Temporary bag hanging device for hanging rod replacement

Abstract

The temporary bag lifting device for suspender replacement comprises at least one set of tensioning mechanisms, bottom bag mechanisms and slideway beam mechanisms which are symmetrically arranged, each tensioning mechanism comprises a jacking device, a pull rod piece and a sliding piece, the jacking devices are fixed to the sliding pieces, the pull rod pieces are connected with the jacking devices, and the jacking devices are used for driving the jacking devices to move up and down; the bottom supporting mechanism comprises a steel cross beam supporting piece, and the steel cross beam supporting piece is connected to the pull rod piece and used for supporting the bottom of the steel cross beam; the slideway beam mechanism comprises a slideway beam which is fixed to the top of the steel cross beam and arranged in the full-length direction of the bridge deck, the jacking device is detachably connected with the slideway beam, and the sliding piece is in sliding fit with the slideway beam. The device provided by the utility model is arranged above a bridge floor steel cross beam, a large amount of operation at a vault high altitude is avoided, meanwhile, the structural stress is pure vertical load, the construction safety is improved, the tensioning mechanism can slide to the position of the next suspender, the mounting and dismounting workload is small, the structure is simple, and the universality is high.

Description

Technical Field

[0001] The present application relates to the technical field of arch bridge maintenance and reconstruction, and in particular to a temporary hoisting device for replacing a hanger rod. Background Art

[0002] With the passage of time and the updating of technical specifications, most of the bridges designed in the early stage have reached their design service life or no longer meet the current specification requirements. Therefore, such bridges must be repaired and reinforced to ensure their continued safe use. The repair and reinforcement process of arch bridges is more complicated. Considering the structural particularity of arch bridges, the repair and reinforcement of arch bridges must always ensure the integrity of their structural system, especially the replacement of hangers. As the support point of the bridge deck system, temporary structures must be used to replace the original bridge hangers during the replacement process. Nowadays, most arch bridge hanger replacements use the method of setting a clamp device on the arch structure, using the friction between the clamp and the donor to bear the hanger load, which has very high requirements for on-site control and insufficient safety. At the same time, the replacement of each set of hangers requires the installation and removal of the clamp on the arch top, which requires a large amount of high-altitude operations and high safety risks. As a special structure, the clamp needs to be independently designed, with a low reuse rate, which is not conducive to cost control. Summary of the invention

[0003] The embodiment of the present application provides a temporary hoisting device for boom replacement to solve the problem that in the process of boom maintenance and replacement in the related technology, a temporary structure needs to be used to replace the original bridge boom to bear the force. The existing method uses the friction between the clamp and the donor to bear the boom load, which has very high requirements for on-site control and insufficient safety. At the same time, the replacement of each set of booms requires the installation and removal of the clamp on the arch, which requires a large amount of high-altitude operations and high safety risks. The clamp, as a special structure, needs to be designed independently, has a low reuse rate, and is not conducive to cost control.

[0004] The present application provides a temporary lifting device for replacing a hanger rod, comprising at least one group of symmetrically arranged tensioning mechanisms, bottom-lifting mechanisms and slide beam mechanisms, each tensioning mechanism comprising a lifting device, a pull rod and a sliding member, the lifting device being fixed on the sliding member, the pull rod being connected to the lifting device, the lifting device being used to drive the lifting and lowering movement thereof; the bottom-lifting mechanism comprising a steel beam support member, the steel beam support member being connected to the pull rod member, and being used to support the bottom of the steel beam; the slide beam mechanism comprising a slide beam, which is fixed on the top of the steel beam and arranged along the length of the bridge deck, the lifting device being detachably connected to the slide beam, and the sliding member being slidably matched with the slide beam.

[0005] In some embodiments, the lifting device is configured as a jack, the pull rod member passes through the jack, and the bottom end is connected to a steel beam support member.

[0006] In some embodiments, the jack is fixed to the sliding member via an anchoring base, and the jack, the anchoring base and the sliding member are integrally detachably connected to the slide beam.

[0007] In some embodiments, the jack is installed on an anchor base, and the bottom of the anchor base is welded and fixed to the sliding member and screwed to the slide beam.

