Anti-seismic reinforcing connecting piece for steel structure joints

Abstract

The invention relates to the technical field of building equipment, and particularly discloses a steel structure node anti-seismic reinforcing connecting piece which comprises a fixing piece and a bolt, a mounting hole is formed in the outer surface of the fixing piece in a penetrating mode, an anti-seismic assembly is arranged on the rear side of the fixing piece, and the anti-seismic assembly comprises a containing groove formed in the rear side of the fixing piece in an embedded mode. A hinge piece is arranged on the inner side of the storage groove, the storage groove is movably connected with an overturning plate through the hinge piece, the inner surface of the storage groove is slidably connected with a push plate, the anti-seismic assembly is arranged, the folding plate is extruded through cooperation of movement of the push plate and the storage groove, and the overturning plate can make contact with the outer surface of the stand column when rotating; therefore, the friction force between the overturning plate and the stand column can be effectively increased, the vibration amplitude between the steel structure stand column and the cross beam can be effectively reduced, the risk of looseness between connecting joints of the stand column and the cross beam can be reduced, and the structural stability and safety of the steel structure can be effectively improved.

Description

Technical Field

[0001] This invention relates to the field of building equipment technology, and in particular to a seismic-resistant reinforcement connector for steel structure nodes. Background Technology

[0002] Steel structure is a building structure system made primarily of steel. It consists of components such as steel profiles and steel plates connected by welds, bolts, or rivets. It has advantages such as high strength, light weight, high degree of industrialization, and short construction period. Steel structure nodes are the connection points between various components in a steel structure. Their function is to reliably connect components such as beams, columns, and supports, transmit internal forces, and ensure the integrity and stability of the structure.

[0003] For example, Chinese patent CN222685699U discloses a steel structure node connector for building construction. This steel structure node connector effectively improves the structural strength at the node by positioning the steel structure beam vertically. The design of the installation groove makes it easier to insert the steel beam. With the use of two sets of fastening components, the positioning of the steel beam can be completed quickly, which helps to speed up the construction progress. Existing steel structure connectors can improve construction efficiency and overall stability of the steel structure. However, the connectors are often installed and fixed to the steel beams and columns using bolts. During long-term use, the steel structure is affected by wind and ground vibration, which can cause the bolts of the connectors to loosen or even fall off. This not only affects the connection stability of the steel structure nodes, but also has an adverse impact on the overall building safety of the steel structure. Summary of the Invention

[0004] The purpose of this invention is to provide a seismic reinforcement connector for steel structure nodes. By rotating the flip plate, it comes into contact with the outer surface of the column, which can effectively increase the friction between the flip plate and the column, thereby effectively reducing the vibration amplitude between the steel structure column and the beam, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a seismic reinforcement connector for steel structure nodes, comprising a fastener and bolts, wherein the fastener has a through-hole on its outer surface, and a seismic component is provided on the rear side of the fastener, the seismic component comprising a storage groove embedded on the rear side of the fastener, a hinge is provided on the inner side of the storage groove, a flip plate is movably connected to the storage groove through the hinge, a push plate is slidably connected to the inner surface of the storage groove, a folding plate is fixedly connected to the lower outer surface of the push plate, a traction belt is fixedly connected to the lower outer surface of the push plate, and a friction block is fixedly connected to the lower end of the traction belt.

[0006] Preferably, the outer surface of the rear end of the fixing member is embedded with a traction groove, the friction block is located inside the traction groove and slides in contact with the inner surface of the traction groove, the outer surface of the friction block is embedded with an anti-slip groove, the number of the anti-slip grooves is several groups and distributed in a parallel array, and the friction block is made of wear-resistant elastic material.

[0007] Preferably, the hinge includes a pin fixedly connected to the inner surface of the storage slot, the upper side of the flip plate is rotatably connected to the pin, the outer surface of the folding plate is wavy and made of elastic material, the lower end of the folding plate is fixedly connected to the inner surface of the storage slot, the traction belt passes through the upper and lower ends of the folding plate and slides in contact with the folding plate, and the outer surface of the front end of the flip plate is in contact with the folding plate.

[0008] Preferably, a washer is provided between the fastener and the bolt, and an anti-loosening component is provided between the washer and the bolt. The anti-loosening component includes a base plate fixedly connected to the outer surface of the bolt, and a positioning block is fixedly connected to the outer surface of the rear end of the base plate. Both the base plate and the positioning block are annular.

