Large-span steel truss connection structureTechnical Field
The utility model relates to the field of truss connection, in particular to a large-span steel truss connection structure.
Background
At present, a roof skeleton of a steel structure building is formed by splicing a steel truss and purlines, and is limited by the influence of construction sites, a large-span steel truss cannot be lifted and installed at one time, truss units are lifted for multiple times, and rod pieces at opposite ends of two adjacent truss units are welded and fixed to realize the assembly of the adjacent truss units.
Aiming at the related technology, in the welding process of truss units, the problems of welding defects, welding deformation and the like easily exist at the connecting joints of adjacent truss units due to the influence of factors such as welding quality and the like, and the connecting strength at the connecting joints of the adjacent truss units is seriously influenced
Disclosure of Invention
In order to facilitate better improving the connection strength of the splicing parts of adjacent truss units, the utility model provides a large-span steel truss connection structure.
The utility model provides a large-span steel truss connecting structure, which adopts the following technical scheme:
the utility model provides a large-span steel truss connection structure, includes the connecting pipe, the tip at the relative member of adjacent truss unit is established to the cover respectively at the connecting pipe both ends, the connecting pipe both ends all are provided with the lock bolt, lock bolt wears to locate connecting pipe and member, lock bolt end still threaded connection has lock nut and the connecting pipe outside supports tightly to set up.
Through adopting above-mentioned technical scheme, assemble adjacent truss unit before, embolia the connecting pipe to the member of truss unit tip earlier on, after two adjacent truss units remove relatively, slide the connecting pipe, until the connecting pipe both ends cover respectively establish the tip at the relative member of adjacent truss unit, finally fix the connecting pipe tip on corresponding member through locking bolt cooperation lock nut, alright realize the fastening connection to adjacent truss unit, compare traditional welded mode, reduce the condition that the joint strength that leads to adjacent truss unit junction because of welding quality is lower, be favorable to promoting the joint strength of adjacent truss unit.
Preferably, the tail end of the locking bolt is further connected with an anti-falling nut in a threaded manner, and the anti-falling nut is abutted against the locking nut.
Through adopting above-mentioned technical scheme, be convenient for through anticreep nut restriction lock nut take place not hard up, be convenient for lock bolt and lock nut can be more firmly fixed the connecting pipe on the member of truss unit.
Preferably, the connecting pipes positioned at the top of the truss units are in one-to-one correspondence with the connecting pipes positioned at the bottom of the truss units; a telescopic rod is arranged between the two corresponding connecting pipes, plug-in parts are arranged on the opposite sides of the two corresponding connecting pipes, and two ends of the telescopic rod are respectively plugged in the plug-in parts of the two corresponding connecting pipes.
Through adopting above-mentioned technical scheme, insert the telescopic link both ends respectively to correspond on the grafting portion of two connecting pipes, realize connecting two connecting pipes at truss unit top and bottom through the telescopic link, be convenient for rise the connection integration of truss unit top connecting pipe and truss unit bottom connecting pipe, be favorable to further promoting the joint strength of two adjacent truss unit junction.
Preferably, the plugging part comprises a plugging hole formed at the outer side of the connecting pipe.
By adopting the technical scheme, the two ends of the telescopic rod are respectively inserted into the inserting holes of the two groups of connecting pipes, so that the two corresponding connecting pipes can be connected through the telescopic rod.
Preferably, the plug-in part comprises a plug-in block arranged at the outer side of the connecting pipe, and a plug-in groove for inserting the end part of the telescopic rod is formed in one side, deviating from the connecting pipe, of the plug-in block.
Through adopting above-mentioned technical scheme, insert the spliced groove to the spliced block that corresponds two connecting pipes respectively with telescopic link both ends in, alright realize connecting through the telescopic link and correspond two connecting pipes for the installation of telescopic link is simple and convenient more.
Preferably, the periphery of the plug block is coaxially connected with an annular plate, and the annular plate is fixed on the connecting pipe through a plurality of connecting bolts.
Through adopting above-mentioned technical scheme for the grafting piece need not with connecting pipe integrated into one piece, passes through a plurality of connecting bolts with the annular plate and fixes in the connecting pipe outside, alright realize installing the grafting piece and fix on the connecting pipe.
Preferably, the telescopic rod comprises a threaded sleeve, and two ends of the threaded sleeve are coaxially connected with screws in a threaded manner.
Through adopting above-mentioned technical scheme, alright realize the flexible of telescopic link through rotating threaded sleeve both ends screw rod, be convenient for peg graft respectively with telescopic link both ends on the grafting portion of corresponding two connecting pipes, realize the connection of corresponding two connecting pipes, this simple structure is practical and easy operation.
