Connecting assembly at steel structure joint

Abstract

The invention discloses a connecting assembly at a steel structure joint, and relates to the technical field of steel structure connection. The connecting assembly at the steel structure connecting position comprises a first connecting rod and a second connecting rod, a first flange plate is fixedly installed on the first connecting rod, a second flange plate is fixedly installed on the second connecting rod, and a plurality of integrally-formed high-strength bolts are arranged on the second flange plate; a plurality of gear type high-strength nuts meshed with the high-strength bolts are arranged on the first flange plate in a surrounding manner; the plurality of gear type high-strength nuts synchronously rotate through the transmission gear ring; the first connecting rod is sleeved with a protective cover covering the high-strength bolt and the gear type high-strength nut. The device further comprises a driving piece and a locking part. The driving piece is used for driving the multiple gear type high-strength nuts to rotate. Multi-bolt synchronous tightening is achieved through gear meshing or gear ring transmission, it is ensured that pre-tightening force is uniform, single-point stress concentration is avoided, dynamic load scene optimization is achieved through the locking part, and the anti-loosening capacity is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of steel structure connection, and more specifically, relates to a connection component at the joint of a steel structure. Background Art

[0002] A steel structure is a structure composed of steel materials and is one of the main types of building structures. A steel structure mainly consists of steel beams, steel columns, steel trusses and other components supported by sections and steel plates. The components or parts are usually connected by welds, bolts or rivets. Due to its light self-weight and convenient construction, it is widely used in large factories, stadiums, super high-rise buildings and other fields.

[0003] Traditional steel structure connections are flange bolt connections. Traditional high-strength bolts need to be tightened manually one by one, which is difficult to ensure the uniformity of the synchronous pre-tightening force of multiple bolts, resulting in uneven stress distribution on the flange contact surface, easily causing local plastic deformation or fatigue cracks. Moreover, conventional locking devices (such as spring pins, friction gaskets) are prone to material fatigue failure under long-term vibration, resulting in bolt rotation and loosening. In view of the above problems, a connection component at the joint of a steel structure is proposed here. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a connection component at the joint of a steel structure that can overcome the above problems or at least partially solve the above problems.

[0005] To solve the above technical problem, the basic concept of the technical solution adopted by the present invention is: A connection component at the joint of a steel structure includes a first connecting rod and a second connecting rod. A first flange is fixedly installed on the first connecting rod, and a second flange is fixedly installed on the second connecting rod. A plurality of integrally formed high-strength bolts are provided on the second flange; a plurality of gear-shaped high-strength nuts meshing with the high-strength bolts are arranged around the first flange; the plurality of gear-shaped high-strength nuts rotate synchronously through a transmission gear ring; a protective cover covering the high-strength bolts and the gear-shaped high-strength nuts is sleeved on the first connecting rod; a driving member and a locking portion are further included. The driving member is used to drive the plurality of gear-shaped high-strength nuts to rotate, and the locking portion is used to lock the plurality of gear-shaped high-strength nuts.

[0006] As a preferred embodiment of the present invention: The first flange includes a first connecting plate and a second connecting plate welded together, and the gear-shaped high-strength nut is rotatably arranged between the first connecting plate and the second connecting plate.

[0007] As a preferred embodiment of the present invention: The driving member is a hexagonal nut, which is fixedly installed on one of the gear-shaped high-strength nuts. The transmission gear ring is an external gear ring rotatably arranged on the first connecting rod. The transmission gear ring meshes with a plurality of gear-shaped high-strength nuts. The protective cover is threadedly connected to the first flange.

[0008] As a preferred embodiment of the present invention: The locking portion includes a limiting block fixedly installed on the first connecting rod. A first locking rod is slidably installed on the limiting block. The first locking rod is provided with locking threads that are in threaded cooperation with the internal threads in the limiting block. A second limiting plate is fixedly installed on the first locking rod. A second spring is sleeved on the first locking rod. The two ends of the second spring are respectively in contact connection with the second limiting plate and the limiting block. A plurality of second insertion holes for the first locking rod to insert are arranged around the transmission gear ring.

