Anti-loosening structure of steel structure connecting joint and mounting process

Abstract

The invention discloses an anti-loosening structure of a steel structure connecting joint and a mounting process, and relates to the field of anti-loosening connecting structures, the anti-loosening structure comprises a steel frame and a connecting bolt, the steel frame connecting joint is sleeved with a mounting sleeve, a buckle is arranged on the side face of the mounting sleeve to protect the connecting bolt, an elastic plate is arranged to abut against the side wall of the steel frame, and the anti-loosening structure is further provided with an angle deflection device associated with the steel frame. The steel frame connecting joint is provided with a reinforcing structure, the steel frame connecting joint is convenient to install, the connecting bolt is passively protected, and an active pre-tightening mechanism which is driven by the fact that the associated steel frame deflects under the dynamic load effect is further arranged. When the angle of the steel frame changes due to the dynamic load effect, driving acting force in one direction is applied to the connecting bolt through the amplification lever, active pre-tightening of the connecting bolt is conducted, sacrifice of the connecting bolt on a passive anti-loosening structure is compensated, and the dilemma that the existing anti-loosening effect is in direct proportion to the disassembling difficulty is avoided.

Description

Technical Field

[0001] The present invention provides an anti-loosening structure, which relates to the field of anti-loosening connection structures, and particularly relates to an anti-loosening structure and installation process for steel structure connection nodes. Background Art

[0002] With the progress of technology, many buildings or structures now use steel structures as the main load-bearing structures. The connection nodes of steel structures are connected by welding, bolt connection or composite connection to form a stable whole.

[0003] Anti-loosening structures are usually set at node connections to prevent the vibration of connection bolts caused by dynamic loads. Existing anti-loosening structures mainly include friction anti-loosening, mechanical anti-loosening and permanent anti-loosening. The anti-loosening effect is proportional to the disassembly difficulty, but there is generally a problem of lack of self-adjusting ability, that is, during use, it only decays with the use time, and cannot buffer the acting force with the change of dynamic loads and perform self-tightening adjustment.

[0004] Therefore, those skilled in the art have proposed an anti-loosening structure and installation process for steel structure connection nodes, which are designed to be convenient for installation and use, effectively prevent the connection from loosening, and can have a certain buffer space under the action of repeated dynamic loads, and use dynamic loads to pre-tighten the bolts. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an anti-loosening structure and installation process for steel structure connection nodes, which are designed to be convenient for the installation and use of steel structure connection nodes, effectively protect the connection bolts, prevent the bolts from loosening, and can have a certain buffer space under the action of repeated dynamic loads, and use dynamic loads to pre-tighten the bolts to ensure the safety and reliability of steel structure connection nodes.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: An anti-loosening structure for a steel structure connection node includes a steel frame and connection bolts provided at the connection node. The installation connection of the steel frame connection node is carried out through the connection bolts. Such a traditional connection node usually sets an anti-loosening mechanism on the side of the connection bolt to resist the loosening caused by the long-term action of dynamic loads on the steel frame. The use effect of such a passive anti-loosening mechanism is proportional to the disassembly difficulty, which is not conducive to the maintenance of the equipment.

[0007] An installation sleeve is fixed on the side of the end of the steel frame, and relevant anti-loosening protection mechanisms are provided on the installation sleeve to facilitate the rapid installation of the steel frame connection node.

[0008] A buckle is hinged on the side of the installation sleeve. The buckle clamps and protects the connecting bolt, which can significantly reduce problems such as corrosion of the connecting bolt caused by environmental influence. In addition, the buckle limits the extension length of the connecting bolt, thereby realizing the anti-loosening effect on the connecting bolt.

[0009] An elastic plate is arranged on the side of the installation sleeve. The elastic plate conducts force by fitting against the side wall of the steel frame, senses the dynamic load change of the steel frame connection node through the elastic plate, and timely conducts the acting force to the load-bearing structure to buffer problems such as deformation of the connection node.

[0010] A pressing block is slidably arranged inside the buckle. The pressing block presses and limits the connecting bolt. The pressing block pressing and limiting the connecting bolt can, to a certain extent, avoid the loosening of the bolt caused by long-term dynamic load.

