CN211578948U

CN211578948U - Angle adjusting rack for broadcast television antenna

Info

Publication number: CN211578948U
Application number: CN202020699017.1U
Authority: CN
Inventors: 高洁; 高彬
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2020-09-25
Anticipated expiration: 2030-04-29

Abstract

The utility model discloses a radio and television antenna angle modulation frame, it belongs to broadcasting and TV engineering technical field. The antenna adjusting frame overcomes the defects that the traditional antenna adjusting frame is difficult to adjust and cannot accurately call out the optimal signal of the aerial antenna in the prior art. The main structure of the device comprises a weight plate, universal wheels are arranged below the weight plate, a shell is arranged above the weight plate, a support table is arranged at the upper end of the shell, a first air cylinder, a lead screw, a first bevel gear and a second bevel gear are arranged in the shell, the lower end of the lead screw is arranged on the weight plate, external threads are arranged at the upper end of the lead screw, an internal thread matched with the external threads of the lead screw is arranged on a rod of the first air cylinder, the second bevel gear is fixedly arranged on the lead screw, the first bevel gear is in meshing transmission connection with the second bevel; a second cylinder is arranged in the supporting table, and a rodless cavity of the first cylinder is communicated with a rodless cavity of the second cylinder through a rubber tube. The utility model discloses mainly used adjusts the angle of broadcast television antenna.

Description

Angle adjusting rack for broadcast television antenna

The technical field is as follows:

the utility model belongs to the technical field of broadcasting and TV engineering, specifically speaking especially relates to a radio and television antenna angle modulation frame.

Background art:

in the field intensity test process of the broadcast television signal, the antenna needs to be adjusted in multiple directions continuously so as to find the optimal signal intensity, the prior technical scheme generally adopts a bracket for fixing, and when the bracket is short, the antenna signal is not good although the adjustment is convenient, and the occupied space of the antenna on the ground is large; if the support is higher, the problem that the high position is not easy to adjust occurs, and some antenna mounting frames which can be adjusted at the high position exist in the prior art, but the antenna mounting frames can only be adjusted in the rotation direction on the horizontal plane, and cannot be adjusted in the vertical direction to raise the head or lower the head, so that the optimal signal cannot be accurately adjusted.

The invention content is as follows:

the to-be-solved technical problem of the utility model is to overcome prior art not enough, provide a broadcast television antenna angle alignment frame, it can be through the universal wheel coarse tuning and can finely tune through the bevel gear transmission again.

In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:

a broadcast television antenna angle adjusting bracket comprises a weight plate, universal wheels are arranged below the weight plate, a shell is arranged above the weight plate, a supporting platform capable of rotating along the shell is arranged at the upper end of the shell, a first air cylinder, a lead screw, a first bevel gear and a second bevel gear are arranged in the shell, the lower end of the lead screw is rotatably arranged on the weight plate through a bearing, external threads are arranged at the upper end of the lead screw, an internal thread matched with the external threads of the lead screw is arranged on a first air cylinder rod of the first air cylinder, the second bevel gear is fixedly arranged on the lead screw, the first bevel gear is in meshing transmission connection with the second bevel gear, a second rotating shaft is arranged in the first bevel gear, and a second hand wheel is; and a second cylinder is arranged in the supporting platform, a rodless cavity of the first cylinder is communicated with a rodless cavity of the second cylinder through a rubber tube, and a second cylinder rod of the second cylinder is connected with the antenna through a rotating mechanism.

Preferably, the rotating mechanism comprises a rack, a gear A, two fixing plates and an antenna fixing plate, the two fixing plates are parallelly installed on the supporting platform, a rotatable first rotating shaft is arranged between the two fixing plates, the gear A and the antenna fixing plate are installed on the first rotating shaft, the rack is in meshing transmission connection with the gear A, and the lower end of the rack is fixedly connected with the second cylinder rod.

Preferably, a fluted disc is arranged on the lower end face of the supporting table, a third rotating shaft is arranged at the lower end of the shell, a chain wheel B is arranged on the third rotating shaft, a fourth rotating shaft is arranged at the upper end of the shell, a chain wheel A and a gear B are arranged on the fourth rotating shaft, the chain wheel A is in meshed transmission connection with the chain wheel B through a chain, and the gear B is in meshed transmission connection with the fluted disc.

