Locking connecting piece for full-angle connection of square steel

Abstract

The invention discloses a locking connecting piece for all-angle connection of square steel, the locking connecting piece comprises an upper clamp, a lower clamp, an inner hexagonal screw rod, a rear end locking structure and a lateral locking strip, the upper clamp and the lower clamp are the same in structure, and the upper clamp and the lower clamp are tightly attached to each other and penetrate through the inner hexagonal screw rod from the back side to be fixed; rotatable chucks are arranged at the front ends of the upper clamp and the lower clamp, the chucks are provided with clamping necks, the rear ends of the upper clamp and the lower clamp are inserted and fixed through a rear end locking structure, the two side faces of the upper clamp and the lower clamp are vertical and are inserted and fixed through lateral locking strips, and the lateral locking strips and the hexagon socket screws are in the same length direction. The robot has the advantages that the robot is easy to position and execute and suitable for automatic construction; multi-dimensional locking is achieved, and sliding and loosening of the square steel are effectively avoided; due to the fact that the chucks can rotate freely, the locking connecting piece is suitable for fixed connection of two pieces of square steel at any angle, and the requirements of complex assembly engineering of the square steel are met.

Description

Technical Field

[0001] This invention relates to the field of locking connectors for omnidirectional connections of square steel, specifically to a locking connector for omnidirectional connections of square steel. Background Technology

[0002] Traditional square steel connections often employ welding, through-bolts, or external angle brackets or clamps. These methods have the following drawbacks: 1. Difficulty in robot operation: Traditional fasteners are scattered in location, making it difficult for the robot's end effector to switch positions multiple times, which is not conducive to automated construction.

[0003] 2. Uneven stress distribution: Single-point fastening often leads to uneven stress on square steel, which is prone to loosening under long-term wind load or vibration.

[0004] Existing assemblable square steel keels mostly rely on the friction force generated by screw extrusion to achieve fastening, which is prone to axial slippage under gravity or vibration; local point / line stress, large-sized square steel is prone to deformation, making it difficult to be used for heavy steel structure support; while the fixing angle of angle brackets or clamps is limited, usually right angle or small included angle, which cannot be used for connecting square steel at various angles, making it difficult to meet the needs of complex square steel assembly projects.

[0005] 3. Currently, almost all prefabricated square steel uses an external locking structure—the locking components are exposed on the outside of the square steel body structure, causing the size specifications of the square steel to be exceeded, which has the disadvantage of affecting actual construction. Summary of the Invention

[0006] The purpose of this invention is to provide a locking connector for omnidirectional connection of square steel, so as to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solutions: This invention discloses a locking connector for omnidirectional connection of square steel. The locking connector includes an upper clamp, a lower clamp, an internal hexagonal screw, a rear locking structure, and a lateral locking strip. The upper clamp and the lower clamp have the same structure and are directly opposite each other and fixed by the internal hexagonal screw passing through from the back side. The front end of both the upper clamp and the lower clamp is provided with a rotatable chuck, and the chuck is provided with a chuck neck. The rear ends of the upper clamp and the lower clamp are fixed by the rear locking structure. The two sides of the upper clamp and the lower clamp are vertical and fixed by the lateral locking strip, which is in the same length direction as the internal hexagonal screw.

[0008] As an improvement, the bushing of the chuck is threadedly fixed to the limiting shaft, and the front ends of the upper and lower clamps are provided with fixing rings. The fixing rings are rotatably connected to the bushings and the two ends of the fixing rings are limited.

[0009] As an improvement, the locking connector is provided in square steel one, and square steel one and square steel two are fixedly connected by the locking connector. Square steel two is provided with a mating hole, the clamp can be inserted into the mating hole, and the clamp neck can clamp the edge of the mating hole. The upper clamp and the lower clamp are provided with fixed protrusions on opposite sides. The square steel is provided with a straight slot and two opposing locking holes. The straight slot and one of the locking holes are located on the same side of the square steel. The end of the internal hexagonal screw can correspond to the straight slot. The protrusion can be inserted into the locking hole.

