CN210686915U

CN210686915U - Antenna scanning frame gearbox with single motor driving two shafts to move

Info

Publication number: CN210686915U
Application number: CN201921259290.6U
Authority: CN
Inventors: 王江涛; 吴利刚
Original assignee: Xi'an Jiefeng Electromechanical Equipment Co Ltd
Current assignee: Xi'an Jiefeng Electromechanical Equipment Co Ltd
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2020-06-05
Anticipated expiration: 2029-08-05

Abstract

The utility model relates to an antenna scanning frame gearbox with a single motor driving two shafts to move, which comprises a servo motor and a reducer, wherein the reducer is arranged on the shell of the gearbox, and the other end of the reducer is connected with a first driving shaft and a second driving shaft in sequence and drives the two driving shafts to rotate simultaneously; a pitching synchronous belt wheel, a first gear and an electromagnetic clutch are mounted on the first driving shaft, the first gear is meshed with a second gear, the second gear is mounted on a pitching data conversion shaft, and one end of the pitching data conversion shaft is connected with a pitching photoelectric encoder through an elastic coupling; a lifting synchronous belt wheel, a third gear and a power-off brake are mounted on the second driving shaft, the third gear is meshed with a fourth gear, the fourth gear is mounted on a lifting data conversion shaft, and one end of the lifting data conversion shaft is connected with a lifting photoelectric coded disc through an elastic coupling; the utility model has the advantages that, can realize high location and the angle of high accuracy through the control unit, the reliability is high, and is with low costs.

Description

Antenna scanning frame gearbox with single motor driving two shafts to move

Technical Field

The utility model belongs to the technical field of the antenna scanning frame, concretely relates to antenna scanning frame gearbox of single motor drive diaxon motion, this gearbox is at present as the drive arrangement of antenna scanning frame in the darkroom a little, and this antenna scanning frame can carry out the automatic positioning test of radiation source, needs the diaxon motion function of automatic rising and automatic every single move.

Background

The antenna scanning frame is used as a common test device in a microwave darkroom, is mainly used for supporting and changing the position of a radiation source so as to be aligned with a test object, and plays an important role in the near-field test work of the antenna. Most of antenna scanning frames used in domestic microwave darkrooms are manual mechanisms, the adjustment mechanism of the antenna frame needs to be manually operated to realize the position adjustment of a radiation source, and the whole process is time-consuming and labor-consuming.

With the development of the technology, the automatic antenna scanning frame also has a plurality of forms, but all the automatic antenna scanning frames adopt a single motor to drive a single shaft, and the existing automatic antenna scanning frames with single shaft, two shafts and three shafts move need a plurality of driving control units, so that the cost is higher and the reliability is poor. At present, most two-axis antenna scanning frames are various by adopting two sets of driving mechanisms, most of the two-axis antenna scanning frames adopt a gear and rack transmission mode, and the cost is higher.

Therefore, the gearbox of the antenna scanning frame with two shafts driven by the single motor is designed, and the automatic lifting motion and the automatic pitching motion of the antenna scanning frame can be met.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provide an antenna scanning frame gearbox with a single motor driving two shafts to move, which can meet the requirements of automatic lifting motion and automatic pitching motion of an antenna scanning frame; the problem of adopting single motor drive diaxon is solved, can realize high-accuracy height location and angle through the control unit, the reliability is high, characteristics such as with low costs.

In order to achieve the above object, the utility model provides a following technical scheme:

a single motor driven two-axis motion antenna scanning frame gearbox comprises a servo motor and a speed reducer connected with the servo motor, wherein the speed reducer is arranged on a gearbox shell, and the gearbox shell is a supporting part of the whole mechanism; the other end of the speed reducer, which is far away from the servo motor, is sequentially connected with a first driving shaft and a second driving shaft and drives the first driving shaft and the second driving shaft to rotate simultaneously; a pitching synchronous belt wheel, a first gear and an electromagnetic clutch are mounted on the first driving shaft, the first gear is meshed with a second gear, the second gear is mounted on a pitching data conversion shaft, and one end of the pitching data conversion shaft is connected with a pitching photoelectric code disc through an elastic coupling; a lifting synchronous belt wheel, a third gear and a power-off brake are mounted on the second driving shaft, the third gear is meshed with a fourth gear, the fourth gear is mounted on a lifting data conversion shaft, and one end of the lifting data conversion shaft is connected with a lifting photoelectric coded disc through an elastic coupling; the lifting data conversion shaft is arranged above the second driving shaft, and the pitching data conversion shaft is arranged above the first driving shaft.

Furthermore, the pitching synchronous belt wheel and the lifting synchronous belt wheel rotate in the same direction at the same time, synchronous toothed belts are installed on the pitching synchronous belt wheel, an up-and-down sliding rack is installed on the synchronous toothed belts of the pitching synchronous belt wheel, and the up-and-down sliding rack drives the first gear to rotate.

Furthermore, the pitching synchronous belt wheel and the lifting synchronous belt wheel are respectively arranged on the first driving shaft and the second driving shaft through common flat keys.

Furthermore, the lifting photoelectric coded disc is a multi-turn absolute value encoder and is mainly used for measuring lifting height information in real time; the pitching photoelectric coded disc is a single-ring absolute value encoder and is mainly used for measuring the angle information of pitching motion in real time.

