Cross-shaped steel frame fastener

Abstract

The utility model discloses a cross steel frame fastener and relates to the technical field of fasteners, the cross steel frame fastener comprises a shell and a steel frame, the shell is provided with a left opening and a right opening for inserting a horizontal steel frame, the shell is provided with an upper opening and a lower opening for inserting a vertical steel frame, and when the steel frames are inserted in place, a vertical clamping assembly and a transverse clamping assembly start to work; the transverse positioning plate and the vertical positioning plate clamp the steel frame in the middle of the opening, in the moving process of the transverse positioning plate and the vertical positioning plate, all the stabilizing plates move along with the transverse positioning plate and the vertical positioning plate, due to the fact that the fixed ratchet block is meshed with the movable ratchet block, the stabilizing plates cannot expand and move towards the periphery, and the stability of the steel frame is guaranteed; therefore, the installation process of the cross-shaped steel frame becomes simple and efficient, if it is found that the position of a certain rod piece is slightly deviated in the installation process, fine adjustment can be easily conducted on the rod piece through the fastening piece, and local maintenance can be easily conducted when a certain rod piece of the cross-shaped steel frame is damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tight fastener technical field especially relates to a cross steel frame tight fastener. BACKGROUND

[0002] Cross steel frames bear various complex loads in many engineering structures, including vertical gravity loads, horizontal wind loads, etc. The components of the cross steel frame are usually prefabricated in a factory and then transported to the construction site for rapid assembly according to the design drawings.

[0003] The existing assembly method of the cross steel frame is mostly welding or bolt connection. Although this method is stable, the welded cross steel frame is almost a whole structure and is difficult to disassemble. Once a part is damaged and needs to be replaced, a destructive method such as cutting must be used to separate the damaged part, which not only damages the surrounding structure but also increases the maintenance cost and time. The bolt connection requires that the bolt holes on the cross steel frame have a certain precision. If the hole size is too large, the bolt will have a large gap in the hole, which will affect the tightness of the connection and the stability of the structure. If the hole size is too small, the bolt may not be inserted smoothly, and forced insertion may cause the rod to deform or damage the bolt. SUMMARY

[0004] To make up for the shortcomings of the prior art, the utility model aims to solve the problem of difficult installation and disassembly of the cross steel frame and the need to damage the steel frame itself by inserting the horizontal steel frame into the left and right openings of the shell and inserting the vertical steel frame into the upper and lower openings of the shell.

[0005] To solve the problem of the prior art, the technical scheme of the utility model is as follows: a cross steel frame fastener, comprising a shell and a steel frame, the shell is provided with left and right openings for inserting a horizontal steel frame, and the shell is provided with upper and lower openings for inserting a vertical steel frame, the inner wall of the left and right openings of the shell is fixedly connected with a vertical positioning box, the inner cavity of the vertical positioning box is provided with a vertical clamping assembly for driving a horizontal positioning plate to position the horizontal steel frame in the middle part of the left and right openings of the shell, the inner wall of the upper and lower openings of the shell is fixedly connected with a horizontal positioning box, the inner cavity of the horizontal positioning box is provided with a horizontal clamping assembly for driving a vertical positioning plate to position the vertical steel frame in the middle part of the upper and lower openings of the shell, one side of the horizontal positioning plate and the vertical positioning plate is fixedly connected with a stabilizing plate, the outer wall of the shell is provided with a communication groove for the movement of the stabilizing plate, the outer wall of the shell is slidingly connected with a locking plate, the locking plate has two parts that can be separated or combined, and a meshing assembly is arranged between the locking plate and the stabilizing plate for limiting the movement of the stabilizing plate in one direction, and a disassembly assembly is arranged on the outer wall of the locking plate for releasing or locking the stabilizing plate.

[0006] Preferably, the vertical clamping assembly and the horizontal clamping assembly each comprise a square plate, the outer wall of the square plate is rotationally connected with the inner wall of the vertical positioning box and the horizontal positioning box, and the four corners of the square plate are rotationally connected with folding plates, one end of each folding plate is rotationally connected with a moving plate.

