Reinforcement and anti-loosening structure of connection nodes of prefabricated building external frame

Abstract

The present invention discloses a reinforcement and anti-loosening structure for the connection nodes of the external frame of an assembled building, and relates to the technical field of supporting devices for construction projects. The reinforcement and anti-loosening structure for the connection nodes of the external frame of an assembled building includes an inner support assembly, which is composed of a first support plate and a second support plate, wherein a first spring is installed between the first support plate and the second support plate to make the first support plate and the outer wall of the longitudinal sweeping rod abut against each other. The device generates a bidirectional elastic thrust through the first support plate and the second support plate through the first spring, so that the longitudinal sweeping rod and the transverse sweeping rod are always subjected to uniform compressive stress, thereby realizing elastic pre-tightening of the inner support assembly, and utilizing two sets of clamp assemblies in a staggered layout so that the first support plate and the second support plate apply pressure toward the longitudinal sweeping rod and the transverse sweeping rod respectively, and the first arc-shaped clamp and the second arc-shaped clamp apply pressure toward the longitudinal sweeping rod and the transverse sweeping rod respectively, thereby improving the reinforcement and anti-loosening at the connection nodes of the longitudinal sweeping rod and the transverse sweeping rod.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering supporting devices, in particular to a reinforcement and anti-loosening structure of connection nodes of an assembled building external frame. Background Art

[0002] In prefabricated buildings, the selection and design of external scaffolding (external wall scaffolding) must move beyond the traditional cast-in-place construction model, focusing on systematic optimization of prefabricated component hoisting techniques, construction efficiency improvements, and safety management systems. Among them, steel pipe coupler scaffolding, a traditional mainstay, is composed of steel pipe components such as vertical poles, horizontal poles, and scissor braces, assembled with right-angle, rotary, and butt-joint fasteners through bolts. Its significant advantage lies in its flexibility to adapt to special-shaped structures and local reinforcement requirements. However, it has inherent limitations. Problems such as loose fastener bolts and frame deformation can easily lead to loose fasteners, which can easily induce overturning risks. Strict construction supervision and frequent inspections are required to eliminate these risks.

[0003] Chinese patent publication number CN104790650A discloses a steel pipe scaffolding fastener. The device uses a connected double fastener to replace the two right-angle fasteners required for the installation of traditional high-rise formwork beam bottom steel pipe scaffolding, effectively improving the anti-slip ability of the fasteners at the vertical steel pipes of the high-rise formwork beam bottom steel pipe scaffolding. At the same time, by using the grip force indicator plate provided on the fastener base, by judging the distance between the grip force observation surface and the grip force observation surface of the upper cover plate and the grip force observation surface of the lower cover plate, it is possible to visually check whether the tightening torque of the Y-axis upper cover plate and the Y-axis lower cover plate are consistent. It has the advantages of simple operation and intuitive and convenient inspection. If problems are found, they can be remedied in time, reducing the amount of scaffolding construction during construction and effectively improving the overall safety factor of the scaffolding.

[0004] However, in actual use, fasteners rely on the friction force of bolts to fix the rods, and their anti-slip ability is limited by the uniformity of the manual tightening torque. Although the torque consistency can be visually detected through the grip force indicator plate, it cannot solve the following problems: the fasteners are rigid connections and lack a buffer mechanism. Instantaneous overloads can easily cause permanent deformation, requiring frequent shutdowns for maintenance. In addition, when the prefabricated building scaffolding is subjected to dynamic effects such as lifting impact and wind loads, the bolt preload is easily attenuated, resulting in a decrease in node stiffness. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a reinforcement and anti-loosening structure for connection nodes of prefabricated building external frames, which solves the problems raised in the background art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a reinforcement and anti-loosening structure of the connection node of the external frame of an assembled building, including an inner support assembly, wherein the inner support assembly consists of a first support plate and a second support plate, wherein a first spring is installed between the first support plate and the second support plate to make the first support plate abut against the outer wall of the longitudinal sweeping rod, and the second support plate abut against the outer wall of the transverse sweeping rod; a clamp assembly, wherein there are two groups of clamp assemblies, and the two groups of clamp assemblies are staggered and arranged on both sides of the inner support assembly, and the clamp assembly includes a first arc-shaped clamp and a second arc-shaped clamp, wherein the first arc-shaped clamp and the first support plate are used to fix the longitudinal sweeping rod clamp, and the second arc-shaped clamp and the second support plate are used to fix the transverse sweeping rod clamp; a bolt, wherein the bolt is used to connect the first arc-shaped clamp and the second arc-shaped clamp on the two clamp assemblies, so that the first arc-shaped clamp and the second arc-shaped clamp are both close to the inner support assembly.

