Integral synchronous unloading device for bracket

Abstract

The utility model provides an integral synchronous unloading device for a support, and relates to the technical field of constructional engineering. The device comprises a joist assembly and a suspension assembly, and the joist assembly is arranged between the bailey beam and the steel pipe stand column and detachably connected with the steel pipe stand column; the suspension assembly comprises a suspension piece and a lifting device, the bottom end of the suspension piece is connected with the joist assembly, the top end of the suspension piece is connected with the lifting device, and the lifting device is arranged at the top of the bridge and can drive the suspension piece, the joist assembly and the bailey beam to ascend and descend. The method has the effect of being high in safety coefficient.

Description

Technical Field

[0001] This application relates to the field of building engineering technology, and in particular to a device for the synchronous unloading of a support frame. Background Technology

[0002] In bridge construction, when land-based construction conditions are available, the Bailey bridge full-span scaffolding method is one of the most commonly used construction methods for cast-in-place bridge main beams.

[0003] Existing Bailey bridges are steel trusses assembled from Bailey bridge frames, typically used in conjunction with steel pipe columns. When dismantling Bailey bridges, workers need to dismantle them step by step from top to bottom. However, because the dimensions of the Bailey bridge beams near the bridge deck in the width direction are much larger than the width of the steel pipe columns near the piers, there are significant safety hazards for workers dismantling Bailey bridges at heights.

[0004] Therefore, there is a need to provide a device for the synchronous unloading of the entire support structure. Utility Model Content

[0005] To address the significant safety hazards associated with the dismantling of existing Bailey bridges, this application provides a device for the synchronous unloading of the entire support structure.

[0006] This application provides a support frame synchronous unloading device, which adopts the following technical solution: it includes a support beam assembly and a suspension assembly, wherein the support beam assembly is disposed between the Bailey beam and the steel pipe column and is detachably connected to the steel pipe column;

[0007] The suspension assembly includes a suspension member and a lifting device. The bottom end of the suspension member is connected to the beam support assembly, and the top end of the suspension member is connected to the lifting device. The lifting device is located at the top of the bridge and can drive the suspension member, the beam support assembly, and the Bailey beam to rise and fall.

[0008] By adopting the above technical solution, workers can pre-install the support beam assembly between the Bailey beam and the steel pipe column when constructing the steel pipe column and Bailey beam, and make the support beam assembly detachably connected to the steel pipe column. When it is necessary to dismantle the steel pipe column and Bailey beam, the user only needs to drive the lifting device to suspend the suspension component, support beam assembly and Bailey beam in the air, then separate the steel pipe column from the support beam assembly to remove the steel pipe column as a whole from the bottom of the Bailey beam, and finally drive the lifting device to slowly lower the suspension component, support beam assembly and Bailey beam to the ground, and complete the dismantling of the Bailey beam on the ground. This eliminates the need for workers to risk working at height to dismantle the Bailey beam at the bottom of the bridge from top to bottom, making the Bailey beam dismantling process safer and more convenient.

[0009] Specifically, the lifting device is a lifting jack.

[0010] By adopting the above technical solution, the lifting jack can drive the lifting of the support beam assembly and Bailey beam by driving the lifting of the suspension components.

[0011] Furthermore, the suspension component is a steel strand, one end of which is connected to the lifting jack, and the other end of which passes downward through a through hole in the bridge and is detachably connected to the beam support assembly.

[0012] By adopting the above technical solution, the lifting jack can be used in conjunction with the steel cable to drive the lifting of the beam assembly.

[0013] Furthermore, the supporting beam assembly includes a crossbeam and a sand cylinder. The crossbeam is located below the Bailey beam along the width direction of the bridge, and the crossbeam is provided with a tensioning end anchor adapted to the steel strand. The steel strand is connected to the crossbeam via the tensioning end anchor.

[0014] The sand cylinder abuts between the crossbeam and the steel pipe column.

