Temporary supporting device for steel box girder

Abstract

The utility model provides a temporary supporting device for a steel box girder, which is used as a temporary support for a diaphragm plate when the diaphragm plate is welded in the steel box girder, is arranged in the steel box girder and is positioned on one side of the diaphragm plate, and comprises a supporting seat, a supporting rod and a supporting rod, the supporting assembly is arranged on the supporting column, synchronously moves along with the supporting column, drives an extension column with a supporting plate to linearly ascend and descend in the height direction of the supporting column through a pushing mechanism and is used for adjusting the height position of the supporting plate, the supporting plate is exposed, and at least one side plate face is provided with an anti-skid structure. The height position of the supporting plate can be kept through locking of a locking mechanism in the supporting assembly. And the supporting column is arranged on the supporting seat in a manner of swinging around a swinging shaft at the bottom of the supporting column, and swings towards the plate surface of the diaphragm plate by virtue of external force, so that the plate surface with the anti-skid structure of the supporting plate is propped against the plate surface of the diaphragm plate on the side where the supporting plate is located. Welding is not needed between the steel box girder and the diaphragm plate, and implementation is convenient and flexible.

Description

Technical Field

[0001] The utility model relates to the field of bridge construction, in particular to a temporary supporting device for a steel box beam. Background Art

[0002] Steel box girder is a common bridge structure with internal diaphragms, which not only provide support during initial construction, but also increase the rigidity of the beam, prevent deformation, improve the vibration characteristics of the bridge, enhance the bridge's bearing capacity and stability, and improve safety during bridge use.

[0003] When welding the diaphragm, it is usually necessary to weld a steel section between the diaphragm and the steel box beam as a temporary support. If the temporary support is forcibly removed after welding, it will cause damage to the structure. The temporary support formed by welding is inconvenient to adjust and has low flexibility. Utility Model Content

[0004] In order to solve the above technical problems, the utility model proposes a temporary support device for steel box beams, in order to replace the traditional support method through welding steel sections, and serve as a temporary support when welding diaphragms. No welding is required between the diaphragms and the steel box beams, and the implementation is convenient and flexible.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A temporary support device for a steel box beam, which has the structural characteristics of being placed inside the steel box beam and located on one side of the diaphragm as a temporary support for the diaphragm when the diaphragm is welded inside the steel box beam, and comprising:

[0007] The support seat is placed on the bottom plate of the steel box girder;

[0008] A support assembly is arranged on the pillar and moves synchronously with the pillar. The extension column with the support plate is driven to rise and fall linearly along the height direction of the pillar by a push mechanism to adjust the height position of the support plate. The support plate is exposed and at least one side of the plate surface has an anti-slip structure. The height position of the support plate can be maintained by locking the locking mechanism in the support assembly.

[0009] The pillar is swingably arranged on the support seat around the swing axis through the adapter seat at the bottom of the pillar, and the swing axis is parallel to the bottom plate. The pillar swings toward the surface of the diaphragm by relying on external force, driving the support assembly to swing synchronously, so that the support plate with the plate surface with anti-slip structure contacts the surface of the diaphragm on the side, forming a temporary support for the diaphragm.

[0010] The structural features of the utility model also lie in:

[0011] The pillar is formed with a pillar inner cavity which penetrates upwards, the support assembly is arranged in the pillar inner cavity of the pillar, the upper end of the extended pillar is exposed, and the support plate is arranged on the top of the pillar.

[0012] In the support assembly:

[0013] The push mechanism includes a driving device and a spring. The driving device outputs linear motion, and the output end and the bottom of the extension column are tensioned by a spring arranged along the height direction of the column through deformation direction;

[0014] The locking mechanism comprises a locking rod and a locking block, wherein the lower end of the extension column is formed with a sliding groove that passes downward, and the locking rod slides upward and is arranged in the sliding groove of the extension column, and the top of the rod and the bottom of the sliding groove are always vertically empty, and the lower end is connected to the output end of the driving device, and the rod section extending into the sliding groove forms a wedge-shaped block structure. The inclined surface of the wedge-shaped block structure is erected, and together with the side wall of the pillar it faces, a locking channel with a width that gradually decreases downward is formed, and the locking block is horizontally placed in the locking channel, one end of which contacts the inclined surface of the wedge-shaped block structure, and the other end initially retains a spacing with the side wall of the pillar, and can move upward with the upward movement of the locking rod relying on the friction force between the inclined surface, until the other end conflicts with the side wall of the pillar, and is horizontally supported in the locking channel, forming a lock for the current height position of the extension column, and by conflicting with the limit surface formed on the extension column just above, an upper limit position for the upward movement of the locking block is formed;

[0015] An extension column, a lower end portion and a locking rod section at the same height together form a limiting structure, the limiting structure includes a limiting groove that passes horizontally through the extension column, and also includes a limiting block that protrudes laterally on the locking rod, the limiting block extends horizontally in the limiting groove, and initially leaves space between the top and bottom of the limiting groove, and moves upward with the upward movement of the locking rod until it contacts the top of the limiting groove, thereby limiting the upward displacement of the locking rod relative to the extension column.

