Bridge lifting system and method

Abstract

The invention discloses a bridge lifting system and method, and belongs to the technical field of bridge construction. A bridge lifting system comprises a fixing frame, a winch with a steel wire rope is fixedly arranged in a bearing beam, the bridge lifting system further comprises a fixing base, a hook is fixedly arranged at the bottom of the fixing base, a rotating cavity is formed in the fixing base, a rotating shaft is rotationally arranged in the rotating cavity, an annular groove is formed in the outer wall of the rotating shaft, and the steel wire rope is wound around the annular groove; the nozzle is used for spraying lubricating liquid into the annular groove and is fixedly arranged on the inner wall of the rotating cavity, a liquid supply part is arranged in the fixed seat, and a heat dissipation assembly is arranged on the rotating shaft; the nozzle used for spraying lubricating liquid to the rotating shaft is arranged in the fixing base, the friction force between the steel wire rope and the rotating shaft can be reduced, friction heat generated on the rotating shaft can be reduced, heat dissipation of the rotating shaft is facilitated by spraying the lubricating liquid, the cooling effect can be further improved by arranging cooling fins on the rotating shaft, and the service life of the rotating shaft is prolonged. And long-term stable operation of the winch is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and in particular to a bridge lifting system and a lifting method. Background Art

[0002] Bridges generally refer to structures built on rivers, lakes, and seas to allow vehicles and pedestrians to pass smoothly. In order to adapt to the modern high-speed development of the transportation industry, bridges are also extended to buildings that cross mountain streams, poor geology, or meet other transportation needs to make passage more convenient. During the construction of bridges, various materials and parts used need to be delivered to the construction site, and as the construction height changes, corresponding lifting devices are often required.

[0003] A lifting device usually uses a winch and a hook. A pulley is set on the hook. The wire rope on the winch is passed over the pulley, and then its free end is fixed to the lifting device. During the lifting process, the pulley contacts the wire rope during the winding and unwinding process, which will generate friction heat. When used for a long time, the pulley will generate a lot of heat, which will not only reduce its service life, but also increase the friction between the pulley and the wire rope, causing damage to the wire rope. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that pulleys easily generate heat due to friction, which affects the use effect, and to propose a bridge lifting system and lifting method.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A bridge lifting system includes a fixed frame, on which a load-bearing beam is slidably arranged, and a winch with a steel wire rope is fixedly arranged inside the load-bearing beam. It also includes: a fixed seat, on the bottom of which a hook is fixedly arranged, a rotating cavity is provided in the fixed seat, a rotating shaft is rotatably arranged in the rotating cavity, an annular groove is provided on the outer wall of the rotating shaft, and the steel wire rope passes around the annular groove; a nozzle for spraying lubricating liquid into the annular groove is fixedly arranged on the inner wall of the rotating cavity, a liquid supply part is provided in the fixed seat, and a heat dissipation component is provided on the rotating shaft.

[0006] In order to facilitate the heat dissipation of the rotating shaft, preferably, the heat dissipation component includes multiple groups of heat sinks, at least two groups of baffles are fixedly arranged on the rotating shaft, and a cavity is formed in the rotating cavity, the multiple groups of heat sinks are fixedly arranged on the inner wall of the baffle, and a blowing component is arranged in the cavity.

[0007] In order to separate the cavity body from the two ends of the rotating cavity, further, first sealing rings are fixedly provided on the two groups of baffles, and the first sealing rings abut against the inner wall of the rotating cavity.

[0008] In order to facilitate blowing air to the heat sink, the blowing assembly further includes a plurality of groups of wind blades, all of which are fixedly arranged on the rotating shaft, an air inlet channel with a one-way valve is opened at the bottom of the fixed seat, an exhaust port is opened at the top of the fixed seat, and the exhaust port faces the wire rope.

[0009] Preferably, the liquid supply part includes a piston chamber opened in the fixed seat, and a first pipe and a second pipe with a one-way valve respectively are fixedly arranged at one end of the piston chamber, a liquid storage chamber is opened in the rotating shaft, the first pipe is connected to the liquid storage chamber, the second pipe is connected to the nozzle, and a piston plate is slidably arranged in the piston chamber, and a push rod is fixedly arranged on the piston plate.