[0007] Preferably, the moving plate in the vertical clamping assembly is rotationally connected with the left and right sides of the folding plate, one side of each moving plate is fixedly connected with a vertical moving block, the left and right sides of the vertical positioning box are provided with vertical moving grooves, the inner wall of each vertical moving groove is slidably connected with the outer wall of the vertical moving block, one side of each vertical moving block is fixedly connected with one side of the horizontal positioning plate, and movement of one horizontal positioning plate through the square plate in the vertical positioning box drives all the horizontal positioning plates in the left and right openings of the shell to synchronously shrink inwards or expand outwards.

[0008] Preferably, the moving plate in the horizontal clamping assembly is located on the upper side or the lower side of the folding plate, one side of the moving plate is fixedly connected with a horizontal moving block, the top or the bottom of the horizontal positioning box is provided with a horizontal moving groove, the inner wall of the horizontal moving groove is slidably connected with the outer wall of the horizontal moving block, and one side of the horizontal moving block is fixedly connected with one side of the vertical positioning plate.

[0009] Preferably, the meshing assembly comprises a moving ratchet block, the moving ratchet block is fixedly connected with the two sides of the stable plate, the inner wall of the locking plate is fixedly connected with a fixed ratchet block, and the fixed ratchet block is engaged with the moving ratchet block, so that the stable plate can only move towards the middle and cannot move to expand to the periphery.

[0010] Preferably, the disassembling and assembling assembly comprises a rotating plate, the rotating plate is rotationally connected with the two sides of one of the locking plates, the outer wall of the rotating plate is provided with a disassembling and assembling groove, the two sides of the other locking plate are rotationally connected with disassembling and assembling blocks, and the outer wall of each disassembling and assembling block is slidably connected with the inner wall of the disassembling and assembling groove.

[0011] Preferably, one side of each of the two locking plates is fixedly connected with a sliding block, the outer wall of the shell is provided with a sliding groove, the inner wall of the sliding groove is slidably connected with the inner wall of the sliding block, so that the locking plates can slide in a straight line, one side of one of the locking plates is fixedly connected with a plug-in block, one side of the other locking plate is provided with a plug-in groove, and the inner wall of the plug-in groove is slidably connected with the outer wall of the plug-in block, so that the two locking plates can be stably plugged in.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] The utility model discloses a horizontal steel frame is inserted into the left and right openings of the shell, and the vertical steel frame is inserted into the upper and lower openings of the shell, when the steel frame is inserted in place, the vertical clamping assembly and horizontal clamping assembly start working, and the horizontal positioning plate and vertical positioning plate clamp the steel frame in the middle part of the opening, in the process of moving of the horizontal positioning plate and vertical positioning plate, all the steady plates move along, because the fixed ratchet block and the moving ratchet block are engaged, the steady plate cannot expand and move to all around, and the stability of the steel frame is ensured, thereby the installation process of the cross steel frame can be simple and efficient, if finding that the position of a certain rod piece is slightly deviated in the installation process, the tight fastener can easily adjust it slightly, and if a certain rod piece of the cross steel frame is damaged, local maintenance can be easily carried out.

[0014] The utility model discloses a horizontal steel frame is inserted into the left and right openings of the shell, and the vertical steel frame is inserted into the upper and lower openings of the shell, when the steel frame is inserted in place, the vertical clamping assembly and horizontal clamping assembly start working, and the horizontal positioning plate and vertical positioning plate clamp the steel frame in the middle part of the opening, in the process of moving of the horizontal positioning plate and vertical positioning plate, all the steady plates move along, because the fixed ratchet block and the moving ratchet block are engaged, the steady plate cannot expand and move to all around, and the stability of the steel frame is ensured, thereby the installation process of the cross steel frame can be simple and efficient, if finding that the position of a certain rod piece is slightly deviated in the installation process, the tight fastener can easily adjust it slightly, and if a certain rod piece of the cross steel frame is damaged, local maintenance can be easily carried out. ACCURACY OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic view of the utility model;

[0016] Figure 2 It is the structure schematic view of the shell of the utility model;

[0017] Figure 3 It is the structure schematic view of the vertical positioning box of the utility model;

[0018] Figure 4 It is the structure schematic view of the horizontal positioning box of the utility model.

[0019] Figure 5 It is the structure schematic view of the steady plate of the utility model.

[0020] Figure 6 It is the structure schematic view of the locking plate of the utility model.

[0021] Figure 7 It is the structure schematic view of the fixed ratchet block of the utility model.

