9, and the end of the second rotating shaft 106 passes through the filter plate 9. A driven gear 107 is installed on the outer wall of the second rotating shaft 106. The driven gear 107 meshes with the drive gear 105. A drive rod 108 is connected to the end of the second rotating shaft 106. The drive rod 108 corresponds to the first force shaft 101 and the second force shaft 102. In use, the cooling fan 103 is started. When the cooling fan 103 rotates, it drives the first rotating shaft 104 to rotate. The first rotating shaft 104 drives the drive gear 105 to rotate. The drive gear 105 meshes with the driven gear 107 and the transmission ratio is matched through the gear transmission. The rotating driven gear 107 drives the second rotating shaft 106 to rotate. The second rotating shaft 106 drives the drive rod 108 to continuously rotate in a circle around the second rotating shaft 106. During the rotation of the drive rod 108, the end of the rod first contacts and presses the first force shaft 101. The first force shaft 101 is fixed to the rotatable inner ring side wall of the damping bearing 6. After being subjected to force, it drives the inner ring of the damping bearing 6 to rotate as a whole. The inner ring of the damping bearing 6 then drives the moisture absorption plate 10 to rotate, changing the relative position of the moisture absorption plate 10 and the lower port of the heat pipe 5, and rotating the saturated area that has completed moisture absorption to the position of the lower port of the heat pipe 5. As the drive rod 108 continues to rotate, the first force shaft 101 rotates to the initial position of the second force shaft 102, and the second force shaft 102 rotates to the original initial position of the first force shaft 101. The second rotating shaft 106 is eccentrically arranged relative to the damping bearing 6. The length of the drive rod 108 itself is fixed. At this time, the length of the end of the drive rod 108 is insufficient, and it cannot continuously squeeze the first force shaft 101. The drive rod 108 enters a no-load idling state, forming an intermittent stop in the rotation of the moisture-absorbing plate 10. During the intermittent pause phase, the saturated wet area of ​​the moisture-absorbing plate 10 faces the lower port of the heat-conducting pipe 5, while the dry area that has not absorbed moisture is switched to the airflow channel of the moisture-absorbing chamber. The heat accumulated by the electrical operation inside the chamber is channeled into the S-shaped heat-conducting pipe 5 through the air guide hood 4, and the hot airflow is discharged from the lower port of the heat-conducting pipe 5 to continuously flush the saturated wet area of ​​the moisture-absorbing plate 10, thus completing the drying and regeneration of the moisture-absorbing plate 10. The drive rod 108 continues to rotate in a circular motion, and the end of the rod presses the second force shaft 102 again. The entire process of rotation, intermittent pause, moisture absorption, and hot air drying is repeated to achieve uninterrupted cyclic switching of the moisture absorption area of ​​the moisture absorption plate 10, continuously absorbing water vapor in the box and preventing condensation on the inner wall of the box.

[0022] In one embodiment of the present invention, the drive rod 108 and the outer wall of the outer expansion cylinder 7 are respectively provided with dust displacement mechanisms for displacing dust on the surface of the filter plate 9. The dust displacement mechanism includes a slide groove 201 and a guide frame 202. The slide groove 201 is opened on one side of the drive rod 108, and the guide frame 202 is installed on one side of the outer expansion cylinder 7. The guide frame 202 is composed of multiple arc-shaped frames and is arc-shaped in its entirety. A return spring 203 is connected to one side of the slide groove 201. A slider 204 is connected to one end of the return spring 203. A scraper 205 is connected to one side of the slider 204. An extension shaft 206 is connected to one side of the scraper 205. The outer wall of the extension shaft 206 corresponds to one side of the guide frame 202. During the rotation of the drive rod 108, when the extension shaft 206 moves to the moisture absorption chamber, the guide frame 202 has no lateral compression limit, and the scraper 205 remains in contact with the surface of the filter plate 9, sliding and scraping at a uniform speed to remove dust and lint accumulated on the surface of the filter plate 9. When the drive rod 108 drives the extension shaft 206 to rotate to the arc-shaped limit section of the guide frame 202 corresponding to the drying chamber, the multi-segment arc-shaped guide frame 202 generates a continuous lateral compression thrust on the extension shaft 206. The extension shaft 206 drives the scraper 205 and the slider 204 along the slide groove 20. 1. The inward sliding compression of the return spring 203 causes the spring to release its elasticity when the compression is lost, pushing the slider 204, scraper 205, and extension shaft 206 outward along the slide groove 201 to reset. The scraper 205 swings back and forth to continuously clean the plate surface after it shifts and scrapes off the dust. Under the continuous action of the airflow blown outward from the drying chamber, the dust and impurities scraped by the scraper 205 are blown outward from the outer expansion cylinder 7, preventing dust accumulation from clogging the airflow channel of the filter plate 9, maintaining the dehumidification and anti-condensation performance of the chamber for a long time, and reducing the frequency of manual opening, cleaning and maintenance.

