CN219081106U

CN219081106U - Large-span prestressed girder supporting structure

Info

Publication number: CN219081106U
Application number: CN202223598730.5U
Authority: CN
Inventors: 唐刚; 吴明江; 吴永俊
Original assignee: China Chuanhai Construction Co ltd
Current assignee: China Chuanhai Construction Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-05-26
Anticipated expiration: 2032-12-30

Abstract

The application relates to a large-span prestressed girder bearing structure belongs to construction technical field, and large-span prestressed girder bearing structure includes the bailey piece of both sides, have upper portion chord member on the bailey piece, still include two fixed blocks and rotate the rolling pole that sets up between two fixed blocks, two the fixed block passes through the connecting rod to be connected, the axis of rotation of rolling pole is on a parallel with the length direction of bailey piece, around being equipped with anti-drop net on the rolling pole, any be provided with on the fixed block and be used for making rolling pole and fixed subassembly relatively fixed of fixed block, both sides all be provided with the connecting piece that is used for connecting upper portion chord member on fixed block and anti-drop net keep away from the two angles of rolling pole. The anti-falling net is convenient to use on the bailey pieces with different intervals, and the cost is saved to a certain extent.

Description

Large-span prestressed girder supporting structure

Technical Field

The application relates to the technical field of building construction, in particular to a large-span prestressed girder supporting structure.

Background

Currently, large public buildings such as reporting halls, convention centers, stadiums and the like generally employ a large span prestressed girder structure in order to improve the crack and deformation performance of structural members. When the large-span prestress beam is constructed, a bailey truss structure is generally adopted for supporting.

In the related art, as disclosed in chinese patent document with publication number CN210369895U, a support system for a bailey beam with an ultrahigh large formwork in a building is disclosed, and the support system comprises a plurality of lower support beams, a plurality of bailey beams He Duo i-beams, the lower support beams are spliced together end to form a special-shaped frame shape, the plurality of bailey beams are erected on the lower support beams, the plurality of i-beams are detachably connected to the upper ends of the bailey beams, the bailey beams are formed by overlapping a plurality of bailey sheets and a connecting net frame, the bailey sheets are provided with upper chords, an anti-falling net is tied between the upper chords of the bailey sheets at two sides of the connecting net frame, the i-beams are used for supporting prestressed concrete beams, a plurality of pedals are paved on the upper surfaces of the i-beams, and the pedals are positioned above the anti-falling net. The bailey beam and the I-steel are combined to be used as a support system of the prestressed concrete beam at the upper part, four corners of the anti-falling net are fixedly arranged at the upper chord of the bailey piece, so that the protecting effect is achieved, and people or objects are not easy to fall down.

Aiming at the related technology, when the supporting structure supports the prestress beams with different widths, the bailey pieces on two sides of the connecting net frame are different in distance, so that the anti-falling net with different sizes needs to be replaced, and the cost is high.

Disclosure of Invention

In order to facilitate the falling prevention net to be suitable for the bailey pieces with different intervals, the cost is saved to a certain extent, and the application provides a large-span prestress beam supporting structure.

The application provides a large-span prestressing force roof beam bearing structure adopts following technical scheme:

the utility model provides a large-span prestressing force roof beam bearing structure, includes the bailey piece of both sides, upper portion chord member has on the bailey piece, still includes two fixed blocks and rotates the rolling pole that sets up between two fixed blocks, two the fixed block passes through the connecting rod and connects, the axis of rotation of rolling pole is on a parallel with the length direction of bailey piece, around being equipped with anti-falling net on the rolling pole, arbitrary be provided with on the fixed block and be used for making rolling pole and fixed block relatively fixed's fixed subassembly, both sides all be provided with the connecting piece that is used for connecting upper portion chord member on fixed block and anti-falling net keep away from the two angles of rolling pole.

