Antenna lifting device and radar turntable assembly

Abstract

The utility model discloses an antenna lifting device and a radar rotary table assembly, and belongs to the field of radar antennae, and the antenna lifting device comprises a fixing unit which is of an annular structure, can be buckled on the outer surface of a rotary table and is fixed on the surface of the rotary table, and the fixing unit further comprises a connecting platform; the supporting unit is used for supporting the connecting platform; a mounting unit on which an antenna is mounted; the lifting unit comprises a lead screw, a limiting device and a lead screw lifter, the two ends of the lead screw are connected with the fixing unit and the mounting unit respectively, the lead screw can be driven by the lead screw lifter to enable the mounting unit to ascend and descend relative to the fixing unit, and the limiting device can limit rotation of the mounting unit.

Description

Technical Field

[0001] The present application relates to the field of radar antennas, and in particular to an antenna lifting device and a radar turntable assembly. Background Art

[0002] The radar turntable is generally installed in the radome on the top of a tower with a height of about 30m. The radar antenna is installed on the top of the turntable. The antenna needs to be moved to replace the internal mechanical parts. Due to the obstruction of the radome, it is inconvenient to use a crane. In the past, a scaffolding was built in the radome and the antenna was moved by hand winch. This solution requires manual handling and construction of bulky scaffolding on the high tower. It requires high-altitude work, and the safety of personnel is difficult to guarantee. The antenna array is easily damaged and the load-bearing requirements on the top of the tower are high. The entire installation and replacement process requires 4 people and takes more than 7 days, which is time-consuming and labor-intensive. Utility Model Content

[0003] The utility model aims at solving the problems in the prior art and discloses an antenna lifting device, comprising:

[0004] The fixing unit is a ring-shaped structure, which can be buckled on the outer surface of the turntable and fixed on the turntable surface, and the fixing unit also includes a connecting platform;

[0005] A supporting unit, which supports the connection platform;

[0006] a mounting unit on which an antenna is mounted;

[0007] The lifting unit includes a screw rod, a limiting device, and a screw rod lifter. The two ends of the screw rod are respectively connected to the fixed unit and the installation unit. The screw rod can be driven by the screw rod drive device to make the installation unit rise and fall relative to the fixed unit. The limiting device can limit the rotation of the installation unit.

[0008] In the improved solution, the installation unit includes at least one crossbeam and an antenna clamp installed on the crossbeam, and the antenna clamp is connected to the antenna and fixes the antenna.

[0009] In the improved solution, the limiting device includes at least one lifting rod, the distal end of the lifting rod is fixedly connected to the mounting unit, and the proximal end passes through the connecting platform of the fixing unit.

[0010] In the improved solution, the limiting device also includes a lower locking nut and an upper locking nut, and the lower locking nut and the upper locking nut fix the proximal end of the lifting rod on the connecting platform to limit the movement of the lifting rod.

[0011] In the improved solution, the support unit includes at least one support rod, the distal end of the support rod is connected to the connecting platform, and the proximal end is fixed on the turntable.

[0012] In the improved solution, the fixing unit includes two turntable hoops and four first locking bolts, and the four first locking bolts can connect the two turntable hoops to form a ring structure.

[0013] In the improved solution, the support rod is connected to the connecting platform via a second locking bolt.

[0014] In an improved solution, the proximal end of the support rod is fixed to the surface of the turntable.

[0015] In the improved solution, the distal end of the screw rod is fixedly connected to the mounting unit, the proximal end of the screw rod is movably connected to the connecting platform, the screw rod lifter is installed on the connecting platform and can drive the screw rod to rotate.

[0016] The present application also discloses a radar turntable assembly, comprising: the antenna lifting device, an antenna and a turntable.

[0017] The antenna lifting device of the present application greatly improves efficiency and safety, and has the following technical effects:

[0018] High efficiency: Two people can complete the installation of the antenna lifting device and the antenna lifting work within 2 hours;

[0019] Good safety: The antenna is lifted by the antenna lifting mechanism, and personnel do not need to climb high. The antenna is fixed throughout the whole process, without the risk of damage or overturning, and there is no special requirement for the load-bearing capacity of the tower top;

[0020] Easy to use: The dedicated antenna lifting mechanism adopts a labor-saving mechanism, which only requires 2 people to operate with one hand to complete the lifting of nearly 400kg antenna; it has a self-locking mechanism, which can be stopped at any time during the lifting;

[0021] Convenient transportation: The antenna lifting mechanism is lightweight, weighing only 200kg, and can be decomposed into 8 parts, making it easy to transport by road and carry to the tower.

