Transverse moving tackle system for dismantling cross beam bailey bracket

Abstract

The utility model relates to the technical field of beam bailey support dismantling, and provides a transverse moving tackle system for dismantling a beam bailey support, which structurally comprises two sets of transverse moving tackle systems respectively arranged on the left side and the right side of a transverse bridge at the bottom of a cable bent tower beam, and each transverse moving tackle system comprises a plurality of sets of anchoring parts pre-buried in the cable bent tower beam, the bottom of the anchoring part is connected with a transverse moving hanging beam, and a transverse moving tackle is movably arranged on the transverse moving hanging beam and connected with a steel wire rope. The utility model provides the cast-in-place support construction of the structure which is particularly suitable for the higher terrain clearance and large pouring capacity. The tool has the advantages of being high in dismantling efficiency, low in cost and good in safety.

Description

Technical Field

[0001] The utility model relates to the technical field of dismantling a crossbeam Bailey bracket, in particular to a transverse pulley system for dismantling a crossbeam Bailey bracket. Background Art

[0002] For the pouring of large-span structures, Bailey brackets are widely used due to their strong spanning capacity and high structural rigidity. When the structure above the Bailey bracket has not yet been poured, the Bailey bracket can be lifted and installed by a tower crane. However, after the structure is poured, due to the existence of the structure, the tower crane and the truck crane arm cannot enter the bracket to lift it, so the removal of the Bailey bracket is extremely difficult. Due to the existence of the structure above the Bailey bracket, the key to removing the Bailey bracket is how to move it horizontally out of the bottom of the structure.

[0003] The conventional Bailey bracket removal method is to drag the Bailey bracket by setting electric hoists on both sides of the bottom of the structure, but this method has extremely low removal efficiency. At the same time, the Bailey bracket is easy to overturn during dragging, which poses a greater safety risk and is easy to damage. For the Bailey brackets that are removed from the ground at a high height and a large volume of cast, they are heavy and difficult to drag as a whole. In addition, the removal of such Bailey brackets also has the difficulties of high height from the ground, great influence of environmental wind speed, great safety risk of lowering the bracket as a whole, and complex bracket system of large volume structures, heavy weight, and poor overall lowering economy. Utility Model Content

[0004] The utility model provides a transverse pulley system for dismantling a crossbeam Bailey bracket, and its purpose is to be able to dismantle the crossbeam Bailey bracket, and is particularly suitable for the construction of cast-in-place brackets for structures with a high height from the ground and a large casting volume. The utility model has the characteristics of high dismantling efficiency, low cost and good safety.

[0005] The technical solution of the utility model is: a transverse pulley system for dismantling a crossbeam Bailey bracket, including a set of transverse pulley systems arranged on the left and right sides of the cross bridge at the bottom of the tower crossbeam, the transverse pulley system includes a plurality of anchors pre-buried in the tower crossbeam, the bottom of the anchor is connected to the transverse suspension beam, a transverse pulley is movably arranged on the transverse suspension beam, and the transverse pulley is connected to a steel wire rope.

[0006] In the aforementioned transverse pulley system for dismantling the crossbeam Bailey bracket, the multiple sets of anchors are arranged along the bridge direction, and one set of anchors includes two precision-rolled threaded hanger bars or two precision-rolled threaded hooks.

[0007] In the aforementioned transverse pulley system for dismantling the crossbeam Bailey bracket, the precision-rolled threaded hanger bar is passed through the web cavity of the tower crossbeam; the precision-rolled threaded hook part is pre-embedded in the solid web of the tower crossbeam.

[0008] In the aforementioned transverse pulley system for dismantling the transverse beam Bailey bracket, the transverse suspension beam includes an upper flange of the transverse suspension beam and a lower flange of the transverse suspension beam, and a vertical beam of the transverse suspension beam is located between the upper flange of the transverse suspension beam and the lower flange of the transverse suspension beam.