[0011] A spring is arranged on the side of the installation sleeve. The spring conducts the dynamic load to apply a squeezing and pre-tightening effect on the connecting bolt, realizes pre-tightening the connecting bolt through the action of the dynamic load on the steel frame, replaces passive anti-loosening with active pre-tightening, not only makes the anti-loosening effect better, but also can reduce the maintenance difficulty to a certain extent, and avoids the dilemma that the anti-loosening effect and the disassembly difficulty are proportional in the prior art.

[0012] Preferably, an installation groove is formed on the side of the installation sleeve. The connecting bolt is fixed to the installation sleeve through the installation groove. When installing the steel frame connection node, the installation of the installation sleeve at the installation node is also completed, and the equipment installation difficulty is low.

[0013] A screw rod is fixed on the side of the installation sleeve. The elastic plate is slidably installed on the side of the installation sleeve through the screw rod. The screw rod cooperates with the installation groove to enable the elastic plate to change the installation position within a certain range to adapt to the installation and use of the anti-loosening structure for different steel structure connection nodes.

[0014] Preferably, an L-shaped plate is fixed inside the installation sleeve. When the steel frame connection node is subjected to dynamic load, the deformation of the L-shaped plate buffers the acting force received by the installation sleeve, avoids the problem of cracking of the closely fitting structure under the action of dynamic load, and obtains a buffering force by using the elastic force of the L-shaped plate to avoid the deformation of the steel frame structure.

[0015] A cross plate is fixed at the end of the installation sleeve. A hoop is sleeved on the side of the cross plate. The two cross plates are arranged on opposite sides of the steel frame through the hoop. At the connection node of the T-shaped steel structure, the two cross plates are tightened by the hoop to realize the pressing connection outside the connecting bolt, and also provide an installation basis for the anti-loosening structure.

[0016] Preferably, the buckle includes a U-shaped plate. One end of the U-shaped plate is hinged to the mounting sleeve. The U-shaped plate is the main structure of the buckle. The hinged U-shaped plate protects the connecting bolt and limits the height of the connecting bolt, that is, the anti-loosening effect. After the connecting bolt loosens and protrudes a certain height from the surface of the steel frame, the continuous loosening of the connecting bolt is restricted.

[0017] A clamping block is fixed on the side of the mounting sleeve corresponding to the U-shaped plate. By flipping the hinged U-shaped plate, the limit of the movable end of the U-shaped plate is realized through the clamping block to achieve buckling.

[0018] A push rod is inserted and arranged on the side of the U-shaped plate. By pressing the push rod, the U-shaped plate is disengaged from the limit of the clamping block, realizing the quick disassembly of the buckle.

[0019] Preferably, an adjusting screw rod is penetrated and connected by a bearing on the side of the buckle. The pressing block is threadedly connected to the adjusting screw rod. A convex block is fixed on the side of the pressing block. The pressing block is slidably connected to the buckle through the convex block. By rotating the adjusting screw rod, the pressing block is driven to advance along the buckle, thereby pressing the connecting bolt tightly, and preventing it from rotating and loosening due to dynamic load through the pressing force.

[0020] Preferably, a first gear is fixedly sleeved on the side of the connecting bolt. A rack is slidably arranged inside the buckle and meshes with the first gear. The rack is elastically pressed against the mounting sleeve to be associated with the angular deflection of the steel frame, and drives the rotation of the first gear.

[0021] When the steel frame connection node is subjected to dynamic load and undergoes connection deflection, the mounting sleeve changes its angle along with the steel frame. The mounting sleeve squeezes the spring, and then through the elastic force of the spring, a force along the direction of the buckle is applied to the rack. Through the meshing action between the rack and the first gear, the connecting bolt is pre-tightened, realizing the active anti-loosening of the steel structure connection node by using dynamic load.

[0022] Preferably, a magnifying lever is hinged on one side of the rack. The short arm end of the magnifying lever is associated with the rack, and the long arm end of the magnifying lever is associated with the deflection of the mounting sleeve. Through the magnifying lever, the deflection effect of the mounting sleeve is magnified to magnify the pre-tightening driving effect of the dynamic load on the connecting bolt received by the steel frame.