[0009] As a preferred embodiment of the present invention: The transmission gear ring is an internal gear ring rotatably installed on the second connecting plate. The protective cover is threadedly connected to the internal gear ring. The driving member is arranged on the internal gear ring.

[0010] As a preferred embodiment of the present invention: The driving member includes an installation cylinder fixedly installed on the transmission gear ring. A pull rod is slidably installed on the installation cylinder. One end of the pull rod extending into the installation cylinder is fixedly installed with a first limiting plate. A first spring is arranged on the pull rod, and the two ends of the first spring are respectively in contact with the installation cylinder and the first limiting plate.

[0011] As a preferred embodiment of the present invention: The locking portion includes a second locking rod fixedly installed on the side wall of the pull rod. A plurality of first insertion holes for the second locking rod to insert are arranged around the second connecting plate.

[0012] As a preferred embodiment of the present invention: The driving member includes a hinge seat fixedly installed on the transmission gear ring. A handle is rotatably installed on the hinge seat.

[0013] As a preferred embodiment of the present invention: The locking portion includes a clamping seat fixedly installed on the outer wall of the protective cover and a limiting insertion block fixedly installed on the handle. A clamping groove for clamping the limiting insertion block is arranged on the clamping seat.

[0014] As a preferred embodiment of the present invention: The gear-shaped high-strength nut includes an external gear sleeve and an internal threaded cylinder. The inner side of the external gear sleeve and the outer side of the internal threaded cylinder are in fitting rotation. A first deformable metal block is fixedly installed on the inner side of the external gear sleeve. A second deformable metal block is fixedly installed on the outer side of the internal threaded cylinder. The surfaces of the first deformable metal block and the second deformable metal block that are in contact with each other are both inclined surfaces.

[0015] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The present invention realizes synchronous tightening of multiple bolts through gear meshing or ring gear transmission, ensuring uniform pre-tightening force and avoiding single-point stress concentration. The anti-loosening ability is improved by optimizing the locking part for dynamic load scenarios.

[0016] The following further describes in detail the specific implementation manners of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In the accompanying drawings: Figure 1 is a schematic perspective view of a connection component at a steel structure connection proposed by the present invention; Figure 1 ; Figure 2 is a schematic structural view of a driving member of a connection component at a steel structure connection proposed by the present invention; Figure 1 ; Figure 3 is an exploded structural view of a connection component at a steel structure connection proposed by the present invention; Figure 1 ; Figure 4 is a schematic structural view of the connection component at a steel structure connection proposed by the present invention at Figure 3 position A in; Figure 5 is a schematic perspective view of a connection component at a steel structure connection proposed by the present invention; Figure 2 ; Figure 6 is a schematic structural view of a driving member of a connection component at a steel structure connection proposed by the present invention; Figure 2 ; Figure 7 is an exploded structural view of a connection component at a steel structure connection proposed by the present invention; Figure 2 ; Figure 8 is a schematic structural view of a locking part of a connection component at a steel structure connection proposed by the present invention; Figure 1 ; Figure 9 is a schematic perspective view of a connection component at a steel structure connection proposed by the present invention; Figure 3 ; Figure 10 is a schematic structural view of a driving member of a connection component at a steel structure connection proposed by the present invention; Figure 11 is an exploded structural view of a connection component at a steel structure connection proposed by the present invention; Figure 3 ; Figure 12 is a schematic structural view of a locking part of a connection component at a steel structure connection proposed by the present invention; Figure 2 ; Figure 13 Structural schematic of a gear-shaped high-strength nut of a connection component at a steel structure connection proposed by the present invention Figure 1 ; Figure 14 Structural schematic of a gear-shaped high-strength nut of a connection component at a steel structure connection proposed by the present invention Figure 2 ; Figure 15 Three-dimensional structural schematic diagram of a gear-shaped high-strength nut of a connection component at a steel structure connection proposed by the present invention; Figure 16 Explosion structural schematic diagram of a gear-shaped high-strength nut of a connection component at a steel structure connection proposed by the present invention.

