Medium-wave antenna deployment network maintenance switching device

Abstract

The utility model relates to a medium-wave antenna deploying network maintenance switching device, and relates to the technical field of medium-wave transmitting system maintenance switching, the medium-wave antenna deploying network maintenance switching device comprises a switching machine and a switching assembly, a wireless network transmitting end is installed above the switching machine through a bolt, an antenna simulation unit is arranged on the side edge of the wireless network transmitting end, and the antenna simulation unit is connected with the switching assembly. Switching assemblies are mounted on the two sides of the inner wall of the switching machine through bolts; according to the invention, a one-key switching function can be realized, test maintenance can be realized, maintenance and testing can be carried out only after a feeder line is dismounted and disconnected through a special tool in the prior art, and one-key recovery can be realized. And the broadcast can be quickly recovered, and the maintenance time is short.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of maintenance switching of medium wave transmitting systems, in particular to a medium wave antenna matching network maintenance switching device. BACKGROUND

[0002] The medium wave amplitude modulation broadcast transmitting system can only meet the broadcast demand of one frequency in a relatively fixed time, both at home and abroad, and cannot realize rapid frequency switching broadcast like the short wave transmitting system. The main reason is that when the broadcast frequency is to be changed, there are many adjustment points involved in the tuning matching, which cannot be directly operated by non-professionals. Even if professional personnel participate in the frequency conversion operation, it is also relatively complex. Not only the related parts of the transmitter need to be adjusted, but also the matching network of the transmitting antenna related to the transmitter needs to be adjusted accordingly. The existing antenna matching network can only meet the matching of one frequency. When the medium wave transmitting system changes the broadcast frequency, the corresponding devices and matching forms of the antenna matching network may also need to be changed and adjusted accordingly. Therefore, the workload will be very large when the frequency is changed, and the time required to complete will be very long. This will inevitably cause the relative long-time stop of the transmitting system, affecting the normal broadcast of the transmitting station.

[0003] In the prior art, the related technology of maintenance switching of medium wave amplitude modulation broadcast transmitting can refer to the frequency switching method of a medium wave antenna matching network disclosed in Chinese Patent No. CN106329132B. Different antenna matching networks are needed for different frequencies. The capacitance and inductance parameters of the antenna matching network are adjusted through the switching form of the switch, so as to achieve the purpose of rapid switching of the antenna matching network. It specifically includes the following steps: the antenna matching network of the medium wave transmitter is composed of capacitors, inductors and radio frequency switching switches. By controlling the on-off of the radio frequency switching switch, the capacitors and inductors needed to meet different frequencies in the antenna matching network are selected, so as to realize the rapid matching of the antenna matching network to different frequencies.

[0004] In the process of implementing the present application, it is found that the prior art has the following problems:

[0005] Due to the small space of the matching room, combined with indoor leak detection, the matching room is cold in winter and hot in summer, and maintenance is often carried out at night, which is easy to cause the antenna grounding rod to be forgotten to be connected, causing electric shock of personnel or damage to the maintenance equipment. At the same time, in the daily maintenance of the network, the feeder and the network inlet need to be disconnected, and only after being disconnected can the network be maintained and tested. Each time the network needs to be disconnected manually, and direct contact with the matching network cannot be avoided. Practical new type content

[0006] The purpose of the present application is to provide a medium wave antenna matching network maintenance switching device.

[0007] The application provides a medium wave antenna matching network maintenance switching device adopting the following technical scheme:

[0008] The medium wave antenna matching network maintenance switching device comprises a switching machine and a switching assembly, a wireless network transmitting end is arranged above the switching machine and is fixed through bolts, an antenna simulation unit is arranged on the side of the wireless network transmitting end, and the switching assembly is arranged on the inner wall of the switching machine through bolts.

[0009] By adopting the above technical scheme, the switching machine is composed of a DC 24V power supply, two K1 / K2 vacuum relays, a maintenance switch, an antenna simulation unit and a maintenance indicator light. The two K1 / K2 vacuum relays are two vacuum relay switches, each vacuum relay switch has two auxiliary nodes and one wire package.

[0010] The switching assembly 21 comprises a first K1 normally closed contact, a second K1 normally closed contact and a K2 normally closed contact, the side of the first K1 normally closed contact is provided with the second K1 normally closed contact, the side of the first K1 normally closed contact is provided with the second K1 normally closed contact, and the side, away from the first K1 normally closed contact, of the second K1 normally closed contact is provided with the K2 normally closed contact.