[0010] As an improvement, the rear locking structure includes a vertically fixed inverted trapezoidal protrusion and an acute-angle protrusion. The inverted trapezoidal protrusion is inserted into the rear slot where the upper and lower clamps are combined. The length direction of the inverted trapezoidal protrusion is the same as that of the internal hexagonal screw. The acute-angle protrusion is locked in the rear gap where the upper and lower clamps are combined.

[0011] As an improvement, the lateral locking bar is inserted into the side slot where the upper and lower clamps are combined. The side slot is an obtuse-angled ramp groove, and one side of the lateral locking bar is obtuse-angled and open.

[0012] As an improvement, the front end face of the chuck is a hexagonal half separated diagonally, and the mating hole is an octagonal hole.

[0013] The advantages of this invention compared to existing technologies are as follows: the locking connector structure is centralized and installed inside the square steel cavity. Moving the rear locking structure and tightening the screw are both single-point operations, making it easy for robots to position and execute, suitable for automated construction, and without altering the dimensions of the square steel itself. The clamping neck holds square steel two, the protrusion holds square steel one, and the upper and lower clamps press against the inner wall of square steel one, achieving multi-dimensional locking and effectively preventing slippage and loosening of the square steel. The square steel experiences multi-directional and uniform force, and large-sized square steel is less prone to deformation, making it suitable for heavy-duty steel structure support. Because the clamp can rotate freely, this locking connector is suitable for fixing two square steels at any angle, meeting the needs of complex square steel assembly projects. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings listed below are only some structural schematic diagrams of the present invention, and not all of them.

[0015] Figure 1 This is a schematic diagram of the structure of a locking connector for connecting square steel bars according to the present invention. Figure 1 .

[0016] Figure 2 This is a schematic diagram of the structure of a locking connector for connecting square steel bars according to the present invention. Figure 2 .

[0017] Figure 3 This is a side view of the upper and lower clamps of a locking connector for connecting square steel according to the present invention.

[0018] Figure 4 This is a cross-sectional view of a locking connector for connecting square steel bars according to the present invention. Figure 1 .

[0019] Figure 5 This is a side view of a locking connector for connecting square steel according to the present invention.

[0020] Figure 6 This is a schematic diagram of the rear locking structure of a locking connector for connecting square steel according to the present invention.

[0021] Figure 7 This is a schematic diagram of the structure of a lateral locking strip for a locking connector used in square steel connection according to the present invention.

[0022] Figure 8 This is a diagram showing the usage state of a locking connector for connecting square steel according to the present invention.

[0023] Figure 9 This is a cross-sectional view of the use state of a locking connector for connecting square steel according to the present invention.

[0024] Figure 10 This is a schematic diagram of square steel one and square steel two, which are part of a locking connector for connecting square steel according to the present invention.

[0025] Figure 11 This is a cross-sectional view of a locking connector for connecting square steel bars according to the present invention. Figure 2 .

[0026] Figure label: 1. Square steel 1; 11. Straight slot hole; 12. Clamping hole; 2. Square steel 2; 21. Butt joint hole; 3. Upper clamp; 31. Fixing ring; 32. Neck; 33. Side clamping groove; 4. Lower clamp; 41. Protrusion; 42. Rear clamping slot; 43. Rear clamping groove; 5. Hexagonal screw; 6. Rear locking structure; 61. Inverted trapezoidal protrusion; 62. Acute-angle protrusion; 7. Lateral locking strip; 8. Chuck; 81. Neck; 82. Limiting shaft; 83. Bushing. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In the description of the embodiments of the present invention, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0029] Furthermore, the terms "first," "second," and "third" are used only for distinguishing descriptions and should not be interpreted as indicating or implying relative importance. The use of terms such as "horizontal," "vertical," and "suspended" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be perfectly horizontal, but can be slightly tilted.

[0030] In the description of the embodiments of the present invention, the terms "multiple" or "several" refer to at least two.