[0018] In the figure: 1. First connecting rod; 2. First flange; 21. First connecting plate; 221. First jack; 22. Second connecting plate; 3. Second connecting rod; 31. Second flange; 32. High-strength bolt; 4. Gear-shaped high-strength nut; 41. Outer tooth sleeve; 42. Inner threaded cylinder; 43. First deformed metal block; 44. Second deformed metal block; 5. Protective cover; 6. Driving member; 61. Installation cylinder; 62. Pull rod; 63. First spring; 64. First limiting plate; 65. Hinge seat; 66. Handle; 7. Locking part; 71. Limiting block; 72. First locking rod; 73. Locking thread; 74. Second limiting plate; 75. Second locking rod; 76. Limiting insertion block; 77. Card seat; 78. Card slot; 79. Second spring; 8. Transmission gear ring; 81. Second jack. Specific embodiments

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0020] Embodiment 1:

[0021] Referring to Figures 1 - 4 , a connection component at a steel structure connection includes a first connecting rod 1 and a second connecting rod 3. A first flange 2 is fixedly installed on the first connecting rod 1, a second flange 31 is fixedly installed on the second connecting rod 3, and a plurality of integrally formed high-strength bolts 32 are provided on the second flange 31; a plurality of gear-shaped high-strength nuts 4 meshing with the high-strength bolts 32 are arranged around the first flange 2; the plurality of gear-shaped high-strength nuts 4 rotate synchronously through a transmission gear ring 8; a protective cover 5 covering the high-strength bolts 32 and the gear-shaped high-strength nuts 4 is sleeved on the first connecting rod 1; it further includes a driving member 6 and a locking part 7. The driving member 6 is used to drive the plurality of gear-shaped high-strength nuts 4 to rotate, and the locking part 7 is used to lock the plurality of gear-shaped high-strength nuts 4; Among them, the first flange 2 includes a first connecting plate 21 and a second connecting plate 22 welded together, and the gear-shaped high-strength nut 4 is rotatably arranged between the first connecting plate 21 and the second connecting plate 22; The driving member 6 is a hexagonal nut, which is fixedly installed on one of the gear-shaped high-strength nuts 4. The transmission gear ring 8 is an external gear ring rotatably arranged on the first connecting rod 1. The transmission gear ring 8 meshes with a plurality of gear-shaped high-strength nuts 4. The protective cover 5 is threadedly connected to the first flange 2; The locking part 7 includes a limiting block 71 fixedly installed on the first connecting rod 1. A first locking rod 72 is slidably installed on the limiting block 71. The first locking rod 72 is provided with a locking thread 73 that is in threaded cooperation with the internal thread in the limiting block 71. A second limiting plate 74 is fixedly installed on the first locking rod 72. A second spring 79 is sleeved on the first locking rod 72. The two ends of the second spring 79 are respectively in abutting connection with the second limiting plate 74 and the limiting block 71. A plurality of second insertion holes 81 for the first locking rod 72 to insert are arranged around the transmission gear ring 8.

[0022] When in use, the first connecting rod 1 and the second connecting rod 3 are respectively fixed to two truss steel pipes. It can be fixed by welding, or threaded grooves can be opened on the first connecting rod 1 and the second connecting rod 3 so that the first connecting rod 1 and the second connecting rod 3 are threadedly fixed to the steel pipe.

[0023] Furthermore, the spiral directions of the two groups of threaded grooves are opposite. When the assembly connects two groups of steel pipes and vibrates, through the two groups of opposite threads, the rotation of the assembly can be prevented, and the stability of the assembly connecting the two steel pipes can be improved.