[0011] By adopting the above technical scheme, the first K1 normally closed contact, the second K1 normally closed contact and the K2 normally closed contact are then connected in series in the medium wave network, the first K1 normally closed contact is connected to contact points 1, 3 and 5, the second K1 normally closed contact is connected to contact points 1, 3 and 5, and the K2 normally closed contact is connected to contact points 2, 4 and 6, then the feed line is disconnected from the input end of the matching network, the disconnected feed line end is connected to terminal 1 of the K2 normally closed contact, the terminal of the K2 normally closed contact is connected to the input end of the matching network unit, the terminal of the K2 normally closed contact is grounded, the A2 wire package of the K2 normally closed contact is connected according to the figure, one end is connected to the maintenance indicator light, and the other end is connected to the A1 wire package of the first K1 normally closed contact, the K1 normally closed contact has two groups of normally closed contacts, which are the first K1 normally closed contact and the second K1 normally closed contact, the first K1 normally closed contact is connected in series between the matching network unit and the wireless network transmitting end, and the other group of second K1 normally closed contacts is connected between the matching network and the antenna simulation unit.

[0012] The switching assembly further comprises a maintenance switch and a maintenance indicator light, the side, away from the K normally closed contact, of the maintenance switch is provided with the maintenance indicator light, and the maintenance switch and the maintenance indicator light are electrically connected through wires.

[0013] By adopting the technical scheme, the disconnected output end of the distribution network is connected with the terminal of K1, the terminal of K1 is connected with the input end of the antenna simulation unit, the terminal of K1 is grounded, the terminal of K1 is connected with the antenna simulation unit, the A1 wire package of K1 is connected according to the drawing, one end is connected with the A2 wire package of K2, and the other end is grounded.

[0014] The lower side of the switching assembly is provided with a support plate which is installed by bolts, and a first test port is installed at the edge of the support plate, and a second test port is arranged at the side of the first test port.

[0015] By adopting the technical scheme, when the system is in a normal broadcasting state, the radio frequency signal of the transmitter is transmitted to the K2 normally closed node 1-3 through the feeder, the radio frequency signal is connected to the distribution network for output through the K2 normally closed node, and the radio frequency signal output by the distribution network is connected to the wireless network transmitting end through the K1 normally closed node 3-1 for normal transmission; when the system needs to be repaired after a fault, the transmitter is in a shutdown state, at this time, only the maintenance switch with a self-locking device needs to be pressed, the DC 24V voltage passes through the A1 / A2 wire package, so that the A1 / A2 wire package is attracted, the auxiliary contact is opened, and the maintenance indicator is lighted, prompting the maintenance state. At this time, the K2 terminal 1-5 is closed, the output end of the feeder is short-circuited to the ground, and the K2 terminal is prevented from having high voltage due to the misoperation of the transmitter. When the maintenance switch is opened, the maintenance indicator is lighted red, reminding the maintenance personnel of the maintenance state, and the A1 wire package is attracted, the K1 auxiliary contact is opened, the K1 terminals 2-6 and 1-5 are closed at this time, the output end of the distribution network unit is connected with the antenna simulation unit, the radio frequency signal received by the wireless network transmitting end is connected to the ground through the terminal 1-5, the radio frequency signal received by the wireless network transmitting end in the test is prevented from being mixed into the distribution network unit, the antenna simulation unit is set by imitating the impedance of the wireless network transmitting end, the impedance value of the wireless network transmitting end is different according to different heights and frequencies, and when the wireless network transmitting end is erected, the wireless network transmitting end has a relatively fixed impedance value for the fixed frequency of the transmitter.

[0016] The upper side of the switching assembly is provided with an A1 wire package, the side of the A1 wire package is provided with an A2 wire package, and the upper sides of the A1 wire package and the A2 wire package are provided with a distribution network unit.

[0017] By adopting the technical scheme, the antenna simulation unit is prefabricated according to the actually measured wireless network transmitting end data, the maintenance switch is selected to be a switch with a self-locking device, and it is ensured that the switch is maintained in a closed state after being pressed.

[0018] The side, away from the switching assembly, of the support plate is provided with a feeder, the side, away from the support plate, of the feeder is provided with a transmitter, and the side of the transmitter is provided with a DCV voltage input end.

