Steel structure connecting piece

Abstract

The invention relates to the technical field of steel structures, in particular to a steel structure connecting piece which comprises a base plate, a connecting cylinder is fixedly mounted on the base plate, the outer wall of the connecting cylinder is conical, the outer wall of the connecting cylinder is gradually enlarged in the direction away from the base plate, a threaded part is arranged outside the connecting cylinder, and a locking ring is in threaded connection with the threaded part outside the connecting cylinder. A plurality of avoiding grooves are formed in the connecting cylinder, the multiple avoiding grooves are circumferentially and evenly formed in the connecting cylinder, the multiple avoiding grooves divide the end, away from the base plate, of the connecting cylinder into multiple clamping parts, and a locking assembly is further installed on the base plate. The clamping part is extruded through the locking ring, the clamping part extrudes the surface of the to-be-connected steel structural part to conduct clamping connection on the steel structural part, the to-be-connected steel structural part does not need to be damaged, the locking ring and the threaded part are in threaded connection, stability is high, the connecting part is not prone to falling off, the locking assembly is further arranged to limit the clamping nut, and the clamping nut is not prone to falling off. And the connection strength and stability of the steel structural member are further ensured.

Description

Technical Field

[0001] The invention relates to the technical field of steel structures, in particular to a steel structure connector. Background Art

[0002] Steel structures are usually connected by riveting, bolting or welding. Among them, bolt connection is to open bolt holes on the two steel structures to be connected, and then use bolts to connect the two steel structures. Bolt connection is a detachable connection, and the steel structure and bolts can be recycled when dismantled. Riveting is similar to bolt connection. Both holes need to be opened on the two steel structures to be connected, and then rivets are driven into the holes to connect the two steel structures. Welding is to connect two steel structures by electric welding. Welding and riveting are both non-detachable connections. Although the connection strength is high, it is not conducive to the disassembly and recycling of steel structures. They are mostly used for connections that do not require frequent disassembly of steel structures.

[0003] When riveting and welding are used after dismantling steel structures, the connection parts need to be destroyed, so the dismantled steel structures need to be cut and leveled before they can be reused. Bolted steel structures have holes, and they are prone to rust and loss after long-term use. In order to avoid insufficient strength at the bolt holes and better positioning during installation, the original holes need to be removed and re-positioned after the bolts are dismantled, and the holes need to be re-drilled, resulting in material loss.

[0004] In order to solve the problems in the prior art that the steel structure connection is cumbersome, inconvenient to disassemble, and causes material loss when the steel structure materials are reused, the Chinese invention patent with application number CN202111154722.9 and name "A Steel Structure Connector" proposes a new type of steel structure connector, including an outer shell; the outer shell is provided with a feed hole; the bottom surface of the feed hole is provided with a conical hole; the bottom surface of the conical hole is provided with a circular hole; the outer shell is fixedly connected with airbag 2, and airbag 2 is located on the bottom surface of the conical hole; airbag 2 is fixedly connected with air guide tube 2; airbag 1 is fixedly installed in the circular hole; airbag 1 is fixedly connected with air guide tube 1; the upper end of airbag 1 is fixedly connected with a pad; the upper end of airbag 2 is fixedly connected with a limiting block; the inner side wall of the outer shell is provided with a slide groove; the connecting block is slidably installed in the slide groove. This patent uses airbags to push limit blocks to clamp and fix steel structures, so as to lock the materials to be connected without damaging the steel structures to be connected, and at the same time, the connecting materials can be easily unlocked.

[0005] However, the above invention uses airbags to lock the steel structural parts, which has a relatively complex structure and poor stability. The airbags are prone to leakage after long-term use, which will eventually lead to a decrease in the connection strength between the steel structural parts and may even cause the connection between the steel structural parts to become detached, resulting in a safety accident.

