Overhanging type special-shaped fastening device suitable for steel support

Abstract

An overhanging type special-shaped fastening device suitable for a steel support comprises a stand column, a cross beam, an overhanging type steel corbel, a support beam and a fastening piece, an overhanging type steel corbel cross beam is installed on the upper portion of the right side of the stand column, an overhanging type steel corbel supporting beam is installed on the lower portion of the overhanging type steel corbel cross beam, the support beam is installed on the upper surface of the cross beam, and the fastening piece is installed on the upper surface of the cross beam. The support beam is of an I-shaped structure, a fastener is installed on the lower portion of the support beam, and the fastener fixes the supporting beam. According to the utility model, the fastening piece is arranged, so that the bracket beam and the overhanging type bracket cross beam can be firmly fixed to be mounted in a crossed manner, and the situation that the welded channel steel needs to be cut off when the recyclable overhanging type steel bracket is used again due to welding, so that materials and working hours are wasted can be effectively avoided; the overhanging bracket can be repeatedly used, the construction cost is reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of deep foundation pit support, and in particular relates to a cantilever special-shaped fastening device suitable for steel support. Background Art

[0002] Steel support systems are widely used in deep foundation pit projects because they do not require maintenance, can be excavated after erection and prestressing is completed, and steel components are recyclable. Due to the force characteristics of the support in the steel support system, the steel support system is mainly in the form of a double-braced truss.

[0003] The distance between columns in the steel support system is large, and usually cantilevered steel brackets are used on the columns as the support points for the installation of the steel support system. The cantilevered steel brackets are fixed to the columns with bolts. During the installation process, the supporting steel beams in the steel support system are placed on the cross-shaped support beams that have been placed on the cantilevered steel brackets.

[0004] In the original construction process, before the support beam is placed crosswise with the two cantilever steel corbels, there is a channel steel fastened with bolts at each end of the support beam. Its function is to avoid direct contact between the recyclable support beam and the cantilever steel corbels. By welding the channel steel in contact with the cantilever steel corbels, a rigid connection between the channel steel and the cantilever steel corbels is achieved, thereby meeting the stability and safety of the support beam and the cantilever steel corbels.

[0005] However, there is an obvious disadvantage in this construction process. When the steel support system needs to remove the support beam and the cantilever steel corbel, since the channel steels at both ends of the support beam and the steel corbel are welded together, it is necessary to first remove the bolts on the support beam and the channel steel to completely separate the support beam from the cantilever steel corbel. However, the channel steel fixed by bolts on the original support beam is cross-welded with the cantilever steel corbel, and there are many unsafe factors in the loading and unloading process. In addition, before the next use of the recycled cantilever steel corbel, the welded channel steel needs to be cut off in advance (the damaged channel steel cut off is treated as scrapped parts), and then the uneven cantilever steel corbel end plate caused by the welding operation is smoothed, which increases the maintenance cost of the cantilever steel corbel and the cost of channel steel material loss. This not only wastes man-hours, but also leads to waste of resources.

[0006] Based on this, in order to ensure the reuse of cantilever corbel steel, reduce construction costs and improve construction efficiency, this design proposes a cantilever special-shaped fastening device suitable for steel supports. Utility Model Content

[0007] The utility model aims to provide a cantilevered special-shaped fastening device suitable for steel supports.

[0008] A cantilever special-shaped fastening device suitable for steel support, comprising: a column, a cantilever steel corbel cross beam, a cantilever steel corbel support beam, a bracket beam, and a fastener. A cantilever steel corbel cross beam is installed on the upper right side of the column, a cantilever steel corbel support beam is installed on the lower part of the cantilever steel corbel cross beam, the cantilever steel corbel cross beam and the cantilever steel corbel support beam are combined into a cantilever steel corbel, wherein the bracket beam is installed on the upper surface of the cross beam, the bracket beam structure is an "I" shape, and a fastener is installed on the lower part of the bracket beam, and the fastener fixes the bracket beam.

[0009] Preferably, the fastener comprises: a T-shaped end and an L-shaped end, the upper side of the T-shaped end is provided with a cross-riding long rod high-strength bolt hole, and the front of the L-shaped end is provided with a flat-push high-strength bolt hole.

[0010] Preferably, a cavity is provided at the front of the L-shaped end, a convex block is installed inside the cavity, a return spring is installed at the bottom of the convex block, and a limit clamp ring is installed at the bottom of the return spring.