Through adopting above-mentioned technical scheme, rotate the rolling pole and roll up or unreel to preventing the net that falls, make rolling pole and fixed block relatively fixed through fixed subassembly to can be according to the size that the net was expanded that falls is prevented in interval adjustment between the bailey piece of both sides, install the net that falls to upper portion chord member through the connecting piece, when the interval of bailey piece of both sides changes, need not to change the net that falls, can save the cost to a certain extent.

Preferably, the fixed subassembly is including the cover establish gear on the rolling pole, slip setting arc tooth on the fixed block and the impeller of setting on the fixed block, arc tooth slides towards the direction that is close to or keeps away from the gear, arc tooth is used for with gear engagement, impeller is used for promoting arc tooth and slides towards the direction that is close to the gear.

By adopting the technical scheme, the pushing piece pushes the arc-shaped teeth to slide towards the direction close to the gear, so that the arc-shaped teeth are meshed with the gear, the rotation of the gear and the winding rod is limited, the winding rod and the fixed block are relatively fixed, and the stable use of the falling-preventing net is facilitated; the arc teeth are moved towards the direction away from the gear, so that the arc teeth are separated from the gear, the winding rod is conveniently rotated to wind or unwind the anti-falling net, the unfolding size of the anti-falling net is adjusted according to the distance between the bailey pieces on two sides, the anti-falling net is not required to be replaced every time, and cost is saved.

Preferably, the pushing piece comprises a first spring for pushing the arc-shaped tooth to slide towards a direction close to the gear, one end of the first spring is arranged on the arc-shaped tooth, and the other end of the first spring is arranged on the fixed block.

Through adopting above-mentioned technical scheme, promote the arc tooth through first spring and slide towards the direction that is close to the gear, make arc tooth and gear engagement, and then can restrict the rotation of winding lever to guarantee the stability of preventing dropping net.

Preferably, the connecting piece is including setting up respectively in the knot area on two angles that prevent falling net kept away from the rolling pole and the fixed block, the knot area is used for around establishing on upper portion chord member, the knot area is close to the one end that prevents falling net and is provided with the fixed column, the one end that the fixed column kept away from the knot area is provided with the arc piece, the arc piece is outwards convex towards the direction of keeping away from the fixed column, a plurality of through-holes that are used for supplying arc piece and fixed column to pass have been seted up to the one end that prevents falling net in the knot area, the diameter of arc piece is greater than the diameter of through-hole, the breach has been seted up along the central line on arc piece and the fixed column, breach spanned arc piece and fixed column, the one side that the arc piece is close to the fixed column is used for with the side butt of knot area.

Through adopting above-mentioned technical scheme, twine the cingulum on the upper chord member, then pass through the through-hole on cingulum suitable position with fixed column and arc piece for one side that the arc piece is close to the fixed column and the side butt in cingulum, because the diameter of arc piece is greater than the diameter of through-hole, make the arc piece be difficult for falling from the through-hole in, realize preventing falling fixed mounting between net and the upper chord member.

Preferably, a second spring is arranged between the arc blocks at two sides of the notch, and the second spring is used for pushing the arc blocks at two sides of the notch to be away from each other.

Through adopting above-mentioned technical scheme, the arc piece of second spring promotion breach both sides keeps away from each other, makes the arc piece of both sides be difficult for coming off in the through-hole, further strengthens the connection stability between cingulum and the upper chord.

Preferably, the winding rod is sleeved with a torsion spring, the torsion spring is used for driving the winding rod to rotate to wind the anti-falling net, one end of the torsion spring is arranged on the fixed block, and the other end of the torsion spring is arranged on the winding rod.

Through adopting above-mentioned technical scheme, drive the rolling pole through the torsional spring and rotate and roll up anti-falling net, help accomodating anti-falling net, convenient transportation.

Preferably, the fixed block is provided with a protective cover, the protective cover is arranged outside the gear and the arc-shaped teeth, one side of the arc-shaped teeth away from the gear is provided with a pull rod, and the pull rod is arranged on the protective cover in a sliding penetrating mode.