[0009] Preferably, a slot is embedded in the outer surface of the front end of the washer, and a moving plate is fixedly connected to the inner surface of the slot. The moving plate has a U-shaped structure and is made of elastic material. A clamping seat is fixedly connected to the outer surface of the moving plate. The clamping seat is located inside the slot and slides in contact with the inner surface of the slot. The clamping seats are symmetrically distributed on both sides of the positioning block.

[0010] Preferably, the outer surface of the fixing member is fixedly connected with a reinforcing rib, the outer surface of the fixing member is right-angled, the number of clamping seats and moving plates are several sets and distributed in a ring array, the outer surface of the clamping seat is embedded with a positioning groove, the positioning groove is semi-circular, the outer surface of the positioning block is provided with an arc-shaped protrusion, the clamping seat and the positioning block are engaged and contacted, and the groove cross-section is T-shaped.

[0011] Preferably, a positioning component is provided on the inner side of the fixing member. The positioning component includes a limiting groove embedded in the inner side of the fixing member, a limiting rod slidably connected to the inner side of the limiting groove, a limiting hole embedded in the outer surface of the bolt, a number of limiting holes arranged in a ring array, a through hole through the outer surface of the limiting rod, a guide plate fixedly connected to the upper side of the inner surface of the through hole, and the lower end of the limiting rod engaging with the limiting hole.

[0012] Preferably, a pressing rod is slidably connected to the outer surface of the fixing member. The outer surface of the pressing rod is conical. The rear end of the pressing rod is located inside the through hole. The outer surface of the pressing rod is in sliding contact with the lower outer surface of the guide plate. A buffer plate is fixedly connected to the outer surface of the pressing rod. A buffer groove is embedded in the inner side of the fixing member. The buffer plate is located inside the buffer groove and is in sliding contact with the inner surface of the buffer groove. A spring is fixedly connected to the outer surface of the buffer plate. The side of the spring away from the buffer plate is fixedly connected to the inner surface of the buffer groove. A baffle is fixedly connected to the outer surface of the front end of the pressing rod.

[0013] Preferably, a clamping assembly is provided between the fixing member and the washer. The clamping assembly includes a fixing tube fixedly connected to the outer surface of the front end of the fixing member. The outer surface of the fixing tube is conical. A pressure crack is opened through the outer surface of the fixing tube. The number of pressure cracks is several groups and they are distributed in a ring array. The fixing tube is made of elastic material.

[0014] Preferably, a through groove is embedded in the outer surface of the rear end of the washer, and a fixing rod is fixedly connected to the front side of the inner surface of the through groove. The outer surface of the fixing rod slides in contact with the inner wall of the fixing tube. An extrusion block is fixedly connected to the inner surface of the through groove. The outer surface of the extrusion block is arc-shaped and distributed in a ring shape. The outer surface of the fixing rod is conical.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This solution uses anti-seismic components. The movement of the push plate, in conjunction with the storage groove, compresses the folding plate. When the flipping plate rotates, it comes into contact with the outer surface of the column, which effectively increases the friction between the flipping plate and the column. This effectively reduces the vibration amplitude between the steel structure column and the beam, helps to reduce the risk of loosening at the connection nodes between the column and the beam, and thus effectively improves the structural stability and safety of the steel structure. 2. This solution, by setting up anti-loosening components and setting up several sets of ring-shaped arrayed clamping seats, can lock and fix the positioning block in different directions, thereby ensuring a stable locking contact between the bolt and the washer. This effectively reduces the risk of the bolt falling off due to vibration and helps to further improve the seismic resistance of the steel structure joints. 3. This solution, by setting up a clamping component, uses the extrusion block in conjunction with the fixing tube to lock and limit the position of the washer, thereby keeping the washer in a stable position. This helps reduce the risk of the washer rotating between the fastener and the bolt, and further reduces the risk of the bolt loosening and falling off due to vibration of the steel structure. In this way, it can effectively improve the installation stability of the steel structure fastener. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ; Figure 3 This is a top view of the overall structure of the present invention; Figure 4 For the present invention Figure 3 Sectional view along line AA; Figure 5 For the present invention Figure 3 Sectional view along the BB direction; Figure 6 For the present invention Figure 5 Enlarged view of point C in the middle; Figure 7 For the present invention Figure 5 Enlarged view of point D; Figure 8 For the present invention Figure 4 Enlarged view of point E in the middle; Figure 9 For the present invention Figure 7 Enlarged diagram at point F; Figure 10 This is a schematic diagram of the fastener and beam-column structure of the present invention.