[0016] The driving device is a hydraulic rod.

[0017] The adapter seat is fixed on the upper end of the support seat, forming an adapter inner cavity, which penetrates upward and along the swing direction of the pillar. An axial hole is arranged in the cavity, and the swing shaft is rotatably arranged in the axial hole and connected to the bottom of the pillar.

[0018] The anti-skid structure on the support plate is a plurality of anti-skid protrusions on the plate surface that are perpendicular to the plate surface and convex and are distributed at equal intervals. The cross-section of the anti-skid protrusion is in the shape of a triangular prism with the tip facing outward for contacting the surface of the diaphragm plate.

[0019] Compared with the prior art, the beneficial effects of the utility model are embodied in:

[0020] The utility model can be used for the temporary support of the single-side plate surface of the diaphragm plate, without welding with the steel box girder and the diaphragm plate. The whole device is placed in the steel box girder through the support seat, so that the support column and the support component are arranged towards the plate surface of the diaphragm plate on the side where the device is located. Then, the extension column and the support plate thereon are pushed by the jacking mechanism to make the side plate surface with the anti-slip structure contact with the diaphragm plate. This contact posture can be maintained by the locking of the locking mechanism. After the welding of the diaphragm plate is completed, the device can be reset, taken out or transferred to the next working station for reuse. Since the welding link of the traditional temporary support form is omitted, the construction operation of the temporary support is simplified, the construction difficulty is reduced, and the hidden danger of damage to the steel box girder structure caused by welding and the difficulty of demolition after welding is eliminated. The device is easy to adjust and has flexible operation, which is beneficial to the control of construction costs. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the utility model;

[0022] Figure 2 is a schematic structural diagram of the support component in the inner cavity of the support column;

[0023] Figure 3 is a sectional structural diagram of the support column and the support component;

[0024] Figure 4 is a partial structural diagram at the locking block;

[0025] Figure 5 is a partial structural diagram at the limiting structure.

[0026] In the figure:

[0027] 1 Support seat;

[0028] 2 Adapter seat; 21 Adapter inner cavity; 22 Swing shaft;

[0029] 3 Support component; 31 Driving device; 32 Spring; 33 Extension column; 331 Chute; 332 Limiting surface; 333 Limiting groove; 34 Locking rod; 341 Inclined surface; 342 Locking channel; 343 Limiting block; 35 Locking block; 36 Support plate; 361 Anti-slip protrusion;

[0030] 4 Support column; 41 Column inner cavity. Detailed Embodiment

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0032] Please refer to Figures 1 to 5 , the temporary steel box girder support device of this embodiment is used as a temporary support for the diaphragm when welding the diaphragm inside the steel box girder. It is placed inside the steel box girder and on one side of the diaphragm, and includes:

[0033] The support base 1 is placed on the bottom plate of the steel box girder;

[0034] The support assembly 3 is arranged on the support column 4 and moves synchronously with the support column 4. The extension column 33 with the support plate 36 is driven by a pushing mechanism to linearly lift along the height direction of the support column 4 for adjusting the height position of the support plate 36. The support plate 36 is exposed, and at least one side plate surface has an anti-slip structure. The height position of the support plate 36 can be maintained by the locking of the locking mechanism in the support assembly 3;

[0035] The support column 4 is swingably arranged on the support base 1 through a transfer seat 2 around a swing axis 22 at the bottom of the column. The swing axis 22 is parallel to the bottom plate. The support column 4 swings towards the diaphragm plate surface by external force, driving the support assembly 3 to swing synchronously, so that the support plate 36 abuts against the diaphragm plate surface on the corresponding side with the plate surface having an anti-slip structure, forming a temporary support for the diaphragm.

[0036] In specific implementation, the corresponding structural settings of this temporary steel box girder support device also include:

[0037] The support column 4 is formed with a column inner cavity 41 that penetrates upward. The support assembly 3 is disposed through the column inner cavity 41 of the support column 4. The upper end of the extension column 33 is exposed, and the support plate 36 is arranged at the column top.

