CN208578220U - Curved surface aluminium veneer curtain wall - Google Patents

Abstract

The utility model discloses curved surface aluminium veneer curtain wall, it is used for curtain wall decoration field, its key points of the technical solution are that: including intersecting the frame-like curtain skeleton of affixed formation, aluminum veneer by column and crossbeam and aluminum veneer being connected to the frame connection component；Aluminum veneer include panel and with the folding edge that is integrally fixed in face plate edge, folding further includes the curved surface forming component for connecting the adjacent folding edge of two aluminum veneers along panel is located at close to the side of curtain skeleton；Curved surface forming component includes connection semi-ring, and for folding along being above provided with and connecting the compatible location hole of semi-ring, connection semi-ring is arranged in the positioning hole on adjacent folding edge on two neighboring aluminum veneer；When aluminum veneer slides on connecting semi-ring, aluminum veneer is rotated centered on the axis for connecting semi-ring, it solves the problems, such as the connector that the skimble-scamble curved surface curtain wall of prior art mean curvature needs various structures different, has achieved the effect that the aluminum veneer connection that can realize the skimble-scamble curved surface curtain wall of curvature using identical connection structure.

Description

Curved surface aluminium veneer curtain wall

Technical field

The utility model relates to curtain wall decoration field, in particular to a kind of curved surface aluminium veneer curtain wall.

Background technique

Aluminium veneer curtain wall is a kind of decorating wall using spliced aluminum veneer as decoration main body, is usually used in building The decoration of inside and outside metope.Aluminium veneer curtain wall form is varied, can form different shape by aluminum veneer of different shapes Metope.Metope of different shapes can also be realized by the connecting method between aluminum veneer and aluminum veneer.Such as guarantee as adjacent Aluminum veneer between have certain angle can be formed surface be curved surface curtain wall.

Existing curved surface curtain wall discloses a kind of hyperboloid such as the Chinese patent that Authorization Notice No. is CN202416645U Aluminum veneer type curtain wall, including curtain skeleton, the first hyperboloid aluminum veneer and the second hyperboloid aluminum veneer, the first surface aluminium One end of veneer is fixedly mounted on curtain skeleton, and the other end is fixedly mounted on U-shaped frame, the second curved surface aluminum veneer One end is fixedly mounted on curtain skeleton, and the other end is fixedly mounted on U-shaped frame, the first hyperboloid aluminum veneer and second The outside of curtain skeleton is symmetrically mounted between hyperboloid aluminum veneer by U-shaped frame.Aluminium sheet is made into the curtain wall with curvature, can do At the shape that curvature is unified, and the skimble-scamble curved surface of curvature can be made into.

But such curved surface curtain wall needs a variety of U-shaped framves or a variety of faces when being made in the skimble-scamble curved surface of curvature The plate aluminum veneer different from angle of the folding between thereon, could demonstrate,prove physical fit.It necessarily may require that there are many processing in this way to be formed not Same part, processes the higher cost of part.

Utility model content

The purpose of the utility model is to provide a kind of curved surface aluminium veneer curtain walls, can be realized using identical connection structure bent The aluminum veneer of the skimble-scamble curved surface curtain wall of rate connects.

The above-mentioned technical purpose of the utility model has the technical scheme that

A kind of curved surface aluminium veneer curtain wall, frame-like curtain skeleton, aluminium list including intersecting affixed formation by column and crossbeam Plate and aluminum veneer is connected to the frame connection component；Aluminum veneer include panel and be integrally fixed in face plate edge Edge is rolled over, folding further includes the curved surface forming for connecting the adjacent folding edge of two aluminum veneers along panel is located at close to the side of curtain skeleton Component；Curved surface forming component includes connection semi-ring, and along being above provided with and connecting the compatible location hole of semi-ring, connection semi-ring is worn folding Positioning hole in folding adjacent on two neighboring aluminum veneer edge；When aluminum veneer slides on connecting semi-ring, aluminum veneer is to connect It is rotated centered on the axis of semi-ring.

