A device for adjusting the downtilt angle of a communication antenna

Abstract

The present invention is applicable to the technical field of communication antenna installation, and provides a device for adjusting the downward tilt angle of a communication antenna, including a main shaft, and a bottom bracket fixed on the main shaft, a plurality of mounting shafts are evenly fixed in an annular shape on the upper end of the bottom bracket, and a plurality of side walls of the mounting shafts are rotatably connected to screw rods, and also includes: communication antennas rotatably connected to the plurality of mounting shafts, and sliding sleeves slidably connected to the plurality of mounting shafts; a plurality of sliding sleeves are rotatably connected to connecting rods. When the threaded sleeve moves to the end of the screw rod and the screw rod continues to rotate, the screw rod can overcome the friction of the friction assembly and drive the threaded sleeve to rotate, thereby avoiding rigid collision and damage between the threaded sleeve and the screw rod; the downward tilt angles of the plurality of communication antennas can be adjusted respectively by the pushing mechanism pushing different lifting slides to move upward, and the rotation of the drive shaft, thereby simplifying the steps of adjusting the downward tilt angles of the plurality of communication antennas, and the operation is simple.

Description

Technical Field

[0001] The invention belongs to the technical field of communication antenna installation, and in particular relates to a device for adjusting the downtilt angle of a communication antenna. Background Art

[0002] Adjusting the downtilt angle of the communication antenna can reduce the coverage of the cell, reduce co-channel interference, and enhance signal strength. In order to facilitate the adjustment of the downtilt angle of the communication antenna in the later stage and reduce the need for workers to climb up and down, the existing communication antennas are mostly installed through electric adjustment devices. However, a base station generally has multiple communication antennas installed, so multiple electric adjustment devices and multiple driving components are required, which is costly.

[0003] The antenna tilt adjustment device disclosed in the existing Chinese invention patent (CN 111370872 B) can drive multiple screws to rotate through the forward and reverse rotation of a motor in conjunction with a complex transmission structure, and the rotation of the screws drives the upper and lower push rods to move, and then the push rods move on the screw rods to adjust the downward tilt angle of the communication antenna, thereby reducing the use of driving components and reducing the cost of use.

[0004] Although the above method can achieve the function of adjusting the downtilt angle of the communication antenna and reduce the use of driving elements, the above method still has shortcomings. The above method requires frequent adjustment of the forward and reverse rotation of the motor, which makes the downtilt angle adjustment operation of the communication antenna more complicated. In addition, there is no safety device when the push rod moves on the screw rod. When the push rod moves the end of the screw rod and the screw rod continues to rotate, there is a risk of the push rod detaching from the screw rod or damaging the thread connecting the push rod and the screw rod. Summary of the invention

[0005] The purpose of the embodiment of the present invention is to provide a device for adjusting the downtilt angle of a communication antenna, aiming to solve the problem that the push rod is detached from the screw rod or the thread connecting the push rod and the screw rod is damaged in the existing device.

[0006] The present invention is implemented as follows: a device for adjusting the downward tilt angle of a communication antenna comprises a main shaft and a bottom bracket fixed on the main shaft, a plurality of mounting shafts being evenly fixed in an annular shape on the upper end of the bottom bracket, a plurality of side walls of the mounting shafts being rotatably connected to the plurality of communication antennas, and a plurality of sliding sleeves being slidably connected to the plurality of mounting shafts; a plurality of sliding sleeves being rotatably connected to connecting rods, the ends of the plurality of connecting rods being rotatably connected to the plurality of communication antennas respectively; a plurality of sliding sleeves being rotatably connected to threaded sleeves, the plurality of threaded sleeves being respectively threadedly connected to the plurality of screw rods, a plurality of sliding sleeves being provided with friction components, the friction components limiting the rotation of the threaded sleeves on the sliding sleeves by friction force; a plurality of guide grooves being provided at the lower parts of the plurality of mounting shafts, and a plurality of guide grooves being provided at the lower parts of the plurality of mounting shafts. A lifting slide is slidably connected in the groove, and a plurality of lifting slides are fixedly connected to a compression spring 1 at the upper ends, and the end of the compression spring 1 is fixed to the upper end of the guide groove; a pushing mechanism is arranged on the bottom bracket, and the pushing mechanism is used to overcome the elastic force of the compression spring 1 and drive one of the lifting slides to move upward; a plurality of lifting slides are rotatably connected to a driving shaft at the upper ends, and a synchronous rotation mechanism is arranged on the main shaft, and the synchronous rotation mechanism is used to drive a plurality of driving shafts to rotate synchronously; a connecting component is arranged on the upper ends of the plurality of driving shafts, and when the lifting slide drives the driving shaft to move upward, the connecting component makes the driving shaft and the screw rod transmission connected; a stop component is arranged on the plurality of mounting shafts, and the stop component is used to limit the upward and downward movement of the sliding sleeve, and when the lifting slide moves upward, the stop component releases the movement restriction of the sliding sleeve.