[0019] By adopting the technical scheme, the testing instrument measuring end is connected with the testing port of the device, the testing of the network is started, when the measurement and maintenance are completed, the instrument is disconnected, the maintenance switch is pressed again, the maintenance switch is popped, the maintenance indicator light is extinguished, the wire package A1 / A2 is powered off, and the K1 / K2 end points are reset, and the network unit automatically recovers the connection with the wireless network transmitting end and the transmitter.

[0020] The switching machine comprises a man-machine interface, a monitoring table, an observation port, a handle and a heat dissipation groove, the man-machine interface is provided with the monitoring table above, the observation port below, the handle below the observation port, and the heat dissipation groove on the side of the switching machine.

[0021] By adopting the technical scheme, the man-machine interface and the monitoring table are used to observe the condition of the switching machine, the states of the first K1 normally closed contact, the second K1 normally closed contact, the K2 normally closed contact and the maintenance switch are observed through the observation port, the switching machine is opened through the handle, and the operation of the switching machine is cooled through the heat dissipation groove.

[0022] In summary, the present application has at least one of the following beneficial technical effects:

[0023] 1. The maintenance switching device can realize one-key switching function, realizes test maintenance, and can realize one-key recovery and realize fast recovery broadcasting, and reduces maintenance time.

[0024] 2. The maintenance switching device has an antenna grounding function, prevents external interference high-frequency signals received by the antenna from entering the network, reduces test interference, effectively avoids high-frequency voltage damage to maintenance personnel, and selects a large-power vacuum switch for the total switch, which can withstand the radio frequency high voltage and large current signal during normal broadcasting of the transmitting equipment.

[0025] 3. The antenna simulation unit in the maintenance switching device can realize the test of the network in the disconnected state of the antenna. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a whole structure schematic diagram of the embodiment of the present application;

[0027] Figure 2 is a maintenance switch structure schematic diagram of the embodiment of the present application;

[0028] Figure 3 is a network unit structure schematic diagram of the embodiment of the present application;

[0029] Figure 4 is a Figure 2Structure schematic diagram at middle A;

[0030] Figure 5 Circuit structure schematic diagram of the switching machine of the embodiment of the present application;

[0031] Reference signs: 1, switching machine; 2, wireless network transmitting end; 3, antenna simulation unit; 4, man-machine interface; 5, monitoring table; 6, observation port; 7, handle; 8, transmitter; 9, feeder; 10, heat dissipation groove; 11, first K1 normally closed contact; 12, second K1 normally closed contact; 13, K2 normally closed contact; 14, maintenance switch; 15, first test port; 16, second test port; 17, maintenance indicator light; 18, A1 wire package; 19, A2 wire package; 20, distribution network unit; 21, switching assembly; 22, support plate; 23, DC 24V voltage access end. DETAILED DESCRIPTION

[0032] The following will be described in detail in combination with the accompanying Figure 1 - the accompanying Figure 5 The present application will be further described in detail.

[0033] Embodiment: a medium wave antenna distribution network maintenance switching device, comprising a switching machine 1 and a switching assembly 21, the wireless network transmitting end 2 is installed on the top of the switching machine 1 through bolts, and the side of the wireless network transmitting end 2 is provided with an antenna simulation unit 3, and the inner wall of the switching machine 1 is provided with the switching assembly 21 on both sides through bolts, the switching machine 1 is composed of a DC 24V voltage access end 23, two K1 / K2 vacuum relays, a maintenance switch 14, an antenna simulation unit 3 and a maintenance indicator light 17, K1 / K2 are two vacuum relay switches, each vacuum relay switch has two auxiliary nodes and a wire package.

[0034] Switching assembly 21 contains a first K1 normally closed contact 11, a second K1 normally closed contact 12 and a K2 normally closed contact 13, and the side of the first K1 normally closed contact 11 is provided with the second K1 normally closed contact 12, and the side of the first K1 normally closed contact 11 is provided with the second K1 normally closed contact 12, and the side of the second K1 normally closed contact 12 away from the first K1 normally closed contact 11 is provided with the K1 normally closed contact, and then the first K1 normally closed contact 11, the second K1 normally closed contact 12 and the K2 normally closed contact 13 are connected in series in the medium wave network, wherein the first K1 normally closed contact 11 is connected to contact points 1, 3 and 5, wherein the second K1 normally closed contact 12 is connected to contact points 1, 3 and 5, wherein the K2 normally closed contact 13 is connected to contact points 2, 4 and 6, then disconnect the input end of the distribution network unit 20 from the feeder 9, connect the disconnected end of the feeder 9 to the terminal of the K2 normally closed contact 13, connect the terminal of the K2 normally closed contact 13 to the input end of the distribution network unit 20, ground the terminal 5 of the K2 normally closed contact 13, connect the A2 wire package 19 of the K2 normally closed contact 13 according to the figure, one end connects the maintenance indicator light 17, the other end connects the A1 wire package 18 of the first K1 normally closed contact 11, the K1 normally closed contact has two groups of normally closed contacts, which are the first K1 normally closed contact 11 and the second K1 normally closed contact 12, the first K1 normally closed contact 11 is connected in series between the distribution network unit 20 and the wireless network transmitting end 2, and the other group of the second K1 normally closed contact 12 is connected between the distribution network unit 20 and the antenna simulation unit 3.