[0007] Furthermore, the clamp assembly also includes a through slot, which is provided at one end of the first arc-shaped clamp and the second arc-shaped clamp; a sloped structure, which is provided on the side of the through slot away from the inner support assembly; wherein, one end of the bolt passes through the through slot on the second arc-shaped clamp and is connected to the first arc-shaped clamp on the other clamp assembly, and a limiting block is fixed at one end of the bolt close to the second arc-shaped clamp, and one end of the limiting block is adapted to the sloped structure to limit the rotation of the bolt, and a fastener is provided at one end of the bolt close to the first arc-shaped clamp for limiting the first arc-shaped clamp and the second arc-shaped clamp on the bolt.

[0008] Furthermore, the fastener includes a sleeve, which is sleeved on the outside of the bolt, and one end of the sleeve facing the inner support assembly is adapted to the inclined structure to limit the rotation of the sleeve; a nut groove, which is provided on the side of the inner wall of the sleeve facing the inner support assembly; a locking nut, which is threadedly connected to the bolt, and the outer wall of the locking nut is provided with an external thread, and the external thread is threadedly connected to the nut groove.

[0009] Furthermore, the fastener also includes a groove, which is opened at one end of the nut slot away from the inner support assembly, and an inner ratchet is fixed in the groove; a pawl, a movable cavity is opened on the locking nut, and a pawl is slidably installed inside the movable cavity, wherein the pawl extends out of the groove and adapts to the inner ratchet to limit the reversal of the locking nut.

[0010] Furthermore, the axial length of the pawl along the locking nut is greater than the axial length of the groove, and limiting balls are provided at both ends of the pawl, the inner wall of the movable cavity is provided with a guide rail adapted to the limiting balls, and a second spring is installed between the bottom of the movable cavity and the pawl, and the second spring is used to push the pawl out of the movable cavity.

[0011] Furthermore, the projections of the first support plate and the second support plate on the horizontal plane are a "C"-shaped structure, and the projections of the first support plate and the second support plate on the vertical plane are a "cross"-shaped structure, so that the first support plate and the second support plate are respectively fitted with the longitudinal sweeping rod and the transverse sweeping rod.

[0012] Furthermore, the inner support assembly also includes a first movable arm, there are two groups of the first movable arms, the two groups of first movable arms are symmetrically arranged, one end of the first movable arm is hinged to the outer wall of the first support plate, and the other end of the first movable arm is movably connected to the second support plate; a second movable arm, there are two groups of the second movable arms, the two groups of second movable arms are symmetrically arranged, one end of the second movable arm is hinged to the outer wall of the second support plate, and the other end of the second movable arm is movably connected to the first support plate.

[0013] Furthermore, both the first support plate and the second support plate are provided with sliding grooves, the two sliding grooves are perpendicular to each other, and sliders are symmetrically provided inside the sliding grooves; the two sliders located on the first support plate are hinged to one end of the second movable arm, and the two sliders located on the second support plate are hinged to one end of the first movable arm.

[0014] Furthermore, the clamp assembly also includes: a base, one end of the base is hinged to the first arc-shaped clamp through a first rotating pin, and the other end of the base is hinged to the second arc-shaped clamp through a second rotating pin; the first rotating pin is parallel to the longitudinal sweeping rod, and the second rotating pin is parallel to the transverse sweeping rod.

[0015] Furthermore, the inner sides of the first support plate, the second support plate, the first arc-shaped clamp and the second arc-shaped clamp are all provided with anti-slip ribs, and the outer walls of the first arc-shaped clamp and the second arc-shaped clamp are provided with reinforcing ribs.

