Single-tube tower prestressed steel strand reinforced structure

Abstract

The present invention relates to a single-tube tower prestressed steel strand reinforcement structure, comprising: a plug-in tower body equipped with an upper mounting plate and a lower mounting plate, a lightning protection assembly placed at the upper end of the upper mounting plate, a communication antenna group installed on the plug-in tower body, a prestressed steel strand placed in the inner hole of the plug-in tower body, a prestressed steel strand stabilizing device sleeved outside the prestressed steel strand, a prestressed steel strand upper end locking device, a mass damping device, and an adjustable prestressed steel strand lower end locking device. The single-tube tower prestressed steel strand reinforcement structure is not subject to small site restrictions and has a good effect of reducing wind vibration and tower top swing amplitude.

Description

Technical Field

[0001] The invention relates to the technical field of communication towers, in particular to a single-tube tower prestressed steel strand reinforcement structure. Background Art

[0002] At present, most communication base stations at home and abroad use single-tube towers. The tower body of the single-tube tower is generally conical in shape, with a larger bottom and a smaller top. It is often divided into multiple sections and connected by plug-in or flange connection. The utility model of Chinese patent application No. CN 201720436360.5 involves a composite material plug-in single-tube tower, including a tower body and a base plate. The bottom of the tower body is fixedly connected to the base plate by bolts, or the bottom of the tower body is fixedly connected to the base plate by integrated molding. The tower body includes multiple tower sections, and in two adjacent tower sections, the upper end of the lower tower section is inserted into the lower end of the upper tower section. During the use of a single-tube tower, the connection between adjacent tower sections is easy to loosen, resulting in wind vibration, which increases the swing amplitude of the tower top and affects the communication quality. Although multiple inclined support rods or inclined cables are used for reinforcement between the tower body and the ground, which helps to reduce wind vibration and the swing amplitude of the tower top, the effect is poor, and due to the limitation of small site, inclined support rods or inclined cables cannot be used for reinforcement in many occasions. Therefore, designing a single-tube tower prestressed steel strand reinforcement structure that is not restricted by the small site and has a better effect in reducing wind vibration and the swing amplitude of the tower top has become an urgent problem to be solved. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a single-tube tower prestressed steel strand reinforcement structure which is not restricted by the small site and has a better effect of reducing wind vibration and tower top swing.

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

[0005] A single-tube tower prestressed steel strand reinforcement structure comprises: a plug-in tower body equipped with an upper mounting plate and a lower mounting plate, a lightning protection assembly placed on the upper end of the upper mounting plate, a communication antenna group installed on the plug-in tower body, a prestressed steel strand placed in the inner hole of the plug-in tower body, a prestressed steel strand stabilizing device sleeved on the outside of the prestressed steel strand, a prestressed steel strand upper end locking device, a mass damping device, and an adjustable prestressed steel strand lower end locking device.

[0006] Preferably, the locking device for the upper end of the prestressed steel strand comprises: an upper locking seat with a plurality of connecting rods connected to the upper end of the inner side of the plug-in tower body on the outer side, an upper frustum-shaped hole arranged at the upper end of the upper locking seat and the small end of which passes through the lower end of the upper locking seat, at least two upper locking claws with conical surfaces matching the taper of the upper frustum-shaped holes on the outer side and arc surfaces matching the radius of the prestressed steel strand on the inner side, and an upper locking block with a locking groove at each of the two opposite ends; the upper locking claws are circumferentially distributed along the side of the frustum-shaped hole and the arc surfaces press the upper side of the prestressed steel strand; the upper locking blocks press the upper ends of the upper locking claws and the locking grooves of the two upper locking blocks lock the upper ends of the side of the prestressed steel strand, and the two upper locking blocks are detachably connected by two upper locking screws arranged on both sides of the prestressed steel strand; the upper mounting plate is detachably connected to the upper end of the plug-in tower body.