[0007] According to a further technical solution, the friction assembly includes a sliding groove 2 arranged in the sliding sleeve, and a friction slider slidably connected in the sliding groove 2; one end of the friction slider contacts the side wall of the threaded sleeve, and the other end of the friction slider is connected to a compression spring 4, which is arranged in the sliding groove 2.

[0008] According to a further technical solution, the synchronous rotation mechanism includes a rotating sleeve rotatably connected to the main shaft, and an outer gear ring fixed on the rotating sleeve; a plurality of rotating shafts are rotatably connected to the upper end of the bottom bracket, a gear is fixed to each of the plurality of rotating shafts, and the plurality of gears are simultaneously engaged with an outer gear ring; a rotating component is provided on the bottom bracket, and the rotating component is used to drive the rotating sleeve to rotate; a synchronous pulley is fixed to each of the plurality of rotating shafts, and a synchronous pulley is rotatably connected to each of the plurality of mounting shaft side walls, and the synchronous pulley on the rotating shaft is connected to the synchronous pulley on the side wall of the mounting shaft through a synchronous belt drive; the driving shaft passes through the synchronous pulley on the side wall of the mounting shaft and is slidably connected to the synchronous pulley.

[0009] According to a further technical solution, the rotating component 1 includes a fixed plate fixed on the side wall of the main shaft, a motor 1 is fixed on the fixed plate, and a gear 2 is fixed to the rotating end of the motor 1; an outer gear ring 2 is fixed on the rotating sleeve, and the outer gear ring 2 is meshed with gear 2.

[0010] A further technical solution is that the pushing mechanism includes a pushing ring rotatably connected to the main shaft, and a pushing part protrudes from the side wall of the pushing ring; a rotating component 2 is arranged on the bottom bracket, and the rotating component 2 is used to drive the pushing ring to rotate; a plurality of guide grooves are evenly arranged in a ring shape on the upper end of the bottom bracket, and a plurality of sliding wedges are slidably connected in the plurality of guide grooves, and a compression spring 2 is arranged in the guide groove, and the compression spring 2 is arranged at the end of the sliding wedge away from the main shaft; and a plurality of sliding wedges are provided with avoidance grooves for avoiding the rotating shaft.

[0011] According to a further technical solution, the rotating component 2 includes a motor 2 fixed on a bottom bracket, and a gear 3 fixed on a rotating end of the motor 2; an outer gear ring 3 is fixed on the lower end of the push ring, and the outer gear ring 3 is meshed with the gear 3.

[0012] A further technical solution is that the connecting assembly includes a connecting shoulder fixed at the upper end of the driving shaft, and a plurality of sliding grooves 1 are evenly arranged in an annular shape on the upper part of the connecting shoulder; connecting rods are slidably connected in the plurality of sliding grooves 1, and compression springs 3 are fixedly connected at the lower ends of the plurality of connecting rods, and the ends of the plurality of compression springs 3 are fixed in the plurality of sliding grooves 1; a plurality of connecting holes are evenly arranged in an annular shape on the lower end of the screw rod, and the plurality of connecting holes cooperate with the connecting rods.

[0013] A further technical solution is that the stop assembly includes a slide groove 1 arranged on the mounting shaft, a stop rod is slidably connected in the slide groove 1, and a compression spring 5 is connected to the end of the stop rod away from the communication antenna, and the compression spring 5 is located in the slide groove 1; a rope groove is arranged on the mounting shaft, a connecting rope is arranged in the rope groove, one end of the connecting rope is fixed to the end of the stop rod away from the communication antenna, and the other end of the connecting rope is connected to the lower end of the lifting slide plate; a plurality of stop grooves are linearly arranged at the end of the stop rod close to the communication antenna; a slide groove 2 is arranged in the sliding sleeve, a stop shaft is slidably connected in the slide groove 2, and a compression spring 6 is fixedly connected to the end of the stop shaft away from the stop rod, and the compression spring 6 is connected in the slide groove 2.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. When the threaded sleeve moves to the end of the screw rod and the screw rod continues to rotate, the screw rod can overcome the friction of the friction component and drive the threaded sleeve to rotate, thereby avoiding rigid collision and damage between the threaded sleeve and the screw rod;

[0016] 2. By pushing different lifting slides upward by the pushing mechanism and rotating the driving shaft, the downward tilt angles of multiple communication antennas can be adjusted respectively, thereby simplifying the steps of adjusting the downward tilt angles of multiple communication antennas and making the operation simple;

[0017] 3. After the downward tilt angle of the communication antenna is adjusted, the stop assembly limits the upward and downward movement of the sliding sleeve, thereby fixing the downward tilt angle of the communication antenna to prevent the communication antenna from rotating due to wind. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a device for adjusting the downtilt angle of a communication antenna provided by the present invention;