[0011] Preferably, a cross-riding long-rod high-strength bolt is installed in the cross-riding long-rod high-strength bolt hole, and a flat-push full-thread high-strength bolt is installed in the flat-push high-strength bolt hole.

[0012] The beneficial effects of the above scheme are:

[0013] 1. The utility model can not only firmly fix the column support beam and the cantilever corbel cross beam in a cross-intersecting installation by arranging fasteners, but also effectively avoid the situation that the recyclable cantilever steel corbel needs to cut off the welded channel steel when it is reused due to welding, resulting in waste of materials and work hours. The cantilever corbel can be reused, thereby reducing construction costs and improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the installation structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the top view of the installation structure of the fastener of the utility model;

[0016] Figure 3 This is a schematic diagram of the main structure of the fastener of the utility model;

[0017] Figure 4 This is a left-side structural schematic diagram of the fastener of the utility model;

[0018] Figure 5 This is a schematic diagram of the top view of the fastener of the utility model;

[0019] Figure 6 This is a schematic diagram of the L-shaped end cross-sectional structure of the utility model;

[0020] Figure 7 This is a schematic diagram of the main structure of the convex block of the utility model;

[0021] Figure 8 This is a schematic diagram of the top view of the convex block structure of the utility model;

[0022] In the figure: 1. Column; 2. Cantilever steel corbel cross beam; 3. Cantilever steel corbel support beam; 4. Bracket beam; 5. Fastener; 51. Cross-riding long-rod high-strength bolt hole; 52. Push-type high-strength bolt hole; 53. Convex block; 54. Reset spring; 55. Limiting clamp; 56. L-shaped end; 57. T-shaped end; 58. Cavity; 6. Push-type full-thread high-strength bolt; 7. Cross-riding long-rod high-strength bolt. DETAILED DESCRIPTION

[0023] The present invention is further explained in detail below in conjunction with the accompanying drawings of the specification, but the protection scope of the present invention is not limited thereto.

[0024] according to Figures 1 to 8 As shown, a cantilever special-shaped fastening device suitable for steel support comprises: a column 1, a cantilever steel corbel beam 2, a cantilever steel corbel support beam 3, a bracket beam 4, and a fastener 5. The upper right part of the column 1 is equipped with a cantilever steel corbel beam 2, the lower part of the cantilever steel corbel beam 2 is equipped with a cantilever steel corbel support beam 3, the cantilever steel corbel beam 2 and the cantilever steel corbel support beam 3 are combined into a cantilever steel corbel, wherein the bracket beam 4 is installed on the upper surface of the beam, the bracket beam structure is an "I" shape, the lower part of the bracket beam 4 is equipped with a fastener 5, and the fastener 5 fixes the bracket beam 4;

[0025] During installation, the bottom of the support beam 4 is placed on the upper part of the cantilevered steel corbel cross beam 2 , and the bottom of the support beam 4 is fixed by a fastener 5 .

[0026] Specifically, the fastener 5 includes: a T-shaped end 57 and an L-shaped end 56, the upper side of the T-shaped end is provided with a cross-riding long rod high-strength bolt hole 51, the front of the L-shaped end 56 is provided with a push-type high-strength bolt hole 52, the front of the L-shaped end 56 is provided with a cavity 58, a convex block 53 is installed inside the cavity 58, a return spring 54 is installed at the lower part of the convex block 53, a limit clamping ring 55 is installed at the lower part of the return spring 54, a cross-riding long rod high-strength bolt 7 is installed in the cross-riding long rod high-strength bolt hole 51, and a push-type full-thread high-strength bolt 6 is installed in the push-type high-strength bolt hole 52.

[0027] When installing the fastener, the L-shaped end 56 of the fastener 5 will press the bottom of the support beam 4 tightly, and the flat-push full-thread high-strength bolt 6 will pass through the fastener 5. By tightening the flat-push full-thread high-strength bolt 6, the convex block 53 in the front of the L-shaped end 56 of the fastener 5 will press the support beam 4 downward, and at the same time, the cross-riding long-rod high-strength bolt 7 will pass through the fastener 5 to cross the cantilevered steel bracket cross beam 2. Figure 2 As shown, the two fasteners 5 are clamped along the direction of the support beam 4, and the T-shaped end 57 of the fastener is stuck in the upper part of the cantilever steel corbel cross beam 2 to ensure that the fastener 5 will not move up and down or left and right, which greatly improves the utilization rate of the cantilever steel corbel and avoids the damage to the cantilever steel corbel caused by traditional welding.

