Soaking corrosion protection device for municipal bridge

Abstract

The invention relates to the field of bridge protection devices, and discloses a municipal bridge immersion corrosion protection device which comprises a protection mechanism, a supporting frame, a fixing plate and a bridge pier. Meanwhile, a triangular strip at the outer end of a circular block is driven to scrape a hollow groove in the gap position of the outer side of a fixing plate, so that attachments on the hollow groove in the gap position of the outer side of the fixing plate are cleaned, and the attachments are prevented from being adsorbed in the fixing plate and a protection mechanism; a spiral ring rotates and moves upwards along a second screw rod through a thread structure, so that the turbine structure at the uppermost end is separated from the outer side of a fixing plate and moves upwards, and the turbine structure at the uppermost end rotates and moves to scrape attachments on the outer side of the pier under the support of a supporting structure, so that the phenomenon that after the water level rises, the attachment is scraped is avoided; the position, separated from the fixing plate, of the pier 4 is easily adsorbed by attachments, and the burden of the pier is increased.

Description

Technical Field

[0001] The invention relates to the field of bridge protection devices, in particular to an immersion corrosion protection device for municipal bridges. Background Art

[0002] In municipal bridge projects, part of the bridge piers will be underwater. The salt content in seawater is too high. The piers will be easily corroded by the steel bars in the piers when immersed in seawater for a long time. The corrosion effect will form a biofilm after the microorganisms in the water attach. The biofilm will accelerate the corrosion of the pier concrete through metabolic products. The formation of biofilm will also increase the roughness of the surface, resulting in increased water flow resistance, which is likely to cause continuous wear on the piers. Protective devices are needed to reduce the scouring of water on the piers and reduce the immersion corrosion effect of water on the piers. The immersion corrosion of the piers is protected by isolating and reducing the scouring of water with special coatings. The protective devices have a certain anti-collision effect, reducing the impact of ships on the water on the piers.

[0003] However, when the protective device is used to protect the bridge piers, it is not easy for the protective device to fit completely with the bridge piers and seal, so there is still water flow between the outer periphery of the bridge pier and the protective device. When the water flows, the protective device blocks the outer water flow to a certain extent. Although the scouring force of the water is reduced, the water flow will still have a certain flow force inside the protective device, and biological attachments in the water flow are easy to stay in the gaps around the bridge piers and the inside of the protective device. The adsorption of attachments can easily cause dense accumulation inside the protective device and outside the bridge pier, thereby reducing the scouring of the water flow while causing the attachments to stay on the surface of the bridge pier. It is too troublesome to clean the bridge piers and protective devices regularly, and the water flow will exceed the height of the protective device at high tide. The part of the water flow above the protective device is easy to be adsorbed by attachments on the bridge pier, which can easily form a large burden on the bridge pier. Summary of the Invention

[0004] The present invention provides an immersion corrosion protection device for a municipal bridge, which overcomes the deficiencies described in the background art.

[0005] The technical solution adopted by the present invention to solve its technical problem is: An immersion corrosion protection device for a municipal bridge comprises a protection mechanism, a support frame, a fixing plate, and a bridge pier. The protection mechanism is provided with a first screw, and the fixing plate is fixed to the outside of the bridge pier via the first screw. The fixing plates are distributed in an annular manner on the outside of the bridge pier. The protective mechanism is also provided with a buffer mechanism, a surrounding plate and a scraping mechanism. The buffer mechanism and the scraping mechanism are distributed in a circular array on the outside of the fixed plate. The surrounding plate is fixed in a circular manner on the side of the support frame and is fixed to the outside of the fixed plate through the support frame. The scraping mechanism and the buffer mechanism are adjacent to each other in a circular manner. The bottom of the support frame is provided with a hollow structure distributed in a circular manner. Water flows from the bottom of the support frame into the cavity of the buffer mechanism and the scraping mechanism, and the scraping mechanism is caused to swing under the flow of water.