[0019] Figure 2 The present invention provides Figure 1 Schematic diagram of the structure after removing the communication antenna;

[0020] Figure 3 The present invention provides Figure 2 Schematic diagram of the structure when looking up at the tilt angle;

[0021] Figure 4 The present invention provides Figure 2 Schematic diagram of the structure after removing the main shaft and bottom bracket;

[0022] Figure 5 The present invention provides Figure 4 A is a schematic diagram of the enlarged structure of the middle part;

[0023] Figure 6 The present invention provides Figure 4 Schematic diagram of the structure when looking up at the tilt angle;

[0024] Figure 7 The present invention provides Figure 6 Schematic diagram of the enlarged structure of B;

[0025] Figure 8 The present invention provides Figure 1 Schematic diagram of the connection structure between the mounting shaft and the lead screw;

[0026] Fig. 9 The present invention provides Figure 8 Schematic diagram of the enlarged structure of C in the middle;

[0027] Fig.10 The present invention provides Fig. 9 Schematic diagram of the connection structure of the connecting components;

[0028] Fig.11 The present invention provides Figure 8 Schematic diagram of the internal structure of the mounting shaft and sleeve;

[0029] Fig.12 The present invention provides Fig.11 Schematic diagram of the enlarged structure of D in the middle;

[0030] Fig.13 The present invention provides Fig.11 Schematic diagram of the enlarged structure of E.

[0031] In the accompanying drawings: spindle 101, bottom bracket 102, mounting shaft 103, screw 104, communication antenna 105, sleeve 106, connecting rod 107, threaded sleeve 108, guide groove 109, lifting slide plate 110, compression spring 111, drive shaft 112, synchronous rotation mechanism 2, rotating sleeve 201, outer gear ring 1 202, rotating shaft 203, gear 1 204, synchronous pulley 205, synchronous belt 206, rotating component 1 3, outer gear ring 2 301, fixing plate 302, motor 1 303, gear 2 304, pushing mechanism 4, pushing ring 401, pushing part 402, guide slide groove 403, sliding wedge 404, compression spring two 405, avoidance groove 406, rotating component two 5, outer gear ring three 501, motor two 502, gear three 503, connecting component 6, connecting shoulder 601, sliding groove one 602, connecting rod 603, compression spring three 604, connecting hole 605, friction component 7, sliding groove two 701, friction slider 702, compression spring four 703, bolt 704, stop component 8, slide groove one 801, stop rod 802, compression spring five 803, rope groove 804, connecting rope 805, stop groove 806, slide groove two 807, stop shaft 808, compression spring six 809. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8As shown, a device for adjusting the downward tilt angle of a communication antenna provided by an embodiment of the present invention includes a main shaft 101, and a bottom bracket 102 fixed on the main shaft 101, a plurality of mounting shafts 103 are evenly fixed in an annular shape on the upper end of the bottom bracket 102, and a plurality of side walls of the mounting shafts 103 are rotatably connected to the screw rods 104, and also includes: a plurality of communication antennas 105 rotatably connected to the mounting shafts 103, and a plurality of sliding sleeves 106 slidably connected to the mounting shafts 103; a plurality of the sliding sleeves 106 The plurality of connecting rods 107 are rotatably connected to the plurality of communication antennas 105 at their ends; the plurality of sleeves 106 are rotatably connected to threaded sleeves 108, the plurality of threaded sleeves 108 are respectively threadedly connected to the plurality of screw rods 104, and the plurality of sleeves 106 are provided with friction components 7, the friction components 7 limit the rotation of the threaded sleeves 108 on the sleeves 106 through friction force; the plurality of mounting shafts 103 are provided with guide grooves 109 at their lower parts, and the plurality of The guide groove 109 is slidably connected with a lifting slide 110, and the upper ends of the plurality of lifting slides 110 are fixedly connected with a compression spring 111, and the end of the compression spring 111 is fixed to the upper end of the guide groove 109; the bottom bracket 102 is provided with a pushing mechanism 4, and the pushing mechanism 4 is used to overcome the elastic force of the compression spring 111 and drive one of the lifting slides 110 to move upward; the upper ends of the plurality of lifting slides 110 are rotatably connected with a driving shaft 112, and the main shaft 101 is provided with a synchronous rotating mechanism Structure 2, the synchronous rotation mechanism 2 is used to drive multiple drive shafts 112 to rotate synchronously; the upper ends of the multiple drive shafts 112 are provided with connecting components 6, when the lifting slide 110 drives the drive shaft 112 to move upward, the connecting component 6 makes the drive shaft 112 and the screw rod 104 transmission connected; the multiple mounting shafts 103 are provided with stop components 8, the stop components 8 are used to limit the up and down movement of the sliding sleeve 106, when the lifting slide 110 moves upward, the stop component 8 releases the movement restriction of the sliding sleeve 106.

