Hanging system for pre-installing damper at top of antenna tower crown

Abstract

The utility model relates to the technical field of connection of common building structures, and discloses a hanging system for pre-installing a damper at the top of an antenna tower crown, which is characterized in that a section at the top of the antenna tower crown is emptied, and the damper is hung in a hollow section, so that the damper is pre-installed at the top of the antenna tower crown. The end socket is used for ensuring that the damper can be sealed while the antenna tower crown is assembled, special sealing equipment does not need to be additionally prepared, the hanging frame, the universal suspension and the lifting lug higher than the damper are used for ensuring that the posture of the damper is controllable in the hoisting process of the antenna tower crown, and the posture after hoisting is needed. The above points are combined to ensure that the damper can be assembled in the antenna tower crown in the prefabrication process of the antenna tower crown, and the antenna tower crown can be normally used after being installed.

Description

Technical Field

[0001] The utility model relates to the technical field of connection of general building structures, in particular to a hanging system for pre-installing a damper on the top of an antenna tower crown. Background Art

[0002] The tower crown, as the name implies, is the "hat" of a tower-type high-rise building, set on the top of the building for decoration. The antenna tower crown is a type of tower crown, which has the functions of both a tower crown and an antenna.

[0003] The main body of the antenna tower crown is one or more steel structure columns set on the base, sometimes with some beams. Due to the large wind load on the top of high-rise buildings, the antenna tower crown needs to be equipped with a series of prestressed cables and other structures to resist the wind. Sometimes it is difficult to resist the wind load by the structure alone, and dampers need to be used in conjunction. The commonly used damper in buildings is the tuned mass damper (TMD damper), which is characterized by a heavy counterweight. If used for the antenna tower crown, it is usually set at the bottom of the antenna or even inside the building.

[0004] However, with the development of modern fluid mechanics technologies such as CFD, the vibration caused by wind load on antenna tower crowns has been studied more thoroughly. Taking the tower crown of the Hytera Global Headquarters Building involved in the utility model as an example, with the help of CFD technology and wind tunnel, the amplitude of wind-induced vibrations at different positions and possible extreme conditions can be accurately calculated, so that dampers can be set in a targeted manner. It is calculated that the damper is set at the position with the largest amplitude (the antenna tower crown is not a rigid structure, and the position with the largest amplitude is not necessarily the top, but may also be the middle, but the top is the most likely and the most difficult to install), and with the frequency-adjustable eddy current damper, the volume of the damper can be greatly reduced, so that the installation of the damper can theoretically be integrated with the assembly of the building tower crown, and no longer needs to be installed separately.

[0005] However, there is no corresponding supporting component in the prior art that can meet the requirements of integrating the installation of the damper with the assembly of the building tower crown, and there is no precedent for connection, protection, and installation. Utility Model Content

[0006] The utility model provides a hanging system for pre-installing a damper on the top of an antenna tower crown.

[0007] The technical problem to be solved is: with the development of technology, the installation of the damper can theoretically be integrated with the assembly of the building tower crown, but there is no corresponding supporting component in the prior art that can meet the requirements of integrating the installation of the damper with the assembly of the building tower crown.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions: a hanging system for pre-installing a damper on the top of an antenna tower crown, which is used to pre-install a TMD damper in the antenna tower crown before the antenna tower crown is installed, the antenna tower crown includes a base and an antenna steel column vertically inserted in the base, the top of the antenna steel column has a hollow structure, which is recorded as the antenna hollow section, and the TMD damper is arranged in the antenna hollow section through the hanging system;

[0009] The bottom of the hollow section of the antenna is provided with a hollow section bottom plate fixedly connected to the inner wall of the hollow section of the antenna, and the top is provided with a head for quickly closing the hollow section of the antenna after the TMD damper is pre-set. The hanging system includes a hanger fixed on the top of the inner side of the hollow section of the antenna, and a universal suspension extending downward from the hanger. The TMD damper is hung in the closed cavity of the hollow section of the antenna through the universal suspension.

[0010] Furthermore, the bracket includes an angle steel horizontally welded to the inner wall of the hollow section of the antenna, and a channel steel beam with two ends respectively placed on the angle steel and fixed by bolts.

[0011] Furthermore, the universal suspension is a suspension rod whose upper end is connected to the channel steel beam through a spherical bearing and whose lower end is screwed to the TMD damper. The suspension rod is coaxially arranged with the central axis of the antenna steel column.

[0012] Furthermore, the universal suspension is three slings symmetrically arranged with the central axis of the antenna steel column as the symmetry axis, the upper ends of the three slings are connected to the channel steel beam through the same lifting ring, and the lower ends are connected to the TMD damper through three different lifting rings.

