Frozen soil roadbed protection device

Abstract

The frozen soil roadbed protection device comprises a hot rod body, the hot rod body is provided with a heat absorption section and a heat dissipation section connected to the top end of the heat absorption section, the hot rod body is sleeved with a hollow heat dissipation cover at the bottom end of the heat dissipation section, and a plurality of heat dissipation fins arranged at intervals are arranged at the top end of the heat dissipation cover; the heat dissipation section of the hot rod body is further sleeved with an air bag located below the heat dissipation cover. According to the invention, when external air is high, especially sunlight is strong, a large amount of heat is still attached to or absorbed by the surface of the heat dissipation section, the arrangement of the inflated air bag and the heat dissipation fins can effectively prevent the heat dissipation section from reversely transmitting the heat to the ground and the underground, and the heat can be re-dissipated into the air from the heat dissipation fins, so that the heat dissipation efficiency is improved. Therefore, the heat dissipation efficiency of the embodiment can be effectively ensured.

Description

Technical Field

[0001] The invention relates to the technical field of roadbed protection, in particular to a frozen soil roadbed protection device. Background Art

[0002] Frozen soil roadbed protection devices are mainly used to protect sections of roads in frozen soil areas to prevent the frozen soil roadbed from thawing and sinking. At present, most of them use heat rod technology to protect frozen soil roadbeds. The heat rod usually has a heat absorption section and a heat dissipation section connected to the top of the heat absorption section. Through the evaporation and condensation process of liquid ammonia inside, it can achieve efficient heat transfer and dissipation, which can effectively reduce the temperature of the roadbed and frozen soil, thereby maintaining the stability of the frozen soil. However, because the heat rod has a high efficiency in heat conduction, when the external air temperature is high, especially when the sunlight is strong, the heat rod also has the possibility of transferring heat back to the roadbed, which will affect the protection effect. In addition, when exposed to wind and rain for a long time outdoors, a large gap is likely to appear at the connection between the heat rod and the frozen soil. Through this gap, rainwater and other impurities can easily be washed in, thereby affecting the stability and heat absorption effect of the heat rod. Summary of the invention

[0003] The purpose of the present invention is to provide a frozen soil roadbed protection device to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: comprising a heat rod body, the heat rod body having a heat absorbing section and a heat dissipating section connected to the top of the heat absorbing section, the heat rod body having a hollow heat dissipating cover sleeved at the bottom end of the heat dissipating section, and a plurality of heat dissipating fins arranged at intervals at the top of the heat dissipating cover;

[0005] The heat rod body is also sleeved with an air bag located below the heat dissipation cover on the heat dissipation section.

[0006] Furthermore, it also includes a liquid storage tank and a circulation pump connected to the heat dissipation cover;

[0007] A liquid inlet pipe is connected between the circulation pump and the liquid storage tank;

[0008] A liquid return pipe is connected between the liquid storage tank and the heat dissipation cover.

[0009] Furthermore, the liquid return pipe is also provided with a cooling mechanism capable of acting on the heat dissipation fins;

[0010] The cooling mechanism comprises a cooling box, the inner side wall of the cooling box is rotatably connected with a cooling fan, and a power mechanism for driving the cooling fan to rotate is arranged in the cooling box.

[0011] Furthermore, a mounting port connected to the liquid return pipe is provided on the cooling box, and the power mechanism includes a rotating rod rotatably connected in the cooling box and connected to the cooling fan, and a plurality of power baffles facing the liquid return pipe are connected to the annular surface of the rotating rod.

[0012] Furthermore, the airbag is also connected to an inflation mechanism;

[0013] The inflation mechanism includes an air storage tank and a fixed tank sleeved on the air storage tank, an air intake pump and an air inflation pump are arranged in the fixed tank, an output end of the air intake pump and an input end of the air inflation pump are both connected to the air storage tank, an input end of the air intake pump is connected to an air intake pipe, a first one-way valve is arranged in the air intake pipe, the air inflation pump is connected to an inflation pipe, a second one-way valve is arranged in the inflation pipe, and a terminal end of the inflation pipe is connected to a side wall of the airbag.