[0010] Furthermore, a groove in an annular structure is provided on the outer wall of the rotating shaft, the groove is connected to the liquid storage chamber through a connecting pipe, and the first pipeline is connected to the groove, and second sealing rings are fixedly provided on both sides of the groove, and the second sealing ring is abutted against the inside of the fixed seat.

[0011] Furthermore, an eccentric groove is provided on the rotating shaft, and a sphere is fixedly provided on one end of the push rod extending into the eccentric groove, the sphere is abutted against the bottom of the eccentric groove, and the axis of the eccentric groove is parallel to the axis of the rotating shaft, and a spring is provided in the piston cavity, and the two ends of the spring are respectively abutted against the piston cavity and the piston plate.

[0012] Furthermore, a cleaning cylinder is fixedly arranged on the top of the fixed seat, the cleaning cylinder is sleeved on the outer wall of the wire rope, a brush is fixedly arranged on the inner wall of the cleaning cylinder, the brush is against the outer wall of the wire rope, a through groove is opened on the cleaning cylinder, and a retaining ring is fixedly arranged on the inner wall of the cleaning cylinder.

[0013] Furthermore, an annular cavity is provided in the retaining ring, a blowing hole is provided on the retaining ring, one end of the blowing hole is connected to the annular cavity, and a third pipe and a fourth pipe respectively with a one-way valve are fixedly provided at the other end of the piston cavity, and one end of the fourth pipe is connected to the annular cavity.

[0014] A bridge lifting method further comprising the following steps: Step 1: Start the winch to reel in the wire rope and pull the fixed seat; Step 2: The nozzle sprays lubricating liquid onto the annular groove; Step 3: The heat on the shaft is dissipated outward through the heat sink, and the wind blades generate airflow to blow air to the heat sink.

[0015] Compared with the prior art, the present invention provides a bridge lifting system and lifting method, which have the following beneficial effects: 1. The bridge lifting system is provided with a nozzle for spraying lubricating liquid on the rotating shaft in the fixed seat. On the one hand, the friction between the wire rope and the rotating shaft can be reduced, thereby reducing the friction heat generated on the rotating shaft and prolonging the service life. On the other hand, spraying lubricating liquid can help dissipate heat from the rotating shaft, accelerate the heat dissipation, and improve the use effect. In addition, a heat sink is provided on the rotating shaft, which can further improve the heat dissipation effect and ensure the long-term stable operation of the winch. 2. The bridge lifting system has a wind blade fixed on the rotating shaft. On the one hand, it can blow air to the heat sink to speed up the heat dissipation on the heat sink. On the other hand, it can blow hot air to the wire rope to properly heat the lubricating liquid on the wire rope, which helps to improve the fluidity of the lubricating liquid and make the lubricating liquid flow back from the wire rope into the annular groove, thereby reducing the lubricating liquid being taken out by the wire rope. This can not only increase the lubrication and heat dissipation effect of the annular groove, but also improve the reuse effect of the lubricating liquid. 3. The bridge lifting system can clean the dust on the surface of the wire rope by fixing a cleaning cylinder on the fixed seat and fixing a brush inside the cleaning cylinder, which helps to reduce the friction between the wire rope and the annular groove and improve the lubrication effect.

[0016] The parts not involved in the device are the same as the prior art or can be implemented by the prior art. The present invention can reduce the friction between the wire rope and the rotating shaft by arranging a nozzle for spraying lubricating liquid on the rotating shaft in the fixed seat, thereby reducing the friction heat generated on the rotating shaft. Spraying lubricating liquid helps to dissipate the heat of the rotating shaft, and arranging heat sinks on the rotating shaft can further improve the heat dissipation effect and ensure the long-term stable operation of the winch. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a bridge lifting system proposed by the present invention Figure 1 ; Figure 2 A schematic diagram of the structure of a bridge lifting system proposed by the present invention Figure 2 ; Figure 3 This is a structural schematic diagram of a bridge lifting system fixing seat proposed by the present invention; Figure 4 A cross-sectional view of a fixing seat of a bridge lifting system proposed by the present invention; Figure 5 A bridge lifting system proposed by the present invention Figure 4 A partial schematic diagram of the Figure 6 A bridge lifting system proposed by the present invention Figure 5 A magnified view of part A; Figure 7This is a schematic structural diagram of a rotating shaft of a bridge lifting system proposed by the present invention.

