Mechanical transmission device for multi-angle self-adaptive adjustment of base station antenna

Abstract

The invention belongs to the technical field of base station antennas, and particularly relates to a base station antenna multi-angle self-adaptive adjustment mechanical transmission device which comprises an angle grinding frame, a control unit is arranged in a space on one side of the angle grinding frame, and a cleaning unit is arranged in a space on the other side of the angle grinding frame. The cable is additionally arranged between the base station antenna and the angle rod, when the base station antenna carries out inclination angle adjustment, the connection rigidity between the base station antenna and the angle rod is enhanced through the cable, and meanwhile the actual hoisting position of the arc light plate on the outer wall of the angle rod is dynamically adjusted; the traction force of the cable can be linearly changed along with the change of the inclination angle of the base station antenna synchronously, the system rigidity is dynamically adjusted in real time, the vibration amplitude is reduced, the coincidence between the vibration frequency and the inherent frequency of the system is changed to a certain extent, resonance damage is avoided, and fatigue accumulation of the movable connection point of the base station antenna is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of base station antennas, and in particular relates to a mechanical transmission device for multi-angle adaptive adjustment of a base station antenna. Background Art

[0002] Base station antenna: A key device in mobile communication networks, used to transmit and receive wireless signals. It is a core component for achieving mobile communication network coverage and communication functions. In specific implementation, it converts electrical signals into electromagnetic wave signals and transmits them, while simultaneously receiving electromagnetic wave signals transmitted by terminal devices and converting them into electrical signals, thereby achieving two-way communication functions of the communication network.

[0003] External vibrations such as natural wind vibration and equipment vibration are transmitted along the supporting structure in the form of mechanical waves. The active connection points become energy concentration areas due to the sudden change in stiffness. Dynamic load impacts are frequent, and alternating shear forces and bending moments are continuously generated, resulting in the accumulation of mechanical fatigue damage and ultimately plastic deformation between the connection points.

[0004] In addition, most base station antennas are array antennas, and each radiating element needs to maintain a precise spatial phase relationship to form a directional beam; vibration causes the antenna panel or oscillator to deform at the micron level, changing the element spacing and causing phase difference; thereafter, the beam downtilt angle shifts, the horizontal lobe width widens, the field strength at the cell edge decreases, and the coverage radius shrinks, resulting in a double loss of network coverage and capacity. Summary of the Invention

[0005] To solve the above problems, the present invention adopts the following technical solution: a mechanical transmission device for multi-angle adaptive adjustment of a base station antenna, comprising a substrate, an adjustment unit provided on one side of the substrate, a main unit provided in a space outside the substrate, and a buffer unit provided on one side of the adjustment unit;

[0006] The adjustment unit includes:

[0007] The ball head is hingedly installed in the middle of one end face of the base plate;

[0008] The pipe joint is hinged with a ball and is installed in the middle of the outer wall on the side where the ball head is away from the base plate;

[0009] The cable is telescopically mounted inside the pipe joint, with the other end of the cable extending out of the pipe joint;

[0010] A shaft connector, snap-fitted to the outer wall of the other end of the cable;

[0011] A mouth frame, clamped and installed between the pipe joint and the opposite surface of the shaft joint;

[0012] Shock absorber, installed in the middle of the outer wall of the cable;

[0013] A cake ring is mounted on the outer wall of the cable end close to the shaft joint;

[0014] The support plate is mounted on the middle position of the outer wall of one side of the cake ring;

[0015] The vertical plate is snap-fitted and installed in the middle position of the inner wall of the horizontal section of the opening frame.

[0016] Preferably, a rope is commonly clamped and installed between the vertical plate and the support plate, and an ear seat is symmetrically clamped and installed on the end face of the pipe joint near the mouth frame, and a roller is commonly rotated and installed between the two ear seats, and the roller pulls the rope, and a ball pin is installed in a ball hinge in the middle position of the end face of the shaft joint away from the pipe joint, and two cables extend through the ball pin, and the other cable is installed in a telescopic clamping fit inside the coaxial joint, and a ball is installed on the outer wall of the ball pin. An arc plate is provided in the space on the side of the ball away from the shaft joint, and an end plate is symmetrically clamped and installed on the end face of the arc plate near the shaft joint, and a pillar with a ball hinge installed with the same ball is commonly rotated and installed between the opposite surfaces of the two end plates. A rope is installed by common clamping, and an ear seat is symmetrically clamped on the end face of the pipe joint close to the mouth frame, and a roller is installed between the two ear seats to rotate and cooperate, and the roller pulls the rope. A ball pin is installed in a ball hinge in the middle position of the end face of the shaft joint away from the pipe joint, and two cables extend through the ball pin, and the other cable is installed by clamping inside the coaxial joint, and a ball is installed on the outer wall of the ball pin by a ball hinge. An arc plate is provided in the space on the side of the ball away from the shaft joint, and an end plate is symmetrically clamped on the end face of the arc plate close to the shaft joint, and a pillar hinged with the ball is installed between the opposite surfaces of the two end plates. A bridging column is installed on the end face of the cake ring close to the pipe joint in a circumferentially uniform manner.