Through adopting above-mentioned technical scheme, the setting of protection casing carries out certain protection to gear and arc tooth, helps prolonging the life of gear and arc tooth.

Preferably, the two sides of the buckle belt are provided with anti-slip layers.

Through adopting above-mentioned technical scheme, the setting on anti-skidding layer makes the cingulum of winding on the upper chord be difficult for taking place to slide, effectively guarantees the protection effect of anti-falling net.

In summary, the present application includes the following beneficial technical effects:

the winding rod is rotated to wind or unwind the anti-falling net, the winding rod is relatively fixed with the fixing block through the fixing component, so that the unfolding size of the anti-falling net can be adjusted according to the distance between the two side bailey pieces, and when the distance between the two side bailey pieces is changed, the anti-falling net is not required to be replaced, so that the cost can be saved to a certain extent.

Drawings

Fig. 1 is a schematic overall structure of an embodiment of the present application.

Fig. 2 is a schematic partial structure of an embodiment of the present application.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Fig. 4 is an enlarged view of a portion B in fig. 2.

Reference numerals illustrate: 1. beret sheet; 101. an upper chord; 2. a fixed block; 3. a winding rod; 4. an anti-falling net; 5. a fixing assembly; 51. a gear; 52. arc teeth; 53. a pushing member; 531. a first spring; 6. a buckle belt; 7. fixing the column; 8. an arc-shaped block; 9. a through hole; 10. a notch; 11. a second spring; 12. a torsion spring; 13. a protective cover; 14. a pull rod; 15. a handle; 16. a partition plate; 17. and (5) connecting a rod.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-4.

The embodiment of the application discloses a large-span prestressed girder supporting structure. Referring to fig. 1, 2 and 3, the large-span prestress beam supporting structure comprises a bailey piece 1 on two sides, two fixing blocks 2 and a winding rod 3 which is rotatably arranged between the two fixing blocks 2 in a penetrating mode, the bailey piece 1 is provided with an upper chord member 101, the two fixing blocks 2 are fixedly connected through a connecting rod 17, the rotation axis of the winding rod 3 is parallel to the length direction of the bailey piece 1, the rotation axis of the winding rod 3 is parallel to the length direction of the upper chord member 101, a falling-preventing net 4 is wound on the winding rod 3, a fixing assembly 5 for enabling the winding rod 3 to be relatively fixed with the fixing blocks 2 is arranged on any one side of the fixing blocks 2, and connecting pieces for connecting the upper chord member 101 are arranged on two corners, far away from the winding rod 3, of the two fixing blocks 2 and the falling-preventing net 4.

Referring to fig. 2 and 3, in order to facilitate the relative fixation of the winding rod 3 and the fixed block 2, the fixed assembly 5 includes a gear 51 fixedly sleeved on the winding rod 3, an arc tooth 52 slidably disposed on the fixed block 2, and a pushing member 53 disposed on the fixed block 2, the gear 51 is located at one side of the fixed block 2 away from the anti-falling net 4, the arc tooth 52 slides toward a direction approaching or departing from the gear 51, a sliding direction of the arc tooth 52 is perpendicular to a rotation axis of the winding rod 3, the arc tooth 52 is used for meshing with the gear 51, in other embodiments, a sliding block is fixed on the arc tooth 52, and a sliding groove matched with the sliding block in a sliding manner is formed on the fixed block 2.

