A suspended combined construction scaffold

Abstract

The present invention relates to a suspended combined construction scaffold, comprising a distribution beam and a hanger, wherein the distribution beam is used to connect to the upper chord of a bridge, and the hanger is suspended on the outside of the upper chord through the distribution beam, and a movable lifting lug is provided on the distribution beam for sliding, and the movable lifting lug is connected to the hanger, and the hanger can move closer to or farther from the upper chord by sliding the movable lifting lug, and a limiting component is detachably connected to the distribution beam, and the limiting component is used to fix the movable lifting lug. In the present invention, the distribution beam and the hanger are prefabricated, and the movable lifting lug and the distribution beam are preassembled. The distribution beam is sequentially hoisted to connect to the upper chord, and the hanger is connected to the distribution beam by hoisting equipment, and the hanger is moved closer to or farther from the upper chord by the movable lifting lug, so that different construction can be carried out at different workstations; when the construction of one section is completed, the distribution beam and the hanger can be transported to the next section by the hoisting equipment, and this cycle is highly efficient.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, in particular to a suspended combined construction scaffold. Background Art

[0002] After a rigid-frame arch bridge is closed, the arch ribs must be encased in concrete to form the primary load-bearing components. The greatest challenges with encasing large spans with concrete are uneven loading, which can lead to structural instability or concrete cracking, and the difficulty of performing overhead work. Unbalanced concrete loading can typically be addressed using a ring-by-ring, segmented approach. Initially, a ring of concrete is constructed, which, together with the ribs, forms a new load-bearing structure, providing support for subsequent construction. This is typically cast in three rings: the base plate, web, and top plate.

[0003] To achieve the high-altitude pouring of concrete for each ring, a separate construction platform is required for each ring. Outsourced concrete construction presents challenges such as limited space within the rigid frame box, obstruction by internal partitions, a tilted work surface, and the dangers of working at height. The safety platform design must meet the requirements of safety, reliability, ease of operation, and ease of transport. Traditional construction platforms utilize full-height scaffolding, which consumes a lot of materials and is costly. Furthermore, due to the limitations of mountainous terrain, scaffolding erection is difficult and the construction schedule cannot be guaranteed. Summary of the Invention

[0004] The purpose of the present invention is to provide a suspended combined construction scaffold to solve the problems existing in the prior art.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A suspended combined construction scaffold comprises a distribution beam and a hanger, wherein the distribution beam is used to be connected to the upper chord of a bridge, and the hanger is suspended on the outside of the upper chord through the distribution beam. A movable lifting lug is slidingly provided on the distribution beam, and the movable lifting lug is connected to the hanger. The hanger can approach or move away from the upper chord by sliding the movable lifting lug. A limiting component is detachably connected to the distribution beam, and the limiting component is used to fix the movable lifting lug.

[0007] The invention discloses a suspended combined construction scaffold, wherein the distribution beam and the hanger are prefabricated, and the movable lifting lug and the distribution beam are preassembled. The distribution beam is sequentially lifted and connected to the upper chord, and the hanger is connected to the distribution beam by a lifting device. The hanger is brought close to the upper chord by the movable lifting lug, and workers can tie web or top plate steel bars on the hanger. After completion, the hanger is moved away from the upper chord by the movable lifting lug to leave a sufficient distance, and workers can install the web or top plate formwork on the hanger, and subsequently cast the web or top plate. When the construction of one section is completed, the distribution beam and the hanger can be transported to the next section by the lifting device, and the cycle is efficient. The invention solves the problem that the traditional construction platform adopts a full-floor bracket for construction, which consumes a lot of materials, has high cost, and has high safety risks. In addition, it is difficult to set up the bracket due to the limitations of mountainous terrain, and the construction period cannot be guaranteed.

[0008] As a preferred technical solution of the present invention, a support is welded to the top of the upper chord, and the distribution beam is detachably connected to the support.

[0009] With this structure, the support is processed and connected as one piece when the upper chord is processed, and the distribution beam can be quickly connected and matched with the support when it is hoisted by the hoisting equipment.