[0024] When the first connecting rod 1 and the second connecting rod 3 are connected to the steel pipe, after putting a gasket on the high-strength bolt 32, the integrally formed high-strength bolt 32 on the second flange 31 is inserted into the gear-shaped high-strength nut 4 of the first flange 2. Use a wrench to rotate the hexagonal nut as the driving member 6 to drive the gear-shaped high-strength nut 4 fixed thereto to rotate, and then drive the transmission gear ring 8 to rotate synchronously, so that all the gear-shaped high-strength nuts 4 synchronously tighten the high-strength bolt 32; Subsequently, the locking thread 73 is disengaged from the limiting block 71. Under the resilience of the second spring 79, the first locking rod 72 is inserted into the second insertion hole 81 of the transmission gear ring 8. The resilience of the second spring 79 makes the first locking rod 72 tightly locked with the second insertion hole 81 to prevent the transmission gear ring 8 from rotating back. Finally, the protective cover 5 is screwed tightly onto the first flange 2 to completely wrap the high-strength bolt 32 and the gear-shaped high-strength nut 4.

[0025] This steel structure connection component realizes the synchronous tightening of multiple gear-shaped high-strength nuts 4 and multiple high-strength bolts 32 through the meshing of the gear-shaped high-strength nut 4 and the transmission gear ring 8, ensuring uniform pre-tightening force and significantly improving the connection efficiency; the locking part 7 uses the elastic reset of the second spring 79 to mechanically lock the first locking rod 72 and the second jack 81, effectively preventing the rotation of the transmission gear ring 8 caused by vibration, and having excellent anti-loosening performance; the threaded connection design of the protective cover 5 combines dust-proof and quick disassembly and assembly functions, extending the service life of the high-strength bolt 32 and the gear-shaped high-strength nut 4; the reverse spiral thread groove design on the first connecting rod 1 and the second connecting rod 3 suppresses the rotation of the component caused by vibration through two-way self-locking, further enhancing the stability of the steel pipe connection; the dual modes of welding and threaded fixation are adapted to different construction scenarios, and the modular structure is convenient for maintenance, especially suitable for steel structure projects with harsh dynamic loads such as high-speed railway stations.

[0026] Embodiment 2:

[0027] Referring to Figures 5 - 8 , a connection component at the steel structure joint, including a first connecting rod 1 and a second connecting rod 3. A first flange 2 is fixedly installed on the first connecting rod 1, a second flange 31 is fixedly installed on the second connecting rod 3, and multiple integrally formed high-strength bolts 32 are arranged on the second flange 31; multiple gear-shaped high-strength nuts 4 meshing with the high-strength bolts 32 are arranged around the first flange 2; the multiple gear-shaped high-strength nuts 4 rotate synchronously through a transmission gear ring 8; a protective cover 5 covering the high-strength bolts 32 and the gear-shaped high-strength nuts 4 is sleeved on the first connecting rod 1; it also includes a driving part 6 and a locking part 7, the driving part 6 is used to drive the multiple gear-shaped high-strength nuts 4 to rotate, and the locking part 7 is used to lock the multiple gear-shaped high-strength nuts 4; The first flange 2 includes a first connecting plate 21 and a second connecting plate 22 welded together, and the gear-shaped high-strength nut 4 is rotatably arranged between the first connecting plate 21 and the second connecting plate 22; The transmission gear ring 8 is an internal gear ring rotatably installed on the second connecting plate 22, the protective cover 5 is threadedly connected to the internal gear ring, and the driving part 6 is arranged on the internal gear ring; The driving part 6 includes an installation cylinder 61 fixedly installed on the transmission gear ring 8. A pull rod 62 is slidably installed on the installation cylinder 61. One end of the pull rod 62 extending into the installation cylinder 61 is fixedly installed with a first limit plate 64, and a first spring 63 whose two ends respectively abut against the installation cylinder 61 and the first limit plate 64 is arranged on the pull rod 62; The locking part 7 includes a second locking rod 75 fixedly installed on the side wall of the pull rod 62, and multiple first jacks 221 for inserting the second locking rod 75 are arranged around the second connecting plate 22.