[0006] Therefore, a steel structure connecting piece is proposed. Summary of the invention

[0007] The object of the present invention is to provide a steel structure connector, which can connect steel structures without damaging the materials to be connected and ensure the stability of the connection between the steel structures, so as to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A steel structure connector, including a chassis, on which is fixedly mounted a connecting tube for inserting a cylindrical steel structure, the outer wall of the connecting tube is conical, the outer wall of the connecting tube gradually increases in the direction away from the chassis, a threaded portion is arranged on the outside of the connecting tube, a locking ring is threadedly connected to the threaded portion on the outside of the connecting tube, a plurality of avoidance grooves are provided on the connecting tube, a plurality of the avoidance grooves are evenly distributed around the circumference of the connecting tube, and the plurality of the avoidance grooves divide an end of the connecting tube away from the chassis into a plurality of clamping portions; when the locking ring moves from an end of the connecting tube close to the chassis toward an end of the connecting tube away from the chassis, the locking ring squeezes the plurality of clamping portions and makes the inner walls of the clamping portions approach the axial direction of the connecting tube to clamp the steel structure.

[0010] By rotating the locking ring, the locking ring is moved away from the base. As the locking ring moves away from the base, the inner wall of the locking ring continuously squeezes the outer wall of the clamping part, and the multiple clamping parts are uniformly tightened toward the axis of the connecting tube. In this way, the outer wall of the cylindrical steel structure inserted into the connecting tube will be squeezed by the inner wall of the clamping part, and the clamping part prevents the steel structure from sliding out of the connecting tube through friction, thereby achieving connection without opening a hole in the connecting part. At the same time, since the clamping part is clamped by an external locking ring, the locking ring and the outer wall of the clamping part are connected by threads, the connection is stable, the locking ring is not easy to fall off, the clamping force of the clamping part on the steel structure is not easy to change, and the connection stability of the steel structure is stronger.

[0011] Preferably, a locking assembly for preventing the locking ring from moving toward the chassis is also installed on the chassis, and the locking assembly includes a plurality of support plates rotatably installed on the chassis, and the plurality of support plates are evenly distributed on the chassis with the axis of the connecting tube as a reference circumference, and the hinges between the support plates and the chassis are provided with torsion springs, and the torsion springs are used to keep the support plates rotating toward the axis of the connecting tube so that the support plates abut against the outer wall of the connecting tube; when the support plates abut against the outer wall of the connecting tube, the end of the support plate away from the hinged end abuts against the end face of the locking ring to prevent the locking ring from moving toward the chassis.

[0012] If the steel structure vibrates, it is easy to cause the locking ring to move. Since the outer wall of the connecting tube is conical, the outer wall of the connecting tube gradually increases in the direction away from the chassis, so when the locking ring is tightened in the direction away from the chassis, the tightening resistance will become greater and greater, so there is no need to worry about the vibration causing the locking ring to move in the direction away from the chassis. Therefore, when preventing the locking ring from loosening, you only need to prevent the locking ring from moving in the direction of the chassis. The support plate of the locking assembly can support the locking ring to prevent the locking ring from rotating in the direction of the chassis when it is vibrated, ensuring that the clamping force of the clamping part on the steel structure will not change, further ensuring the connection strength of the steel structure. The torsion spring ensures that the support plate is always located between the chassis and the locking ring, ensuring that the support plate can always effectively support the locking ring to prevent the locking ring from moving in the direction of the chassis.

[0013] Preferably, a slide groove is formed at one end of the support plate away from the hinged end, a push rod is slidably installed inside the slide groove, a return spring is arranged between the push rod and the bottom of the slide groove, and the return spring is used to keep the push rod extending out of the slide groove.

[0014] When clamping and connecting steel structures, it is impossible to ensure that each steel structure inserted into the connecting tube is the same size because there may be errors in the production of the steel structure inserted into the connecting tube. When the diameter of the steel structure inserted into the inside of the tube is small, in order to ensure that the clamping part can clamp the surface of the steel structure, the locking ring must be rotated in the direction away from the chassis. The length of the support plate is fixed, so it may happen that the support plate is not long enough and the support plate cannot resist the chassis and the locking nut respectively. This may cause the locking ring to move toward the chassis when the steel structure vibrates, thereby causing the locking force on the steel structure to change, causing the connection of the steel structure to loosen. After adding the spring and the push rod, the length of the support plate can be supplemented and extended by the push rod and the spring, so that the push rod can always resist the end face of the locking ring, and the push rod cooperates with the thread to reduce the possibility of loosening of the locking ring.