[0007] Preferably, the mass damping device comprises: a plurality of mass damping components distributed along the circumference of the upper locking seat; the mass damping components comprise: a support connected to the inner periphery of the plug-in tower body and provided with an anti-fall plate at the lower end, a mass block placed on the upper end of the anti-fall plate, four pull rings, an inner tension spring and an outer tension spring; the two ends of the inner tension spring are connected one-to-one with the outer periphery of the upper locking seat and the inner end of the mass block through two pull rings, and the two ends of the outer tension spring are connected one-to-one with the outer end of the mass block and the inner end of the support through another two pull rings.

[0008] Preferably, the adjustable prestressed steel strand lower end locking device comprises: a guide seat with a guide countersunk hole at the upper end and an outer periphery detachably connected to the lower end of the inner periphery of the plug-in tower body, a lower locking seat with a guide flange matched with the guide countersunk hole at the outer periphery, a lower frustum-shaped hole arranged at the lower end of the lower locking seat and the small end passing through the upper end of the lower locking seat, at least two lower locking claws with conical surfaces matched with the taper of the lower frustum-shaped hole on the outer side and arc surfaces matched with the radius of the prestressed steel strand on the inner side, a lower locking block with a locking groove at each of the two opposite ends, a plurality of screw holes arranged on the guide flange and distributed along the circumference of the lower locking seat, and a plurality of screw holes corresponding to the screw holes one by one. A prestressed steel strand adjustment screw, and a plurality of through holes provided on the bottom surface of the guide countersunk hole and communicating with the lower end of the guide seat; the lower locking claws are circumferentially distributed along the side circumference of the lower frustum-shaped hole, and the arc surface presses the lower side circumference of the prestressed steel strand; the lower locking block presses the lower end of the lower locking claw, and the locking grooves of the two lower locking blocks lock the lower end of the side circumference of the prestressed steel strand, and the two lower locking blocks are detachably connected by two lower locking screws provided on both sides of the prestressed steel strand; the prestressed steel strand adjustment screw passes through the through hole and is screwed with the screw hole; the lower mounting plate is provided with a stepped through hole with a small end located on the upper side, and a cover installed in the large end of the stepped through hole and covering the prestressed steel strand adjustment screw; the lower mounting plate is detachably connected to the lower end of the plug-in tower body.

[0009] Preferably, the prestressed steel strand stabilizing device comprises: a plurality of stabilizing sleeves distributed up and down and whose outer peripheries are connected to the inner peripheries of the plug-in tower body, and a plurality of wear-resistant sleeves which are sleeved outside the prestressed steel strands and installed one by one in the inner holes of the stabilizing sleeves.

[0010] Preferably, the lightning protection assembly comprises: a connecting plate detachably connected to the upper end of the upper mounting plate, a lightning rod connected to the connecting plate at the lower end, and a plurality of fixing plates distributed along the circumference of the lightning rod and respectively connected to the upper end of the connecting plate and the side of the lightning rod.

[0011] Preferably, the upper end of the lower mounting plate is provided with a plurality of support plates distributed along the circumference of the plug-in tower body and detachably connected to the upper end of the lower mounting plate and the outer circumference of the plug-in tower body respectively; the lower mounting plate is provided with mounting holes having the same number as the support plates and spaced apart from the support plates.

[0012] Preferably, the outer diameter of the upper mounting plate is larger than the outer diameter of the plug-in tower body; a plurality of reinforcing plates are provided at the lower end of the upper mounting plate, which are distributed along the circumference of the plug-in tower body and are detachably connected to the lower end of the upper mounting plate and the outer periphery of the plug-in tower body.