[0028] When in use, the first connecting rod 1 and the second connecting rod 3 are respectively fixed to two truss steel pipes. They can be fixed by welding, or threaded grooves can be opened on the first connecting rod 1 and the second connecting rod 3 so that the first connecting rod 1 and the second connecting rod 3 are threadedly fixed to the steel pipes.

[0029] Furthermore, the spiral directions of the two groups of threaded grooves are opposite. When the assembly connects two groups of steel pipes and vibrates, the two groups of opposite threads can prevent the assembly from rotating, improving the stability of the assembly connecting the two steel pipes.

[0030] In this embodiment, when in use, after putting a gasket on the high-strength bolt 32, the integrally formed high-strength bolt 32 on the second flange 31 is aligned and inserted into the gear-shaped high-strength nut 4 of the first flange 2 to ensure that the high-strength bolt 32 is in place in meshing with the gear-shaped high-strength nut 4. Then, the pull rod 62 is pulled outwards to compress the first spring 63, and then the inner tooth ring is driven to rotate through the mounting cylinder 61 and the pull rod 62. The inner tooth ring meshes with a plurality of gear-shaped high-strength nuts 4 to realize synchronous rotation of all nuts and uniformly tighten the high-strength bolts 32. Then, after releasing the pull rod 62, the first spring 63 rebounds to push the pull rod 62 to reset. The second locking rod 75 fixed to the side wall of the pull rod 62 is inserted into the first jack 221 of the second connecting plate 22 to lock the position of the transmission gear ring 8 and prevent rotation. Finally, the protective cover 5 is screwed tightly to the outer edge of the inner tooth ring to completely wrap the high-strength bolts 32 and the gear-shaped high-strength nuts 4 and isolate external corrosive media.

[0031] In this embodiment, the driving member 6 adopts a combination of the pull rod 62 and the first spring 63. By pulling the pull rod 62 outwards to compress the spring and then driving the inner tooth ring to rotate, compared with the manual driving of the hexagonal nut in the first embodiment, the operation of the pull rod 62 is more labor-saving and no additional tools are required, especially suitable for construction scenarios at high altitudes or with large spans. Moreover, the driving member 6 and the locking portion 7 are integrated on the transmission gear ring 8. When disassembling and assembling, only the pull rod 62 and the protective cover 5 need to be operated, and the overall structure does not need to be disassembled. This design is suitable for engineering scenarios such as high-speed railway stations that require frequent maintenance, improving the maintenance efficiency.

[0032] Embodiment Three:

[0033] Refer to Figures 9 - 12, A connecting component at the connection of a steel structure, including a first connecting rod 1 and a second connecting rod 3. A first flange 2 is fixedly installed on the first connecting rod 1, and a second flange 31 is fixedly installed on the second connecting rod 3. A plurality of integrally formed high-strength bolts 32 are provided on the second flange 31; a plurality of gear-shaped high-strength nuts 4 meshing with the high-strength bolts 32 are arranged around the first flange 2; the plurality of gear-shaped high-strength nuts 4 rotate synchronously through a transmission gear ring 8; a protective cover 5 covering the high-strength bolts 32 and the gear-shaped high-strength nuts 4 is sleeved on the first connecting rod 1; it also includes a driving member 6 and a locking portion 7. The driving member 6 is used to drive the plurality of gear-shaped high-strength nuts 4 to rotate, and the locking portion 7 is used to lock the plurality of gear-shaped high-strength nuts 4; The first flange 2 includes a first connecting plate 21 and a second connecting plate 22 welded together, and the gear-shaped high-strength nut 4 is rotatably arranged between the first connecting plate 21 and the second connecting plate 22; The transmission gear ring 8 is an internal gear ring rotatably installed on the second connecting plate 22. The protective cover 5 is threadedly connected to the internal gear ring, and the driving member 6 is arranged on the internal gear ring; The driving member 6 includes a hinge seat 65 fixedly installed on the transmission gear ring 8, and a handle 66 is rotatably installed on the hinge seat 65; The locking portion 7 includes a clamping seat 77 fixedly installed on the outer wall of the protective cover 5 and a limiting insertion block 76 fixedly installed on the handle 66. A clamping groove 78 for clamping the limiting insertion block 76 is provided on the clamping seat 77; The end of the limiting insertion block 76 is a sphere, and the sphere is embedded in the clamping groove 78 through interference fit.