[0023] An extension rod is hinged on the side of the long arm end of the magnifying lever. The spring is elastically pressed inside the extension rod. One end of the extension rod away from the magnifying lever is pressed against the side of the mounting sleeve.

[0024] The extension rod can adjust the extension length to ensure the tight installation between the mounting sleeve and the amplifying lever. The angular deflection of the mounting sleeve is reflected by the extension rod to apply a force to the long arm end of the amplifying lever, and the deflection force is then amplified by the amplifying lever to drive the active pre-tightening of the connecting bolt.

[0025] Preferably, a second gear is provided on the side surface of the rack for meshing, and the short arm end of the amplifying lever meshes and drives the rack through the second gear. An engaging driving structure is also provided on the side surface of the mounting sleeve corresponding to the extension rod.

[0026] The second gear is provided to avoid angular deflection when the hinged amplifying lever acts, which makes it difficult to ensure the stability of the force applied to the rack. Therefore, the second gear is used as an intermediate transmission medium.

[0027] In addition, an engaging driving structure is also provided on the side of the mounting sleeve corresponding to the extension rod, which is used to drive the amplifying lever to advance in the direction of tightening the connecting bolt.

[0028] The present invention discloses an anti-loosening structure and installation process for a steel structure connection node, which has the following beneficial effects: 1. The anti-loosening structure and installation process of the steel structure connection node are as follows: a reinforcement structure is set at the connection node of the steel frame, which is not only conducive to the installation of the steel frame connection node and passively protects the connection bolts. An active pre-tightening mechanism is also set up to drive the deflection of the associated steel frame under the action of dynamic load. When the angle of the steel frame changes due to the dynamic load, the driving force in one direction is applied to the connection bolts by the amplifying lever to actively pre-tighten the connection bolts, compensate for the sacrifice of the connection bolts in the passive anti-loosening structure, and avoid the dilemma that the existing anti-loosening effect is proportional to the disassembly difficulty.

[0029] 2. The anti-loosening structure and installation process of the steel structure connection node: the elastic plate is slidably installed on the side of the installation sleeve through the installation groove and the screw. The installation position can be adjusted when using different connection nodes to ensure the transmission of force between adjacent steel frames at the connection node.

[0030] 3. The anti-loosening structure and installation process of the steel structure connection node are simple and convenient. The installation sleeve is directly fixed and installed by connecting bolts. The hinged buckle on the side of the installation sleeve is turned over to form a protective effect on the connecting bolts. It can not only alleviate the rust of the connecting bolts affected by the environment, but also limit the height of the connecting bolts extending from the side wall of the steel frame. To a certain extent, it has an anti-retreat effect on the connecting bolts, preventing the connecting bolts from leaving the installation position and causing the collapse of the steel frame.

[0031] 4. The anti-loosening structure and installation process of the steel structure connection node. A pressing block is slidably arranged inside the U-shaped plate, and the pressing block is slidably adjusted by an adjusting screw rod to press against the connecting bolt, and the rotation and loosening of the connecting bolt are restricted through the pressing action.

[0032] 5. The anti-loosening structure and installation process of the steel structure connection node. A first gear is fixed on the side of the connecting bolt, a rack meshing with the first gear is slidably arranged inside the buckle, a second gear is meshed on one side of the rack, a magnifying lever is clamped on the side of the second gear, the magnifying lever is hinged with the installation sleeve, and the installation sleeve and the magnifying lever are connected through an extension rod. When the steel frame deflects at an angle under the action of dynamic load, not only can the L-shaped plate inside the installation sleeve buffer the influence of the acting force on the steel frame, but also a force in one direction is applied to the rack through the magnifying lever to actively pre-tighten the connecting bolt. A spring arranged inside the extension rod serves as a buffer structure to avoid damage to the transmission structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0034] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the installation of the side structure of the installation sleeve of the present invention; Figure 3 For the present invention Figure 2 The enlarged schematic diagram of the structure at A in; Figure 4 It is a schematic diagram of the pressing and driving structure of the connecting bolt by the inside of the installation sleeve of the present invention.