[0014] Furthermore, the heat rod body is connected to a photovoltaic component at the top of the heat dissipation section.

[0015] Further, the photovoltaic assembly includes a first photovoltaic panel, a partition plate is arranged in the middle of the first photovoltaic panel, and second photovoltaic panels are rotatably connected to both sides of the first photovoltaic panel, and the two second photovoltaic panels can be inverted and covered on the first photovoltaic panel;

[0016] The photovoltaic assembly also includes a driving mechanism, which can synchronously drive the two second photovoltaic panels to rotate outward relative to the first photovoltaic panel.

[0017] Furthermore, both sides of the first photovoltaic panel are provided with a connecting ear group, each connecting ear group includes two symmetrically arranged connecting ears, the connecting ears are rotatably connected to a rotating shaft, and the rotating shaft is linked to a rotating ear located between the two connecting ears and connected to the second photovoltaic panel;

[0018] The driving mechanism includes a lifting plate and a driving mechanism for driving the lifting plate to move up and down;

[0019] Both ends of the lifting plate are connected with lifting linkage components, which include a connecting frame, the end of the connecting frame is connected with a mounting plate, the inner end of the mounting plate is installed with a rack, and the lifting linkage component also includes a gear sleeved on the rotating shaft and meshing with the rack.

[0020] Furthermore, the lifting plate is provided with two symmetrically arranged slide grooves, the slide grooves comprising an oblique groove and a vertical groove connected end to end;

[0021] It also includes a cleaning mechanism, which includes two groups of symmetrically arranged cleaning components, and the cleaning components have sliding pins that can be slidably matched with the sliding grooves;

[0022] The cleaning assembly includes a cleaning plate located between the first photovoltaic panel and the second photovoltaic panel, brushes are provided at the top and bottom ends of the cleaning plate, the inner end of the cleaning plate is fixedly connected to the top and bottom of the cleaning plate through a telescopic cover, and the side walls of each cleaning plate are fixedly connected to a telescopic cover connected to the partition plate.

[0023] Furthermore, it also includes a sliding limit mechanism;

[0024] The sliding limit mechanism comprises two limit seats respectively connected to the two ends of the first photovoltaic panel, a same guide rod is connected between the two limit seats, and each of the cleaning plates is connected to a slider which is sleeved on the guide rod and can slide relative to the guide rod;

[0025] The sliding pin is connected to the sliding block.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. In the present invention, when the outside air is high, especially when the sunlight is strong, the surface of the heat dissipation section will still adhere to or absorb a large amount of heat. The inflated airbag combined with the setting of the heat dissipation fins can effectively prevent the heat dissipation section from transferring the aforementioned heat back to the ground and underground. The aforementioned heat can be re-dissipated into the air from the heat dissipation fins, which can effectively ensure the heat dissipation efficiency of this embodiment. In addition, after the airbag is inflated, it will be against the surface of the frozen soil, and the connection between the heat rod body and the frozen soil can be blocked and sealed. In addition to hot air, it can also prevent rainwater or other impurities from entering the foundation from the connection, reduce the erosion of rainwater, and make the heat rod body more stable and reliable, ensuring a good protection effect.

[0028] 2. In the present invention, by setting up the photovoltaic components, power can be provided for each active functional structure; by setting up the driving mechanism, when there is sufficient sunshine, the lifting plate can be driven downward by the pushing mechanism, so that the first photovoltaic panel and the second photovoltaic panel are in an unfolded state to fully receive solar energy; when there is no sunshine, the lifting plate is moved upward by the pushing mechanism, thereby driving the two second photovoltaic panels to reset to the storage state, so that impurities can be prevented from accumulating on the working surfaces of the first photovoltaic panel and the second photovoltaic panel. At the same time, by the cooperation of the sliding pin and the lifting plate, the two cleaning components can be driven to be in a corresponding state of moving toward or away from each other, so that the cleaning work of the working surfaces of the first photovoltaic panel and the second photovoltaic panel can be realized without affecting the charging work of the first photovoltaic panel and the second photovoltaic panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the use state of the present invention;

[0030] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 3 It is a partial cross-sectional structural schematic diagram of the cooling box in the present invention;