[0017] Preferably, the outer walls of both ends of the shock absorber are snap-fitted with ring rails, and the end face of the ring rail away from the shock absorber is rotatably mounted with a mouth ring, the outer end face of the mouth ring is circumferentially evenly provided with a mouth groove, and the cross-section of the mouth groove is arc-shaped, the end face of the mouth ring away from the ring rail is rotatably mounted with a face ring, and the outer end face of the face ring is circumferentially evenly provided with a key groove that matches and corresponds to the key groove, and the inner wall of the mouth groove is slidingly snap-fitted with a corner column, and the end of the corner column away from the ring rail is snap-fitted with an elastic clamp, and the end of the elastic clamp is arc-chamfered at the end close to the axis of the ring rail, which is adapted to the end face of the outer wall of the cable, and the face ring is snap-fitted with a hanging plate in the middle position of the outer wall of the side of the mouth frame, and the middle position of the inner wall of the vertical section of the mouth frame close to the hanging plate is snap-fitted with a shock-absorbing column that is slidably snap-fitted with the hanging plate, and the outer wall of the shock-absorbing column is sleeved with a shock-absorbing spring located between the vertical section of the mouth frame and the hanging plate.

[0018] Preferably, a chassis is fixedly provided in the space on one side of the outer side of the substrate, and a corner rod is snap-fitted and installed in the middle position of the chassis. The outer wall of the corner rod is symmetrically snap-fitted and installed with an annular electric rail. The outer wall of the corner rod is evenly provided with corner grooves in the circumferential direction, and there are three of them. In addition, the arc plate and the corner groove are slidingly snap-fitted and installed, and the opposite surfaces of the annular electric rail are slidingly snap-fitted and installed with shaft disks. In addition, the shaft disk away from the end of the base is snap-fitted and installed with the tail stock, and the outer wall of the corner rod is snap-fitted and installed with symmetrically distributed shaft seats, and the shaft disk is located between the two shaft seats for connecting external devices.

[0019] Preferably, the main unit includes:

[0020] The base station antenna is detachably mounted on the end face of the base plate away from the cable by bolts;

[0021] There are two external hoops, which are symmetrically mounted at the middle of the end faces of the two ends of the base station antenna close to the cable.

[0022] The U-shaped frame is snap-fitted and installed in the middle of the end face of the outer hoop away from the base station antenna.

[0023] The swing arm is mounted on the end of the U-surface frame away from the outer hoop frame through a rotating shaft;

[0024] The crank arm is mounted on the end of the swing arm away from the outer hoop frame through the rotation of the shaft;

[0025] The tailstock is rotatably mounted in the middle of the crank arm away from the swing arm;

[0026] The outer opening frame is snap-fitted and mounted on the middle position of the end face of the outer hoop frame on the other side away from the base station antenna;

[0027] The inner mouth frame is rotatably mounted on the outer mouth frame at one end away from the outer hoop frame via a rotating shaft;

[0028] The mosaic plate is detachably mounted on the end of the inner frame away from the outer frame by means of bolts, and the mosaic plate is mounted in a clamping manner with the shaft disc close to the base.

[0029] Preferably, a side wire bracket is installed in a clamped state at the middle position of one end of the base station antenna away from the base, a sprocket is installed in a middle position of the side wire bracket away from the base station antenna through a rotating shaft, and the sprocket is installed in a clamped state with the cable extending from the ball pin, a grid guard plate is installed in a clamped state at the shaft disk on the side of the angle rod away from the base, and a sheet is symmetrically clamped and installed on the end face of the grid guard plate away from the axis of the angle rod, an angle plate is installed between the two sheets through a rotating shaft, and there are two angle plates, which are symmetrically distributed, a wire pulley is installed between the two angle plates for pulling and pre-tightening the cable, and a torsion spring is installed in a clamped state between the angle plate and the sheet.

[0030] Preferably, the buffer unit includes:

[0031] A vertical rod, hingedly mounted on an end of the other cable away from the ball pin;

[0032] The oil plug is snap-fitted to the end of the vertical rod away from the ball pin;

[0033] The end rack is mounted on the outer wall of the vertical rod near the ball pin;

[0034] The connecting rod is mounted on the middle position of the end surface of the arc plate close to the base;

[0035] The deflecting plate is snap-fitted and installed at the end of the connecting rod away from the arc plate; and the deflecting plate is slidably snap-fitted and installed with the angle groove;

[0036] The split rack is mounted on the middle of the end face of the deflecting plate away from the axis of the angle rod;

[0037] The wall panels are arranged in groups of two or more, or at least three groups, and are evenly snap-fitted and installed in the middle of the outer wall of the corner bar in a circumferentially uniform manner;

[0038] The end shaft is rotatably mounted between the two wall panels of the same group;

[0039] The gear is mounted in a snap-fit ​​position at the middle position of the outer wall of the end shaft, and is simultaneously meshed and mounted with the end rack and the split rack.

[0040] Preferably, the shaft disc near one side of the base is evenly circumferentially plugged with a shock absorber tube that is installed in a sliding and snap-fitting manner with the oil plug, an oil level spring is installed in a snap-fitting manner between the bottom wall of the shock absorber tube and the oil plug, and an oil groove is jointly provided between the shaft disc, the interlocking plate and the shock absorber tube near one end of the base, and a rubber nail is installed in a sliding and snap-fitting manner inside the oil groove.

[0041] A method for adaptively reducing vibration at the movable connection point of a base station antenna bracket adopts the mechanical transmission device with multi-angle adaptive adjustment of the base station antenna to implement vibration reduction. The specific steps are as follows:

[0042] S1: First, an external push rod (an electric push rod can be used in specific implementation) is used to push the base station antenna away from one end of the base. Under the joint support of the swing arm and the curved arm, the base station antenna is deflected a certain angle away from the axis of the angle rod. At this time, the cable is pulled and pre-tightened by the sprocket and the wire pulley, driving the arc plate to move a specified distance away from the base. Under the coordinated action of the arc plate, the end plate controls the pillar to force the ball bearing to drive the ball pin to move synchronously away from the base.