[0010] As an optimal technical solution of the present invention, the distribution beam includes a vertical rod, a horizontal rod and a diagonal rod. The vertical rod is connected to the top of the upper chord rod, one end of the horizontal rod is connected to the vertical rod and cantilevered on the outside of the upper chord rod, and the two ends of the diagonal rod are respectively connected to the vertical rod and the horizontal rod to form a stable triangular truss structure.

[0011] As a further preferred technical solution of the present invention, stiffening ribs are provided at the connection between the vertical rod and the horizontal rod to enhance the stability of the cantilevered horizontal rod.

[0012] As a further preferred technical solution of the present invention, the movable lifting ear is slidably connected to the cross bar, the limiting component includes a limiting hole and a corresponding limiting screw, and several groups of the limiting holes are provided on the cross bar. The spacing between each group of the limiting holes matches the width of the sliding part of the movable lifting ear, and the limiting holes can be connected to the limiting screw to fix the position of the movable lifting ear.

[0013] By adopting this structure, the limiting holes are set in advance on the cross bar according to the later working position of the hanger. After the position of the hanger is changed by the lifting equipment and the movable lifting ear slides into place, the limiting screws are connected in the limiting holes on both sides of the movable lifting ear to limit the sliding of the movable lifting ear, ensuring that the distance between the hanger and the upper chord remains unchanged when in use.

[0014] As a further preferred technical solution of the present invention, the limiting component includes a clamping hoop. After the movable lifting ear slides into place, the clamping hoop can be detachably connected to the two sides of the corresponding cross bar to fix the position of the movable lifting ear on the cross bar.

[0015] With this structure, when the hanger needs to be moved to a different work station position, the hanger is lifted by the lifting equipment. When the hanger moves to the work station, the sliding of the movable lifting ear is limited by arranging the clamps on both sides of the movable lifting ear, ensuring that the distance between the hanger and the upper chord remains unchanged when in use.

[0016] As a further preferred technical solution of the present invention, the movable lifting ear includes a sleeve, the sleeve is slidably sleeved on the cross bar, the bottom of the sleeve is connected to a hanging plate, the hanging plate is provided with a hanging hole, and the hanger is hinged to the hanging hole.

[0017] As a preferred technical solution of the present invention, a pair of the upper chords are respectively provided with a plurality of pairs of distribution beams, and each pair of the distribution beams is connected by a connecting beam.

[0018] With this result, the connecting beam forms a tension rod connecting a pair of the distribution beams, balancing the tension of the hanger on the distribution beams.

[0019] As a further preferred technical solution of the present invention, a pin ear is provided on the top of the vertical rod, and the connecting beam is connected to the vertical rod through the pin ear.

[0020] As an optimal technical solution of the present invention, the hanger includes several columns and several transverse frames, the transverse frames are arranged in layers and connected through the columns, the hanger is provided with several diagonal rods and side nets on the side away from the upper chord, the diagonal rods connect the connection points of the columns and the transverse frames, the side nets cover the entire side of the hanger and connect the columns, the transverse frames and the diagonal rods, a springboard is connected to the transverse frames, and a hanging ear is provided on the top of the hanger, and the hanging ear is hinged to the movable hanging ear.

[0021] As a further preferred technical solution of the present invention, the horizontal frames of all layers are connected by ladders, and a manhole is provided on the horizontal frame of the middle layer, and the ladder passes through the manhole.

[0022] As a further preferred technical solution of the present invention, at least one movable node is slidably connected to the column on the side of the hanger, and the corresponding movable nodes on two adjacent hangers are connected by bolts.