[0032] Figure 4 for Figure 1 A schematic diagram of the enlarged structure at B in the middle;

[0033] Figure 5 for Figure 3 Schematic diagram of the enlarged structure at D in the middle;

[0034] Figure 6 It is a structural schematic diagram of the inflation mechanism in the present invention;

[0035] Figure 7 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0036] Figure 8 for Figure 7 Schematic diagram of the enlarged structure at E in the middle;

[0037] Fig. 9 for Figure 8 Schematic diagram of the enlarged structure at G in the middle;

[0038] Fig.10 for Figure 2 Schematic diagram of the enlarged structure at C in the middle;

[0039] Fig.11 for Fig.10 Schematic diagram of the enlarged structure at F in the middle.

[0040] In the figure: 1. hot rod body; 2. sliding limit mechanism; 201. limit seat; 202. guide rod; 203. slider; 3. driving mechanism; 301. L-shaped plate; 302. pushing mechanism; 303. lifting plate; 304. inclined groove; 305. sliding pin; 306. vertical groove; 4. lifting linkage assembly; 401. gear; 402. connecting frame; 403. mounting plate; 404. rack; 5. cooling mechanism; 501. mounting port; 502. cooling box; 503. cooling fan; 6. power mechanism; 601. rotating rod; 602. power baffle; 701. support plate; 702. support ring; 8. buffer mechanism; 801. connecting block; 802. T-shaped guide rod; 803. buffer spring; 9. traction mechanism; 9 01. traction block; 902. traction rope; 10. limiting mechanism; 1001. support seat; 1002. rotating pin; 1003. guide wheel; 11. first photovoltaic panel; 12. second photovoltaic panel; 13. partition plate; 14. heat dissipation cover; 15. liquid storage tank; 16. heat dissipation fins; 17. circulation pump; 18. liquid inlet pipe; 19. liquid return pipe; 20. cleaning mechanism; 2001. cleaning plate; 2002. brush; 2003. telescopic cover; 21. air bag; 22. inflation mechanism; 2201. support frame; 2202. fixed tank; 2203. air inlet pipe; 2204. inflation pipe; 2205. air storage tank; 2206. air inlet pump; 2207. inflation pump; 23. connecting ear; 24. rotating shaft; 25. rotating ear. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] See also Figure 1-Figure 11 The present invention provides a technical solution: a frozen soil roadbed protection device, comprising a heat rod body 1, the heat rod body 1 having a heat absorbing section and a heat dissipation section connected to the top of the heat absorbing section, characterized in that: the heat rod body 1 is sleeved with a hollow heat dissipation cover 14 at the bottom end of the heat dissipation section, and the top of the heat dissipation cover 14 is provided with a plurality of heat dissipation fins 16 arranged at intervals;

[0043] The heat rod body 1 is also sleeved with an air bag 21 located below the heat dissipation cover 14 on the heat dissipation section.

[0044] After the present embodiment is assembled, the heat absorption section is buried underground, the heat dissipation section is exposed above the ground, the airbag is in an inflated state, the airbag 21 can abut against the ground, and the heat dissipation fins 16 are located above the airbag 21 .

[0045] When this embodiment is used, the working principle of the heat rod body 1 is that the liquid ammonia arranged therein will vaporize and rise after absorbing the heat of the frozen soil underground, and bring the heat to the upper heat dissipation section for heat dissipation operation. When the heat is taken away by the air, the liquid ammonia cools and turns into liquid again, and flows back to the heat absorption section to continue working. However, when the outside air temperature is high, especially when the sunlight is strong, a large amount of heat will still be attached to or absorbed by the surface of the heat dissipation section. The inflated airbag 21 combined with the setting of the heat dissipation fins 16 can effectively prevent the heat dissipation section from transferring the aforementioned heat in reverse to the ground and underground, and the aforementioned heat can be re-dissipated from the heat dissipation fins 16 to the air, which can effectively ensure the heat dissipation efficiency of this embodiment.