Referring to fig. 2 and 3, a protecting cover 13 is fixedly connected to one side of the fixed block 2, which is close to the gear 51, the protecting cover 13 is covered outside the gear 51 and the arc-shaped teeth 52, a pull rod 14 is fixed to one side, which is far away from the gear 51, of the arc-shaped teeth 52, the pull rod 14 is arranged on the protecting cover 13 in a sliding penetrating manner, the sliding direction of the pull rod 14 is parallel to the sliding direction of the arc-shaped teeth 52, and sliding fit between the pull rod 14 and the protecting cover 13 is beneficial to guiding sliding of the arc-shaped teeth 52; the pushing piece 53 is used for pushing the arc tooth 52 to slide towards the direction close to the gear 51, the pushing piece 53 comprises a first spring 531 for pushing the arc tooth 52 to slide towards the direction close to the gear 51, the first spring 531 is movably sleeved at one end of the pull rod 14 located in the protective cover 13, one end of the first spring 531 is fixedly connected to one side, far away from the gear 51, of the arc tooth 52, the other end of the first spring 531 is fixedly connected to the inner wall of the protective cover 13, and the protective cover 13 is beneficial to protecting the gear 51 and the arc tooth 52, so that the service life of the protective cover is prolonged. One end of the pull rod 14, which is positioned outside the protective cover 13, is fixed with a handle 15, which provides convenience for a worker to pull the pull rod 14.

When the size of the expanded anti-falling net 4 needs to be adjusted, the pull handle 15 slides towards the direction away from the protective cover 13, the pull rod 14 drives the arc teeth 52 to separate from the gear 51, the first spring 531 is compressed, the winding rod 3 can be rotated to wind or unwind the anti-falling net 4, the anti-falling net 4 is adjusted to a proper size according to the distance between the bailey pieces 1 on two sides, then the handle 15 is loosened, the compressed first spring 531 pushes the arc teeth 52 to slide towards the direction close to the gear 51, the arc teeth 52 are meshed with the gear 51, the rotation of the gear 51 and the winding rod 3 is limited, the stability of the anti-falling net 4 in the use process is guaranteed, two fixing blocks 2 and two corners of the anti-falling net 4 away from the winding rod 3 are connected to the upper chord members 101 of the bailey pieces 1 on two sides through connecting pieces, the installation of the anti-falling net 4 is completed, the anti-falling net 4 does not need to be replaced each time, and cost is saved to a certain extent.

Referring to fig. 2 and 3, for the installation of being convenient for prevent falling net 4 is fixed, the connecting piece is including two fixed blocks 2 and prevent falling net 4 and keep away from the cingulum 6 on two angles of rolling pole 3 respectively, cingulum 6 is the rubber tape, cingulum 6 is used for around establishing on upper chord 101, cingulum 6 is close to prevent falling net 4's one end fixedly connected with fixed column 7, fixed column 7 is the elastic steel column, fixed column 7's length direction perpendicular to is located cingulum 6 surface, fixed column 7 is located cingulum 6 and is close to one side of upper chord 101, fixed column 7 is kept away from cingulum 6's one end fixedly connected with arc piece 8, arc piece 8 is the hemisphere piece, arc piece 8 is towards keeping away from the direction evagination of fixed column 7, cingulum 6 is kept away from preventing falling net 4's one end and has been seted up a plurality of through-holes 9 that are used for arc piece 8 and fixed column 7 to pass, a plurality of through-holes 9 are arranged in proper order along the length direction of cingulum 6, the diameter of arc piece 8 is greater than the diameter of through-hole 9, arc piece 8 and fixed column 7 are equipped with central line 10 along on arc piece 8 and the fixed column 7, one side that is close to arc piece 8 and fixed column 7, arc piece 10 and arc piece 7 are used for being used for the arc piece 7 to be close to arc piece 7. In other embodiments, the connecting piece can be replaced by connecting ropes arranged at two corners of the fixing block 2 and the anti-falling net 4 far away from the winding rod 3, the connecting ropes are tied on the upper chord 101, and the installation and fixation between the anti-falling net 4 and the upper chord 101 can be realized.

Referring to fig. 2 and 3, a second spring 11 is fixed between the arc blocks 8 at two sides of the notch 10, the extending direction of the second spring 11 is perpendicular to the length direction of the fixing column 7, the second spring 11 is used for pushing the arc blocks 8 at two sides of the notch 10 to be away from each other, one end of the second spring 11 is fixed on the arc block 8 at one side of the notch 10, and the other end is fixed on the arc block 8 at the other side of the notch 10.

