Anti-seismic bridge steel structure

Abstract

The invention relates to the field of steel structures, in particular to an anti-seismic bridge steel structure which comprises a connecting rod, round holes are formed in structural steel on the two sides, the connecting rod is arranged in the round holes, abutting pieces are slidably connected to the two ends of the connecting rod, one sides of the abutting pieces abut against the structural steel, and nut pieces are arranged on the other sides of the abutting pieces. The nut piece is connected to the connecting rod in a threaded mode, a compression spring is connected between the nut piece and the abutting piece in an abutting mode, and a plurality of spring pieces are installed on the connecting rod. Through the moving nut piece, the compression spring which is continuously compressed can push the locking assembly to move, the spring piece is evenly expanded towards the periphery, the center shaft of the connecting rod coincides with the axis of the structural steel circular hole, and the compression spring pushes the locking assembly to lock the center shaft of the connecting rod to the center position of the circular hole. The outer coating of the connecting rod is prevented from being abraded by the hole wall when the bridge vibrates, so that the service life of the pull rod is guaranteed, and the later maintenance cost of the bridge is reduced.

Description

Technical Field

[0001] The invention relates to the field of steel structures, in particular to an earthquake-resistant bridge steel structure. Background Art

[0002] Bridge steel structure, that is, the main load-bearing structure of the bridge is made of steel structure. It usually has the characteristics of light weight, high strength, good earthquake resistance, fast construction speed, etc. In addition, steel structure bridges are easy to transform, such as reinforcement, heightening, widening the road surface, etc., and the changes are relatively easy and flexible.

[0003] The steel structure of a bridge includes many different types of structural parts, including the steel structure tie rod of the bridge, which is a connecting element in the bridge structure used to bear the deadweight of the bridge and the tensile stress of the external load. It receives the load of the beam in the form of tension by connecting different structures, and transmits it to the support at the bottom of the bridge to ensure the stability and safety of the bridge. The tie rod includes a connecting rod and fixings and springs on both sides. The connecting rod is placed in it through an opening. Due to weather reasons, it is necessary to spray a coating on the connecting rod. The spray coating prevents rain from falling on it and causing the connecting rod to rust, and avoids the tie rod from breaking, which leads to an increase in the later maintenance cost of the bridge. Among them, the patent application with patent publication number CN105780641A provides a rigid The three-section hinged arch bridge hanger system of the tie rod combined with the flexible cable, through the design of lateral constraint components and spherical bearings, effectively solves the problem of micro-wear between the tube wall and the steel tie rod caused by additional stress generated by factors such as bridge displacement, temperature, and dynamic load, and the problem of steel tie rod breakage caused by long-term action. However, when the two bridges are connected, the connection needs to have a certain buffering capacity to improve the seismic performance of the bridge. However, the above structure needs to limit the position of the tie rod, and the steel structure connected by the two structural steel levers will swing back and forth during long-term use, which will rub the lever, causing the coating on the surface of the lever to be scratched, and the tie rod will rust and corrode after rainwater drips for a long time, resulting in increased later maintenance costs of the bridge.

[0004] Therefore, an earthquake-resistant steel bridge structure is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide an earthquake-resistant bridge steel structure to solve the problem that in order to improve the earthquake resistance of the bridge, the connection needs to have a certain buffering capacity, so that the steel structure connected to the lever swings back and forth during long-term use, rubbing the lever, causing the coating on the surface of the lever to be scratched, and the pull rod becomes rusty and corroded after rainwater drips for a long time, which increases the subsequent maintenance cost of the bridge.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The nut sheet is threadably connected to the support frame of the invention and is adapted to engage with the support frame of the invention when the nut sheet is in engagement with the support frame.

[0008] Rotate the nut piece, and the moving nut piece will drive the compression spring to be compressed, so that the continuously compressed compression spring will push the locking assembly to move, and the pushing assembly will push the spring piece to expand all around. Because the spring piece is evenly expanded all around, the middle connecting rod will be in the center of the round hole. After the spring piece cannot move, the locking assembly will operate, and the locking assembly will lock the central axis of the connecting rod in the center of the round hole to ensure that the connecting rod does not abut against the side wall of the round hole after installation, so as to avoid the hole wall scratching the outer coating of the connecting rod when the bridge vibrates, thereby ensuring the long-term use of the pull rod and the overall life of the bridge. At the same time, the method of positioning the connecting rod before locking it greatly improves the convenience of construction personnel during operation.

[0009] Preferably, the pushing assembly includes a fixed ring, a connecting plate, a limiting ring, a pushing column and a pushing ring. A fixed ring is sleeved on the connecting rod, and the spring sheet is fixedly installed on the fixed ring. A plurality of connecting plates are fixedly installed on one side of the fixed ring. The connecting plate is arranged in a circular shape on the fixed ring. A limiting ring is fixedly installed on the side of the connecting plate away from the fixing ring. A plurality of holes are opened on the limiting ring. A pushing column is slidably connected in the circular hole. A pushing ring is fixedly installed on one end of the pushing column, and the pushing ring abuts against the plurality of spring sheets.