[0043] At the same time, the electric slider in the annular electric rail drives the mouth ring to rotate. During the rotation of the mouth ring, the corner post drives the elastic clamping claw to move away from the cable axis under the limitation of the mouth groove until the cable can generate relative movement with the elastic clamping claw.

[0044] S2: The support plate and the ring work together to pull the rope. At this time, the ear seat serves as a connecting bridge between the roller and the shock absorber, so that the two form a moving community. In this process, the roller acts as a movable pulley set. That is, when the ring moves synchronously with the cable, the roller reduces the movement distance of the shock absorber, so that the shock absorber is always in the middle area between the pipe joint and the shaft joint.

[0045] S3: Finally, under the control of the arc plate, the connecting rod synchronously prompts the refraction plate to drive the split rack to move away from the base. During this process, the split rack continuously engages with the gear. After that, the gear also engages with the end rack. The end rack controls the vertical rod to drive the other cable to move toward the base. The oil plug compresses the oil level spring. Under the action of oil squeezing, the rubber nail continuously strengthens the interaction force with the inner frame.

[0046] The present invention has the following beneficial effects:

[0047] 1. The present invention adds a cable between the base station antenna and the corner pole. When the base station antenna is tilted, the cable strengthens the connection stiffness between the base station antenna and the corner pole, and dynamically adjusts the actual hoisting position of the arc plate on the outer wall of the corner pole, so that the traction force of the cable can change linearly with the change of the tilt angle of the base station antenna, dynamically adjust the system stiffness in real time, reduce the vibration amplitude, and at the same time change the coincidence between the vibration frequency and the natural frequency of the system to a certain extent, avoid resonance damage, and reduce fatigue accumulation at the active connection points of the base station antenna.

[0048] 2. The present invention adds an ear seat to the outer wall of the shock absorber to promote the realization of a motion community between the shock absorber and the roller, and cooperates with the vertical plate, support plate and rope to form a movable pulley combination, so that when the cake ring synchronously follows the cable movement unit distance, the movable pulley group is used for the reduction treatment, so that the shock absorber as a whole synchronously follows the cable movement unit distance half, ensuring that when the force arm formed by the cable changes, the shock absorber is always located in the relative middle position between the pipe joint and the shaft joint, so that the shock absorber is always located at the vibration antinode position in the middle of the cable, that is, dynamically matching the vibration antinode, maintaining efficient energy absorption and buffering for the cable vibration capacity concentrated area, avoiding stiffness mutation, reducing external impact transmission efficiency, further improving the lifting stiffness, and making the two ends of the cable close to the "fixed beam at both ends" model, resulting in an increase in the natural frequency, away from the external impact frequency, avoiding the generation of resonance, reducing the angular vibration of the movable connection point, and effectively improving the service life of the corresponding parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0050] Figure 2 This is a three-dimensional structural diagram showing the adjustment unit, main unit and buffer unit in the present invention.

[0051] Figure 3 This invention is attached Figure 2 Front view of the structure.

[0052] Figure 4 This is a diagram showing the three-dimensional structure of the main unit in the present invention.

[0053] Figure 5 It is a three-dimensional display diagram of the local structure of the adjustment unit of the present invention.

[0054] Figure 6 This invention is attached Figure 5 A magnified schematic diagram of the local structure at point A.

[0055] Figure 7 This invention is attached Figure 5 Enlarged schematic diagram of the local structure at point B in the middle.

[0056] Figure 8 It is a three-dimensional display diagram of the local structure of the adjustment unit in the present invention.

[0057] Figure 9 This is a cross-sectional view showing the shock absorber of the present invention and its local structure.

[0058] Figure 10 This is a cross-sectional view of the buffer unit in the present invention.

[0059] Numbers in the figure: 1, base plate; 2, adjustment unit; 3, main unit; 4, buffer unit;

[0060] 11. Chassis; 12. Angle rod; 13. Annular rail; 14. Angle groove; 15. Axle disc; 16. Axle seat;

[0061] 21. Ball joint; 22. Pipe joint; 23. Cable; 24. Shaft joint; 25. Mouth bracket; 26. Shock absorber; 27. Cake ring; 28. Support plate; 29. ​​Vertical plate;

[0062] 211. Rope; 212. Ear seat; 213. Roller; 214. Ball pin; 215. Ball; 216. Arc plate; 217. End plate; 218. Pillar; 219. Bridge column;

[0063] 221, ring rail; 222, mouth ring; 223, mouth groove; 224, face ring; 225, corner post; 226, elastic clamping claw; 227, hanging plate; 228, shock-absorbing column; 229, shock-absorbing spring;

[0064] 31. Base station antenna; 32. External hoop frame; 33. U-shaped frame; 34. Swing arm; 35. Flex arm; 36. Tailstock; 37. External frame; 38. Internal frame; 39. Mosaic plate;

[0065] 311, edge wire bracket; 312, sprocket; 313, grid guard plate; 314, sheet plate; 315, angle plate; 316, wire wheel; 317, torsion spring;

[0066] 41. Vertical rod; 42. Oil plug; 43. End rack; 44. Connecting rod; 45. Deflector; 46. Spreader rack; 47. Wall plate; 48. End shaft; 49. Gear;

[0067] 411. Shock absorber tube; 412. Oil level spring; 413. Oil tank; 414. Rubber nail. DETAILED DESCRIPTION

[0068] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to 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.

