Device for reducing top displacement of single-tube tower

Abstract

The present invention relates to a device for reducing the displacement of the top of a single-tube tower, comprising: a tower tube with a mounting seat at the lower end, a tower top assembly mounted on the upper end of the tower tube, and a displacement damping device; the displacement damping device comprises: an upper clamp detachably connected to the upper part of the tower tube; a plurality of cantilevers distributed along the circumference of the tower tube and connected to the upper clamp at the inner end, a ring beam connected to the outer end of the cantilever arm, and a damping mechanism with the same number as the cantilever arm and spaced apart from the cantilever arm. The device for reducing the displacement of the top of a single-tube tower enables the displacement of the top of an existing single-tube tower to meet the installation requirements of a newly added 5G antenna, without the need to invest a large amount of money and materials to make a new single-tube tower.

Description

Technical Field

[0001] The present invention relates to the technical field of structural damping, and in particular to a device for reducing the displacement of the top of a single-tube tower. Background Art

[0002] At present, single-tube towers are mostly used for communication base stations at home and abroad. The structure of the single-tube tower can be understood from a high-stability single-tube communication tower described in the utility model with Chinese patent application number CN202122903328.2. With the popularization and use of 5G, it is necessary to add 5G antennas to the original single-tube towers. Since the existing single-tube towers in China often use high-strength steel to improve economic efficiency, a large part of the single-tube towers have a large surplus in strength but poor stiffness, resulting in the displacement of the top of the single-tube tower exceeding the standard and not meeting the installation requirements of the newly added 5G antennas. If a new single-tube tower suitable for the installation of the newly added 5G antennas is replaced, a large amount of funds and materials need to be invested. Therefore, it has become an urgent problem to design a device for reducing the displacement of the top of the existing single-tube tower so that the displacement can meet the installation requirements of the newly added 5G antennas without investing a large amount of funds and materials. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a device for reducing the displacement of the top of an existing single-tube tower so that the displacement can meet the installation requirements of the newly added 5G antennas without investing a large amount of funds and materials.

[0004] The specific technical solution of the present invention is as follows:

[0005] A device for reducing the displacement of the top of a single-tube tower includes: a tower tube with a mounting seat at the lower end, a tower top assembly installed at the upper end of the tower tube, and a displacement damping device. The displacement damping device includes: an upper hoop detachably connected to the upper part of the tower tube; a plurality of cantilevers distributed circumferentially along the tower tube and with the inner ends connected to the upper hoop; a ring beam connected to the outer ends of the cantilevers; and damping mechanisms with the same number as the cantilevers and arranged at intervals with the cantilevers.

[0006] Preferably, the damping mechanism includes: an inner elastic member with the inner end connected to the upper hoop, an outer elastic member with the outer end connected to the ring beam, a mass ball connected to the outer end of the inner elastic member and the inner end of the outer elastic member respectively, and two anti-falling assemblies arranged on both sides of the mass ball respectively.

[0007] Preferably, the anti-falling assembly includes: a turnbuckle, a pull ring inserted into one end of the turnbuckle and connected to an adjacent cantilever, a connecting ear provided with a connection hole and connected to the mass ball, and a steel wire rope with both ends connected to the other end of the turnbuckle and the connecting ear in one-to-one correspondence.

[0008] Preferably, the distance between the pull ring and the axis of the tower tube is less than the distance between the center of the mass ball and the axis of the tower tube.

[0009] Preferably, the inner elastic member is an inner spring, the outer elastic member is an outer spring, and the mass ball is a steel ball.

[0010] Preferably, the displacement damping device further includes: a lower hoop located below the upper hoop and detachably connected to the tower pipe, and a diagonal brace assembly with the same number as the number of the cantilever arms and corresponding to the cantilever arms one by one; the diagonal brace assembly includes: an upper fixing ear connected to the cantilever arm, a lower fixing ear connected to the lower hoop, and a diagonal brace rod with two ends respectively connected to the upper fixing ear and the lower fixing ear in one-to-one correspondence.

[0011] Preferably, the distance between the upper hoop and the lower hoop is 1.3 m to 1.7 m.

[0012] Preferably, on the upper side and the lower side of the inner end of the cantilever arm, there are respectively provided a reinforcing clamping plate with the inner end connected to the upper hoop; the two reinforcing clamping plates are respectively connected to the upper side and the lower side of the inner end of the cantilever arm in one-to-one correspondence.

[0013] Preferably, the tower top assembly includes: a lower connection plate connected to the upper end of the tower pipe, an upper connection plate detachably connected to the lower connection plate, an antenna with the lower end connected to the upper connection plate, and a plurality of fixing plates circumferentially distributed along the antenna and respectively connected to the upper end of the upper connection plate and the side perimeter of the antenna.