[0035] In the figure: 1. Steel frame; 2. Connecting bolt; 3. Installation sleeve; 4. Buckle; 401. U-shaped plate; 402. Block; 403. Push rod; 5. Elastic plate; 6. Pressing block; 7. Spring; 8. Installation groove; 9. Screw rod; 10. L-shaped plate; 11. Cross plate; 12. Hoop; 13. Adjusting screw rod; 14. Convex block; 15. First gear; 16. Rack; 17. Magnifying lever; 18. Extension rod; 19. Second gear. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] An anti-loosening structure and installation process for a steel structure connection node are disclosed in an embodiment of the present invention; According to the attached Figure 1 and the attached Figure 2 As shown, it includes a steel frame 1 and a connecting bolt 2 arranged at the connection node. The connection of the steel frame 1 at the connection node is installed and connected through the connecting bolt 2. In this traditional connection node, an anti-loosening mechanism is usually set on the side of the connecting bolt 2 to resist the loosening caused by the long-term action of dynamic loads on the steel frame 1. The use effect of this passive anti-loosening mechanism is proportional to the disassembly difficulty, which is not conducive to the maintenance of the equipment.

[0038] An installation sleeve 3 is fixed to the side of the end of the steel frame 1, and a relevant anti-loosening protection mechanism is set on the installation sleeve 3 to facilitate the rapid installation of the connection node of the steel frame 1.

[0039] A buckle 4 is hingedly arranged on the side of the installation sleeve 3. The buckle 4 fastens and protects the connecting bolt 2, which can significantly reduce problems such as corrosion of the connecting bolt 2 caused by environmental influence. In addition, the buckle 4 limits the extension length of the connecting bolt 2, thereby realizing the anti-loosening effect on the connecting bolt 2.

[0040] An elastic plate 5 is arranged on the side of the installation sleeve 3. The elastic plate 5 fits against the side wall of the steel frame 1 for force conduction. By sensing the dynamic load change of the connection node of the steel frame 1 through the elastic plate 5, the acting force is timely conducted to the load-bearing structure to buffer problems such as deformation of the connection node.

[0041] According to the attached Figure 2 、the attached Figure 3 and the attached Figure 4 As shown, a pressing block 6 is slidably arranged inside the buckle 4. The pressing block 6 presses and limits the connecting bolt 2. The pressing block 6 pressing and limiting the connecting bolt 2 can, to a certain extent, prevent the bolt from loosening due to long-term dynamic loads.

[0042] A spring 7 is arranged on the side of the installation sleeve 3. The spring 7 conducts the dynamic load to exert a squeezing and pre-tightening effect on the connecting bolt 2, realizing the pre-tightening of the connecting bolt 2 through the action of the dynamic load on the steel frame 1. Using active pre-tightening instead of passive anti-loosening not only makes the anti-loosening effect better, but also can reduce the maintenance difficulty to a certain extent, avoiding the dilemma that the anti-loosening effect of the prior art is proportional to the disassembly difficulty.

[0043] Preferably, an installation groove 8 is formed on the side surface of the installation sleeve 3, and the connecting bolt 2 is used to fix the installation sleeve 3 through the installation groove 8. When installing the connecting node of the steel frame 1, the connecting bolt 2 also completes the installation of the installation sleeve 3 at the installation node, reducing the difficulty of equipment installation.

[0044] A screw rod 9 is fixed on the side surface of the installation sleeve 3, and the elastic plate 5 is slidably installed on the side surface of the installation sleeve 3 through the screw rod 9. By cooperating with the installation groove 8 through the screw rod 9, the elastic plate 5 can change its installation position within a certain range to adapt to the installation and use of the anti-loosening structure for different steel structure connecting nodes.

[0045] Preferably, an L-shaped plate 10 is fixed inside the installation sleeve 3. When the connecting node of the steel frame 1 is subjected to dynamic loads, the deformation of the L-shaped plate 10 buffers the acting force received by the installation sleeve 3, avoiding the problem of cracking of the closely fitting structure under dynamic loads, and obtaining a buffering force by using the elastic force of the L-shaped plate 10 to prevent the deformation of the steel frame 1 structure.