[0006] A better technical solution: the buffer mechanism is provided with a limit rod, a turbine structure, a support plate, a ring, a second screw and a support structure. The support plate is connected in parallel to the outside of the fixed plate through a support frame. The bottom of the second screw is fixed to the surface of the support frame. A limit rod is provided at the lower end of the outside of the support structure. The support structure moves on the track in the support plate through the limit rod. There are three turbine structures. The topmost turbine structure moves spirally with the second screw, and the turbine structure drives the ring to lift the support structure upward.

[0007] A better technical solution: the scraping mechanism is provided with a soft strip, a rotating structure, a limiting plate and a circular block, the circular block is arranged on the side of the rotating structure, the middle of the rotating structure rotates on the inner side of the enclosure, the limiting plate is fixed between two adjacent fixed plates, the circular block passes through the middle of the limiting plate, and the circular block rotates through the limiting of the limiting plate, and the circular block is pressed against the outside of the pier, the contact part between the middle of the rotating structure and the inner side of the enclosure is in a left and right open state, so that it can rotate 30° up and down on the inner side of the enclosure, the soft strip is arranged on the side of the enclosure, and there is a gap between the soft strips between adjacent enclosures, the water flow impacts the soft strip and expands the gap to enter the internal cavity of the scraping mechanism.

[0008] A better technical solution: The rotating structure is provided with a rotating plate, a rotating rod, a rubber plate and a spring. The spring is located inside the rubber plate, and both ends of the spring are fixed to the side of the rotating plate. The rotating plate is connected to the side of the rotating rod, and a hinge rod is provided at the connection. The rotating plate swings on the side of the rotating rod through the hinge rod, and the rotating plate is pressed against the inner side of the enclosure under the elastic force of the spring.

[0009] A better technical solution: a triangular bar is provided on the outside of the circular block, a hollow groove is provided between adjacent fixed plates, and the triangular bar is arranged on the side of the circular block corresponding to the hollow groove. There are four triangular bars, which are symmetrically distributed. When the circular block swings and rotates, the triangular bars are driven to elastically scrape the hollow groove position.

[0010] A better technical solution: The turbine structure is provided with a sponge block, a foam plate, a plastic plate and a spiral ring. The plastic plate is arranged obliquely on the outside of the spiral ring, the foam plate is fixed on the inside of the plastic plate, the sponge block is arranged on the outside of the plastic plate, and a threaded structure is provided on the inside of the spiral ring. The spiral ring rotates along the second screw through the threaded structure.

[0011] A preferred technical solution: The support structure is provided with a ball rod, a plane plate and a circular groove, wherein the ball rod is arranged on the side of the plane plate, and the circular groove corresponds to the second screw rod arranged in the middle of the plane plate, and the ball rod slides along the outer track of the fixed plate and causes the circular ring to lift the lower side of the plane plate; The limiting rod is provided with a slide plate and a connecting plate. The connecting plate is arranged at the lower end of the slide plate. The slide plate is vertically connected to the lower end of the edge of the plane plate, and the connecting plate moves correspondingly inside the supporting plate.

[0012] Compared with the existing technology, this technical solution has the following advantages: In the present invention, when the water flow changes in height, the water flow will generate an up and down force to squeeze the scraping mechanism, so that after the rotating plate and the rubber plate are subjected to the force of water, the rotating plate swings 30 degrees left and right with the rotating rod as the center, and at the same time, the rotating plate presses against the inner side of the enclosure plate and the outer side of the fixed plate under the elastic force of the spring, and scrapes off the attachments on the inner side of the enclosure plate and the outer side of the fixed plate while swinging, and when the scraping mechanism swings, it drives the triangular bar at the outer end of the circular block to scrape the hollow groove at the gap position on the outer side of the fixed plate, so that the attachments on the hollow groove at the gap position on the outer side of the fixed plate are cleaned, thereby achieving the cleaning and scraping of the attachments, and preventing the attachments from being adsorbed in the fixed plate and the protective mechanism.