[0023] Working principle: When the cooling fan 103 is turned on, the cooling fan 103 rotates and generates negative pressure suction, which draws in the outside air of the lower box 1 and the upper box 2. The air passes through the filter plate 9 and the moisture absorption plate 10 in sequence before entering the lower box 1. The filter plate 9 adsorbs dust and lint in the air, while the moisture absorption plate 10 adsorbs moisture in the air, reducing the accumulation of moisture inside the box and inhibiting condensation on the inner wall of the box from the source. When the cooling fan 103 rotates, it drives the first rotating shaft 104 to rotate, which in turn drives the drive gear 105 to rotate. The drive gear 105 meshes with the driven gear 107, reducing the transmission ratio through gear transmission. The rotating driven gear 107 then drives the second rotating shaft 106 to rotate. The second rotating shaft 106 drives the drive rod 108 to rotate, and the drive rod 108 continuously rotates in a circular motion around the second rotating shaft 106, completing the power transmission from the fan to the drive rod 108. During the circular rotation of the drive rod 108, the end of the rod first contacts and presses the first force-bearing shaft 101. The first force-bearing shaft 101 is fixed to the rotatable inner ring sidewall of the damping bearing 6. After being subjected to force, it can drive the inner ring of the damping bearing 6 to rotate as a whole. The inner ring of the damping bearing 6 also drives the moisture-absorbing plate 10 to rotate. By rotating, the relative position of the moisture-absorbing plate 10 and the lower port of the heat pipe 5 is changed, and the position after moisture absorption is switched to the lower port of the heat pipe 5. As the drive rod 108 continues to rotate, the first force shaft 101 rotates to the initial position of the second force shaft 102, and the second force shaft 102 rotates to the original initial position of the first force shaft 101. Because the second rotating shaft 106 is eccentrically arranged relative to the damping bearing 6, and the length of the drive rod 108 remains unchanged, during the rotation, the end of the drive rod 108 will be too short to continue to contact and squeeze the first force shaft 101, and the drive rod 108 will enter a no-load idling state, forming an intermittent pause in the rotation of the moisture-absorbing plate 10. During the intermittent pause, the saturated wet area of ​​the moisture-absorbing plate 10 rotates to the lower port of the heat-conducting pipe 5, and the dry area that has not absorbed water vapor switches to the airflow channel of the moisture-absorbing chamber. The heat accumulated inside the box flows into the S-shaped heat-conducting pipe 5 through the air guide hood 4, and is discharged from the lower port of the S-shaped heat-conducting pipe 5, continuously rinsing the saturated wet area of ​​the moisture-absorbing plate 10, completing the drying and regeneration of the moisture-absorbing plate 10. The drive rod 108 continues to rotate in a circular motion, and the end of the rod presses against the second force shaft 102 again, repeating the above rotation, pause, moisture absorption, and drying process to achieve the cyclical switching of the moisture absorption area of ​​the moisture absorption plate 10, continuously absorbing moisture in the box and preventing condensation from forming on the inner wall of the box; the airflow directions inside the moisture absorption chamber and the drying chamber formed by the partition plate 8 are completely opposite: the moisture absorption chamber relies on the suction of the cooling fan 103 to continuously draw in humid air and complete the moisture adsorption; the drying chamber relies on the hot airflow discharged by the heat pipe 5 to form an outward blowing effect, drying the moisture absorption plate 10 on the one hand, and providing airflow power for dust cleaning on the other hand. The bidirectional airflow improves the overall dehumidification efficiency. When the drive rod 108 rotates in a circular motion, when the extension shaft 206 moves to the moisture absorption chamber section, the scraper 205 scrapes against the surface of the filter plate 9 at a uniform speed, scraping off the dust and lint adhering to the surface of the filter plate 9. When the drive rod 108 drives the extension shaft 206 to rotate to the arc-shaped limiting section of the guide frame 202 corresponding to the drying chamber, the guide frame 202 generates a lateral squeezing force on the extension shaft 206. Since the guide frame 202 is composed of multiple arc-shaped frames, the extension shaft 206, which is subjected to multiple segments of squeezing, drives the scraper 205 and the slider 204 to slide repeatedly along the slide groove 201. The return spring 203 provides the return force required for the sliding. By using the airflow blown out of the drying chamber and the reciprocating sliding, the dust that has been displaced on the surface of the scraper 205 is discharged from the outer expansion cylinder 7, avoiding the filter plate 9 from being blocked, causing poor airflow and reduced dehumidification capacity.