[0013] Preferably, the communication antenna group comprises: a plurality of communication antennas arranged vertically.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the single-tube tower prestressed steel strand reinforcement structure, the prestressed steel strand is a twisted steel cable composed of multiple high-strength steel wires, and has been subjected to stress relief treatment (stabilization treatment). The main characteristics of the prestressed steel strand are high strength and good relaxation performance, and it is relatively straight when unfolded; when the single-tube tower prestressed steel strand reinforcement structure is in use, the arc surface of the upper locking claw presses the upper side of the prestressed steel strand, the upper locking block presses the upper end of the upper locking claw and the locking grooves of the two upper locking blocks lock the upper ends of the side of the prestressed steel strand, the two upper locking blocks are screwed together by two upper locking screws arranged on both sides of the prestressed steel strand, the arc surface of the lower locking claw presses the lower side of the prestressed steel strand, the lower locking block presses the lower end of the lower locking claw and the locking grooves of the two lower locking blocks lock the prestressed steel strand At the lower end of the side enclosure, two lower locking blocks are screwed together by two lower locking screws arranged on both sides of the prestressed steel strand. The prestressed steel strand is locked and tightened by the cooperation of the conical surface of the upper locking claw and the upper frustum-shaped hole, and the conical surface of the lower locking claw and the lower frustum-shaped hole to avoid loosening. Adjustment ensures that the prestressed steel strand has the set prestress. Under the action of wind load, the top of the plug-in tower body will swing. Since the movement of the mass block of the mass damping device lags behind the swing of the top of the plug-in tower body, the energy is transferred from the plug-in tower body to the mass damping device through the damping effect of the mass block, the inner tension spring and the outer tension spring, reducing the displacement amplitude of the top of the plug-in tower body. It is not limited by the small site and has a good effect in reducing wind vibration and the swing amplitude of the tower top. The anti-fall plate can prevent the mass block from falling and improve safety. The lower mounting plate is detachably connected to the lower end of the plug-in tower body. The lower mounting plate is provided with a stepped through hole with a small end located on the upper side, and a cover installed in the large end of the stepped through hole and covering the prestressing adjustment screw, which is conducive to the installation of the lower end locking device of the adjustable prestressed steel strand, the adjustment of the prestressing of the prestressed steel strand, and dust prevention. The stabilizing sleeve of the prestressed steel strand stabilizing device and the wear-resistant sleeve installed in the inner hole of the stabilizing sleeve stabilize the prestressed steel strand and prevent it from shaking, shifting and hanging on other structures when stressed. The lightning rod used for grounding and lightning protection has multiple fixing plates circumferentially distributed and connected to the upper end of the connecting plate and the side of the lightning rod, respectively, so that the lightning rod is installed firmly. Multiple support plates are detachably connected to the upper end of the lower mounting plate and the outer side of the plug-in tower body, and multiple reinforcing plates are detachably connected to the lower end of the upper mounting plate and the outer side of the plug-in tower body, respectively, which is conducive to improving the strength and rigidity of the plug-in tower body and reducing wind vibration and the swing amplitude of the tower top. The lower mounting plate is provided with mounting holes, the number of which is the same as that of the supporting plates and which are spaced apart from the supporting plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 It is a structural schematic diagram of the locking device and mass damping device at the upper end of the prestressed steel strand;

[0017] Figure 3 It is a structural schematic diagram of the lower end locking device of the adjustable prestressed steel strand.

[0018] In the figure: upper mounting plate 1, lower mounting plate 2, plug-in tower body 3, prestressed steel strand 4, upper locking device of prestressed steel strand 5, mass damping device 6, lower locking device of adjustable prestressed steel strand 7, connecting rod 8, upper locking seat 9, upper frustum-shaped hole 10, arc surface 11, upper locking claw 12, upper locking block 13, upper locking screw 14, anti-falling plate 15, support 16, mass block 17, pull ring 18, inner tension spring 19, External tension spring 20, guide countersunk hole 21, guide seat 22, guide flange 23, lower locking seat 24, lower frustum-shaped hole 25, lower locking claw 26, lower locking block 27, screw hole 28, prestressed adjustment screw 29, through hole 30, lower locking screw 31, stepped through hole 32, cover 33, stabilizing sleeve 34, wear-resistant sleeve 35, connecting plate 36, lightning rod 37, fixing plate 38, support plate 39, reinforcing plate 40, communication antenna 41. DETAILED DESCRIPTION

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

[0020] As attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 As shown: a single-tube tower prestressed steel strand reinforcement structure, including: a plug-in tower body 3 equipped with an upper mounting plate 1 and a lower mounting plate 2, a lightning protection component placed on the upper end of the upper mounting plate 1, a communication antenna group installed on the plug-in tower body 3, a prestressed steel strand 4 placed in the inner hole of the plug-in tower body 3, a prestressed steel strand stabilizing device sleeved on the outside of the prestressed steel strand 4, a prestressed steel strand upper end locking device 5, a mass damping device 6, and an adjustable prestressed steel strand lower end locking device 7.