Preferably, the outer side of the connecting pipe is further threaded and provided with a limit bolt in a penetrating mode, and the limit bolt stretches into the inner cavity of the connecting pipe.
By adopting the technical scheme, after the connecting pipe is completely sleeved into the rod piece of one truss unit, the limiting bolt is screwed until the limiting bolt is abutted against the rod piece of the truss unit, so that temporary limiting of the connecting pipe is realized, and the situation that the connecting pipe slides off from the end part of the rod piece of the truss unit in the subsequent hoisting and splicing truss unit process is reduced.
In summary, the present utility model includes at least one of the following beneficial technical effects:
1. through embolia respectively to the tip back of adjacent truss unit relative member with connecting pipe both ends, fix the connecting pipe tip on corresponding member through lock bolt cooperation lock nut, realize the connection of adjacent truss unit, be favorable to reducing the condition that easy adjacent truss unit splice welding strength is lower because of welding quality when welding, be convenient for splice adjacent truss unit more firmly.
2. The anti-falling nut is connected with the tail end of the locking bolt in a threaded manner and is abutted against the locking nut, so that the locking nut is conveniently limited to loosen, and the locking bolt is conveniently matched with the locking nut to more tightly fix the end part of the connecting pipe on the corresponding rod piece.
3. The two ends of the telescopic rod are respectively inserted into the inserting parts corresponding to the two opposite sides of the two connecting pipes, so that the connection integrity corresponding to the two connecting pipes is improved through the telescopic rod, and the connection strength of the adjacent truss units is further improved.
Drawings
Fig. 1 is a schematic overall structure of the first embodiment.
Fig. 2 is an exploded view of the first embodiment.
Fig. 3 is a schematic structural view of a second embodiment for illustrating a connection pipe.
Reference numerals illustrate:
1. truss units; 11. a rod piece; 2. a connecting pipe; 21. a locking bolt; 22. a lock nut; 23. a drop-proof nut; 24. a limit bolt; 3. a telescopic rod; 31. a threaded sleeve; 32. a screw; 321. a deflector rod; 4. a plug hole; 5. a plug block; 51. a plug-in groove; 52. and an annular plate.
Detailed Description
The utility model is described in further detail below with reference to fig. 1-3.
The embodiment of the utility model discloses a large-span steel truss connecting structure.
Example 1
Referring to fig. 1 and 2, the truss unit comprises connecting pipes 2 arranged between opposite rods 11 of adjacent truss units 1, wherein in the embodiment, the connecting pipes 2 are conventional metal square tubes; the ends of the connecting pipes 2 are respectively sleeved at the ends of the opposite rod pieces 11 of the adjacent truss units 1, two locking bolts 21 are respectively arranged at the two ends of the connecting pipes 2, the locking bolts 21 are respectively arranged on the connecting pipes 2 and the rod pieces 11 of the truss units 1 in a penetrating mode, locking nuts 22 are respectively connected with the tail ends of the locking bolts 21 in a threaded mode, and the locking nuts 22 are abutted to the outer sides of the connecting pipes 2, so that the connecting pipes 2 are fastened at the ends of the rod pieces 11 of the truss units 1.
Before assembling the truss units 1, the connecting pipes 2 are completely moved into the rod pieces 11 at the end parts of one truss unit 1, after the adjacent truss units 1 are adjusted and aligned subsequently, the connecting pipes 2 are slid until the two ends of the connecting pipes 2 are respectively sleeved on the opposite end parts of the adjacent trusses, and after the connecting pipes 2 are fixed on the rod pieces 11 through the locking bolts 21 and the nuts, the rod pieces 11 opposite to the adjacent truss units 1 can be tightly connected through the connecting pipes 2.
The locking bolt 21 tail end still threaded connection has anticreep nut 23, and anticreep nut 23 supports tightly with lock nut 22 and sets up, is convenient for restrict lock nut 22 through anticreep nut 23 and takes place not hard up, and then is favorable to lock bolt 21 to cooperate lock nut 22 to make connecting pipe 2 can fix the tip at truss unit 1 member 11 more firmly.
And the periphery of the connecting pipe 2 is also threaded with a limit bolt 24, after the connecting pipe 2 is completely moved into the rod piece 11 at the end part of the truss unit 1 before the truss unit 1 is assembled, the limit bolt 24 can be screwed until the limit bolt 24 is abutted against the outer side of the rod piece 11, so that the situation that the connecting pipe 2 slides off from the end part of the rod piece 11 of the truss unit 1 when the position of the truss unit 1 is hoisted later is reduced, and the sliding of the connecting pipe 2 can be restored after the limit bolt 24 is unscrewed later.