[0018] Explanation of reference numerals in the attached figures: 11. Fixing component; 12. Mounting hole; 13. Bolt; 14. Reinforcing rib; 15. Traction groove; 16. Friction block; 17. Anti-slip groove; 18. Traction belt; 19. Limiting hole; 20. Limiting groove; 21. Limiting rod; 22. Through hole; 23. Guide plate; 24. Buffer groove; 25. Spring; 26. Buffer plate; 27. Extrusion rod; 28. Baffle; 29. ​​Washer; 30. Positioning block; 31. Base plate; 32. Slot; 33. Moving plate; 34. Clamping seat; 35. Positioning groove; 36. Storage groove; 37. Pin; 38. Push plate; 39. Flipping plate; 40. Folding plate; 41. Through groove; 42. Fixing tube; 43. Extrusion block; 44. Fixing rod; 45. Pressure crack. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1 to 10 The present invention provides a technical solution: A seismic reinforcement connector for steel structure nodes includes a fastener 11 and bolts 13. The fastener 11 has a through mounting hole 12 on its outer surface. A seismic component is provided on the rear side of the fastener 11. The seismic component includes a storage groove 36 embedded on the rear side of the fastener 11. A hinge is provided on the inner side of the storage groove 36. A flip plate 39 is movably connected to the storage groove 36 through the hinge. A push plate 38 is slidably connected to the inner surface of the storage groove 36. A folding plate 40 is fixedly connected to the lower outer surface of the push plate 38. A traction belt 18 is fixedly connected to the lower outer surface of the push plate 38. A friction block 16 is fixedly connected to the lower end of the traction belt 18.

[0021] The outer surface of the rear end of the fixing member 11 is provided with a traction groove 15. The friction block 16 is located inside the traction groove 15 and slides in contact with the inner surface of the traction groove 15. The outer surface of the friction block 16 is provided with an anti-slip groove 17. The number of anti-slip grooves 17 is several groups and they are distributed in a parallel array. The friction block 16 is made of wear-resistant elastic material.

[0022] The hinge includes a pin 37 fixedly connected to the inner surface of the storage slot 36. The upper side of the flip plate 39 is rotatably connected to the pin 37. The outer surface of the folding plate 40 is wavy and made of elastic material. The lower end of the folding plate 40 is fixedly connected to the inner surface of the storage slot 36. The traction belt 18 passes through the upper and lower ends of the folding plate 40 and slides in contact with the folding plate 40. The outer surface of the front end of the flip plate 39 is in contact with the folding plate 40.

[0023] By adopting the above technical solution, when using the seismic reinforcement connector, bolts 13 pass through the mounting holes 12 on the surface of the fixing member 11 and are threadedly connected to the steel structure column and beam respectively, thereby installing the fixing member 11 at the connection node of the steel structure column and beam. At this time, the outer surface of the fixing member 11 is respectively attached to the outer surface of the column and beam, which helps to improve the structural strength at the steel structure column and beam. In order to further improve the seismic effect at the connection node of the column and beam, a seismic component is set. The traction groove 15 on the surface of the fixing member 11 is used to place the friction block 16. After the fixing member 11 is installed, the friction block 16 will contact the surface of the column. The anti-slip grooves 17 distributed in an array on the surface of the friction block 16 can effectively increase the friction between the fixing member 11 and the column. When the fixing member 11 and the column move relative to each other due to vibration, since the friction between the friction block 16 and the steel structure column is greater than the friction between the fixing member 11 and the steel structure, the friction block 16 and the column will move further together. Relative sliding will occur between the fixed parts 11. When the distance between the friction block 16 and the flip plate 39 increases, the friction block 16 will pull the push plate 38 through the traction belt 18. With the movement of the push plate 38, the storage groove 36 will squeeze the folding plate 40, thereby folding the wavy folding plate 40 and causing the folding plate 40 to undergo elastic deformation. The storage groove 36 supports the rotation of the flip plate 39 through the pin 37. At this time, the folding plate 40 will contact the outer surface of the flip plate 39 and push the flip plate 39, thereby causing the flip plate 39 to flip outward of the storage groove 36 with the pin 37 as the fulcrum. Through the rotation of the flip plate 39, it will contact the outer surface of the column, thereby effectively increasing the friction between the flip plate 39 and the column, thereby effectively reducing the vibration amplitude between the steel structure column and the beam, helping to reduce the risk of loosening between the column and beam connection nodes, and thus effectively improving the structural stability and safety of the steel structure.