[0013] When the water flow rises, the spiral ring of the turbine structure at the top of the present invention rotates upward along the second screw through the threaded structure, and lifts the flat plate in the support structure upward through the circular ring. At this time, the slide plate and the connecting plate at the lower end of the flat plate move in the first slide groove in the support plate, so that the flat plate slides on the outside of the fixed plate through the ball rod when being lifted, thereby causing the turbine structure at the top to detach from the outside of the fixed plate and move upward, and under the support of the support structure, the turbine structure at the top scrapes off the attachments on the outside of the pier, to prevent the position of the pier detached from the fixed plate from being easily adsorbed by attachments after the water level rises, thereby increasing the burden on the pier. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and examples.

[0015] Figure 1 This is an overall diagram of the present invention.

[0016] Figure 2 It is a plan view of the protection mechanism.

[0017] Figure 3 A side view of the buffer mechanism.

[0018] Figure 4 It is a three-dimensional schematic diagram of the scraping mechanism.

[0019] Figure 5 It is a three-dimensional schematic diagram of the rotating structure.

[0020] Figure 6 It is a plan view of the hollow slot and triangular bar.

[0021] Figure 7 It is a three-dimensional cross-sectional schematic diagram of the turbine structure.

[0022] Figure 8 A three-dimensional schematic diagram of the support structure.

[0023] In the figure: protection mechanism 1, support frame 2, fixing plate 3, bridge pier 4, buffer mechanism 11, enclosure 12, scraping mechanism 13, first screw 14, limiting rod 111, turbine structure 112, support plate 113, circular ring 114, second screw 115, supporting structure 116, soft strip 131, rotating structure 132, limiting plate 133, circular block 134, rotating plate 321, rotating rod 322, rubber plate 323, spring 324, hollow groove 101, triangular strip 102, sponge block 21, foam plate 22, plastic plate 23, spiral ring 24, ball rod 31, plane plate 32, circular groove 33, slide plate 41, connecting plate 42. DETAILED DESCRIPTION

[0024] like Figures 1 to 8 As shown, the present invention proposes an immersion corrosion protection device for a municipal bridge, comprising a protection mechanism 1, a support frame 2, a fixing plate 3, and a pier 4. The protection mechanism 1 is provided with a first screw 14, and the fixing plate 3 is fixed to the outside of the pier 4 by the first screw 14. The fixing plates 3 are distributed in an annular manner on the outside of the pier 4. The protective mechanism 1 is also provided with a buffer mechanism 11, a surrounding plate 12 and a scraping mechanism 13. The buffer mechanism 11 and the scraping mechanism 13 are distributed in a circular array on the outside of the fixed plate 3. The surrounding plate 12 is fixed in a circular manner on the side of the support frame 2 and is fixed to the outside of the fixed plate 3 through the support frame 2. The scraping mechanism 13 and the buffer mechanism 11 are adjacent to each other in a circular manner. The bottom of the support frame 2 is provided with a hollow structure distributed in a circular manner. Water flows from the bottom of the support frame 2 into the cavity of the buffer mechanism 11 and the scraping mechanism 13, and the scraping mechanism 13 is swung under the flow of water.

[0025] Among them, the buffer mechanism 11 is provided with a limiting rod 111, a turbine structure 112, a support plate 113, a ring 114, a second screw 115 and a support structure 116. The support plate 113 is connected in parallel to the outside of the fixed plate 3 through the support frame 2. The bottom of the second screw 115 is fixed on the surface of the support frame 2. A limiting rod 111 is provided at the lower end of the outer side of the support structure 116. The support structure 116 moves in a track in the support plate 113 through the limiting rod 111. There are three turbine structures 112. The topmost turbine structure 112 moves spirally with the second screw 115, and the turbine structure 112 drives the ring 114 to lift the support structure 116 upward.