[0023] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0024] The present invention relates to a suspended combined construction scaffold, wherein the distribution beam and the hanger are prefabricated, and the movable lifting lug and the distribution beam are preassembled. The distribution beam is sequentially lifted and connected to the upper chord, and the hanger is connected to the distribution beam by a lifting device. The hanger is brought close to the upper chord by the movable lifting lug, and workers can tie web or top plate steel bars on the hanger. After completion, the hanger is moved away from the upper chord by the movable lifting lug to leave a sufficient distance, and workers can install the web or top plate formwork on the hanger, as well as cast the web or top plate subsequently. When the construction of one section is completed, the distribution beam and the hanger can be transported to the next section by the lifting device, and the cycle is efficient. The scaffold solves the problem that traditional construction platforms use full-floor brackets for construction, which consume a lot of materials, have high costs, and have high safety risks. In addition, due to the limitations of mountainous terrain, bracket erection is difficult and the construction period cannot be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the suspended modular construction scaffold;

[0026] Figure 2 This is a schematic diagram of the distribution beam installation;

[0027] Figure 3 This is a schematic diagram of the distribution beam structure;

[0028] Figure 4 for Figure 3 A magnified schematic diagram of part A in the middle;

[0029] Figure 5 This is a schematic diagram of the connection beam installation;

[0030] Figure 6 This is a diagram of the hanger installation;

[0031] Figure 7 This is a schematic diagram of using a hanger to tie web reinforcement;

[0032] Figure 8 This is a schematic diagram of using a hanger for web formwork installation;

[0033] Figure 9 This is a side view of the hanger;

[0034] Figure 10 for Figure 9 Middle BB cross-section;

[0035] Figure 11 for Figure 9 Middle CC section view;

[0036] Figure 12 for Figure 9 Middle DD section view;

[0037] Figure 13 for Figure 9 Middle EE cross-sectional view;

[0038] Figure 14 for Figure 9 Middle FF cross-sectional view.

[0039] Markings in the figure: 01-upper chord, 02-lifting equipment, 1-support, 2-distribution beam, 21-vertical rod, 22-cross rod, 23-diagonal rod, 24-pin ear, 25-stiffening rib, 26-limiting hole, 27-limiting screw, 3-connecting beam, 4-hanger, 41-hanging ear, 42-movable node, 43-column, 44-cross frame, 45-diagonal rod, 46-side net, 47-ladder, 48-manhole, 49-springboard, 5-movable lifting ear, 51-sleeve, 52-hanging plate, 53-hanging hole, 6-web or top plate reinforcement, 7-web or top plate formwork. DETAILED DESCRIPTION

[0040] The present invention will be described in detail below with reference to the accompanying drawings.

[0041] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0042] Example 1

[0043] like Figures 1 to 14 As shown, the suspended combined construction scaffold of the present invention includes a distribution beam 2, a connecting beam 3, a hanger 4 and a movable lifting lug 5.

[0044] like Figure 1 and Figure 2 As shown, a support 1 is welded on the top of the upper chord 01 of the bridge. The support 1 is a steel pipe. The support 1 is processed and connected as a whole when the upper chord 01 is processed. The distribution beam 2 is lifted by the lifting equipment 02. The distribution beam 2 is detachably connected to the support 1 and can be quickly connected and coordinated with the support 1; the two upper chords 01 are respectively connected to several distribution beams 2, and are symmetrically arranged. The distribution beam 2 is cantilevered on the outside of the upper chord 01.

[0045] Specifically, if Figure 3As shown, the distribution beam 2 includes a vertical bar 21, a horizontal bar 22 and an oblique bar 23, and the vertical bar 21, the horizontal bar 22 and the oblique bar 23 are all made of steel pipes; the vertical bar 21 is plugged into the support 1 and locked by bolts, and the bolts pass through the wall of the support 1 and the wall of the vertical bar 21 in turn; one end of the horizontal bar 22 is welded to the rod body of the vertical bar 21 and cantilevered to the outside of the upper chord 01, and the two ends of the oblique bar 23 are respectively welded to the vertical bar 21 and the horizontal bar 22 to form a stable triangular truss structure; the connection between the vertical bar 21 and the horizontal bar 22 is provided with a stiffening rib 25, and the stiffening rib 25 is respectively welded to the vertical bar 21 and the horizontal bar 22 to enhance the stability of the cantilevered horizontal bar 22; a pin ear 24 is provided at the top of the vertical bar 21; the distribution beam 2 is prefabricated in the factory and is directly hoisted and installed on site by the hoisting equipment 02.

