Portable antenna elevation angle adjustment mechanism

Abstract

The present invention discloses a portable antenna elevation angle adjustment mechanism, which belongs to the field of antenna angle adjustment technology, and includes: a reflector, an angle adjustment mechanism, and an azimuth turntable. The angle adjustment mechanism includes: a pitch axis, a clutch, a clutch handle, a bearing, and a pitch turbine. The pitch axis has a cavity structure inside, the inner ring of the bearing is fixedly sleeved on the pitch axis, the inner ring of the pitch turbine is fixedly sleeved on the outer ring of the bearing, and the clutch includes: a cylindrical seat and an annular disc fixedly sleeved on the cylindrical seat, a side surface of the annular disc is fixedly provided with a plurality of teeth distributed along the axial direction, and a pair of relatively positioned protrusions are provided on the inner ring of the annular disc. The present invention is simple and easy to operate through the angle adjustment mechanism provided, and a single person only needs to turn a knob to complete the pitch angle adjustment.

Description

Technical Field

[0001] The invention relates to the technical field of antenna angle adjustment, and in particular to an elevation angle adjustment mechanism for a portable antenna. Background Art

[0002] Antennas are communications equipment used outdoors and in work environments, such as disaster relief areas, combat zones, deserts, and the wild. During use, the antenna must always keep the focus of the antenna surface aligned with the phase center of the feed source.

[0003] Most of the multi-frequency manual portable antennas currently on the market have the problem of inconvenient pitch angle adjustment, inability to perform quick adjustment and fine adjustment, and secondly, the pitch locking mechanism is inconvenient to operate.

[0004] In view of this, a mechanism is designed to facilitate adjusting the elevation angle of the antenna. Summary of the invention

[0005] In view of the above problems, the present invention provides a portable antenna elevation angle adjustment mechanism.

[0006] The technical solution adopted by the present invention is: a portable antenna elevation angle adjustment mechanism, comprising: a reflector, an angle adjustment mechanism, and an azimuth turntable.

[0007] The angle adjustment mechanism includes: a pitch axis, a clutch, a clutch handle, a bearing and a pitch turbine.

[0008] The interior of the pitch axis is a hollow structure.

[0009] The inner ring of the bearing is fixedly sleeved on the pitch axis.

[0010] The inner ring of the pitch turbine is fixedly sleeved on the outer ring of the bearing.

[0011] The clutch comprises: a cylindrical seat and an annular disc fixedly sleeved on the cylindrical seat,

[0012] A plurality of teeth distributed along the axial direction are fixedly arranged on one side surface of the annular disc.

[0013] A pair of protrusions located opposite to each other are provided on the inner ring of the annular disc.

[0014] The cylindrical seat is sleeved in the cavity, and a spring is embedded between one end of the cylindrical seat and the bottom of the cavity.

[0015] The clutch handle is sleeved in the cavity, one end of the clutch handle contacts the other end of the cylindrical seat, and the other end of the clutch handle extends out of the cavity.

[0016] The teeth are meshed with the pitch turbine, and the pitch shaft is provided with a through groove adapted to the position of the protrusion;

[0017] The reflector is fixedly connected to the outer wall of the pitch axis through a back frame,

[0018] One end of the pitch axis is sleeved with an end cover for protecting the angle adjustment mechanism.

[0019] The other end of the pitch axis is sleeved with a pitch axis locking bracket.

[0020] Wherein, an angle fine-tuning mechanism is fixedly connected to the bottom of the end cover, and the lower end of the angle fine-tuning mechanism is fixedly connected to the upper end surface of the azimuth turntable.

[0021] The lower end of the pitch axis locking bracket is fixedly connected to the upper end surface of the azimuth turntable, and when the angle fine-tuning mechanism is adjusted, the pitch axis can rotate on the pitch axis locking bracket.