[0014] Preferably, the mounting seat includes: a mounting plate connected to the lower end of the tower pipe, and a plurality of support plates circumferentially distributed along the tower pipe and respectively connected to the upper end of the mounting plate and the side perimeter of the tower pipe; the mounting plate is provided with mounting holes with the same number as the number of the support plates and arranged at intervals with the support plates.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: For the device for reducing the displacement at the top of a single-pole tower, the upper hoop of the displacement damping device is detachably connected to the upper part of the tower tube of the existing single-pole tower. The inner ends of multiple cantilevers distributed circumferentially along the tower tube are connected to the upper hoop, the ring beam is connected to the outer ends of the cantilevers, and damping mechanisms with the same number as the cantilevers are arranged at intervals with the cantilevers; under the action of wind load, the top of the tower tube will swing. Since the movement of the steel balls of the damping mechanism lags behind the swing of the top of the tower tube, through the damping action of the steel balls, inner springs and outer springs of the damping mechanism, the amplitude of the displacement at the top of the tower tube is reduced, enabling the displacement at the top of the existing single-pole tower to meet the installation requirements of the newly added 5G antennas, without the need to invest a large amount of funds and materials to manufacture a new single-pole tower. The anti-falling component can prevent the steel balls from falling and improve safety; by rotating the turnbuckle, the tension state of the steel wire rope is adjusted, thereby adjusting the pre-tightening force applied by the steel wire rope, so that the vibration frequencies of the steel balls, inner springs and outer springs can be adjusted to be near the main frequency of the vibration of the tower tube. Through the interaction between the damping mechanism and the tower tube, the energy is transferred from the tower tube to the damping mechanism, achieving the purpose of reducing the vibration of the tower tube. The two ends of the diagonal strut of the diagonal strut component are respectively and correspondingly connected to the upper fixed ear and the lower fixed ear. The distance between the upper hoop and the lower hoop is 1.3 m to 1.7 m, making the ring beam and the damping mechanism stably installed, which is conducive to reducing the displacement at the top of the single-pole tower. The upper connection plate and the lower connection plate of the top component of the tower are detachably connected, which is convenient for installation and disassembly; multiple fixing plates distributed circumferentially along the antenna are respectively connected to the upper end of the upper connection plate and the side perimeter of the antenna, making the antenna stably installed. The multiple support plates distributed circumferentially along the tower tube of the mounting seat are respectively connected to the upper end of the mounting plate and the side perimeter of the tower tube. The mounting plate is provided with mounting holes with the same number as the support plates and arranged at intervals with the support plates, which is convenient for installation and conducive to the stable installation of the tower tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present invention;

[0017] Figure 2 is Figure 1 an enlarged view of the displacement damping device and the top component of the tower in

[0018] In the figure: tower tube 1, upper hoop 2, cantilever 3, ring beam 4, turnbuckle 5, pull ring 6, connection hole 7, connection ear 8, steel wire rope 9, inner spring 10, outer spring 11, steel ball 12, lower hoop 13, upper fixed ear 14, lower fixed ear 15, diagonal strut 16, strengthening splint 17, lower connection plate 18, upper connection plate 19, antenna 20, fixing plate 21, mounting plate 22, support plate 23, mounting hole 24. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] As shown in the attached Figure 1 and attached Figure 2As shown in the figure: A device for reducing the displacement at the top of a single-tube tower, comprising: a tower tube 1 with a mounting base at the lower end, a tower top assembly installed at the upper end of the tower tube 1, and a displacement damping device; the displacement damping device includes: an upper hoop 2 screwed to the upper part of the tower tube 1; three cantilever arms 3 evenly distributed along the circumference of the tower tube 1 and with the inner ends connected to the upper hoop 2, a ring beam 4 screwed to the outer ends of the cantilever arms 3, and damping mechanisms with the same number as the cantilever arms 3 and arranged at intervals with the cantilever arms 3.

[0021] The described damping mechanism includes: an inner elastic member welded to the upper hoop 2 at the inner end, an outer elastic member welded to the ring beam 4 at the outer end, a mass ball welded to the outer end of the inner elastic member and the inner end of the outer elastic member respectively, and two anti-falling components provided on both sides of the mass ball.

[0022] The described anti-falling component includes: a turnbuckle 5, a pull ring 6 inserted into one end of the turnbuckle 5 and welded to an adjacent cantilever arm 3, a connecting ear 8 provided with a connection hole 7 and welded to the mass ball, and a steel wire rope 9 with both ends tied and connected to the other end of the turnbuckle 5 and the connecting ear 8 in one-to-one correspondence.

[0023] The distance between the pull ring 6 and the axis of the tower tube 1 is less than the distance between the center of the mass ball and the axis of the tower tube 1.

[0024] The described inner elastic member is an inner spring 10, the outer elastic member is an outer spring 11, and the mass ball is a steel ball 12.

[0025] The described displacement damping device further includes: a lower hoop 13 located on the lower side of the upper hoop 2 and screwed to the tower tube 1, and diagonal bracing components with the same number as the cantilever arms 3 and corresponding to the cantilever arms 3 one by one; the diagonal bracing components include: an upper fixed ear 14 welded to the cantilever arm 3, a lower fixed ear 15 welded to the lower hoop 13, and a diagonal bracing rod 16 with both ends screwed to the upper fixed ear 14 and the lower fixed ear 15 in one-to-one correspondence.

[0026] The distance between the upper hoop 2 and the lower hoop 13 is 1.5 m.