[0008] In some embodiments, the steel beam support is configured as a double-piece steel section arranged side by side in a transverse direction, and the double-piece steel section is provided with screw holes arranged at intervals along its length direction, and is fastened to a pair of the bottoms of the pull rods through anchors.

[0009] In some embodiments, the double-jointed steel section is formed by welding two right-angle steel beams together.

[0010] In some embodiments, at least one pair of symmetrically arranged tensioning mechanisms are slidably engaged on the slideway beam via a guide chain.

[0011] In some embodiments, the sliding member is a box-shaped structure welded from multiple steel plates, and is provided with sliding limit grooves located on both sides of the center line of the slide beam. The slide beam is provided with corresponding reserved holes, and bolts pass through the sliding limit holes and the reserved holes to fix the sliding member on the slide beam.

[0012] In some embodiments, the sliding limit hole is configured as a waist-shaped hole.

[0013] In some embodiments, the anchor base is a stainless steel chassis. The beneficial effects brought by the technical solution provided by this application include:

[0014] The embodiment of the present application provides a temporary lifting device for replacing hangers. Compared with the traditional structure, the lifting device provided by the present application is arranged above the steel crossbeam of the bridge deck, avoiding a large amount of work at high altitude on the arch. At the same time, the structure is subjected to a pure vertical load, which improves construction safety. The tensioning mechanism can slide to the position of the next group of hangers through the base, reducing the workload of temporary structure installation and disassembly. The lifting system has a simple structure and strong versatility, and can be used in similar arch bridge structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 A schematic diagram of an installation scenario for replacing a temporary hanging device with a hanging rod provided in an embodiment of the present application;

[0017] Figure 2 A schematic diagram of the structure of a temporary hanging device for replacing a hanging rod provided in an embodiment of the present application;

[0018] Figure 3 A schematic diagram of the installation scenario in the vertical cross-section direction of the arch structure of the temporary hanging device for replacing the hanging rod provided in an embodiment of the present application;

[0019] Figure 4 A schematic structural diagram from another angle of the temporary hanging device for replacing the hanging rod provided in an embodiment of the present application.

[0020] In the figure: 100, temporary lifting device for replacing the suspension rod; 1, tensioning system; 11, tensioning jack; 12, anchor base; 13, tie rod; 14, fixing bolt; 15, sliding base; 2, bottom lifting system; 21, steel beam support; 22, anchor; 3, slideway system; 31, slideway beam; 32, limiter; 200, steel beam; 300, suspension rod; 400, arch structure. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0022] When an arch bridge is repaired and reinforced, the integrity of its structural system needs to be ensured. The hangers serve as the supporting points of the bridge deck system. During the replacement process, a temporary structure needs to be used to replace the original bridge hangers to support the steel cross beam 200 of the bridge deck. However, the existing temporary structures are all constructed on the arch structure 400, which has high requirements for on-site control, insufficient safety, and a large amount of installation and disassembly work. It needs to be independently designed as a special structure, has a low reuse rate, and is not conducive to cost control.

[0023] In view of this, please refer to Figure 1-2The embodiment of the present application provides a temporary hanging device 100 for replacing a hanger rod, which is used for the maintenance and construction of an arch bridge, and includes at least one group of symmetrically arranged tensioning mechanisms, bottom-supporting mechanisms and slide beam mechanisms, each tensioning mechanism includes a jacking device, a tie rod 13 and a sliding member, the jacking device is fixed on the sliding member, the tie rod 13 is connected to the jacking device, and the jacking device is used to drive it to move up and down; the bottom-supporting mechanism includes a steel beam support 21, the steel beam support 21 is connected to the tie rod 13, and is used to support the bottom of the steel beam 200; the slide beam mechanism includes a slide beam 31, which is fixed to the top of the steel beam 200 and is arranged along the length of the bridge deck, that is, along the length direction of the bridge deck, the jacking device is detachably connected to the slide beam 31, and the sliding member is slidably matched with the slide beam 31.

[0024] Compared with the traditional structure, the embodiment of the present application provides a temporary hanging device 100 for replacing a hanging rod. The device is supported by the original bridge deck steel beam 200 and is arranged above the bridge deck steel beam 200 instead of on the arch structure 400, thereby avoiding a large number of operations at high altitude on the arch top. At the same time, the structural force is a simple vertical load, thereby improving the construction safety.