[0035] The switching assembly 21 further comprises a maintenance switch 14 and a maintenance indicator light 17, and the maintenance switch 14 is provided with the maintenance indicator light 17 away from the K2 normally closed contact 13, and the maintenance switch 14 and the maintenance indicator light 17 are electrically connected by wires, the disconnected output end of the distribution network 16 is connected to the terminals 3 and 6 of K1, the terminal 1 of K1 is connected to the input end of the antenna, the terminal 5 of K1 is grounded, the terminal 2 of K1 is connected to the antenna simulation unit 3, the A1 wire package 18 of K1 is connected according to the figure, one end is connected to the A2 wire package 19 of K2, the other end is grounded, and the model of the antenna simulation unit 3 is WR90.

[0036] The lower side of the switching assembly 21 is provided with a support plate 22 which is installed by bolts, and the edge of the support plate 22 is provided with a first test port 15, and the side of the first test port 15 is provided with a second test port 16. When the system is in a normal broadcasting state, the radio frequency signal of the transmitter 8 is transmitted to the K2 normally closed node 1-3 through the feeder 9, the radio frequency signal is connected to the distribution network unit 20 for output through the K2 normally closed node 13, and the radio frequency signal output by the distribution network unit 20 is connected to the wireless network transmitting end 2 through the K1 normally closed node 3-1 for normal transmission. When the system needs to be repaired after a fault, the transmitter 8 is in a shutdown state, at this time, only the maintenance switch 14 with self-locking needs to be pressed, the DC 24V voltage passes through the A1 wire package 18 and the A2 wire package 19, the A1 wire package 18 and the A2 wire package 19 are attracted, the auxiliary contact is opened, and the maintenance indicator 17 is lit to prompt the entry into the maintenance state. At this time, the K2 terminal 1-5 is closed to ensure that the output end of the feeder 9 is short-circuited to the ground to prevent high voltage at the K2 terminal 3 due to the misoperation of the transmitter 8. When the maintenance switch 14 is opened, the maintenance indicator 17 is lit red to remind the maintenance personnel that it is in the maintenance state, at the same time, the A1 wire package 18 is attracted, the K1 auxiliary contact is opened, at this time, the K1 terminal 2-6 and 1-5 are closed, the output end of the distribution network unit 20 is connected to the antenna simulation unit 3, and the radio frequency signal received by the wireless network transmitting end 2 is connected to the ground through the terminal 1-5 to avoid the radio frequency signal received by the wireless network transmitting end 2 from entering the distribution network unit 20 during testing. The antenna simulation unit 16 is set to simulate the impedance of the wireless network transmitting end 2. The impedance value of the wireless network transmitting end 2 is different according to different heights and frequencies. When the wireless network transmitting end 2 is erected, the wireless network transmitting end 2 has a relatively fixed impedance value for the fixed frequency of the transmitter 8.

[0037] The upper side of the switching assembly 21 is provided with the A1 wire package 18, and the side of the A1 wire package 18 is provided with the A2 wire package 19, and the upper side of the A1 wire package 18 and the A2 wire package 19 is provided with the distribution network unit 20. The antenna simulation unit 3 is prefabricated according to the measured data of the wireless network transmitting end 2. The maintenance switch 14 selects a switch with a self-locking device to ensure that it is always closed after being pressed. The model of the distribution network unit 20 is H3C-WTU630H.

[0038] The side of the support plate 22 away from the switching assembly 21 is provided with the feeder 9, and the side of the feeder 9 away from the support plate 22 is provided with the transmitter 8, and the side of the transmitter 8 is provided with the DC 24V voltage access end 23. At this time, the measurement end of the test instrument is connected to the test port of the device to start the test of the distribution network. After the measurement is completed, the instrument is disconnected, and the maintenance switch 14 can be pressed again. The maintenance switch 14 is popped out, at this time, the maintenance indicator 17 is extinguished, the wire package A1 / A2 is powered off, the K1 / K2 points are reset, and the distribution network unit 20 automatically restores the connection with the wireless network transmitting end 2 and the transmitter 8.