[0018] In the figure: 1, fixed frame; 101, load-bearing beam; 2, fixed seat; 201, hook; 202, rotating chamber; 203, air inlet channel; 204, exhaust port; 3, rotating shaft; 301, liquid storage chamber; 302, liquid adding pipe; 303, annular groove; 304, baffle; 305, eccentric groove; 306, groove; 307, connecting pipe; 308, first sealing ring; 4, wire rope; 5, wind blade; 501, heat sink; 6, piston chamber; 601, first pipeline; 602, second pipeline; 603, third pipeline; 604, fourth pipeline; 7, piston plate; 701, push rod; 8, cleaning cylinder; 801, brush; 802, through groove; 803, baffle ring; 804, annular chamber; 805, blowing hole; 9, nozzle. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example

[0021] Reference Figure 1-Figure 7A bridge lifting system includes a fixed frame 1, the fixed frame 1 includes a vertical pole, a support plate is fixedly arranged at the bottom of the vertical pole, a cross beam is fixedly arranged at the top of the vertical pole, a load-bearing beam 101 is slidably arranged on the fixed frame 1, preferably the load-bearing beam 101 is slidably arranged on the cross beam, and a winch for driving the load-bearing beam 101 to slide back and forth like the cross beam is fixedly arranged on the cross beam, and a winch with a wire rope 4 is fixedly arranged in the load-bearing beam 101, and also includes: a fixed seat 2, a hook 201 for hoisting objects is fixedly arranged at the bottom of the fixed seat 2, a rotating cavity 202 is opened in the fixed seat 2, a rotating shaft 3 is rotatably arranged in the rotating cavity 202, and an annular groove 303 is opened on the outer wall of the rotating shaft 3, here, we open two groups of annular grooves 303, and two groups of wire ropes 4 are also wound on the winch, And the ends of the two groups of steel wire ropes 4 away from the winch are respectively passed through the corresponding annular grooves 303, and then fixed on the load-bearing beam 101; the nozzle 9 for spraying lubricating liquid into the annular groove 303 is fixedly arranged on the inner wall of the rotating chamber 202, a liquid supply part is arranged in the fixed seat 2, and a heat dissipation component is arranged on the rotating shaft 3. When in use, the lubricating liquid is provided to the nozzle 9 through the liquid supply part, and the nozzle 9 can spray the lubricating liquid into the annular groove 303. On the one hand, the friction between the steel wire rope 4 and the rotating shaft 3 can be reduced, thereby reducing the friction heat generated on the rotating shaft 3 and improving the service life. On the other hand, spraying the lubricating liquid can help dissipate the heat of the rotating shaft 3, accelerate the heat dissipation, and improve the use effect. In addition, a heat dissipation component is arranged on the rotating shaft 3, which can further improve the heat dissipation effect and ensure the long-term stable operation of the winch.

[0022] During use, by arranging a nozzle 9 for spraying lubricating liquid onto the rotating shaft 3 in the fixing seat 2, on the one hand, the friction between the wire rope 4 and the rotating shaft 3 can be reduced, thereby reducing the friction heat generated on the rotating shaft 3 and prolonging the service life; on the other hand, spraying the lubricating liquid can help to dissipate the heat of the rotating shaft 3, accelerate the heat dissipation, and improve the use effect; and by arranging the heat sink 501 on the rotating shaft 3, the heat dissipation effect can be further improved to ensure the long-term stable operation of the winch; by fixing the wind blade 5 on the rotating shaft 3, on the one hand, air can be blown to the heat sink 501 to accelerate the heat dissipation on the heat sink 501, and on the other hand, hot air can be blown to the wire rope 4 to properly heat the lubricating liquid on the wire rope 4, which helps to improve the fluidity of the lubricating liquid, so that the lubricating liquid flows back from the wire rope 4 into the annular groove 303, and the wire rope 4 is reduced. The lubricating liquid is taken out, thereby not only increasing the lubrication and heat dissipation effects of the annular groove 303, but also improving the reuse effect of the lubricating liquid.