By using above-mentioned technical proposal, the folding edge of two aluminum veneers is passed through using connection semi-ring, and is arranged and is connect half On the one hand the location hole of ring adaptation realizes that relative position of the two neighboring aluminum veneer in connection semi-ring axial direction is fixed.Another party Face rotates two aluminum veneers centered on the axis for connecting semi-ring, makes to form hinged structure between two aluminum veneers. Using this hinged form, while guaranteeing the connection of adjacent aluminum veneer, it is adapted to more between two neighboring aluminum veneer Kind angle makes that aluminum veneer difference angle is kept not need fixing piece of different shapes, conveniently adapts to the difference on different curved surfaces Curvature, it is possible to reduce special construction part saves processing cost.Angle between adjacent aluminum veneer is by aluminum veneer and curtain skeleton Shape limitation, can be locked after determining aluminum veneer and curtain skeleton relative position；It should be noted that the utility model The bending in a direction can only be realized in technical solution, can only keep straightened condition on other direction.

Preferably, curved surface forming component further includes two connecting plates, it is provided with and is rolled over along compatible link slot on connecting plate, Folding along being located in link slot, connecting plate be provided with through link slot and with connect the compatible slide opening of semi-ring, connect semi-ring and be arranged in In slide opening.

By using above-mentioned technical proposal, folding edge is clamped using the link slot on connecting plate；Connecting plate can disperse to roll over Along upper concentrated stress, play the role of protection folding edge.

Preferably, the side at two connecting plates one end far from panel towards aluminum veneer centers collapses to be formed towards the other side Cusped edge, the cusped edge of two connecting plates are overlapped with the axis for connecting semi-ring and mutually abut；Between two connecting plates with it is two neighboring Folding is filled with structure glue between.

Reinforce sealing using the gap between structure glue filling aluminum veneer by using above-mentioned technical proposal, filled Decorations, can also play the role of certain rock-steady structure.The setting of cusped edge guarantees under any angle, two neighboring aluminum veneer it Between most of region of gap towards curtain skeleton side sealed by two connecting plates, convenient for the filling of structure glue.

Preferably, the both ends of connection semi-ring are hinged with guidance semi-ring, the hinge axes of semi-ring and the axis for connecting semi-ring are guided Line is vertical；When guiding semi-ring parallel with the connection axis of semi-ring, the two axis is overlapped and can pass through slide opening with connection semi-ring.

By using above-mentioned technical proposal, when guiding semi-ring to be overlapped with the axis for connecting semi-ring, guidance semi-ring can be regarded For the extension of connection semi-loop in the circumferential；When guiding semi-ring not to be overlapped with the axis for connecting semi-ring, guidance semi-ring cannot Across slide opening and location hole, semi-ring is guided as position limiting structure and guarantees connection semi-ring and rolls over the connection on edge.

Preferably, the gap of the one end of two guidance semi-rings far from connection semi-ring forms inlet port；When guidance semi-ring and company Connect semi-ring axis it is parallel when, inlet port allows to roll over along passing through.

By using above-mentioned technical proposal, inlet port is set, can guarantee in connection semi-ring and guidance semi-ring and slide opening and When location hole is aligned, folding edge is not interfered with the two.Guarantee that connecting plate and folding edge can be fit into connection semi-ring.

Preferably, connection component includes the fixed plate being bolted on curtain skeleton, the two sides of fixed plate are respectively and fixedly connected with Have a fixed edge, connect the both ends of semi-ring inner wall respectively on be provided with a fixing groove, it is fixed to fix along being adapted and be located at fixing groove In slot.

By using above-mentioned technical proposal, the mutual cooperation on fixing groove and fixed edge guarantees that fixed plate is connecting with semi-ring is connect The relative position radially for connecing semi-ring is fixed, while may further ensure that connecting plate and folding edge will not take off with semi-ring is connect From.Using the interconnection of fixed plate and curved surface forming component, the connection of curtain skeleton and aluminum veneer is realized.Due to curved surface forming Component is always positioned between two adjacent aluminum veneers, convenient for guarantee fixed plate position always with the gap phase of adjacent aluminum veneer It is right, when installation, convenient for guaranteeing the relative position of aluminum veneer and curtain skeleton.Fixed plate by connection semi-ring can simultaneously with two Aluminum veneer is connected, and is easily installed.

Preferably, fixed plate is provided with limiting slot far from the side of aluminum veneer；The axis for guiding the axis of semi-ring and connecting semi-ring When line is vertical, limiting slot is adapted with guidance semi-ring；When guiding semi-ring to be located in limiting slot, part guides semi-ring to be located at and fixes Between plate and curtain skeleton.