[0022] Figure 8 It is the structure schematic view of the rotating plate of the utility model.

[0023] In the drawing marks: 1, the shell; 2, steel frame; 3, vertical positioning box; 4, horizontal positioning plate; 5, horizontal positioning box; 6, vertical positioning plate; 7, stable plate; 8, communication groove; 9, locking plate; 10, square plate; 11, folding plate; 12, moving plate; 13, vertical moving block; 14, vertical moving groove; 15, horizontal moving block; 16, horizontal moving groove; 17, moving ratchet block; 18, fixed ratchet block; 19, rotating plate; 20, disassembly groove; 21, disassembly block; 22, sliding block; 23, sliding groove; 24, plug-in block; 25, plug-in groove. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0025] Please refer to Figures 1-8The utility model provides a kind of cross steel frame 2 fastener, including shell 1 and steel frame 2, shell 1 is set with left and right opening for inserting horizontal steel frame 2, and shell 1 is set with upper and lower opening for inserting vertical steel frame 2, shell 1 is as the main structure of fastener, provide the opening of inserting horizontal and vertical steel frame 2, and protect internal components, ensure that steel frame 2 can be inserted and fixed in fastener stably, accurately, form stable support structure, steel frame 2 is divided into horizontal steel frame 2 and vertical steel frame 2, for building support structure, provide necessary support force, ensure safety and stability during construction, the inner wall of shell 1 left and right opening is fixedly connected with vertical positioning box 3, the inner chamber of vertical positioning box 3 is provided with vertical clamping component for driving horizontal steel frame 2 to be positioned in the middle part of shell 1 left and right opening by horizontal positioning plate 4, the inner wall of shell 1 upper and lower opening is all fixedly connected with horizontal positioning box 5, the inner chamber of horizontal positioning box 5 is provided with horizontal clamping component for driving vertical steel frame 2 to be positioned in the middle part of shell 1 upper and lower opening by vertical positioning plate 6, vertical positioning box 3 and horizontal positioning box 5 are used for positioning and fixed horizontal steel frame 2 and vertical steel frame 2 respectively, ensure that the position of steel frame 2 in fastener is accurate, prevent loosening or displacement, in the shell 1 of each cross connection steel frame 2, vertical positioning box 3 has one, horizontal positioning box 5 has two, the side of vertical positioning box 3, horizontal positioning plate 4 and vertical positioning plate 6 is all fixedly connected with stable plate 7, positioning plate is used to directly contact and fixed steel frame 2, and stable plate 7 is used to enhance the stability of structure, ensure that the position of steel frame 2 in fastener is fixed, prevent loosening or deformation due to external force, the outer wall of shell 1 is set with communication groove 8 to facilitate the movement of stable plate 7, the outer wall of shell 1 is slidably connected with locking plate 9, locking plate 9 has two and can be separated or combined, and meshing component is arranged between locking plate 9 and stable plate 7 for limiting stable plate 7 to only one-way movement, the outer wall of locking plate 9 is provided with dismounting component for releasing or locking the limitation to stable plate 7, by inserting horizontal steel frame 2 into the left and right opening of shell 1, vertical steel frame 2 is inserted into the upper and lower opening of shell 1, when steel frame 2 is inserted in place, vertical clamping component and horizontal clamping component start to work, horizontal positioning plate 4 and vertical positioning plate 6 clamp steel frame 2 in the middle part of opening, in the process of horizontal positioning plate 4 and vertical positioning plate 6 movement, all stable plate 7 moves along, since fixed ratchet block 18 is engaged with moving ratchet block 17, stable plate 7 cannot expand and move to all around, ensure the stability of steel frame 2, so that the installation process of cross steel frame 2 becomes simple and efficient, if the position of certain rod slightly deviates during installation, using fastener can easily adjust it, and the local repair of certain rod of cross steel frame 2 can be easily carried out if it is damaged.

[0026] Please refer to Figures 2-4The vertical clamping assembly and the horizontal clamping assembly each comprise a square plate 10, the outer wall of the square plate 10 is rotationally connected with the inner wall of the vertical positioning box 3 and the horizontal positioning box 5, the four corners of the square plate 10 are rotationally connected with a folding plate 11, one end of the folding plate 11 is rotationally connected with a moving plate 12, the vertical clamping assembly and the horizontal clamping assembly are linked through the square plate 10, the folding plate 11 and the moving plate 12, the positioning and clamping of the steel frame 2 are realized, the connecting strength between the steel frame 2 and the fastening piece is enhanced, and the stability of the overall structure is improved.