[0023] Reference Figure 4 , Figure 5 and Figure 7Here, according to the actual use situation, we design the heat dissipation component as multiple groups of heat sinks 501. The heat sinks 501 are provided with two to sixty groups, preferably fifty groups, a total of one hundred groups. At least two groups of baffles 304 are fixedly provided on the rotating shaft 3. Here, we prefer two groups of baffles 304, and the two groups of baffles 304 form a cavity in the rotating cavity 202, that is, an independent cavity is formed between the two groups of baffles 304 and the inner wall of the rotating cavity 202. The multiple groups of heat sinks 501 are all located in the cavity. The multiple groups of heat sinks 501 are fixedly provided On the inner wall of the baffle 304, an inclined surface is fixedly arranged on the baffle 304, that is, the closer the heat sink 501 is to the rotating shaft 3, the smaller its width is, and the width is larger at the end away from the rotating shaft 3, which is conducive to the natural dissipation of heat and improves the use effect. A blowing component is arranged in the cavity. When in use, by fixing the baffle 304 on the rotating shaft 3 and fixing the heat sink 501 on the baffle 304, the heat dissipation area of ​​the rotating shaft 3 can be increased, the heat dissipation effect can be improved, the temperature on the rotating shaft 3 can be reduced, and the reliable and stable operation of the rotating shaft 3 and the wire rope 4 can be ensured.

[0024] Reference Figure 4 , Figure 5 and Figure 7 A first sealing ring 308 is fixedly arranged on both sets of baffles 304, and the first sealing ring 308 is abutted against the inner wall of the rotating chamber 202. When in use, the first sealing ring 308 is fixedly arranged on the baffle 304, so that the cavity and the two ends of the rotating chamber 202 can be separated, and a certain sealing effect can be achieved to prevent the lubricating fluid in the two ends of the rotating chamber 202 from flowing into the cavity, resulting in a reduction of the lubricating fluid in the annular groove 303, which not only affects the lubrication and heat dissipation effects, but also easily causes the lubricating fluid to be wasted, affecting normal use.

[0025] Reference Figure 4 , Figure 5 and Figure 7Here, we design the blowing assembly as a plurality of wind blades 5, and the wind blades 5 are provided with two to fifty groups, preferably forty groups, all of which are fixedly arranged on the rotating shaft 3 and evenly distributed on the rotating shaft 3 in a circumferential manner. An air inlet channel 203 with a one-way valve is provided at the bottom of the fixing seat 2, and an air outlet 204 is provided at the top of the fixing seat 2, and the air outlet 204 is directed toward the wire rope 4. When in use, by fixing the wind blades 5 on the rotating shaft 3, when the rotating shaft 3 rotates with the wind blades 5, wind force is generated in the cavity, and the airflow is then discharged from the heat sink 50 1 and then blown to the steel wire rope 4 through the exhaust port 204. On the one hand, it can blow air to the heat sink 501 to accelerate the heat dissipation on the heat sink 501. On the other hand, it can blow hot air to the steel wire rope 4 to properly heat the lubricating liquid on the steel wire rope 4, especially in the winter when the temperature is relatively low. This helps to improve the fluidity of the lubricating liquid, so that the lubricating liquid flows back from the steel wire rope 4 into the annular groove 303, reducing the lubricating liquid being taken out by the steel wire rope 4, thereby not only increasing the lubrication and heat dissipation effects on the annular groove 303, but also improving the reuse effect of the lubricating liquid.