[0046] like Figure 3 and Figure 4 As shown, the movable lifting ear 5 includes a sleeve 51, which is slidably sleeved on the cross bar 22, and a hanging plate 52 is connected to the bottom of the sleeve 51. The sleeve 51 and the hanging plate 52 are both steel structures, and the hanging plate 52 is welded to the sleeve 51. A lifting hole 53 is provided on the hanging plate 52; the movable lifting ear 5 is prefabricated in the factory and directly connected to the cross bar 22, and is lifted on site together with the distribution beam 2.

[0047] like Figure 5 As shown, the connecting beam 3 is lifted to the middle of a pair of symmetrically arranged distribution beams 2 by the lifting equipment 02, and the connecting beam 3 is connected to the vertical rod 21 through the pin ear 24, and the connecting beam 3 and the pin ear 24 are fixed by bolts; with this result, the connecting beam 3 forms a tension rod connecting a pair of distribution beams 2, balancing the subsequent tension of the hanger 4 on the distribution beam 2.

[0048] like Figure 6 As shown, the hanger 4 is lifted to below the movable lifting lug 5 of the distribution beam 2 by the lifting equipment 02 , the hanger 4 is connected to the movable lifting lug 5 , and the hanger 4 is suspended on the outside of the upper chord 01 through the distribution beam 2 .

[0049] Specifically, if Figures 9 to 14As shown, the hanger 4 includes several columns 43 and several transverse frames 44, the transverse frames 44 are arranged in layers and connected by the columns 43, the hanger 4 is provided with several diagonal rods 45 and side nets 46 on the side away from the upper chord 01, the diagonal rods 45 connect the connection points of the columns 43 and the transverse frames 44, the side nets 46 cover the entire side of the hanger 4 and connect the columns 43, the transverse frames 44 and the diagonal rods 45, a springboard 49 is connected to the transverse frame 44, and the top of the hanger 4 is provided with The hanging ear 41 is hinged to the hanging hole 53 by a bolt; the horizontal frames 44 of all layers are connected by a ladder 47, and the horizontal frame 44 of the middle layer is provided with a manhole 48, and the ladder 47 passes through the manhole 48; wherein, the column 43, the horizontal frame 44, the inclined rod 45, the ladder 47 and the springboard 49 are all steel structures, the column 43, the horizontal frame 44, the inclined rod 45 are detachably connected by a node joint, and the side net 46 is a wire mesh or a nylon rope net.

[0050] The hanger 4 is prefabricated in the factory and is directly hoisted and installed on site by the hoisting equipment 02. The longitudinal length of a single hanger 4 is 4m, the width of the hanger 4 is 0.8m, and the height can be set according to the height of the arch rib section of the working surface. The spacing between the columns 43 is 2m, and the fully covered springboard 49 serves as a construction platform.

[0051] In a specific embodiment, at least one active node 42 is slidably connected to the column 43 on the side of the hanger 4, and the corresponding active nodes 42 on two adjacent hangers 4 are connected by bolts to connect the two adjacent hangers 4 into a whole; the active node 42 includes a sleeve and an ear plate, the sleeve is slidably connected to the column 43, the ear plate is welded to the sleeve, and screw holes are provided on the ear plate, and the corresponding ear plates on two adjacent hangers 4 are detachably connected by bolts.

[0052] The hanger 4 can move closer to or farther away from the upper chord 01 by sliding the movable lifting lug 5 , and a limiting component is detachably connected to the cross bar 22 , and the limiting component is used to fix the movable lifting lug 5 .