Preferably, one end of the third rotating shaft is provided with a first hand wheel.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model can be finely adjusted through the coarse adjustment of the universal wheel and the bevel gear transmission, the universal wheel is fixed after the coarse adjustment, and then the angle of the antenna bracket at the high position can be controlled at the low position through rotating the first hand wheel and the second hand wheel for fine adjustment, so that the best signal can be accurately adjusted;

2. the antenna can be prevented from shifting due to heavy upper side and light lower side by arranging the weight plate at the lower part;

3. through first bevel gear, second bevel gear and lead screw, turn into the power that reciprocates with the lower extreme in the direction of rotation, rethread first cylinder, second cylinder, rack and gear A will reciprocate the power conversion and become "new line" or "low line" at vertical direction, and then can easily adjust the antenna angle, can be accurate through the fine setting find the best signal to can fix a position it through the lead screw, prevent to take place the skew.

Description of the drawings:

fig. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view a-a of fig. 1.

In the figure: 1. a universal wheel; 2. a weight plate; 3. a housing; 4. a fluted disc; 5. a support table; 6. a fixing plate; 7. an antenna; 8. a rack; 9. a first rotating shaft; 10. a gear A; 11. a gear B; 12. a chain wheel A; 13. a chain; 14. a first hand wheel; 15. a sprocket B; 16. a second hand wheel; 17. a second rotating shaft; 18. a first bevel gear; 19. a second bevel gear; 20. a lead screw; 21. a first cylinder rod; 22. a first cylinder; 23. a hose; 24. a second cylinder; 25. a second cylinder rod; 26. an antenna fixing plate; 27. a third rotating shaft; 28. and a fourth rotating shaft.

The specific implementation mode is as follows:

the present invention will be further described with reference to the following specific embodiments and accompanying drawings.

Example 1:

as shown in fig. 1-2, an angle adjusting bracket for a broadcast television antenna comprises a weight plate 2, a universal wheel 1 is arranged below the weight plate 2, a housing 3 is arranged above the weight plate 2, a supporting platform 5 which can rotate along the housing 3 is arranged at the upper end of the housing 3, a first air cylinder 22, a lead screw 20, a first bevel gear 18 and a second bevel gear 19 are arranged in the housing 3, the lower end of the lead screw 20 is rotatably mounted on the weight plate 2 through a bearing, an external thread is arranged at the upper end of the lead screw, an internal thread which is matched and mounted with the external thread of the lead screw 20 is arranged on a first air cylinder rod 21 of the first air cylinder 22, so that the upper end of the lead screw 20 is matched and used with the first air cylinder rod 21 through a thread, the force of the lead screw 20 in the rotation direction is converted into the up-and-down movement of the first air cylinder rod 21, the second, a second rotating shaft 17 is arranged in the first bevel gear 18, and a second hand wheel 16 is arranged at one end of the second rotating shaft 17, which extends out of the shell 3; the support table 5 is internally provided with a second cylinder 24, a rodless cavity of the first cylinder 22 is communicated with a rodless cavity of the second cylinder 24 through a rubber tube 23, a fixed amount of liquid is arranged in the rubber tube 23, and a second cylinder rod 25 of the second cylinder 24 is connected with the antenna 7 through a rotating mechanism.

The rotating mechanism comprises a rack 8, a gear A10, two fixing plates 6 and an antenna fixing plate 26, the two fixing plates 6 are parallelly installed on the supporting platform 5, a rotatable first rotating shaft 9 is arranged between the two fixing plates 6, the gear A10 and the antenna fixing plate 26 are both installed on the first rotating shaft 9, the rack 8 is in meshed transmission connection with the gear A10, the lower end of the rack 8 is fixedly connected with the second cylinder rod 25, and the outer end of the antenna fixing plate 26 is connected with an antenna 7.