[0026] Reference Figure 4 and Figure 5 Here, we design the liquid supply part as follows: a piston chamber 6 is provided in the fixed seat 2, and a first pipe 601 and a second pipe 602 with a one-way valve are fixedly provided on one end of the piston chamber 6; a liquid storage chamber 301 for storing lubricating liquid is provided in the rotating shaft 3, and the lubricating liquid can be selected from synthetic oil, semi-synthetic oil, mineral oil or ester oil. Here, we prefer synthetic oil, including polyalphaolefin (PAO), ester oil, silicone oil, etc. Synthetic oil has excellent thermal stability, can maintain good lubrication performance at high temperature, and can still maintain good fluidity at low temperature, which is convenient for storage and use. Moreover, the working temperature range of synthetic oil is wide, which is suitable for various environmental conditions. It also has good oxidation resistance and prolongs the service life; a liquid filling pipe 302 connected to the liquid storage chamber 301 is provided on the rotating shaft 3, and in the filling pipe 302, the liquid filling pipe 302 is connected to the liquid storage chamber 301. The mouth of the liquid pipe 302 is threadedly connected with a plug, and a one-way valve is fixedly arranged on the plug to facilitate the pressure in the liquid storage chamber 301 to be consistent with the outside world, which is convenient for the piston chamber 6 to extract, and a filter screen is fixedly arranged in the liquid adding pipe 302 to reduce the dust from entering the liquid storage chamber 301 and improve the use effect. The first pipe 601 is connected to the liquid storage chamber 301, and the second pipe 602 is connected to the nozzle 9. A piston plate 7 is slidably arranged in the piston chamber 6, and a push rod 701 is fixedly arranged on the piston plate 7. When in use, the piston plate 7 is driven by the push rod 701 to slide back and forth in the piston chamber 6, and the lubricating liquid can be extracted from the liquid storage chamber 301 through the first pipe 601, and then the lubricating liquid is transported to the nozzle 9 through the second pipe 602. The nozzle 9 sprays the lubricating liquid into the annular groove 303 on the rotating shaft 3, thereby improving the use effect.

[0027] Reference Figure 5 A groove 306 with an annular structure is provided on the outer wall of the rotating shaft 3, and the groove 306 is connected to the liquid storage chamber 301 through the connecting pipe 307, and the first pipeline 601 is connected to the groove 306. Second sealing rings are fixedly provided on both sides of the groove 306, and the second sealing ring is abutted against the inside of the fixing seat 2. When in use, by providing the groove 306 on the rotating shaft 3, the piston chamber 6 can also extract lubricating liquid from the liquid storage chamber 301 through the first pipeline 601, the groove 306 and the connecting pipe 307 during the rotation of the rotating shaft 3, thereby ensuring normal operation and improving the use effect.

[0028] Reference Figure 4 , Figure 5 and Figure 7 An eccentric groove 305 is provided on the rotating shaft 3, and a ball is fixedly arranged at one end of the push rod 701 extending into the eccentric groove 305, and the ball is abutted against the inner bottom of the eccentric groove 305, and the axis of the eccentric groove 305 and the axis of the rotating shaft 3 are parallel to each other. A spring is provided in the piston chamber 6, and the two ends of the spring are respectively abutted against the piston chamber 6 and the piston plate 7. When in use, the eccentric groove 305 is provided on the rotating shaft 3, and the ball on the push rod 701 is abutted against the inner bottom of the eccentric groove 305. When the rotating shaft 3 rotates with the eccentric groove 305, the push rod 701 can be squeezed, and under the elastic force of the spring, the push rod 701 and the piston plate 7 slide back and forth in the piston chamber 6. The principle is similar to that of a cam mechanism.