[0021] The upper locking device 5 of the prestressed steel strand wire comprises: an upper locking seat 9 with four connecting rods 8 screwed to the upper end of the inner side of the plug-in tower body 3, an upper frustum-shaped hole 10 provided at the upper end of the upper locking seat 9 and the small end of which is connected to the lower end of the upper locking seat 9, three upper locking claws 12 with conical surfaces adapted to the taper of the upper frustum-shaped hole 10 on the outer side and arc surfaces 11 adapted to the radius of the prestressed steel strand wire 4 on the inner side, and two opposite ends are each provided with a The upper locking block 13 of the locking groove (not shown); the upper locking claws 12 are circumferentially distributed along the side of the frustum-shaped hole and the arc surface 11 presses the upper side of the prestressed steel strand 4; the upper locking block 13 presses the upper end of the upper locking claw 12 and the locking grooves of the two upper locking blocks 13 lock the upper end of the side of the prestressed steel strand 4, and the two upper locking blocks 13 are screwed together by two upper locking screws 14 respectively arranged on both sides of the prestressed steel strand 4; the upper mounting plate 1 is screwed to the upper end of the plug-in tower body 3.

[0022] The mass damping device 6 comprises: four mass damping components uniformly distributed along the circumference of the upper locking seat 9; the mass damping components comprise: a support 16 which is screwed to the inner side of the plug-in tower body 3 and has an integral anti-falling plate 15 at the lower end, a mass block 17 placed at the upper end of the anti-falling plate 15, four pull rings 18, an inner tension spring 19 and an outer tension spring 20; the two ends of the inner tension spring 19 are connected to the outer side of the upper locking seat 9 and the inner end of the mass block 17 in a one-to-one correspondence through two pull rings 18, and the two ends of the outer tension spring 20 are connected to the outer end of the mass block 17 and the inner end of the support 16 in a one-to-one correspondence through another two pull rings 18. The material of the mass block 17 is steel.

[0023] The adjustable prestressed steel strand lower end locking device 7 comprises: a guide seat 22 with a guide countersunk hole 21 at the upper end and the outer side of which is screwed to the lower end of the inner side of the plug-in tower body 3, a lower locking seat 24 with a guide flange 23 that is clearance-matched with the guide countersunk hole 21 at the outer side, a lower frustum-shaped hole 25 provided at the lower end of the lower locking seat 24 and the small end of which is connected to the upper end of the lower locking seat 24, three lower locking claws 26 with conical surfaces that match the taper of the lower frustum-shaped hole 25 on the outer side and arc surfaces 11 that match the radius of the prestressed steel strand 4 on the inner side, a lower locking block 27 with a locking groove (not shown) at each of the two opposite ends, four screw holes 28 that are provided on the guide flange 23 and uniformly distributed along the circumference of the lower locking seat 24, and four prestressed An adjusting screw 29, four through holes 30 arranged on the bottom surface of the guide countersunk hole 21 and connected with the lower end of the guide seat 22; the lower locking claws 26 are circumferentially distributed along the side of the lower frustum-shaped hole 25 and the arc surface 11 presses the lower side of the prestressed steel strand 4; the lower locking block 27 presses the lower end of the lower locking claw 26 and the locking grooves of the two lower locking blocks 27 lock the lower end of the side of the prestressed steel strand 4, and the two lower locking blocks 27 are screwed together through two lower locking screws 31 arranged on both sides of the prestressed steel strand 4; the prestressed adjustment screw 29 passes through the through hole 30 and is screwed with the screw hole 28; the lower mounting plate 2 is provided with a stepped through hole 32 with a small end located on the upper side, and a cover 33 installed in the large end of the stepped through hole 32 and covering the prestressed adjustment screw 29; the lower mounting plate 2 is screwed to the lower end of the plug-in tower body 3.