The lower terminal surface of brace table 5 is equipped with fluted disc 4, and the lower extreme of casing 3 is equipped with third pivot 27, is equipped with sprocket B15 on the third pivot 27, and the upper end of casing 3 is equipped with fourth pivot 28, is equipped with sprocket A12 and gear B11 on the fourth pivot 28, and sprocket A12 is connected through the meshing transmission of chain 13 with sprocket B15, and gear B11 is connected with fluted disc 4 meshing transmission.

One end of the third rotating shaft 27 is provided with a first hand wheel 14.

The utility model discloses a theory of operation does:

firstly, the universal wheel 1 is moved to fix the utility model at a proper position, and the direction is roughly adjusted; secondly, the first handwheel 14 is rotated, the first handwheel 14 sequentially drives the third rotating shaft 27, the chain wheel B15, the chain 13, the chain wheel A12, the fourth rotating shaft 28, the gear B11 and the fluted disc 4 to rotate, and further drives the supporting table 5 to rotate, so that the antenna 7 is adjusted in the horizontal direction, and when a strong signal is adjusted, the antenna is fixed; finally, the second hand wheel 16 is rotated, the second hand wheel 16 sequentially drives the second rotating shaft 17, the first bevel gear 18, the second bevel gear 19 and the screw rod 20 to rotate, the screw rod 20 converts the power in the rotating direction into the upward and downward movement of the first cylinder rod 21, and the liquid in the rubber tube 23 is constant, so that the upward movement of the first cylinder rod 21 pushes the second cylinder rod 25 of the second cylinder 24 to move upward, the second cylinder rod 25 drives the rack 8 to move upward and downward, the gear A10 and the first rotating shaft 9 are further driven to rotate, and the antenna 7 is further driven to be raised or lowered in the vertical direction.

Claims

1. The utility model provides a broadcast television antenna angle alignment frame, includes counterweight plate (2), counterweight plate (2) below is equipped with universal wheel (1), and counterweight plate (2) top is equipped with casing (3), casing (3) upper end is equipped with can be along casing (3) pivoted brace table (5), its characterized in that: a first air cylinder (22), a lead screw (20), a first bevel gear (18) and a second bevel gear (19) are arranged in the shell (3), the lower end of the lead screw (20) is rotatably arranged on the counterweight plate (2) through a bearing, the upper end of the lead screw is provided with an external thread, an internal thread matched with the external thread of the lead screw (20) is arranged on a first air cylinder rod (21) of the first air cylinder (22), the second bevel gear (19) is fixedly arranged on the lead screw (20), the first bevel gear (18) is in meshing transmission connection with the second bevel gear (19), a second rotating shaft (17) is arranged in the first bevel gear (18), and a second hand wheel (16) is arranged at one end, extending out of the shell (3), of the second rotating shaft (17; a second cylinder (24) is arranged in the supporting table (5), a rodless cavity of the first cylinder (22) is communicated with a rodless cavity of the second cylinder (24) through a rubber tube (23), and a second cylinder rod (25) of the second cylinder (24) is connected with the antenna (7) through a rotating mechanism.

2. The broadcast television antenna angle adjustment stand of claim 1, wherein: the rotating mechanism comprises a rack (8), a gear A (10), two fixing plates (6) and an antenna fixing plate (26), the two fixing plates (6) are parallelly installed on the supporting platform (5), a rotatable first rotating shaft (9) is arranged between the two fixing plates (6), the gear A (10) and the antenna fixing plate (26) are installed on the first rotating shaft (9), the rack (8) is in meshed transmission connection with the gear A (10), and the lower end of the rack (8) is fixedly connected with a second air cylinder rod (25).

3. The broadcast television antenna angle adjustment stand of claim 2, wherein: the lower terminal surface of brace table (5) is equipped with fluted disc (4), and the lower extreme of casing (3) is equipped with third pivot (27), is equipped with sprocket B (15) on third pivot (27), and the upper end of casing (3) is equipped with fourth pivot (28), is equipped with sprocket A (12) and gear B (11) on fourth pivot (28), and sprocket A (12) are connected through chain (13) meshing transmission with sprocket B (15), and gear B (11) are connected with fluted disc (4) meshing transmission.

4. The broadcast television antenna angle adjustment stand of claim 3, wherein: one end of the third rotating shaft (27) is provided with a first hand wheel (14).