[0046] A cross plate 11 is fixed at the end of the installation sleeve 3, and a hoop 12 is sleeved on the side surface of the cross plate 11. The two cross plates 11 are arranged on the opposite sides of the steel frame 1 through the hoop 12. At the connecting node of the T-shaped steel structure, the two cross plates 11 are tightened by the hoop 12 to realize the tight connection outside the connecting bolt 2, and also provide an installation basis for the anti-loosening structure.

[0047] Preferably, the buckle 4 includes a U-shaped plate 401. One end of the U-shaped plate 401 is hinged to the installation sleeve 3. The U-shaped plate 401 is the main structure of the buckle 4. The hinged U-shaped plate 401 has a protective effect on the connecting bolt 2 and also has a limiting effect on the height of the connecting bolt 2, that is, an anti-loosening effect. After the connecting bolt 2 loosens and protrudes a certain height from the surface of the steel frame 1, the continuous loosening of the connecting bolt 2 is restricted.

[0048] A block 402 is fixed on the side surface of the installation sleeve 3 corresponding to the U-shaped plate 401. By flipping the hinged U-shaped plate 401, the limit of the movable end of the U-shaped plate 401 is realized through the block 402 to achieve buckling.

[0049] A push rod 403 is inserted into the side surface of the U-shaped plate 401. By pressing the push rod 403, the U-shaped plate 401 is disengaged from the limit of the block 402, realizing the quick disassembly of the buckle 4.

[0050] Preferably, an adjusting screw rod 13 penetrates through and is connected to the buckle 4 by bearings on the side surface of the buckle 4. The tightening block 6 is threadedly connected to the adjusting screw rod 13. A convex block 14 is fixed on the side surface of the tightening block 6. The tightening block 6 is slidably connected to the buckle 4 through the convex block 14. By rotating the adjusting screw rod 13, the tightening block 6 is driven to advance along the buckle 4, and then the connecting bolt 2 is tightened. The rotation loosening due to dynamic loads is prevented through the tightening force.

[0051] Preferably, a first gear 15 is fixedly sleeved on the side surface of the connecting bolt 2. A rack 16 is meshed with the first gear 15 inside the buckle 4 and is slidably arranged. The rack 16 is connected to the angle deflection of the steel frame 1 through the spring 7 pressing against the mounting sleeve 3, and rotates and drives the first gear 15.

[0052] When the connecting node of the steel frame 1 is subjected to dynamic load and undergoes connecting deflection, the mounting sleeve 3 changes its angle along with the steel frame 1. The mounting sleeve 3 squeezes the spring 7, and then applies a force along the direction of the buckle 4 to the rack 16 through the elastic force of the spring 7. Through the meshing action between the rack 16 and the first gear 15, the connecting bolt 2 is pre-tightened, realizing the active anti-loosening of the steel structure connecting node by using dynamic load.

[0053] Preferably, a magnifying lever 17 is hinged on one side of the rack 16. The short arm end of the magnifying lever 17 is connected to the rack 16, and the long arm end of the magnifying lever 17 is connected to the deflection of the mounting sleeve 3. The deflection of the mounting sleeve 3 is magnified through the magnifying lever 17 to magnify the pre-tightening driving effect of the dynamic load on the connecting bolt 2 by the steel frame 1.

[0054] An extension rod 18 is hinged on the side surface of the long arm end of the magnifying lever 17. The spring 7 is pressed and arranged inside the extension rod 18. One end of the extension rod 18 away from the magnifying lever 17 presses against the side surface of the mounting sleeve 3.

[0055] The extension length of the extension rod 18 can be adjusted, thereby ensuring the tight installation between the mounting sleeve 3 and the magnifying lever 17. The angle deflection of the mounting sleeve 3 is reflected as applying a force to the long arm end of the magnifying lever 17 through the extension rod 18, and then the deflection force is magnified through the magnifying lever 17 to drive the active pre-tightening of the connecting bolt 2.

[0056] Preferably, a second gear 19 is meshed on the side surface of the rack 16. The short arm end of the magnifying lever 17 drives the rack 16 through the second gear 19. A meshing driving structure is also arranged on the side surface of the mounting sleeve 3 corresponding to the extension rod 18.

[0057] The second gear 19 is provided to avoid the angle deflection when the hinged magnifying lever 17 acts, and it is difficult to ensure the stability of applying a force to the rack 16. Therefore, the second gear 19 is used as an intermediate transmission medium.