[0038] In the support assembly 3:

[0039] The pushing mechanism includes a driving device 31 and a driving device 32. The driving device 31 outputs linear motion, and the output end is tensioned with the bottom of the extension column 33 through the driving device 32 whose deformation direction is arranged along the height direction of the support column 4;

[0040] The locking mechanism includes a locking rod 34 and a locking block 35. A downwardly penetrating sliding groove 331 is formed at the lower end of the extension column 33. The locking rod 34 slides upwardly through the sliding groove 331 of the extension column 33. There is always a vertical gap between the top of the rod and the bottom of the sliding groove 331. The lower end is connected to the output end of the driving device 31. The rod section extending into the sliding groove 331 forms a wedge-shaped block structure. The inclined surface 341 of the wedge-shaped block structure is erected, and a locking channel 342 with a gradually narrowing width downward is jointly formed between the inclined surface 341 and the side wall of the facing support column 4. The locking block 35 is horizontally placed in the locking channel 342. One end is in contact with the inclined surface 341 of the wedge-shaped block structure, and there is an initial gap between the other end and the side wall of the support column 4. It can move upward by relying on the frictional force with the inclined surface 341 as the locking rod 34 moves upward until the other end abuts against the side wall of the support column 4 and horizontally braces in the locking channel 342 to form a lock on the current height position of the extension column 33. By abutting against the limiting surface 332 formed on the extension column 33 directly above, an upper limit for the upward movement of the locking block 35 is formed.

[0041] The extension column 33 and the rod section of the locking rod 34 at the same height jointly form a limiting structure. The limiting structure includes a horizontally penetrating limiting groove 333 on the extension column 33 and a horizontally protruding limiting block 343 on the locking rod 34. The limiting block 343 horizontally extends into the limiting groove 333. Initially, there are gaps between the limiting block 343 and the top and bottom of the limiting groove 333. As the locking rod 34 moves upward, it moves upward until it abuts against the top of the limiting groove 333, forming a limit on the upward displacement of the locking rod 34 relative to the extension column 33.

[0042] The driving device 31 is a hydraulic rod, and the execution end is fixedly connected to the lower rod end of the locking rod. The driving device 32 is sleeved on the locking rod and is tensioned between the execution end of the hydraulic rod and the bottom end of the extension column 33.

[0043] The adapter seat 2 is fixedly arranged at the upper end of the support seat 1 and forms an adapter inner cavity 21. The adapter inner cavity 21 penetrates upward and along the swinging direction of the support column 4. A shaft hole is arranged in the cavity, and the swinging shaft 22 is rotatably arranged in the shaft hole and is connected to the bottom of the support column 4.

[0044] The support seat 1 and the adapter seat 2 are integrally in an inverted "T" shape.

[0045] The anti-slip structure on the support plate 36 is multiple anti-slip protrusions 361 that protrude perpendicularly to the plate surface on the plate surface and are equally spaced. The cross-section of the anti-slip protrusions 361 is in a triangular prism shape with the tip facing outward and is used to contact the surface of the cross partition. The support plate 36 and the extension column 33 can be detachably assembled by a threaded connection form, enabling the support plate 36 to be replaced.

[0046] The devices can be used in pairs or in combinations of more, configured as required. For each temporary support device for steel box girders, the usage method can refer to the following examples:

[0047] Step 1: Place the device on the bottom plate inside the steel box girder, make the swing shaft 22 parallel to the surface of the diaphragm plate, and adjust the distance between the device and the diaphragm plate as required.

[0048] Step 2: Rely on external force to push the support column 4, and swing the support assembly 3 towards the diaphragm together, so that the side of the support plate 36 with the anti-slip structure faces the diaphragm.

[0049] Step 3: Drive by the pushing mechanism, so that the extension column 33 extends outward along the height direction of the support column 4. Use the pushing of the pushing mechanism to make the support plate 36 contact the surface of the diaphragm on the corresponding side with the side plate with the anti-slip structure, forming an auxiliary support for the diaphragm. At this time, the locking mechanism locks to maintain the current position of the auxiliary extension column 33.

[0050] In Step 3, the specific action of the support assembly 3 is that the driving device 31 outputs a linear motion, and the output end pushes the driving device 32 along the height direction of the support column 4. After the driving device 32 is pressed, it acts on the bottom end of the extension column 33 through the driving device 32, pushing the extension column 33 to extend outward, so that the side plate of the support plate 36 with the anti-slip structure contacts the surface of the diaphragm on the corresponding side. Then the driving device 31 continues to act. Due to the obstruction of the diaphragm, the extension column 33 stops moving, and the locking rod 34 continues to move along the height direction of the support column 4 in the chute 331 until the locking block 35 is driven by the inclined surface 341 of the wedge-shaped structure to the other end and contacts the side wall of the support column 4, straddling in the locking channel 342 to form an auxiliary lock for the current position of the extension column 33.

