Split mounting type extensible structure bridge

Abstract

The invention discloses an assembly type deployable structure bridge, and belongs to the field of assembly type bridge equipment, the assembly type deployable structure bridge comprises deployable truss pieces, bridge end foundation plates, bridge deck slabs, transverse couplings and connecting cross beams, the transverse couplings are connected with the two deployable truss pieces, the deployable truss pieces form a space truss structure through the transverse couplings, the bridge deck slabs are arranged above the space truss structure, and the connecting cross beams are connected with the bridge end foundation plates. The bridge end foundation plates are arranged at the ends of the deployable truss pieces. The deployable truss pieces, the transverse couplings, the bridge end foundation plates and the bridge deck form single-side ruts, and the connecting cross beams are connected with the transverse couplings through pin shafts, so that the two single-side ruts form the whole rut bridge; the deployable truss pieces are of triangular series hinged structures, and the centers of the bottom edges of the triangles rotate to drive the deployable truss pieces to be folded and unfolded. By adopting the foldable hinged truss scheme, the bridge can be completely folded during transportation, the transportation size is small, the transportation load is reduced, and the bridge is long in length and high in obstacle resisting capacity during unfolding.

Description

Technical Field

[0001] The present invention belongs to the field of assembled bridge equipment, and particularly relates to an assembled deployable structure bridge, which is applicable to rapid repair of bridges during wartime or after disasters. Background Art

[0002] Temporary bridge equipment can not only repair and unblock damaged existing bridges, but also erect bridges to open new traffic lines, and is an important equipment for ensuring mobility. Military standard bridge equipment, although it can be erected quickly, requires special erection vehicles, has a high cost, and is not suitable for large-scale war reserve storage. The main war reserve bridge equipment in China mainly includes the "321" assembled highway steel bridge, ZB-200 type assembled highway steel bridge, and ZB-450 type large-span assembled highway steel bridge, but they are all integral truss units, with large self-volumes and inconvenient transportation, especially not suitable for air transportation and being loaded by helicopter suspension, and cannot be quickly put into use in case of emergency.

[0003] The deployable structure has the characteristic of small volume when retracted, and can reduce the transportation volume when used for bridge equipment, including scissor hinge structures and folding hinge structures, etc. At present, the deployable bridges mainly adopt a combination of scissor hinge structure units. However, when the structure is under large stress, the scissor members bear large bending moments and axial forces, and the force is unreasonable. Summary of the Invention

[0004] Based on the need for rapid repair and unblock of road bridges during wartime or after disasters, the present invention proposes an assembled deployable structure bridge, which has a small volume after retraction and is convenient for transportation, can be airdropped and transported by air, and can be loaded in the gaps between the cabins during cross-sea transportation, reducing the transportation capacity burden. After deployment, the bridge has a long length and strong obstacle-crossing ability, providing a new technical means for rapid bridge repair.

[0005] The technical solution for achieving the purpose of the present invention is as follows:

[0006] An assembled deployable structure bridge, comprising deployable truss sheets, bridge end base plates, bridge decks, cross braces, and connecting cross beams. The cross braces connect two of the deployable truss sheets. The deployable truss sheets form a space truss structure through the cross braces. The bridge deck is arranged above the space truss structure, and the bridge end base plates are arranged at the ends of the deployable truss sheets. The deployable truss sheets, cross braces, bridge end base plates, and bridge decks form a single-sided rut. The connecting cross beams connect the cross braces through pin shafts to form an integral rut bridge from two single-sided ruts. The deployable truss sheet is a triangular series-connected articulated structure, including a lower chord, diagonal members, two-hole plates, and four-hole plates. Connecting holes are provided at both ends of the lower chord and the diagonal members. The two ends of the lower chord are butted against each other. Two diagonal members of the same specification are the hypotenuses. The hypotenuse and the base formed by the two lower chords form a triangular articulated shape through the two-hole plates or four-hole plates. The diagonal members cross each other to the center of the base of the adjacent triangle. The base of the adjacent triangle shares one lower chord, and the inner surfaces of the crossed diagonal members face each other. The rotation of the center of the triangle base drives the folding and unfolding of the deployable truss sheet.