By using above-mentioned technical proposal, after guidance semi-ring is caught in limiting slot, it is ensured that fixed plate and curved surface forming Relative position of the component in the axial direction of connection semi-ring is fixed；When fixed plate is connect with curtain skeleton, curtain skeleton can be borrowed Guidance semi-ring is enclosed in limiting slot, guarantees that the posture of guidance semi-ring remains unchanged；To realize the stabilization of fixed plate and aluminum veneer Connection.

Preferably, the edge of the edge of limiting slot and guidance semi-ring is rounded structure.

By using above-mentioned technical proposal, can be effectively reduced when guidance semi-ring enters limiting slot each other using rounded structure The case where interfering.

Preferably, fixed plate far from affixed there are two connection edge parallel to each other on the end face of aluminum veneer, connects the length on edge It is parallel with the connection axis of semi-ring that fixed plate is connected to spend direction；Crossbeam and column are located at two companies of same fixed plate Connect along between, and the two sides of crossbeam and column respectively with connect along abutting.

Crossbeam and column are partly wrapped using two connections along cooperation fixed plate by using above-mentioned technical proposal；Crossbeam On connection edge and column and column on connection along with each comfortable connection ring moving radially is interfered with each other between crossbeam, Help to ensure that the stabilization between fixed plate and curtain skeleton.

In conclusion the utility model has the following beneficial effects:

1, using curved surface forming component, realize that relative position of the two neighboring aluminum veneer in connection semi-ring axial direction is fixed, And articulated structure is formed, a variety of angles being adapted between two neighboring aluminum veneer conveniently adapt to the difference on different curved surfaces Curvature, it is possible to reduce special construction part saves processing cost；

2, connecting plate can play the role of protection folding edge；

3, it guides semi-ring that can play the role of limitation connection semi-ring, aluminum veneer and fixed plate to be separated from each other；

4, connection is more stable along fixed plate can be made to connect with curtain skeleton；

5, the filling of structure glue is convenient in the setting of cusped edge structure.

Detailed description of the invention

Fig. 1 is schematic diagram of the curved surface aluminium veneer curtain wall backwards to building side；

Fig. 2 is schematic diagram of the curved surface aluminium veneer curtain wall towards building side；

Fig. 3 is the schematic diagram that curved surface forming component connects two aluminum veneers；

Fig. 4 is the cross-sectional view that curved surface forming component connects two aluminum veneers；

Fig. 5 is the structural schematic diagram of connection component；

Fig. 6 is the schematic diagram that connection component is connect with curved surface forming component.

In figure, 1, curtain skeleton；11, column；12, crossbeam；2, aluminum veneer；21, panel；22, edge is rolled over；221, location hole； 3, curved surface forming component；31, semi-ring is connected；311, fixing groove；32, connecting plate；321, link slot；322, slide opening；323, cusped edge； 33, semi-ring is guided；34, inlet port；4, connection component；41, fixed plate；411, fixed edge；412, limiting slot；42, edge is connected；5, Structure glue.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.The wherein identical attached drawing of identical components Label indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "up" and "down" refer to It is the direction in attached drawing, word " bottom surface " and " top surface ", "inner" and "outside" are referred respectively to towards or away from particular elements geometry The direction at center.

A kind of curved surface aluminium veneer curtain wall, as depicted in figs. 1 and 2, the curtain skeleton 1 affixed with building is fixed on curtain wall The aluminum veneer 2 of arc-shaped decorated wall surface, the curved surface forming component 3 of the adjacent aluminum veneer 2 of connection are formed on keel 1 and by aluminum veneer 2 decorated wall surfaces are fixed on the connection component 4 on curtain skeleton 1.

It should be noted that the curved surface of the curtain wall in the utility model may only be bent in a plane, here with compared with The shape that bending status is presented in the horizontal direction for common vertical metope is illustrated.

As shown in Figure 1, curtain skeleton 1 includes multiple columns 11 being vertically arranged and intersects affixed crossbeam with column 11 12.Column 11 determines installation site according to curtain wall surface curvature change.The generally arc of crossbeam 12, in the longitudinal direction uniformly It is divided into multistage, each segment structure is horizontal to be fixed between two neighboring column 11.Crossbeam 12 and column 11 are integrally formed with arc The frame-like of degree, the basic configuration for secured curtain wall.