[0035] In the embodiment of the present invention, when in use, the device for adjusting the downward tilt angle of the communication antenna is installed on the upper end of the utility pole by bolts, and multiple communication antennas 105 are installed on the installation shaft 103. When the downward tilt angle of the communication antenna 105 is adjusted, the synchronous rotation mechanism 2 drives the multiple drive shafts 112 to rotate synchronously, and the pushing mechanism 4 overcomes the elastic force of the compression spring 111 and drives one of the lifting slides 110 to move upward. This lifting slide 110 and the communication antenna 105 that needs to be adjusted are installed on the same installation shaft 103, and the lifting slide 110 drives the drive shaft 112 to move upward. When the lifting slide plate 110 moves upward, the stop assembly 8 releases the movement restriction of the sliding sleeve 106, and the connecting assembly 6 connects the driving shaft 112 and the screw rod 104, the rotating driving shaft 112 drives the screw rod 104 to rotate through the connecting assembly 6, under the guidance of the installation shaft 103, and the friction assembly 7 limits the rotation of the threaded sleeve 108 on the sliding sleeve 106 through the friction force, the rotating screw rod 104 drives the sliding sleeve 106 to move up and down through the threaded transmission with the threaded sleeve 108, and the sliding sleeve 106 drives the communication antenna 105 to rotate through the connecting rod 107 , and then adjust the downward tilt angle of the communication antenna 105. When the threaded sleeve 108 moves to the end of the screw rod 104 and the screw rod 104 continues to rotate, the screw rod 104 can overcome the friction force of the friction component 7 and drive the threaded sleeve 108 to rotate, thereby avoiding the rigid collision and damage between the threaded sleeve 108 and the screw rod 104. After the downward tilt angle adjustment of the communication antenna 105 is completed, the pushing mechanism 4 stops pushing the lifting slide 110, and the compression spring 111 pushes the lifting slide 110 to move downward and reset. The lifting slide 110 drives the drive shaft 112 to move downward, and the stop component 8 limits The sliding sleeve 106 moves up and down, and the transmission connection between the driving shaft 112 and the screw rod 104 is disconnected. The pushing mechanism 4 pushes different lifting slides 110 to move upward, and the driving shaft 112 rotates, so that the downward tilt angles of multiple communication antennas 105 can be adjusted separately, thereby simplifying the steps of adjusting the downward tilt angles of multiple communication antennas 105. The operation is simple, and after the downward tilt angle adjustment of the communication antenna 105 is completed, the stop assembly 8 limits the upward and downward movement of the sliding sleeve 106, thereby fixing the downward tilt angle of the communication antenna 105 to prevent the wind from blowing the communication antenna 105 to rotate.

[0036] like Figure 1 , Figure 8 , Fig.11 and Fig.12As shown, as a preferred embodiment of the present invention, the friction assembly 7 includes a sliding groove 701 set in the sliding sleeve 106, and a friction slider 702 slidably connected in the sliding groove 701; one end of the friction slider 702 contacts the side wall of the threaded sleeve 108, and the other end of the friction slider 702 is connected to a compression spring 703, and the compression spring 703 is set in the sliding groove 701; a bolt 704 is threadedly connected to the sliding sleeve 106, and the end of the bolt 704 is rotatably connected to a push plate, the push plate contacts the end of the compression spring 703, and the push plate is located in the sliding groove 701.

[0037] In the embodiment of the present invention, the compression spring four 703 pushes the friction slider 702, thereby making the friction slider 702 rest against the side wall of the threaded sleeve 108, and limiting the rotation of the threaded sleeve 108 by the friction force of the friction slider 702; when the threaded sleeve 108 moves to the end of the screw rod 104 and the screw rod 104 continues to rotate, the screw rod 104 overcomes the friction force and drives the threaded sleeve 108 to rotate; the bolt 704 is rotated, and the bolt 704 drives the push plate to move through thread transmission, and the push plate compresses the compression spring four 703, thereby adjusting the elastic force of the compression spring four 703, and then adjusting the friction force.