[0069] It should be noted that the terms “vertical”, “horizontal”, “left”, “right” and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0070] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0071] Reference Figure 1 、 Figure 2 and Figure 3 It can be seen that a mechanical transmission device for multi-angle adaptive adjustment of a base station antenna 31 includes a substrate 1, an adjustment unit 2 is provided on one side of the substrate 1, a main unit 3 is provided in the outer space of the substrate 1, and a buffer unit 4 is provided on one side of the adjustment unit 2;

[0072] Reference Figure 1 and Figure 2 It can be seen that a chassis 11 is fixedly provided in the space on one side of the outer side of the substrate 1, and a corner rod 12 is snap-fitted and installed in the middle position of the chassis 11. The outer wall of the corner rod 12 is symmetrically snap-fitted and installed with an annular electric rail 13. The outer wall of the corner rod 12 is evenly provided with corner grooves 14 in the circumferential direction, and there are three of them. In addition, the arc plate 216 is snap-fitted and installed with the corner groove 14, and the opposite surfaces of the annular electric rail 13 are snap-fitted and installed with a shaft disc 15. In addition, the shaft disc 15 away from one end of the base is snap-fitted and installed with the tailstock 36. The outer wall of the corner rod 12 is snap-fitted and installed with symmetrically distributed shaft seats 16, and the shaft disc 15 is located between the two shaft seats 16 for connecting external devices.

[0073] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As can be seen, the main unit 3 includes: a base station antenna 31, which is detachably mounted on the end face of the base plate 1 away from the cable 23 by bolts; two outer hoop frames 32, which are symmetrically mounted on the middle position of the end face of the base station antenna 31 at both ends close to the cable 23; a U-face frame 33, which is mounted on the middle position of the end face of the outer hoop frame 32 away from the base, away from the base antenna 31; a swing arm 34, which is mounted on the end of the U-face frame 33 away from the outer hoop frame 32 by rotating through a rotating shaft; and a curved arm 35, which is mounted on the end of the swing arm 34 away from the outer hoop frame 32 by rotating through a rotating shaft.

[0074] The tailstock 36 is rotatably mounted on the middle position of the end of the crank arm 35 away from the swing arm 34; the outer frame 37 is clamped and mounted on the middle position of the end surface of the outer hoop frame 32 on the other side away from the base station antenna 31; the inner frame 38 is rotatably mounted on the outer frame 37 away from the end of the outer hoop frame 32 through a rotating shaft; the mosaic plate 39 is detachably clamped and mounted on the end of the inner frame 38 away from the outer frame 37 through bolts, and the mosaic plate 39 is clamped and mounted with the shaft disc 15 close to the base side.

[0075] Simple process of multi-angle movement of base station antenna 31:

[0076] First, the annular rail 13 provides stable support for the shaft disc 15. In specific implementation, the electric slider (externally connected between the shaft disc 15 and the outer wall of the annular rail 13) can drive the shaft disc 15 to rotate a specified angle under the support and guidance of the annular rail 13;

[0077] Then, the base station antenna 31 is pushed to move in the direction away from the axis of the corner bar 12 by an external electric push rod (in specific implementation, the electric push rod can be installed between the swing arm 34 and the curved arm 35, and the mounting base is hingedly mounted with the swing arm 34 and the curved arm 35). The U-surface frame 33 effectively increases the space margin between the swing arm 34 and the outer hoop frame 32, reducing the rotation blind angle range of the swing arm 34, improving the adjustable range of the inclination of the base station antenna 31, and ensuring the real-time transmission accuracy of the signal. At this time, the tailstock 36 provides a stable rotation environment for the curved arm 35 under the stable connection environment of the shaft disc 15. Under the rotation action of the curved arm 35, the swing arm 34 controls the base station antenna 31 to move away from one end of the base in the direction away from the axis of the corner bar 12.

[0078] Finally, the rotational coordination between the outer frame 37 and the inner frame 38 is adaptive to the rotation of the aforementioned swing arm 34 and the curved arm 35, providing angular compliance, fully ensuring the feasibility of implementing the vertical tilt adjustment scheme of the base station antenna 31 away from the axis of the corner pole 12;

[0079] In addition, the movable and detachable connection between the interlocking plate 39 and the inner frame 38 simplifies maintenance for maintenance personnel. Furthermore, the buffer unit 4, in conjunction with its impact resistance during tilt adjustment of the base station antenna 31 , dynamically adapts to external impact loads and adaptively adjusts the connection stiffness between the interlocking plate 39 and the inner frame 38 (breaking the unbuffered impact amplification effect of conventional rigid connections, reducing the "rigid short circuit" phenomenon of the corresponding force flow path, and preventing the aforementioned movable connection point from bearing instantaneous peak loads of external impact forces in real time), thereby keeping away from the natural frequency and reducing the generation of resonance.

[0080] Chassis 11 and axle seat 16: Under certain circumstances, they can be used as an expandable installation platform, and sensors, brackets and other structures can be added at any time without secondary processing, reducing installation costs. At the same time, they can implement distributed optimized load-bearing on the external structure to a certain extent, thereby improving the stability of the structure.

[0081] Reference Figure 2 、 Figure 3 、 Figure 4 and Figure 8 It can be seen that the adjustment unit 2 includes: a ball head 21, which is mounted in a ball-hinged manner in the middle of the end surface of one side of the base plate 1; a pipe joint 22, which is mounted in a ball-hinged manner in the middle of the outer wall of the ball head 21 away from the base plate 1; a cable 23, which is telescopically mounted inside the pipe joint 22, and the other end of the cable 23 extends out of the pipe joint 22; a shaft joint 24, which is clamped and mounted on the outer wall of the other end of the cable 23; a mouth frame 25, which is clamped and mounted between the opposite surfaces of the pipe joint 22 and the shaft joint 24; a shock absorber 26, which is sleeved and mounted in the middle of the outer wall of the cable 23; a cake ring 27, which is clamped and mounted on the outer wall of one end of the cable 23 close to the shaft joint 24; a support plate 28, which is clamped and mounted in the middle of the outer wall of one side of the cake ring 27; and a vertical plate 29, which is clamped and mounted in the middle of the inner wall of the horizontal section of the mouth frame 25.