[0022] Furthermore, an angle fine-tuning mechanism is fixedly connected to the bottom of the end cover, and the lower end of the angle fine-tuning mechanism is fixedly connected to the upper end surface of the azimuth turntable.

[0023] The lower end of the pitch axis locking bracket is fixedly connected to the upper end surface of the azimuth turntable, and when the angle fine-tuning mechanism is adjusted, the pitch axis can rotate on the pitch axis locking bracket.

[0024] The angle fine-tuning mechanism comprises: a box and a pitch worm,

[0025] The box is fixedly connected to the upper end surface of the azimuth turntable.

[0026] The pitch worm is arranged in the housing, and the pitch worm is meshed with the pitch turbine.

[0027] One end of the pitch worm is connected to the inner wall of the box through a bearing, the other end of the pitch worm passes through the side wall of the box, and the end of the protruding end is fixedly connected to a first knob.

[0028] A bearing is provided at a contact position between the extended portion of the pitch worm and the box body.

[0029] Furthermore, a pitch scale ring is sleeved on the pitch axis.

[0030] The pitch scale ring is close to the pitch axis locking bracket, and the pitch scale ring is fixedly sleeved on the pitch axis.

[0031] Furthermore, the pitch axis locking bracket comprises: a base and a locking sleeve,

[0032] The locking is a clamp structure, and the locking sleeve is sleeved on the pitch axis.

[0033] The joint flanges on both sides of the clamp are provided with threaded holes, and locking handle screws are screwed between the threaded holes.

[0034] A second knob is provided at one end of the locking handle screw, and when the second knob is turned, the locking handle screw can lock the clamp.

[0035] One of the joint flanges on both sides of the clamp is longer than the other joint flange.

[0036] The lower end of the longer joint flange is fixedly connected to the upper end of the base.

[0037] The lower end of the base is fixedly connected to the upper end surface of the azimuth turntable.

[0038] Furthermore, the locking handle screw comprises: a first screw and a second screw,

[0039] The first screw has a smaller diameter than the second screw,

[0040] The first screw is screwed into the threaded hole, and one end of the first screw is fixedly connected to one end of the second screw.

[0041] The other end of the second screw rod is fixedly connected to the second knob.

[0042] Furthermore, a scale mark groove is provided on the locking sleeve.

[0043] Furthermore, the back frame includes: a left back frame, a right back frame and a back frame connecting plate,

[0044] The left back frame and the right back frame are arranged in parallel on the pitch axis,

[0045] The upper ends of the left back frame and the right back frame are fixedly connected via the back frame connecting plate.

[0046] The lower ends of the left back frame and the right back frame are fixedly sleeved on the pitch axis.

[0047] Wherein, the reflector is fixedly connected to the left back frame and the right back frame.

[0048] Furthermore, the left back frame and the right back frame are provided with bosses for supporting the reflector.

[0049] Furthermore, the connection ends of the left back frame and the right back frame with the pitch axis are in a hoop structure.

[0050] Wherein, the clamp is fastened to the pitch axis by screws.

[0051] Furthermore, a rubber pad is provided on the inner wall of the clamp.

[0052] Beneficial effects of the present invention:

[0053] 1. Through the angle adjustment mechanism, the offset-feed parabolic antenna can be quickly unfolded to the approximate working position in the stowed state, and the pitch angle can be further fine-tuned. After the angle adjustment is completed, the pitch angle can be further locked.

[0054] 2. The entire angle adjustment process is simple and easy to operate. A single operator only needs to turn the hand wheel to complete the pitch angle adjustment.