When the anti-falling net 4 needs to be installed, the buckling belt 6 is wound on the upper chord member 101 at the proper position, the fixing column 7 and the arc-shaped block 8 are forced to penetrate through the through hole 9 at the proper position on the buckling belt 6, then the arc-shaped block 8 is loosened, one side, close to the fixing column 7, of the arc-shaped block 8 is abutted to the side face of the buckling belt 6, at the moment, the arc-shaped blocks 8 on two sides of the notch 10 are pushed to be far away from each other by the second spring 11, the distance from the center of the fixing column 7 to the edge of the arc-shaped block 8 is increased, so that the arc-shaped block 8 is not easy to fall off from the through hole 9, and the installation stability of the anti-falling net 4 is ensured. When the anti-falling net 4 needs to be taken down from the upper chord 101, the arc blocks 8 on two sides of the notch 10 are extruded towards the directions approaching each other, so that the arc blocks 8 on two sides are close, and then the arc blocks 8 are pushed to slide towards the directions approaching the fixed column 7, so that the arc blocks 8 can slide out from the through holes 9, and then the buckle belt 6 is taken down from the upper chord 101, so that the anti-falling net 4 is detached.

Referring to fig. 3 and 4, a torsion spring 12 is sleeved on one end of the winding rod 3 far away from the gear 51, a partition plate 16 is fixedly sleeved on the winding rod 3, the partition plate 16 is located on one side of the torsion spring 12 close to the gear 51, the torsion spring 12 is used for driving the winding rod 3 to rotate to wind the anti-falling net 4, one end of the torsion spring 12 is fixedly connected to the side wall of the fixed block 2, and the other end of the torsion spring 12 is fixedly connected to one side of the partition plate 16 close to the torsion spring 12.

After the anti-falling net 4 is taken down from the upper chord member 101, the handle 15 is pulled towards the direction away from the protective cover 13, so that the pull rod 14 drives the arc-shaped teeth 52 to be separated from the gear 51, and the winding rod 3 is driven to rotate through the torsion spring 12 to wind the anti-falling net 4, thereby realizing the storage of the anti-falling net 4 and facilitating the transportation of the anti-falling net 4.

Referring to fig. 2 and 3, anti-slip layers (not shown) are adhered to both sides of strap 6, and in this embodiment, the anti-slip layers are frosted layers, which help to enhance friction between strap 6 and upper chord 101, so that strap 6 is not prone to unnecessary sliding on upper chord 101.

The implementation principle of the embodiment of the application is as follows: when the bailey pieces 1 on two sides are installed and the anti-falling net 4 is required to be installed, the handle 15 is pulled to slide in a direction away from the protective cover 13, so that the pull rod 14 drives the arc-shaped teeth 52 to be separated from the gear 51, the winding rod 3 is rotated to unwind the anti-falling net 4, the anti-falling net 4 is adjusted to a proper expansion size according to the distance between the bailey pieces 1 on two sides, then the handle 15 is loosened, the compressed first spring 531 pushes the arc-shaped teeth 52 to slide in a direction close to the gear 51, the arc-shaped teeth 52 are meshed with the gear 51, and the arc-shaped teeth 52 limit the rotation of the gear 51 and the winding rod 3; then, the two fixing blocks 2 and the anti-falling net 4 are far away from the buckling belts 6 at two corners of the winding rod 3 and are wound on the proper positions of the upper chord members 101, the fixing columns 7 and the arc blocks 8 are forced to penetrate through the through holes 9 at the proper positions of the corresponding buckling belts 6, then the arc blocks 8 are loosened, one surface of each arc block 8, which is close to the fixing column 7, is abutted against the side surfaces of the buckling belts 6, the arc blocks 8 at two sides of the notch 10 are pushed to be far away from each other by the second springs 11, so that the arc blocks 8 are not easy to fall from the through holes 9, the anti-falling net 4 is installed, and by adopting the anti-falling net 4, the anti-falling net 4 with different sizes is not required to be replaced each time when the width of the prestress beam is changed, so that the cost is saved to a certain extent.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides a large-span prestressing force roof beam bearing structure, includes bailey pieces (1) of both sides, have upper portion chord member (101), its characterized in that on bailey pieces (1): still include two fixed blocks (2) and rotate the rolling pole (3) that sets up between two fixed blocks (2), two fixed block (2) are connected through connecting rod (17), the axis of rotation of rolling pole (3) is on a parallel with the length direction of bailey piece (1), around being equipped with on rolling pole (3) and prevent weighing down net (4), arbitrary be provided with on fixed block (2) and be used for making rolling pole (3) and fixed block (2) relatively fixed subassembly (5), both sides all be provided with the connecting piece that is used for connecting upper portion chord member (101) on two angles that rolling pole (3) were kept away from to fixed block (2) and prevent weighing down net (4).