[0015] By adopting the above technical solution, when constructing steel pipe columns and Bailey beams, the sand cylinder can extend and form a support between the steel pipe columns and the bottom crossbeams of the Bailey beams; when it is necessary to dismantle the steel pipe columns, workers only need to retract the sand cylinder to easily separate the steel pipe columns from the bottom crossbeams of the Bailey beams.

[0016] Furthermore, it also includes a controller, and multiple lifting devices are spaced apart on the bridge. Each lifting device is electrically connected to the controller, which can control each lifting device to synchronously raise and lower the suspension component.

[0017] By adopting the above technical solution, workers can use a controller to control the various lifting devices on the bridge to simultaneously raise and lower the suspended components and Bailey beams. This can avoid the phenomenon of Bailey beams tilting and colliding with the bridge in the air due to too many or too few suspended components being lowered by a lifting device at a certain point on the bridge.

[0018] Furthermore, the sand cylinder includes a vertical cylinder, a piston, and a sealing element. One end of the piston is inserted into the interior of the vertical cylinder, forming a receiving cavity for accommodating sand and gravel between the piston and the inner wall of the vertical cylinder. A sand outlet hole is provided on the inner wall of the receiving cavity, leading to the outside. One end of the sealing element is inserted into the sand outlet hole and can seal the sand outlet hole.

[0019] By adopting the above technical solution, workers can pull the sealing part out of the sand outlet hole to allow the sand in the receiving cavity to flow out of the receiving cavity from the sand outlet hole, and then allow the piston to slowly sink into the column to achieve the contraction of the sand cylinder; workers can also extend the sand cylinder by pouring sand into the receiving cavity.

[0020] Furthermore, the sealing component includes a plug and a limiting nut. A threaded sleeve is provided at the opening of the sand outlet. One end of the threaded sleeve is fixedly connected to the outer wall of the vertical cylinder. The other end of the threaded sleeve has multiple expansion grooves, and this end of the threaded sleeve is divided into multiple splicing parts by the expansion grooves. The plug includes a large-diameter end and a small-diameter end. The large-diameter end can pass through the end of the threaded sleeve away from the vertical cylinder and be inserted into the sand outlet hole to seal the sand outlet hole.

[0021] The outer wall of the threaded sleeve is provided with an external thread that is adapted to the limiting nut. The limiting nut can be threaded onto the threaded sleeve and the assembled parts abut against the inner ring of the limiting nut and the small diameter end.

[0022] By adopting the above technical solution, the limiting nut can abut against each of the assembled parts between the inner ring of the limiting nut and the small diameter end of the plug, so that the large diameter section of the plug cannot pass through the end port of the threaded sleeve away from the vertical cylinder, thereby achieving a firm seal on the sand outlet hole; after the worker removes the limiting nut, each of the assembled parts can move away from each other and indirectly enlarge the inner diameter of the end port of the threaded sleeve away from the vertical cylinder, so that the large diameter section of the plug can pass through the port and leave the sand outlet hole, thereby allowing the sand and gravel in the receiving cavity to flow out of the receiving cavity through the sand outlet hole and the threaded sleeve.

[0023] Furthermore, the sealing component also includes a connecting rope, one end of which is connected to the plug.

[0024] By adopting the above technical solution, workers can pull out the plug by pulling the connecting rope.

[0025] In summary, this application includes the following beneficial technical effects:

[0026] The system includes a beam support assembly and a suspension assembly. The beam support assembly is positioned between the Bailey bridge beam and the steel pipe column and is detachably connected to the steel pipe column. The suspension assembly includes a suspension member and a lifting device. The bottom end of the suspension member is connected to the beam support assembly, and the top end of the suspension member is connected to the lifting device. The lifting device is located at the top of the bridge and can lift the suspension member, the beam support assembly, and the Bailey bridge beam. Workers can pre-position the beam support assembly between the Bailey bridge beam and the steel pipe column during the construction of the steel pipe column and Bailey bridge beam, and detachably connect the beam support assembly to the steel pipe column. When it is necessary to dismantle the steel pipe columns and Bailey beams, the user only needs to drive the lifting device to suspend the suspension components, support beam assemblies and Bailey beams in the air, then separate the steel pipe columns from the support beam assemblies to remove the steel pipe columns as a whole from the bottom of the Bailey beams, and finally drive the lifting device to slowly lower the suspension components, support beam assemblies and Bailey beams to the ground, and complete the dismantling of the Bailey beams on the ground. This eliminates the need for workers to risk working at height to dismantle the Bailey beams at the bottom of the bridge from top to bottom, making the dismantling process safer and more convenient. Attached Figure Description

[0027] Figure 1 This is a perspective view of a support frame synchronous unloading device according to this application, showing only a section of a bridge;

[0028] Figure 2 This is a front view of a bracket-mounted synchronous unloading device according to this application;

[0029] Figure 3 It is along Figure 2 A schematic cross-sectional view taken along the AA direction, showing only one sand cylinder;

[0030] Figure 4 It is along Figure 3 A schematic cross-sectional view taken along the BB direction, showing only one sand cylinder.

[0031] Reference numerals: 1. Support beam assembly; 11. Crossbeam; 111. Tensioning end anchor; 12. Sand cylinder; 121. Vertical cylinder; 122. Piston; 123. Sealing component; 1231. Plug; 1232. Limiting nut; 1233. Connecting rope; 124. Threaded sleeve; 1241. Assembled component; 125. Connecting rod; 2. Suspension assembly; 21. Suspension component; 22. Lifting device; 3. Bridge; 4. Steel pipe column; 5. Bailey beam; 6. Controller. Detailed Implementation

[0032] Figure 1 This is a perspective view of a scaffolding synchronous unloading device according to this application, showing only a section of bridge. Figure 2 This is a front view of a bracket-mounted synchronous unloading device according to this application. See also: Figure 1 and Figure 2This application provides a synchronous unloading device for a support structure, used to remove the Bailey beam 5 between the bottom of the bridge 3 and the steel pipe columns 4. The device specifically includes: multiple support beam assemblies 1, multiple suspension assemblies 2, and a controller 6. Each support beam assembly 1 includes a crossbeam 11 and ten sand cylinders 12. The crossbeam 11 is positioned below the Bailey beam 5 and above the ten steel pipe columns 4 along the width direction of the bridge 3, and four crossbeam holes are spaced vertically on the crossbeam 11. Each sand cylinder 12 corresponds one-to-one with a steel pipe column 4, and each sand cylinder 12 is positioned between the crossbeam 11 and its corresponding column. Between a steel pipe column 4, the sand cylinder 12 specifically includes a cylinder 121, a piston 122, and a sealing component 123. The bottom of the cylinder 121 is provided with a flange and is detachably bolted to the steel pipe column 4 through the flange. The top of the column is provided with a cylinder opening. The bottom end of the piston 122 is inserted into the inside of the cylinder 121, and a receiving cavity for receiving sand and gravel is formed between the piston 122 and the inner wall of the cylinder 121. The top of the piston 122 is also provided with a flange and is detachably bolted to the crossbeam 11 through the flange. A sand outlet hole is opened on the side wall of the receiving cavity to the outside.