[0016] The present invention has the following beneficial effects:

[0017] (1) The reinforcement and anti-loosening structure of the connection node of the external frame of the prefabricated building uses the first support plate and the second support plate to generate a bidirectional elastic thrust through the first spring, so that the longitudinal sweeping rod and the transverse sweeping rod are always subjected to uniform compressive stress, offsetting the displacement caused by construction vibration, and realizing elastic pre-tightening of the internal support assembly. The two sets of clamp assemblies are arranged in a staggered manner, so that the first support plate and the second support plate apply pressure to the longitudinal sweeping rod and the transverse sweeping rod respectively, and the first arc-shaped clamp and the second arc-shaped clamp apply pressure to the longitudinal sweeping rod and the transverse sweeping rod respectively, thereby improving the reinforcement and anti-loosening of the connection node of the longitudinal sweeping rod and the transverse sweeping rod.

[0018] (2) The reinforced anti-loosening structure of the connection node of the prefabricated building external frame limits the circumferential rotation of the bolt by the cooperation of the limit block and the inclined surface structure, and limits the circumferential rotation of the sleeve by the cooperation of the sleeve and the inclined surface structure. At the same time, the pawl and the inner ratchet are coupled to form a one-way lock, ensuring that the nut can only be tightened in one direction, so that the locking nut limits the sleeve from sliding on the bolt, realizing the self-locking of the pre-tightening force, thereby effectively preventing the traditional bolts from loosening and causing a decrease in the safety of the scaffolding.

[0019] (3) The reinforced anti-loosening structure of the connection node of the prefabricated building frame, through the guide design of the slider and the slide groove, enables the first movable arm and the second movable arm to quickly adjust the support plate spacing, and adjust the size of the bidirectional elastic thrust generated by the first spring, which is beneficial to the pre-tightening of the longitudinal sweeping rod and the transverse sweeping rod. The inner ratchet lock can be released by pressing the pawl, and the overall structure can be separated without damage after rotating the nut in the opposite direction, realizing non-destructive disassembly and greatly improving turnover efficiency.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 For the present invention Figure 1 A top view of

[0023] Figure 3 For the present invention Figure 1 The main view;

[0024] Figure 4 A diagram showing the positional relationship between the clamp assembly and the inner support assembly in the present invention;

[0025] Figure 5 For the present invention Figure 4 A top view of

[0026] Figure 6 Schematic diagram of the structure of the inner support assembly in the present invention;

[0027] Figure 7 For the present invention Figure 6 A top view of

[0028] Figure 8 Schematic diagram of the position structure of the slider and the chute in the present invention;

[0029] Figure 9 Schematic diagram of the installation structure of the bolt in the present invention;

[0030] Figure 10 A schematic diagram of the installation structure of the fastener of the present invention;

[0031] Figure 11 For the present invention Figure 10 The main view;

[0032] Figure 12 For the present invention Figure 11 Schematic diagram of the enlarged structure at A;

[0033] Figure 13 Schematic diagram of the installation structure of the pawl in the present invention.

[0034] In the figure, 1. horizontal sweeping rod; 2. longitudinal sweeping rod; 3. internal support assembly; 31. first support plate; 32. second support plate; 33. slide groove; 34. slider; 35. first spring; 36. first movable arm; 37. second movable arm; 4. clamp assembly; 41. base; 42. first arc-shaped clamp; 43. second arc-shaped clamp; 44. inclined structure; 45. through groove; 5. bolt; 6. sleeve; 7. limit block; 8. groove; 9. inner ratchet; 10. nut groove; 11. locking nut; 12. external thread; 13. pawl; 14. movable cavity; 15. second spring. DETAILED DESCRIPTION

[0035] The following is based on Figures 1-13 The invention describes a reinforcement and anti-loosening structure for connection nodes of an assembled building external frame provided by an embodiment of the invention.

[0036] See also Figures 1-13 , an embodiment of the present invention provides a technical solution: a reinforcement and anti-loosening structure for the connection node of the external frame of an assembled building, including an internal support assembly 3, which is composed of a first support plate 31 and a second support plate 32, wherein a first spring 35 is installed between the first support plate 31 and the second support plate 32, wherein the first spring 35 is a compression spring with a large elastic coefficient, so that the first support plate 31 is against the outer wall of the longitudinal sweeping rod 2, and the second support plate 32 is against the outer wall of the transverse sweeping rod 1, so that the first support plate 31 has sufficient thrust to act on the longitudinal sweeping rod 2, and the second support plate 32 has sufficient thrust to act on the transverse sweeping rod 1.