[0024] Specifically, such as Figure 5 and Figure 7 As shown, a washer 29 is provided between the fastener 11 and the bolt 13, and an anti-loosening component is provided between the washer 29 and the bolt 13. The anti-loosening component includes a base plate 31 fixedly connected to the outer surface of the bolt 13, and a positioning block 30 is fixedly connected to the outer surface of the rear end of the base plate 31. Both the base plate 31 and the positioning block 30 are annular.

[0025] The outer surface of the front end of the washer 29 is embedded with a slot 32. A moving plate 33 is fixedly connected to the inner surface of the slot 32. The moving plate 33 has a U-shaped structure and is made of elastic material. A clamping seat 34 is fixedly connected to the outer surface of the moving plate 33. The clamping seat 34 is located inside the slot 32 and slides in contact with the inner surface of the slot 32. The clamping seats 34 are symmetrically distributed on both sides of the positioning block 30.

[0026] The outer surface of the fixing member 11 is fixedly connected with a reinforcing rib 14. The outer surface of the fixing member 11 is right-angled. The number of clamping seats 34 and moving plates 33 are several sets and arranged in a ring array. The outer surface of the clamping seat 34 is embedded with a positioning groove 35. The positioning groove 35 is semi-circular. The outer surface of the positioning block 30 is provided with an arc-shaped protrusion. The clamping seat 34 and the positioning block 30 are engaged and contacted. The slot 32 has a T-shaped cross-section.

[0027] By adopting the above technical solution, after the fastener 11 is installed by the bolt 13, in order to reduce the risk of the bolt 13 loosening and falling off, an anti-loosening component is set between the bolt 13 and the fastener 11. When installing the fastener 11, the washer 29 is put on the outside of the bolt 13, so that the washer 29 is located between the bolt 13 and the fastener 11. Then the operator turns the bolt 13. During the rotation of the bolt 13, the positioning block 30 will rotate synchronously through the base plate 31. The groove 32 on the surface of the washer 29 is used to slide and support the clamping seat 34. The two sets of clamping seats 34 will come together under the elastic force of the moving plate 33. As the positioning block 30 moves towards the... As the slot 32 slides inside, the outer surface of the positioning block 30 gradually comes into contact with the clamping seat 34. When the arc-shaped protrusion on the surface of the positioning block 30 moves to the positioning groove 35 on the surface of the clamping seat 34, the clamping seat 34 will engage with the outside of the positioning block 30. At this time, the positioning groove 35 will cover the protrusion on the surface of the positioning block 30. By setting several sets of clamping seats 34 arranged in a ring array, the positioning block 30 can be engaged and fixed in different directions, thereby ensuring a stable engagement contact between the bolt 13 and the washer 29. This effectively reduces the risk of the bolt 13 falling off due to vibration and helps to further improve the seismic resistance of the steel structure joint.

[0028] Specifically, such as Figure 5 and Figure 6 As shown, a positioning component is provided on the inner side of the fixing member 11. The positioning component includes a limiting groove 20 embedded in the inner side of the fixing member 11. A limiting rod 21 is slidably connected to the inner side of the limiting groove 20. A limiting hole 19 is embedded on the outer surface of the bolt 13. The number of limiting holes 19 is several groups and they are distributed in a ring array. A through hole 22 is provided through the outer surface of the limiting rod 21. A guide plate 23 is fixedly connected to the upper side of the inner surface of the through hole 22. The lower end of the limiting rod 21 is engaged with the limiting hole 19.

