CN201345408Y - Antenna lifting device - Google Patents

Abstract

The utility model discloses an antenna lifting device, which comprises an antenna tray and a support rod for supporting the antenna tray, and also includes a lifting mechanism capable of raising and lowering the antenna tray. The lifting mechanism includes a lifting screw, a screw nut that is arranged on the antenna tray and cooperates with the lifting screw, and a driving device that drives the lifting screw to move. The antenna lifting device described in the utility model can make the relatively high-power radar antenna conveniently pushed out of the cabin to work, and can work under high and low temperature, maximum 8-level wind, rainy weather and other environmental conditions. The system has a high degree of integration, a large carrying capacity, and the system cable connection has been completed in the cabin, which is convenient for the system to work.

Description

Antenna lifting device

technical field

The utility model relates to an antenna lifting device, in particular to an antenna lifting device installed in a shelter of a communication command vehicle.

Background technique

Whether it is military battlefield command or civilian emergency rescue and disaster relief, the scenes are changing rapidly, so higher requirements are put forward for the command system's rapid response capability, so the command system must be highly integrated and highly mobile. For communication command vehicles and the like For fast communication equipment, it is necessary to load a communication antenna.

Many mobile command systems that use larger radar antennas are usually equipped with vehicles or trailers for radar antennas separately when designing vehicles, or reserve space on a long vehicle platform to install shelters and antennas together. The above loading scheme makes the transportation capacity of the system not high, and it takes a lot of time to connect cables and debug when building the system, which reduces the rapid response capability of the system.

Utility model content

Purpose of the invention: The technical problem to be solved by the utility model is to provide an antenna lifting device for the deficiencies of the prior art.

Technical solution: The utility model discloses an antenna lifting device, which includes an antenna tray and a support rod for supporting the antenna tray, and also includes a lifting mechanism that can lift and lower the antenna tray.

In the utility model, the lifting mechanism includes a lifting screw, a screw nut arranged on the antenna tray to cooperate with the lifting screw, and a driving device for driving the lifting screw to move.

In the utility model, there are four lifting screw rods, which are arranged in a square shape and are respectively driven by synchronous driving devices.

In the utility model, preferably, there are four lifting screw rods, which are arranged in a square shape, and the lifting screw rods are driven by three torsion connecting rods, and a coupling is provided between the lifting screw rods and the torsion connecting rods; A lifting screw is driven by a drive unit. Therefore, only one driving device with higher power can be used to realize the driving, and the lifting is more stable.

In the utility model, the driving device includes a driving motor and a bevel gear box; the bevel gear box meshes with the lower part of the lifting screw rod, and the driving motor drives the lifting screw rod to move through the bevel gear box.

In the present utility model, preferably, a torque limiter is provided between the drive motor and the bevel gearbox. The output shaft of the motor is connected to the transmission chain through a torque limiter, and the maximum transmission torque of the torque limit is set to ensure that the motor slips when the lifting mechanism is stuck or other faults, so as to protect the safety of the transmission chain and other equipment due to mechanical overload. The maximum transmission torque of the set torque limiter in the system is about 20Nm.

In the present utility model, the antenna lifting device further includes a top cover with an opening in the middle and a glass fiber reinforced plastic cover for closing the opening.

In the utility model, the upper section of the support rod is provided with a positioning hole, and a positioning pin is provided in the positioning hole. Fasten and position the antenna tray and the support rod through the positioning hole and the positioning pin.

In the utility model, the torsion connecting rod and the lead screw are driven through the worm gear in the transmission box. Wherein the worm wheel rotates synchronously through the connection of the key and the screw rod. The structural characteristics of the worm gear drive ensure the structural self-locking performance, and realize the self-locking of the lifting device at any lifting height.

Beneficial effects: the antenna lifting device described in the utility model can make the relatively high-power radar antenna be pushed out of the cabin to work conveniently, and can work under high and low temperature, maximum 8 winds, rainy days and other environmental conditions. The system has a high degree of integration, a large carrying capacity, and the system cable connection has been completed in the cabin, which is convenient for the system to work.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Fig. 1 is a schematic structural diagram of the antenna lifting device described in the present invention.

Fig. 2 is a schematic structural diagram of a preferred embodiment of the antenna lifting device of the present invention.

Fig. 3 is a schematic diagram of the application of the antenna lifting device described in the present invention.