[0026] In addition, the function of the ring 114 is to reduce the friction between the turbine structure 112 and the support structure 116 in direct contact, and to transmit the lifting force of the turbine structure 112 on the support structure 116 through the upper and lower ends of the ring 114.

[0027] In addition, water will surge upward from the hollow structure at the bottom of the support frame 2 into the cavity of the buffer mechanism 11 and the scraping mechanism 13, and the water will impact the outside of the scraping mechanism 13. Under the flow force, the water enters the cavity of the buffer mechanism 11 and the scraping mechanism 13 from the right side of the protective mechanism 1, and flows through the scraping mechanism 13 and the buffer mechanism 11 to be converted into a force for removing attachments, and then the water flows out from the protective mechanism 1 on the left, and the attachments are discharged downward from the hollow structure at the bottom of the support frame 2 after the water level drops.

[0028] Among them, the scraping mechanism 13 is provided with a soft strip 131, a rotating structure 132, a limiting plate 133 and a circular block 134. The circular block 134 is arranged on the side of the rotating structure 132, and the middle of the rotating structure 132 rotates on the inner side of the enclosure 12. The limiting plate 133 is fixed between two adjacent fixed plates 3. The circular block 134 passes through the middle of the limiting plate 133, and the circular block 134 is rotated by the limiting plate 133, and the circular block 134 is pressed against the outside of the pier 4. The contact part between the middle of the rotating structure 132 and the inner side of the enclosure 12 is in a left and right open state, so that it can rotate 30° up and down on the inner side of the enclosure 12. The soft strip 131 is arranged on the side of the enclosure 12, and there is a gap between the soft strips 131 between adjacent enclosures 12. The water flow impacts the soft strip 131 and expands the gap to enter the internal cavity of the scraping mechanism 13.

[0029] In addition, the soft strip 131 is made of rubber and is hollow inside, having the characteristic of deforming and bending under stress. When water flows into the soft strip 131 , the soft strip 131 deforms and the gap between the soft strips 131 expands, allowing the water to enter the internal cavity of the scraping mechanism 13 .

[0030] Moreover, among the three turbine structures 112, only the uppermost limiting rod 111 will cooperate with the second screw 115 in a spiral manner, and the other two turbine structures 112 will only rotate around the second screw 115 under the drive of the water flow, and the other two turbine structures 112 and the rotating structure 132 in the adjacent scraping mechanism 13 are in a staggered state, so that the two turbine structures 112 are blocked to a certain extent by the scraping mechanism 13, and then the turbine structure 112 rotates within a certain range as the water flow rises.

[0031] Among them, the rotating structure 132 is provided with a rotating plate 321, a rotating rod 322, a rubber plate 323 and a spring 324. The spring 324 is located inside the rubber plate 323, and the two ends of the spring 324 are fixed to the side of the rotating plate 321. The rotating plate 321 is connected to the side of the rotating rod 322, and a hinge rod is provided at the connection. The rotating plate 321 swings on the side of the rotating rod 322 through the hinge rod, and the rotating plate 321 is pressed against the inner side of the enclosure 12 under the elastic force of the spring 324.

[0032] In addition, the flow of water will generate an upward buoyancy, causing the rotating plate 321 to rotate and swing left and right with the rotating rod 322 as the center. At this time, under the elastic force of the spring 324, the two rotating plates 321 and 333 on the same side form a curved shape, and through the elastic force of the spring 324, the rotating plate 321 is pressed toward the inner side of the enclosure 12 and the outer side of the fixed plate 3 through the hinge rod, and under the rotating and swinging force of the rotating plate 321, the rotating plate 321 scrapes the inner side of the enclosure 12 and the outer side of the fixed plate 3, and the swing of the rotating rod 322 causes the circular block 134 outside the rotating rod 322 to press against the gap outside the bridge pier 4, and scrape the gap position outside the bridge pier 4.