[0024] The prestressed steel strand stabilizing device comprises: a plurality of stabilizing sleeves 34 distributed up and down and having their outer peripheries screwed to the inner peripheries of the plug-in tower body 3, and a plurality of wear-resistant sleeves 35 which are sleeved on the outside of the prestressed steel strands 4 and are installed in the inner holes of the stabilizing sleeves 34 one by one.

[0025] The lightning protection assembly includes: a connecting plate 36 screwed to the upper end of the upper mounting plate 1, a lightning rod 37 screwed to the connecting plate 36 at the lower end, and six fixing plates 38 evenly distributed along the circumference of the lightning rod 37 and screwed to the upper end of the connecting plate 36 and the side of the lightning rod 37 respectively.

[0026] The upper end of the lower mounting plate 2 is provided with eight support plates 39 which are evenly distributed along the circumference of the plug-in tower body 3 and are respectively screwed to the upper end of the lower mounting plate 2 and the outer side of the plug-in tower body 3; the lower mounting plate 2 is provided with mounting holes (not shown) whose number is the same as the number of support plates 39 and which are spaced apart from the support plates 39.

[0027] The outer diameter of the upper mounting plate 1 is larger than the outer diameter of the plug-in tower body 3 ; the lower end of the upper mounting plate 1 is provided with six reinforcing plates 40 distributed along the circumference of the plug-in tower body 3 and screwed to the lower end of the upper mounting plate 1 and the outer periphery of the plug-in tower body 3 .

[0028] The communication antenna group includes: three communication antennas 41 arranged vertically.

[0029] In addition to the above-mentioned 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 work. Therefore, these embodiments that are not described in detail 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 single-tube tower prestressed steel strand reinforcement structure, comprising: A plug-in tower body equipped with an upper mounting plate and a lower mounting plate, a lightning protection assembly placed on the upper end of the upper mounting plate, and a communication antenna group installed on the plug-in tower body, wherein the single-tube tower prestressed steel strand reinforcement structure further comprises: a prestressed steel strand placed in the inner hole of the plug-in tower body, a prestressed steel strand stabilizing device sleeved outside the prestressed steel strand, a prestressed steel strand upper end locking device, a mass damping device, and an adjustable prestressed steel strand lower end locking device; The upper end locking device of the prestressed steel strand includes an upper locking seat, and the mass damping device includes a plurality of mass damping components distributed along the circumference of the upper locking seat; The mass damping assembly comprises a support with an anti-falling plate, a mass block is arranged on the anti-falling plate, the mass block is connected to the upper locking seat through an inner tension spring, and is connected to the support through an outer tension spring; A plurality of stabilizing sleeves are connected to the inner side of the plug-in tower body, and a plurality of wear-resistant sleeves are arranged on the outer sleeve of the prestressed steel strand, and the wear-resistant sleeves are correspondingly arranged in the inner holes of the stabilizing sleeves.

2. The single-tube tower prestressed steel strand reinforcement structure according to claim 1 is characterized in that: The locking device for the upper end of the prestressed steel strand comprises: an upper locking seat with a plurality of connecting rods connected to the upper end of the inner side of the plug-in tower body on the outer side, an upper frustum-shaped hole arranged at the upper end of the upper locking seat and the small end of which passes through the lower end of the upper locking seat, at least two upper locking claws with conical surfaces matching the taper of the upper frustum-shaped holes on the outer side and arc surfaces matching the radius of the prestressed steel strand on the inner side, and an upper locking block with a locking groove at each of the two opposite ends; the upper locking claws are circumferentially distributed along the side of the upper frustum-shaped hole and the arc surfaces press the upper side of the prestressed steel strand; the upper locking block presses the upper end of the upper locking claw and the locking grooves of the two upper locking blocks lock the upper end of the side of the prestressed steel strand, and the two upper locking blocks are detachably connected by two upper locking screws arranged on both sides of the prestressed steel strand; the upper mounting plate is detachably connected to the upper end of the plug-in tower body.