[0051] Furthermore, in Step 3, when the locking block 35 of the locking structure moves upward with the movement of the locking rod 34, the displaceable amount is restricted by the limiting structure. When the limiting hole block moves upward with the locking rod 34 and moves upward to contact the top of the limiting groove 333, the locking block 35 will stop moving upward to avoid structural damage caused by excessive displacement of the locking block 35 and affecting the locking effect.

[0052] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A temporary support device for a steel box girder, characterized in that, As a temporary support for the diaphragm when the diaphragm is welded inside the steel box girder, it is placed inside the steel box girder, on one side of the diaphragm, and includes: The support seat is placed on the bottom plate of the steel box girder; A support assembly is arranged on the pillar and moves synchronously with the pillar. The extension column with the support plate is driven to rise and fall linearly along the height direction of the pillar by a push mechanism to adjust the height position of the support plate. The support plate is exposed and at least one side of the plate surface has an anti-slip structure. The height position of the support plate can be maintained by locking the locking mechanism in the support assembly. The pillar is swingably arranged on the support seat around the swing axis through the adapter seat at the bottom of the pillar, and the swing axis is parallel to the bottom plate. The pillar swings toward the surface of the diaphragm by relying on external force, driving the support assembly to swing synchronously, so that the support plate with the plate surface with anti-slip structure contacts the surface of the diaphragm on the side, forming a temporary support for the diaphragm.

2. The temporary support device for steel box girders according to claim 1, characterized in that: The pillar is formed with a pillar inner cavity which penetrates upwards, the support assembly is arranged in the pillar inner cavity of the pillar, the upper end of the extended pillar is exposed, and the support plate is arranged on the top of the pillar.

3. The temporary support device for steel box girders according to claim 1 or 2, characterized in that, In the support assembly: The push mechanism includes a driving device and a spring. The driving device outputs linear motion, and the output end and the bottom of the extension column are tensioned by a spring arranged along the height direction of the column through deformation direction; The locking mechanism comprises a locking rod and a locking block, wherein the lower end of the extension column is formed with a sliding groove that passes downward, and the locking rod slides upward and is arranged in the sliding groove of the extension column, and the top of the rod and the bottom of the sliding groove are always vertically empty, and the lower end is connected to the output end of the driving device, and the rod section extending into the sliding groove forms a wedge-shaped block structure. The inclined surface of the wedge-shaped block structure is erected, and together with the side wall of the pillar it faces, a locking channel with a width that gradually decreases downward is formed, and the locking block is horizontally placed in the locking channel, one end of which contacts the inclined surface of the wedge-shaped block structure, and the other end initially retains a spacing with the side wall of the pillar, and can move upward with the upward movement of the locking rod relying on the friction force between the inclined surface, until the other end conflicts with the side wall of the pillar, and is horizontally supported in the locking channel, forming a lock for the current height position of the extension column, and by conflicting with the limit surface formed on the extension column just above, an upper limit position for the upward movement of the locking block is formed; An extension column, a lower end portion and a locking rod section at the same height together form a limiting structure, the limiting structure includes a limiting groove that passes horizontally through the extension column, and also includes a limiting block that protrudes laterally on the locking rod, the limiting block extends horizontally in the limiting groove, and initially leaves space between the top and bottom of the limiting groove, and moves upward with the upward movement of the locking rod until it contacts the top of the limiting groove, thereby limiting the upward displacement of the locking rod relative to the extension column.

4. The temporary support device for steel box girder according to claim 3, characterized in that: The driving device is a hydraulic rod.

5. The temporary support device for the steel box girder according to claim 1, characterized in that: The adapter seat is fixed on the upper end of the support seat, forming an adapter inner cavity, which penetrates upward and along the swing direction of the pillar. An axial hole is arranged in the cavity, and the swing shaft is rotatably arranged in the axial hole and connected to the bottom of the pillar.

6. The temporary steel box girder support device according to claim 1, characterized in that: The anti-skid structure on the support plate is a plurality of anti-skid protrusions on the plate surface that are perpendicular to the plate surface and convex and are distributed at equal intervals. The cross-section of the anti-skid protrusion is in the shape of a triangular prism with the tip facing outward for contacting the surface of the diaphragm plate.

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