[0046] In addition, after the airbag 21 is inflated, it will be against the surface of the frozen soil, which can seal the connection between the heat rod body 1 and the frozen soil. In addition to hot air, it can also prevent rainwater or other impurities from entering the foundation from the connection, reduce the erosion of rainwater, and make the heat rod body 1 more stable and reliable, ensuring a good protective effect.

[0047] Preferably, it also includes a liquid storage tank 15 and a circulation pump 17 connected to the heat dissipation cover 14;

[0048] A liquid inlet pipe 18 is connected between the circulation pump 17 and the liquid storage tank 15;

[0049] A liquid return pipe 19 is connected between the liquid storage tank 15 and the heat dissipation cover 14 .

[0050] In this embodiment, in order to quickly cool down the heat dissipation cover 14, a liquid storage tank 15 can be provided outside the heat rod body 1. The liquid storage tank 15 can be buried underground and provided with a special control system to control it, such as lower temperature or dosage. One liquid storage tank 15 can also be connected to multiple heat rod bodies 1, not limited to one heat rod body 1.

[0051] When used, the circulating pump 17 is started, and a circulating flow can be formed in the liquid inlet pipe 18, the heat dissipation cover 14, and the liquid return pipe 19, and the heat dissipation cover 14 can be quickly cooled by the heat exchange principle. The cooling medium in the liquid storage tank 15 can be oil or other safe cooling medium.

[0052] This embodiment is a special remedy for extreme weather.

[0053] Preferably, the liquid return pipe 19 is also provided with a cooling mechanism 5 capable of acting on the heat dissipation fins 16;

[0054] The cooling mechanism 5 comprises a cooling box 502 , the inner side wall of the cooling box 502 is rotatably connected to a cooling fan 503 , and a power mechanism 6 for driving the cooling fan 503 to rotate is arranged in the cooling box 502 .

[0055] In this embodiment, the power mechanism 6 can be a motor, and starting the motor can drive the cooling fan 503 to rotate, thereby cooling the heat dissipation cover 14 in the form of airflow.

[0056] Preferably, the cooling box 502 is provided with an installation port 501 connected to the return liquid pipe 19, and the power mechanism 6 includes a rotating rod 601 rotatably connected in the cooling box 502 and connected to the cooling fan 503, and a plurality of power baffles 602 that can face the return liquid pipe 19 are connected to the annular surface of the rotating rod 601.

[0057] In this embodiment, when cooling medium circulates in the liquid return pipe 19 , the power baffle 602 drives the rotating rod 601 to rotate, and further drives the cooling fan 503 to rotate to cool the heat dissipation cover 14 .

[0058] Preferably, the airbag 21 is also connected to an inflation mechanism 22;

[0059] The inflation mechanism 22 includes an air storage tank 2205 and a fixed tank 2202 sleeved on the air storage tank 2205, an air intake pump 2206 and an air inflation pump 2207 are arranged in the fixed tank 2202, the output end of the air intake pump 2206 and the input end of the air inflation pump 2207 are both connected to the air storage tank 2205, the input end of the air intake pump 2206 is connected to the air intake pipe 2203, the air intake pipe 2203 is provided with a first one-way valve, the air inflation pump 2207 is connected to the inflation pipe 2204, the inflation pipe 2204 is provided with a second one-way valve, and the end of the inflation pipe 2204 is connected to the side wall of the airbag 21.

[0060] In this embodiment, the first one-way valve is opened, the second one-way valve is closed, and the air intake pump 2206 is started to inject gas into the air storage tank 2205; the second one-way valve is opened, the first one-way valve is closed, and the inflation pump 2207 is started to inflate the airbag 21.

[0061] Through this embodiment, the airbag 21 can be inflated to deal with the problem of accidental leakage of the airbag 21.

[0062] In order to achieve the installation of the gas storage tank 2205 and the fixed tank 2202, a support frame 2201 for supporting the fixed tank 2202 can be connected to the side wall of the heat dissipation cover 14, and a support ring 702 can be sleeved on the heat rod body 1, and the support ring 702 has a support support plate 701 for supporting the gas storage tank 2205.