[0037] In addition, in order to achieve the fixation of the horizontal sweeping rod 1 and the longitudinal sweeping rod 2, the reinforcement and anti-loosening structure of the prefabricated building external frame connection node provided in this embodiment also includes a clamp assembly 4. There are two groups of clamp assemblies 4. The two groups of clamp assemblies 4 are staggered on both sides of the inner support assembly 3, so that the two groups of clamp assemblies 4 and the first support plate 31 and the second support plate 32 on the inner support assembly 3 form a staggered clamp structure, thereby achieving the fixation of the horizontal sweeping rod 1 and the longitudinal sweeping rod 2. The clamp assembly 4 in this scheme includes a first arc-shaped clamp 42 and a second arc-shaped clamp 43, wherein the first arc-shaped clamp 42 cooperates with the first support plate 31 to clamp and fix the longitudinal sweeping rod 2, and the second arc-shaped clamp 43 cooperates with the second support plate 32 to clamp and fix the horizontal sweeping rod 1.

[0038] In addition, the reinforcement and anti-loosening structure of the prefabricated building external frame connection node provided by this embodiment also includes bolts 5. There are two groups of bolts 5, which are used to connect the first arc-shaped hoop 42 and the second arc-shaped hoop 43 on the two clamp assemblies 4, so that the first arc-shaped hoop 42 and the second arc-shaped hoop 43 are both close to the inner support assembly 3. It should be noted that in this process, the first support plate 31 and the second support plate 32 respectively apply pressure toward the longitudinal sweeping rod 2 and the transverse sweeping rod 1, and the first arc-shaped hoop 42 and the second arc-shaped hoop 43 respectively apply pressure toward the longitudinal sweeping rod 2 and the transverse sweeping rod 1, thereby improving the reinforcement and anti-loosening at the connection node of the longitudinal sweeping rod 2 and the transverse sweeping rod 1.

[0039] like Figure 1 、 Figure 4 and Figure 9 As shown, in order to improve the stability when the bolt 5 is connected to the two sets of clamp assemblies 4, the clamp assembly 4 provided in this embodiment also includes a through groove 45 and an inclined structure 44. The through groove 45 is arranged at one end of the first arc-shaped clamp 42 and the second arc-shaped clamp 43, and the inclined structure 44 is arranged on the side of the through groove 45 away from the inner support assembly 3.

[0040] It should be noted that in this solution, the through slot 45 is adapted to the bolt 5, wherein one end of the bolt 5 passes through the through slot 45 on the second arc-shaped hoop 43 and is connected to the first arc-shaped hoop 42 on the other clamp assembly 4, that is, the bolt 5 passes through the second arc-shaped hoop 43 and the first arc-shaped hoop 42 on the two sets of clamp assemblies 4 in sequence, and the end of the bolt 5 close to the second arc-shaped hoop 43 is fixed with a limit block 7, and one end of the limit block 7 is adapted to the inclined surface structure 44. The inclined surface structure 44 cooperates with the limit block 7 to limit the rotation of the limit block 7 after tightening, thereby achieving the restriction of the rotation of the bolt 5 and preventing the bolt 5 from loosening. A fastener is provided at the end of the bolt 5 close to the first arc-shaped hoop 42 for limiting the first arc-shaped hoop 42 and the second arc-shaped hoop 43 on the bolt 5. The fastener makes the first arc-shaped hoop 42 and the second arc-shaped hoop 43 close to each other during use, so that the horizontal sweeping rod 1 and the longitudinal sweeping rod 2 are close to each other, so as to improve the reinforcement effect of the building frame connection node.

[0041] like Figures 9-13 As shown, the fastener provided in this embodiment includes a sleeve 6, which is sleeved on the outside of the bolt 5 so that the sleeve 6 can slide along the length direction of the bolt 5, and the end of the sleeve 6 facing the inner support component 3 is adapted to the inclined structure 44. When the sleeve 6 slides to the through groove 45, the sliding of the sleeve 6 is restricted. At this time, the sleeve 6 cooperates with the inclined structure 44 to limit the rotation of the sleeve 6. In addition, a nut groove 10 is provided on the inner wall of the sleeve 6, and the nut groove 10 is located on the side of the inner wall of the sleeve 6 facing the inner support component 3.