[0009] In the aforementioned transverse pulley system for dismantling the crossbeam Bailey bracket, the fine-rolled threaded hanger bar passes through the bottom plate of the tower crossbeam and the upper flange of the transverse hanger beam, and the upper and lower ends of the fine-rolled threaded hanger bar are respectively connected with nuts. The nut at the upper end is fastened to the top of the cavity bottom plate of the tower crossbeam, and the nut at the lower end is fastened to the bottom of the upper flange of the transverse hanger beam.

[0010] In the aforementioned transverse pulley system for dismantling the crossbeam Bailey bracket, two nuts connected at the lower ends of two precision-rolled threaded suspension bars belonging to a set of anchors are respectively fastened to the left and right sides of the upper flange of the transverse suspension beam.

[0011] In the aforementioned transverse pulley system for dismantling the crossbeam Bailey bracket, the lower end of the fine-rolled threaded hook is provided with an embedded sleeve embedded in the tower crossbeam, the embedded sleeve is connected to the upper part of the fine-rolled threaded steel bar arranged through the upper flange of the transverse suspension beam, and the lower part of the fine-rolled threaded steel bar is connected to the fastening sleeve fastened to the bottom of the upper flange of the transverse suspension beam.

[0012] In the aforementioned transverse pulley system for dismantling the crossbeam Bailey bracket, two fastening sleeves arranged below each of the two precision-rolled threaded hook members belonging to a set of anchor members are fastened to the left and right sides of the upper flange of the transverse suspension beam respectively.

[0013] In the aforementioned transverse pulley system for removing the crossbeam Bailey bracket, a reserved hole is provided on the upper flange of the transverse suspension beam.

[0014] In the aforementioned transverse pulley system for dismantling the crossbeam Bailey bracket, the electric transverse pulley is suspended on the lower flange of the transverse suspension beam and moves through a pulley.

[0015] Compared with the prior art, the device of the utility model is fixed on the same Bailey bracket by two steel wire ropes. By moving the transverse pulley, the Bailey bracket can be moved out of the bottom of the cable tower beam, and then the Bailey bracket fixed and moved out by the steel wire ropes of the left and right tower cranes of the cable tower is lowered to the ground, so that the removal operation of one Bailey bracket can be completed. The Bailey brackets are removed one by one from the outside to the inside, and the removal operation of the entire Bailey bracket can be completed one by one. The utility model has the advantages of convenient operation, high dismantling efficiency and safety. The key to the transverse system is to solve the problem of the Bailey truss beam being moved horizontally out of the bottom of the beam at high altitude for easy lifting and dismantling. The application effect is good and has broad promotion prospects. Compared with the conventional dismantling method, the utility model is suitable for the construction of cast-in-place brackets for structures with a high height from the ground and a large casting volume, and the utility model has the characteristics of high dismantling efficiency, low cost and good safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art 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 paying creative labor.

[0017] Figure 1 It is a schematic diagram of the elevation structure of the transverse pulley system used for removing the crossbeam Bailey bracket;

[0018] Figure 2 for Figure 1 A magnified schematic diagram of the structure in the middle A range (the figure shows the setting structure of the two anchors in perspective);

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the transverse pulley system used for removing the crossbeam Bailey bracket;

[0020] Figure 4 for Figure 3 A schematic diagram of the structure enlargement in the middle B range;

[0021] Figure 5 It is a schematic diagram of the plane structure of the upper flange of the transverse hanging beam;

[0022] Figure 6 is a schematic diagram of the cross-sectional structure of the Bailey stent (33);

[0023] The markings in the figure are: 1- Bailey bracket; 2- cable tower crossbeam; 3- cable tower column; 4- anchor; 41- fine-rolled threaded hanging bar; 42- fine-rolled threaded hook; 401- nut; 402- embedded sleeve; 403- fastening sleeve; 404- fine-rolled threaded steel bar; 5- transverse lifting beam; 51- upper flange of transverse lifting beam; 52- lower flange of transverse lifting beam; 53- vertical beam of transverse lifting beam; 501- reserved hole; 6- electric transverse pulley; 61- pulley; 7- wire rope. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the present application, 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 only 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 creative work should fall within the scope of protection of the present application.