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 8 , Fig. 9 and Fig.10 As shown, as a preferred embodiment of the present invention, the synchronous rotation mechanism 2 includes a rotating sleeve 201 rotatably connected to the main shaft 101, and an outer gear ring 202 fixed on the rotating sleeve 201; the upper end of the bottom bracket 102 is rotatably connected to multiple rotating shafts 203, multiple rotating shafts 203 are fixed with gears 204, and multiple gears 204 are simultaneously engaged with the outer gear ring 202; a rotating component 3 is provided on the bottom bracket 102, and the rotating component 3 is used to drive the rotating sleeve 201 to rotate; multiple rotating shafts 203 are fixed with synchronous pulleys 205, and multiple side walls of the mounting shafts 103 are fixed with synchronous pulleys 205. The synchronous pulley 205 is rotatably connected to the rotating shaft 203, and the synchronous pulley 205 on the side wall of the mounting shaft 103 is connected to the synchronous pulley 205 through a synchronous belt 206; the driving shaft 112 passes through the synchronous pulley 205 on the side wall of the mounting shaft 103 and is slidably connected to the synchronous pulley 205; the rotating component 13 includes a fixed plate 302 fixed on the side wall of the main shaft 101, a motor 1 303 is fixed on the fixed plate 302, and a gear 2 304 is fixed to the rotating end of the motor 1 303; an outer gear ring 2 301 is fixed on the rotating sleeve 201, and the outer gear ring 2 301 is meshed with the gear 2 304.

[0039] In the embodiment of the present invention, the motor 1 303 drives the gear 2 304 to rotate, the gear 2 304 drives the outer gear ring 2 301 to rotate, the outer gear ring 2 301 drives the rotating sleeve 201 to rotate, the rotating sleeve 201 drives the outer gear ring 1 202 to rotate, the outer gear ring 1 202 drives multiple gears 1 204 to rotate, the multiple gears 1 204 drive the multiple rotating shafts 203 to rotate, the multiple rotating shafts 203 drive the multiple synchronous pulleys 205 to rotate, the multiple synchronous pulleys 205 drive the synchronous pulleys 205 on the multiple mounting shafts 103 to rotate synchronously through the synchronous belt 206, the synchronous pulleys 205 on the multiple mounting shafts 103 drive the multiple drive shafts 112 to rotate synchronously, and the drive shaft 112 can move up and down on the synchronous pulleys 205.

[0040] like Figure 1-Figure 9 As shown, as a preferred embodiment of the present invention, the pushing mechanism 4 includes a pushing ring 401 rotatably connected to the main shaft 101, and a pushing portion 402 protrudes from the side wall of the pushing ring 401; a rotating component 2 5 is provided on the bottom bracket 102, and the rotating component 2 5 is used to drive the pushing ring 401 to rotate; a plurality of guide grooves 403 are evenly arranged in an annular shape on the upper end of the bottom bracket 102, and a sliding wedge 404 is slidably connected in each of the plurality of guide grooves 403, and the guide grooves A compression spring 2 405 is arranged in 403, and the compression spring 2 405 is arranged at the end of the sliding wedge 404 away from the main shaft 101; a plurality of the sliding wedges 404 are provided with an avoidance groove 406 for avoiding the rotating shaft 203; the rotating component 2 5 includes a motor 2 502 fixed on the bottom bracket 102, and a gear 3 503 fixed at the rotating end of the motor 2 502; an outer gear ring 3 501 is fixed at the lower end of the push ring 401, and the outer gear ring 3 501 is meshed with the gear 3 503.

[0041] In the embodiment of the present invention, when it is necessary to adjust the downward tilt angle of the communication antenna 105, the motor 2 502 drives the gear 3 503 to rotate, the gear 3 503 drives the outer gear ring 3 501 to rotate, the outer gear ring 3 501 drives the push ring 401 to rotate, the push ring 401 drives the push part 402 to revolve, and when the push part 402 pushes one of the sliding wedge blocks 404, the sliding wedge block 404 overcomes the elastic force of the compression spring 2 405 and moves, and the moving compression spring 2 405 overcomes the elastic force of the compression spring 1 111 and pushes the lifting slide 110 to move upward; after the downward tilt angle adjustment of the communication antenna 105 is completed, the push ring 401 drives the push part 402 to rotate until it is not in contact with the sliding wedge block 404, the compression spring 2 405 pushes the sliding wedge block 404 to move in the opposite direction and reset, and the compression spring 1 111 pushes the lifting slide 110 to move downward and reset.

[0042] like Figure 8 , Fig. 9 and Fig.10As shown, as a preferred embodiment of the present invention, the connecting component 6 includes a connecting shoulder 601 fixed at the upper end of the driving shaft 112, and a plurality of sliding grooves 602 are evenly arranged in an annular manner on the upper part of the connecting shoulder 601; a plurality of connecting rods 603 are slidably connected in the sliding grooves 602, and a plurality of connecting rods 603 are fixedly connected at the lower ends with compression springs 604, and the ends of the plurality of compression springs 604 are fixed in the plurality of sliding grooves 602; a plurality of connecting holes 605 are evenly arranged in an annular manner on the lower end of the screw rod 104, and the plurality of connecting holes 605 cooperate with the connecting rods 603.