[0042] The fastener provided in this embodiment further includes a locking nut 11 , which is threadedly connected to the bolt 5 , and an outer wall of the locking nut 11 is provided with an external thread 12 , which is threadedly connected to the nut groove 10 .

[0043] Specifically, during use, the sleeve 6 is first slid to the through groove 45, and then the locking nut 11 is installed and an external force is applied to the sleeve 6 so that its external thread 12 is threadedly connected with the nut groove 10, thereby realizing the connection between the bolt 5 and the locking nut 11. This connection method can avoid the rotation of the locking nut 11 to the greatest extent because the sleeve 6 is restricted by the inclined structure 44 after being locked, thereby improving the locking effect of the bolt 5.

[0044] like Figures 9-13 As shown, in order to further improve the locking effect of the bolt 5, the fastener provided in this embodiment also includes a groove 8, which is opened at the end of the nut groove 10 away from the inner support assembly 3, and an inner ratchet 9 is fixed in the groove 8, and a movable cavity 14 is opened in the locking nut 11, and a pawl 13 is slidably installed inside the movable cavity 14, wherein the pawl 13 extends out of the groove 8 and adapts to the inner ratchet 9, which is used to limit the reversal of the locking nut 11, thereby limiting the reverse rotation of the locking nut 11.

[0045] It should be noted that, in the later disassembly process, it is necessary to actively press the pawl 13 so that the pawl 13 is retracted into the movable cavity 14. At this time, the reverse restriction of the locking nut 11 is released, and then the locking nut 11 can be reversed. Through the threaded connection between the locking nut 11 and the nut groove 10 and the bolt 5, the locking nut 11 can be moved in the direction away from the inner support assembly 3, and then the restriction of the locking nut 11 on the sleeve 6 is released, so that the sleeve 6 can be removed from the bolt 5, so as to facilitate the removal of the reinforcement and anti-loosening structure of the external frame connection node of the prefabricated building. During installation, since the pawl 13 cooperates with the inner ratchet 9, the locking nut 11 can be restricted from rotating in the opposite direction, thereby limiting the sleeve 6 in the length direction of the bolt 5 to improve the stability of the contact between the sleeve 6 and the inclined structure 44, thereby preventing the locking nut 11 from loosening and improving the practicality of the equipment.

[0046] like Figure 12As shown, to facilitate the disassembly of the locking nut 11, one end of the locking nut 11 provided in this embodiment extends to the outside of the groove 8, and the axial length of the pawl 13 along the locking nut 11 is greater than the axial length of the groove 8, so that when the sleeve 6 is in contact with the inclined structure 44, one end of the pawl 13 can be exposed outside the groove 8, which is conducive to the external force acting on the pawl 13, so that the pawl 13 is retracted into the movable cavity 14 to release the reverse restriction of the locking nut 11. To facilitate the movement of the pawl 13, limiting balls are provided at both ends of the pawl 13, and the inner wall of the movable cavity 14 is provided with a guide rail adapted to the limiting balls. The cooperation between the limiting balls and the guide rail facilitates the guidance of the pawl 13, and a second spring 15 is installed between the bottom of the movable cavity 14 and the pawl 13. The second spring 15 is used to push the pawl 13 out of the movable cavity 14, so that the pawl 13 is coupled with the inner ratchet 9.

[0047] Specifically, when in use, the locking nut 11 rotates forward, and the pawl 13 is squeezed into the movable cavity 14 by the inner ratchet 9, thereby releasing the restriction on the rotation of the locking nut 11. When the locking nut 11 rotates reversely, the pawl 13 is acted upon by the elastic force of the second spring 15 to pop out of the movable cavity 14, thereby achieving locking of the locking nut 11 when it rotates reversely.

[0048] like Figure 6-Figure 8 As shown, in order to improve the connection effect between the inner support assembly 3 and the longitudinal sweeping rod 2 and the transverse sweeping rod 1, the projection of the first support plate 31 and the second support plate 32 provided in this embodiment on the horizontal plane is a "C"-shaped structure, and the projection of the first support plate 31 and the second support plate 32 on the vertical plane is a "cross"-shaped structure, so that the first support plate 31 and the second support plate 32 are respectively fitted with the longitudinal sweeping rod 2 and the transverse sweeping rod 1, thereby increasing the contact area between the inner support assembly 3 and the longitudinal sweeping rod 2 and the transverse sweeping rod 1, thereby improving the connection effect between the inner support assembly 3 and the longitudinal sweeping rod 2 and the transverse sweeping rod 1.