[0053] In a specific embodiment, the limiting component includes a limiting hole 26 and a corresponding limiting screw 27. Several groups of the limiting holes 26 are provided on the cross bar 22. The spacing between each group of the limiting holes 26 matches the width of the sliding part of the movable lifting ear 5. The limiting holes 26 can be connected to the limiting screw 27 to fix the position of the movable lifting ear 5. With this structure, the limiting holes 26 are set in advance on the cross bar 22 according to the later working position of the hanger 4. After the position of the hanger 4 is changed by the lifting equipment 02 and the movable lifting ear 5 slides into place, the sliding of the movable lifting ear 5 is limited by connecting the limiting screws 27 in the limiting holes 26 on both sides of the movable lifting ear 5 to ensure that the distance between the hanger 4 and the upper chord 01 remains unchanged during use.

[0054] In a specific embodiment, the limiting component includes a clamp, and after the movable lifting ear 5 slides into place, the clamp can be detachably connected to the two sides of the corresponding cross bar 22 to fix the position of the movable lifting ear 5 on the cross bar 22; using this structure, when the hanger 4 needs to be changed at different workstation positions, the hanger 4 is lifted by the lifting equipment 02, and when the hanger 4 moves to the workstation, the sliding of the movable lifting ear 5 is limited by arranging the clamp on both sides of the movable lifting ear 5, ensuring that the distance between the hanger 4 and the upper chord 01 remains unchanged during use.

[0055] The above two limiting component structures are both as follows Figure 2 Before the distribution beam 2 is installed, the movable lug 5 is fixed at the first station. Figure 6 After the hanger 4 is hoisted, installed and connected to the movable lifting lug 5 , the hanger 4 can be directly located at the first work station, which is close to the upper chord 01 .

[0056] like Figure 7 As shown, when the hanger 4 is located at the first work station, workers can tie the web or top plate steel bars 6 on the hanger 4 .

[0057] like Figure 8As shown, after the binding of the web or top plate reinforcement 6 is completed, the restriction of the limiting component on the movable lifting ear 5 is released, and the hanger 4 is lifted away from the upper chord 01 by the lifting equipment 02, and the movable lifting ear 5 slides accordingly, and the movable lifting ear 5 enters the second work station, and then the position of the movable lifting ear 5 is fixed by the limiting component. The hanger 4 is located at the second work station. At this time, there is enough space between the hanger 4 and the web or top plate reinforcement 6 to meet the overall lifting of the web or top plate formwork 7, reduce the formwork assembly time, and improve the efficiency of outsourced concrete construction. Workers can install the web or top plate formwork 7 on the hanger 4, as well as the subsequent pouring of the web or top plate.

[0058] Of course, the first and second workstations mentioned above are only examples. The distribution beam 2 has multiple workstations not limited to the first and second workstations, corresponding to various spacings between the hanger 4 and the upper chord 01.

[0059] After the construction of the current segment is completed, the distribution beam 2 and the hanger 4 can be transported to the next segment through the lifting equipment 02 to continue construction, and this cycle can be used to complete the construction of all segment working surfaces; for example, three hangers 4 are used as a group, and construction is carried out from the arch seat to the span. After the construction of the hanger 4 on the side close to the arch seat in a group is completed, it is transported to the side of the span through the lifting equipment 02 to continue forming a group. The disassembly and assembly of the hanger 4 in a group is controlled by the active node 42.