[0010] The locking assembly will drive the abutment plate to move because the abutment plate abuts against the limit ring. Of course, before the abutment plate tightly pushes the limit ring to adhere to the outer wall of the structural steel, the abutment plate will first push the push column to move, and the continuously moving push ring will squeeze the spring plate, causing the spring plate to continuously expand to the surroundings, so that the distance between each spring plate and the inner wall of the circular hole is also equal, and the fixing ring is mounted on the connecting rod, so the distance between the center point of the connecting rod and the inner wall of the circular hole on the same horizontal plane is equal, that is, the center axis of the connecting rod coincides with the center axis of the circular hole. When installing the pull rod, the push ring is pushed to expand the spring plate to position the connecting rod, which not only ensures the accurate positioning of the pull rod but also ensures the convenience of the construction personnel in positioning the pull rod.

[0011] Preferably, the locking assembly includes a locking ring, an annular block, and a silicone ring. A plurality of groups of arc grooves are provided on the abutment plate, and the radius of the arc grooves in each group is different. A locking ring is provided on the side of the abutment plate away from the limiting ring. A plurality of annular blocks are fixedly installed on the locking ring. A silicone ring is fixedly installed between the locking ring and the limiting ring. One end of the compression spring abuts against the locking ring. When the silicone ring is in an expanded state, the annular block is nested in the arc groove. When the silicone ring is in a compressed state, the annular block passes through the arc groove. The end of the annular block away from the fixed ring is in a pointed cone shape.

[0012] When the spring sheet cannot move after opening to all sides, the compression spring will squeeze the locking ring, causing the silicone ring to be flattened and the locking ring to continue to move. The continuously moving locking ring will push the annular block fixed on it to pass through the multiple sets of arc grooves on the abutment sheet and abut against the structural steel to prevent the locking ring from shaking. The position of the connecting rod is adjusted when the pull rod is installed by rotating the nut sheet and the adjusted position is locked. While ensuring the convenience of installation, make sure that the connecting rod is adjusted to the center position before locking.

[0013] Preferably, a pulling block is abutted on the outer wall of the spring sheet, and the pulling block is located on the side of the spring sheet away from the pushing ring. The pulling block is arranged in an arc shape, and multiple pulling blocks are provided and arranged in a circular shape on the connecting rod. Connecting blocks are fixedly installed between the two sides of the pulling block and the pushing ring.

[0014] Because the fixing ring and spring sheet need to be replaced after long-term use to avoid serious wear and tear over a long period of time that may cause damage to the connecting rod. During replacement, the spring sheet will unfold on the inner wall of the circular hole, making it difficult to remove the fixing ring and the spring sheet. Therefore, the unfolded spring sheet needs to be recovered when taking it out so that it is close to the surface of the connecting rod. Therefore, by pulling the push column backward, the push column drives the spring sheet to contract, and the fixing ring can be taken out of the circular hole through the contraction of the spring sheet. At the same time, when the spring sheet is put in, the pulling block can be used to prevent it from expanding. The expansion and tightening of the spring sheet can be controlled by the rise and contraction of the push ring, thereby improving the convenience of using the spring sheet.

[0015] Preferably, the cross-section of the connecting plate is arc-shaped, the pushing ring is slidably connected to the connecting plate, a baffle is provided on the outer side of the limiting ring, the baffle is provided with a through hole, the limiting ring is slidably connected in the through hole, a limiting groove is provided on the inner wall of the through hole, an annular protrusion is provided on the outer wall of the limiting ring, the annular protrusion is slidably connected in the limiting groove, a rubber ring is abutted between the inner wall of the limiting groove and the annular protrusion, and the rubber ring is arranged in the limiting groove.

[0016] Because the limiting ring has no protrusion, the limiting ring cannot be further squeezed through the limiting groove, so that the limiting ring has a certain amount of activity space in the limiting groove under the action of the rubber ring. In the later disassembly process, the spring sheet may be stuck on the inner wall of the round hole due to rust and other reasons, resulting in the spring sheet being unable to shrink. Therefore, the spring sheet needs to be moved backward for a certain distance to facilitate the recovery of the spring sheet, making it more convenient to replace the internal spring sheet.

[0017] Preferably, a limiting plate is fixedly installed at one end of the pushing column, and a groove is provided on the abutment plate. When the abutment plate is in contact with the baffle, the limiting plate slides in the groove. A circumferentially arranged card is provided on the inner wall of the groove. The card is fixedly installed on the inner wall of the groove. After the limiting plate enters the groove, the card is engaged with the limiting plate.