[0058] In addition, a meshing driving structure is also arranged on the side surface of the mounting sleeve 3 corresponding to the extension rod 18, which is used to drive the magnifying lever 17 to advance in the tightening direction of the connecting bolt 2.

[0059] The anti-loosening structure and installation process of the steel structure connection node are provided with a reinforcement structure at the connection node of the steel frame 1, which is not only conducive to the installation of the connection node of the steel frame 1, but also provides passive protection for the connecting bolts 2. An active pre-tightening mechanism is also provided for driving the deflection of the associated steel frame 1 under the action of dynamic load. When the angle of the steel frame 1 changes due to the dynamic load, a driving force in one direction is applied to the connecting bolt 2 by the amplifying lever 17 to actively pre-tighten the connecting bolt 2, thereby compensating for the sacrifice of the connecting bolt 2 in the passive anti-loosening structure and avoiding the dilemma that the existing anti-loosening effect is proportional to the difficulty of disassembly.

[0060] Furthermore, the elastic plate 5 is slidably installed on the side of the mounting sleeve 3 through the mounting groove 8 and the screw 9. The installation position can be adjusted during use at different connection nodes to ensure the transmission of the force between adjacent steel frames 1 at the connection nodes.

[0061] Furthermore, the mounting sleeve 3 is directly fixed and installed by the connecting bolt 2, which is simple and convenient. The buckle 4 hinged on the side of the mounting sleeve 3 is turned over to form a protective effect on the connecting bolt 2, which not only can alleviate the rust of the connecting bolt 2 caused by environmental influences, but also limits the height of the connecting bolt 2 extending from the side wall of the steel frame 1, and to a certain extent prevents the connecting bolt 2 from retreating, thereby preventing the connecting bolt 2 from being separated from the installation position and causing the collapse of the steel frame 1.

[0062] Furthermore, a tightening block 6 is slidingly provided inside the U-shaped plate 401 , and the tightening block 6 is slidably adjusted by adjusting the screw rod 13 to tighten the connecting bolt 2 , thereby limiting the loosening of the connecting bolt 2 through the tightening effect.

[0063] Furthermore, the first gear 15 is fixed on the side of the connecting bolt 2, and a rack 16 meshing with the first gear 15 is slidably set on the inner side of the buckle 4. A second gear 19 is meshed with a side of the rack 16, and the side of the second gear 19 is clamped with an amplifying lever 17. The amplifying lever 17 is hinged to the mounting sleeve 3, and the mounting sleeve 3 and the amplifying lever 17 are connected by an extension rod 18. When the steel frame 1 is subjected to a dynamic load and an angular deflection occurs, not only can the L-shaped plate 10 on the inner side of the mounting sleeve 3 buffer the force to affect the steel frame 1, but the amplifying lever 17 can also apply a force in one direction to the rack 16, and actively pre-tighten it with the connecting bolt 2. The spring 7 arranged on the inner side of the extension rod 18 serves as a buffer structure to avoid damage to the transmission structure.

[0064] The installation process of the anti-loosening structure of the steel structure connection node includes the following steps: S1. Sleeve the mounting sleeve 3 at the connection between the two sections of steel frame 1, attach the elastic plate 5 to the side of the mounting sleeve 3, and adjust it to press against the side wall of the adjacent steel frame 1. Use the connecting bolts 2 to tighten the steel frame 1, the mounting sleeve 3 and the elastic plate 5; After the positioning of the connecting bolt 2 is completed, the flip buckle 4 covers the connecting bolt 2; S3. Adjust the pressing block 6 to slide along the inner side of the buckle 4 to press against the side of the connecting bolt 2; S4. Adjust the spring 7 to press against the associated mounting sleeve 3 and the connecting bolt 2 to complete the installation of the anti-loosening structure of the connection node.