[0022] Good economy: The cost of the antenna lifting mechanism is only 50% of the scaffolding method, and it can be reused, and the subsequent cost can be as low as 20%. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the antenna lifting device of the present application;

[0024] Figure 2 It is a schematic diagram of the radar turntable assembly;

[0025] Markings in the figure: 1-first locking bolt, 2-turntable clamp, 3-second locking bolt, 4-support rod, 5-lower locking nut, 6-upper locking nut, 7-lifting rod, 8-screw base, 9-lifting base, 10-antenna clamp, 11-crossbeam, 12-screw, 13-screw lift, 14-turntable, 15-antenna. DETAILED DESCRIPTION

[0026] The utility model is described in detail below in conjunction with the accompanying drawings.

[0027] like Figure 2 As described above, this embodiment discloses a radar turntable assembly, including an antenna lifting device, an antenna 15 and a turntable 14, wherein the antenna lifting device is fixed on the turntable 14, and the antenna 15 is fixed on the antenna lifting device.

[0028] like Figure 1 As shown, this embodiment discloses an antenna lifting device, which includes a fixing unit, a supporting unit, a mounting unit and a lifting unit.

[0029] like Figure 1 and Figure 2 As shown, the fixing unit is a ring-shaped structure, which can be buckled on the outer surface of the turntable 14 and fixed on the surface of the turntable 14. The fixing unit also includes a connecting platform.

[0030] Continue as Figure 1 As shown, the fixing unit includes two turntable clamps 2 and four first locking bolts 1. The four first locking bolts 1 can connect the two turntable clamps 2 to form an annular structure, and the annular structure is preferably a circular ring. The two turntable clamps 2 are semicircular ring structures, and the two ends of each turntable clamp 2 are provided with protruding connecting plates. Each pair of connecting plates is connected by two first locking bolts 1. The first locking bolts 1 can adjust the tightness, and then adjust the size of the ring formed by the turntable clamp 2. When in use, firstly, each turntable clamp 2 is buckled on the turntable 14, and then the two turntable clamps 2 are connected by the first locking bolts 1.

[0031] More specifically, Figure 1 As shown, the middle position of each turntable clamp 2 is provided with the connection platform, and the support unit supports the connection platform. The support unit includes four support rods 4, such as Figure 2 As shown, the distal end of the support rod 4 is connected to the connecting platform, and the proximal end is fixed on the turntable 14. More specifically, the support rod 4 is connected to the connecting platform via the second locking bolt 3. Figure 1As shown, the connection platform is provided with a hollow channel, the second locking bolt 3 is located in the hollow channel, and each connection platform is supported by two support rods 4. The proximal end of the support rod 4 is fixed to the surface of the turntable 14. More specifically, the surface of the turntable 14 is provided with a protruding portion, the protruding portion is the turntable base, and the proximal end of the support rod 4 is fixed to the protruding portion; more specifically, the proximal end of the support rod 4 is fixed to the protruding portion by a bolt, thereby being able to support the connection platform, so that the connection platform can withstand greater force.

[0032] like Figure 1 and Figure 2 As shown, the mounting unit is mounted with an antenna 15; the mounting unit includes a crossbeam 11 and an antenna clamp 10 mounted on the crossbeam 11, and the antenna clamp 10 is connected to the antenna 15 and fixes the antenna 15. More specifically, each connection platform corresponds to one mounting unit, and each mounting unit is provided with two antenna clamps 10, and the four antenna clamps 10 together fix the antenna 15; the antenna clamp 10 and the crossbeam 11 are detachably connected. More specifically, a channel is provided in the middle of the antenna clamp 10, and the antenna can pass through the channel and be fixed.

[0033] A lifting unit is provided between the installation unit and the connection platform. Figure 1 As shown, the lifting unit includes a limiting device, a screw lift 13, a screw 12, and a screw base 8. The two ends of the screw 12 are respectively connected to the connecting platform of the fixed unit and the mounting unit. The screw 12 can be driven to rotate by the screw lift 13 so that the mounting unit can be lifted or lowered relative to the connecting platform of the fixed unit. The limiting device can limit the rotation of the mounting unit. More specifically, the distal end of the screw 12 is fixedly connected to the mounting unit, and the proximal end of the screw is movably connected to the connecting platform. The screw lift 13 is installed on the connecting platform and can drive the screw to rotate. The distal end of the screw 12 is connected to the screw base 8; more specifically, the proximal end of the screw is screw-connected to the connecting platform. The rotation of the screw can move the mounting unit in the vertical direction. In order to fix the position of the mounting unit, in a specific scheme, the limiting device includes two lifting rods 7, such as Figure 1 As shown, the distal end of the lifting rod 7 is fixedly connected to the mounting unit, and the proximal end passes through the connecting platform of the fixing unit; more specifically, the connecting platform is vertically provided with a channel running through from top to bottom, and the proximal end of the lifting rod 7 passes through the channel. Through this design, on the one hand, the mounting unit can be restricted from rotating with the screw rod 12, thereby enabling the mounting unit to move up and down, and at the same time, it plays a role in stabilizing the mounting unit; the end of the lifting rod 7 is connected to a lifting base 9.