[0033] Figure 3 It is along Figure 2 A schematic cross-sectional view taken along the AA direction, showing only one sand cylinder 12. Figure 4 It is along Figure 3 A schematic cross-sectional view taken along the BB direction, showing only one sand cylinder 12. See also Figure 3 and Figure 4 The sealing component 123 includes a plug 1231 and a limiting nut 1232. A threaded sleeve 124 is provided at the opening of the sand outlet. One end of the threaded sleeve 124 is fixedly connected to the outer wall of the vertical cylinder 121. The other end of the threaded sleeve 124 has multiple expansion grooves, and this end of the threaded sleeve 124 is divided into multiple splicing parts 1241 by the expansion grooves. The plug 1231 includes a large-diameter end and a small-diameter end. The large-diameter end can pass through a portion of the threaded sleeve 124 away from the vertical cylinder 121. The end port is inserted into the sand outlet hole and can seal the sand outlet hole; the outer wall of the threaded sleeve 124 is provided with an external thread that is compatible with the limit nut 1232. The limit nut 1232 can be threaded with the threaded sleeve 124 and each splice 1241 abuts between the inner ring and the small diameter end of the limit nut 1232, so that the large diameter section of the plug 1231 cannot pass through the end port of the threaded sleeve 124 that is away from the vertical cylinder 121, thereby achieving a firm seal on the sand outlet hole.

[0034] See Figure 3 and Figure 4One end of the connecting rope 1233 is connected to the plug 1231, and the other end of the connecting rope 1233 is tied to a connecting rod. The connecting rod is set along the width direction of the bridge 3. All ten connecting ropes 1233 in each set of supporting beam assembly 1 are tied to the connecting rod so that the worker can directly pull down the connecting rod after removing the limit nut 1232. At this time, each splice 1241 on each sand cylinder 12 can move away from each other and indirectly enlarge the inner diameter of the end port of the bolt sleeve 124 away from the vertical cylinder 121, so that the large diameter section of the plug 1231 in the ten sand cylinders 12 can leave the corresponding sand outlet hole, so that the sand and gravel in the ten sand cylinders 12 can simultaneously pass through the sand outlet hole and the bolt sleeve 124 and flow out of the receiving cavity, thereby realizing synchronous sand discharge.

[0035] See Figure 1 and Figure 2 Each suspension component 2 corresponds to a crossbeam hole. Each suspension component 2 includes a suspension element 21 and a lifting device 22. The suspension element 21 can be a bundle of three steel strands. The bottom end of the steel strand passes through the corresponding crossbeam hole and is connected to the crossbeam 11 through a tensioning end anchor 111 adapted to the steel strand. The lifting device 22 is a lifting jack, which is fixedly installed above the bridge 3. The top end of the steel strand passes through a through hole formed by a PVC pipe pre-embedded during the pouring of the bridge 3 and is connected to the lifting jack so that the lifting jack can cooperate with the steel strand to drive the lifting beam component 1 to rise and fall. The controller 6 is located above the bridge 3. Each lifting device 22 is electrically connected to the controller 6 so that workers can control the lifting devices 22 on the bridge 3 to synchronously raise and lower the suspension element 21 and Bailey beam 5. This can avoid the phenomenon that the Bailey beam 5 tilts and collides with the bridge 3 in the air due to the lifting device 22 at a certain point of the bridge 3 lowering too much or too little suspension element 21.

[0036] The working principle of the overall synchronous unloading device for the support frame according to this application is as follows:

[0037] Workers can pre-install the crossbeam 11 and sand cylinder 12 between the Bailey beam 5 and the steel pipe column 4 when erecting the steel pipe column 4 and Bailey beam 5. Sand cylinder 12 can be extended and detachably connected to the steel pipe column 4 using sand and gravel. When it is necessary to dismantle the steel pipe column 4 and Bailey beam 5, the user only needs to drive the lifting jack to suspend the steel strands, crossbeam 11, and Bailey beam 5 in the air, then remove the limiting nuts 1232 on each sand cylinder 12, and then directly pull down each connecting rod to ensure that the large-diameter section of the plug 1231 in each sand cylinder 12 is aligned. It can leave the corresponding sand outlet, so that each sand cylinder 12 can release sand and shrink synchronously. Then, the sand cylinder 12 is separated from the crossbeam 11 and the steel pipe column 4 and sand cylinder 12 are removed from the bottom of the Bailey beam 5 as a whole. Finally, the lifting jack is driven to slowly lower the steel strand, crossbeam 11 and Bailey beam 5 to the ground and complete the dismantling of Bailey beam 5 on the ground. This allows workers to dismantle the Bailey beam 5 at the bottom of the bridge 3 from top to bottom without the danger of working at height, making the dismantling process of Bailey beam 5 safer and more convenient.