[0055] 3. The locking bracket can eliminate the side clearance of the mechanical mechanism, and the alignment accuracy is high and the stability is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0057] Figure 1 is a schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0058] Figure 2 is a side structural schematic diagram of an embodiment of the present invention;

[0059] Figure 3 is a schematic diagram of the cross-sectional structure of an embodiment of the present invention;

[0060] Figure 4 is a schematic diagram of the structure of a clutch handle according to an embodiment of the present invention;

[0061] Figure 5 is a schematic diagram of a clutch structure according to an embodiment of the present invention;

[0062] Figure 6 is a schematic diagram of a pitch turbine structure according to an embodiment of the present invention;

[0063] Figure 7 is a schematic diagram of the pitch axis locking bracket structure of an embodiment of the present invention;

[0064] Figure 8 is a schematic diagram of a bearing connection structure according to an embodiment of the present invention;

[0065] Fig. 9 is a schematic diagram of the screw structure of a locking handle according to an embodiment of the present invention;

[0066] Fig.10 2 is a schematic diagram of the back frame structure of an embodiment of the present invention.

[0067] Reference numerals:

[0068] 1 is a reflector, 2 is an azimuth turntable, 3 is a pitch axis, 4 is a clutch, 41 is a cylindrical seat, 42 is an annular disk, 43 is a protrusion, 5 is a clutch handle, 6 is a bearing, 7 is a pitch turbine, 8 is a spring, 9 is a pitch axis locking bracket, 91 is a base, 92 is a locking sleeve, 10 is a box body, 11 is a pitch worm, 12 is a first knob, 13 is a locking handle screw, 131 is a first screw, 132 is a second screw, 14 is a second knob, 15 is a left back frame, 16 is a right back frame, and 17 is a back frame connecting plate. DETAILED DESCRIPTION

[0069] 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 used to limit the present invention.

[0070] See also Figures 1 to 5 ,like Figures 1 to 5 As shown, a portable antenna elevation angle adjustment mechanism comprises: a reflector 1, an angle adjustment mechanism, and an azimuth turntable 2.

[0071] The angle adjustment mechanism includes: a pitch axis 3, a clutch 4, a clutch handle 5, a bearing 6 and a pitch turbine 7.

[0072] The interior of the pitch axis 3 is a hollow structure.

[0073] The inner ring of the bearing 6 is fixedly sleeved on the pitch axis 3.

[0074] The inner ring of the pitch turbine 7 is fixedly sleeved on the outer ring of the bearing 3.

[0075] The clutch 4 comprises a cylindrical seat 41 and an annular disc 42 fixedly sleeved on the cylindrical seat.

[0076] A plurality of teeth distributed along the axial direction are fixedly disposed on one side surface of the annular disc 42.

[0077] A pair of protrusions 43 are provided on the inner ring of the annular disc 42.

[0078] The cylindrical seat 41 is sleeved in the cavity, and a spring 8 is embedded between one end of the cylindrical seat 41 and the bottom of the cavity.

[0079] The clutch handle 5 is sleeved in the cavity, one end of the clutch handle 5 contacts the other end of the cylindrical seat 41, and the other end of the clutch handle 5 extends out of the cavity.

[0080] The teeth are meshed with the pitch turbine 7, and a through groove adapted to the position of the protrusion 43 is provided on the pitch shaft 3;

[0081] The reflector 1 is fixedly connected to the outer wall of the pitch axis 3 via a back frame.

[0082] One end of the pitch axis 3 is sleeved with an end cover for protecting the angle adjustment mechanism.

[0083] The other end of the pitch axis 3 is sleeved with a pitch axis locking bracket 9.

[0084] The bottom of the end cover is fixedly connected with an angle fine-tuning mechanism, and the lower end of the angle fine-tuning mechanism is fixedly connected with the upper end surface of the azimuth turntable 2.

[0085] The lower end of the pitch axis locking bracket 9 is fixedly connected to the upper end surface of the azimuth turntable, and the pitch axis 3 can rotate on the pitch axis locking bracket 9 by adjusting the angle fine-tuning mechanism.

