Sliding unloading device for large-span wall top hinged support node connecting steel structure

Abstract

The utility model relates to the technical field of steel structure sliding construction, and particularly provides a large-span wall top hinged support node connection steel structure sliding unloading device which comprises a jacking device, a force conversion device and a sliding device. The jacking device comprises a jack and a gate-type bracket; the force conversion device comprises a steel structure cushion block and a support cushion block. The sliding device comprises a bearing beam and a sliding rail; the bearing beam is arranged on the wall top; the sliding track is paved above the bearing beam and the hinged support and is used for supporting the steel structure to slide; the gate-type support is arranged on the sliding device, and the jack is arranged on the gate-type support and used for jacking the steel structure. The steel structure cushion block is supported between the hinged support and the steel structure, the support cushion block is supported between the door-type support and the bearing beam, the steel structure sliding and unloading device enables the steel structure sliding and unloading construction to be more convenient and faster under the limited space of the wall top, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel structure sliding construction, and particularly relates to a sliding unloading device for connecting a steel structure with a hinged support node on a large-span wall. Background Art

[0002] Currently, when installing steel structures and steel grids using methods such as integral lifting, hoisting, or cumulative sliding, temporary support structures must be erected. Typically, after all welding and connection work on the main steel structure is complete, the temporary support structures need to be unloaded. Unloading releases the supporting forces, allowing the steel structure to ultimately achieve the required design stress state. However, when the construction area is located at the top of a wall, the unloading area is narrow and space-constrained, making traditional welded supports time-consuming, labor-intensive, and inconvenient to unload. Utility Model Content

[0003] In response to the problems existing in the above-mentioned existing construction technology, the utility model provides a sliding unloading device for connecting steel structures with large-span wall top hinge support nodes, which improves the efficiency of steel structure installation and saves construction time.

[0004] The utility model proposes a sliding unloading device for connecting a steel structure with a hinged support node at the top of a large span wall, comprising: a jacking device, a force conversion device and a sliding device; the jacking device comprises a jack and a gantry support; the force conversion device comprises a steel structure pad and a support pad; the sliding device comprises a pad beam and a sliding track; the pad beam is arranged at the top of the wall and is arranged on both sides of the hinged support at the top of the wall along the sliding direction of the steel structure; the sliding track is paved above the pad beam and the hinged support to support the sliding of the steel structure; the gantry support is arranged on the sliding device, and the jack is arranged on the gantry support to jack the steel structure; the steel structure pad is supported between the hinged support and the steel structure, and the support pad is supported between the gantry support and the pad beam.

[0005] Furthermore, the jacking device also includes a screw-nut assembly; the screw-nut assembly includes a screw and at least two nuts cooperating with the screw; the screw vertically penetrates the portal bracket, the bottom of the screw is connected to the pad beam, and at least one of the nuts is located below the portal bracket.

[0006] Furthermore, ear plates are provided on both sides of the portal bracket; the portal bracket straddles the sliding track, and the ear plates on both sides of the portal bracket are located on both sides of the sliding track; and the screw rod passes through the ear plates.

[0007] Furthermore, at least two nuts on the screw are clamped at the upper and lower ends of the ear plate.

[0008] Furthermore, grooves are provided on both sides of the upper end of the pad beam; the length direction of the grooves is arranged along the length direction of the sliding track; the lower end of the screw rod is located in the groove; and a nut on the screw rod is pressed against the upper end of the pad beam.

[0009] Furthermore, a reinforcing rib is provided at one end of the web of the cushion beam close to the hinge support.

[0010] Furthermore, a plurality of the reinforcing ribs are combined to form a frame structure.

[0011] Furthermore, the support pad is arranged inside the portal support.

[0012] The beneficial effects of the present invention are as follows: after the jack lifts the steel structure to a certain height, the steel structure pad is placed between the steel structure and the hinge support. After the jack unloads the force, the steel structure support is transformed from the jack to the steel structure pad, making it easier to remove the sliding track used to support the sliding of the steel structure. After the sliding track is removed, the bracket pad is inserted into the portal bracket. The jack lifts the steel structure to a certain height and removes the steel structure pad. The force system of the steel structure is transferred from the steel structure pad to the portal bracket and the bracket pad. After the jack unloads the force, the steel structure falls smoothly onto the hinge support. The present invention's steel structure sliding unloading device makes the sliding and unloading construction of steel structures in confined spaces on the top of walls more convenient and quick, thereby improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural diagram of a portal bracket for connecting a steel structure sliding unloading device with a hinged support node on a large-span wall according to the present invention;