[0033] Moreover, the turbine structure 112 and the rotating structure 132 are spaced apart in an upper and lower manner, and the uppermost turbine structure 112 is not blocked by the rotating structure 132. When the rotating structure 132 swings, the swing amplitude will not cause the two lower turbine structures 112 to separate from the two rotating structures 132, so that the turbine structure 112 and the rotating structure 132 can move within a certain range.

[0034] Among them, a triangular bar 102 is provided on the outside of the circular block 134, and a hollow groove 101 is provided between adjacent fixed plates 3. The triangular bar 102 is arranged on the circular block 134 corresponding to the side of the hollow groove 101. There are four triangular bars 102, which are symmetrically distributed. When the circular block 134 swings and rotates, it drives the triangular bar 102 to elastically scrape the position of the hollow groove 101.

[0035] In addition, the triangular bar 102 is made of plastic and has certain elasticity and toughness. After the rotating plate 321 is subjected to the rising force of the water flow, the circular block 134 is driven to swing, so that the triangular bar 102 near the outer side of the pier 4 rotates and swings at the position of the hollow groove 101. At this time, the triangular bar 102 scrapes off the attachments in the hollow groove 101.

[0036] Among them, the turbine structure 112 is provided with a sponge block 21, a foam plate 22, a plastic plate 23 and a spiral ring 24. The plastic plate 23 is tilted and arranged on the outside of the spiral ring 24. The foam plate 22 is fixed on the inside of the plastic plate 23. The sponge block 21 is arranged on the outside of the plastic plate 23. A threaded structure is provided on the inside of the spiral ring 24. The spiral ring 24 rotates along the second screw 115 through the threaded structure.

[0037] Moreover, among the three turbine structures 112, only the spiral ring 24 in the topmost turbine structure 112 is provided with a threaded structure. After the water flow rises, the water flow impacts the plastic plate 23 in the topmost turbine structure 112, and under the buoyancy of the foam plate 22, drives the plastic plate 23 and the spiral ring 24 to rotate upward along the second screw 115, and as the water flow rises, the spiral ring 24 lifts the circular ring 114 upward, so that the circular ring 114 lifts the supporting structure 116, so that the topmost turbine structure 112 rotates and rises with the height of the water flow, and then the topmost turbine structure 112 rotates and scrapes the outer side of the bridge pier 4 to prevent some parts of the bridge pier 4 from being easily unprotected and attached with adsorbents after the water flow rises.

[0038] In addition, when the plastic plate 23 is in a compressed state, it rotates and scrapes on the outside of the fixed plate 3. When the plastic plate 23 is in a stationary state, it elastically expands from the compressed state and contacts the surface of the pier 4. The plastic plate 23 is made of rubber. When the horizontal plane is low, under the gravity of the support structure 116, the turbine structure 112 is pressed downward by the ring 114 to rotate and move, so that the plastic plate 23 moves from the outside of the pier 4 to the outside of the fixed plate 3, and there is a corner. However, under the gravity of the support structure 116, the plastic plate 23 is compressed, so that the plastic plate 23 is separated from the pier 4 to the corner outside the fixed plate 3, and then the plastic plate 23 is put into a compressed state again and elastically resists the outside of the fixed plate 3.

[0039] The support structure 116 includes a ball rod 31, a plane plate 32, and a circular groove 33. The ball rod 31 is arranged on the side of the plane plate 32, and the circular groove 33 is arranged in the middle of the plane plate 32 corresponding to the second screw 115. The ball rod 31 slides along the outer track of the fixed plate 3 and causes the ring 114 to lift the lower side of the plane plate 32. The limiting rod 111 is provided with a slide plate 41 and a connecting plate 42 . The connecting plate 42 is provided at the lower end of the slide plate 41 . The slide plate 41 is vertically connected to the lower end of the edge of the plane plate 32 , and the connecting plate 42 moves correspondingly inside the support plate 113 .