[0025] The temporary hanging device 100 for replacing the hanging rod provided in this period has a simple structure. When replacing hanging rods at different positions, it is only necessary to slide the tensioning mechanism through the base to the position of the next group of hanging rods, thereby reducing the workload of temporary structure installation and disassembly.

[0026] The hoisting system has a simple structure, low implementation cost, and strong versatility, and can be used in similar arch bridge structures.

[0027] The embodiment of the present application provides a temporary lifting device 100 for replacing a hanger rod, which is used for the maintenance and construction of an arch bridge, and includes at least one group of symmetrically arranged tensioning mechanisms, bottom-supporting mechanisms and slide beam mechanisms, each tensioning mechanism including a jack, a tie rod 13 and a sliding member, the jack being fixed on the sliding member, the tie rod 13 passing through the jack, and the bottom end being connected to a steel beam support 21, the jack being used to drive the lifting and lowering movement thereof; the bottom-supporting mechanism including a steel beam support 21, the steel beam support 21 being connected to the tie rod 13, and being used to support the bottom of a steel beam 200; the slide beam mechanism including a slide beam 31, which is fixed to the top of the steel beam 200 and arranged along the length of the bridge deck, the lifting device being detachably connected to the slide beam 31, and the sliding member being slidably matched with the slide beam 31.

[0028] In one embodiment, the jack is fixed to the sliding member through an anchor base 12, and the jack, the anchor base 12 and the sliding member are detachably connected to the slide beam 31 as a whole, so that when the hanger is replaced, the jack, the anchor base 12 and the sliding member are fixed to the slide beam 31 as a whole, and the jack is used to drive the pull rod 13 to rise, so that the steel beam support member 21 can rise to support the bottom of the bridge deck steel beam 200, replacing the original hanger to pull the steel beam 200 to apply force; when it is necessary to move to the next hanger construction position, the jack, the anchor base 12 and the sliding member are removed and fixed from the slide beam 31 as a whole, and the jack, the anchor base 12 and the sliding member are moved to the next hanger construction position by sliding cooperation between the sliding member and the slide beam 31.

[0029] In one embodiment, the bottom of the jack is welded and fixed to the anchor base 12 , and the bottom of the anchor base 12 is welded and fixed to the sliding member and screwed to the slide beam 31 .

[0030] In one embodiment, the steel beam support member 21 is configured as a double-piece steel section arranged side by side in a transverse direction. The double-piece steel section is provided with screw holes arranged at intervals along its length direction. It is fastened to the bottom of a pair of the tie rod members 13 through anchor members 22 to hang the double-piece steel section on a pair of tie rod members 13. The top surface of the double-piece steel section becomes a load-bearing bottom support surface that replaces the existing hanger rod to hang the steel beam 200.

[0031] In one embodiment, the double-jointed steel section is formed by welding two right-angle steel beams together. More specifically, double-jointed I-45 or other steel sections are used.

[0032] In one embodiment, the slideway beam 31 is made of double-jointed steel sections arranged side by side in a transverse direction, and more specifically, double-jointed steel sections of H588 or above are made of double-jointed steel sections.

[0033] In one embodiment, at least one pair of symmetrically arranged tensioning mechanisms are slidably engaged on the slide beam 31 through a guide chain. When it is necessary to move to the next boom construction position, the jack, the anchor base 12 and the sliding member are removed and fixed from the slide beam 31 as a whole, and the jack, the anchor base 12 and the sliding member are moved to the next boom construction position by pulling the guide chain through the sliding engagement between the sliding member and the slide beam 31, which makes the operation more convenient.

[0034] In one embodiment, the sliding member is a box-shaped sliding base 15 welded from a plurality of steel plates, on which sliding limit grooves are provided on both sides of the center line of the slide beam 31, and corresponding reserved holes are provided on the slide beam 31. Bolts pass through the sliding limit holes and the reserved holes to fix the sliding member on the slide beam 31.

[0035] In one embodiment, the sliding limit hole is set to a waist-shaped hole so that the temporary hanging device 100 for replacing the hanger provided in the present application can be positioned against the hanger to be replaced, so that the steel beam support 21 is firmly supported on both sides of the steel beam 200 pulled by the hanger to be replaced, evenly bearing the hanger load, thereby minimizing the structural damage to the bridge deck support system caused by replacing the hanger.