As shown in connection with fig. 3, the panel 21 of aluminum veneer 2 including rectangle and with the folding that is integrally fixed in 21 edge of panel Along 22.Four are rolled over the same side for being located at panel 21 along 22 foldings.The long strip-board shape along 22 for rectangle is rolled over, each folding hangs down along 22 with panel 21 Four foldings in straight same panel 21 join end to end along 22.

Aluminum veneer 2 on curtain wall decoration metope is uniformly arranged according to neat ranks.Wherein it is in the aluminum veneer 2 of same row Level is connected, and has certain angle between horizontally adjacent aluminum veneer 2；Aluminum veneer 2 in same row is connected vertically, vertical adjacent Aluminum veneer 2 it is parallel to each other.All by song between either vertical adjacent two aluminum veneers 2 or horizontally adjacent aluminum veneer 2 Face molding assembly 3 is attached.

In conjunction with shown in Fig. 1 and Fig. 3, two groups of curved surface molding assemblies 3, one group of curved surface forming are equipped between adjacent aluminum veneer 2 Component 3 includes 31, two connecting plates 32 of a connection semi-ring and two guidance semi-rings 33.Connecting plate 32 is the plate of strip Shape is provided with the link slot 321 parallel with length direction, the link slot in one circumferential side wall of connecting plate 32 in conjunction with Fig. 4 321 are adapted with folding along 22, and folding is along 22 insertion link slots 321, with the protection folding of connecting plate 32 along 22.

As shown in figure 4, connection semi-ring 31 is the major arc semicircular ring that a cross section is rectangle.It is provided with and runs through on connecting plate 32 Link slot 321, and with connect the compatible slide opening 322 of semi-ring 31.Folding opened along 22 there are two with to connect semi-ring 31 compatible Location hole 221.Location hole 221, to it, connects semi-ring 31 and wears with two foldings along 22 with the slide opening 322 being correspondingly connected on plate 32 In location hole 221 and the slide opening 322 being correspondingly connected on plate 32.Enable two aluminum veneers 2 centered on the axis of connection ring Rotation, the axis of connection ring are parallel to its two length direction rolled over along 22 connected.

The both ends for connecting semi-ring 31 are hinged with one end of one of guidance semi-ring 33 respectively.The hinge of two guidance semi-rings 33 Spindle line be overlapped and it is vertical with the axis for connecting semi-ring 31.Guide semi-ring 33 roughly the same with the radius of semi-ring 31 is connected, when drawing Lead semi-ring 33 it is parallel with the connection axis of semi-ring 31 when the axis be overlapped, make to connect semi-ring 31 and guide semi-ring 33 whole in circle It is cyclic annular.It guides semi-ring 33 relatively thin, when its axis is with the coincidence of 31 axis of semi-ring is connect, slide opening can be passed through with connection semi-ring 31 322 and location hole 221.

It guides semi-ring 33 to make when axis is not overlapped with the axis for connecting semi-ring 31, can be used as position limiting structure and guarantee connection Semi-ring 31 will not slip along 22 from connecting plate 32 and folding；When axis is overlapped with the axis for connecting semi-ring 31, and can guarantee When connection ring is penetrated connecting plate 32 and folding along 22, it will not interfere.

The gap of the one end of two guidance semi-rings 33 far from connection semi-ring 31 forms inlet port 34.Guidance semi-ring 33 with connect When the axis of semi-ring 31 is parallel, inlet port 34 allows to roll over to be passed through along 22 and connecting plate 32, guarantees that curved surface forming component 3 can be with aluminium Veneer 2 is installed.

Referring to figure 1 and figure 5, connection component 4 is solid including fixed plate 41, the one being connected on curved surface forming component 3 It connects in the connection in fixed plate 41 along 42 and connection is fixed in along 42 bolt on curtain skeleton 1.Fixed plate 41 is rectangle Plate is the transition structure that curtain skeleton 1 is connect with aluminum veneer 2.41 two sides of fixed plate are respectively and fixedly connected with the fixation edge of strip 411.In conjunction with Fig. 4, it is compatible solid along 411 with fixation close to guiding the both ends of semi-ring 33 to have one to connect 31 inner wall of semi-ring Determine slot 311.As shown in fig. 6, fixed plate 41 is put into two connection semi-rings 31 of two aluminum veneers 2 of connection, the fixation at both ends In the fixing groove 311 for also respectively corresponding two connection semi-rings 31 of insertion along 411.It can guarantee fixed plate 41 and curved surface forming component 3 in connection semi-ring 31 radially relatively fixed.