[0086] It should be noted that the main inventive points of the present invention are, firstly, the setting of the angle adjustment mechanism can enable a single person to quickly adjust the pitch angle of the reflector; secondly, the setting of the angle fine-tuning mechanism can achieve fine-tuning of the angle of the reflector, which is convenient for precise control of the angle; thirdly, the setting of the pitch axis locking bracket can eliminate the side clearance of the mechanical mechanism caused by the effect of wind on the reflector, thereby improving the stability of the entire adjustment mechanism.

[0087] The angle adjustment process is as follows: by pressing the clutch handle, the clutch is driven to slide along the pitch axis, and at the same time the spring is compressed, causing the teeth to separate from the pitch turbine;

[0088] Next, rotate the reflector to drive the pitch axis to rotate a certain angle, then release the clutch handle. Under the action of the spring, the clutch returns to its original position, the teeth re-engage with the pitch turbine, the pitch axis position is limited, and no more rotation occurs, thus completing the angle adjustment of the reflector.

[0089] In addition, the pitch turbine structure is an annular disc structure, and a plurality of transmission teeth are arranged on the side of its outer ring, wherein one end face is provided with angle adjustment teeth meshing with the teeth on the annular disc, and the other end face is provided with an annular sleeve which is the same as the embedded bearing.

[0090] In order to protect the pitch turbine, an end cover is arranged on the outside thereof, and the end cover includes: a left end cover and a right end cover, and the left end cover and the right end cover are respectively located on both sides of the pitch turbine and fixedly connected to the pitch turbine;

[0091] In order to better connect the left end cover to the pitch axis, a supporting copper sleeve is provided between the left end cover and the pitch axis for connection, and a sealing ring is provided between the supporting copper sleeve and the left end cover.

[0092] A pitch axis end cover is provided between the right end cover and the pitch axis and is sleeved on the end of the pitch axis, wherein the pitch axis end cover is a bottle cap structure and a through hole is provided on the pitch axis end cover, wherein one end of the clutch handle passes through the through hole and the other end extends into the through hole.

[0093] The clutch handle functions as a button, and its structure is as follows: two hollow cylindrical tubes of different diameters are connected as one piece, and the cross-section is T-shaped, wherein the large-diameter cylindrical tube is located in the cavity, and the small-diameter cylindrical tube passes through the through hole on the pitch axis end cover, and passes through the end cover. When the clutch handle is pressed, the spring can be compressed.

[0094] The azimuth turntable is equivalent to the function of a support frame, which is mainly used to support various mechanisms. In order to increase the overall stability, a through positioning hole is opened on the azimuth turntable, and then the fastening screws are screwed into the positioning hole to connect with the ground or other components, thereby fixing the position of the azimuth turntable.

[0095] The function of the bearing is to support the pitch turbine and facilitate the rotation of the pitch turbine.

[0096] In one embodiment of the present invention, an angle fine-tuning mechanism is fixedly connected to the bottom of the end cover, and the lower end of the angle fine-tuning mechanism is fixedly connected to the upper end surface of the azimuth turntable 2.

[0097] The lower end of the pitch axis locking bracket 9 is fixedly connected to the upper end surface of the azimuth turntable 2, and when the angle fine-tuning mechanism is adjusted, the pitch axis 3 can rotate on the pitch axis locking bracket 9.

[0098] The angle fine-tuning mechanism comprises: a box 10 and a pitch worm 11,

[0099] The box 10 is fixedly connected to the upper end surface of the azimuth turntable 2.

[0100] The pitch worm 11 is disposed in the housing 10, and the pitch worm 11 is meshed with the pitch turbine 7.

[0101] One end of the pitch worm 7 is connected to the inner wall of the box 10 through a bearing, and the other end of the pitch worm 7 passes through the side wall of the box 10, and the end of the protruding end is fixedly connected to the first knob 12.

[0102] A bearing is provided at the contact position between the extended portion of the pitch worm 7 and the housing 10 .