[0007] The diagonal members include diagonal member A, diagonal member B, diagonal member C, and diagonal member D. One end of two of the diagonal members B is articulated through a two-hole plate, and the other ends are respectively articulated with the connecting holes at both ends of two adjacent lower chords at the end to form triangle A. One end of two of the diagonal members C is articulated through a two-hole plate, and the other ends are respectively articulated with the connecting holes at both ends of two adjacent lower chords to form triangle B. The bases of triangle A and triangle B share one lower chord. The diagonal members cross each other to the center of the base of the adjacent triangle, that is, diagonal member C crosses to the center of the base of triangle A, and the adjacent diagonal member B crosses to the center of the base of triangle A. The four-hole plate articulates the four connecting holes at the center of the base of triangle A. One end of two of the diagonal members D is articulated through a two-hole plate, and the other ends are respectively articulated with the connecting holes at both ends of two adjacent lower chords through the two-hole plate to form triangle C. The bases of triangle B and triangle C share one lower chord. The diagonal members cross each other to the center of the base of the adjacent triangle, that is, diagonal member D crosses to the center of the base of triangle B, and the adjacent diagonal member C crosses to the center of the base of triangle C. The four-hole plate articulates the four connecting holes at the center of the base of triangle C. The crossed part of triangle A and triangle B is arranged at both ends of the bridge. The crossing of triangle B and triangle C is arranged in the middle of the bridge, and the quantity is determined according to the length of the bridge. One end of diagonal member A is connected and arranged at the center of the base of triangle A, and the other connecting hole is connected to the bridge end base plate.

[0008] The bridge end base plate includes a slope plate and a transition plate. The slope plate is laid flat on the ground at the erection site. The transition plate is arranged at the connection end between the slope plate and the bridge deck. Connecting holes are respectively provided at the upper and lower ends of the transition plate for connecting with the lower chord and the diagonal member at the end of the deployable truss sheet.

[0009] The cross bracing includes cross bracing A, cross bracing B, and cross bracing C; the cross bracing A is arranged at the center of the base of triangle A, the cross bracing B is arranged at the center of the base of triangle B, and the cross bracing C is arranged at the center of the base of triangle C.

[0010] The cross bracing A includes an upper connecting plate A, a lower connecting plate A, and a support leg A, and the support leg A is arranged between the upper connecting plate A and the lower connecting plate A; both sides of the upper connecting plate A and the lower connecting plate A are open outward. The opening of the upper connecting plate A is connected to the apex angle of triangle A, and the opening of the lower connecting plate A is connected to the center of the base of triangle A. Single ear plates are arranged on the inner sides of the upper connecting plate A and the lower connecting plate A for connection with the connecting cross beam.

[0011] The cross bracing B includes an upper connecting plate B, a lower connecting plate B, and a support leg B, and the support leg B is arranged between the upper connecting plate B and the lower connecting plate B; both sides of the upper connecting plate B and the lower connecting plate B are open outward. The opening of the upper connecting plate B is connected to the apex angle of triangle B, and the opening of the lower connecting plate B is connected to the center of the base of triangle B. Single ear plates are arranged on the inner sides of the upper connecting plate B and the lower connecting plate B for connection with the connecting cross beam.

[0012] The cross bracing C includes an upper connecting plate C, a lower connecting plate C, and a support leg C, and the support leg C is arranged between the upper connecting plate C and the lower connecting plate C; both sides of the upper connecting plate C and the lower connecting plate C are open outward. The opening of the upper connecting plate C is connected to the apex angle of triangle C, and the lower connecting plate C30 is connected to the center of the base of triangle C. Single ear plates are arranged on the inner sides of the upper connecting plate C and the lower connecting plate C for connection with the connecting cross beam.

[0013] The connecting cross beam includes a tie rod and double ear plates. The double ear plates are arranged at both ends of the tie rod and are used for connection with the cross bracing.