[0034] When the installation unit is fixed at a certain position by the screw lift 13, in order to fix the installation unit, in a more specific scheme, the limiting device also includes a lower locking nut 5 and an upper locking nut 6, and the lower locking nut 5 and the upper locking nut 6 fix the proximal end of the lifting rod 7 on the connecting platform to limit the movement of the lifting rod 7.

[0035] When lifting or lowering the antenna, first loosen the lower locking nut 5 and the upper locking nut 6 to release the vertical freedom of the lifting rod 7 relative to the turntable clamp 2, start the screw lift 13, and move the screw 12 upward or downward to drive the antenna to lift or lower. When the antenna is lifted or lowered to the desired position, or needs to be paused in the middle, rotate the lower locking nut 5 and the upper locking nut 6 to lock the lifting rod 7 relative to the turntable clamp 2, and together with the screw 12, support the weight of the antenna.

[0036] The two turntable clamps 2 are locked with the turntable in an embracing manner through the first locking bolts 1, which generates a large friction force in the vertical direction. In addition, the bottom of the turntable clamp 2 is connected to the turntable base through the support rod 4 to form a solid support platform, which serves as the load-bearing foundation of the antenna. The present application sets a crossbeam 11 at the top, and installs the antenna clamp 10 on the crossbeam 11 to lock the antenna, and then connects the crossbeam 11 to the connecting platform through the lifting rod 7. After the antenna is disconnected from the turntable, the weight of the antenna falls onto the turntable clamp 2 through the crossbeam 11 and the lifting rod 7 to form a supporting structure. A screw lift 13 is installed between the crossbeam 11 and the connecting platform. By turning the handle of the screw lift, the antenna 15 can be lifted or lowered.

[0037] The antenna lifting mechanism of the present application has a simple structure and is reusable, with good economy; it can be disassembled into multiple parts for easy transportation; the lifting process is smooth and controllable, no high-altitude operations are required, and equipment and personnel safety accidents can be avoided; it is easy to use, labor-saving and efficient.

[0038] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An antenna lifting device, characterized in that: Included are: A fixing unit, which is an annular structure and can be buckled onto the outer surface of the turntable (14) and fixed on the surface of the turntable (14), and the fixing unit also includes a connecting platform; A supporting unit, which supports the connection platform; A mounting unit on which an antenna (15) is mounted; A lifting unit comprises a limiting device, a screw lift (13), and a screw rod (12), wherein the two ends of the screw rod (12) are respectively connected to a connecting platform of a fixed unit and a mounting unit, the screw rod (12) can be driven by the screw lift (13) to enable the mounting unit to be lifted relative to the fixed unit, and the limiting device can limit the rotation of the mounting unit.

2. The antenna lifting device according to claim 1, characterized in that: The installation unit comprises at least one crossbeam (11) and an antenna clamp (10) installed on the crossbeam (11); the antenna clamp (10) is connected to the antenna (15) and fixes the antenna (15).

3. The antenna lifting device according to claim 2, characterized in that: The limiting device comprises at least one lifting rod (7), the distal end of the lifting rod (7) being fixedly connected to the mounting unit, and the proximal end of the lifting rod (7) passing through a connecting platform of the fixing unit.

4. The antenna lifting device according to claim 3, characterized in that: The limiting device further comprises a lower locking nut (5) and an upper locking nut (6), wherein the lower locking nut (5) and the upper locking nut (6) fix the proximal end of the lifting rod (7) on the connecting platform to limit the movement of the lifting rod (7).

5. The antenna lifting device according to claim 4, characterized in that: The support unit comprises at least one support rod (4), the distal end of the support rod (4) is connected to the connection platform, and the proximal end is fixed on the turntable.

6. The antenna lifting device according to claim 5, characterized in that: The fixing unit comprises two turntable clamps (2) and four first locking bolts (1), and the four first locking bolts (1) are capable of connecting the two turntable clamps (2) to form a ring structure.

7. The antenna lifting device according to claim 6, characterized in that: The support rod (4) is connected to the connecting platform via a second locking bolt (3).

8. The antenna lifting device according to claim 7, characterized in that: The proximal end of the support rod (4) is fixed on the surface of the turntable.

9. The antenna lifting device according to claim 8, characterized in that: The distal end of the screw rod (12) is fixedly connected to the mounting unit, the proximal end of the screw rod (12) is movably connected to the connecting platform, and the screw rod lifter (13) is installed on the connecting platform and is capable of driving the screw rod (12) to rotate.

10. A radar turntable assembly, characterized in that: Included are: The antenna lifting device, antenna (15) and turntable (14) as claimed in any one of claims 1 to 9.

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