[0018] The pushing column will enter the groove because of the groove on the abutment plate, and the inner wall of the groove will continue to push the pushing column to move. Of course, before the limiting plate enters the groove, it will push the card installed on the inner wall of the groove to open, so that the limiting plate can pass through the card. But at the same time, after the limiting plate moves away from the card, the card will return to its original position due to elasticity. At this time, the card can jam the entering limiting plate, so that when the compression spring is released to pull the locking ring and the abutment plate, the spring plate can be taken out of the round hole, which greatly improves the convenience of later maintenance for the operator.

[0019] Preferably, the fixing ring and the limiting ring are both provided with a plurality of annular grooves, and soft collars are placed in the annular grooves, and the soft collars are sleeved on the connecting rod. By installing the soft collars on the fixing ring and the limiting ring, the connecting rod can support them, and the displacement of the fixing ring and the limiting ring will not cause wear to the coating of the connecting rod, further improving the service life of the pull rod.

[0020] Preferably, the spring sheet is spliced ​​from a variety of materials, including a soft iron sheet, spring steel and carbon steel, one side of the spring steel is spliced ​​with the soft iron sheet, and the other side is spliced ​​with the carbon steel, and one side of the soft iron sheet is welded to a fixing ring.

[0021] When workers rotate the nut plate for pre-tightening, they will push the push ring to move at the same time. The spring steel has strong elasticity, causing the compression of the compression spring to exceed the expected bearing range. A larger compression is required to push the push ring to move, resulting in the structural steel being unable to produce the corresponding displacement under the expected vibration. Therefore, the use of soft iron plates makes it easier for the spring plates to be pushed and moved by the push ring. At the same time, because the structural steel will produce a certain amount of displacement, the spring plate will produce a small amount of wear. After a period of use, the spring plate will be damaged. Therefore, carbon steel is added to one side of the spring steel to improve the overall wear resistance of the spring plate.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The moving nut sheet will push the compression spring to compress, so that the continuously compressed compression spring will push the locking assembly to move, so that the spring sheet is evenly stretched out to the surroundings, so that the central axis of the connecting rod coincides with the axis of the circular hole of the structural steel. After the spring sheet cannot move, the compression spring pushes the locking assembly to lock the central axis of the connecting rod in the center position of the circular hole, ensuring that the connecting rod does not abut against the side wall of the circular hole after installation, avoiding the hole wall from wearing the outer coating of the connecting rod when the bridge vibrates, thereby ensuring the service life of the pull rod and reducing the later maintenance cost of the bridge.

[0024] 2. Because the silicone ring will be in place before the spring sheet is unfolded and will not shrink, and the silicone ring will shrink when the spring sheet cannot continue to expand after it is unfolded, so that the annular block passes through multiple sets of arc grooves on the abutment sheet and abuts against the structural steel to lock it. When the pull rod is installed by rotating the nut sheet, the position of the connecting rod is adjusted and the adjusted position is locked, so that the position of the connecting rod can be adjusted by rotating the nut sheet and the adjusted connecting rod can be locked, ensuring the convenience of the operator during installation.

[0025] 3. The card has a certain elasticity, which will jam the entering limit piece, so that when the compression spring is loosened to pull the locking ring and the abutment plate, the push column will be pulled together to move. The moving push column drives the pulling block to move, and the unfolded spring piece is recovered. By recycling, the spring piece is prevented from continuing to abut against the inner wall of the circular hole. At this time, the spring piece can be easily taken out of the circular hole, which greatly improves the convenience of later maintenance for operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the three-dimensional structure of the connecting rod in the present invention;

[0028] Figure 3 It is a schematic diagram of the internal structure of the abutment sheet in the present invention;

[0029] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0030] Figure 5 for Figure 3 A schematic diagram of the enlarged structure at B in the middle;

[0031] Figure 6 Schematic diagram of the split structure of the silica gel ring in the present invention;

[0032] Figure 7 Schematic diagram of the internal structure of the baffle in the present invention;

[0033] Figure 8 for Figure 7 Schematic diagram of the enlarged structure at C in the middle;

[0034] Fig. 9 It is a structural schematic diagram of the spring sheet in the present invention.