[0034] When in use, the first connecting rod 1 and the second connecting rod 3 are respectively fixed to two truss steel pipes. It can be fixed by welding, or threaded grooves can be opened on the first connecting rod 1 and the second connecting rod 3 to thread-fix the first connecting rod 1 and the second connecting rod 3 to the steel pipe.

[0035] Furthermore, the spiral directions of the two groups of threaded grooves are opposite. When the component connects two groups of steel pipes and vibrates, through the two groups of opposite threads, the rotation of the component can be prevented, and the stability of the component connecting the two steel pipes can be improved.

[0036] In this embodiment, the first connecting rod 1 and the second connecting rod 3 are respectively fixed to two truss steel pipes to be connected by welding or threading. If threaded connection is adopted, threaded grooves with opposite spiral directions such as left-handed and right-handed are opened on the first connecting rod 1 and the second connecting rod 3, so that after the steel pipe is screwed in, the rotation of the component caused by vibration is inhibited through two-way self-locking; Put a gasket on the high-strength bolt 32, and then align the integrally formed high-strength bolt 32 on the second flange 31 with the gear-shaped high-strength nut 4 on the first flange 2 and insert it to ensure that the threads of the high-strength bolt 32 and the gear-shaped high-strength nut 4 are completely meshed; Then rotate the handle 66, drive the rotation of the inner tooth ring of the transmission tooth ring 8 through the hinge seat 65. Since the transmission tooth ring 8 meshes with multiple gear-type high-strength nuts 4, all the gear-type high-strength nuts 4 rotate synchronously to evenly tighten the high-strength bolts 32, ensuring consistent distribution of the pre-tightening force. After tightening is completed, press the spherical end of the limit insert block 76 on the handle 66 into the slot 78 of the card seat 77 on the outer wall of the protective cover 5. The sphere is embedded in the slot 78 through interference fit to form a mechanical lock, preventing the handle 66 from rebounding and the transmission tooth ring 8 from reversing, and avoiding loosening of the gear-type high-strength nut 4 and the protective cover 5. Thread the protective cover 5 tightly onto the outer edge of the transmission tooth ring 8 to completely wrap the high-strength bolt 32 and the gear-type high-strength nut 4, preventing the intrusion of corrosive media such as dust and water vapor, and extending the life of the components. When the steel pipe is vibrated, the reverse thread grooves of the first connecting rod 1 and the second connecting rod 3 restrict each other through frictional resistance, preventing the overall rotation of the assembly and ensuring stable connection.

[0037] In this embodiment, the driving member 6 adopts the structure of the handle 66 and the hinge seat 65. Compared with the manual driving of the hexagonal nut in Embodiment 1 and the operation of the pull rod 62 in Embodiment 2, the operation of the handle 66 is more labor-saving, especially suitable for high-altitude or large-span construction scenarios.

[0038] The sphere interference self-locking does not rely on a spring. The locking part 7 realizes mechanical locking through the interference fit between the sphere of the limit insert block 76 and the slot 78, and does not require spring-assisted reset. Compared with the risk that the spring may fail due to fatigue in Embodiments 1 and 2, the sphere interference structure directly restricts rotation through geometric shape, improving the anti-vibration and anti-loosening ability.