[0060] The embodiment of the present invention describes a suspended combined construction scaffolding, in which the distribution beam 2 and the hanger 4 are prefabricated, and the movable lifting lug 5 and the distribution beam 2 are pre-assembled. The distribution beam 2 is sequentially lifted and connected to the upper chord 01, and the hanger 4 is connected to the distribution beam 2 by the lifting equipment 02. The movable lifting lug 5 is used to make the hanger 4 close to the upper chord 01, and workers can tie the web or top plate steel bars 6 on the hanger 4. After completion, the movable lifting lug 5 is used to make the hanger 4 leave a sufficient distance away from the upper chord 01, and workers can install the web or top plate formwork 7 on the hanger 4, and subsequently cast the web or top plate. When the construction of one section is completed, the distribution beam 2 and the hanger 4 can be transported to the next section by the lifting equipment 02, and the cycle is efficient. The problem that the traditional construction platform adopts a full-floor bracket for construction, which consumes a lot of materials, has high costs, and has high safety risks, is restricted by mountainous terrain, is difficult to set up the bracket, and the construction period cannot be guaranteed is solved.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A suspended combined construction scaffold, characterized in that: The invention comprises a distribution beam (2) and a hanger (4), wherein the distribution beam (2) is used to be connected to the upper chord (01) of the bridge, and the hanger (4) is suspended on the outside of the upper chord (01) through the distribution beam (2); a movable lug (5) is slidingly provided on the distribution beam (2), and the movable lug (5) is connected to the hanger (4); the hanger (4) can approach or move away from the upper chord (01) by sliding the movable lug (5); a limiting component is detachably connected to the distribution beam (2), and the limiting component is used to fix the movable lug (5); A support (1) is welded to the top of the upper chord (01); the distribution beam (2) is detachably connected to the support (1); the distribution beam (2) comprises a vertical rod (21), a horizontal rod (22) and an oblique rod (23); the vertical rod (21) is connected to the top of the upper chord (01); one end of the horizontal rod (22) is connected to the vertical rod (21) and is cantilevered outside the upper chord (01); the two ends of the oblique rod (23) are respectively connected to the vertical rod (21) and the horizontal rod (22); and the movable lifting lug (5) is slidably connected to the horizontal rod (22).

2. The suspended combined construction scaffold according to claim 1, characterized in that: The limiting component includes a limiting hole (26) and a corresponding limiting screw (27). The cross bar (22) is provided with a plurality of groups of the limiting holes (26). The spacing between each group of the limiting holes (26) matches the width of the sliding part of the movable lifting ear (5). The limiting holes (26) can be connected to the limiting screw (27) to fix the position of the movable lifting ear (5).

3. The suspended modular construction scaffold according to claim 1, characterized in that: The limiting component includes a clamping hoop, and after the movable lifting lug (5) slides into position, the clamping hoop is detachably connected to both sides of the corresponding cross bar (22) to fix the position of the movable lifting lug (5) on the cross bar (22).

4. The suspended modular construction scaffold according to claim 1, characterized in that: The movable lifting lug (5) comprises a sleeve (51), the sleeve (51) is slidably sleeved on the cross bar (22), a hanging plate (52) is connected to the bottom of the sleeve (51), a hanging hole (53) is provided on the hanging plate (52), and the hanger (4) is hinged to the hanging hole (53).

5. The suspended modular construction scaffold according to claim 1, characterized in that: A pair of the upper chords (01) are respectively provided with a plurality of pairs of distribution beams (2), and each pair of the distribution beams (2) is connected by a connecting beam (3).

6. The suspended modular construction scaffold according to any one of claims 1 to 5, characterized in that: The hanger (4) includes a plurality of columns (43) and a plurality of transverse frames (44), the transverse frames (44) are arranged in layers and connected through the columns (43), the hanger (4) is provided with a plurality of diagonal rods (45) and side nets (46) on the side away from the upper chord (01), the diagonal rods (45) are connected to the connection points of the columns (43) and the transverse frames (44), the side nets (46) cover the entire side of the hanger (4) and connect the columns (43), the transverse frames (44) and the diagonal rods (45), a springboard (49) is connected to the transverse frames (44), and a hanging ear (41) is provided on the top of the hanger (4), and the hanging ear (41) is hinged to the movable hanging ear (5).

7. The suspended modular construction scaffold according to claim 6, characterized in that: The transverse frames (44) of all layers are connected through ladders (47), and a manhole (48) is provided on the transverse frame (44) of the middle layer, and the ladder (47) passes through the manhole (48).

8. The suspended modular construction scaffold according to claim 6, characterized in that: At least one movable node (42) is slidably connected to the column (43) on the side of the hanger (4), and the corresponding movable nodes (42) on two adjacent hangers (4) are connected by bolts.

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