As shown in figure 5, being opened on surface of the fixed plate 41 far from aluminum veneer 2 there are two limiting slot 412, limiting slot 412 is circle Arc, the edge of limiting slot 412 and the edge of guidance semi-ring 33 are rounded structure.As shown in fig. 6, when the axis of guidance semi-ring 33 When line is vertical with the axis for connecting semi-ring 31, guidance semi-ring 33 can be caught in completely in limiting slot 412 just, it is ensured that fixed Plate 41 and curved surface forming component 3 connect it is relatively fixed in 31 axial direction of semi-ring.

In conjunction with Fig. 1, at this time surface of the fixed plate 41 far from aluminum veneer 2, guide semi-ring 33 surface and connection semi-ring 31 End surface it is concordant；Allow fixed plate 41 that semi-ring 33 will be guided to be pressed on curtain skeleton 1, realizes in connection curtain skeleton 1 While fixed guidance semi-ring 33 lock state.

As shown in fig. 6, connection is integrally fixed on end face of the fixed plate 41 far from aluminum veneer 2 along 42.Each fixed plate 41 On set parallel to each other along 42 along 42, two connections there are two connecting, and the connection that is connect with fixed plate 41 of its length direction is partly The axis of ring 31 is parallel.As shown in Figure 1, wherein horizontally disposed connection is along 42 for connecting cross beam 12, horizontally disposed connection Along 42 for connecting column 11.Corresponding crossbeam 12 or column 11 are wrapped and are supported with two thereon connections by fixed plate 41 Tightly, connection is bolted on crossbeam 12 or column 11 along 42.

It should be noted that guarantee that curtain skeleton 1 can either push down guidance semi-ring 33 and not will lead to guidance semi-ring 33 It is interfered with connecting along 42, needs to rotate guidance semi-ring 33 in mounting plate 41, made to connect semi-ring 31 and guide semi-ring 33 the same sides in the two hinge axes.At this moment, need fixing groove 311 to the linear distance of connection 31 axis of semi-ring, it cannot Greater than the internal diameter of guidance semi-ring 33.It is just can guarantee in this way when guiding semi-ring 33 to turn to connection 31 side of semi-ring, it is fixed to be inserted along 411 It will not be interfered with guidance semi-ring 33 during entering fixing groove 311.

Fig. 4 is reviewed, two connecting plates 32 are in one end of connection 31 axis of semi-ring, close to coupled aluminum veneer 2 The side at center is gradually collapsed towards the other side, forms cusped edge 323 far from one end of panel 21 in connecting plate 32.Same connection ring On two connecting plates 32 cusped edge 323 mutually abut, and cusped edge 323 with connect semi-ring 31 axis coincidence, make two aluminium lists The side in gap is closed between plate 2.As shown in Fig. 2, being filled out in connecting plate 32 and adjacent roll in the gap formed between 22 Filled with structure glue 5, all the position of aluminum veneer 2 can be fixed to a certain extent, and sealing and decoration can be played the role of.

During installation, it first installs and curtain skeleton 1 is mounted on structure trunk, connecting plate 32 is inserted in each aluminum veneer 2 Folding along 22, be then sequentially connected with aluminum veneer 2 since one jiao of curtain wall decoration metope, will guidance semi-ring 33 and connection semi-ring 31 it is whole smooth out with the fingers annular in shape, sequentially pass through slide opening 322 and connecting hole, all aluminum veneers 2 joined together.It will be with connection along 42 Fixed plate 41 be inserted into connection semi-ring 31, rotation guidance semi-ring 33 is caught in limiting slot 412, and connection is hung over pair along 42 On the crossbeam 12 and column 11 answered, determine that connection along 42 correspondence, drills along 42 and curtain skeleton 1 in connection, it will with bolt Curtain skeleton 1 and connection are fixed up along 42.Continue to connect other aluminum veneers 2, until installing.In aluminum veneer 2 far from curtain The gap between aluminum veneer 2 is filled with structure glue 5 in the side of wall keel 1.