[0025] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0026] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0027] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] Embodiment. A traverse pulley system for removing a beam Bailey support, such as Figure 1-5 As shown, a transverse pulley system is arranged on both sides of the left and right sides of the bottom cross bridge of the cable tower beam 2. The transverse pulley system includes multiple sets of anchors 4 embedded in the cable tower beam 2. The bottom of the anchor 4 is connected to the transverse suspension beam 5. A transverse pulley 6 is movably arranged on the transverse suspension beam 5. The transverse pulley 6 is connected to the wire rope 7.

[0030] Through this system, the transverse pulley 6 can move on the transverse suspension beam 5 and be fixed on the same Bailey bracket through two steel wire ropes 7. By moving the transverse pulley 6, the Bailey bracket can be moved out of the bottom of the tower beam 2; then, the left and right tower crane steel wire ropes of the tower 3 are used to fix them on the moved Bailey bracket 1 and lower them to the ground; the order of dismantling the Bailey bracket is to dismantle them one by one from the outside to the inside, and the dismantling operation of the Bailey bracket can be completed in this way.

[0031] The multiple sets of anchors 4 are arranged along the bridge direction, and one set of anchors 4 includes two finely rolled threaded hangers 41 or two finely rolled threaded hooks 42. The multiple sets of anchors 4 are arranged along the bridge direction to ensure the moving direction of the transverse pulley 6, and the Bailey bracket can be moved out of the bottom of the tower beam 2.

[0032] The precision-rolled threaded hanging rod 41 is passed through the web cavity of the cable tower cross beam 2 ; the precision-rolled threaded hanging hook 42 is pre-embedded in the solid web of the cable tower cross beam 2 .

[0033] The transverse suspension beam 5 is modified by I-beam; the transverse suspension beam 5 comprises an upper flange 51 and a lower flange 52 of the transverse suspension beam, and a vertical beam 53 of the transverse suspension beam is located between the upper flange 51 and the lower flange 52 of the transverse suspension beam.

[0034] The fine-rolled threaded hanging bar 41 passes through the bottom plate of the tower beam 2 and the upper flange 51 of the transverse hanging beam, and the upper and lower ends of the fine-rolled threaded hanging bar 41 are respectively connected with nuts 401, the nut 401 at the upper end is fastened to the top of the cavity bottom plate of the tower beam 2, and the nut 401 at the lower end is fastened to the bottom of the upper flange 51 of the transverse hanging beam. The transverse hanging beam 5 is fixed at the web cavity position of the tower beam 2 by the fine-rolled threaded hanging bar 41.

[0035] The lower end of the fine-rolled thread hook 42 is provided with an embedded sleeve 402 embedded in the cable tower cross beam 2, the embedded sleeve 402 is connected to the upper part of the fine-rolled threaded steel bar 404 arranged through the upper flange 51 of the transverse suspension beam, and the lower part of the fine-rolled threaded steel bar 404 is connected to the fastening sleeve 403 fastened to the bottom of the upper flange 51 of the transverse suspension beam. At the solid position of the web of the cable tower cross beam 2, the transverse suspension beam 5 is fixed by the fine-rolled thread hook 42.

[0036] Two nuts 401 connected at the lower ends of two finely rolled threaded hanging bars 41 belonging to a set of anchors 4 are respectively fastened to the left and right sides of the upper flange 51 of the transverse hanging beam. Two fastening sleeves 403 arranged below two finely rolled threaded hooks 42 belonging to a set of anchors 4 are respectively fastened to the left and right sides of the upper flange 51 of the transverse hanging beam. Each set of anchors 4 is fixed from the left and right parts of the upper flange 51 of the transverse hanging beam at the same time, which can effectively fix the transverse hanging beam 5 and ensure safety.

[0037] The upper flange 51 of the transverse suspension beam is provided with a reserved hole 501. The reserved hole 501 is provided at a position corresponding to the fine rolling thread suspension rod 41 and the fine rolling thread hook member 42, and is used for installing the fine rolling thread suspension rod 41 and the fine rolling thread hook member 42.