[0043] In the embodiment of the present invention, the lifting slide 110 drives the driving shaft 112 to move upward, the driving shaft 112 drives the connecting shaft shoulder 601 to move upward, and the connecting shaft shoulder 601 drives the connecting rod 603 to be inserted into the connecting hole 605; the rotating driving shaft 112 drives the connecting shaft shoulder 601 to rotate, and the connecting shaft shoulder 601 drives the screw rod 104 to rotate through the connecting rod 603 and the connecting hole 605; the lifting slide 110 drives the driving shaft 112 to move downward, the driving shaft 112 drives the connecting shaft shoulder 601 to move downward, and the connecting shaft shoulder 601 drives the connecting rod 603 to disengage from the connecting hole 605.

[0044] like Figure 1 , Figure 8 , Fig. 9 , Fig.11 and Fig.13 As shown, as a preferred embodiment of the present invention, the stop assembly 8 includes a slide groove 801 arranged on the installation shaft 103, a stop rod 802 is slidably connected in the slide groove 801, and a compression spring 803 is connected to the end of the stop rod 802 away from the communication antenna 105, and the compression spring 803 is located in the slide groove 801; a rope groove 804 is arranged on the installation shaft 103, a connecting rope 805 is arranged in the rope groove 804, and one end of the connecting rope 805 is fixed to the stop groove 801. The rod 802 is at one end away from the communication antenna 105, and the other end of the connecting rope 805 is connected to the lower end of the lifting slide 110; the end of the stop rod 802 close to the communication antenna 105 is linearly provided with a plurality of stop grooves 806; a second slide groove 807 is provided in the sliding sleeve 106, and a stop shaft 808 is slidably connected in the second slide groove 807, and the end of the stop shaft 808 away from the stop rod 802 is fixedly connected with a compression spring six 809, and the compression spring six 809 is connected in the second slide groove 807.

[0045] In the embodiment of the present invention, in the initial state, the compression spring five 803 pushes the stop rod 802 to move, and the stop shaft 808 is inserted into the stop groove 806 on the stop rod 802, thereby limiting the up and down movement of the sliding sleeve 106; when the lifting slide 110 moves upward, the lifting slide 110 pulls one end of the connecting rope 805, and the other end of the connecting rope 805 overcomes the elastic force of the compression spring five 803 and drives the stop rod 802 to move, so that the stop rod 802 is away from the stop rod 802, and then the stop rod 802 is disengaged from the stop groove 806, thereby releasing the restriction on the up and down movement of the sliding sleeve 106.

[0046] The above embodiment of the present invention provides a device for adjusting the downward tilt angle of a communication antenna. When in use, the device for adjusting the downward tilt angle of a communication antenna is installed on the upper end of a pole by bolts, and multiple communication antennas 105 are installed on the installation shaft 103. The compression spring 5 803 pushes the stop rod 802 to move, and the stop shaft 808 is inserted into the stop groove 806 on the stop rod 802, thereby limiting the upward and downward movement of the sliding sleeve 106. When the downward tilt angle of the communication antenna 105 is adjusted, the motor 1 303 drives the gear 2 304 to rotate, and the gear The second gear wheel 304 drives the second outer gear ring 301 to rotate, the second outer gear ring 301 drives the rotating sleeve 201 to rotate, the rotating sleeve 201 drives the first outer gear ring 202 to rotate, the first outer gear ring 202 drives the plurality of gears 1 204 to rotate, the plurality of gears 1 204 drives the plurality of rotating shafts 203 to rotate, the plurality of rotating shafts 203 drives the plurality of synchronous pulleys 205 to rotate, the plurality of synchronous pulleys 205 drive the plurality of synchronous pulleys 205 on the mounting shafts 103 to rotate synchronously through the synchronous belt 206, and the plurality of synchronous pulleys on the mounting shafts 103 rotate synchronously. The pulley 205 drives the multiple driving shafts 112 to rotate synchronously, the motor 2 502 drives the gear 3 503 to rotate, the gear 3 503 drives the outer gear ring 3 501 to rotate, the outer gear ring 3 501 drives the push ring 401 to rotate, the push ring 401 drives the push part 402 to revolve, when the push part 402 pushes one of the sliding wedges 404, the sliding wedge 404 overcomes the elastic force of the compression spring 2 405 and moves, the moving compression spring 2 405 overcomes the elastic force of the compression spring 1 111 and pushes the lifting slide 110 to move upward, The lifting slide 110 pulls one end of the connecting rope 805, and the other end of the connecting rope 805 overcomes the elastic force of the compression spring 5 803 and drives the stop rod 802 to move, so that the stop rod 802 is away from the stop rod 802, and then the stop rod 802 is disengaged from the stop groove 806, and the restriction of the sliding sleeve 106 on the upward and downward movement is released, and the lifting slide 110 drives the driving shaft 112 to move upward, and the driving shaft 112 drives the connecting shaft shoulder 601 to move upward, and the connecting shaft shoulder 601 drives the connecting rod 603 to be inserted into the connecting hole 605;The rotating drive shaft 112 drives the connecting shaft shoulder 601 to rotate, and the connecting shaft shoulder 601 drives the screw rod 104 to rotate through the connecting rod 603 and the connecting hole 605. The compression spring 703 pushes the friction slider 702, so that the friction slider 702 is pressed against the side wall of the threaded sleeve 108, and the rotation of the threaded sleeve 108 is limited by the friction force of the friction slider 702. The rotating screw rod 104 drives the sliding sleeve 106 to move up and down through the threaded transmission with the threaded sleeve 108. The sliding sleeve 106 is connected to the connecting rod. 107 drives the communication antenna 105 to rotate, thereby adjusting the downward tilt angle of the communication antenna 105. When the threaded sleeve 108 moves to the end of the screw rod 104 and the screw rod 104 continues to rotate, the screw rod 104 can overcome the friction force of the friction component 7 and drive the threaded sleeve 108 to rotate, thereby avoiding rigid collision and damage between the threaded sleeve 108 and the screw rod 104. After the downward tilt angle of the communication antenna 105 is adjusted, the push ring 401 drives the push part 402 to rotate until it is not in contact with the sliding wedge 404. , the compression spring 2 405 pushes the sliding wedge 404 to move in the opposite direction and reset, the compression spring 1 111 pushes the lifting slide 110 to move downward and reset, the lifting slide 110 drives the driving shaft 112 to move downward, the driving shaft 112 drives the connecting shaft shoulder 601 to move downward, the connecting shaft shoulder 601 drives the connecting plug 603 to disengage from the connecting hole 605, the compression spring 5 803 pushes the stop rod 802 to move, the stop shaft 808 is inserted into the stop groove 806 on the stop rod 802, and then the sliding sleeve 106 is restricted to move up and down, and the push mechanism 4 pushes different lifting slides 110 to move upward, and the driving shaft 112 rotates, so that the downward tilt angles of multiple communication antennas 105 can be adjusted respectively, thereby simplifying the steps of adjusting the downward tilt angles of multiple communication antennas 105, and the operation is simple. After the downward tilt angle adjustment of the communication antenna 105 is completed, the stop assembly 8 restricts the sliding sleeve 106 from moving up and down, thereby fixing the downward tilt angle of the communication antenna 105, and preventing the wind from blowing the communication antenna 105 to rotate. ;