[0015] Preferably, the number of the support plates is the same as the number of the avoidance grooves, and the plurality of support plates are aligned with the plurality of avoidance grooves one by one. The support plates are all fixedly mounted with friction parts, and the friction parts are made of wear-resistant rubber. When the support plates abut against the outer wall of the connecting tube, the friction parts are inserted into the avoidance grooves and abut against the steel structure clamped by the connecting tube. In order to allow the connecting tube to deform to clamp the steel structure, a plurality of avoidance grooves are provided on the connecting tube, and the avoidance grooves also reduce the contact area between the connecting tube and the steel structure. By arranging the friction parts on the support plates, the friction parts can be inserted into the avoidance grooves, and the friction parts can be contacted with the steel structure plugged into the connecting tube, thereby increasing the resistance of the steel structure when the connecting tube is pulled out, further preventing the steel structure from being separated from the connecting tube, and ensuring the connection strength of the steel structure. The torsion spring can increase the pressure between the friction parts and the steel structure inside the connecting tube, thereby further increasing the friction between the friction parts and the steel structure, and further preventing the steel structure from being separated from the connecting tube.

[0016] Preferably, the push rod is flat, and one end of the push rod extending out of the slide slot is provided with a chamfer. A plurality of slots matching the push rod are provided on one end of the locking ring facing the chassis, and the plurality of slots are evenly distributed on the locking ring with the axis of the locking ring as the reference circumference. Since the elastic force of the reset spring is limited, when the steel structure vibrates, the locking ring may still rotate under the action of the vibration and squeeze the push rod to move toward the chassis. In order to further avoid the loosening of the locking ring and ensure the connection strength of the steel structure, the push rod is set to be flat and inserted into the slot. In this way, when the steel structure vibrates, if the locking ring rotates under the action of the vibration, the side wall of the slot will abut against the side wall of the push rod, and the push rod will cooperate with the side wall of the slot to prevent the locking ring from continuing to rotate, thereby ensuring that the locking ring will not rotate again and will not move toward the chassis. Ensure the locking force of the steel structure.

[0017] Preferably, the side walls of the support plate are provided with grooves, the grooves are connected with the slides, a rotating shaft is rotatably mounted at the bottom of the push rod, a pull rod is fixedly mounted on the rotating shaft, the pull rod passes through the groove and extends out of the slide, and a limiting groove is also provided on the side walls of the support plate, the limiting groove is connected with the groove and the slide, and the position where the limiting groove is connected with the groove is located at one end of the groove close to the chassis. The pull rod can be used to pull the push rod along the groove toward the chassis, so that the push rod can be retracted into the slide. When the pull rod is pulled to the limiting groove, the pull rod is rotated so that the pull rod is stuck in the limiting groove, which can prevent the push rod from re-extending under the action of the reset spring. Since there are multiple support plates and push rods, the setting of the pull rod and the limiting groove can facilitate the removal of the push rod from the slot, and then facilitate the rotation of the locking ring toward the chassis, and facilitate the removal of the steel structure from the connecting tube.

[0018] Preferably, an annular groove is provided at the bottom of the connecting tube, a V-shaped ring is provided inside the annular groove, and the V-shaped ring is made of spring steel. When the steel structure is inserted into the connecting tube, it will also be inserted into the V-shaped ring. The V-shaped ring fits on the steel structure through deformation. If the steel structure is subjected to a pulling force toward the outside of the connecting tube, the V-shaped ring will resist the end face of the annular groove, increase the resistance of the steel structure to move toward the outside of the connecting tube, and ensure that the steel structure will not fall off from the connecting tube easily. The tip of the V-shaped ring is facing the end of the connecting tube away from the chassis, which can make the steel structure more smoothly inserted into the V-shaped ring.

[0019] A magnet is fixedly mounted on the bottom of the connecting tube of the V-shaped ring, and the magnet attracts the end surface of the steel structure inserted into the connecting tube through magnetic force, further improving the connection stability between the steel structure, the connecting tube and the chassis.