[0039] Embodiment 4:

[0040] As Figures 13 - 16 shown, in order to improve the balance of the bolt tightening prestress, further on the basis of Embodiment 2 and Embodiment 3, the gear-type high-strength nut 4 includes an outer tooth sleeve 41 and an inner threaded cylinder 42 that fit and rotate. A first deformed metal block 43 is fixedly installed on the inner side of the outer tooth sleeve 41, and a second deformed metal block 44 is fixedly installed on the outer side of the inner threaded cylinder 42. The surfaces of the first deformed metal block 43 and the second deformed metal block 44 that are in contact with each other are both inclined surfaces. During use, the outer tooth sleeve 41 drives the inner threaded cylinder 42 to rotate through the first deformed metal block 43 and the second deformed metal block 44, thereby realizing the locking of the high-strength bolt 32 by the gear-type high-strength nut 4.

[0041] After the internal thread of the internal thread barrel 42 is locked, continue to apply torque to the external gear sleeve 41. When the torque reaches the threshold value that can deform the first deformed metal block 43 and the second deformed metal block 44, the first deformed metal block 43 and the second deformed metal block 44 deform, causing the external gear sleeve 41 to continue to rotate on the locked internal thread barrel 42, so as to facilitate the locking of the remaining unfastened gear-shaped high-strength nuts 4 and high-strength bolts 32.

[0042] After the first deformed metal block 43 and the second deformed metal block 44 are displaced, the first deformed metal block 43 and the second deformed metal block 44 recover under their own resilience characteristics. When it is necessary to loosen the gear-shaped high-strength nut 4 and the high-strength bolt 32, rotate the external gear sleeve 41 in the reverse direction. Under the resistance when the first deformed metal block 43 and the second deformed metal block 44 come into contact, the external gear sleeve 41 drives the internal thread barrel 42 to rotate.

[0043] Among them, the first deformed metal block 43 and the second deformed metal block 44 are preferably spring steel. In addition, copper-based sintered alloy, etc. can also be selected.

[0044] In summary, the split design of the external gear sleeve 41 and the internal thread barrel 42, combined with the inclined surface contact mechanism of the first deformed metal block 43 and the second deformed metal block 44, realizes torque threshold control.

[0045] When the pre-tightening force reaches the set value, the deformed metal block undergoes plastic deformation, allowing the external gear sleeve 41 to rotate idly, avoiding overloading and damage of a single bolt. This design ensures uniform distribution of the pre-tightening force of multiple high-strength bolts 32, avoiding the problem of uneven pre-tightening force caused by operation errors.

[0046] During disassembly, only need to rotate the external gear sleeve 41 in the reverse direction, and the internal thread barrel 42 can be loosened without special tools, simplifying the maintenance process.

[0047] In addition, if a certain bolt is accidentally tightened too much, causing the deformed metal block to deform, the other bolts can still be adjusted synchronously through the transmission gear ring 8, avoiding the failure of the overall structure and improving the fault tolerance of the system.

[0048] The split nut design allows the external gear sleeve 41 and the internal thread barrel 42 to use different materials (such as the external gear sleeve 41 uses high wear-resistant alloy and the internal thread barrel 42 uses high-strength steel), reducing the manufacturing cost while ensuring strength.

[0049] The inclined surface structure of the deformed metal block can also flexibly control the torque threshold by adjusting the angle and material hardness to adapt to different engineering requirements.

[0050] The above are only the preferred embodiments of the present invention, and there is no limitation to the present invention in any form. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of the present invention can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content prompted above within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the present invention's solution.

Claims

1. A connection assembly at a connection point of a steel structure, comprising a first connection rod (1) and a second connection rod (3), wherein a first flange (2) is fixedly mounted on the first connection rod (1), and a second flange (31) is fixedly mounted on the second connection rod (3), wherein: The second flange (31) is provided with a plurality of integrally formed high-strength bolts (32); The first flange (2) is surrounded by a plurality of gear-shaped high-strength nuts (4) that mesh with the high-strength bolts (32); The plurality of gear-type high-strength nuts (4) rotate synchronously via a transmission gear ring (8); The first connecting rod (1) is sleeved with a protective cover (5) that covers the high-strength bolt (32) and the gear-shaped high-strength nut (4); It also comprises a driving member (6) and a locking portion (7), wherein the driving member (6) is used to drive the plurality of gear-type high-strength nuts (4) to rotate, and the locking portion (7) is used to lock the plurality of gear-type high-strength nuts (4).