[0040] In addition, a first sliding groove corresponding to the ball rod 31 is provided at the outer side of the fixed plate 3, and a second sliding groove corresponding to the connecting plate 42 is provided inside the support plate 113. The connecting plate 42 is a convex structure, and the two sides of the bottom of the convex structure contact the second sliding groove inside the support plate 113 to prevent the connecting plate 42 from rubbing too much at the position of the second sliding groove inside the support plate 113 when the flat plate 32 is lifted upward. During the lifting process of the flat plate 32, the ball rod 31 slides upward along the first sliding groove on the outer side of the fixed plate 3, thereby lifting the flat plate 32 under force.

[0041] In the present invention, water flows into the cavity of the buffer mechanism 11 and the scraping mechanism 13 from the hollow structure at the bottom of the support frame 2, and the water flow on the outside of the enclosure 12 hits the soft strip 131 from the right, and then the soft strip 131 expands the gap to allow the water flow to enter the cavity of the buffer mechanism 11 and the scraping mechanism 13. When the water flow changes in height, the water flow will generate an upward and downward force to squeeze the scraping mechanism 13, so that after the rotating plate 321 and the rubber plate 323 are subjected to the force of water, the rotating plate 321 swings 30 degrees left and right with the rotating rod 322 as the center, and at the same time, the rotating plate 321 presses against the inner side of the enclosure 12 and the outer side of the fixed plate 3 under the elastic force of the spring 324, and the inner side of the enclosure 12 is pressed against the inner side of the enclosure 12 while swinging. The scraping mechanism 13 is used to scrape off the attachments on the outside of the fixed plate 3, and when the scraping mechanism 13 swings, it drives the triangular bar 102 at the outer end of the circular block 134 to scrape off the hollow groove 101 at the gap position outside the fixed plate 3, so that the attachments on the hollow groove 101 at the gap position outside the fixed plate 3 are cleaned, so that the water flows to the left in the cavity of the buffer mechanism 11 and the scraping mechanism 13, and drives some smaller attachments after removal to be discharged from the gap between the soft bars 131, and larger attachments are discharged from the hollow structure at the bottom of the support frame 2 as the water flow drops at low tide, thereby cleaning and scraping off the attachments and preventing the attachments from being adsorbed on the fixed plate 3 and the protective mechanism 1.

[0042] In the present invention, when the water flow height rises and falls, the water flow will also impact the plastic plate 23 in the turbine structure 112, and rotate under the buoyancy of the foam plate 22, so that the two turbine structures 112 below are impacted by the water flow and rotate in a certain range along the direction of the second screw 115, and scrape off the attachments on the outside of the support plate 113 and the fixed plate 3 through the sponge block 21. When the water flow rises, the spiral ring 24 of the turbine structure 112 at the top rotates upward along the second screw 115 through the threaded structure and is lifted up by the ring 114. The flat plate 32 in the support structure 116, at this time, the slide plate 41 and the connecting plate 42 at the lower end of the flat plate 32 move in the first slide groove in the support plate 113, so that when the flat plate 32 is lifted, it slides on the outside of the fixed plate 3 through the ball rod 31, and then the uppermost turbine structure 112 is separated from the outside of the fixed plate 3 and moves upward, and under the support of the support structure 116, the uppermost turbine structure 112 is rotated to scrape off the attachments on the outside of the pier 4, to prevent the position separated from the fixed plate 3 from being easily adsorbed by attachments after the water level rises, thereby increasing the burden on the pier 4.

[0043] The above description is merely a preferred embodiment of the present invention and therefore cannot be used to limit the scope of the present invention. In other words, equivalent changes and modifications made according to the scope of the present invention and the contents of the specification should still fall within the scope of the present invention.