[0039] The switcher 1 comprises a human-computer interaction interface 4, a monitoring table 5, an observation port 6, a handle 7 and a heat sink 10, and the human-computer interaction interface 4 is provided with the monitoring table 5 above, and the human-computer interaction interface 4 is provided with the observation port 6 below, and the observation port 6 is provided with the handle 7 below, and the side of the switcher 1 is provided with the heat sink 10, wherein the human-computer interaction interface 4 and the monitoring table 5 are used to observe the situation of the switcher 1, the states of the first K1 normally closed contact 11, the second K1 normally closed contact 12, the K2 normally closed contact 13 and the maintenance switch 14 are observed through the observation port, and the switcher 1 is opened through the handle 7, and the operation of the switcher 1 is cooled through the heat sink 10.

[0040] The implementation principle of the embodiment of the application is as follows: the switcher 1 is composed of a DC 24V voltage access end 23, two vacuum relays K1 / K2, a maintenance switch 14, an antenna simulation unit 3, and a maintenance indicator lamp 17. K1 / K2 are two vacuum relay switches, each of which has two auxiliary nodes and a wire package. Then, the first K1 normally closed contact 11, the second K1 normally closed contact 12, and the K2 normally closed contact 13 are connected in series in the medium wave network. The first K1 normally closed contact 11 is connected to contact points 1, 3, and 5. The second K1 normally closed contact 12 is connected to contact points 1, 3, and 5. The K2 normally closed contact 13 is connected to contact points 2, 4, and 6. Then, the feeder 9 is disconnected from the input end of the distribution network, the disconnected end of the feeder 9 is connected to terminal 1 of the K2 normally closed contact 13, terminal of the K2 normally closed contact 13 is connected to the input end of the distribution network unit 20, terminal 5 of the K2 normally closed contact 13 is grounded, the A2 wire package 19 of the K2 normally closed contact 13 is connected as shown in the figure, one end is connected to the maintenance indicator lamp 17, and the other end is connected to the A1 wire package 18 of the first K1 normally closed contact 11. The K1 normally closed contact has two groups of normally closed contacts, which are the first K1 normally closed contact 11 and the second K1 normally closed contact 12. The first K1 normally closed contact 11 is connected in series between the distribution network unit 20 and the wireless network transmitting end 2. The other group of the second K1 normally closed contact 12 is connected between the distribution network unit 20 and the antenna simulation unit 3. The disconnected output end of the distribution network 16 is connected to terminals 3 and 6 of K1. Terminal 1 of K1 is connected to the input end of the antenna. Terminal 5 of K1 is grounded. Terminal 2 of K1 is connected to the antenna simulation unit 3. The A1 wire package 18 of K1 is connected as shown in the figure, one end is connected to the A2 wire package 19 of K2, and the other end is grounded. When the system is in a normal broadcasting state, the radio frequency signal of the transmitter 8 is transmitted to the K2 normally closed node 1-3 through the feeder 9. The radio frequency signal is connected to the distribution network unit 20 through the K2 normally closed contact 13 for output. The radio frequency signal output by the distribution network unit 20 is connected to the wireless network transmitting end 2 through the K1 normally closed node 3-1 for normal transmission. When the system fails and needs to be maintained, the transmitter 8 is in a shutdown state. At this time, only the maintenance switch 14 with self-locking needs to be pressed. After the DC 24V voltage passes through the A1 wire package 18 and the A2 wire package 19, the A1 wire package 18 and the A2 wire package 19 are attracted, the auxiliary contact is opened, the maintenance indicator lamp 17 is lit, and it is prompted to enter the maintenance state.At this time, the K2 terminal 1-5 is closed, ensuring that the feeder 9 output end is short-circuited to the ground, preventing high voltage at the K2 terminal 3 due to the transmitter 8 misoperation, when the maintenance switch 14 is opened, the maintenance indicator 17 is lit red, reminding the maintenance personnel that it is in the maintenance state, at the same time, the A1 line package 18 is attracted, and the K1 auxiliary contact is opened, at this time, the K1 terminal 2-6 and 1-5 is closed, the output end of the network unit 20 is connected with the antenna simulation unit 3, and the radio network transmitting end 2 receives the radio frequency signal through the terminal 1-5 and is connected to the ground, avoiding the radio frequency signal received by the radio network transmitting end 2 from entering the network unit 20 during testing, the antenna simulation unit 16 is set to simulate the impedance of the radio network transmitting end 2, and the radio network transmitting end 2 has different impedance values according to different heights and frequencies, when the radio network transmitting end 2 is erected, the radio network transmitting end 2 has a relatively fixed impedance value for the fixed frequency of the transmitter 8, and the antenna simulation unit 3 is pre-fabricated according to the measured data of the radio network transmitting end 2, the maintenance switch 14 selects a switch with a self-locking device to ensure that it is always closed after being pressed, at this time, the test port of the device is connected with the measuring end of the test instrument, and the network test begins, when the measurement is completed, the instrument is disconnected, and the maintenance switch 14 can be pressed again, the maintenance switch 14 is popped out, at this time, the maintenance indicator 17 is extinguished, the A1 / A2 line package is powered off, and the K1 / K2 terminal is reset, and the network unit 20 automatically restores the connection with the radio network transmitting end 2 and the transmitter 8, the man-machine interface 4 and the monitoring table 5 are used to observe the state of the switcher 1, the state of the first K1 normally closed contact 11, the second K1 normally closed contact 12, the K2 normally closed contact 13 and the maintenance switch 14 are observed through the observation port, and the switcher 1 is opened through the handle 7, and the operation of the switcher 1 is cooled through the heat dissipation slot 10.