[0036] In one embodiment, the anchor base 12 is a stainless steel chassis.

[0037] The principle / method of use of the embodiment of this application is:

[0038] like Figure 3-Figure 4 As shown, first, a full-length slideway beam 31 system is installed on the bridge deck. The slideway beam 31 system uses the original structural beam as a support and can also serve as a construction platform for subsequent operations. The anchor base 12 and the sliding base 15 are welded and fixed and then installed on the slideway beam 31. Then, the limit groove on the sliding base 15 is installed, and a jack is installed on the anchor base 12. The tie rod 13 is inserted, and the bottom system 2 is transported to the corresponding position below the original bridge steel beam 200 by a crane. The tie rod 13 is passed through the bottom beam and locked with the anchor 22. Then, the tensioning system 1 and the slideway beam 31 system are fixed with bolts. The tensioning hydraulic jack 11 makes the bottom support system 22 subject to force. At this time, the load of the arch bridge hanger at the original structural steel beam 200 is transmitted by the tensioning system 12 to the slideway beam 31 and then distributed to the steel beams 200 on both sides. At this time, the hanger is in a no-load state and the hanger replacement operation can be carried out. After the hanger replacement is completed, the jack is released, the bottom support system 2 is removed by the crane, the bolts of the tensioning system 1 are loosened, and then the tensioning system 1 is slid along the slideway beam 31 to the next hanger replacement position and fixed by the guide chain, the bottom support system 2 is reinstalled, and then the above work is repeated to complete the next hanger replacement.

[0039] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0040] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0041] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A temporary hanging device for replacing a hanging rod, characterized in that: include: At least one set of symmetrically arranged tensioning mechanisms, each of which comprises a lifting device, a pull rod and a sliding member, wherein the lifting device is fixed on the sliding member, the pull rod is connected to the lifting device, and the lifting device is used to drive the lifting and lowering movement thereof; The bottom support mechanism comprises a steel beam support member, wherein the steel beam support member is connected to the pull rod member and is used to support the bottom of the steel beam; The slide beam mechanism comprises a slide beam which is fixed on the top of the steel beam and arranged along the length of the bridge deck; the lifting device is detachably connected to the slide beam; and the sliding member is slidably matched with the slide beam.

2. The temporary hanging device for replacing the hanging rod according to claim 1, characterized in that: The lifting device is configured as a jack, the pull rod member passes through the jack, and the bottom end is connected to a steel beam support member.

3. The temporary hanging device for replacing the hanging rod according to claim 2, characterized in that: The jack is fixed on the sliding member through an anchoring base, and the jack, the anchoring base and the sliding member are integrally detachably connected to the slideway beam.

4. The temporary hanging device for replacing the hanging rod according to claim 3, characterized in that: The jack is installed on an anchoring base, and the bottom of the anchoring base is welded and fixed on the sliding member and screwed on the slideway beam.

5. The temporary hanging device for replacing the hanging rod according to claim 1, characterized in that: The steel beam support is configured as a double-piece steel section arranged side by side in a transverse direction. The double-piece steel section is provided with screw holes arranged at intervals along its length direction and is fastened to the bottom of a pair of the pull rods through anchors.

6. The temporary hanging device for replacing the hanging rod according to claim 5, characterized in that: The double-jointed steel section is formed by welding two right-angle steel beams together.

7. The temporary hanging device for replacing the hanging rod according to claim 1, characterized in that: At least one pair of symmetrically arranged tensioning mechanisms is slidably matched on the slideway beam through a guide chain.

8. The temporary hanging device for replacing the hanging rod according to claim 1, characterized in that: The sliding member is a box-shaped structure welded from multiple steel plates, on which sliding limit grooves are provided on both sides of the center line of the slide beam. The slide beam is provided with corresponding reserved holes. Bolts pass through the sliding limit holes and the reserved holes to fix the sliding member on the slide beam.

9. The temporary hanging device for replacing the hanging rod according to claim 8, characterized in that: The sliding limiting hole is configured as a waist-shaped hole.

10. The temporary hanging device for replacing the hanging rod according to claim 3, characterized in that: The anchoring base is a stainless steel chassis.

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