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for adjusting the downtilt angle of a communication antenna, comprising a main shaft (101), and a bottom bracket (102) fixed on the main shaft (101), a plurality of mounting shafts (103) being evenly fixed in an annular shape on the upper end of the bottom bracket (102), and a screw rod (104) being rotatably connected to the side walls of the plurality of mounting shafts (103), characterized in that: Also includes: Communication antennas (105) rotatably connected to the plurality of mounting shafts (103), and sliding sleeves (106) slidably connected to the plurality of mounting shafts (103); The plurality of sliding sleeves (106) are all rotatably connected to connecting rods (107), and the ends of the plurality of connecting rods (107) are respectively rotatably connected to the plurality of communication antennas (105); A plurality of the sliding sleeves (106) are rotatably connected to a threaded sleeve (108), the plurality of the threaded sleeves (108) are respectively threadedly connected to a plurality of screw rods (104), and a friction assembly (7) is provided on the plurality of the sliding sleeves (106), the friction assembly (7) limiting the rotation of the threaded sleeve (108) on the sliding sleeve (106) through friction force; A plurality of the installation shafts (103) are each provided with a guide groove (109) at their lower parts, a plurality of the guide grooves (109) are each slidably connected with a lifting slide plate (110), a plurality of the lifting slide plates (110) are each fixedly connected with a compression spring (111) at their upper ends, and a distal end of the compression spring (111) is fixed to the upper end of the guide groove (109); The bottom bracket (102) is provided with a pushing mechanism (4), and the pushing mechanism (4) is used to overcome the elastic force of the first compression spring (111) and drive one of the lifting slides (110) to move upwards; The upper ends of the plurality of lifting slides (110) are all rotatably connected to a driving shaft (112); a synchronous rotation mechanism (2) is provided on the main shaft (101); the synchronous rotation mechanism (2) is used to drive the plurality of driving shafts (112) to rotate synchronously; A connection assembly (6) is disposed at the upper end of each of the plurality of drive shafts (112); when the lifting slide plate (110) drives the drive shaft (112) to move upward, the connection assembly (6) causes the drive shaft (112) and the screw rod (104) to be transmission-connected; A stop assembly (8) is provided on each of the plurality of mounting shafts (103), and the stop assembly (8) is used to limit the upward and downward movement of the sliding sleeve (106); when the lifting slide plate (110) moves upward, the stop assembly (8) releases the movement restriction of the sliding sleeve (106); The friction assembly (7) comprises a second sliding groove (701) provided in the sliding sleeve (106), and a friction sliding block (702) slidably connected in the second sliding groove (701); One end of the friction slider (702) contacts the side wall of the threaded sleeve (108), and the other end of the friction slider (702) is connected to a compression spring four (703), and the compression spring four (703) is arranged in the sliding groove two (701).