[0082] Reference Figure 5 、 Figure 8 and Figure 9It can be seen that a rope 211 is commonly clamped and installed between the vertical plate 29 and the support plate 28, and an ear seat 212 is symmetrically clamped and installed on the end surface of the pipe joint 22 near the mouth frame 25. A roller 213 is installed between the two ear seats 212 to rotate and cooperate. The roller 213 pulls the rope 211. A ball pin 214 is installed in a ball hinge at the middle position of the end surface of the shaft joint 24 away from the pipe joint 22, and two cables 23 extend through the ball pin 214. The other cable 23 is clamped and installed inside the coaxial joint 24. A ball 215 is installed in a ball hinge on the outer wall of the ball pin 214. An arc plate 216 is provided in the space on the side of the ball 215 away from the shaft joint 24. An end plate 217 is symmetrically clamped and installed on the end surface of the arc plate 216 near the shaft joint 24. A pillar 218 that is ball-hinged and installed with the ball 215 is installed between the opposite surfaces of the two end plates 217.

[0083] Reference Figure 2 、 Figure 8 and Figure 9 It can be seen that the outer walls of both ends of the shock absorber 26 are snap-fitted with ring rails 221, and the end face of the ring rail 221 away from the shock absorber 26 is rotated and fitted with a mouth ring 222, and the outer end face of the mouth ring 222 is circumferentially uniformly provided with a mouth groove 223, and the cross section of the mouth groove 223 is arc-shaped, and the end face of the mouth ring 222 away from the ring rail 221 is rotated and fitted with a face ring 224, and the outer end face of the face ring 224 is circumferentially uniformly provided with a key groove that matches and corresponds to the key groove, and the inner wall of the mouth groove 223 is slidably snap-fitted with a corner column 225, and the corner column 225 is away from An elastic clamping claw 226 is mounted on one end of the ring rail 221, and an arc chamfer is processed on the end of the elastic clamping claw 226 near the axis of the ring rail 221 to match the end face of the outer wall of the cable 23. A hanging plate 227 is mounted on the middle position of the outer wall of the face ring 224 near the side of the mouth frame 25. A shock-absorbing column 228 is mounted on the middle position of the inner wall of the vertical section of the mouth frame 25 near the hanging plate 227, and is slidably engaged with the hanging plate 227. A shock-absorbing spring 229 is sleeved on the outer wall of the shock-absorbing column 228 and is located between the vertical section of the mouth frame 25 and the hanging plate 227.

[0084] Reference Figure 4 、 Figure 5 and Figure 6It can be seen that a side bracket 311 is installed in the middle position of one end of the base station antenna 31 away from the base, and a sprocket 312 is installed in the middle position of the side bracket 311 away from the base station antenna 31 through a rotating shaft, and the sprocket 312 is installed in a clip-on manner with the cable 23 extending from the ball pin 214, and a grid guard plate 313 is installed in a clip-on manner with the shaft disc 15 on the side of the angle rod 12 away from the base, and a sheet 314 is symmetrically installed on the end face of the grid guard plate 313 away from the axis of the angle rod 12, and an angle plate 315 is installed between the two sheets 314 through a rotating shaft, and there are two angle plates 315 and they are symmetrically distributed, and a wire pulley 316 is installed between the two angle plates 315 for pulling and pre-tightening the cable 23, and a torsion spring 317 is installed in a clip-on manner between the angle plate 315 and the sheet 314.

[0085] When the inclination angle of the base station antenna 31 is changed, the positions of the shock absorber 26 and the arc plate 216 change synchronously:

[0086] First, the sprocket 312, under the control of the side bracket 311, synchronously follows the movement of the base station antenna 31. At this time, the sprocket 312 drags the cable 23 (in this process, the cable 23 in the moving state is supported and pulled by the wire pulley 316. At the same time, the elastic variable of the torsion spring 317 provides a stable restoring support force between the angle plate 315 and the plate 314, always ensuring the elastic support of the wire pulley 316 for the cable 23. To a certain extent, the torsion spring 317 can absorb and buffer the impact vibration generated by the cable 23, thereby increasing the service life of the cable 23). After that, the ball pin 214 synchronously follows the cable 23 and moves a distance away from the base.

[0087] Next, through the movable connection between the shaft joint 24 and the ball 215, the ball 215 is caused to synchronously drive the pillar 218 to move a specified distance away from the base (the purpose of the hinged installation of the ball 215, the pillar 218, and the ball pin 214 is to fully release the freedom of the ball pin 214 in following the movement of the cable 23, avoid rigid collision limitation between the shaft joint 24 and the pillar 218, and ensure the synchronization and safety of the movement between the ball pin 214 and the cable 23). The connection continuity between the pillar 218, the end plate 217, and the arc plate 216 ensures that the arc plate 216 synchronously follows the cable 23 in moving away from the base.

[0088] Finally, under the control of the cable 23, the ring 27 drives the shock absorber 26 to move along the axis of the pipe joint 22 through the bridge column 219. During this process, the ear seat 212 promotes the unified movement of the roller 213 and the shock absorber 26. The support plate 28, the rope 211, the vertical plate 29 and the roller 213 together form a movable pulley group, which changes the consistency of the movement distance between the shock absorber 26 and the cable 23, so that the movement distance of the shock absorber 26 is half of the movement distance of the cable 23 (a single movement displacement of the cable 23 under the traction of the sprocket 312 changes the overall force arm length between the angle bar 12 and the base plate 1. Therefore, at this time, if the position of the shock absorber 26 remains unchanged, the overall change Δx of the force arm is twice the difference between the shock absorber 26 and the middle position of the changed force arm). This ensures that the middle area between the shock absorber 26 and the aforementioned force arm always coincides (ensuring that the shock absorber 26 always acts on the antinode position of the force arm, achieving continuous and efficient energy absorption and buffering).