[0049] like Figure 6 As shown, the inner support assembly 3 provided in this embodiment also includes a first movable arm 36 and a second movable arm 37. There are two groups of first movable arms 36, and the two groups of first movable arms 36 are symmetrically arranged. One end of the first movable arm 36 is hinged to the outer wall of the first support plate 31, and the other end of the first movable arm 36 is movably connected to the second support plate 32; there are two groups of second movable arms 37, and the two groups of second movable arms 37 are symmetrically arranged. One end of the second movable arm 37 is hinged to the outer wall of the second support plate 32, and the other end of the second movable arm 37 is movably connected to the first support plate 31.

[0050] It should be noted that the first movable arm 36 and the second movable arm 37 provided in this scheme can improve the lateral support effect of the equipment, so that the connection stability between the first support plate 31 and the second support plate 32 in the internal support assembly 3 is improved, so as to improve the pressure-bearing effect between the first support plate 31 and the second support plate 32. Specifically, during use, when the first support plate 31 and the second support plate 32 are close to each other, the opening angle between the two groups of first movable arms 36 and the two groups of second movable arms 37 becomes larger, and when the first support plate 31 and the second support plate 32 are away from each other, the opening angle between the two groups of first movable arms 36 and the two groups of second movable arms 37 becomes smaller.

[0051] like Figure 6 When the cam 33 is in the unlock state, the first and second levers 36 are unlocked, and the second lever 36 is unlocked, so that the cam 33 can be unlocked and the lever 33 is unlocked.

[0052] like Figure 1-Figure 5 As shown, in order to further improve the stability of the connection between the first arc-shaped clamp 42 and the longitudinal sweeping rod 2, and the second arc-shaped clamp 43 and the transverse sweeping rod 1, in this scheme, the clamp assembly 4 also includes a base 41, one end of the base 41 is hinged to the first arc-shaped clamp 42 through a first rotating pin, and the other end of the base 41 is hinged to the second arc-shaped clamp 43 through a second rotating pin. The base 41 is mainly used to connect the first arc-shaped clamp 42 and the second arc-shaped clamp 43, and to improve the bearing strength of the clamp assembly 4. In addition, the first rotating pin is parallel to the longitudinal sweeping rod 2, and the second rotating pin is parallel to the transverse sweeping rod 1, so that the stability of the first arc-shaped clamp 42 and the longitudinal sweeping rod 2, and the second arc-shaped clamp 43 and the transverse sweeping rod 1 when clamping is improved.

[0053] like Figure 9As shown, the first support plate 31, the second support plate 32, the first arc-shaped clamp 42, and the second arc-shaped clamp 43 provided in this embodiment are all provided with anti-slip ribs on the inner sides, thereby improving the anti-slip effect of the reinforced anti-loosening structure of the connection node of the prefabricated building frame when it contacts the longitudinal sweeping rod 2 and the transverse sweeping rod 1, and the outer walls of the first arc-shaped clamp 42 and the second arc-shaped clamp 43 are provided with reinforcing ribs to improve the structural strength of the first arc-shaped clamp 42 and the second arc-shaped clamp 43.

[0054] When in use (working), the inner support assembly 3 is installed between the transverse sweeping rod 1 and the longitudinal sweeping rod 2, so that the first support plate 31 is against the outer wall of the longitudinal sweeping rod 2, and the second support plate 32 is against the outer wall of the transverse sweeping rod 1. The clamp assembly 4 is installed on both sides of the inner support assembly 3, so that the longitudinal sweeping rod 2 is fixed between the first arc-shaped clamp 42 and the first support plate 31, and the transverse sweeping rod 1 is fixed between the second arc-shaped clamp 43 and the second support plate 32. The bolt 5 is installed between the first arc-shaped clamp 42 and the second arc-shaped clamp 43 on the two clamp assemblies 4. At this time, the limit block 7 is in contact with the inclined structure 44 on the outside of the second arc-shaped clamp 43.