[0035] In the figure: 1. structural steel; 2. connecting rod; 3. round hole; 4. spring sheet; 401. soft iron sheet; 402. spring steel; 403. carbon steel; 5. abutment sheet; 6. silicone ring; 7. locking ring; 8. compression spring; 9. nut sheet; 10. fixing ring; 11. connecting plate; 12. push ring; 13. push column; 14. pulling block; 15. connecting block; 16. limiting ring; 17. baffle; 18. arc groove; 19. annular clamping block; 20. soft sleeve ring; 21. through hole; 22. rubber ring; 23. limiting sheet; 24. annular protrusion; 25. groove; 26. card; 27. hole; 28. limiting groove. DETAILED DESCRIPTION

[0036] See also Figures 1 to 9 The present invention provides a seismic-resistant bridge steel structure, and the technical solution is as follows:

[0037] A seismic-resistant bridge steel structure comprises a connecting rod 2 and a structural steel 1. Circular holes 3 are opened on the structural steels 1 on both sides. The connecting rod 2 is arranged in the circular holes 3. Both ends of the connecting rod 2 are slidably connected with abutting pieces 5. One side of the abutting piece 5 abuts with the structural steel 1. A nut piece 9 is provided on the other side of the abutting piece 5. The nut piece 9 is threadedly connected to the connecting rod 2. A compression spring 8 abuts between the nut piece 9 and the abutting piece 5. A plurality of spring pieces 4 are installed on the connecting rod 2. Four spring pieces 4 are provided and are distributed on the connecting rod 2 in a circular shape. A pushing assembly is installed on the connecting rod 2. The pushing assembly is connected to one side of the abutting piece 5. A locking assembly is provided on the other side of the abutting piece 5. The locking assembly abuts with the compression spring 8. When the nut piece 9 is rotated to move for connection and fixing, the compression spring 8 pushes the pushing assembly to move through the locking assembly and the abutting piece 5. The pushing assembly pushes the plurality of spring pieces 4 to open, so that the axis of the connecting rod 2 coincides with the axis of the circular hole 3. The nut piece 9 continues to be rotated so that it pushes the limiting assembly to pass through the abutting piece 5 and abut against the structural steel 1.

[0038] Before use, the connecting rod 2 needs to pass through the circular holes 3 opened on the two structural steels 1. After the locking components and the limit components are put on the two ends, the nut plate 9 is rotated. The continuously rotating nut plate 9 will move to one side, and the moving nut plate 9 will drive the compression spring 8 to be compressed, so that the continuously compressed compression spring 8 will push the locking component to move. Because the locking component is connected to the pushing component, the pushing component will be opened first, and the pushing component will push the spring sheet 4 to open around. Because the spring sheet 4 is evenly opened around, the middle connecting rod 2 will be in the central position of the circular hole 3, so that the central axis of the connecting rod 2 coincides with the axis of the circular hole 3 of the structural steel 1. After the spring sheet 4 cannot move, the locking component is operated, and the locking component locks the central axis of the connecting rod 2 in the central position of the circular hole 3, ensuring that the connecting rod 2 does not abut against the side wall of the circular hole 3 after installation, avoiding the hole wall from scratching the outer coating of the connecting rod 2 when the bridge vibrates, ensuring the long-term use of the pull rod and the overall life of the bridge, and at the same time, the method of first positioning the connecting rod 2 and then locking it greatly improves the convenience of construction personnel during operation.

[0039] The pushing assembly includes a fixed ring 10, a connecting plate 11, a limiting ring 16, a pushing column 13, and a pushing ring 12. The fixing ring 10 is sleeved on the connecting rod 2, and the spring sheet 4 is fixedly installed on the fixing ring 10. A plurality of connecting plates 11 are fixedly installed on one side of the fixing ring 10. The connecting plates 11 are arranged in a circular shape on the fixing ring 10. A limiting ring 16 is fixedly installed on the side of the connecting plate 11 away from the fixing ring 10. A plurality of holes 27 are opened on the limiting ring 16. The pushing column 13 is slidably connected in the hole 27. A pushing ring 12 is fixedly installed on one end of the pushing column 13, and the pushing ring 12 abuts against a plurality of spring sheets 4.

[0040] When in use, push the pushing assembly into the circular hole 3 so that the limiting ring 16 abuts against the outer wall of the structural steel 1, and the continuously compressed compression spring 8 will push the locking assembly to move, and the locking assembly will drive the abutting piece 5 to move. Because the abutting piece 5 abuts against the limiting ring 16, the abutting piece 5 will push the limiting ring 16 to stick tightly to the outer wall. Of course, before the abutting piece 5 pushes the limiting ring 16 to stick tightly to the outer wall of the structural steel 1, the abutting piece 5 will first push the pushing column 13 to move. After the pushing column 13 moves, it will drive the pushing ring 12 fixed on the other side to move. Because the limiting ring 16 is blocked by the outer wall of the circular hole 3, it cannot enter the circular hole 3, and one side of the connecting plate 11 is fixed to the limiting ring 16, so that the fixing ring 10 fixed on the other side of the connecting plate 11 cannot The push ring 12 is used to push the spring sheet 4 so that the spring sheet 4 is continuously stretched out in all directions. Since the moving direction of the push ring 12 is limited, the angle at which the spring sheet 4 is pushed out by the push ring 12 is also fixed, so that the distance between each spring sheet 4 and the inner wall of the circular hole 3 is also equal. The fixing ring 10 is sleeved on the connecting rod 2, so that the distance between the center point of the connecting rod 2 and the inner wall of the circular hole 3 on the same horizontal plane is equal, that is, the center axis of the connecting rod 2 coincides with the center axis of the circular hole 3. When the pull rod is installed, the push ring 12 is pushed to stretch the spring sheet 4 to position the connecting rod 2, which ensures that the pull rod can be accurately positioned and the construction personnel can be conveniently positioned when positioning the pull rod.