[0038] The electric traverse pulley 6 is suspended on the lower flange 52 of the traverse suspension beam and moves through the pulley 61. The traverse pulley 6 is an existing device, which includes a motor that can drive the pulley 61, so that the electric traverse pulley 6 moves along the lower flange 52 of the traverse suspension beam; and also includes another motor to realize the winding and release of the wire rope 7.

[0039] When using the above system for construction, the main steps are as follows:

[0040] S1: Install embedded parts. When pouring the bottom of the tower beam 2, embed a PVC pipe slightly larger than the finely rolled threaded hanger bar 41 at the position of the hollow finely rolled threaded hanger bar 41 of the tower beam 2, and embed the finely rolled threaded hook 42 and the embedded sleeve 402 at the solid part of the web of the tower beam 2.

[0041] S2: When the tower beam 2 is cast and the Bailey bracket 1 and the bottom bracket between the tower beam 2 are removed, the transverse pulley system is installed. During installation, the fine-rolled threaded hanging bar 41 is inserted into the modified upper flange 51 of the transverse hanging beam, and fixed up and down with the nut 401, and the fine-rolled threaded steel bar 404 is inserted into the upper flange 51 of the transverse hanging beam and locked with the embedded sleeve 402 and the fastening sleeve 403. The electric transverse pulley 6 is suspended on the lower flange 52 of the transverse hanging beam, and the pulley 61 is in contact with the lower flange 52 of the transverse hanging beam. The steel wire rope 7 is suspended under the electric transverse pulley 6 for easy connection with the Bailey bracket. After the installation of the transverse pulley system is completed, acceptance and trial lifting are required to ensure that the structural connection is reliable.

[0042] S3: Remove the connections between Bailey supports and between Bailey supports and other structures. To ensure construction safety, the removal cannot be completed all at once, but should be done simultaneously with the removal of the Bailey supports.

[0043] S4: Horizontally dismantle the Bailey bracket 1, and the dismantling order is to dismantle them symmetrically from the outside to the inside. First, the horizontal bridge at the bottom of the cable tower beam 2 moves the pulley system wire rope 7 to the left and right sides to fix the same Bailey bracket 1, and move it horizontally out of the bottom of the cable tower beam 2; then, fix the left and right tower crane wire ropes of the cable tower 3 on the moved Bailey bracket 1, and remove the horizontal pulley system wire rope 7; finally, use the left and right tower cranes of the cable tower 3 to lower the Bailey bracket 1 to the ground.

[0044] Implementation project: The construction of the 5# main tower beam of Huajiang Gorge Bridge adopts a cast-in-place support system without ground support, which consists of inclined brackets, heavy-duty Bailey supports, distribution beams, buckle frames and formwork systems. Each Bailey support contains 7 4×2m standard Bailey plates and 1 2×1m special-shaped Bailey plate. Each one is 29m long and weighs 7.68t, which is "long and heavy". The lower beam is 94.5m above the ground, and the upper beam is 249.05m above the ground. A total of 33 heavy-duty Bailey supports are set on the lower beam (such as Figure 6As shown in the figure), the Bailey bracket can be installed by using a tower crane to lift it as a whole, but after the beam is cast, it is extremely difficult to remove it due to the small space.

[0045] The above system was implemented on the Huajiang Gorge Bridge. A hole was reserved on the beam. After the beam was cast and the buckle bracket was removed, the precision-rolled threaded hanging rod was installed through the reserved hole to fix the I56a horizontal lifting beam below. The dismantling horizontal pulley was installed on the hanging beam, and a set of horizontal pulley system was installed on both sides of the bridge. When in use, the horizontal pulleys on both sides fixed each Bailey bracket and moved it horizontally out of the bottom of the beam, and hoisted it to the ground as a whole using a tower crane.

[0046] The implementation has achieved the following application effects and economic benefits:

[0047] The transverse pulley system used to dismantle the Bailey bracket of the beam has the advantages of easy operation, high dismantling efficiency and safety. The key to this transverse system is to solve the problem of moving the Bailey truss beam horizontally out of the bottom of the beam at high altitude for easy lifting and dismantling. It has a good application effect and has broad promotion prospects.