[0029] Reference Figure 3-Figure 7 A cleaning cylinder 8 is fixedly arranged on the top of the fixing seat 2. Preferably, four groups of cleaning cylinders 8 are arranged. The four groups of cleaning cylinders 8 are respectively sleeved on the outer walls of the corresponding steel wire ropes 4. A brush 801 is fixedly arranged on the inner wall of the cleaning cylinder 8. The brush 801 is pressed against the outer wall of the steel wire rope 4. A through groove 802 is opened on the cleaning cylinder 8. A retaining ring 803 is fixedly arranged on the inner wall of the cleaning cylinder 8. When in use, the cleaning cylinder 8 is fixedly arranged on the fixing seat 2, and the brush 801 is fixedly arranged in the cleaning cylinder 8, so that the dust on the surface of the steel wire rope 4 can be removed. Cleaning helps to reduce the friction between the annular groove 303 and improve the lubrication effect. Part of the dust swept away remains on the top of the cleaning cylinder 8 and can be blown away by the wind. The other part falls on the retaining ring 803 and then slides out of the cleaning cylinder 8 along the through groove 802, reducing the number of manual cleaning times. A retaining ring 803 is fixed in the cleaning cylinder 8. When the wire rope 4 slides out of the fixing seat 2, the retaining ring 803 can properly scrape the lubricating liquid on the wire rope 4 and make it flow back to the annular groove 303, thereby improving the use effect.

[0030] Reference Figure 6An annular cavity 804 is provided in the retaining ring 803, and an air blowing hole 805 is provided on the retaining ring 803, and one end of the air blowing hole 805 is connected to the annular cavity 804. A third pipe 603 and a fourth pipe 604 with a one-way valve are fixedly provided at the other end of the piston cavity 6, and one end of the fourth pipe 604 is connected to the annular cavity 804. When in use, when the piston plate 7 slides back and forth, the upper end of the piston cavity 6 can draw gas from the outside through the third pipe 603, and then transport it to the annular cavity 804 through the fourth pipe 604, and finally blow it toward the brush 801 from the air blowing hole 805, which can reduce the dust from entering the rotating cavity 202, and facilitate the dust to be blown out from the through groove 802, thereby improving the use effect.

[0031] A bridge lifting method further comprising the following steps: Step 1: Start the winch to reel in the wire rope 4 and pull up the fixed seat 2; When in use, by hanging the objects to be hoisted on the hook 201, starting the winch on the load-bearing beam 101 to lift the fixed seat 2 and the hook 201, the objects used for construction can be hoisted, thereby improving the use effect; Step 2: The nozzle 9 sprays lubricating liquid toward the annular groove 303; During the lifting process, the nozzle 9 can spray the lubricating liquid into the annular groove 303 on the rotating shaft 3, which can reduce the friction between the wire rope 4 and the annular groove 303, reduce the friction heat generated on the rotating shaft 3, ensure the reliable and stable operation of the rotating shaft 3 and the wire rope 4, and improve the use effect.

[0032] Step 3: The heat on the rotating shaft 3 is dissipated outward through the heat sink 501, and the wind blade 5 generates airflow to blow the heat sink 501; In addition, a heat sink 501 is fixedly provided on the rotating shaft 3, which helps to increase the heat dissipation surface of the rotating shaft 3 and improve the heat dissipation effect. The rotating shaft 3 rotates with the wind blades 5 to generate wind force, which can not only blow air to the heat sink 501 to accelerate the dissipation of heat, but the heat sink 501 can also heat the airflow appropriately. When the gas blows on the wire rope 4, the lubricating liquid on the wire rope 4 can be heated to improve the fluidity of the lubricating liquid. Under the action of gravity, the lubricating liquid can flow back to the annular groove 303 to improve the use effect.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A bridge lifting system, comprising a fixed frame (1), a load-bearing beam (101) being slidably arranged on the fixed frame (1), a winch with a steel wire rope (4) being fixedly arranged inside the load-bearing beam (101), characterized in that: Also includes: A fixed seat (2), a hook (201) being fixedly arranged at the bottom of the fixed seat (2), a rotating chamber (202) being provided in the fixed seat (2), a rotating shaft (3) being rotatably arranged in the rotating chamber (202), an annular groove (303) being provided on the outer wall of the rotating shaft (3), and the steel wire rope (4) passing through the annular groove (303); A nozzle (9) for spraying lubricating liquid into the annular groove (303) is fixedly arranged on the inner wall of the rotating chamber (202), a liquid supply portion is arranged in the fixed seat (2), and a heat dissipation component is arranged on the rotating shaft (3).