[0031] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0032] This embodiment, in conjunction with the accompanying drawings, provides a detailed description of a locking connector for omnidirectional connection of square steel.

[0033] This embodiment describes a locking connector for full-angle connection of square steel, such as... Figure 1 , Figure 2As shown, the locking connector is made of metal and includes an upper clamp 3, a lower clamp 4, an internal hexagonal screw 5, a rear locking structure 6, and a lateral locking strip 7. The upper clamp 3 and the lower clamp 4 have the same structure. The upper clamp 3 and the lower clamp 4 are directly opposite each other and are fixed by the internal hexagonal screw 5 passing through from the back side. The internal hexagonal screw 5 is threadedly connected to the upper clamp 3 and the lower clamp 4. The internal hexagonal screw 5 has internal hexagonal holes at both ends. The front end of the upper clamp 3 and the lower clamp 4 are provided with a rotatable chuck 8. The chuck 8 is provided with a chuck neck 81. The rear ends of the upper clamp 3 and the lower clamp 4 are inserted and fixed by the rear locking structure 6. The two sides of the upper clamp 3 and the lower clamp 4 are vertical and are inserted and fixed by the lateral locking strip 7. The lateral locking strip 7 is in the same length direction as the internal hexagonal screw 5.

[0034] like Figure 1 , Figure 9 , Figure 11 As shown, the bushing 83 of the chuck 8 is threadedly fixed to the limiting shaft 82, and the outer end of the limiting shaft 82 has a limiting plate. The front ends of the upper clamp 3 and the lower clamp 4 are both provided with fixing rings 31. The fixing rings 31 are rotatably connected to the bushing 83 and the two ends of the fixing rings 31 are limited.

[0035] like Figure 8 , Figure 9 , Figure 10 As shown, the locking connector is disposed in square steel 1, and square steel 1 and square steel 2 are fixedly connected by the locking connector. Square steel 2 is provided with a mating hole 21, the clamp 8 can be inserted into the mating hole 21, and the clamp neck 81 can clamp the edge of the mating hole 21. The upper clamp 3 and the lower clamp 4 are provided with fixed protrusions 41 on opposite sides. The square steel 1 is provided with a straight slot hole 11 and two opposite locking holes 12. The straight slot hole 11 and one of the locking holes 12 are located on the same side of the square steel 1. The end of the internal hexagonal screw 5 can correspond to the straight slot hole 11. The protrusion 41 can be inserted into the locking hole 12.

[0036] like Figure 6 As shown, the rear locking structure 6 includes a vertically fixed inverted trapezoidal protrusion 61 and an acute-angle protrusion 62. The inverted trapezoidal protrusion 61 is inserted into the rear slot 43 where the upper clamp 3 and the lower clamp 4 are combined. The inverted trapezoidal protrusion 61 is in the same length direction as the internal hexagonal screw 5. The acute-angle protrusion 62 is locked in the rear gap 42 where the upper clamp 3 and the lower clamp 4 are combined.

[0037] like Figure 4 , Figure 7 As shown, the lateral locking strip 7 is inserted into the side slot 33 where the upper clamp 3 and the lower clamp 4 are combined. The side slot 33 is an obtuse-angled sloping groove, and one side of the lateral locking strip 7 is open at an obtuse angle.

[0038] like Figure 1 , Figure 2 , Figure 10 As shown, the front end face of the chuck 8 is a hexagonal half separated diagonally, and the docking hole 21 is an octagonal hole. The hexagonal half is separated so that the two ends of the clamp neck 32 can clamp the edge of the octagonal hole.