3. The single-tube tower prestressed steel strand reinforcement structure according to claim 2 is characterized in that: The mass damping device includes: a plurality of mass damping components distributed along the circumference of the upper locking seat; the mass damping components include: a support connected to the inner side of the plug-in tower body and provided with an anti-falling plate at the lower end, a mass block placed on the upper end of the anti-falling plate, four pull rings, an inner tension spring and an outer tension spring; the two ends of the inner tension spring are connected to the outer side of the upper locking seat and the inner end of the mass block in a one-to-one correspondence through two pull rings, and the two ends of the outer tension spring are connected to the outer end of the mass block and the inner end of the support in a one-to-one correspondence through another two pull rings.

4. The single-tube tower prestressed steel strand reinforcement structure according to claim 1, 2 or 3, characterized in that: The adjustable prestressed steel strand lower end locking device comprises: a guide seat with a guide countersunk hole at the upper end and an outer periphery detachably connected to the lower end of the inner periphery of the plug-in tower body, a lower locking seat with a guide flange adapted to the guide countersunk hole at the outer periphery, a lower frustum-shaped hole arranged at the lower end of the lower locking seat and a small end passing through the upper end of the lower locking seat, at least two lower locking claws with a conical surface adapted to the taper of the lower frustum-shaped hole on the outer side and a circular arc surface adapted to the radius of the prestressed steel strand on the inner side, a lower locking block with a locking groove at each of the two opposite ends, a plurality of screw holes arranged on the guide flange and distributed along the circumference of the lower locking seat, and a plurality of prestressed A force adjustment screw, a plurality of through holes arranged on the bottom surface of the guide countersunk hole and connected with the lower end of the guide seat; the lower locking claws are circumferentially distributed along the side circumference of the lower frustum-shaped hole and the arc surface presses the lower side circumference of the prestressed steel strand; the lower locking block presses the lower end of the lower locking claw and the locking grooves of the two lower locking blocks lock the lower end of the side circumference of the prestressed steel strand, and the two lower locking blocks are detachably connected by two lower locking screws arranged on both sides of the prestressed steel strand; the prestressed adjustment screw passes through the through hole and is screwed with the screw hole; the lower mounting plate is provided with a stepped through hole with a small end located on the upper side, and a cover installed in the large end of the stepped through hole and covering the prestressed adjustment screw; the lower mounting plate is detachably connected to the lower end of the plug-in tower body.

5. The single-tube tower prestressed steel strand reinforcement structure according to claim 1, 2 or 3, characterized in that: The prestressed steel strand stabilizing device comprises: a plurality of stabilizing sleeves distributed up and down and connected to the inner periphery of the plug-in tower body, and a plurality of wear-resistant sleeves which are sleeved outside the prestressed steel strands and are installed in the inner holes of the stabilizing sleeves one by one.

6. The single-tube tower prestressed steel strand reinforcement structure according to claim 1, 2 or 3, characterized in that: The lightning protection assembly comprises: a connecting plate detachably connected to the upper end of the upper mounting plate, a lightning rod connected to the connecting plate at the lower end, and a plurality of fixing plates distributed along the circumference of the lightning rod and respectively connected to the upper end of the connecting plate and the side of the lightning rod.

7. The single-tube tower prestressed steel strand reinforcement structure according to claim 1, 2 or 3, characterized in that: The upper end of the lower mounting plate is provided with a plurality of support plates distributed along the circumference of the plug-in tower body and detachably connected to the upper end of the lower mounting plate and the outer periphery of the plug-in tower body; the lower mounting plate is provided with mounting holes having the same number as the support plates and spaced apart from the support plates.

8. The single-tube tower prestressed steel strand reinforcement structure according to claim 1, 2 or 3, characterized in that: The outer diameter of the upper mounting plate is larger than that of the plug-in tower body; the lower end of the upper mounting plate is provided with a plurality of reinforcing plates distributed along the circumference of the plug-in tower body and detachably connected to the lower end of the upper mounting plate and the outer periphery of the plug-in tower body.

9. The single-tube tower prestressed steel strand reinforcement structure according to claim 1, 2 or 3, characterized in that: The communication antenna group includes: a plurality of communication antennas arranged up and down.

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