[0041] The spring sheet 4 is made of a variety of materials, including a soft iron sheet 401, a spring steel 402 and a carbon steel 403. One side of the spring steel 402 is spliced ​​with the soft iron sheet 401, and the other side is spliced ​​with the carbon steel 403. One side of the soft iron sheet 401 is welded to the fixing ring 10.

[0042] Although the spring steel 402 has the elasticity to move, it can ensure that the connecting rod 2 can return to its original position when the steel structure vibrates, which shows that it has strong elasticity. When the worker rotates the nut plate 9 for pre-tightening, it will push the push ring 12 to move at the same time. The elasticity of the spring steel 402 is strong, resulting in the compression of the compression spring 8 exceeding the expected bearing range. A larger compression amount is required to push the push ring 12 to move, resulting in the structural steel 1 being unable to produce the corresponding displacement under the expected vibration. Therefore, the use of soft iron sheet 401 makes it easier for the spring sheet 4 to be pushed and moved by the push ring 12. At the same time, because the structural steel 1 will produce a certain amount of displacement, the spring sheet 4 will produce a small amount of wear. After a period of use, the spring sheet 4 will be damaged. Therefore, carbon steel 403 is added on one side of the spring steel 402 to improve the overall wear resistance of the spring sheet 4.

[0043] The locking assembly includes a locking ring 7, an annular block 19, and a silicone ring 6. A plurality of groups of arc grooves 18 are provided on the abutting plate 5. The radius of the arc groove 18 of each group is different. A locking ring 7 is provided on the side of the abutting plate 5 away from the limiting ring 16. A plurality of annular blocks 19 are fixedly installed on the locking ring 7. A silicone ring 6 is fixedly installed between the locking ring 7 and the limiting ring 16. One end of the compression spring 8 abuts against the locking ring 7. When the silicone ring 6 is in an expanded state, the annular block 19 is nested in the arc groove 18. When the silicone ring 6 is in a compressed state, the annular block 19 passes through the arc groove 18. The end of the annular block 19 away from the fixing ring 10 is in a pointed cone shape.

[0044] When the spring sheet 4 is opened to all sides and cannot move, the compression spring 8 will squeeze the locking ring 7, so that the silicone ring 6 is flattened, causing the locking ring 7 to continue to move. The continuously moving locking ring 7 will push the annular clamping block 19 fixed thereon to pass through the multiple groups of arc grooves 18 on the abutment sheet 5 and abut against the structural steel 1. Because the end of the annular clamping block 19 away from the fixed ring 10 is a pointed cone, and the surface of the structural steel 1 is relatively rough, it can be stuck on the particles on the surface of the structural steel 1, increasing the friction between the pull rod and the structural steel 1, preventing the locking ring 7 from shaking, and making the connected abutment sheet 5 and connecting rod 2 relatively close. Fixed state to avoid friction of the connecting rod 2. Of course, when the silicone ring 6 is in the expanded state, the annular block 19 is nested in the arc groove 18 to ensure that the annular block 19 can pass through the arc groove 18 smoothly when the compression spring 8 is squeezed. The position of the connecting rod 2 is adjusted when the pull rod is installed by rotating the nut plate 9, and the adjusted position is locked. While ensuring the convenience of installation, ensure that the adjusted connecting rod 2 can be in the center position after the pull rod is installed, so that the distance between the connecting rod 2 and the inner wall of the circular hole 3 is equal, so that the spring sheet 4 can be evenly stressed, thereby ensuring the service life of the spring sheet 4 and indirectly improving the service life of the pull rod.

[0045] A pulling block 14 is abutted against the outer wall of the spring sheet 4. The pulling block 14 is located on the side of the spring sheet 4 away from the pushing ring 12. The pulling block 14 is arranged in an arc shape. There are multiple pulling blocks 14 and they are arranged in a circular shape on the connecting rod 2. Connecting blocks 15 are fixedly installed between the two sides of the pulling block 14 and the pushing ring 12.