[0014] The beneficial effects of the present invention are as follows:

[0015] (1) The present invention adopts a foldable hinge truss scheme, which can be completely folded during transportation, has a small transportation volume, and all load-bearing members are tension and compression rod units, with simple stress, facilitating design, and being particularly suitable for the design of composite material rods.

[0016] (2) The lower chord and diagonal members of the present invention are pre-connected together during transportation and can be directly pulled apart during use, reducing the operation time; the bridge deck serves both as the upper chord of the truss and as the vehicle passage, with an integrated design. The deployable truss bridge is inserted into the card slots on both sides of the cross member to form a space truss structure. After installation, the entire deployable bridge changes from a variable structure to a stable structure without the need for additional locking and fixing, and the operation is simple and convenient; the bridge deck can be used alone to overcome small obstacles such as bullet holes. This bridge equipment is flexible in use and can overcome wide obstacles such as broken bridges and ditches as well as small obstacles such as bullet holes according to requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the assembled deployable structure bridge.

[0018] Figure 2 Schematic diagram of the deployed state of the deployable truss panel.

[0019] Figure 3 Three-dimensional schematic diagram of the semi-folded state of the deployable truss panel.

[0020] Figure 4 Two-dimensional schematic diagram of the semi-folded state of the deployable truss panel.

[0021] Figure 5 Schematic diagram of the fully folded state of the deployable truss panel.

[0022] Figure 6 Schematic diagram of the bridge end base plate structure.

[0023] Figure 7 Schematic diagram of the connection between the cross beam system and a single deployable truss panel.

[0024] Figure 8 Schematic diagram of the connection between cross member A and the connecting cross beam.

[0025] Figure 9 Schematic diagram of the connection between cross member B and the connecting cross beam.

[0026] Figure 10 Schematic diagram of the connection between cross member C and the connecting cross beam.

[0027] Figure 11 Schematic diagram of the connecting cross beam structure.

[0028] In the figure: 1 - deployable truss sheet, 2 - bridge end base plate, 3 - bridge deck, 4 - cross bracing, 5 - connecting cross beam, 6 - lower chord, 7 - diagonal member, 8 - two-hole plate, 9 - four-hole plate, 10 - diagonal member A, 11 - diagonal member B, 12 - diagonal member C, 13 - diagonal member D, 14 - triangle A, 15 - triangle B, 16 - triangle C, 17 - slope plate, 18 - transition plate, 19 - cross bracing A, 20 - cross bracing B, 21 - cross bracing C, 22 - upper connecting plate A, 23 - lower connecting plate A, 24 - leg A, 25 - upper connecting plate B, 26 - lower connecting plate B, 27 - leg B, 28 - upper connecting plate C, 29 - lower connecting plate C, 30 - leg C, 31 - tie rod, 32 - double-ear plate. Specific embodiments

[0029] The present invention will be described in detail below with reference to the accompanying drawings and examples. The listed examples are only used to help understand the present invention and should not be construed as limiting the protection scope of the invention. For those of ordinary skill in the art in the technical field, without departing from the principles and ideas of the present invention, the present invention can also be improved and modified, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0030] As Figure 1 shown, the present invention includes a deployable truss sheet 1, a bridge end base plate 2, a bridge deck 3, a cross bracing 4, and a connecting cross beam 5. The deployable truss sheet 1 is arranged below the bridge deck, the bridge end base plate 2 is arranged at the end of the deployable truss sheet 1, and the cross bracing 4 connects two deployable truss sheets 1; the deployable truss sheet 1, the bridge end base plate 2, the bridge deck 3, and the cross bracing 4 form a single-sided rut, and the connecting cross beam 5 connects the cross bracing 4 through a pin shaft to form an integral rut bridge from two single-sided ruts; the deployable truss sheet 1 is a triangular series articulated structure, including a lower chord 6, a diagonal member 7, a two-hole plate 8, and a four-hole plate 9. Connecting holes are provided at both ends of the lower chord 6 and the diagonal member 7; the two ends of the lower chord 6 are butted, and two diagonal members 7 of the same specification are the hypotenuses. The hypotenuse and the base formed by the two lower chords 6 form a triangular articulated shape through the two-hole plate 8 or the four-hole plate 9. The diagonal members 7 cross each other to the center of the base of the adjacent triangle. The base of the adjacent triangle shares one lower chord 6, and the inner surfaces of the crossed diagonal members 7 are opposite; the rotation of the center of the triangle base drives the folding and unfolding of the deployable truss sheet 1.