[0063] When the inflation mechanism 22 is performing an inflation operation, in order to avoid large shaking caused by the airflow movement, the present embodiment is further provided with a buffer mechanism 8, which includes a connecting block 801 connected to the side wall of the heat rod body 1, a T-shaped guide rod 802 is provided between the connecting block 801 and the support ring 702, and a buffer spring 803 is sleeved on the T-shaped guide rod 802.

[0064] Preferably, the heat rod body 1 is connected to a photovoltaic component at the top of the heat dissipation section.

[0065] In this embodiment, the photovoltaic module is used to provide power for each active functional structure.

[0066] Preferably, the photovoltaic assembly comprises a first photovoltaic panel 11, a partition plate 13 is arranged in the middle of the first photovoltaic panel 11, and second photovoltaic panels 12 are rotatably connected to both sides of the first photovoltaic panel 11, and the two second photovoltaic panels 12 can be inverted and covered on the first photovoltaic panel 11;

[0067] The photovoltaic assembly further includes a driving mechanism 3 , which can synchronously drive the two second photovoltaic panels 12 to rotate outward relative to the first photovoltaic panel 11 .

[0068] In this embodiment, when there is sufficient sunlight, the two second photovoltaic panels 12 can be driven to rotate through the driving mechanism 3 and be in an unfolded state, so that solar energy can be utilized, which is more energy-saving and environmentally friendly. In this way, the heat of the heat rod body 1 can also be reduced; when there is no light, the two second photovoltaic panels 12 are driven by the driving mechanism 3 to reset and be reversed on the first photovoltaic panel 11, so that they are in a stored state, which can prevent impurities from accumulating on the working surfaces of the first photovoltaic panel 11 and the second photovoltaic panel 12.

[0069] Preferably, both sides of the first photovoltaic panel 11 are provided with a connecting ear group, each connecting ear group includes two symmetrically arranged connecting ears 23, the connecting ears 23 are rotatably connected to a rotating shaft 24, and the rotating shaft 24 is linked to a rotating ear 25 located between the two connecting ears 23 and connected to the second photovoltaic panel 12;

[0070] The driving mechanism 3 includes a lifting plate 303 and a pushing mechanism 302 for driving the lifting plate 303 to move up and down;

[0071] Both ends of the lifting plate 303 are connected to a lifting linkage assembly 4, which includes a connecting frame 402, the end of the connecting frame 402 is connected to a mounting plate 403, the inner end of the mounting plate 403 is installed with a rack 404, and the lifting linkage assembly 4 also includes a gear 401 that is sleeved on the rotating shaft 24 and meshes with the rack 404.

[0072] In this embodiment, the pushing mechanism 302 can directly use an electric push rod to drive the lifting plate 303 to move up and down; the pushing mechanism 302 can also use a combination of a motor, a screw connected to the motor and a nut tube sleeved on the screw to drive the lifting plate 303 to move up and down. Specifically, the motor is started, the screw rotates, and the nut tube can be driven to drive the lifting plate 303 to move up and down through the thread cooperation of the nut tube and the screw.

[0073] In order to realize the installation of the pushing mechanism, an L-shaped plate 301 for supporting the pushing mechanism may be connected to the bottom of the first photovoltaic panel 11 .

[0074] When this embodiment is used, when the push mechanism 302 drives the lifting plate 303 to move downward, the racks 404 in the two lifting linkage components 4 will also move downward, and the racks 404 cooperate with the gears 401 to drive the two second photovoltaic panels 12 to rotate until they are in the unfolded state. When there is no light, the push mechanism 302 moves the lifting plate 303 upward, thereby driving the two second photovoltaic panels 12 to rotate to the storage state to avoid the accumulation of impurities on their surfaces.

[0075] In order to improve stability, the present embodiment is further provided with a traction mechanism 9, which includes a traction block 901 connected to the bottom end of the lifting plate 303 and an elastic traction rope 902, one end of the traction rope 902 is connected to the traction block 901, and the other end passes through the L-shaped plate 301 and is connected to the support ring 702. In order to ensure the tension of the traction rope 902, a limiting mechanism 10 acting on the traction rope 902 is also provided on the L-shaped plate 301, and the limiting mechanism 10 includes a support seat 1001 connected to the L-shaped plate 301, and the support seat 1001 is connected to a guide wheel 1003 for limiting the traction rope 902 through a rotating pin 1002. When the lifting plate 303 moves up and down under the action of the pushing mechanism 302, the traction rope 902 can play a certain traction role on the lifting plate 303 through its own deformation force.