[0020] Preferably, an anti-skid rubber is fixedly mounted on the inner wall of the clamping part, the anti-skid rubber protrudes from the inner wall of the clamping part, and the anti-skid rubber is provided with anti-skid lines. The anti-skid rubber can further increase the friction between the clamping part and the steel structure, and ensure that the steel structure will not slip out of the connecting tube. The anti-skid rubber protrudes toward the axial direction of the connecting tube, which is conducive to further increasing the extrusion force between the clamping part and the steel structure when the locking ring squeezes the clamping part, and further increasing the friction between the anti-skid rubber and the steel structure.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. A steel structure connector designed by the present invention is provided with a connecting tube to be sleeved with a steel structure, and a locking ring is provided to lock the connecting tube and the steel structure, without destroying the steel structure to be connected, and a threaded connection is adopted between the locking ring and the threaded part, which has strong stability. The connector is not easy to fall off after long-term use. A locking assembly is also provided to limit the clamping nut, thereby further ensuring the connection strength and stability of the steel structure.

[0023] 2. In the steel structure connector designed by the present invention, the support plate of the locking assembly is responsible for supporting the locking ring to prevent the locking ring from moving toward the chassis and loosening, thereby ensuring the connection stability of the steel structure connector during use. In addition, under the action of the torsion spring, the friction portion on the support plate is also inserted into the avoidance groove and abuts against the surface of the steel structure, making it more difficult for the steel structure to loosen and fall off from the connecting tube.

[0024] 3. A steel structure connector designed by the present invention has a return spring and a push rod slidably arranged on the support plate. The slidably installed push rod can ensure that the push rod can always support the locking ring to ensure that the locking ring will not loosen. A groove is also provided on the end face of the locking ring. After the push rod is inserted into the groove, the locking ring cannot rotate, which further ensures that the locking ring will not loosen and the steel structure will not fall off from the connecting tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure when the friction part of the present invention is not inserted into the avoidance groove;

[0027] Figure 3 It is a front view of the present invention;

[0028] Figure 4 For the present invention Figure 3 Sectional view at AA in the middle;

[0029] Figure 5 For the present invention Figure 3 The enlarged view of point B in the middle;

[0030] Figure 6 For the present invention Figure 4 Enlarged view of point C in the middle;

[0031] Figure 7 For the present invention Figure 4 The enlarged view of point D in the middle;

[0032] Figure 8 It is a three-dimensional schematic diagram of the locking ring in the present invention;

[0033] Fig. 9 It is a three-dimensional schematic diagram of the push rod, rotating shaft and pull rod in the present invention.

[0034] In the figure: 1. chassis; 2. connecting tube; 3. threaded part; 4. locking ring; 5. avoidance groove; 6. clamping part; 7. support plate; 8. torsion spring; 9. slide groove; 10. push rod; 11. reset spring; 12. friction part; 13. chamfer; 14. slot; 15. pull groove; 16. rotating shaft; 17. pull rod; 18. limit groove; 19. V-ring; 20. magnet; 21. anti-skid rubber; 22. anti-skid pattern; 23. annular groove. DETAILED DESCRIPTION

[0035] See also Figures 1 to 9 The present invention provides a steel structure connector, and the technical solution is as follows:

[0036] A steel structure connector includes a chassis 1, on which a connecting tube 2 for inserting a cylindrical steel structure is fixedly installed, the outer wall of the connecting tube 2 is tapered, and the outer wall of the connecting tube 2 gradually increases in the direction away from the chassis 1, a threaded portion 3 is arranged outside the connecting tube 2, and a locking ring 4 is threadedly connected to the threaded portion 3 outside the connecting tube 2, and four avoidance grooves 5 are provided on the connecting tube 2, and the four avoidance grooves 5 are evenly distributed on the circumference of the connecting tube 2, and the four avoidance grooves 5 divide the end of the connecting tube 2 away from the chassis 1 into four clamping parts 6. Anti-skid rubber 21 is fixedly installed on the inner wall of the clamping part 6, and the anti-skid rubber 21 protrudes from the inner wall of the clamping part 6, and anti-skid lines 22 are provided on the anti-skid rubber 21.

[0037] refer to Figure 4 An annular groove 23 is provided at the bottom of the connecting tube 2, and a V-shaped ring 19 is arranged inside the annular groove 23. The V-shaped ring 19 is made of spring steel. The tip of the V-shaped ring 19 faces the end of the connecting tube 2 away from the chassis 1, and a magnet 20 is fixedly installed at the bottom of the connecting tube 2 of the V-ring 19.