[0046] Because the fixing ring 10 and the spring sheet 4 need to be replaced after long-term use to avoid serious wear and tear over a long period of time that may cause damage to the connecting rod 2. During replacement, the spring sheet 4 will be unfolded on the inner wall of the circular hole 3, making it difficult to remove the fixing ring 10 and the spring sheet 4. Therefore, the unfolded spring sheet 4 needs to be recovered when it is taken out so that it is close to the surface of the connecting rod 2. Therefore, when it needs to be recovered, the nut sheet 9 is rotated in the opposite direction to make the compression spring 4 away from the locking ring 7. The pushing column 13 is pulled backward to make the pushing column 13 drive the spring sheet 4 to contract. The fixing ring 10 can be taken out of the circular hole 3 through the contraction of the spring sheet 4. At the same time, when the spring sheet 4 is put in, the pulling block 14 can be used to squeeze the spring sheet 4 to prevent it from expanding. The expansion and tightening of the spring sheet 4 are controlled by the extension and contraction of the pushing ring 12, thereby improving the convenience of replacing the spring sheet 4.

[0047] The cross-section of the connecting plate 11 is arranged in an arc shape, the pushing ring 12 is slidably connected to the connecting plate 11, a baffle plate 17 is sleeved on the outer side of the limiting ring 16, a through hole 21 is opened on the baffle plate 17, the limiting ring 16 is slidably connected in the through hole 21, a limiting groove 28 is opened on the inner wall of the through hole 21, an annular protrusion 24 is arranged on the outer wall of the limiting ring 16, the annular protrusion 24 is slidably connected in the limiting groove 28, a rubber ring 22 is abutted between the inner wall of the limiting groove 28 and the annular protrusion 24, and the rubber ring 22 is arranged in the limiting groove 28.

[0048] Because the compression spring 8 will squeeze the locking ring 7, the abutment sheet 5 will also squeeze the limiting ring 16 and the baffle 17 sleeved on the outside thereof, so that the limiting ring 16 and the baffle 17 will be tightly attached to the inner wall of the structural steel 1, so that the limiting ring 16 has a certain movable space in the limiting groove 28 under the action of the rubber ring 22. In the later disassembly process, the spring sheet 4 may be stuck on the inner wall of the circular hole 3 due to various reasons such as rust, resulting in the spring sheet 4 being unable to shrink. Therefore, the spring sheet 4 needs to be moved backward for a distance to facilitate the recovery of the spring sheet 4, making it more convenient to replace the internal spring sheet 4.

[0049] A limiting plate 23 is fixedly installed at one end of the push column 13, and a groove 25 is opened on the abutment plate 5. When the abutment plate 5 is in contact with the baffle 17, the limiting plate 23 slides in the groove 25. A circumferentially arranged card 26 is provided on the inner wall of the groove 25. The card 26 is fixedly installed on the inner wall of the groove 25. After the limiting plate 23 enters the groove 25, the card 26 is engaged with the limiting plate.

[0050] When the abutment sheet 5 moves and pushes the pushing column 13 forward, the pushing column 13 will drive the pushing ring 12 to move, and the moving pushing ring 12 will push the multiple spring sheets 4 away. When the abutment sheet 5 pushes the pushing column 13 to move, the pushing column 13 will enter the groove 25 because of the groove 25 provided on the limiting sheet. Because the depth in the groove 25 is limited, the inner wall of the groove 25 will continue to push the pushing column 13 to move. Of course, before the limiting sheet enters the groove 25, it will push the card 26 installed on the inner wall of the groove 25 to open, so that the limiting sheet can pass through the card 26, but at the same time, after the limiting sheet 23 moves away from the card 26, the card 26 will return to its original position due to elasticity. At this time, the card 26 can jam the entering limiting sheet 23, so that when the compression spring 8 is released to pull the locking ring 7 and the abutment plate, the spring sheet 4 can be taken out of the round hole 3, which greatly improves the convenience of the operator's later maintenance.

[0051] A plurality of annular grooves are formed on the fixing ring 10 and the limiting ring 16 , and a soft collar 20 is placed in each of the annular grooves. The soft collar 20 is sleeved on the connecting rod 2 .

[0052] By installing the soft sleeve ring 20 on the fixing ring 10 and the limiting ring 16, the connecting rod 2 can support them. At the same time, the displacement of the fixing ring 10 and the limiting ring 16 will not cause wear to the coating of the connecting rod 2, further improving the service life of the pull rod.

[0053] Before use, pass the connecting rod 2 through the circular holes 3 opened on the two structural steels 1, put the pushing components connected by the fixing rings 10 on both ends, put the abutment plate on the connecting rod 2, and finally put the compression spring 8 on, and rotate the nut plate 9. The continuously rotating nut plate 9 will move to one side, and the moving nut plate 9 will drive the compression spring 8 to be compressed.