[0027] Please refer to Figure 3 The moving plate 12 in the vertical clamping assembly is rotationally connected to the left and right sides of the folding plate 11, one side of each of the two moving plates 12 is fixedly connected with a vertical moving block 13, the left and right sides of the vertical positioning box 3 are provided with vertical moving grooves 14, the inner wall of the vertical moving groove 14 is slidably connected with the outer wall of the vertical moving block 13, one side of the vertical moving block 13 is fixedly connected with one side of the horizontal positioning plate 4, and one horizontal positioning plate 4 moves through the square plate 10 in the vertical positioning box 3 to rotate, thereby driving all the horizontal positioning plates 4 in the left and right openings of the shell 1 to synchronously shrink inward or expand outward.

[0028] Please refer to Figure 4 The moving plate 12 in the horizontal clamping assembly is located on the upper side or the lower side of the folding plate 11, one side of the moving plate 12 is fixedly connected with a horizontal moving block 15, the top or the bottom of the horizontal positioning box 5 is provided with a horizontal moving groove 16, the inner wall of the horizontal moving groove 16 is slidably connected with the outer wall of the horizontal moving block 15, one side of the horizontal moving block 15 is fixedly connected with one side of the vertical positioning plate 6, and one vertical positioning plate 6 moves through the square plate 10 in the horizontal positioning box 5 to rotate, thereby driving the vertical positioning plates 6 in the upper opening or the lower opening of the shell 1 to synchronously shrink inward or expand outward.

[0029] Please refer to Figure 7 The meshing assembly comprises a moving ratchet block 17, the moving ratchet block 17 is fixedly connected with the two sides of the stabilizing plate 7, the inner wall of the locking plate 9 is fixedly connected with a fixed ratchet block 18, the fixed ratchet block 18 is engaged with the moving ratchet block 17, so that the stabilizing plate 7 can only move towards the middle and cannot move towards the periphery, the meshing assembly is used for limiting the one-way movement of the stabilizing plate 7, preventing the stabilizing plate 7 from moving uncontrollably, thereby ensuring the stability of the steel frame 2 in the fastening piece.

[0030] Please refer to Figure 8The disassembling and assembling component comprises a rotating plate 19, which is rotatably connected to two sides of one of the locking plates 9, and the outer wall of the rotating plate 19 is provided with a disassembling groove 20; the other locking plate 9 is rotatably connected with a disassembling block 21 on two sides, and the outer wall of the disassembling block 21 is slidably connected with the inner wall of the disassembling groove 20; when the disassembling block 21 is parallel to the disassembling groove 20, the disassembling block 21 can pass through the disassembling groove 20, and when the disassembling block 21 crosses the disassembling groove 20, the disassembling block 21 cannot pass through the disassembling groove 20; the disassembling and assembling component allows the user to conveniently release or lock the restriction on the stabilizing plate 7, so as to disassemble and assemble the steel frame 2, and improves the flexibility and ease of use of the fastener, so that the user can quickly disassemble and assemble according to the needs; by rotating the disassembling block 21 to make the disassembling block 21 parallel to the disassembling groove 20, and then rotating the rotating plate 19 to make the disassembling groove 20 separate from the disassembling block 21, so as to allow the stabilizing plate 7 to move, and then sliding the locking plate 9 to the two sides to make the fixed ratchet block 18 separate from the moving ratchet block 17, so as to release the locking of the stabilizing plate 7, and finally the steel frame 2 can be easily taken out, so that when a rod of the cross steel frame 2 is damaged, local maintenance can be easily performed, and the entire steel frame 2 structure is not greatly affected; compared with the welded structure, the maintenance often needs complex operations such as cutting and re-welding, and the fastener itself is also easy to replace.