[0038] refer to Figures 1 to 4 as well as Figures 6 to 9 The chassis 1 is also provided with a locking assembly for preventing the locking ring 4 from moving toward the chassis 1. The locking assembly includes four support plates 7 rotatably mounted on the chassis 1. The four support plates 7 are evenly distributed on the chassis 1 with the axis of the connecting tube 2 as the reference circumference. The four support plates 7 are aligned with the four avoidance grooves 5 one by one. The support plates 7 are fixedly provided with friction parts 12, which are made of wear-resistant rubber. The hinges between the support plates 7 and the chassis 1 are provided with torsion springs 8, which are used to keep the support plates 7 rotating toward the axis of the connecting tube 2 so that the support plates 7 abut against the outer wall of the connecting tube 2. A slide groove 9 is provided at one end of the support plate 7 away from the hinge end, and a push rod 10 is slidably mounted inside the slide groove 9. The push rod 10 is flat, and a chamfer 13 is provided at one end of the push rod 10 extending out of the slide groove 9. A reset spring 11 is provided between the push rod 10 and the bottom of the slide groove 9, and the reset spring 11 is used to keep the push rod 10 extending out of the slide groove 9. A plurality of slots 14 matching with the push rod 10 are formed on one end of the locking ring 4 facing the chassis 1 . The plurality of slots 14 are evenly distributed on the locking ring 4 with the axis of the locking ring 4 as a reference circumference.

[0039] refer to Figure 5 , the side walls of the support plate 7 are provided with grooves 15, and the grooves 15 are connected with the slide grooves 9. A rotating shaft 16 is rotatably installed at the bottom of the top rod 10, and a pull rod 17 is fixedly installed on the rotating shaft 16. The pull rod 17 passes through the groove 15 and extends out of the slide groove 9. A limiting groove 18 is also provided on the side wall of the support plate 7. The limiting groove 18 is connected with the groove 15 and the slide groove 9, and the position where the limiting groove 18 is connected to the groove 15 is located at the end of the groove 15 close to the chassis 1.

[0040] When using, refer to Figures 1 to 9, fix the chassis 1 with bolts, and then insert the cylindrical steel structure into the interior of the connecting tube 2 from the end of the connecting tube 2 away from the chassis 1. When inserting the steel structure into the interior of the connecting tube 2, it is necessary to let the steel structure pass through the inner ring of the V-ring 19, and let the end face of the steel structure abut against the magnet 20. Then rotate the locking ring 4, let the locking ring 4 engage with the thread of the threaded portion 3, and let the locking ring 4 move along the threaded portion 3 in the direction away from the chassis 1. As the locking ring 4 continues to move in the direction away from the chassis 1, and because the outer wall of the connecting tube 2 gradually increases in the direction away from the chassis 1, the locking ring 4 will continue to squeeze the clamping part 6 on the connecting tube 2, and the clamping part 6 will be deformed in the axial direction of the connecting tube 2 after being squeezed, and the steel structure inside the connecting tube 2 will be clamped. The anti-skid rubber 21 on the inner wall of the clamping part 6 can further increase the friction between the clamping part 6 and the steel structure, and ensure that the steel structure will not slip out of the connecting tube 2.

[0041] refer to Figure 1 , Figure 2 as well as Figure 4 , Figure 5 and Figure 7 , when the locking ring 4 can no longer move away from the chassis 1, stop rotating the locking ring 4. At this time, under the elastic force of the torsion spring 8, the support plate 7 is located between the locking ring 4 and the chassis 1. Subsequently, the pull rod 17 is pulled along the pull groove 15 to allow the push rod 10 to be retracted into the slide groove 9, and the reset spring 11 is compressed. Subsequently, under the action of the torsion spring 8, the support plate 7 rotates toward the outer surface of the connecting tube 2 and sticks to the outer surface of the connecting tube 2. At this time, the friction part 12 is inserted into the avoidance groove 5, and the surface of the friction part 12 abuts against the surface of the steel structure inside the connecting tube 2, increasing the friction force on the steel structure when pulling out the connecting tube 2, and preventing the steel structure from loosening and falling off from the connecting tube 2. Subsequently, the pull rod 17 is released, and under the elastic force of the reset spring 11, the push rod 10 is pushed out of the slide groove 9 again, and the top of the push rod 10 is inserted into the slot 14 on the end face of the locking ring 4. Repeat the above operation until all four push rods 10 are inserted into the slots 14 on the end surface of the locking ring 4. At this point, the connection and installation of all steel structure parts are completed.