This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but As long as all by the protection of Patent Law in the scope of the claims of the utility model.

Claims (9)

1. a kind of curved surface aluminium veneer curtain wall, the frame-like curtain skeleton including intersecting affixed formation by column (11) and crossbeam (12) (1), aluminum veneer (2) and aluminum veneer (2) is connected to the frame connection component (4)；Aluminum veneer (2) include panel (21) with And be integrally fixed in the folding at panel (21) edge along (22), folding is located at the one of panel (21) close curtain skeleton (1) along (22) Side, it is characterised in that: further include curved surface forming component (3) of the adjacent folding along (22) for connecting two aluminum veneers (2)；Curved surface forming Component (3) includes connection semi-ring (31), and folding is provided on (22) and connect the compatible location hole (221) of semi-ring (31), is connected It is interior that semi-ring (31) is arranged in location hole (221) of the adjacent folding along (22) on two neighboring aluminum veneer (2)；When aluminum veneer (2) is even It connects when being slided on semi-ring (31), aluminum veneer (2) is rotated centered on the axis for connecting semi-ring (31).

2. curved surface aluminium veneer curtain wall according to claim 1, it is characterised in that: curved surface forming component (3) further includes two Connecting plate (32) is provided on connecting plate (32) with folding along (22) compatible link slot (321), and folding is located at link slot along (22) (321) in, connecting plate (32) be provided with through link slot (321) and with connect the compatible slide opening (322) of semi-ring (31), connection is partly Ring (31) is arranged in slide opening (322).

3. curved surface aluminium veneer curtain wall according to claim 2, it is characterised in that: two connecting plates (32) are far from panel (21) The side at one end towards aluminum veneer (2) center collapse to be formed cusped edge (323) towards the other side, the cusped edge of two connecting plates (32) (323) it is overlapped with the axis for connecting semi-ring (31) and mutually abuts；With two neighboring folding along (22) between two connecting plates (32) Between be filled with structure glue (5).

4. curved surface aluminium veneer curtain wall according to claim 1, it is characterised in that: the both ends of connection semi-ring (31), which are hinged with, draws It leads semi-ring (33), guides the hinge axes of semi-ring (33) vertical with the axis for connecting semi-ring (31)；When guidance semi-ring (33) and even Connect semi-ring (31) axis it is parallel when, the two axis be overlapped and can with connection semi-ring (31) pass through slide opening (322).

5. curved surface aluminium veneer curtain wall according to claim 4, it is characterised in that: two guidance semi-rings (33) are far from connection half The gap of one end of ring (31) forms inlet port (34)；When guiding semi-ring (33) parallel with the connection axis of semi-ring (31), into Entrance (34) allows to roll over to be passed through along (22).

6. curved surface aluminium veneer curtain wall according to claim 4, it is characterised in that: connection component (4) includes being bolted to Fixed plate (41) on curtain skeleton (1), the two sides of fixed plate (41) have been respectively and fixedly connected with fixed along (411), connection semi-ring (31) The both ends of inner wall respectively on be provided with a fixing groove (311), it is fixed to be adapted along (411) with fixing groove (311) and positioned at fixing groove (311) in.

7. curved surface aluminium veneer curtain wall according to claim 6, it is characterised in that: fixed plate (41) is far from aluminum veneer (2) Side is provided with limiting slot (412)；When guiding the axis of semi-ring (33) vertical with the axis for connecting semi-ring (31), limiting slot (412) It is adapted with guidance semi-ring (33)；When guide semi-ring (33) be located at limiting slot (412) it is interior when, part guide semi-ring (33) be located at admittedly Between fixed board (41) and curtain skeleton (1).

8. curved surface aluminium veneer curtain wall according to claim 6, it is characterised in that: the edge of limiting slot (412) and guidance half The edge of ring (33) is rounded structure.

9. curved surface aluminium veneer curtain wall according to claim 6, it is characterised in that: fixed plate (41) is far from aluminum veneer (2) Affixed there are two connection parallel to each other edge (42) on end face, length direction of the connection along (42) is connect with fixed plate (41) The axis for connecting semi-ring (31) is parallel；Crossbeam (12) and column (11) are located at two connection edges of same fixed plate (41) (42) between, and the two sides of crossbeam (12) and column (11) respectively with connect along (42) abut.