[0031] Please refer to Figure 6 One side of each of the two locking plates 9 is fixedly connected with a sliding block 22, and the outer wall of the shell 1 is provided with a sliding groove 23, and the inner wall of the sliding groove 23 is slidably connected with the inner wall of the sliding block 22, so as to make the locking plate 9 keep straight sliding; the sliding block 22 and the sliding groove 23 ensure that the locking plate 9 can keep straight sliding, prevent deviation or jamming, improve the stability and smoothness of the sliding of the locking plate 9, and thus enhance the stability of the overall structure; one side of one of the locking plates 9 is fixedly connected with a plug-in block 24, and one side of the other locking plate 9 is provided with a plug-in groove 25, and the inner wall of the plug-in groove 25 is slidably connected with the outer wall of the plug-in block 24, so as to make the two locking plates 9 stably plug-in; the plug-in block 24 and the plug-in groove 25 are used for stably plugging in the two locking plates 9, and enhance the stability of the structure; through the design of the plug-in block 24, the two locking plates 9 can be closely connected together, and prevent separation or loosening due to external force.

[0032] In use, the operator inserts the horizontal steel frame 2 into the left and right openings of the outer shell 1, and inserts the vertical steel frame 2 into the upper and lower openings of the outer shell 1, when the steel frame 2 is inserted into position, the vertical clamping assembly and the horizontal clamping assembly start to work, for the horizontal steel frame 2, a stable plate 7 connected with the horizontal positioning plate 4 is pushed to move to the middle, the horizontal positioning plate 4 drives the vertical moving block 13 connected therewith to slide along the inner wall of the vertical moving groove 14, the vertical moving block 13 drives the moving plate 12 to move, the moving plate 12 drives the folding plate 11 to move synchronously, the moving plate 12 drives the folding plate 11 to move, the folding plate 11 drives the square plate 10 to rotate, the square plate 10 drives the horizontal positioning plate 4 around to move to the middle simultaneously, that is, all the horizontal positioning plate 4 in the left and right openings of the outer shell 1 is retracted to the middle synchronously, clamping the horizontal steel frame 2 in the middle of the left and right openings, for the upper vertical steel frame 2, a stable plate 7 connected with the upper vertical positioning plate 6 is pushed to move to the middle, the horizontal positioning plate 4 drives the horizontal moving block 15 connected therewith to slide along the inner wall of the horizontal moving groove, the horizontal moving block 15 drives the moving plate 12 to move, the moving plate 12 drives the folding plate 11 to move, the folding plate 11 drives the square plate 10 to rotate, the square plate 10 drives the vertical positioning plate 6 around to move to the middle simultaneously, clamping the upper vertical steel frame 2 in the middle of the upper opening, for the lower vertical steel frame 2, a stable plate 7 connected with the lower vertical positioning plate 6 is pushed to move to the middle, which clamps the lower vertical steel frame 2 in the middle of the lower opening, in the process of moving of the horizontal positioning plate 4 and the vertical positioning plate 6, all the stable plates 7 move with them, when the steel frame 2 is clamped, the stable plates 7 also move to the appropriate position, at this time, since the fixed ratchet block 18 on the locking plate 9 is engaged with the moving ratchet block 17 on the stable plate 7, the stable plate 7 is locked in the current position and cannot expand to the four directions, thereby ensuring the stability of the steel frame 2, when the steel frame 2 needs to be disassembled, the disassembly block 21 is rotated to make the disassembly block 21 parallel to the disassembly groove 20, and then the rotating plate 19 is rotated to make the disassembly groove 20 separate from the disassembly block 21, thereby allowing the stable plate 7 to move, then the locking plate 9 is slid to the two sides to make the fixed ratchet block 18 separate from the moving ratchet block 17, thereby releasing the locking of the stable plate 7, finally the steel frame 2 can be easily taken out.

[0033] Although the embodiments of the present application have been shown and described, it is to be understood that for the purpose of the present application, the changes, modifications, equivalents, substitutions and variations of the embodiments can be made by those skilled in the art without departing from the spirit and principles of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A cross steel frame (2) fastener, comprising a shell (1) and a steel frame (2), characterized in that: The shell (1) is provided with left and right openings for inserting horizontal steel frames (2), and upper and lower openings for inserting vertical steel frames (2), the inner wall of the left and right openings of the shell (1) is fixedly connected with a vertical positioning box (3), the inner cavity of the vertical positioning box (3) is provided with a vertical clamping assembly for driving the horizontal steel frame (2) to be positioned in the middle part of the left and right openings of the shell (1), the inner wall of the upper and lower openings of the shell (1) is fixedly connected with a horizontal positioning box (5), the inner cavity of the horizontal positioning box (5) is provided with a horizontal clamping assembly for driving the vertical steel frame (2) to be positioned in the middle part of the upper and lower openings of the shell (1), one side of the horizontal positioning plate (4) and the vertical positioning plate (6) is fixedly connected with a stabilizing plate (7), the outer wall of the shell (1) is provided with a communication groove (8) for facilitating the movement of the stabilizing plate (7), the outer wall of the shell (1) is slidably connected with a locking plate (9), the locking plate (9) can be separated or combined, and the locking plate (9) and the stabilizing plate (7) are provided with an engagement assembly for limiting the stabilizing plate (7) to move in one direction only, the outer wall of the locking plate (9) is provided with a dismounting assembly for releasing or locking the stabilizing plate (7).