The connecting pipes 2 positioned at the top of the truss unit 1 are in one-to-one correspondence with the connecting pipes 2 positioned at the bottom of the truss unit 1, two groups of telescopic rods 3 are arranged between the two corresponding connecting pipes 2, two groups of plugging parts are arranged at the outer sides of the connecting pipes 2 and correspond to the two telescopic rods 3, and the plugging parts are used for inserting the end parts of the telescopic rods 3; the plug-in parts corresponding to the two connecting pipes 2 are oppositely arranged, two ends of the telescopic rod 3 are respectively plugged in the plug-in parts corresponding to one sides of the two connecting pipes 2, the corresponding two connecting pipes 2 are connected through the telescopic rod 3, and the connection strength of the adjacent truss units 1 is further improved.
The telescopic rod 3 includes screw sleeve 31, and screw sleeve 31 both ends all coaxial threaded connection has screw rod 32, and during installation telescopic rod 3, remove telescopic rod 3 to correspond behind the two connecting pipes 2 coaxial rotation screw rod 32, until screw rod 32 at screw sleeve 31 both ends inserts respectively in the grafting portion of corresponding two connecting pipes 2 opposite one side, alright realize connecting two connecting pipes 2 of truss unit 1 top and bottom through telescopic rod 3.
The periphery of one end, far away from the threaded sleeve 31, of the screw rod 32 is vertically connected with a plurality of deflector rods 321, and the deflector rods 321 are uniformly distributed around the periphery of the screw rod 32, so that the screw rod 32 can be conveniently rotated through the deflector rods 321; the end edge of the screw 32 far away from one end of the threaded sleeve 31 is chamfered, so that the screw 32 can be conveniently inserted into the plug-in part.
The grafting portion is including seting up the spliced eye 4 in the connecting rod outside, rotates screw rod 32 at screw sleeve 31 both ends until screw sleeve 31 both ends grafting pole grafting is in the spliced eye 4 that corresponds, alright realize connecting corresponding two connecting pipes 2 through telescopic link 3, the installation of the telescopic link 3 of being convenient for.
The implementation principle of the first embodiment is as follows: the connecting pipe 2 is sleeved on the rod piece 11 at the end part of the truss unit 1 completely, and the limit bolt 24 is screwed until the limit bolt 24 abuts against the rod piece 11 so as to limit the sliding of the connecting pipe 2; adjusting the positions of two adjacent truss units 1 until the end rod pieces 11 of the two adjacent truss units 1 are opposite, unscrewing the limit bolts 24 and sliding the connecting pipes 2 until the two ends of the connecting pipes 2 are respectively sleeved at the end parts of the two adjacent truss units 1 opposite to the rod pieces 11, drilling holes for the locking bolts 21 to penetrate through the connecting pipes 2 and the rod pieces 11, penetrating the locking bolts 21 into the connecting pipes 2 and the rod pieces 11, screwing the locking nuts 22 and the anti-disengaging nuts 23 into the tail ends of the locking bolts 21 in sequence and fixing the end parts of the connecting pipes 2 on the corresponding rod pieces 11, moving the telescopic rods 3 between the top connecting pipes 2 and the bottom connecting pipes 2 of the truss units 1, and respectively inserting the two ends of the telescopic rods into the inserting parts of the two connecting pipes 2 positioned at the top and the bottom of the truss units 1; a secure connection of adjacent truss units 1 is achieved.
Example two
Referring to fig. 3, the implementation two differs from the embodiment one in that: the grafting portion is including setting up the grafting piece 5 in the outside of connecting pipe 2, and the one end that grafting piece 5 deviates from connecting pipe 2 has been seted up and has been supplied telescopic link 3 tip jack groove 51, and when installing telescopic link 3, removes screw sleeve 31 between two corresponding connecting pipes 2 after, rotates screw rod 32 until screw sleeve 31 both ends insert respectively in the jack groove 51 of corresponding two connecting pipes 2 opposite side, alright realize connecting corresponding two connecting pipes 2 through telescopic link 3.
The annular plate 52 is coaxially connected to the periphery of one end of the connecting pipe 2, and the annular plate 52 is fixed on the outer side of the connecting pipe 2 through a plurality of connecting bolts, so that the connecting pipe 2 is manufactured without integrally forming the connecting pipe 2, and the connecting pipe 2 is convenient to detach by the connecting block 5.
The implementation principle of the second embodiment is the same as that of the first embodiment, so that a detailed description thereof will be omitted.
The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.