[0013] Furthermore, the sealing head is a flat-bottomed sealing head with an inner diameter larger than an outer diameter of the hollow section of the antenna, and is detachably fixedly connected to the hollow section of the antenna.

[0014] Furthermore, lifting ears for keeping the hollow section of the antenna in a vertical state during the lifting process are symmetrically welded on the outer wall of the hollow section of the antenna with the central axis of the antenna steel column as the symmetry axis.

[0015] Furthermore, the TMD damper is an eddy current damper.

[0016] Compared with the prior art, the utility model of a suspension system for pre-installing a damper on the top of an antenna tower crown has the following beneficial effects:

[0017] In the utility model, a section of the top of the antenna tower crown (the position where the antenna tower crown is most likely to have the largest amplitude) is hollowed out, and the damper is hung in the hollow section. The head is used to ensure that the damper can be sealed while the antenna tower crown is assembled, and no special sealing equipment is required. The hanger, universal suspension, and hanging ears higher than the damper are used to ensure that the damper can be controlled in the process of hoisting the antenna tower crown, and the posture after hoisting is required. The above points are combined to ensure that the damper can be assembled into the antenna tower crown during the prefabrication process of the antenna tower crown, and the antenna tower crown can be used normally after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a structure of a hanging system for pre-installing a damper on the top of an antenna tower crown according to the utility model;

[0019] Figure 2 It is a schematic diagram of another structure of a hanging system for pre-installing a damper on the top of an antenna tower crown according to the utility model;

[0020] In the figure, 1-antenna hollow section, 2-hollow section bottom plate, 3-head, 4-hanging bracket, 5-universal suspension, 6-TMD damper, 7-lifting ear. DETAILED DESCRIPTION

[0021] Take the damper of the crown of the Hytera Global Headquarters Building as an example. Figure 1-2 As shown, a suspension system for pre-installing a damper on the top of an antenna tower crown is used to pre-install a TMD damper 6 in the antenna tower crown before the antenna tower crown is installed. The antenna tower crown includes a base and an antenna steel column vertically inserted in the base. The top of the antenna steel column has a hollow structure, which is recorded as an antenna hollow section 1. The TMD damper 6 is set in the antenna hollow section 1 through the suspension system;

[0022] Usually, the antenna steel column is hollow, but it has a series of internal components such as ribs and partitions. There should be no internal components in the hollow section 1 of the antenna. If the strength of this section is insufficient due to the lack of internal components, it can be reinforced by adding an outer sleeve on the outside or an inner sleeve on the inside. At the same time, the side sealing and anti-corrosion conditions must be strictly checked, and there must be no air leakage or paint film damage.

[0023] The bottom of the antenna hollow section 1 is provided with a hollow section bottom plate 2 fixedly connected to the inner wall of the antenna hollow section 1, and the top is provided with a head 3 for quickly closing the antenna hollow section 1 after the TMD damper 6 is pre-installed. The hanging system includes a hanger 4 fixed to the top of the inner side of the antenna hollow section 1, and a universal suspension 5 extending downward from the hanger 4. The TMD damper 6 is hung in the closed cavity of the antenna hollow section 1 through the universal suspension 5.

[0024] The connection between the head 3 and the antenna hollow section 1 here needs to be a detachable connection method such as spot welding or bolting, and not full welding, otherwise it will be difficult to disassemble the head 3 if the TMD damper 6 needs to be adjusted later. The head 3 is usually a thin plate, which is not favorable in terms of force, so the bracket 4 is used to bear the force, and the bracket 4 also has another function of preventing the TMD damper 6 from hitting the head 3 during assembly, transportation and installation.

[0025] The bracket 4 includes an angle steel horizontally welded to the inner wall of the hollow section 1 of the antenna, and a channel steel beam with two ends respectively placed on the angle steel and fixed by bolts.

[0026] There are two feasible structural forms of the universal suspension 5:

[0027] Form 1: Figure 1 As shown, the universal suspension 5 is a suspension rod whose upper end is connected to the channel steel beam through a spherical bearing and whose lower end is screwed to the TMD damper 6. The suspension rod is coaxially arranged with the central axis of the antenna steel column.

[0028] Form 2: Figure 2 As shown, the universal suspension 5 is composed of three slings symmetrically arranged with the central axis of the antenna steel column as the symmetry axis. The upper ends of the three slings are connected to the channel steel beam through the same lifting ring, and the lower ends are connected to the TMD damper 6 through three different lifting rings. The three slings are used here to avoid the TMD damper 6 from having a posture that affects the use effect during use, and to ensure that the central axis of the TMD damper 6 is always consistent with the sling located in the middle of the three slings. The suspension rod in the first structural form is hard, which has this effect.