[0103] It should be noted that the process of angle fine-tuning is: turning the first knob to drive the pitch worm to rotate, and then driving the pitch turbine to rotate. Because the clutch is engaged with the pitch turbine, the pitch turbine cannot rotate alone. Therefore, when the pitch worm rotates, the pitch turbine drives the pitch axis to rotate, thereby changing the pitch angle of the reflector and realizing the process of angle fine-tuning.

[0104] Among them, the functions of the box are, first, to support the pitch worm; second, to protect the pitch worm. Since the entire adjustment mechanism is in the outside world, the box can effectively prevent the pitch worm from being eroded by foreign objects and rainwater.

[0105] The pitch worm is equivalent to a screw. Its main function is to mesh the teeth on the pitch worm with the driving teeth on the pitch turbine, thereby realizing the mechanical transmission process in which the pitch turbine is driven to rotate when the pitch worm rotates.

[0106] In one embodiment of the present invention, a pitch scale ring is sleeved on the pitch axis 3.

[0107] The pitch scale ring is close to the pitch axis locking bracket 9 , and the pitch scale ring is fixedly sleeved on the pitch axis 3 .

[0108] It should be noted that the function of the pitch scale ring is to determine the rotation angle of the reflector by observing the angle through which the pitch scale ring rotates when adjusting the angle of the emitter, thereby achieving precise control of the angle of the reflector.

[0109] In order to prevent the pitch scale ring from wearing out with the pitch axis locking bracket during rotation, an elastic retaining ring for the shaft may be provided between the two for isolation.

[0110] In one embodiment of the present invention, the pitch axis locking bracket 9 comprises: a base 91 and a locking sleeve 92.

[0111] The locking sleeve 92 is a clamp structure, and the locking sleeve 92 is sleeved on the pitch axis 3.

[0112] The joint flanges on both sides of the clamp are provided with threaded holes, and a locking handle screw 13 is screwed between the threaded holes.

[0113] A second knob 14 is provided at one end of the locking handle screw 13, and when the second knob 14 is turned, the locking handle screw 13 can lock the clamp.

[0114] One of the joint flanges on both sides of the clamp is longer than the other joint flange.

[0115] The lower end of the longer joint flange is fixedly connected to the upper end of the base 91.

[0116] The lower end of the base 91 is fixedly connected to the upper end surface of the azimuth turntable 2 .

[0117] In one embodiment of the present invention, the locking handle screw 13 includes: a first screw 131 and a second screw 132.

[0118] The diameter of the first screw 131 is smaller than that of the second screw 132.

[0119] The first screw rod 131 is screwed into the threaded hole, and one end of the first screw rod 131 is fixedly connected to one end of the second screw rod 132.

[0120] The other end of the second screw rod 132 is fixedly connected to the second knob 14 .

[0121] It should be noted that the function of the pitch axis locking is to lock the pitch axis to prevent the pitch axis from rotating after the angle adjustment is completed.

[0122] The specific process is: by driving the second knob, the locking handle screw is driven to rotate. In this process, the first screw and the second screw rotate at the same time, and the first screw is gradually screwed into the threaded hole. Because the diameter of the second screw is larger than that of the second screw, when the first screw is completely screwed into the threaded hole, the end face of the second screw contacts the shorter joint flange. In the process of continuously rotating the second screw, the second screw squeezes the shorter joint flange, so that the distance between the two joint flanges becomes smaller, thereby reducing the inner diameter of the clamp, and then achieving locking of the pitch axis.

[0123] In one embodiment of the present invention, a scale mark groove is provided on the locking sleeve 92 .

[0124] Among them, the function of the scale mark groove is to facilitate the observation of the angle of rotation of the pitch scale ring during rotation.

[0125] In one embodiment of the present invention, the back frame includes: a left back frame 15, a right back frame 16 and a back frame connecting plate 17.

[0126] The left back frame 15 and the right back frame 16 are arranged in parallel on the pitch axis 3.