2. The device for adjusting the downtilt angle of a communication antenna according to claim 1, characterized in that: The synchronous rotation mechanism (2) comprises a rotating sleeve (201) rotatably connected to the main shaft (101), and an outer gear ring (202) fixed to the rotating sleeve (201); The upper end of the bottom bracket (102) is rotatably connected to a plurality of rotating shafts (203), a gear one (204) is fixed to each of the plurality of rotating shafts (203), and the plurality of gears one (204) are simultaneously meshed with an outer gear ring one (202); A rotating assembly (3) is provided on the bottom bracket (102), and the rotating assembly (3) is used to drive the rotating sleeve (201) to rotate; A synchronous pulley (205) is fixed on each of the plurality of rotating shafts (203); a synchronous pulley (205) is rotatably connected to each of the side walls of the plurality of mounting shafts (103); the synchronous pulley (205) on the rotating shaft (203) is connected to the synchronous pulley (205) on the side wall of the mounting shaft (103) via a synchronous belt (206); The driving shaft (112) passes through the synchronous belt wheel (205) on the side wall of the mounting shaft (103) and is slidably connected to the synchronous belt wheel (205).

3. The device for adjusting the downtilt angle of a communication antenna according to claim 2, characterized in that: The rotating assembly 1 (3) comprises a fixing plate (302) fixed on the side wall of the main shaft (101), a motor 1 (303) being fixed on the fixing plate (302), and a gear 2 (304) being fixed on the rotating end of the motor 1 (303); A second outer gear ring (301) is fixed on the rotating sleeve (201), and the second outer gear ring (301) is meshed with a second gear (304).

4. The device for adjusting the downtilt angle of a communication antenna according to claim 3, characterized in that: The pushing mechanism (4) comprises a pushing ring (401) rotatably connected to the main shaft (101), and a pushing portion (402) protrudes from a side wall of the pushing ring (401); The bottom bracket (102) is provided with a second rotating assembly (5), and the second rotating assembly (5) is used to drive the push ring (401) to rotate; A plurality of guide slots (403) are evenly arranged in an annular shape at the upper end of the bottom bracket (102), a sliding wedge (404) is slidably connected in each of the plurality of guide slots (403), a second compression spring (405) is arranged in the guide slot (403), and the second compression spring (405) is arranged at an end of the sliding wedge (404) away from the main shaft (101); The plurality of sliding wedge blocks (404) are each provided with an avoidance groove (406) for avoiding the rotating shaft (203).

5. The device for adjusting the downtilt angle of a communication antenna according to claim 4, characterized in that: The rotating assembly 2 (5) comprises a motor 2 (502) fixed on the bottom bracket (102), and a gear 3 (503) fixed on the rotating end of the motor 2 (502); An outer gear ring three (501) is fixed to the lower end of the push ring (401), and the outer gear ring three (501) is meshed with gear three (503).

6. The device for adjusting the downtilt angle of a communication antenna according to claim 1, characterized in that: The connection assembly (6) comprises a connection shoulder (601) fixed to the upper end of the drive shaft (112), and a plurality of sliding grooves (602) are evenly arranged in an annular manner on the upper portion of the connection shoulder (601); A plurality of connecting rods (603) are slidably connected in the sliding grooves (602), a plurality of lower ends of the connecting rods (603) are fixedly connected to compression springs (604), and the ends of the plurality of compression springs (604) are fixed in the plurality of sliding grooves (602); A plurality of connection holes (605) are evenly arranged in a ring shape at the lower end of the screw rod (104), and the plurality of connection holes (605) cooperate with the connection plug rod (603).

7. The device for adjusting the downtilt angle of a communication antenna according to claim 1, characterized in that: The stop assembly (8) comprises a slide groove (801) provided on the mounting shaft (103), a stop rod (802) being slidably connected in the slide groove (801), a compression spring (803) being connected to one end of the stop rod (802) away from the communication antenna (105), and the compression spring (803) being located in the slide groove (801); The installation shaft (103) is provided with a rope groove (804), a connecting rope (805) is provided in the rope groove (804), one end of the connecting rope (805) is fixed to an end of the stop rod (802) away from the communication antenna (105), and the other end of the connecting rope (805) is connected to the lower end of the lifting slide plate (110); A plurality of stop grooves (806) are linearly arranged at one end of the stop rod (802) close to the communication antenna (105); A second slide groove (807) is provided in the sliding sleeve (106), a stop shaft (808) is slidably connected in the second slide groove (807), a compression spring (809) is fixedly connected to one end of the stop shaft (808) away from the stop rod (802), and the compression spring (809) is connected in the second slide groove (807).

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