2. A bridge lifting system according to claim 1, characterized in that: The heat dissipation component comprises a plurality of groups of heat dissipation fins (501), at least two groups of baffles (304) are fixedly arranged on the rotating shaft (3), and a cavity is formed in the rotating cavity (202), the plurality of groups of heat dissipation fins (501) are fixedly arranged on the inner wall of the baffle (304), and a blowing component is arranged in the cavity.

3. A bridge lifting system according to claim 2, characterized in that: A first sealing ring (308) is fixedly arranged on both sets of baffles (304), and the first sealing ring (308) abuts against the inner wall of the rotating chamber (202).

4. A bridge lifting system according to claim 3, characterized in that: The blowing assembly comprises a plurality of groups of wind blades (5), all of which are fixedly arranged on the rotating shaft (3); an air inlet passage (203) with a one-way valve is provided at the bottom of the fixing seat (2); an air outlet (204) is provided at the top of the fixing seat (2), and the air outlet (204) faces the steel wire rope (4).

5. A bridge lifting system according to claim 1, characterized in that: The liquid supply portion comprises a piston chamber (6) provided in the fixing seat (2), a first pipe (601) and a second pipe (602) each having a one-way valve are fixedly provided at one end of the piston chamber (6), a liquid storage chamber (301) is provided in the rotating shaft (3), the first pipe (601) is connected to the liquid storage chamber (301), the second pipe (602) is connected to the nozzle (9), and a piston plate (7) is slidably provided in the piston chamber (6), and a push rod (701) is fixedly provided on the piston plate (7).

6. A bridge lifting system according to claim 5, characterized in that: A groove (306) in an annular structure is provided on the outer wall of the rotating shaft (3); the groove (306) is connected to the liquid storage chamber (301) via a connecting pipe (307); the first pipeline (601) is connected to the groove (306); second sealing rings are fixedly provided on both sides of the groove (306); the second sealing rings abut against the inside of the fixing seat (2).

7. A bridge lifting system according to claim 6, characterized in that: An eccentric groove (305) is provided on the rotating shaft (3); a ball is fixedly provided at one end of the push rod (701) extending into the eccentric groove (305); the ball abuts against the bottom of the eccentric groove (305); and the axis of the eccentric groove (305) is parallel to the axis of the rotating shaft (3); a spring is provided in the piston chamber (6); two ends of the spring abut against the piston chamber (6) and the piston plate (7), respectively.

8. A bridge lifting system according to claim 7, characterized in that: A cleaning cylinder (8) is fixedly arranged on the top of the fixing seat (2), the cleaning cylinder (8) is sleeved on the outer wall of the steel wire rope (4), a brush (801) is fixedly arranged on the inner wall of the cleaning cylinder (8), the brush (801) abuts against the outer wall of the steel wire rope (4), a through groove (802) is formed on the cleaning cylinder (8), and a retaining ring (803) is fixedly arranged on the inner wall of the cleaning cylinder (8).

9. A bridge lifting system according to claim 8, characterized in that: An annular cavity (804) is provided in the retaining ring (803), and an air blowing hole (805) is provided on the retaining ring (803). One end of the air blowing hole (805) is connected to the annular cavity (804). A third pipe (603) and a fourth pipe (604) each having a one-way valve are fixedly provided at the other end of the piston cavity (6), and one end of the fourth pipe (604) is connected to the annular cavity (804).

10. A lifting method comprising the bridge lifting system according to any one of claims 1 to 9, characterized in that: The following steps are also included: Step 1: Start the winch to reel in the wire rope (4) and pull up the fixed seat (2); Step 2: The nozzle (9) sprays lubricating liquid onto the annular groove (303); Step three: The heat on the rotating shaft (3) is dissipated outwards through the heat sink (501), and the wind blades (5) generate airflow to blow air towards the heat sink (501).

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