[0065] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A loosening prevention structure for a steel structure connection node, comprising a steel frame (1) and a connecting bolt (2) arranged at the connection node, characterized in that: An installation sleeve (3) is fixedly arranged on the side surface of the end part of the steel frame (1), a buckle (4) is hinged on the side surface of the installation sleeve (3), and the buckle (4) performs buckling protection on the connecting bolt (2); An elastic plate (5) is arranged on the side surface of the installation sleeve (3), and the elastic plate (5) conducts force by fitting on the side wall of the steel frame (1); A pressing block (6) is slidably arranged inside the buckle (4), and the pressing block (6) performs pressing and limiting on the connecting bolt (2); A spring (7) is arranged on the side surface of the installation sleeve (3), and the spring (7) conducts dynamic load to exert a squeezing and pre-tightening effect on the connecting bolt (2).

2. The anti-loosening structure of the steel structure connection node according to claim 1, characterized in that: An installation groove (8) is formed on the side surface of the installation sleeve (3), the connecting bolt (2) is fixed to the installation sleeve (3) through the installation groove (8), a screw rod (9) is fixedly arranged on the side surface of the installation sleeve (3), and the elastic plate (5) is slidably installed on the side surface of the installation sleeve (3) through the screw rod (9).

3. The anti-loosening structure of the steel structure connection node according to claim 1, characterized in that: An L-shaped plate (10) is fixedly arranged inside the installation sleeve (3), a cross plate (11) is fixedly arranged at the end part of the installation sleeve (3), a hoop (12) is sleeved on the side surface of the cross plate (11), and the two cross plates (11) are arranged on opposite sides of the steel frame (1) through the hoop (12).

4. The anti-loosening structure of the steel structure connection node according to claim 1, wherein: The buckle (4) comprises a U-shaped plate (401), one end of the U-shaped plate (401) is hinged to the installation sleeve (3), a clamping block (402) corresponding to the U-shaped plate (401) is fixedly arranged on the side surface of the installation sleeve (3), and a push rod (403) is inserted into the side surface of the U-shaped plate (401).

5. The anti-loosening structure of the steel structure connection node according to claim 1, characterized in that: An adjusting screw rod (13) penetrates through and is connected to the buckle (4) by a bearing on the side surface of the buckle (4), the pressing block (6) is in threaded connection with the adjusting screw rod (13), a convex block (14) is fixedly arranged on the side surface of the pressing block (6), and the pressing block (6) is slidably connected to the buckle (4) through the convex block (14).

6. The anti-loosening structure of the steel structure connection node according to claim 1, characterized in that: A first gear (15) is fixedly sleeved on the side surface of the connecting bolt (2), a rack (16) is meshed with the first gear (15) and slidably arranged inside the buckle (4), and the rack (16) is tightly pressed against the installation sleeve (3) through the spring (7) to be associated with the angular deflection of the steel frame (1), and rotates and drives the first gear (15).

7. The anti-loosening structure of the steel structure connection node according to claim 6, characterized in that: One side of the rack (16) is hinged with an amplification lever (17), the long arm end side of the amplification lever (17) is hinged with an extension rod (18), the spring (7) is tightly pressed and arranged inside the extension rod (18), and the end of the extension rod (18) far away from the amplification lever (17) is tightly pressed against the side surface of the installation sleeve (3).

8. The anti-loosening structure of the steel structure connection node according to claim 7, characterized in that: A second gear (19) is meshed with the side surface of the rack (16), and the short arm end of the amplification lever (17) meshes and drives the rack (16) through the second gear (19), and a meshing drive structure is also arranged on the side surface of the installation sleeve (3) corresponding to the extension rod (18).

9. The installation process of the anti-loosening structure for the steel structure connection node according to any one of the above claims 1-8, characterized in that, Including the following steps: S1. Sleeve and install the installation sleeve (3) at the connection of the two sections of the steel frame (1), attach the elastic plate (5) to the side of the installation sleeve (3), and adjust it to tightly press against the side wall of the adjacent steel frame (1), and use the connecting bolt (2) to tighten the steel frame (1), the installation sleeve (3) and the elastic plate (5); S2. After the positioning of the connecting bolt (2) is completed, flip the buckle (4) to cover the connecting bolt (2); S3. Adjust the pressing block (6) to slide along the inner side of the buckle (4) to tightly press against the side of the connecting bolt (2); S4. Adjust the spring (7) to tightly press against the associated installation sleeve (3) and the connecting bolt (2) to complete the installation of the connection node anti-loosening structure.

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