CN-224217690-U - Short wave broadcast deflection switch with self-damping function

CN224217690UCN 224217690 UCN224217690 UCN 224217690UCN-224217690-U

Abstract

The utility model provides a shortwave broadcasting deflection switch with self-damping, which comprises a reduction box, a self-damping device and a self-damping device, wherein a gear transmission mechanism is arranged in the reduction box and used for reducing the input rotary power and transmitting the rotary power to an output end, and the self-damping device is arranged in the reduction box and connected with the gear transmission mechanism of the reduction box, and can generate damping action when the gear transmission mechanism of the reduction box rotates so as to reduce the rotating speed of the reduction box. By additionally arranging the self-damping device, the utility model effectively solves the problem that the high-power shortwave broadcasting deflection switch is unreliable in the deceleration positioning process. The generator in the self-damping device works with the power resistor in a matched mode, not only can damping effect be generated when the reduction gearbox rotates and the rotating speed be slowed down, but also mechanical energy can be converted into electric energy, and the electric energy is consumed through the power resistor, so that effective utilization of energy is realized.

Inventors

JIA LEI
Ma Anjing
Qiao chang
YIN JIASHAN
QU FANG
WANG SHITING
LI ZHUO
YU BO
CAI DONGSHAN
XU SONGLI
XU LIGUANG
Liu Yugun

Assignees

国家广播电视总局北京地球站

Dates

Publication Date: 20260508
Application Date: 20250604

Claims (7)

1. A shortwave broadcasting deflection switch with self-damping, characterized in that the shortwave broadcasting deflection switch with self-damping comprises: the speed reduction box (22) comprises a transmission shaft (221), and the transmission shaft (221) is connected with a self-damping device (3); The self-damping device (3) is arranged inside the reduction gearbox (22), the self-damping device (3) comprises a generator (301) and a power resistor (302), an output shaft of the generator (301) is connected with one end of the transmission shaft (221), and the generator (301) is electrically connected with the power resistor (302).
2. The shortwave broadcasting deflection switch with self-damping according to claim 1, further comprising a deflection device (1) and a transmission device (2), wherein the transmission device (2) comprises a reduction gearbox (22) and a driving motor (21) connected with the input end of the reduction gearbox (22), the deflection device (1) is used for adjusting the emitting direction of broadcasting signals, an output shaft (211) of the driving motor is connected with a transmission shaft (221) of the reduction gearbox (22) through a turning transmission gear, the input shaft of the generator (301) is meshed with the lower end of the transmission shaft (221) through a gear, and the output end of the transmission shaft (221) is connected with the deflection device (1).
3. The shortwave broadcasting deflection switch with self-damping according to claim 2, wherein the deflection device comprises a deflection switch frame (101) and a deflection switch main shaft (102), the switch frame (101) is a polygonal frame and comprises an upper frame (1011) and a lower frame (1012), the upper end and the lower end of the deflection switch main shaft (102) are respectively fixedly connected to the upper frame (1011) and the lower frame (1012), the lower end of the deflection switch main shaft (102) is fixedly connected with the output end of the transmission device (2), and the shortwave broadcasting deflection switch further comprises a plurality of deflection switch insulating porcelain rods (103), each switch insulating porcelain rod (103) is arranged in parallel with the deflection switch main shaft (102), and the upper end and the lower end of each deflection switch insulating porcelain rod (103) are fixedly connected with the upper frame (1011) and the lower frame (1012).
4. A shortwave broadcasting deflection switch with self-damping according to claim 3, wherein the deflection switch main shaft (102) and the deflection switch insulating porcelain rod (103) are connected through a first connecting arm (104) and a second connecting arm (105), and a first deflection ring (106) and a second deflection ring (107) are respectively arranged on the first connecting arm (104) and the second connecting arm (105).
5. The short-wave broadcast deflection switch with self-damping according to claim 4, wherein the first (104) and the second (105) connecting arms are each provided with a high-frequency transmission path.
6. The shortwave broadcasting deflection switch with self-damping according to claim 5, wherein the deflection switch frame (101), the deflection switch main shaft (102), the deflection switch insulating porcelain rod (103), the first connecting arm (104) and the second connecting arm (105) are all made of high-strength and corrosion-resistant materials.
7. The shortwave broadcasting deflection switch with self-damping of claim 1, wherein the reduction box is a worm gear reduction box.