[0055] The sleeve 6 is installed on the bolt 5 and slid to the through groove 45, and then the locking nut 11 is installed and an external force is applied to the sleeve 6 so that its external thread 12 is threadedly connected with the nut groove 10, thereby realizing the connection between the bolt 5 and the locking nut 11. The pawl 13 cooperates with the inner ratchet 9 to limit the reverse rotation of the locking nut 11, thereby improving the position of the sleeve 6 in the length direction of the bolt 5, so as to improve the stability of the contact between the sleeve 6 and the inclined structure 44, thereby preventing the locking nut 11 from loosening and improving the practicality of the equipment.

[0056] During this process, through the cooperation of the bolt 5 and the fastener, the first arc-shaped hoop 42 and the second arc-shaped hoop 43 respectively pull the longitudinal sweeping rod 2 and the transverse sweeping rod 1 closer to each other, thereby increasing the angle between the two groups of first movable arms 36 and the two groups of second movable arms 37, and then the first support plate 31 and the second support plate 32 are closer to each other, further causing the first spring 35 to contract. At this time, the first support plate 31 and the second support plate 32 respectively apply pressure toward the longitudinal sweeping rod 2 and the transverse sweeping rod 1, and the first arc-shaped hoop 42 and the second arc-shaped hoop 43 respectively apply pressure toward the longitudinal sweeping rod 2 and the transverse sweeping rod 1, thereby improving the reinforcement and anti-loosening of the connection node of the longitudinal sweeping rod 2 and the transverse sweeping rod 1.

[0057] During disassembly, the pawl 13 is actively pressed so that the pawl 13 retracts into the movable cavity 14. At this time, the reverse restriction of the locking nut 11 is released, and the locking nut 11 can be reversed. The locking nut 11 is threadedly connected to the nut groove 10 and the bolt 5, and the locking nut 11 can be moved away from the inner support assembly 3. The restriction of the locking nut 11 on the sleeve 6 is then released, so that the sleeve 6 can be removed from the bolt 5, so as to facilitate the dismantling of the reinforcement and anti-loosening structure of the external frame connection node of the prefabricated building.

Claims

1. The reinforcement and anti-loosening structure of the connection node of the prefabricated building frame is characterized by: include: An inner support assembly (3), the inner support assembly (3) consisting of a first support plate (31) and a second support plate (32), wherein a first spring (35) is installed between the first support plate (31) and the second support plate (32) so that the first support plate (31) abuts against the outer wall of the longitudinal sweeping rod (2), and the second support plate (32) abuts against the outer wall of the transverse sweeping rod (1); A clamp assembly (4), wherein the clamp assembly (4) comprises two groups, and the two groups of clamp assemblies (4) are staggeredly arranged on both sides of the inner support assembly (3), and the clamp assembly (4) comprises a first arc-shaped clamp (42) and a second arc-shaped clamp (43), wherein the first arc-shaped clamp (42) cooperates with the first support plate (31) to clamp and fix the longitudinal sweeping rod (2), and the second arc-shaped clamp (43) cooperates with the second support plate (32) to clamp and fix the transverse sweeping rod (1); Bolts (5), the bolts (5) being used to connect the first arc-shaped hoop (42) and the second arc-shaped hoop (43) on the two clamp assemblies (4), so that the first arc-shaped hoop (42) and the second arc-shaped hoop (43) are both moved closer toward the inner support assembly (3); The clamp assembly (4) further comprises: A through groove (45), wherein the through groove (45) is provided at one end of the first arc-shaped hoop (42) and the second arc-shaped hoop (43); An inclined surface structure (44), wherein the inclined surface structure (44) is provided on a side of the through groove (45) away from the inner support assembly (3); One end of the bolt (5) passes through the through slot (45) on the second arc-shaped hoop (43) and is connected to the first arc-shaped hoop (42) on another clamp assembly (4), and a limiting block (7) is fixed to one end of the bolt (5) close to the second arc-shaped hoop (43), and one end of the limiting block (7) is adapted to the inclined structure (44) to limit the rotation of the bolt (5), and a fastener is provided at one end of the bolt (5) close to the first arc-shaped hoop (42) for limiting the first arc-shaped hoop (42) and the second arc-shaped hoop (43) on the bolt (5).