[0089] The elastic clamping claw 226 cooperates with the ring 27 and the bridge column 219 to implement the movable adjustment process of the connection between the shock absorber 26 and the cable 23:

[0090] When the base station antenna 31 is tilted:

[0091] First, the ring 222 is supported and guided by the ring rail 221 (in specific implementation, the ring 222 can be driven by an electric slider to continuously move in a circular motion around the axis of the ring rail 221). In specific implementation, the inner diameter of the ring rail 221 is larger than the outer diameter of the cable 23.

[0092] Next, the corner post 225 in the rotating state is guided and limited by the slot 223 (in a specific implementation, a rigid connection between the face ring 224 and the ring rail 221 can be achieved through an external structure), so that the corner post 225 moves away from or towards the axis of the cable 23 along the slot 223 and the keyway.

[0093] Finally, under the synchronous action of the corner post 225 (and in specific implementation, a steel post can be added to the end of the elastic clamping jaw 226 near the cable 23 to further reduce the damage caused by the elastic clamping jaw 226 to the surface of the cable 23; at the same time, the elastic variable of the elastic clamping jaw 226 ensures the clamping stiffness between the elastic clamping jaw 226 and the cable 23, while alleviating the radial runout of the cable 23 to a certain extent). The elastic clamping jaw 226 is continuously engaged and disengaged with the cable 23 in different states or time periods, thereby adjusting the relative motion state between the shock absorber 26 and the cable 23 in real time (adapting to the tilt angle of the base station antenna 31).

[0094] Shock-absorbing spring 229 and shock-absorbing column 228 : similarly, the elastic clamping claw 226 can be referred to, which assists the shock absorber 26 in providing a certain amount of energy absorption and buffering for the axial impact on the cable 23 , while providing a certain amount of support for the resetting of the shock absorber 26 .

[0095] Reference Figure 1 、 Figure 7 and Figure 10 It can be seen that the buffer unit 4 includes: a vertical rod 41, which is hingedly mounted on the end of the other cable 23 away from the ball pin 214; an oil plug 42, which is clamped and mounted on the end of the vertical rod 41 away from the ball pin 214; an end rack 43, which is clamped and mounted on the outer wall of the end of the vertical rod 41 close to the ball pin 214; a connecting rod 44, which is clamped and mounted on the middle position of the end surface of the arc plate 216 close to the base; a deflecting plate 45, which is clamped and mounted on the end of the connecting rod 44 away from the arc plate 216; and the deflecting plate 45 is clamped and mounted on the angle groove 14. The slidable snap-fit ​​installation is carried out between them; the split rack 46 is snap-fitted and installed in the middle position of the end face of the deflecting plate 45 away from the axis of the corner bar 12; the wall panels 47 are arranged in groups of two, at least three groups, and are snap-fitted and installed in the middle position of the outer wall of the corner bar 12 in a circumferentially uniform manner; the end shaft 48 is rotatably installed between the two wall panels 47 of the same group; the gear 49 is snap-fitted and installed in the middle position of the outer wall of the end shaft 48, and the gear 49 is simultaneously meshed with the end rack 43 and the split rack 46;

[0096] Reference Figure 10 It can be seen that the shaft disc 15 near one side of the base is evenly inserted and installed in the circumferential direction with a shock-absorbing tube 411 that is slidably engaged with the oil plug 42, and an oil level spring 412 is jointly engaged and installed between the bottom wall of the shock-absorbing tube 411 and the oil plug 42. An oil groove 413 is jointly opened between the shaft disc 15 near one end of the base, the interlocking plate 39 and the shock-absorbing tube 411, and a rubber nail 414 is slidably engaged and installed inside the oil groove 413.

[0097] When the base station antenna 31 is tilted, the rubber nails 414 dynamically adjust the interference force between the interlocking plate 39 and the inner frame 38:

[0098] First, the connecting rod 44 controls the deflecting plate 45 to move away from (or toward) the base under the synchronous action of the arc plate 216. During this process, the dividing rack 46 synchronously follows the movement of the deflecting plate 45 until the dividing rack 46 meshes with the gear 49.

[0099] Then, during its movement, the indexing rack 46 continuously meshes with the gear 49. At the same time, the gear 49 meshes with the end rack 43. Thereafter, the end rack 43 synchronously controls the vertical rod 41 to drive the oil plug 42 toward the shock absorber tube 411 (in specific implementation, lubricating oil is filled between the oil plug 42 and the oil level spring 412, and a sealing ring is added at the connection end of the shock absorber tube 411 and the shaft disc 15 to fully reduce the probability of lubricating oil leaking to the outside).

[0100] Finally, when the oil plug 42 moves toward the shaft disc 15, the oil level spring 412 is compressed to a certain extent (through the elastic variable of the oil level spring 412 itself, a stable driving force is provided to the return movement of the vertical rod 41), and the rubber nail 414 linearly changes the interaction force between the interlocking plate 39 and the inner mouth frame 38 under the fluid squeezing action of the lubricating oil (cooperating with the linear change of the traction force of the aforementioned cable 23, the connection stiffness of the connection point between the interlocking plate 39 and the inner mouth frame 38 is dynamically adjusted (adapted to the inclination angle of the base station antenna 31), away from the natural frequency, and reducing the accumulation of mechanical fatigue damage caused by resonance).