[0048] Compared with conventional dismantling methods, the transverse pulley system used to dismantle the crossbeam Bailey bracket can save about 10 days of construction time and about 25,000 yuan in costs.

[0049] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes according to the technical solution and concept of the present application within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. A traverse pulley system for dismantling a crossbeam Bailey support, comprising a pylon crossbeam (2), characterized in that: The invention comprises a set of transverse pulley systems arranged on both sides of the bottom cross bridge of the cable tower cross beam (2), the transverse pulley system comprising a plurality of sets of anchors (4) pre-buried in the cable tower cross beam (2), the bottom of the anchors (4) being connected to a transverse suspension beam (5), a transverse pulley (6) being movably arranged on the transverse suspension beam (5), and the transverse pulley (6) being connected to a steel wire rope (7).

2. The traverse pulley system for removing the crossbeam Bailey bracket according to claim 1, characterized in that: The multiple sets of anchoring pieces (4) are arranged along the bridge direction, and one set of anchoring pieces (4) comprises two precision-rolled threaded hanging rods (41) or two precision-rolled threaded hook pieces (42).

3. The traverse pulley system for removing the crossbeam Bailey bracket according to claim 2, characterized in that: The precision-rolled threaded hanging rod (41) is inserted into the web cavity of the cable tower cross beam (2); and the precision-rolled threaded hook member (42) is pre-embedded in the solid web of the cable tower cross beam (2).

4. The traverse pulley system for removing the crossbeam Bailey bracket according to claim 3, characterized in that: The transverse suspension beam (5) comprises an upper transverse suspension beam flange (51) and a lower transverse suspension beam flange (52), and a transverse suspension beam vertical beam (53) is provided between the upper transverse suspension beam flange (51) and the lower transverse suspension beam flange (52).

5. The traverse pulley system for removing the crossbeam Bailey bracket according to claim 4, characterized in that: The fine-rolled threaded hanging bar (41) passes through the bottom plate of the cable tower cross beam (2) and the upper flange (51) of the transverse hanging beam. The upper and lower ends of the fine-rolled threaded hanging bar (41) are respectively connected to nuts (401). The nut (401) at the upper end is fastened to the top of the cavity bottom plate of the cable tower cross beam (2), and the nut (401) at the lower end is fastened to the bottom of the upper flange (51) of the transverse hanging beam.

6. The traverse pulley system for removing the crossbeam Bailey bracket according to claim 5, characterized in that: Two nuts (401) connected at the lower ends of two precision-rolled threaded suspension bars (41) belonging to a set of anchoring pieces (4) are respectively fastened to the left and right sides of the upper flange (51) of the transverse suspension beam.

7. The traverse pulley system for removing the crossbeam Bailey bracket according to claim 4, characterized in that: The lower end of the fine-rolled threaded hook member (42) is provided with an embedded sleeve (402) embedded in the cable tower cross beam (2); the embedded sleeve (402) is connected to the upper part of the fine-rolled threaded steel bar (404) arranged through the upper flange (51) of the transverse suspension beam; the lower part of the fine-rolled threaded steel bar (404) is connected to the fastening sleeve (403) fastened to the bottom of the upper flange (51) of the transverse suspension beam.

8. The traverse pulley system for removing the crossbeam Bailey bracket according to claim 7, characterized in that: Two fastening sleeves (403) arranged below each of two precision-rolled threaded hook members (42) belonging to a set of anchor members (4) are fastened to the left and right sides of the upper flange (51) of the transverse suspension beam, respectively.

9. The traverse pulley system for removing the crossbeam Bailey bracket according to any one of claims 4 to 8, characterized in that: A reserved hole (501) is provided on the upper flange (51) of the transverse suspension beam.

10. The traverse pulley system for removing the crossbeam Bailey bracket according to any one of claims 4 to 8, characterized in that: The transverse pulley (6) is suspended on the lower flange (52) of the transverse suspension beam and moves via a pulley (61).

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