2. A cruciform steel frame (2) clip according to claim 1, characterised in that: The vertical clamping assembly and the horizontal clamping assembly each include a square plate (10), the outer wall of the square plate (10) is rotatably connected with the inner wall of the vertical positioning box (3) and the horizontal positioning box (5), the four corners of the square plate (10) are rotatably connected with a folding plate (11), one end of the folding plate (11) is rotatably connected with a moving plate (12).

3. A cruciform steel frame (2) clip according to claim 2, characterised in that: The moving plate (12) in the vertical clamping assembly is rotatably connected to the left and right sides of the folding plate (11), one side of each of the two moving plates (12) is fixedly connected with a vertical moving block (13), the left and right sides of the vertical positioning box (3) are provided with vertical moving grooves (14), the inner wall of the vertical moving groove (14) is slidably connected with the outer wall of the vertical moving block (13), one side of the vertical moving block (13) is fixedly connected with one side of the horizontal positioning plate (4), one horizontal positioning plate (4) moves through the rotation of the square plate (10) in the vertical positioning box (3) to drive all the horizontal positioning plates (4) in the left and right openings of the shell (1) to shrink inward or expand outward synchronously.

4. A cruciform steel frame (2) clip according to claim 2, characterised in that: The moving plate (12) in the horizontal clamping assembly is located on the upper side or the lower side of the folding plate (11), one side of the moving plate (12) is fixedly connected with a horizontal moving block (15), the top or the bottom of the horizontal positioning box (5) is provided with a horizontal moving groove (16), the inner wall of the horizontal moving groove (16) is slidably connected with the outer wall of the horizontal moving block (15), one side of the horizontal moving block (15) is fixedly connected with one side of the vertical positioning plate (6), one vertical positioning plate (6) moves through the rotation of the square plate (10) in the horizontal positioning box (5) to drive the vertical positioning plates (6) in the upper opening or the lower opening of the shell (1) to shrink inward or expand outward synchronously.

5. The cross steel frame (2) fastener according to claim 1, characterized in that: The engaging assembly comprises a moving ratchet block (17) fixedly connected with both sides of the stable plate (7), the inner wall of the locking plate (9) is fixedly connected with a fixed ratchet block (18), the fixed ratchet block (18) is engaged with the moving ratchet block (17) so that the stable plate (7) can only move to the middle and cannot move to the periphery.

6. A cruciform steel frame (2) clip according to claim 1, characterised in that: The disassembling assembly comprises a rotating plate (19) rotatably connected with both sides of one of the locking plates (9), and the outer wall of the rotating plate (19) is provided with a disassembling groove (20); the other locking plate (9) is rotatably connected with a disassembling block (21) on both sides, and the outer wall of the disassembling block (21) is slidably connected with the inner wall of the disassembling groove (20).

7. A cruciform steel frame (2) clip according to claim 1, characterised in that: One side of each of the locking plates (9) is fixedly connected with a sliding block (22), and the outer wall of the shell (1) is provided with a sliding groove (23); the inner wall of the sliding groove (23) is slidably connected with the inner wall of the sliding block (22) so as to keep the locking plate (9) linearly sliding.

8. The cross steel frame (2) fastener according to claim 1, characterized in that: One side of one of the locking plates (9) is fixedly connected with a plug-in block (24), and one side of the other locking plate (9) is provided with a plug-in groove (25); the inner wall of the plug-in groove (25) is slidably connected with the outer wall of the plug-in block (24) so as to stably plug the two locking plates (9).

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