[0029] A pressing rod 27 is slidably connected to the outer surface of the fixing member 11. The outer surface of the pressing rod 27 is conical. The rear end of the pressing rod 27 is located inside the through hole 22. The outer surface of the pressing rod 27 is in sliding contact with the lower outer surface of the guide plate 23. A buffer plate 26 is fixedly connected to the outer surface of the pressing rod 27. A buffer groove 24 is embedded in the inner side of the fixing member 11. The buffer plate 26 is located inside the buffer groove 24 and is in sliding contact with the inner surface of the buffer groove 24. A spring 25 is fixedly connected to the outer surface of the buffer plate 26. The side of the spring 25 away from the buffer plate 26 is fixedly connected to the inner surface of the buffer groove 24. A baffle 28 is fixedly connected to the outer surface of the front end of the pressing rod 27.

[0030] By adopting the above technical solution, in order to further improve the connection stability between bolt 13 and fastener 11, a positioning component is set up. When bolt 13 passes through mounting hole 12, the lower end of limiting rod 21 will engage with the limiting hole 19 on the surface of bolt 13 under the action of gravity. Under the limiting action of limiting rod 21, bolt 13 can be prevented from rotating due to vibration, thereby effectively reducing the risk of loosening between fastener 11 and steel structure column, and further improving the fixing effect of steel structure connection node. The buffer groove 24 on the inner side of fastener 11 is used to place buffer plate 26. Spring 25 will apply a certain elastic force to buffer plate 26, thereby causing buffer plate 26 to drive pressing rod 27 to move away from limiting rod 21. Part of the pressing rod 27 The through hole 22 on the surface of the limiting rod 21, through the cooperation of the pressing rod 27 with the through hole 22, can lock and limit the limiting rod 21, thereby keeping the position of the limiting rod 21 stable. The baffle 28 on the surface of the pressing rod 27 can limit the limiting rod 21 to a certain extent. When the fixing part 11 is removed, the operator pushes the pressing rod 27 to one side of the limiting rod 21. At this time, the outer surface of the pressing rod 27 will contact the guide plate 23. The surface of the guide plate 23 is inclined. As the pressing rod 27 moves, the guide plate 23 will drive the limiting rod 21 to slide downward inside the limiting groove 20, thereby disengaging the lower end of the limiting rod 21 from the limiting hole 19 on the surface of the bolt 13, thereby releasing the locking and fixing of the bolt 13, allowing the bolt 13 to rotate under the action of external force.

[0031] Specifically, such as Figure 7 and Figure 9 As shown, a clamping assembly is provided between the fixing member 11 and the washer 29. The clamping assembly includes a fixing tube 42 fixedly connected to the outer surface of the front end of the fixing member 11. The outer surface of the fixing tube 42 is conical. A pressure crack 45 is opened through the outer surface of the fixing tube 42. The number of pressure cracks 45 is several groups and they are distributed in a ring array. The fixing tube 42 is made of elastic material.

[0032] The outer surface of the rear end of the washer 29 is embedded with a through groove 41. A fixing rod 44 is fixedly connected to the front side of the inner surface of the through groove 41. The outer surface of the fixing rod 44 is in sliding contact with the inner wall of the fixing tube 42. An extrusion block 43 is fixedly connected to the inner surface of the through groove 41. The outer surface of the extrusion block 43 is arc-shaped and distributed in a ring shape. The outer surface of the fixing rod 44 is conical.

[0033] By adopting the above technical solution, when the bolt 13 is tightened, it pushes the washer 29. At this time, the through groove 41 on the surface of the washer 29 is aligned with the fixing tube 42. As the washer 29 gradually moves, the fixing rod 44 inside the through groove 41 enters the fixing tube 42. The surface of the fixing rod 44 is conical. As the fixing rod 44 gradually moves, it squeezes the inner wall of the fixing tube 42, thereby causing the fixing tube 42 to produce a certain degree of elastic deformation. The pressure cracks 45 on the surface of the fixing tube 42 can reduce the fixing pressure to a certain extent. The deformation resistance of the tube 42 is such that as the fixed tube 42 gradually expands outward, the outer surface of the fixed tube 42 will come into contact with the extrusion block 43 inside the through groove 41. The extrusion block 43, in conjunction with the fixed tube 42, can lock and limit the position of the washer 29, thereby keeping the position of the washer 29 stable. This helps to reduce the risk of the washer 29 rotating between the fastener 11 and the bolt 13, and further reduces the risk of the bolt 13 loosening and falling off due to vibration of the steel structure. This effectively improves the installation stability of the steel structure fastener 11.