[0031] As Figures 2 to 5As shown, the diagonal struts 7 include diagonal strut A10, diagonal strut B11, diagonal strut C12, and diagonal strut D13; one end of 2 diagonal struts B11 is hinged through a two-hole plate 17, and the other ends are respectively hinged to the connection holes at both ends of 2 adjacent lower chord bars at the end to form triangle A14; one end of 2 diagonal struts C12 is hinged through a two-hole plate 8, and the other ends are respectively hinged to the connection holes at both ends of 2 adjacent lower chord bars to form triangle B15. The bottom sides of triangle A14 and triangle B15 share 1 lower chord bar, and the diagonal struts cross to the center of the bottom side of the adjacent triangle, that is, diagonal strut C12 crosses to the center of the bottom side of triangle A14, and the adjacent diagonal strut B11 crosses to the center of the bottom side of triangle A14. The four-hole plate 9 hinges the 4 connection holes at the center of the bottom side of triangle A14; one end of 2 diagonal struts D13 is hinged through a two-hole plate 8, and the other ends are respectively hinged to the connection holes at both ends of 2 adjacent lower chord bars through the two-hole plate 8 to form triangle C16. The bottom sides of triangle B15 and triangle C16 share 1 lower chord bar, and the diagonal struts cross to the center of the bottom side of the adjacent triangle, that is, diagonal strut D13 crosses to the center of the bottom side of triangle B15, and the adjacent diagonal strut C12 crosses to the center of the bottom side of triangle C16. The four-hole plate 9 hinges the 4 connection holes at the center of the bottom side of triangle C16; the crossing part of triangle A14 and triangle B15 is arranged at both ends of the bridge; the crossing of triangle B15 and triangle C16 is arranged in the middle of the bridge, and the quantity is determined according to the length of the bridge; one end of diagonal strut A10 is connected and arranged at the center of the bottom side of triangle A14, and the other connection hole is connected to the bridge end base plate 2.

[0032] As Figure 6 shown, the bridge end base plate 2 includes a slope plate 17 and a transition plate 18. The slope plate 17 is laid flat on the ground at the erection site, and the transition plate 18 is arranged at the connection end of the slope plate 17 and the bridge deck. Connection holes are respectively arranged at the upper and lower ends of the transition plate 18 for connecting with the end diagonal struts and lower chord bars of the deployable truss sheet 1.

[0033] As Figure 7 shown, the cross bracing 4 includes cross bracing A19, cross bracing B20, and cross bracing C21; the cross bracing A19 is arranged on the center of the bottom side of triangle A14, the cross bracing B20 is arranged on the center of the bottom side of triangle B15, and the cross bracing C21 is arranged on the center of the bottom side of triangle C16.

[0034] As Figure 8As shown, the cross-link A19 includes an upper connecting plate A22, a lower connecting plate A23, and a supporting leg A24, and the supporting leg A24 is arranged between the upper connecting plate A22 and the lower connecting plate A23; both sides of the upper connecting plate A22 and the lower connecting plate A23 are opened outward, the opening of the upper connecting plate A22 is connected to the top angle of the triangle A14, and the opening of the lower connecting plate A23 is connected to the center of the bottom side of the triangle A14, and the inner sides of the upper connecting plate A22 and the lower connecting plate A23 are provided with a single ear plate for connection with the connecting beam 5.

[0035] like Figure 9 As shown, the cross-link B20 includes an upper connecting plate B25, a lower connecting plate B26, and a supporting leg B27, and the supporting leg B27 is arranged between the upper connecting plate B25 and the lower connecting plate B26; both sides of the upper connecting plate B25 and the lower connecting plate B26 are opened outward, the opening of the upper connecting plate B25 is connected to the top angle of the triangle B15, and the opening of the lower connecting plate B26 is connected to the center of the bottom side of the triangle B15, and the inner sides of the upper connecting plate B25 and the lower connecting plate B26 are provided with a single ear plate for connection with the connecting beam 5.