Detailed ways

As shown in Figure 1 and Figure 2, the utility model discloses an antenna lifting device, which includes an antenna tray 1 and a support rod 2 for supporting the antenna tray 1, and is characterized in that it also includes a Lowered lifting mechanism. The lifting mechanism includes a lifting screw 3 , a screw nut 4 arranged on the antenna tray 1 and matched with the lifting screw, and a driving device for driving the lifting screw 3 to move. There are four lifting screw rods 3, which are arranged in a square shape. Three torsion connecting rods 5 are transmitted between the lifting screw rods 3, and a coupling 6 is arranged between the lifting screw rods 3 and the torsion connecting rods 5; The screw rod 3 is driven by a driving device. The driving device includes a driving motor 7 and a bevel gear box 8; the bevel gear box 8 meshes with the lower part of the lifting screw 3, and the driving motor 7 drives the lifting screw 3 to move through the bevel gear box 8. A torque limiter 9 is provided between the drive motor 7 and the bevel gearbox 8 . The antenna lifting device also includes a top cover 10 with an opening in the middle and a glass fiber reinforced plastic cover 11 for closing the opening. The upper section of the support rod 2 is provided with a positioning hole 12 , and a positioning pin 13 is provided in the positioning hole 12 . The torsion connecting rod 5 and the lifting screw 3 are driven by the worm gear in the transmission box 15 .

In another embodiment of the present utility model, there are also four lifting screw rods 3 arranged in a square shape, but they are respectively driven by synchronous driving devices.

As shown in FIG. 3 , the antenna 14 located in the shelter is installed on the antenna tray 1 , and the antenna tray 1 rises or falls under the push of the lifting screw 3 .

The control system in the utility model realizes the electric lifting control of the lifting mechanism, and is mainly composed of an electric control box, a remote control box, 6 position detection switches and connecting cables. The control system has perfect safety protection measures, the main working characteristics:

1) It has the functions of input phase sequence detection and alarm. Detect the phase sequence of the external input three-phase AC power supply. If the phase sequence does not meet the phase sequence requirements, the system cannot be powered on and work. At the same time, the display light is always on and a "squeak" alarm is issued to ensure the correct lifting action;

2) With current overload protection function. An air switch is set in the circuit. When the input current is too large due to excessive driving load, the controller will automatically cut off the power supply to ensure that the motor is not damaged;

3) Limit detection switches are set at the end position of lifting/lowering, the raised floor position under the antenna base, the position covered by the glass fiber reinforced plastic cover and the position of the inner wall trunking cover, and each detection switch forms a series relationship to ensure that the electric lifting action has an interlocking protection function ;

4) The remote control box is provided with indicator lamps corresponding to each limit detection switch to display the status of each detection switch. When the indicator light is on, the controller cuts off the power supply of the motor and makes the drive motor unable to re-energize.

The utility model provides an idea and method of an antenna lifting device. There are many methods and approaches for realizing the technical solution. The above description is only a preferred implementation mode of the utility model. It should be pointed out that those skilled in the art In other words, on the premise of not departing from the principle of the utility model, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the utility model. All components that are not specified in this embodiment can be realized by existing technologies.

Claims (9)

1. An antenna lifting device, comprising an antenna tray (1) and a support rod (2) for supporting the antenna tray (1), characterized in that it also includes a lifting mechanism that can lift and lower the antenna tray (1) . 2. The antenna lifting device according to claim 1, characterized in that the lifting mechanism comprises a lifting screw (3), a screw nut ( 4) and a driving device for driving the lifting screw (3) to move. 3. The antenna lifting device according to claim 2, characterized in that there are four lifting screw rods (3), arranged in a square shape, and driven by synchronous driving devices respectively. 4. The antenna lifting device according to claim 2, characterized in that there are four lifting screw rods (3) arranged in a square shape, and three torsion connecting rods (5) are passed between the lifting screw rods (3). For transmission, a shaft coupling (6) is arranged between the lifting screw rod (3) and the torsion connecting rod (5); one of the lifting screw rods (3) is driven by a driving device. 5. The antenna lifting device according to claim 3 or 4, characterized in that, the driving device includes a driving motor (7) and a bevel gearbox (8); the bevel gearbox (8) and the lifting screw (3) The lower part is meshed, and the driving motor (7) drives the lifting screw (3) to move through the bevel gear box (8). 6. The antenna lifting device according to claim 5, characterized in that a torque limiter (9) is provided between the driving motor (7) and the bevel gearbox (8). 7. The antenna lifting device according to claim 5, characterized in that the antenna lifting device further comprises a top cover (10) with an opening in the middle and a glass fiber reinforced plastic cover (11) for closing the opening. 8. The antenna lifting device according to claim 5, characterized in that a positioning hole (12) is provided on the upper section of the support rod (2), and a positioning pin (13) is provided in the positioning hole (12). 9. The antenna lifting device according to claim 4, characterized in that the connection between the torsion link (5) and the lifting screw (3) is driven by a worm gear pair in the transmission box (15).

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