[0038] It should be noted that the above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A synchronous unloading device for a support frame, used to remove the Bailey bridge beam between the bottom of the bridge and the steel pipe column, characterized in that: It includes a beam support assembly (1) and a suspension assembly (2), wherein the beam support assembly (1) is disposed between the Bailey beam (5) and the steel pipe column (4) and is detachably connected to the steel pipe column (4); The suspension assembly (2) includes a suspension member (21) and a lifting device (22). The bottom end of the suspension member (21) is connected to the beam support assembly (1), and the top end of the suspension member (21) is connected to the lifting device (22). The lifting device (22) is located on the top of the bridge (3), and the lifting device (22) can drive the suspension member (21), the beam support assembly (1), and the Bailey beam (5) to rise and fall.

2. The overall synchronous unloading device for a support frame according to claim 1, characterized in that: The lifting device (22) is a lifting jack.

3. The overall synchronous unloading device for a support frame according to claim 2, characterized in that: The suspension component (21) is a steel strand. One end of the steel strand is connected to the lifting jack, and the other end of the steel strand passes downward through the through hole opened on the bridge (3) and is detachably connected to the beam assembly (1).

4. The overall synchronous unloading device for a support frame according to claim 3, characterized in that: The beam support assembly (1) includes a crossbeam (11) and a sand cylinder (12). The crossbeam (11) is located below the Bailey beam (5) along the width direction of the bridge (3), and the crossbeam (11) is provided with a tensioning end anchor (111) adapted to the suspension member (21). The suspension member (21) is connected to the crossbeam (11) via the tensioning end anchor (111). The sand cylinder (12) abuts between the crossbeam (11) and the steel pipe column (4).

5. The overall synchronous unloading device for a support frame according to claim 2, characterized in that: It also includes a controller (6), and multiple lifting devices (22) are spaced apart on the bridge (3). Each lifting device (22) is electrically connected to the controller (6), and the controller (6) can control each lifting device (22) to synchronously raise and lower the suspension component (21).

6. The overall synchronous unloading device for a support frame according to claim 4, characterized in that: The sand cylinder (12) includes a vertical cylinder (121), a piston (122), and a sealing member (123). One end of the piston (122) is inserted into the interior of the vertical cylinder (121) and forms a receiving cavity for receiving sand and gravel between the piston (122) and the inner wall of the vertical cylinder (121). A sand outlet hole is provided on the inner wall of the receiving cavity to the outside. One end of the sealing member (123) is inserted into the sand outlet hole and can block the sand outlet hole.

7. The overall synchronous unloading device for a support frame according to claim 6, characterized in that: The sealing component (123) includes a plug (1231) and a limiting nut (1232). A threaded sleeve (124) is provided at the opening of the sand outlet hole. One end of the threaded sleeve (124) is fixedly connected to the outer wall of the vertical cylinder (121). The other end of the threaded sleeve (124) is provided with multiple expansion grooves, and the expansion grooves divide the other end of the threaded sleeve (124) into multiple splicing parts (1241). The plug (1231) includes a large-diameter end and a small-diameter end. The large-diameter end can pass through the end of the threaded sleeve (124) away from the vertical cylinder (121) and be inserted into the sand outlet hole to seal the sand outlet hole. The outer wall of the threaded sleeve (124) is provided with an external thread that is compatible with the limiting nut (1232). The limiting nut (1232) can be threaded onto the threaded sleeve (124) and each of the splicing parts (1241) abuts between the inner ring of the limiting nut (1232) and the small diameter end.

8. The overall synchronous unloading device for a support frame according to claim 7, characterized in that: The sealing component (123) also includes a connecting rope (1233), one end of which is connected to the plug (1231).

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