Claims

1. An immersion corrosion protection device for a municipal bridge, characterized in that: It includes a protection mechanism, a support frame, a fixing plate and a bridge pier. The protection mechanism is provided with a first screw. The fixing plate is fixed to the outside of the bridge pier by the first screw. The fixing plates are distributed in an annular manner on the outside of the bridge pier. The protective mechanism is further provided with a buffer mechanism, a surrounding plate and a scraping mechanism. The buffer mechanism and the scraping mechanism are distributed in an annular array on the outside of the fixed plate. The surrounding plate is fixed in an annular manner to the side of the support frame and is fixed to the outside of the fixed plate through the support frame. The scraping mechanism and the buffer mechanism are adjacent to each other in an annular manner. The bottom of the support frame is provided with a hollow structure distributed in an annular manner. Water flows from the bottom of the support frame into the cavity of the buffer mechanism and the scraping mechanism, and the scraping mechanism is caused to swing under the flow of water. The buffer mechanism is provided with a limit rod, a turbine structure, a support plate, a ring, a second screw and a support structure. The support plate is connected in parallel to the outside of the fixed plate through a support frame. The bottom of the second screw is fixed to the surface of the support frame. A limit rod is provided at the lower end of the outside of the support structure. The support structure moves on the track in the support plate through the limit rod. There are three turbine structures. The top turbine structure moves spirally with the second screw, and the turbine structure drives the ring to lift the support structure upward.

2. The immersion corrosion protection device for a municipal bridge according to claim 1 is characterized in that: The scraping mechanism is provided with a soft strip, a rotating structure, a limiting plate and a circular block. The circular block is arranged on the side of the rotating structure. The middle of the rotating structure rotates on the inner side of the enclosure. The limiting plate is fixed between two adjacent fixed plates. The circular block passes through the middle of the limiting plate and is rotated by the limiting plate, and the circular block is pressed against the outer side of the pier. The contact part between the middle of the rotating structure and the inner side of the enclosure is in a left and right open state, so that it can rotate 30° up and down on the inner side of the enclosure. The soft strip is arranged on the side of the enclosure, and there is a gap between the soft strips between adjacent enclosures. The water flow impacts the soft strip and expands the gap to enter the internal cavity of the scraping mechanism.

3. The immersion corrosion protection device for a municipal bridge according to claim 2, characterized in that: The rotating structure is provided with a rotating plate, a rotating rod, a rubber plate and a spring. The spring is located inside the rubber plate, and both ends of the spring are fixed to the side of the rotating plate. The rotating plate is connected to the side of the rotating rod, and a hinge rod is provided at the connection. The rotating plate swings on the side of the rotating rod through the hinge rod, and the rotating plate is pressed against the inner side of the enclosure under the elastic force of the spring.

4. The immersion corrosion protection device for a municipal bridge according to claim 3 is characterized in that: A triangular bar is provided on the outside of the circular block, and a hollow groove is provided between adjacent fixed plates. The triangular bar is arranged on the circular block on one side corresponding to the hollow groove. There are four triangular bars, which are symmetrically distributed. When the circular block swings and rotates, the triangular bars are driven to elastically scrape the hollow groove position.

5. The immersion corrosion protection device for a municipal bridge according to claim 4, characterized in that: The turbine structure is provided with a sponge block, a foam plate, a plastic plate and a spiral ring. The plastic plate is arranged obliquely on the outside of the spiral ring, the foam plate is fixed on the inside of the plastic plate, the sponge block is arranged on the outside of the plastic plate, and a threaded structure is provided on the inside of the spiral ring. The spiral ring rotates along the second screw through the threaded structure.

6. The immersion corrosion protection device for a municipal bridge according to claim 5, characterized in that: The support structure is provided with a ball rod, a plane plate and a circular groove, wherein the ball rod is arranged on the side of the plane plate, and the circular groove corresponds to a second screw rod arranged in the middle of the plane plate, and the ball rod slides along the outer track of the fixed plate and causes the circular ring to lift the lower side of the plane plate; The limiting rod is provided with a slide plate and a connecting plate. The connecting plate is arranged at the lower end of the slide plate. The slide plate is vertically connected to the lower end of the edge of the plane plate, and the connecting plate moves correspondingly inside the supporting plate.

Images