[0014] Figure 2 This is a structural diagram of the screw and nut assembly of the utility model;

[0015] Figure 3 This is a structural diagram of the cushion beam of the utility model;

[0016] Figure 4 This is a structural diagram of the steel structure pad of the utility model;

[0017] Figure 5 This is a structural diagram of the support pad of the utility model;

[0018] Figure 6 This is a schematic structural diagram of the jack of the utility model;

[0019] Figure 7 This is a schematic diagram of the installation position of the cushion beam of the utility model;

[0020] Figure 8 This is a structural diagram of the utility model after the sliding track is installed on the cushion beam;

[0021] Figure 9 This is a schematic diagram of the structure of the steel structure on the sliding track of the present invention after it slides into place;

[0022] Figure 10 for Figure 9 A schematic diagram of a structure in which a portal bracket is installed above the sliding track;

[0023] Figure 11 for Figure 10 A schematic diagram of a structure in which a jack is installed on a gantry support;

[0024] Figure 12 This is a schematic diagram of the utility model of using a jack to lift a steel structure and complete the installation of a steel structure pad;

[0025] Figure 13 for Figure 12 Schematic diagram of the middle slip track after it is pulled out;

[0026] Figure 14 for Figure 13 Schematic diagram of a bracket block installed in a mid-door bracket;

[0027] Figure 15 for Figure 14 Schematic diagram of unloading and placement of the steel structure;

[0028] Figure 16 This is a schematic diagram of the completion of the steel structure unloading construction in this utility model.

[0029] In the figure: 1-lifting device; 2-conversion force device; 3-sliding device;

[0030] 1.1-Jack; 1.2-Gateway bracket; 1.3-Screw and nut assembly;

[0031] 2.1-Steel structure pad; 2.2-Bracket pad;

[0032] 3.1- Pad beam; 3.2- Sliding track. DETAILED DESCRIPTION

[0033] The following is a further detailed description of this application with reference to the accompanying drawings and specific implementations:

[0034] like Figures 1-16The shown device is a sliding unloading device for connecting a steel structure with a large-span wall top hinge support node, comprising a jacking device 1, a force conversion device 2, and a sliding device 3. The jacking device 1 comprises a jack 1.1, a gantry support 1.2, and a screw-nut assembly 1.3. The jack 1.1 plays a major role in the unloading process of the steel structure and can lift the steel structure. The jack 1.1 is placed on the gantry support 1.2, the gantry support 1.2 is placed on the sliding device 3, and the screw-nut assembly 1.3 connects the gantry support 1.2 with the sliding device 3, providing a solid foundation for the lifting of the steel structure. It should be noted that the steel structure includes a steel column and a steel beam connected to both sides of the steel column; the bottom of the steel beam is higher than the bottom of the steel column; the steel column is located on the hinge support, and the jack 1.1 is supported below the steel beam.

[0035] The force conversion device 2 includes: a steel structure pad 2.1 and a bracket pad 2.2. The steel structure pad 2.1 is placed between the steel structure and the hinge support when the jack 1.1 lifts the steel structure to a certain height, and serves to transform the force-bearing system from the lifting device 1 to the force conversion device 2. The bracket pad 2.2 is placed inside the gantry 1.2 after the screw-nut assembly 1.3 lifts the gantry 1.2 and the jack 1.1 to a certain height and removes the sliding track 3.2. After placement, the gantry 1.2 is lowered via the screw-nut assembly 1.3. At this time, the force-bearing device of the gantry 1.2 changes from the original sliding track 3.2 to the bracket pad 2.2, providing sufficient space for unloading the steel structure.

[0036] The sliding device 3 includes a cushion beam 3.1 and a sliding track 3.2. The cushion beam 3.1 is placed on the top of the wall and welded to the embedded parts on the top of the wall. The cushion beam 3.1 is kept horizontal during placement. The end of the cushion beam 3.1 has a groove specifically for accommodating the portal bracket 2.2. The sliding track 3.2 is placed on the cushion beam 3.1 and welded.

[0037] The specific usage is as follows:

[0038] First, the on-site hydraulic jack 1.1 controller starts the motor to lift the steel structure to a certain height. During this period, there must be someone watching near each hydraulic jack 1.1 to ensure that no accidents occur.