[0027] On the upper side and the lower side of the inner end of the described cantilever arm 3, there is each a reinforcing splint 17 with the inner end welded to the upper hoop 2; the two reinforcing splints 17 are screwed to the upper side and the lower side of the inner end of the cantilever arm 3 in one-to-one correspondence.

[0028] The described tower top assembly includes: a lower connection plate 18 welded to the upper end of the tower tube 1, an upper connection plate 19 screwed to the lower connection plate 18, an antenna 20 with the lower end welded to the upper connection plate 19, and six fixing plates 21 evenly distributed along the circumference of the antenna 20 and welded to the upper end of the upper connection plate 19 and the side perimeter of the antenna 20 respectively.

[0029] The described mounting base includes: a mounting plate 22 welded to the lower end of the tower pipe 1, and sixteen support plates 23 evenly distributed along the circumferential direction of the tower pipe 1 and welded to the upper end of the mounting plate 22 and the side circumference of the tower pipe 1 respectively; the mounting plate 22 is provided with mounting holes 24 having the same number as the support plates 23 and arranged at intervals with the support plates 23.

[0030] In addition to the above embodiments, within the scope disclosed in the claims and the specification of the present invention, the technical features or technical data of the present invention can be reselected and combined to form new embodiments, which can be achieved by those skilled in the art without creative labor. Therefore, these embodiments not detailedly described in the present invention should also be regarded as specific embodiments of the present invention and within the protection scope of the present invention.

Claims

1. A device for reducing the displacement of the top of a single-tube tower, comprising: The tower tube is provided with a mounting seat at the lower end, and the tower top assembly is installed at the upper end of the tower tube, wherein the device for reducing the displacement of the top of the single-tube tower also includes: a displacement damping device; the displacement damping device includes: an upper clamp detachably connected to the upper part of the tower tube; a plurality of cantilever arms distributed along the circumference of the tower tube and connected to the upper clamp at the inner end, a ring beam connected to the outer end of the cantilever arm, and a damping mechanism with the same number as the cantilever arms and spaced apart from the cantilever arms; the damping mechanism includes: an inner elastic member connected to the upper clamp at the inner end, an outer elastic member connected to the ring beam at the outer end, and a damping mechanism with the same number as the cantilever arms. The outer end of the inner elastic part and the inner end of the outer elastic part are respectively connected to mass balls, and two anti-falling components are arranged on both sides of the mass balls; the inner elastic part is an inner spring, the outer elastic part is an outer spring, and the mass ball is a steel ball; the anti-falling component includes a basket bolt, a pull ring that is passed through one end of the basket bolt and connected to the adjacent cantilever arm, and a steel wire rope that connects the other end of the basket bolt and the mass ball. The preload force applied by the steel wire rope is adjusted by rotating the basket bolt, so that the vibration frequency of the steel ball, the inner spring and the outer spring is adjusted to be near the main frequency of the tower pipe vibration.

2. The device for reducing the top displacement of a single-tube tower according to claim 1, characterized in that: The anti-falling component also includes: a connecting ear provided with a connecting hole and connected to the mass ball.

3. The device for reducing the displacement of the top of a single-tube tower according to claim 2, characterized in that: The distance between the pull ring and the axis of the tower tube is smaller than the distance between the center of the mass ball and the axis of the tower tube.

4. The device for reducing the top displacement of a single-tube tower according to claim 1, 2 or 3, characterized in that: The displacement damping device also includes: a lower clamp located at the lower side of the upper clamp and detachably connected to the tower pipe, and diagonal brace components whose number is the same as the number of cantilever arms and which correspond one-to-one to the cantilever arms; the diagonal brace components include: an upper fixing ear connected to the cantilever arm, a lower fixing ear connected to the lower clamp, and a diagonal brace rod with two ends connected one-to-one to the upper fixing ear and the lower fixing ear.

5. The device for reducing the top displacement of a single-tube tower according to claim 4, characterized in that: The upper clamp and the lower clamp are spaced 1.3m to 1.7m apart.

6. The device for reducing the displacement of the top of a single-tube tower according to claim 1, 2 or 3, characterized in that: The upper side and the lower side of the inner end of the cantilever arm are each provided with a reinforcing splint whose inner end is connected to the upper clamp; the two reinforcing splints are connected to the upper side and the lower side of the inner end of the cantilever arm in a one-to-one correspondence.

7. The device for reducing the top displacement of a single-tube tower according to claim 1, 2 or 3, characterized in that: The tower top assembly includes: a lower connecting plate connected to the upper end of the tower tube, an upper connecting plate detachably connected to the lower connecting plate, an antenna whose lower end is connected to the upper connecting plate, and a plurality of fixing plates distributed along the circumference of the antenna and respectively connected to the upper end of the upper connecting plate and the side circumference of the antenna.

8. The device for reducing the top displacement of a single-tube tower according to claim 1, 2 or 3, characterized in that: The mounting seat includes: a mounting plate connected to the lower end of the tower tube, and a plurality of support plates distributed along the circumference of the tower tube and respectively connected to the upper end of the mounting plate and the side of the tower tube; the mounting plate is provided with mounting holes having the same number as the support plates and spaced apart from the support plates.

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