[0127] The upper ends of the left back frame 15 and the right back frame 16 are fixedly connected by the back frame connecting plate 17.

[0128] The lower ends of the left back frame 15 and the right back frame 16 are fixedly sleeved on the pitch axis 3.

[0129] The reflector 1 is fixedly connected to the left back frame 15 and the right back frame 16 .

[0130] In one embodiment of the present invention, bosses for supporting the reflector 1 are provided on the left back frame 15 and the right back frame 16 .

[0131] In one embodiment of the present invention, the connection ends of the left back frame 15 and the right back frame 16 with the pitch axis 3 are in a clamp structure.

[0132] The clamp is fastened to the pitch axis 3 by screws.

[0133] It should be noted that the main function of the back frame is to carry the reflector, and the connecting end of the back frame and the pitch axis is set as a clamp structure, the main function of which is to facilitate installation and disassembly. In order to increase the connection stability between the back frame and the pitch axis, threaded holes are opened on the clamp and the pitch axis, and then connected by slotted cone-end set screws.

[0134] In one embodiment of the present invention, a rubber pad is provided on the inner wall of the clamp.

[0135] Among them, the function of the rubber pad is to increase the friction between the back frame and the pitch axis, increase the stability of the back frame after being connected to the pitch axis, and reduce the probability of a small angle rotation between the back frame and the pitch axis when the launcher is affected by wind or external force.

[0136] The portable antenna elevation angle adjustment mechanism provided by the present invention is used when the elevation angle needs to be quickly adjusted:

[0137] Slightly turn the second knob on the pitch axis lock to reduce the force between the pitch axis lock and the pitch axis.

[0138] Next, the clutch handle is pressed by hand, and the clutch handle moves toward the cavity, and the clutch is compressed, thereby driving the spring in the cavity to be compressed, so that the teeth on the clutch annular disc are separated from the pitch worm gear from the meshing state;

[0139] Next, rotate the reflector, which drives the pitch axis to rotate. The rotation angle is determined by observing the pitch scale ring, thereby completing the rapid adjustment of the pitch angle.

[0140] Next, after the angle is determined, release the clutch handle and push the clutch to the initial state through the elastic force of the spring, so that the teeth on the clutch annular disk engage with the pitch worm gear. Then, turn the second knob to make the pitch axis locking bracket lock the pitch axis, thus completing the pitch angle adjustment of the reflector.

[0141] When fine-tuning the pitch angle is required, slightly turn the second knob on the pitch axis lock to reduce the force between the pitch axis lock and the pitch axis.

[0142] Next, turn the first knob to drive the pitch worm to rotate, and the pitch worm drives the pitch worm wheel to rotate. Because the pitch turbine and the clutch are in a meshing state, the pitch turbine drives the reflector to rotate when it rotates, thereby completing the fine-tuning of the antenna surface pitch angle.

[0143] Since the worm gear mechanism itself has a certain side clearance, when the wind load is large, there may be a certain backlash, causing the antenna surface to shake slightly. At this time, you only need to turn the second knob to make the pitch locking bracket hold the pitch axis, thereby locking the pitch angle of the antenna surface.