[0101] The present invention provides a mechanical transmission device for adaptively adjusting the multi-angle of a base station antenna 31. The working principle is as follows: Step 1: First, an external push rod (in specific implementation, an electric push rod can be used) is used to push the base station antenna 31 away from one end of the base. Under the joint support of the swing arm 34 and the curved arm 35, the base station antenna 31 is deflected a certain angle away from the axis of the angle rod 12. At this time, the cable 23, under the joint traction and pre-tensioning action of the sprocket 312 and the wire pulley 316, drives the arc plate 216 to move a specified distance away from the base. Under the coordinated action of the arc plate 216, the end plate 217 controls the support pillar 218 to force the ball 215 to drive the ball pin 214 to move synchronously away from the base.

[0102] At the same time, the electric slider in the annular electric rail 13 drives the mouth ring 222 to rotate. During the rotation of the mouth ring 222, the corner post 225, under the restraining action of the mouth groove 223, drives the elastic clamping claw 226 to move away from the axis of the cable 23 until relative movement occurs between the cable 23 and the elastic clamping claw 226.

[0103] Step 2: The support plate 28 then pulls the rope 211 in coordination with the ring 27. At this time, the ear seat 212 serves as a connecting bridge between the roller 213 and the shock absorber 26, so that the two form a moving community. In this process, the roller 213 acts as a movable pulley set, that is, when the ring 27 synchronously follows the cable 23 to move a unit distance, the roller 213 reduces the moving distance of the shock absorber 26, so that the shock absorber 26 is always in the middle area between the pipe joint 22 and the shaft joint 24.

[0104] Step 3: Finally, through the connecting rod 44, under the control of the arc plate 216, the refraction plate 45 is synchronously driven to drive the dividing rack 46 to move away from the base. During this process, the dividing rack 46 continuously engages with the gear 49. After that, the gear 49 simultaneously engages with the end rack 43. The end rack 43 controls the vertical rod 41 to drive the other cable 23 to move toward the base. The oil plug 42 compresses the oil level spring 412. Under the action of oil squeezing, the rubber nail 414 continuously strengthens the interaction force with the inner mouth frame 38.

[0105] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0106] The above are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A mechanical transmission device for multi-angle adaptive adjustment of a base station antenna (31), comprising a substrate (1), characterized in that: An adjustment unit (2) is provided on one side of the substrate (1), a main body unit (3) is provided in the outer space of the substrate (1), and a buffer unit (4) is provided on one side of the adjustment unit (2); The regulating unit (2) comprises: A ball head (21) is hingedly mounted on the middle position of one end surface of the base plate (1); The pipe joint (22) is ball-hinged and mounted at the middle position of the outer wall of the ball head (21) on the side away from the base plate (1); A cable (23) is telescopically mounted inside the pipe joint (22), with the other end of the cable (23) extending out of the pipe joint (22); A shaft joint (24) is snap-fitted to the outer wall of the other end of the cable (23); A mouth frame (25) is mounted between the opposite surfaces of the pipe joint (22) and the shaft joint (24); A shock absorber (26) is sleeved and installed in the middle position of the outer wall of the cable (23); A cake ring (27) is mounted on the outer wall of one end of the cable (23) close to the shaft joint (24); A support plate (28) is mounted on the middle position of the outer wall of one side of the cake ring (27); The vertical plate (29) is mounted on the middle position of the inner wall of the horizontal section of the opening frame (25) by clamping.

2. A mechanical transmission device for multi-angle adaptive adjustment of a base station antenna (31) according to claim 1, characterized in that: A rope (211) is mounted between the vertical plate (29) and the support plate (28), and an ear seat (212) is mounted symmetrically on the end face of the pipe joint (22) close to the mouth frame (25). A roller (213) is mounted between the two ear seats (212) for rotation, and the roller (213) pulls the rope (211). A ball pin (214) is mounted on the middle position of the end face of the shaft joint (24) away from the pipe joint (22), and two cables (23) are extended through the ball pin (214). The other cable (23) is coaxial with the joint (2 4) Internal telescopic snap-fit ​​installation, a ball (215) is installed on the outer wall of one side of the ball pin (214) in a ball hinged manner, an arc plate (216) is provided in the space on the side of the ball (215) away from the shaft joint (24), an end plate (217) is symmetrically snap-fitted on the end face of the arc plate (216) close to the shaft joint (24), a pillar (218) is installed on the opposite surfaces of the two end plates (217) in a rotatable manner and is installed in a ball hinged manner with the ball (215), and a bridge column (219) is snap-fitted and installed on the end face of the cake ring (27) close to the pipe joint (22) in a circumferentially uniform manner.

3. A mechanical transmission device for multi-angle adaptive adjustment of a base station antenna (31) according to claim 2, characterized in that: The outer walls of both ends of the shock absorber (26) are mounted with ring rails (221) in a snap-fit ​​manner. The end face of the ring rail (221) away from the shock absorber (26) is rotatably mounted with a mouth ring (222). The outer end face of the mouth ring (222) is uniformly provided with a mouth groove (223) in the circumferential direction, and the cross section of the mouth groove (223) is arc-shaped. The end face of the mouth ring (222) away from the ring rail (221) is rotatably mounted with a face ring (224). The outer end face of the face ring (224) is uniformly provided with a key groove that matches and corresponds to the key groove in the circumferential direction. The inner wall of the mouth groove (223) is slidably mounted with a corner column (225). The corner column (225) is away from the ring rail. One end of (221) is clamped with an elastic clamp (226), and the elastic clamp (226) is chamfered at one end near the axis of the ring rail (221) to match the end face of the outer wall of the cable (23). The face ring (224) is clamped with a hanging plate (227) at the middle position of the outer wall of one side of the mouth frame (25). The middle position of the inner wall of the vertical section of the mouth frame (25) near the hanging plate (227) is clamped with a shock-absorbing column (228) that is slidably clamped with the hanging plate (227). The outer wall of the shock-absorbing column (228) is sleeved with a shock-absorbing spring (229) located between the vertical section of the mouth frame (25) and the hanging plate (227).