[0054] At this time, the continuously compressed compression spring 8 will push the locking ring 7 to move. Because the silicone ring 6 is provided, it will first push the abutment sheet 5 to move. Because the abutment sheet 5 abuts against the limit ring 16, the abutment sheet 5 will push the limit ring 16 to tightly adhere to the outer wall. Of course, before the abutment sheet 5 tightly pushes the limit ring 16 to adhere to the outer wall of the structural steel 1, the abutment sheet 5 will first push the push column 13 to move, and the push column 13 will drive the push ring 12 to move. When the abutment sheet 5 pushes the push column 13 to move, the push column 13 will enter the groove 25 because of the groove 25 provided on the abutment sheet 5. Because the depth of the groove 25 is limited, the inner wall of the groove 25 will continue to push the push column 13 to move.

[0055] After the push column 13 moves, it will drive the push ring 12 fixed on the other side to move. Because the limit ring 16 is blocked by the outer wall of the circular hole 3, it cannot enter the circular hole 3, and one side of the connecting plate 11 is fixed to the limit ring 16, so that the fixing ring 10 fixed on the other side of the connecting plate 11 cannot move, and the continuously moving push ring 12 will squeeze the spring sheet 4, so that the spring sheet 4 will continue to expand to the surroundings. Because the moving direction of the push ring 12 is limited, the angle at which the spring sheet 4 is pushed and expanded by the push ring 12 is also fixed, so that the distance from each spring sheet 4 to the inner wall of the circular hole 3 is also equal, and the fixing ring 10 is also mounted on the connecting rod 2, so that the center point of the connecting rod 2 on the same horizontal plane is equal to each position of the inner wall of the circular hole 3, that is, the center axis of the connecting rod 2 coincides with the center axis of the circular hole 3, and the connecting rod 2 is positioned by pushing the push ring 12 to expand the spring sheet 4 when installing the pull rod.

[0056] When the spring sheet 4 is opened to all sides and cannot move, the compression spring 8 will squeeze the locking ring 7, so that the silicone ring 6 is flattened, causing the locking ring 7 to continue to move. The continuously moving locking ring 7 will push the annular block 19 fixed thereon to pass through the multiple groups of arc grooves 18 on the abutment sheet 5 and abut against the structural steel 1. Because the end of the annular block 19 away from the fixed ring 10 is in a pointed cone shape 23, and the surface of the structural steel 1 is relatively rough, it can be stuck on the particles on the surface of the structural steel 1, thereby increasing the friction between the pull rod and the structural steel 1 and preventing the locking ring 7 from shaking.

[0057] After long-term use, the fixing ring 10 and the spring sheet 4 need to be replaced to prevent them from being severely worn for a long time and causing damage to the connecting rod 2. When replacing, the nut sheet 9 is rotated in the opposite direction to make the compression spring 8 move away from the locking ring 7. Because the rubber ring 22 is installed, the limit ring 16 can move a certain distance. At this time, the annular protrusion 24 is pressed forward, and the annular protrusion 24 drives the spring sheet 4 on the fixing ring 10 to move through the connecting plate 11, so that the spring sheet 4 moves backward for a distance, which is convenient for the spring sheet 4 to be recovered, making it more convenient to replace the internal spring sheet 4.

[0058] Before entering the groove 25, the limiting piece 23 will push the card 26 installed on the inner wall of the groove 25 to open, so that the limiting piece 23 can pass through the card 26. But at the same time, after the limiting piece 23 moves away from the card 26, the card 26 will return to its original position due to elasticity. At this time, the card 26 can block the entering limiting piece 23, so that when the compression spring 8 is released to pull the locking ring 7 and the abutment plate, the connected pushing column 13 will also move accordingly. When the pushing column 13 is pulled to move backward, the pushing column 13 drives the spring sheet 4 to contract. The fixing ring 10 can be taken out of the circular hole 3 by the contraction of the spring sheet 4. At the same time, when the spring sheet 4 is put in, it can also be prevented from being stretched out by the pulling block 14. The expansion and tightening of the spring sheet 4 can be controlled by the growth and contraction of the pushing ring 12.

[0059] A specific embodiment of the present invention is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above described embodiment. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments without departing from the principles and ideas of the present invention should still fall within the scope of protection of the present invention.

Claims

1. An earthquake-resistant bridge steel structure, comprising a connecting rod (2) and a structural steel (1), wherein the structural steel (1) is provided with a circular hole (3) on both sides, the connecting rod (2) is arranged in the circular hole (3), both ends of the connecting rod (2) are slidably connected with abutment plates (5), one side of the abutment plate (5) abuts against the structural steel (1), and the other side of the abutment plate (5) is provided with a nut plate (9), the nut plate (9) is threadedly connected to the connecting rod (2), and a compression spring (8) abuts against the nut plate (9) and the abutment plate (5), characterized in that: A plurality of spring sheets (4) are installed on the connecting rod (2). There are four spring sheets (4) which are distributed in a circle on the connecting rod (2). A pushing assembly is installed on the connecting rod (2). The pushing assembly is connected to one side of the abutting sheet (5). A locking assembly is provided on the other side of the abutting sheet (5). The locking assembly abuts against a compression spring (8). When the nut sheet (9) is rotated to move for connection and fixation, the compression spring (8) pushes the pushing assembly to move through the locking assembly and the abutting sheet (5). The pushing assembly pushes the plurality of spring sheets (4) to open, so that the axis of the connecting rod (2) coincides with the axis of the circular hole (3). The nut sheet (9) is continuously rotated so that it pushes the locking assembly to pass through the abutting sheet (5) and abut against the structural steel (1).