[0034] Working principle: When using the seismic reinforcement connector, the bolt 13 passes through the mounting hole 12 on the surface of the fastener 11, and the fastener 11 is installed at the connection node between the steel structure column and the beam. When the bolt 13 passes through the mounting hole 12, the lower end of the limiting rod 21 will engage with the limiting hole 19 on the surface of the bolt 13 under the action of gravity. Under the limiting action of the limiting rod 21, the bolt 13 can be prevented from rotating due to vibration, thereby effectively reducing the risk of loosening between the fastener 11 and the steel structure column. As the fixing rod 44 gradually moves, the fixing rod 44 will squeeze the inner wall of the fixing tube 42, thereby causing the fixing tube 42 to produce a certain degree of elastic deformation. As the fixing tube 42 gradually expands outward, the outer surface of the fixing tube 42 will contact the extrusion block 43 inside the through groove 41. Through the extrusion block 43 and the fixing tube 42, the washer 29 can be locked and limited, thereby keeping the position of the washer 29 stable. Under the elastic force of the moving plate 33, the holders 34 will come together, and the outer surface of the positioning block 30 will gradually come into contact with the holders 34. When the arc-shaped protrusion on the surface of the positioning block 30 moves to the positioning groove 35 on the surface of the holder 34, the holder 34 will engage with the outside of the positioning block 30. At this time, the positioning groove 35 will cover the protrusion on the surface of the positioning block 30. By setting several sets of ring-shaped array-distributed holders 34, the positioning block 30 can be engaged and fixed in different directions. The friction block 16 will pull the push plate 38 through the traction belt 18. With the movement of the push plate 38, the storage groove 36 will squeeze the folding plate 40. The folding plate 40 will come into contact with the outer surface of the flip plate 39 and push the flip plate 39, so that the flip plate 39 will flip outward of the storage groove 36 with the pin 37 as the fulcrum. This can effectively increase the friction between the flip plate 39 and the column, thereby effectively reducing the vibration amplitude between the steel structure column and the beam.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A seismic reinforcement connecting piece for a steel structure joint, comprising a fixing piece (11) and a bolt (13), characterized in that: The outer surface of the fixing part (11) is provided with a mounting hole (12), the rear side of the fixing part (11) is provided with an anti-vibration assembly, the anti-vibration assembly comprises a receiving groove (36) embedded in the rear side of the fixing part (11), the inner side of the receiving groove (36) is provided with a hinge part, the receiving groove (36) is movably connected with a turnover plate (39) through the hinge part, the inner surface of the receiving groove (36) is slidably connected with a push plate (38), the lower end of the push plate (38) is fixedly connected with a folding plate (40), the lower end of the push plate (38) is fixedly connected with a traction belt (18), and the lower end of the traction belt (18) is fixedly connected with a friction block (16).

2. The seismic strengthening connecting piece for a steel structure joint according to claim 1, characterized in that: The outer surface of the fixing part (11) is provided with a mounting hole (12), the rear side of the fixing part (11) is provided with an anti-vibration assembly, the anti-vibration assembly comprises a receiving groove (36) embedded in the rear side of the fixing part (11), the inner side of the receiving groove (36) is provided with a hinge part, the receiving groove (36) is movably connected with a turnover plate (39) through the hinge part, the inner surface of the receiving groove (36) is slidably connected with a push plate (38), the lower end of the push plate (38) is fixedly connected with a folding plate (40), the lower end of the push plate (38) is fixedly connected with a traction belt (18), and the lower end of the traction belt (18) is fixedly connected with a friction block (16).

3. The seismic strengthening connecting piece for a steel structure joint according to claim 2, characterized in that: The hinge part comprises a pin shaft (37) fixedly connected with the inner surface of the receiving groove (36), the upper side of the turnover plate (39) is rotatably connected with the pin shaft (37), the outer surface of the folding plate (40) is wavy and made of elastic material, the lower end of the folding plate (40) is fixedly connected with the inner surface of the receiving groove (36), the traction belt (18) penetrates through the upper and lower ends of the folding plate (40) and slidably contacts with the folding plate (40), and the outer surface of the front end of the turnover plate (39) contacts with the folding plate (40).