4. A mechanical transmission device for multi-angle adaptive adjustment of a base station antenna (31) according to claim 3, characterized in that: A chassis (11) is fixedly provided in the space on one side of the outer side of the substrate (1), and a corner bar (12) is snap-fitted and installed in the middle position of the chassis (11). The outer wall of the corner bar (12) is snap-fitted and installed with an annular electric rail (13) in a symmetrical shape. The outer wall of the corner bar (12) is evenly provided with corner grooves (14) in the circumferential direction, and the number is three. In addition, the arc plate (216) and the corner groove (14) are slidably snap-fitted and installed, and the opposite surfaces of the annular electric rail (13) are slidably snap-fitted and installed with a shaft disk (15). In addition, the shaft disk (15) away from one end of the base is snap-fitted and installed with the tail stock (36). The outer wall of the corner bar (12) is snap-fitted and installed with shaft seats (16) distributed in a symmetrical shape, and the shaft disk (15) is located between the two shaft seats (16) for connecting to external devices.

5. A mechanical transmission device for multi-angle adaptive adjustment of a base station antenna (31) according to claim 4, characterized in that: The main body unit (3) comprises: The base station antenna (31) is detachably mounted on the end surface of the base plate (1) away from the cable (23) by means of bolts; There are two outer hoop frames (32) symmetrically mounted on both ends of the base station antenna (31) at the middle position of the end surface near one side of the cable (23); A U-surface frame (33) is mounted on a central position of an end face of an outer hoop frame (32) on a side away from the base and away from the base station antenna (31); The swing arm (34) is mounted on one end of the U-surface frame (33) away from the outer hoop frame (32) through a rotating shaft; A crank arm (35) is mounted on an end of the swing arm (34) away from the outer hoop frame (32) via a rotating shaft; The tailstock (36) is rotatably mounted at a middle position of the crank arm (35) away from one end of the swing arm (34); The outer opening frame (37) is clamped and mounted on the outer hoop frame (32) on the other side at a middle position of an end face away from the base station antenna (31); The inner opening frame (38) is mounted on the outer opening frame (37) away from one end of the outer hoop frame (32) through a rotating shaft; The interlocking plate (39) is detachably mounted on the inner frame (38) at one end away from the outer frame (37) through bolts, and the interlocking plate (39) is mounted in a clip-fitting manner with the shaft disc (15) near the base side.

6. A mechanical transmission device for multi-angle adaptive adjustment of a base station antenna (31) according to claim 5, characterized in that: The base station antenna (31) is mounted with a side bracket (311) at a middle position away from one end of the base, and a sprocket (312) is mounted on the side bracket (311) at a middle position away from one end of the base station antenna (31) through a rotating shaft, and the sprocket (312) is mounted with the cable (23) extending from the ball pin (214) by a clamping connection, and a grid guard plate (313) is mounted on the shaft disc (15) at one side of the corner rod (12) away from the base, and the grid guard plate (313) is mounted away from the corner rod. (12) A sheet (314) is symmetrically mounted on the end face of one side of the axis. An angle plate (315) is mounted between the two sheet plates (314) by rotating the two sheet plates (314). The number of the angle plates (315) is two and they are symmetrically distributed. A wire wheel (316) is mounted between the two angle plates (315) for pulling and pre-tightening the cable (23). A torsion spring (317) is mounted between the angle plate (315) and the sheet plate (314).

7. A mechanical transmission device for multi-angle adaptive adjustment of a base station antenna (31) according to claim 4, characterized in that: The buffer unit (4) comprises: A vertical rod (41) is hingedly mounted on one end of the other cable (23) away from the ball pin (214); An oil plug (42) is mounted on the end of the vertical rod (41) away from the ball pin (214); An end rack (43) is mounted on the outer wall of one end of the vertical rod (41) close to the ball pin (214); A connecting rod (44) is mounted on the arc plate (216) at a middle position of an end surface close to the base; The deflecting plate (45) is snap-fitted and mounted on one end of the connecting rod (44) away from the arc plate (216); and the deflecting plate (45) is slide-fitted and mounted with the angle groove (14); A split rack (46) is mounted on the middle position of the end face of the deflecting plate (45) away from the axis of the angle rod (12); The wall panels (47) are arranged in groups of two or more, or in at least three groups, and are mounted in a circumferentially uniform snap-fit ​​manner on the middle of the outer wall of the corner bar (12); An end shaft (48) is rotatably mounted between the two wall panels (47) of the same group; The gear (49) is mounted in a clamping manner at the middle position of the outer wall of the end shaft (48), and the gear (49) is simultaneously engaged with the end position rack (43) and the split position rack (46).

8. A mechanical transmission device for multi-angle adaptive adjustment of a base station antenna (31) according to claim 7, characterized in that: The shaft disc (15) near one side of the base is evenly inserted and installed with a shock-absorbing tube (411) in a circumferential direction and is slidably engaged with the oil plug (42). An oil level spring (412) is installed between the bottom wall of the shock-absorbing tube (411) and the oil plug (42) in a slidable and engaged manner. An oil groove (413) is provided between the shaft disc (15), the interlocking plate (39) and the shock-absorbing tube (411) near one end of the base. A rubber nail (414) is installed in a slidable and engaged manner inside the oil groove (413).

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