[0039] In practice, a robot is used to deliver the fused locking connector into square steel 1, with the angled end of square steel 1 corresponding to the mating hole 21 of square steel 2 (e.g., Figure 9 Insert the chuck 8 into the mating hole 21 of the square steel 2, then insert a hex screwdriver into the straight slot hole 11 and rotate the internal hex screw 5 to separate the upper clamp 3 from the lower clamp 4. The lateral locking strip 7 slides out of the side slot 33, causing the upper clamp 3 and the lower clamp 4 to slide synchronously in opposite directions (as shown). Figure 4 The inverted trapezoidal protrusion 61 serves as a guide until the protrusion 41 is inserted into the locking hole 12. At the same time, the upper clamp 3 and the lower clamp 4 both press against the inner wall of the square steel 1 to eliminate the gap. At this time, the clamp neck 81 clamps the two ends of the mating hole 21 (such as...). Figure 9 ), to complete the locking connection between square steel 1 and square steel 2.

[0040] Since the chuck 8 can rotate freely, this locking connector is suitable for fixing two square steel bars at any angle, meeting the needs of complex square steel bar assembly projects.

[0041] The present invention and its embodiments have been described above. This description is not restrictive, and the actual scope of protection is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this invention should be included within the scope of protection of this invention. Therefore, the scope of protection of this invention should be determined by the scope of the claims.

Claims

1. A locking connector for omnidirectional connection of square steel bars, characterized in that, The locking connector includes an upper clamp (3), a lower clamp (4), an internal hexagonal screw (5), a rear locking structure (6), and a lateral locking strip (7). The upper clamp (3) and the lower clamp (4) have the same structure. The upper clamp (3) and the lower clamp (4) are directly opposite each other and are fixed by the internal hexagonal screw (5) passing through from the back side. The front end of the upper clamp (3) and the lower clamp (4) are provided with a rotatable chuck (8). The chuck (8) is provided with a chuck neck (81). The rear ends of the upper clamp (3) and the lower clamp (4) are fixed by the rear locking structure (6). The two sides of the upper clamp (3) and the lower clamp (4) are vertical and fixed by the lateral locking strip (7). The lateral locking strip (7) is in the same length direction as the internal hexagonal screw (5).

2. A locking connector for full-angle connection of square steel according to claim 1, characterized in that, The bushing (83) of the clamp (8) is threadedly fixed to the limiting shaft (82). The front ends of the upper clamp (3) and the lower clamp (4) are provided with fixing rings (31). The fixing rings (31) are rotatably connected to the bushing (83) and the two ends of the fixing rings (31) are limited.

3. A locking connector for full-angle connection of square steel according to claim 2, characterized in that, The locking connector is located in square steel one (1). Square steel one (1) and square steel two (2) are fixedly connected by the locking connector. Square steel two (2) is provided with a docking hole (21). The clamp (8) can be inserted into the docking hole (21). The clamp neck (81) can clamp the edge of the docking hole (21). The upper clamp (3) and the lower clamp (4) are provided with fixed protrusions (41) on opposite sides. The square steel (1) is provided with a straight slot hole (11) and two opposing locking holes (12). The straight slot hole (11) and one of the locking holes (12) are located on the same side of the square steel (1). The end of the internal hexagonal screw (5) can correspond to the straight slot hole (11). The protrusion (41) can be inserted into the locking hole (12).

4. A locking connector for omnidirectional connection of square steel according to claim 1, characterized in that, The rear locking structure (6) includes a vertically fixed inverted trapezoidal protrusion (61) and an acute-angle protrusion (62). The inverted trapezoidal protrusion (61) is inserted into the rear slot (43) where the upper clamp (3) and the lower clamp (4) are combined. The inverted trapezoidal protrusion (61) is in the same length direction as the internal hexagonal screw (5). The acute-angle protrusion (62) is locked in the rear gap (42) where the upper clamp (3) and the lower clamp (4) are combined.

5. A locking connector for full-angle connection of square steel according to claim 1, characterized in that, The lateral locking strip (7) is inserted into the side slot (33) formed by the upper clamp (3) and the lower clamp (4). The side slot (33) is an obtuse-angled sloping groove, and the lateral locking strip (7) is open on one side at an obtuse angle.

6. A locking connector for full-angle connection of square steel according to claim 3, characterized in that, The front end face of the chuck (8) is a hexagonal half separated diagonally, and the docking hole (21) is an octagonal hole.

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