[0076] Preferably, the lifting plate 303 is provided with two symmetrically arranged slide grooves, the slide grooves comprising an oblique groove 304 and a vertical groove 306 connected end to end;

[0077] It also includes a cleaning mechanism 20, which includes two groups of symmetrically arranged cleaning components, and the cleaning components have sliding pins 305 that can be slidably matched with the sliding groove;

[0078] The cleaning assembly includes a cleaning plate 2001 located between the first photovoltaic panel 11 and the second photovoltaic panel 12, and brushes 2002 are provided at the top and bottom ends of the cleaning plate 2001. The inner end of the cleaning plate 2001 is fixedly connected to the top and bottom of the cleaning plate 2001 via a telescopic cover 2003, and the side walls of each cleaning plate 2001 are fixedly connected to the telescopic cover 2003 connected to the partition plate 13.

[0079] In this embodiment, when the lifting plate 303 moves downward under the action of the pushing mechanism 302, the sliding pin 305 cooperates with the sliding groove, specifically, the sliding pin 305 slides along the inclined groove 304, which will drive the two cleaning components to move toward the direction of the partition plate 13, and the first photovoltaic panel 11 and the second photovoltaic panel 12 can be cleaned by the brush 2002, wherein the telescopic cover 2003 can make way for the movement of the cleaning plate 2001 through its own telescopicity. When the cleaning plate 2001 is located at the extreme position close to the partition plate 13, as the lifting plate 303 continues to move downward, the sliding pin 305 slides with the vertical groove 306, and at this time, the rack 404 meshes with the gear 401, thereby driving the rotating shaft 24 to drive the second photovoltaic panel 12 to rotate, so as to unfold the second photovoltaic panel 12, so that the first photovoltaic panel 11 and the second photovoltaic panel 12 can fully receive solar energy.

[0080] Preferably, it also includes a sliding limiting mechanism 2;

[0081] The sliding limit mechanism 2 comprises two limit seats 201 respectively connected to the two ends of the first photovoltaic panel 11, a guide rod 202 is connected between the two limit seats 201, and each cleaning plate 2001 is connected to a slider 203 which is sleeved on the guide rod 202 and can slide relative to the guide rod 202;

[0082] The sliding pin 305 is connected to the sliding block 203 .

[0083] In this embodiment, the cooperation between the slider 203 and the guide rod 202 can improve the movement stability of the two cleaning plates 2001 .

Claims

1. A frozen soil roadbed protection device, comprising a heat rod body (1), wherein the heat rod body (1) has a heat absorbing section and a heat dissipating section connected to the top of the heat absorbing section, characterized in that: The heat rod body (1) is sleeved with a hollow heat dissipation cover (14) at the bottom end of the heat dissipation section, and a plurality of heat dissipation fins (16) arranged at intervals are arranged at the top end of the heat dissipation cover (14); The heat rod body (1) is also sleeved with an air bag (21) located below the heat dissipation cover (14) on the heat dissipation section.

2. The frozen soil roadbed protection device according to claim 1 is characterized in that: It also includes a liquid storage tank (15) and a circulation pump (17) connected to the heat dissipation cover (14); A liquid inlet pipe (18) is connected between the circulation pump (17) and the liquid storage tank (15); A liquid return pipe (19) is connected between the liquid storage tank (15) and the heat dissipation cover (14).

3. The frozen soil roadbed protection device according to claim 2 is characterized in that: The liquid return pipe (19) is also provided with a cooling mechanism (5) capable of acting on the heat dissipation fins (16); The cooling mechanism (5) comprises a cooling box (502), the inner side wall of the cooling box (502) is rotatably connected to a cooling fan (503), and a power mechanism (6) for driving the cooling fan (503) to rotate is arranged in the cooling box (502).