[0029] Both structural forms can achieve the expected results in actual use. Structural form 2 has lower structural cost, but requires higher precision during installation. If conditions permit, structural form 1 should be selected.

[0030] In this embodiment, the sealing head 3 is a flat-bottomed sealing head with an inner diameter larger than the outer diameter of the antenna hollow section 1, and is detachably fixedly connected to the antenna hollow section 1. The flat-bottomed sealing head is easy to install and not easy to be distorted. If the inner diameter is larger than the outer diameter of the antenna hollow section 1, the gap between the downward folded edge and the antenna hollow section 1 can be sealed with glue. Of course, this is not necessary, because the folded edge here itself plays the role of shielding from wind and rain.

[0031] The outer wall of the antenna hollow section 1 is symmetrically welded with a lifting lug 7 for keeping the antenna hollow section 1 in a vertical state during the lifting process, with the central axis of the antenna steel column as the symmetry axis. Note that the lifting lug 7 should be higher than the TMD damper 6.

[0032] The TMD damper 6 is an eddy current damper.

[0033] The utility model discloses a hanging system for pre-installing a damper on the top of an antenna tower crown, and a method of using the hanging system comprises the following steps:

[0034] Step 1: After the TMD damper 6 is adjusted, the bracket 4, the universal suspension 5 and the TMD damper 6 are assembled into one;

[0035] Step 2: Place the antenna tower crown flat on the tire frame on the ground, install the bracket 4 into the hollow section 1 of the antenna, and seal the hollow section 1 of the antenna with the sealing head 3;

[0036] Step 3: Hoist the antenna tower crown.

[0037] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A suspension system for pre-installing a damper on the top of an antenna tower crown, used for pre-installing a TMD damper (6) in the antenna tower crown before the antenna tower crown is installed, the antenna tower crown comprising a base and an antenna steel column vertically inserted in the base, characterized in that: The top of the antenna steel column is provided with a hollow structure, which is recorded as the antenna hollow section (1), and the TMD damper (6) is arranged in the antenna hollow section (1) through a hanging system; The bottom of the antenna hollow section (1) is provided with a hollow section bottom plate (2) fixedly connected to the inner wall of the antenna hollow section (1), and the top is provided with a sealing head (3) for quickly closing the antenna hollow section (1) after the TMD damper (6) is pre-set. The hanging system comprises a hanging bracket (4) fixed to the top of the inner side of the antenna hollow section (1), and a universal hanging bracket (5) extending downward from the hanging bracket (4). The TMD damper (6) is hung in the closed cavity of the antenna hollow section (1) via the universal hanging bracket (5).

2. A suspension system for pre-installing a damper on the top of an antenna tower crown according to claim 1, characterized in that: The bracket (4) comprises an angle steel horizontally welded to the inner wall of the hollow section (1) of the antenna, and a channel steel crossbeam with two ends respectively placed on the angle steel and fixed by bolts.

3. A suspension system for pre-installing a damper on the top of an antenna tower crown according to claim 2, characterized in that: The universal suspension (5) is a suspension rod whose upper end is connected to the channel steel beam through a joint bearing and whose lower end is screw-connected to the TMD damper (6). The suspension rod is coaxially arranged with the central axis of the antenna steel column.

4. A suspension system for pre-installing a damper on the top of an antenna tower crown according to claim 2, characterized in that: The universal suspension (5) is composed of three slings symmetrically arranged with the central axis of the antenna steel column as the symmetry axis, the upper ends of the three slings being connected to the channel steel beam via the same sling ring, and the lower ends being connected to the TMD damper (6) via three different sling rings.

5. A suspension system for pre-installing a damper on the top of an antenna tower crown according to claim 1, characterized in that: The sealing head (3) is a flat-bottomed sealing head with an inner diameter greater than the outer diameter of the hollow section (1) of the antenna, and is detachably fixedly connected to the hollow section (1) of the antenna.

6. A suspension system for pre-installing a damper on the top of an antenna tower crown according to claim 1, characterized in that: A lifting lug (7) for keeping the antenna hollow section (1) in a vertical state during the lifting process is symmetrically welded on the outer wall of the antenna hollow section (1) with the central axis of the antenna steel column as the symmetry axis.

7. A suspension system for pre-installing a damper on the top of an antenna tower crown according to claim 1, characterized in that: The TMD damper (6) is an eddy current damper.

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