2. The earthquake-resistant steel bridge structure according to claim 1, characterized in that The pushing assembly comprises a fixing ring (10), a connecting plate (11), a limiting ring (16), a pushing column (13), and a pushing ring (12); the fixing ring (10) is sleeved on the connecting rod (2); the spring sheet (4) is fixedly mounted on the fixing ring (10); a plurality of connecting plates (11) are fixedly mounted on one side of the fixing ring (10); the connecting plates (11) are arranged on the fixing ring (10) in a circular shape; a limiting ring (16) is fixedly mounted on a side of the connecting plate (11) away from the fixing ring (10); a plurality of holes (27) are formed on the limiting ring (16); a pushing column (13) is slidably connected in the holes (27); a pushing ring (12) is fixedly mounted on one end of the pushing column (13); the pushing ring (12) abuts against the plurality of spring sheets (4).

3. The earthquake-resistant steel bridge structure according to claim 2 is characterized in that The locking assembly comprises a locking ring (7), an annular clamping block (19), and a silicone ring (6). The contact plate (5) is provided with a plurality of groups of arc grooves (18), and the radius of the arc grooves (18) of each group is different. A locking ring (7) is provided on the side of the contact plate (5) away from the limiting ring (16). A plurality of annular clamping blocks (19) are fixedly installed on the locking ring (7). A silicone ring (6) is fixedly installed between the locking ring (7) and the limiting ring (16). One end of the compression spring (8) is in contact with the locking ring (7). When the silicone ring (6) is in an expanded state, the annular clamping block (19) is nested in the arc groove (18). When the silicone ring (6) is in a compressed state, the annular clamping block (19) passes through the arc groove (18). The end of the annular clamping block (19) away from the fixing ring (10) is in a pointed cone shape.

4. The earthquake-resistant steel bridge structure according to claim 2, characterized in that A pulling block (14) is abutted against the outer wall of the spring sheet (4). The pulling block (14) is located on the side of the spring sheet (4) away from the pushing ring (12). The pulling block (14) is arranged in an arc shape. The pulling block (14) is provided with a plurality of blocks and is arranged in a circular shape on the connecting rod (2). Connecting blocks (15) are fixedly installed between the two sides of the pulling block (14) and the pushing ring (12).

5. The earthquake-resistant steel bridge structure according to claim 4, characterized in that The cross section of the connecting plate (11) is arranged in an arc shape, the pushing ring (12) is slidably connected to the connecting plate (11), a baffle (17) is sleeved on the outer side of the limiting ring (16), the baffle (17) is provided with a through hole (21), the limiting ring (16) is slidably connected in the through hole (21), a limiting groove (28) is provided on the inner wall of the through hole (21), an annular protrusion (24) is provided on the outer wall of the limiting ring (16), the annular protrusion (24) is slidably connected in the limiting groove (28), a rubber ring (22) is abutted between the inner wall of the limiting groove (28) and the annular protrusion (24), and the rubber ring (22) is arranged in the limiting groove (28).

6. The earthquake-resistant steel bridge structure according to claim 5, characterized in that A limiting plate (23) is fixedly installed at one end of the push column (13), and a groove (25) is provided on the contact plate (5). When the contact plate (5) is in contact with the baffle (17), the limiting plate (23) slides in the groove (25). A card (26) is arranged circumferentially on the inner wall of the groove (25). The card (26) is fixedly installed on the inner wall of the groove (25). When the limiting plate (23) enters the groove (25) and moves backward, the card (26) is engaged with the limiting plate (23).

7. The earthquake-resistant steel bridge structure according to claim 3 is characterized in that The fixing ring (10) and the limiting ring (16) are provided with a plurality of annular grooves, and a soft sleeve ring (20) is placed in each of the annular grooves, and the soft sleeve ring (20) is sleeved on the connecting rod (2).

8. The earthquake-resistant steel bridge structure according to claim 2, characterized in that The spring sheet (4) is spliced ​​together from a variety of materials, including a soft iron sheet (401), a spring steel (402) and a carbon steel (403). One side of the spring steel (402) is spliced ​​with the soft iron sheet (401), and the other side is spliced ​​with the carbon steel (403). One side of the soft iron sheet (401) is welded to the fixing ring (10).

Images