[0036] like Figure 10 As shown, the cross-link C21 includes an upper connecting plate C28, a lower connecting plate C29, and a supporting leg C30, and the supporting leg C30 is arranged between the upper connecting plate C28 and the lower connecting plate C29; both sides of the upper connecting plate C28 and the lower connecting plate C29 are opened outward, the opening of the upper connecting plate C28 is connected to the top angle of the triangle C16, and the lower connecting plate C29 is connected to the center of the bottom side of the triangle C16, and the inner sides of the upper connecting plate C28 and the lower connecting plate C29 are provided with a single ear plate for connection with the connecting beam 5.

[0037] like Figure 11 As shown, the connecting cross beam 5 includes a pull rod 31 and a double-ear plate 32. The double-ear plate 32 is arranged at both ends of the pull rod 31, and the double-ear plate 32 is connected to the single-ear plate on the cross link.

[0038] During specific implementation, the lower chord and the diagonal rods are pre-connected together to form an expandable truss piece. During transportation, the expandable truss piece is gathered and folded into a plate shape. During erection and use, the folded expandable truss piece is directly opened along the hinge. The cross-link passes through two fully expanded expandable truss pieces to connect them. The bridge deck is arranged above the two fully expanded expandable truss pieces to form a single-sided rut. The connecting beam connects the cross-link to connect the two single-sided ruts together. The bridge end base plate is connected to the diagonal rods at the end of the expandable truss piece at the bridge head end of the two ruts, and the entire bridge is erected.

Claims

1. An assembled deployable structural bridge, characterized in that: The invention comprises an expandable truss piece (1), a bridge end base plate (2), a bridge deck (3), a cross-link (4), and a connecting crossbeam (5), wherein the cross-link (4) connects two expandable truss pieces (1), and the expandable truss pieces (1) form a spatial truss structure through the cross-link (4), the bridge deck (3) is arranged above the spatial truss structure, and the bridge end base plate (2) is arranged at the end of the expandable truss piece (1); the expandable truss piece (1), the cross-link (4), the bridge end base plate (2), and the bridge deck (3) form a single-side rut, and the connecting crossbeam (5) is connected to the cross-link (4) through a pin shaft so that two single-side ruts form an integral rut bridge; the expandable truss piece (1) The invention is a triangular series hinged structure, comprising a lower chord (6), an oblique rod (7), a two-hole plate (8), and a four-hole plate (9); both ends of the lower chord (6) and the oblique rod (7) are provided with connection holes; the ends of the lower chord (6) are butted against each other; the two oblique rods (7) of the same specification are hypotenuses; the hypotenuses and the bottom edges formed by the two lower chords (6) form a triangular hinged shape through the two-hole plate (8) or the four-hole plate (9); the oblique rods (7) cross each other to the center of the bottom edges of adjacent triangles; the bottom edges of adjacent triangles share one lower chord (6); the inner surfaces of the crossed oblique rods (7) are opposite; the rotation of the center of the bottom edge of the triangle drives the deployable truss sheet (1) to fold and unfold.