[0024] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A cable branch box with an anti-condensation structure on the inner wall, comprising a lower box body (1), an upper box body (2) mounted on the upper end of the lower box body (1), and box covers (3) hinged to both sides of the upper box body (2), characterized in that: An air guide hood (4) is installed on the upper end of the upper box (2). A heat pipe (5) is connected to the upper end of the air guide hood (4). The heat pipe (5) penetrates the upper box (2) and is arranged in an S-shape. The lower end of the heat pipe (5) penetrates the upper box (2) and the lower end of the heat pipe (5) is arranged opposite to the inner wall of the lower box (1). The lower housing (1) is equipped with a damping bearing (6) at the lower port of the heat pipe (5). The lower port of the heat pipe (5) faces the damping bearing (6). The outer ring sidewall of the damping bearing (6) is connected to an outer expansion cylinder (7). The inner wall of the outer expansion cylinder (7) is vertically connected to a partition plate (8). The partition plate (8) divides the outer expansion cylinder (7) into a moisture absorption chamber and a drying chamber. A filter plate (9) is installed on the partition plate (8). The inner ring of the damping bearing (6) is connected to a moisture absorption plate (10). The damping bearing (6) and the filter plate (9) are respectively provided with adjustment components for adjusting the moisture absorption area of ​​the moisture absorption plate (10).

2. A cable branch box with an anti-condensation structure on the inner wall according to claim 1, characterized in that: The adjustment assembly includes a first force shaft (101) and a second force shaft (102) disposed on the damping bearing (6). The first force shaft (101) and the second force shaft (102) are symmetrically mounted on the rotatable inner ring sidewall of the damping bearing (6).

3. A cable branch box with an anti-condensation structure on the inner wall according to claim 2, characterized in that: The adjustment assembly also includes a cooling fan (103) installed on the inner wall of one side of the filter plate (9), a first rotating shaft (104) is installed on the axis of one side of the cooling fan (103), and a drive gear (105) is installed on the outer wall of the first rotating shaft (104).

4. A cable branch box with an anti-condensation structure on the inner wall according to claim 3, characterized in that: A second rotating shaft (106) is provided on one side of the drive gear (105). The second rotating shaft (106) is rotatably connected to the filter plate (9), and the end of the second rotating shaft (106) passes through the filter plate (9).

5. A cable branch box with an anti-condensation structure on the inner wall according to claim 4, characterized in that: A driven gear (107) is installed on the outer wall of the second rotating shaft (106). The driven gear (107) meshes with the drive gear (105). A drive rod (108) is connected to the end of the second rotating shaft (106). The drive rod (108) corresponds to the first force shaft (101) and the second force shaft (102).

6. A cable branch box with an anti-condensation structure on the inner wall according to claim 5, characterized in that: The drive rod (108) and the outer wall of the outer expansion cylinder (7) are respectively provided with dust displacement mechanisms for displacing dust on the surface of the filter plate (9). The dust displacement mechanism includes a slide (201) and a guide frame (202).

7. A cable branch box with an anti-condensation structure on the inner wall according to claim 6, characterized in that: The slide groove (201) is opened on one side of the drive rod (108), the guide frame (202) is installed on one side of the outer expansion cylinder (7), the guide frame (202) is composed of multiple arc-shaped frames and the guide frame (202) is arc-shaped as a whole, and a return spring (203) is connected to one side of the slide groove (201).

8. A cable branch box with an anti-condensation structure on the inner wall according to claim 7, characterized in that: One end of the reset spring (203) is connected to a slider (204), one side of the slider (204) is connected to a scraper (205), one side of the scraper (205) is connected to an extension shaft (206), and the outer wall of the extension shaft (206) corresponds to one side of the guide frame (202).

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