2. The reinforcement and anti-loosening structure of the prefabricated building external frame connection node according to claim 1 is characterized in that: The fastener comprises: A sleeve (6), wherein the sleeve (6) is sleeved on the outside of the bolt (5), and one end of the sleeve (6) facing the inner support assembly (3) is adapted to the inclined surface structure (44) for limiting the rotation of the sleeve (6); a nut groove (10), the nut groove (10) being provided on a side of the inner wall of the sleeve (6) facing the inner support assembly (3); A locking nut (11) is threadedly connected to the bolt (5), and an outer wall of the locking nut (11) is provided with an external thread (12), and the external thread (12) is threadedly connected to the nut groove (10).

3. The reinforcement and anti-loosening structure of the prefabricated building external frame connection node according to claim 2 is characterized in that: The fastener further comprises: A groove (8), wherein the groove (8) is formed at one end of the nut groove (10) away from the inner support assembly (3), and an inner ratchet (9) is fixed in the groove (8); A ratchet (13) is provided on the locking nut (11) with a movable cavity (14), and a ratchet (13) is slidably mounted inside the movable cavity (14), wherein the ratchet (13) extends out of the groove (8) and is adapted to the inner ratchet (9) to limit the reverse rotation of the locking nut (11).

4. The reinforcement and anti-loosening structure of the prefabricated building external frame connection node according to claim 3 is characterized in that: The axial length of the pawl (13) along the locking nut (11) is greater than the axial length of the groove (8), and limiting balls are provided at both ends of the pawl (13). The inner wall of the movable cavity (14) is provided with a guide rail adapted to the limiting balls, and a second spring (15) is installed between the bottom of the movable cavity (14) and the pawl (13), and the second spring (15) is used to push the pawl (13) out of the movable cavity (14).

5. The reinforcement and anti-loosening structure of the connection node of the prefabricated building frame according to claim 4 is characterized in that: The projections of the first support plate (31) and the second support plate (32) on the horizontal plane are a "C"-shaped structure, and the projections of the first support plate (31) and the second support plate (32) on the vertical plane are a "cross"-shaped structure, so that the first support plate (31) and the second support plate (32) are respectively fitted with the longitudinal sweeping rod (2) and the transverse sweeping rod (1).

6. The reinforcement and anti-loosening structure of the prefabricated building external frame connection node according to claim 5, characterized in that: The inner support assembly (3) further comprises: First movable arms (36), there are two groups of the first movable arms (36), the two groups of first movable arms (36) are symmetrically arranged, one end of the first movable arm (36) is hinged to the outer wall of the first support plate (31), and the other end of the first movable arm (36) is movably connected to the second support plate (32); The second movable arms (37) are divided into two groups, and the two groups of second movable arms (37) are symmetrically arranged. One end of the second movable arm (37) is hinged to the outer wall of the second support plate (32), and the other end of the second movable arm (37) is movably connected to the first support plate (31).

7. The reinforcement and anti-loosening structure of the prefabricated building external frame connection node according to claim 6 is characterized in that: The first support plate (31) and the second support plate (32) are both provided with a slide groove (33), the two slide grooves (33) are perpendicular to each other, and sliders (34) are symmetrically provided inside the slide grooves (33); The two sliders (34) on the first support plate (31) are hinged to one end of the second movable arm (37), and the two sliders (34) on the second support plate (32) are hinged to one end of the first movable arm (36).

8. The reinforcement and anti-loosening structure of the prefabricated building external frame connection node according to any one of claims 1 to 7, characterized in that: The clamp assembly (4) further comprises: A base (41), wherein one end of the base (41) is hinged to the first arc-shaped hoop (42) via a first rotating pin, and the other end of the base (41) is hinged to the second arc-shaped hoop (43) via a second rotating pin; The first rotating pin is parallel to the longitudinal sweeping rod (2), and the second rotating pin is parallel to the transverse sweeping rod (1).

9. The reinforcement and anti-loosening structure of the connection node of the prefabricated building frame according to claim 8 is characterized in that: The first support plate (31), the second support plate (32), the first arc-shaped hoop (42), and the second arc-shaped hoop (43) are all provided with anti-slip ribs on their inner sides, and the first arc-shaped hoop (42) and the second arc-shaped hoop (43) are provided with reinforcing ribs on their outer walls.

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