[0144] 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, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable antenna elevation angle adjustment mechanism, characterized in that: include: Reflector, angle adjustment mechanism, azimuth turntable, The angle adjustment mechanism includes: a pitch axis, a clutch, a clutch handle, a bearing and a pitch turbine. The interior of the pitch axis is a hollow structure. The inner ring of the bearing is fixedly sleeved on the pitch axis. The inner ring of the pitch turbine is fixedly sleeved on the outer ring of the bearing. The clutch comprises: a cylindrical seat and an annular disc fixedly sleeved on the cylindrical seat, A plurality of teeth distributed along the axial direction are fixedly arranged on one side surface of the annular disc. A pair of protrusions located opposite to each other are provided on the inner ring of the annular disc. The cylindrical seat is sleeved in the cavity, and a spring is embedded between one end of the cylindrical seat and the bottom of the cavity. The clutch handle is sleeved in the cavity, one end of the clutch handle contacts the other end of the cylindrical seat, and the other end of the clutch handle extends out of the cavity. The teeth are meshed with the pitch turbine, and the pitch shaft is provided with a through groove adapted to the position of the protrusion; The reflector is fixedly connected to the outer wall of the pitch axis through a back frame, One end of the pitch axis is sleeved with an end cover for protecting the angle adjustment mechanism. The other end of the pitch axis is sleeved with a pitch axis locking bracket; The bottom of the end cover is fixedly connected with an angle fine-tuning mechanism, and the lower end of the angle fine-tuning mechanism is fixedly connected to the upper end surface of the azimuth turntable. The lower end of the pitch axis locking bracket is fixedly connected to the upper end surface of the azimuth turntable, and when the angle fine-tuning mechanism is adjusted, the pitch axis can rotate on the pitch axis locking bracket. The angle fine-tuning mechanism comprises: a box and a pitch worm, The box is fixedly connected to the upper end surface of the azimuth turntable. The pitch worm is arranged in the housing, and the pitch worm is meshed with the pitch turbine. One end of the pitch worm is connected to the inner wall of the box through a bearing, the other end of the pitch worm passes through the side wall of the box, and the end of the protruding end is fixedly connected to a first knob. A bearing is provided at a contact position between the extended portion of the pitch worm and the box body.

2. The portable antenna elevation angle adjustment mechanism according to claim 1, characterized in that: The pitch axis is sleeved with a pitch scale ring. The pitch scale ring is close to the pitch axis locking bracket, and the pitch scale ring is fixedly sleeved on the pitch axis.

3. The portable antenna elevation angle adjustment mechanism according to claim 1, characterized in that: The pitch axis locking bracket comprises: a base and a locking sleeve, The locking sleeve is a clamp structure, and the locking sleeve is sleeved on the pitch axis. The joint flanges on both sides of the clamp are provided with threaded holes, and locking handle screws are screwed between the threaded holes. A second knob is provided at one end of the locking handle screw, and when the second knob is turned, the locking handle screw can lock the clamp. One of the joint flanges on both sides of the clamp is longer than the other joint flange. The lower end of the longer joint flange is fixedly connected to the upper end of the base. The lower end of the base is fixedly connected to the upper end surface of the azimuth turntable.

4. The portable antenna elevation angle adjustment mechanism according to claim 3, characterized in that: The locking handle screw comprises: a first screw and a second screw, The first screw has a smaller diameter than the second screw, The first screw is screwed into the threaded hole, and one end of the first screw is fixedly connected to one end of the second screw. The other end of the second screw rod is fixedly connected to the second knob.

5. The portable antenna elevation angle adjustment mechanism according to claim 3, characterized in that: The locking sleeve is provided with a scale mark groove.

6. The portable antenna elevation angle adjustment mechanism according to claim 1, characterized in that: The back frame comprises: a left back frame, a right back frame and a back frame connecting plate, The left back frame and the right back frame are arranged in parallel on the pitch axis, The upper ends of the left back frame and the right back frame are fixedly connected via the back frame connecting plate. The lower ends of the left back frame and the right back frame are fixedly sleeved on the pitch axis. Wherein, the reflector is fixedly connected to the left back frame and the right back frame.

7. The portable antenna elevation angle adjustment mechanism according to claim 6, characterized in that: The left back frame and the right back frame are provided with bosses for supporting the reflector.

8. The portable antenna elevation angle adjustment mechanism according to claim 6, characterized in that: The connection ends of the left back frame and the right back frame with the pitch axis are in a hoop structure, Wherein, the clamp is fastened to the pitch axis by screws.

9. The portable antenna elevation angle adjustment mechanism according to claim 8, characterized in that: A rubber pad is arranged on the inner wall of the clamp.

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