[0041] The embodiments of the specific embodiment are the preferred embodiments of the application, not limited to the protection scope of the application, wherein the same parts are indicated by the same reference numerals. Therefore, any equivalent changes made according to the structure, shape and principle of the application should be covered by the protection scope of the application.

Claims

1. A maintenance switching device for a medium wave antenna matching network, comprising a switcher (1) and a switching assembly (21), characterized in that: The upper side of the switcher (1) is provided with a wireless network transmitting end (2) through bolt installation, and the side of the wireless network transmitting end (2) is provided with an antenna simulation unit (3), and the inner wall of the switcher (1) is provided with a switching assembly (21) through bolt installation on both sides.

2. The maintenance switching device for a medium wave antenna matching network according to claim 1, characterized in that The switching assembly (21) comprises a first K1 normally closed contact (11), a second K1 normally closed contact (12) and a K2 normally closed contact (13), and the side of the first K1 normally closed contact (11) is provided with the second K1 normally closed contact (12), and the side of the first K1 normally closed contact (11) is provided with the second K1 normally closed contact (12), and the side of the second K1 normally closed contact (12) away from the first K1 normally closed contact (11) is provided with the K2 normally closed contact (13).

3. The maintenance switching device for a medium wave antenna matching network of claim 1, wherein: The switching assembly (21) further comprises a maintenance switch (14) and a maintenance indicator lamp (17), and the maintenance switch (14) is provided with the maintenance indicator lamp (17) on the side away from the K2 normally closed contact (13), and the maintenance switch (14) and the maintenance indicator lamp (17) are electrically connected through wires.

4. The maintenance switching device for a medium wave antenna matching network of claim 1, wherein: The lower side of the switching assembly (21) is provided with a support plate (22) through bolt installation, and the edge of the support plate (22) is provided with a first test port (15), and the side of the first test port (15) is provided with a second test port (16).

5. The maintenance switching device for a medium wave antenna matching network of claim 1, wherein: The upper side of the switching assembly (21) is provided with an A1 line package (18), and the side of the A1 line package (18) is provided with an A2 line package (19), and the upper side of the A1 line package (18) and the A2 line package (19) is provided with a distribution network unit (20).

6. A maintenance switching device for a medium wave antenna matching network as claimed in claim 4, characterized in that: The side of the support plate (22) away from the switching assembly (21) is provided with a feeder (9), and the side of the feeder (9) away from the support plate (22) is provided with a transmitter (8), and the side of the transmitter (8) is provided with a DC24V voltage access end (23).

7. The maintenance switching device for a medium wave antenna matching network of claim 1, wherein: The switcher (1) comprises a man-machine interaction interface (4), a monitoring table (5), an observation port (6), a handle (7) and a heat dissipation groove (10), and the upper side of the man-machine interaction interface (4) is provided with a monitoring table (5), and the lower side of the man-machine interaction interface (4) is provided with an observation port (6), and the lower side of the observation port (6) is provided with a handle (7), and the side of the switcher (1) is provided with a heat dissipation groove (10).

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