2. The assembled deployable structural bridge according to claim 1, characterized in that: The inclined rods (7) include an inclined rod A (10), an inclined rod B (11), an inclined rod C (12), and an inclined rod D (13); one end of the two inclined rods B (11) is hinged through two hole plates (8), and the other end is respectively hinged to the connecting holes at the two ends of two adjacent lower chord rods (6) to form a triangle A (14); one end of the two inclined rods C (12) is hinged through two hole plates (8), and the other end is respectively hinged to the connecting holes at the two ends of two adjacent lower chord rods (6) to form a triangle B ( 15), the bases of the triangles A (14) and B (15) share a lower chord (6), the oblique rods (7) cross to the center of the bases of the adjacent triangles, that is, the oblique rod C (7) crosses to the center of the base of the triangle A (14), the adjacent oblique rod B (11) crosses to the center of the base of the triangle A (14), and the four-hole plate (9) hinges the four connecting holes at the center of the base of the triangle A (14); one end of the two oblique rods D (13) passes through The two hole plates (8) are hinged, and the other ends are respectively hinged to the connection holes at the two ends of two adjacent lower chord rods (6) through the two hole plates (8) to form a triangle C (16). The bases of the triangles B (15) and C (16) share one lower chord rod (6). The oblique rods (7) cross to the center of the bases of the adjacent triangles, that is, the oblique rod D (13) crosses to the center of the base of the triangle B (15), and the adjacent oblique rod C (12) crosses to the center of the base of the triangle C (16). The four hole plates (9) hinge to four connection holes at the center of the base of the triangle C (16); the intersection of the triangle A (14) and the triangle B (15) is arranged at the two ends of the bridge; the intersection of the triangle B (15) and the triangle C (16) is arranged in the middle of the bridge, and the number is determined according to the length of the bridge; one end of the oblique rod A (10) is connected to the center of the base of the triangle A (14), and the other end of the connecting hole is connected to the bridge end base plate (2).

3. The assembled deployable structural bridge according to claim 1, characterized in that: The bridge end base plate (2) comprises a gradient plate (17) and a transition plate (18), wherein the gradient plate (17) is placed flat on the ground at the erection site, and the transition plate (18) is arranged at the connection end between the gradient plate (17) and the bridge deck (3), and the upper and lower ends of the transition plate (18) are respectively provided with connection holes for connecting with the lower chord (6) and the diagonal rod (7) at the end of the expandable truss sheet (1).

4. The assembled deployable structural bridge according to claim 1 and claim 2, characterized in that: The cross-link (4) comprises a cross-link A (19), a cross-link B (20), and a cross-link C (21); the cross-link A (19) is arranged at the center of the base of the triangle A (14), the cross-link B (20) is arranged at the center of the base of the triangle B (15), and the cross-link C (21) is arranged at the center of the base of the triangle C (16).

5. The assembled deployable structural bridge according to claim 4, characterized in that: The cross link A (19) comprises an upper link plate A (22), a lower link plate A (23), and a leg A (24), wherein the leg A (24) is arranged between the upper link plate A (22) and the lower link plate A (23); both sides of the upper link plate A (22) and the lower link plate A (23) are opened outward, the opening of the upper link plate A (22) is connected to the top angle of the triangle A (14), and the opening of the lower link plate A (23) is connected to the center of the bottom side of the triangle A (14); and single ear plates are arranged inside the upper link plate A (22) and the lower link plate A (23) for connection with the connecting cross beam (5).

6. The assembled deployable structural bridge according to claim 4, characterized in that: The cross link B (20) comprises an upper link plate B (25), a lower link plate B (26), and a leg B (27), wherein the leg B (27) is arranged between the upper link plate B (25) and the lower link plate B (26); both sides of the upper link plate B (25) and the lower link plate B (26) are opened outward, the opening of the upper link plate B (25) is connected to the top angle of the triangle B (15), and the opening of the lower link plate B (26) is connected to the center of the bottom side of the triangle B (15); and single ear plates are arranged inside the upper link plate B (25) and the lower link plate B (26) for connection with the connecting cross beam (5).

7. The assembled deployable structural bridge according to claim 4, characterized in that: The cross link C (21) comprises an upper link plate C (28), a lower link plate C (29), and a leg C (30), wherein the leg C (30) is arranged between the upper link plate C (28) and the lower link plate C (29); both sides of the upper link plate C (28) and the lower link plate C (29) are opened outward, the opening of the upper link plate C (28) is connected to the top angle of the triangle C (16), and the lower link plate C (29) is connected to the center of the bottom side of the triangle C (16); and single ear plates are arranged inside the upper link plate C (28) and the lower link plate C (29) for connecting with the connecting cross beam (5).

8. The assembled deployable structural bridge according to claim 1, characterized in that: The connecting crossbeam (5) comprises a pull rod (31) and a double-ear plate (32). The double-ear plate (32) is arranged at both ends of the pull rod (31), and the double-ear plate (32) is used to be connected to the cross link (4).

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