[0028] When the steel support is completed and needs to be dismantled, the specific steps of dismantling and recycling the cantilevered special-shaped fastening device are as follows:

[0029] First, use the lifting equipment to lift the steel support main beams placed on the support beam 4 in sections, so that they leave the support beam 4 one by one; use two steel wire ropes or slings on the lifting equipment that meet the lifting load weight requirements, fix them at appropriate positions on both sides of the support beam 4, and ensure that the support beam 4 can maintain a balanced state during lifting;

[0030] After the lifting equipment tightens the two steel wire ropes or slings on the support beam 4, arrange workers to remove the Figure 1 After all the high-strength bolts on the cantilever steel corbel beam 2 and the cantilever steel corbel support beam 3 are hingedly fixed on the column 1 shown, the lifting equipment lifts the support beam 4 and the two cantilever steel corbel beams 2 and the cantilever steel corbel support beam 3 which are cross-connected by fasteners 5 and place them on a safe flat ground nearby, and then the workers loosen all the cross-riding long-rod high-strength bolts 7 and the flat-push full-thread high-strength bolts 6 on the four fasteners 5, so that the fasteners 5 are completely detached from the support beam 4 and the cantilever steel corbel beam 2, thereby finally achieving the purpose of completely separating the support beam 4 from the cantilever steel corbel beam 2.

[0031] The lifting equipment then hoists the support beam 4 and the cantilever steel bracket to the transport vehicle, and recovers all the components of the cantilever special-shaped device for next installation and use.

[0032] Finally, it should be noted that the cantilevered special-shaped fastening device of the embodiment of the present invention has substantial characteristics and significant technical progress. The cantilevered I-beam special-shaped fastening device and its fixing method of the present invention are simple to operate, easy to assemble (disassemble), practical, and effective. With this reinforcement measure, workers can quickly master it during operation, improve work efficiency, and ensure safety; since this cantilevered special-shaped fastening device can be reused, it also saves construction costs.

[0033] The above embodiments are only for the purpose of illustrating the present invention, but not for limiting the present invention. A person skilled in the relevant technical field may make various equivalent transformations or changes and improvements without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also belong to the scope of the present invention, should be defined by the claims, and should be included in the protection scope of the present utility model.

Claims

1. A cantilever special-shaped fastening device suitable for steel support, comprising: A column (1), a cantilevered steel corbel cross beam (2), a cantilevered steel corbel support beam (3), a bracket beam (4), and a fastener (5). The upper right portion of the column (1) is provided with a cantilevered steel corbel cross beam (2), the lower portion of the cantilevered steel corbel cross beam (2) is provided with a cantilevered steel corbel support beam (3), the cantilevered steel corbel cross beam (2) and the cantilevered steel corbel support beam (3) are combined to form a cantilevered steel corbel, characterized in that the bracket beam (4) is installed on the upper surface of the cross beam, the bracket beam structure is an "I" shape, the lower portion of the bracket beam (4) is provided with a fastener (5), and the fastener (5) fixes the bracket beam (4).

2. A cantilevered special-shaped fastening device suitable for steel support as claimed in claim 1, characterized in that: The fastener (5) comprises a T-shaped end (57) and an L-shaped end (56); a cross-riding long-rod high-strength bolt hole (51) is provided on the upper side of the T-shaped end, and a flat-push high-strength bolt hole (52) is provided on the front of the L-shaped end (56).

3. A cantilevered special-shaped fastening device suitable for steel support as claimed in claim 2, characterized in that: A cavity (58) is provided at the front of the L-shaped end (56), a convex block (53) is installed inside the cavity (58), a return spring (54) is installed at the bottom of the convex block (53), and a limit clamping ring (55) is installed at the bottom of the return spring (54).

4. A cantilevered special-shaped fastening device suitable for steel support as claimed in claim 2, characterized in that: A cross-riding long-rod high-strength bolt (7) is installed in the cross-riding long-rod high-strength bolt hole (51), and a cross-pushing full-thread high-strength bolt (6) is installed in the horizontal push high-strength bolt hole (52).

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