[0042] refer to Figure 4 and Figure 7Since the outer wall of the connecting tube 2 is conical, the outer wall of the connecting tube 2 gradually increases in the direction away from the chassis 1. Therefore, when the locking ring 4 is tightened in the direction away from the chassis 1, the tightening resistance will become larger and larger, so there is no need to worry about the vibration causing the locking ring 4 to move in the direction away from the chassis 1. If the steel structure vibrates, the locking ring 4 rotates under the action of the vibration, and then the locking ring 4 may only move in the direction of the chassis 1. However, since the push rod 10 is inserted into the slot 14, the side wall of the slot 14 will abut against the side wall of the push rod 10 when the locking ring 4 rotates. The push rod 10 will cooperate with the side wall of the slot 14 to prevent the locking ring 4 from continuing to rotate, thereby ensuring that the locking ring 4 will not rotate again and will not move in the direction of the chassis 1. Ensure the locking force on the steel structure.

[0043] refer to Figure 4 as well as Figures 7 to 9 Based on the rotation of the locking ring 4 under vibration, it should be noted that there is no need to worry if all the push rods 10 cannot be inserted into the slot 14 during installation. During installation, it is only necessary to ensure that the top of the push rod 10 abuts against the end face of the locking ring 4 at one end where the slot 14 is opened. Because of the limitation of the torsion spring 8 and the outer wall of the connecting tube 2, there is no need to worry about the position of the push rod 10 being offset. The push rod 10 supports the locking ring 4 under the action of the reset spring 11, and can also play a certain limiting role on the locking ring 4 to prevent the locking ring 4 from moving toward the direction of the chassis 1. If the locking ring 4 is deflected due to the vibration of the steel structure, the push rod 10 can be inserted into the slot 14 as soon as the slot 14 passes the push rod 10, preventing the locking ring 4 from continuing to rotate and ensuring that the steel structure will not loosen.

[0044] In addition, reference Figure 4 The magnet 20 inside the connecting tube 2 will attract the end face of the steel structure through magnetic force, further preventing the steel structure from falling off from the connecting tube 2, and ensuring the stability of the connection of the steel structure. If the steel structure is subjected to a pulling force toward the outside of the connecting tube 2, the V-shaped ring 19 will press against the end face of the annular groove 23, increasing the resistance of the steel structure to move out of the connecting tube 2, ensuring that the steel structure will not fall off from the connecting tube 2 easily.

[0045] When it is necessary to remove the steel structure from the inside of the connecting tube 2, refer to Figures 1 to 9First, pull the pull rod 17 along the pull groove 15 toward the chassis 1. When the pull rod 17 is pulled to the limit groove 18, rotate the pull rod 17 to make the pull rod 17 stuck in the limit groove 18. At this time, the push rod 10 is stored in the slide groove 9. Since the pull rod 17 is stuck in the limit groove 18, the return spring 11 cannot drive the push rod 10 to extend out of the slide groove 9 again. Repeat this operation to make all the push rods 10 stored in the slide groove 9, then rotate all the support plates 7 to make all the friction parts 12 on the support plates 7 disengage from the avoidance groove 5, then rotate the locking ring 4 to make the locking ring 4 rotate along the threaded part 3 and move the locking ring 4 toward the chassis 1. When the friction part 12 can reach the outer surface of the locking ring 4, loosen all the support plates 7 to make the friction part 12 rest on the surface of the locking ring 4, then continue to rotate the locking ring 4 to make the locking ring 4 move toward the chassis 1 until the locking ring 4 reaches the edge of the threaded part 3. Then the steel structure can be pulled out along the axis direction of the connecting tube 2 in a direction away from the chassis 1 .

[0046] A specific embodiment of the present invention is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above described embodiment. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments without departing from the principles and ideas of the present invention should still fall within the scope of protection of the present invention.