4. The seismic strengthening connecting piece for a steel structure joint according to claim 3, characterized in that: The fixing part (11) and the bolt (13) are provided with a gasket (29), the gasket (29) and the bolt (13) are provided with a anti-extraction assembly, the anti-extraction assembly comprises a bottom plate (31) fixedly connected with the outer surface of the bolt (13), the rear end of the bottom plate (31) is fixedly connected with a positioning block (30), and the bottom plate (31) and the positioning block (30) are both annular.

5. The seismic strengthening connecting piece of a steel structure joint according to claim 4, characterized in that: The outer surface of the fixing part (11) is provided with a mounting hole (12), the rear side of the fixing part (11) is provided with an anti-vibration assembly, the anti-vibration assembly comprises a receiving groove (36) embedded in the rear side of the fixing part (11), the inner side of the receiving groove (36) is provided with a hinge part, the receiving groove (36) is movably connected with a turnover plate (39) through the hinge part, the inner surface of the receiving groove (36) is slidably connected with a push plate (38), the lower end of the push plate (38) is fixedly connected with a folding plate (40), the lower end of the push plate (38) is fixedly connected with a traction belt (18), and the lower end of the traction belt (18) is fixedly connected with a friction block (16).

6. The seismic strengthening connecting piece of a steel structure joint according to claim 5, characterized in that: The outer surface of the fixing part (11) is fixedly connected with a reinforcing rib (14), the outer surface of the fixing part (11) is straight, the number of the clamping seat (34) and the movement plate (33) is several groups and is arranged in annular array, the outer surface of the clamping seat (34) is embedded with a positioning groove (35), the positioning groove (35) is semicircular, the outer surface of the positioning block (30) is provided with a circular protrusion, the clamping seat (34) and the positioning block (30) are in clamping contact, and the cross section of the clamping groove (32) is T-shaped structure.

7. The seismic strengthening connecting piece of a steel structure joint according to claim 6, characterized in that: The fixing member (11) is provided with a positioning component inside. The positioning component includes a limiting groove (20) embedded in the fixing member (11). A limiting rod (21) is slidably connected inside the limiting groove (20). A limiting hole (19) is embedded in the outer surface of the bolt (13). The number of limiting holes (19) is several groups and they are distributed in a ring array. A through hole (22) is provided through the outer surface of the limiting rod (21). A guide plate (23) is fixedly connected to the upper side of the inner surface of the through hole (22). The lower end of the limiting rod (21) is engaged with the limiting hole (19).

8. The seismic strengthening connecting piece of a steel structure joint according to claim 7, characterized in that: The outer surface of the fixing member (11) is slidably connected to a pressing rod (27). The outer surface of the pressing rod (27) is conical. The rear end of the pressing rod (27) is located inside the through hole (22). The outer surface of the pressing rod (27) is in sliding contact with the lower outer surface of the guide plate (23). A buffer plate (26) is fixedly connected to the outer surface of the pressing rod (27). A buffer groove (24) is embedded in the inner side of the fixing member (11). The buffer plate (26) is located inside the buffer groove (24) and is in sliding contact with the inner surface of the buffer groove (24). A spring (25) is fixedly connected to the outer surface of the buffer plate (26). The side of the spring (25) away from the buffer plate (26) is fixedly connected to the inner surface of the buffer groove (24). A baffle (28) is fixedly connected to the outer surface of the front end of the pressing rod (27).

9. The seismic strengthening connecting piece of a steel structure joint according to claim 8, characterized in that: A clamping assembly is provided between the fixing member (11) and the washer (29). The clamping assembly includes a fixing tube (42) fixedly connected to the outer surface of the front end of the fixing member (11). The outer surface of the fixing tube (42) is conical. A pressure crack (45) is opened through the outer surface of the fixing tube (42). The number of pressure cracks (45) is several groups and they are distributed in a ring array. The fixing tube (42) is made of elastic material.

10. The seismic strengthening connecting piece of a steel structure joint according to claim 9, characterized in that: The outer surface of the rear end of the washer (29) is embedded with a through groove (41). A fixing rod (44) is fixedly connected to the front side of the inner surface of the through groove (41). The outer surface of the fixing rod (44) slides in contact with the inner wall of the fixing tube (42). An extrusion block (43) is fixedly connected to the inner surface of the through groove (41). The outer surface of the extrusion block (43) is arc-shaped and distributed in a ring shape. The outer surface of the fixing rod (44) is conical.

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