2. A long span prestressed girder supporting structure as claimed in claim 1, wherein: the fixing assembly (5) comprises a gear (51) sleeved on the winding rod (3), arc teeth (52) arranged on the fixing block (2) in a sliding mode and a pushing piece (53) arranged on the fixing block (2), the arc teeth (52) slide towards a direction close to or far away from the gear (51), the arc teeth (52) are used for being meshed with the gear (51), and the pushing piece (53) is used for pushing the arc teeth (52) to slide towards a direction close to the gear (51).

3. A long span prestressed girder supporting structure as claimed in claim 2, wherein: the pushing piece (53) comprises a first spring (531) used for pushing the arc-shaped teeth (52) to slide towards the direction close to the gear (51), one end of the first spring (531) is arranged on the arc-shaped teeth (52), and the other end of the first spring is arranged on the fixed block (2).

4. A long span prestressed girder supporting structure as claimed in claim 1, wherein: the utility model provides a connecting piece, including setting up respectively and keeping away from knot area (6) on two angles and fixed block (2) of rolling pole (3) of preventing dropping net (4), knot area (6) are used for around establishing on upper portion chord member (101), the one end that is close to preventing dropping net (4) of knot area (6) is provided with fixed column (7), the one end that detains area (6) is kept away from to fixed column (7) is provided with arc piece (8), the direction evagination that fixed column (7) was kept away from to arc piece (8), a plurality of through-holes (9) that are used for supplying arc piece (8) and fixed column (7) to pass have been seted up to the one end that detained area (6) kept away from dropping net (4), the diameter of arc piece (8) is greater than the diameter of through-hole (9), notch (10) have been seted up along the central line on arc piece (8) and fixed column (7), arc piece (8) are close to one side butt that is used for of buckling area (6) with fixed column (7) to span arc piece (8).

5. A long span prestressed girder supporting structure as claimed in claim 4, wherein: a second spring (11) is arranged between the arc-shaped blocks (8) on two sides of the notch (10), and the second spring (11) is used for pushing the arc-shaped blocks (8) on two sides of the notch (10) to be far away from each other.

6. A long span prestressed girder supporting structure as claimed in claim 1, wherein: the winding rod (3) is sleeved with a torsion spring (12), the torsion spring (12) is used for driving the winding rod (3) to rotate to wind the anti-falling net (4), one end of the torsion spring (12) is arranged on the fixed block (2), and the other end of the torsion spring is arranged on the winding rod (3).

7. A long span prestressed girder supporting structure as claimed in claim 2, wherein: be provided with protection casing (13) on fixed block (2), protection casing (13) cover is established outside gear (51) and arc tooth (52), one side that gear (51) were kept away from to arc tooth (52) is provided with pull rod (14), pull rod (14) slip wears to establish on protection casing (13).

8. A long span prestressed girder supporting structure as claimed in claim 4, wherein: both sides of the buckle belt (6) are provided with anti-slip layers.