Claims

1. A steel structure connector, characterized in that: The invention comprises a chassis (1), a connecting tube (2) for inserting a cylindrical steel structure is fixedly mounted on the chassis (1), the outer wall of the connecting tube (2) is conical, the outer wall of the connecting tube (2) gradually increases in size in the direction away from the chassis (1), a threaded portion (3) is arranged on the outside of the connecting tube (2), a locking ring (4) is threadedly connected to the threaded portion (3) on the outside of the connecting tube (2), a plurality of avoidance grooves (5) are arranged on the connecting tube (2), and the plurality of avoidance grooves (5) are evenly distributed on the circumference of the connecting tube (2). The avoidance groove (5) divides the end of the connecting tube (2) away from the chassis (1) into a plurality of clamping parts (6); when the locking ring (4) moves from the end of the connecting tube (2) close to the chassis (1) toward the end of the connecting tube (2) away from the chassis (1), the locking ring (4) squeezes the plurality of clamping parts (6) and makes the inner walls of the clamping parts (6) approach the axis direction of the connecting tube (2) to clamp the steel structure; and a locking assembly for preventing the locking ring (4) from moving toward the chassis (1) is also installed on the chassis (1).

2. A steel structure connector according to claim 1, characterized in that: The locking assembly comprises a plurality of support plates (7) rotatably mounted on the chassis (1); the plurality of support plates (7) are evenly distributed on the chassis (1) with the axis of the connecting tube (2) as a reference circumference; a torsion spring (8) is provided at the hinge between the support plate (7) and the chassis (1); the torsion spring (8) is used to keep the support plate (7) rotating in the direction of the axis of the connecting tube (2) so that the support plate (7) abuts against the outer wall of the connecting tube (2); when the support plate (7) abuts against the outer wall of the connecting tube (2), the end of the support plate (7) away from the hinge end abuts against the end face of the locking ring (4) to prevent the locking ring (4) from moving toward the chassis (1).

3. A steel structure connector according to claim 2, characterized in that: A slide groove (9) is provided at one end of the support plate (7) away from the hinged end, a push rod (10) is slidably installed inside the slide groove (9), a return spring (11) is provided between the push rod (10) and the bottom of the slide groove (9), and the return spring (11) is used to keep the push rod (10) extending out of the slide groove (9).

4. A steel structure connector according to claim 2, characterized in that: The number of the support plates (7) is the same as the number of the avoidance grooves (5), and the plurality of support plates (7) are aligned one by one with the plurality of avoidance grooves (5). The support plates (7) are all fixedly mounted with friction parts (12). When the support plates (7) abut against the outer wall of the connecting tube (2), the friction parts (12) are inserted into the avoidance grooves (5) and abut against the steel structure clamped by the connecting tube (2).

5. A steel structure connector according to claim 3, characterized in that: The push rod (10) is flat, and one end of the push rod (10) extending out of the slide groove (9) is provided with a chamfer (13). The locking ring (4) is provided with a plurality of slots (14) matching the push rod (10) on one end facing the chassis (1). The plurality of slots (14) are evenly distributed on the locking ring (4) with the axis of the locking ring (4) as a reference circumference.

6. A steel structure connector according to claim 5, characterized in that: The side walls of the support plate (7) are provided with grooves (15), and the grooves (15) are connected to the slide grooves (9). A rotating shaft (16) is rotatably installed at the bottom of the top rod (10), and a pull rod (17) is fixedly installed on the rotating shaft (16). The pull rod (17) passes through the grooves (15) and extends out of the slide groove (9). The side walls of the support plate (7) are also provided with limit grooves (18), and the limit grooves (18) are connected to the grooves (15) and the slide grooves (9), and the position where the limit grooves (18) are connected to the grooves (15) is located at one end of the grooves (15) close to the chassis (1).

7. A steel structure connector according to claim 1, characterized in that: The bottom of the connecting tube (2) is provided with an annular groove (23), a V-shaped ring (19) is arranged inside the annular groove (23), the V-shaped ring (19) is made of spring steel, the tip of the V-shaped ring (19) faces the end of the connecting tube (2) away from the chassis (1), and a magnet (20) is fixedly mounted on the bottom of the connecting tube (2) of the V-shaped ring (19).

8. A steel structure connector according to claim 1, characterized in that: An anti-skid rubber (21) is fixedly mounted on the inner wall of the clamping portion (6), the anti-skid rubber (21) protrudes from the inner wall of the clamping portion (6), and an anti-skid pattern (22) is formed on the anti-skid rubber (21).

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