[0039] Afterwards, the on-site workers placed the steel structure pad 2.1 between the steel structure and the hinge support, and the operator controlling the hydraulic jack 1.1 unloaded the force on the jack 1.1, allowing the steel structure pad 2.1 to bear the deadweight of the steel structure.

[0040] Then, the screw-nut assembly 1.3 is used to lift the gantry bracket 1.2 by rotating the screw-nut assembly 1.3. At this time, the sliding track 3.2 is not subjected to force, and the sliding track 3.2 can be pulled out. The specific steps of using the screw-nut assembly 1.3 to lift the gantry bracket 1.2 are as follows: the screw of the screw-nut assembly 1.3 is connected to the pad beam 3.1, and the nuts can be clamped at the upper and lower ends of the pad beam 3.1 to limit the vertical displacement of the screw. The nuts under the ear plates on both sides of the gantry bracket 1.2 are rotated to make the nuts rise along the screw, thereby lifting the gantry bracket 1.2. It should be noted that during this process, the steel structure pad 2.1 bears the deadweight of the steel structure, and the gantry bracket 1.2 is not subjected to the pressure of the steel structure.

[0041] After the sliding track 3.2 is pulled out, the support pad 2.2 is placed inside the portal support 1.2, and the steel structure pad 2.1 is pulled out after the jack 1.1 lifts the steel structure to a certain height.

[0042] Finally, the jack 1.1 unloads the force, allowing the steel structure to fall smoothly on the hinge support. At this point, the main work is completed, and temporary measures such as the pad beam 3.1, gantry bracket 1.2, jack 1.1, bracket pad 2.2, screw and nut assembly 1.3 need to be removed, and the construction is completed.

[0043] The above are only preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be pointed out that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A sliding unloading device for connecting steel structures at the top hinge support nodes of large-span walls, characterized in that: include: A jacking device, a force conversion device and a sliding device; the jacking device includes a jack and a gantry support; the force conversion device includes a steel structure pad and a support pad; the sliding device includes a pad beam and a sliding track; the pad beam is set on the top of the wall and is arranged on both sides of the hinge support at the top of the wall along the sliding direction of the steel structure; the sliding track is paved above the pad beam and the hinge support to support the sliding of the steel structure; the gantry support is set on the sliding device, and the jack is set on the gantry support to jack the steel structure; the steel structure pad is supported between the hinge support and the steel structure, and the support pad is supported between the gantry support and the pad beam.

2. The sliding unloading device for connecting steel structures with top hinged support nodes of large-span walls according to claim 1 is characterized in that: The jacking device also includes a screw-nut assembly; the screw-nut assembly includes a screw and at least two nuts that cooperate with the screw; the screw vertically penetrates the portal bracket, the bottom of the screw is connected to the pad beam, and at least one nut is located below the portal bracket.

3. The sliding unloading device for connecting steel structures with top hinged support nodes of large-span walls according to claim 2 is characterized in that: Ear plates are provided on both sides of the portal bracket; the portal bracket straddles the sliding track, and the ear plates on both sides of the portal bracket are located on both sides of the sliding track; the screw rod passes through the ear plates.

4. The sliding unloading device for connecting steel structures with top hinged support nodes of large-span walls according to claim 3 is characterized in that: At least two nuts on the screw are clamped at the upper and lower ends of the ear plate.

5. The sliding unloading device for connecting steel structures with hinged support nodes at the top of a large-span wall according to claim 2 is characterized in that: The upper end of the cushion beam is located on both sides of the sliding track and is provided with grooves; the length direction of the groove is arranged along the length direction of the sliding track; the lower end of the screw rod is located in the groove; a nut on the screw rod is pressed against the upper end of the cushion beam.

6. The sliding unloading device for connecting steel structures with hinged support nodes at the top of a large-span wall according to claim 1 is characterized in that: A reinforcing rib is provided on one end of the web of the cushion beam close to the hinge support.

7. The sliding unloading device for connecting steel structures with top hinged support nodes of large-span walls according to claim 6 is characterized in that: A plurality of the reinforcing ribs are combined to form a frame structure.

8. The sliding unloading device for connecting steel structures with top hinged support nodes of large-span walls according to claim 1 is characterized in that: The support pad is arranged inside the portal support.

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