Description

Short wave broadcast deflection switch with self-damping function Technical Field The utility model belongs to the technical field of short-wave communication equipment, and particularly relates to a short-wave broadcast deflection switch with self-damping. Background The high-power shortwave broadcasting deflection switch is generally applied to an outdoor high-frequency high-voltage environment and is used for switching shortwave broadcasting signals, so that stability and accuracy of signal transmission are ensured. When the broadcast signal is switched using the deflection switch, it is necessary to ensure that the deflection switch is stopped within a small rotation angle to ensure the accuracy of the switching signal. The temperature and humidity of the working environment of the high-power shortwave broadcasting deflection switch are greatly changed, and in the environment, the high-power shortwave broadcasting deflection switch is easy to generate faults which cannot be accurately positioned due to temperature change, humidity change, interference and the like. The existing method for decelerating and positioning the high-power shortwave broadcasting deflection switch at home and abroad uses an electromagnetic brake to lock a main shaft or uses a brake block to perform friction deceleration on a dial wheel of a reduction gearbox. The former has the disadvantages that when the system is interfered or the control signal reaches a certain delay, the electromagnetic brake can not lock the main shaft of the switch in time, the main shaft can continuously rotate under the action of inertia, so that the switch can not be reliably positioned, and the latter has the disadvantages that when the temperature is changed and the long-term abrasion or the control signal is delayed, the friction of the braking system is easily reduced or the braking is not timely enough, the reduction gearbox can not be timely braked, and the reduction gearbox can continuously rotate under the action of inertia, so that the switch can not be reliably positioned. Disclosure of utility model Aiming at the technical problems, the utility model provides a short wave broadcast deflection switch with self-damping, which is provided with a self-damping device, and the rotation speed of a reduction gearbox is effectively slowed down by means of the damping action of the self-damping device, and finally the switch is reliably positioned. The specific technical scheme of the application is that the shortwave broadcasting deflection switch with self-damping comprises: The speed reducing box comprises a transmission shaft, and the transmission shaft is connected with a self-damping device; The self-damping device is arranged inside the reduction gearbox and comprises a generator and a power resistor, an output shaft of the generator is connected with one end of the transmission shaft through a gear, and the generator is electrically connected with the power resistor. The short wave broadcasting deflection switch with the self-damping function comprises a speed reduction box, a transmission device, a deflection device and a driving motor, wherein the speed reduction box is connected with the input end of the speed reduction box, the deflection device is used for adjusting the emitting direction of a broadcasting signal, an output shaft of the driving motor is connected with a transmission shaft of the speed reduction box through a turning transmission gear, an input shaft of a generator is meshed with the lower end of the transmission shaft through a gear, and an output end of the transmission shaft is connected with the deflection device. Further, the deflection device comprises a deflection switch frame and a deflection switch main shaft, wherein the switch frame is a polygonal frame and comprises an upper frame and a lower frame, the upper end and the lower end of the deflection switch main shaft are respectively and fixedly connected to the upper frame and the lower frame, the lower end of the deflection switch main shaft is fixedly connected with the output end of the transmission device, the deflection device further comprises a plurality of deflection switch insulating porcelain rods, each switch insulating porcelain rod is arranged in parallel with the deflection switch main shaft, and the upper end and the lower end of each deflection switch insulating porcelain rod are fixedly connected with the upper frame and the lower frame. Further, the deflection switch main shaft is connected with the deflection switch insulating porcelain rod through a first connecting arm and a second connecting arm, and a first deflection ring and a second deflection ring are respectively arranged on the first connecting arm and the second connecting arm. Further, high-frequency transmission channels are laid on the first connecting arm and the second connecting arm. Furthermore, the deflection switch frame, the deflection switch main shaft, the deflection sw