2. A connection assembly for a steel structure connection according to claim 1, characterized in that: The first flange (2) comprises a first connecting plate (21) and a second connecting plate (22) which are welded together, and the gear-type high-strength nut (4) is rotatably arranged on the first connecting plate (21) and the second connecting plate (22).

3. A connection assembly for a steel structure connection according to claim 2, characterized in that: The driving member (6) is a hexagonal nut fixedly mounted on one of the gear-type high-strength nuts (4); the transmission gear ring (8) is an external gear ring rotatably arranged on the first connecting rod (1); the transmission gear ring (8) meshes with a plurality of gear-type high-strength nuts (4); and the protective cover (5) is threadedly connected to the first flange (2).

4. A connection assembly for a steel structure connection according to claim 3, characterized in that: The locking portion (7) comprises a limit block (71) fixedly mounted on the first connecting rod (1), a first locking rod (72) being slidably mounted on the limit block (71), and a locking thread (73) cooperating with an internal thread of the limit block (71) being provided on the first locking rod (72); a second limit plate (74) being fixedly mounted on the first locking rod (72), a second spring (79) being sleeved on the first locking rod (72), two ends of the second spring (79) being respectively abuttingly connected with the second limit plate (74) and the limit block (71), and a plurality of second insertion holes (81) for inserting the first locking rod (72) being arranged around the transmission gear ring (8).

5. The connection assembly for a steel structure connection according to claim 2, characterized in that: The transmission gear ring (8) is an internal gear ring rotatably mounted on the second connecting plate (22), the protective cover (5) is threadedly connected to the internal gear ring, and the driving member (6) is arranged on the internal gear ring.

6. A connection assembly for a steel structure connection according to claim 5, characterized in that: The driving member (6) comprises a mounting tube (61) fixedly mounted on the transmission gear ring (8), a pull rod (62) being slidably mounted on the mounting tube (61), a first limit plate (64) being fixedly mounted on one end of the pull rod (62) extending into the mounting tube (61), and a first spring (63) is provided on the pull rod (62) at two ends thereof, the first spring being in contact with the mounting tube (61) and the first limit plate (64) respectively.

7. A connection assembly for a steel structure connection according to claim 6, characterized in that: The locking portion (7) comprises a second locking rod (75) fixedly mounted on a side wall of the pull rod (62), and the second connecting plate (22) is surrounded by a plurality of first insertion holes (221) for inserting the second locking rod (75).

8. The connection assembly for a steel structure connection according to claim 5, characterized in that: The driving member (6) comprises an articulated seat (65) fixedly mounted on the transmission gear ring (8), and a handle (66) is rotatably mounted on the articulated seat (65).

9. A connection assembly for a steel structure connection according to claim 8, characterized in that: The locking portion (7) comprises a clamping seat (77) fixedly mounted on the outer wall of the protective cover (5) and a limiting plug block (76) fixedly mounted on the handle (66); the clamping seat (77) is provided with a clamping groove (78) for clamping the limiting plug block (76).

10. A connection assembly for a steel structure connection according to claim 7 or 9, characterized in that: The gear-type high-strength nut (4) comprises an external gear sleeve (41) and an internal threaded barrel (42), the inner side of the external gear sleeve (41) and the outer side of the internal threaded barrel (42) being fitted and rotated, a first deformable metal block (43) being fixedly mounted on the inner side of the external gear sleeve (41), and a second deformable metal block (44) being fixedly mounted on the outer side of the internal threaded barrel (42), and the first deformable metal block (43) and the second deformable metal block (44) both having abutting surfaces which are inclined surfaces.

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