4. The frozen soil roadbed protection device according to claim 3 is characterized in that: The cooling box (502) is provided with an installation opening (501) which is in communication with the liquid return pipe (19); the power mechanism (6) comprises a rotating rod (601) which is rotatably connected in the cooling box (502) and connected to the cooling fan (503); and a plurality of power baffles (602) which can face the liquid return pipe (19) are connected to the annular surface of the rotating rod (601).

5. The frozen soil roadbed protection device according to claim 1 is characterized in that: The airbag (21) is also connected to an inflation mechanism (22); The inflation mechanism (22) comprises an air storage tank (2205) and a fixed tank (2202) sleeved on the air storage tank (2205); an air intake pump (2206) and an air inflation pump (2207) are arranged in the fixed tank (2202); an output end of the air intake pump (2206) and an input end of the air inflation pump (2207) are both connected to the air storage tank (2205); the input end of the air intake pump (2206) is connected to an air intake pipe (2203); a first non-return valve is arranged in the air intake pipe (2203); the air inflation pump (2207) is connected to an inflation pipe (2204); a second non-return valve is arranged in the inflation pipe (2204); and the end of the inflation pipe (2204) is connected to a side wall of the air bag (21).

6. The frozen soil roadbed protection device according to any one of claims 1 to 5, characterized in that: The heat rod body (1) is connected to a photovoltaic component at the top end of the heat dissipation section.

7. The frozen soil roadbed protection device according to claim 6 is characterized in that: The photovoltaic assembly comprises a first photovoltaic panel (11), a partition plate (13) is arranged in the middle of the first photovoltaic panel (11), second photovoltaic panels (12) are rotatably connected to both sides of the first photovoltaic panel (11), and the two second photovoltaic panels (12) can be inverted and covered on the first photovoltaic panel (11); The photovoltaic assembly also includes a driving mechanism (3), which can synchronously drive the two second photovoltaic panels (12) to rotate outward relative to the first photovoltaic panel (11).

8. The frozen soil roadbed protection device according to claim 7 is characterized in that: Both sides of the first photovoltaic panel (11) are provided with a connecting ear group, each connecting ear group includes two symmetrically arranged connecting ears (23), the connecting ears (23) are rotatably connected to a rotating shaft (24), and the rotating shaft (24) is linked to a rotating ear (25) located between the two connecting ears (23) and connected to the second photovoltaic panel (12); The driving mechanism (3) comprises a lifting plate (303) and a driving mechanism for driving the lifting plate (303) to move up and down; Both ends of the lifting plate (303) are connected to a lifting linkage assembly (4), the lifting linkage assembly (4) comprises a connecting frame (402), the end of the connecting frame (402) is connected to a mounting plate (403), the inner end of the mounting plate (403) is mounted with a rack (404), and the lifting linkage assembly (4) further comprises a gear (401) sleeved on the rotating shaft (24) and meshing with the rack (404).

9. The frozen soil roadbed protection device according to claim 8, characterized in that: The lifting plate (303) is provided with two symmetrically arranged slide grooves, the slide grooves comprising an oblique groove (304) and a vertical groove (306) connected end to end; It also includes a cleaning mechanism (20), the cleaning mechanism (20) includes two groups of symmetrically arranged cleaning components, the cleaning components have sliding pins (305) that can be inserted into the sliding groove to slide and cooperate; The cleaning assembly comprises a cleaning plate (2001) located between the first photovoltaic panel (11) and the second photovoltaic panel (12); brushes (2002) are arranged at the top and bottom of the cleaning plate (2001); the inner side end of the cleaning plate (2001) is fixedly connected to the top and bottom of the cleaning plate (2001) via a telescopic cover (2003); and the side wall of each cleaning plate (2001) is fixedly connected to a telescopic cover (2003) connected to the partition plate (13).

10. The frozen soil roadbed protection device according to claim 9, characterized in that: It also includes a sliding limit mechanism (2); The sliding limit mechanism (2) comprises two limit seats (201) respectively connected to the two ends of the first photovoltaic panel (11); a common guide rod (202) is connected between the two limit seats (201); and each cleaning plate (2001) is connected to a sliding block (203) which is sleeved on the guide rod (202) and can slide relative to the guide rod (202); The sliding pin (305) is connected to the sliding block (203).

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