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

the utility model discloses an electromagnetic clutch switches with losing the electric brake, and then can be through single motor drive elevating movement and pitching motion, and the cost is with low costs than two motor drive.

The utility model can satisfy the automatic lifting motion and the automatic pitching motion of the antenna scanning frame; the problem of adopting single motor drive diaxon is solved, can realize high accuracy height positioning and angle through the control unit.

The utility model adopts the high-speed and high-precision brushless motor control technology, which greatly improves the precision of the system;

the utility model discloses be applied to certain model antenna scanning frame in the reality, its excellent performance, the reliability is high, has created higher value.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only for the purpose of more clearly illustrating the embodiments of the present invention or the technical solutions in the prior art, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative efforts.

Fig. 1 is a schematic view of the internal structure of the present invention;

in the figure, 1-servo motor, 2-reducer, 3-pitching synchronous belt wheel, 4-first gear, 5-second gear, 6-pitching photoelectric code disc, 7-electromagnetic clutch, 8-lifting synchronous belt wheel, 9-power-off brake, 10-lifting photoelectric code disc, 11-first driving shaft, 12-second driving shaft, 13-pitching data conversion shaft, 14-lifting data conversion shaft, 15-transmission box shell, 16-third gear and 17-fourth gear.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described with reference to the following specific embodiments, which are provided as illustration only and are not intended to limit the present invention.

The antenna scanning frame gearbox with the two shafts driven by the single motor as shown in fig. 1 comprises a servo motor 1 and a speed reducer 2 connected with the servo motor, wherein the speed reducer 2 is arranged on a gearbox shell 15, and the gearbox shell 15 is a supporting part of the whole mechanism; the other end of the speed reducer 2, which is far away from the servo motor 1, is sequentially connected with a first driving shaft 11 and a second driving shaft 12, and drives the first driving shaft 11 and the second driving shaft 12 to rotate simultaneously; the first driving shaft 11 is provided with a pitching synchronous belt wheel 3, a first gear 4 and an electromagnetic clutch 7, the first gear 4 is meshed with a second gear 5, the second gear 5 is arranged on a pitching data conversion shaft 13, and one end of the pitching data conversion shaft 13 is connected with a pitching photoelectric coded disc 6 through an elastic coupling; a lifting synchronous belt wheel 8, a third gear 16 and a power-off brake 9 are mounted on the second driving shaft 12, the third gear 16 is meshed with a fourth gear 17, the fourth gear 17 is mounted on a lifting data conversion shaft 14, and one end of the lifting data conversion shaft 14 is connected with a lifting photoelectric coded disc 10 through an elastic coupling; the elevation data conversion shaft 14 is provided above the second drive shaft 12, and the pitch data conversion shaft 13 is provided above the first drive shaft 11.

The electromagnetic clutch 7 controls engagement and disengagement of the clutch by turning on and off the coil. When the coil is electrified, magnetic force is generated, under the action of electromagnetic force, the spring piece of the armature is deformed, the movable disc and the armature are attracted together, and the clutch is in an engaged state; when the coil is powered off, the magnetic force disappears, the armature iron rebounds under the action of the elastic force of the spring piece, and the clutch is in a separation state. The electromagnetic clutch 7 has the following advantages:

1) high-speed response: the transmission of the torque is fast because of the dry type, and the convenient operation can be achieved.

2) The durability is strong: the heat dissipation is good, and the high-grade material is used, so that the high-frequency and high-energy heat dissipation device is durable even if used at high frequency.

3) The assembly and maintenance are easy: the magnetic field coil built-in the ball bearing is static, so that a middle core does not need to be taken out, a carbon brush does not need to be used, and the magnetic field coil is simple to use.

4) And (3) firmness and durability: the plate-shaped elastic sheet has no looseness even if the plate-shaped elastic sheet is strongly vibrated, and has good durability.

The power-off brake 9 is a friction plate brake which is electromagnetically separated (released) and is pressed by a spring during power off, and has the advantages of simple structure, wide adaptability, low noise, reliable braking and the like. The brake comprises a magnet yoke, an excitation coil, a spring, a brake disc, an armature, a spline housing, a mounting screw and the like, and is mounted at the rear end of the second driving shaft 12; the transmission shaft and the spline housing are connected with the brake disc. The structure is characterized in that:

1) the structure is compact: the axial size of the power-off brake is small, but the braking torque is large enough.

2) The response is quick: the power-off brake adopts a spring device to form braking torque, and the spring reset time is the braking response time.

3) The service life is long: the power-off brake adopts a novel friction material, and the performance of long service life is determined.

The utility model discloses a theory of operation does:

lifting movement:

the method comprises the steps that firstly, after an electromagnetic clutch 7 is powered on to be closed and an electric brake 9 is powered off to be disengaged, then a servo motor 1 drives a speed reducer 2, a pitching synchronous belt pulley 3 and a lifting synchronous belt pulley 8 are respectively installed on a first driving shaft 11 and a driving shaft 12 through common flat keys, the speed reducer drives the first driving shaft 11 and a second driving shaft 12 to simultaneously rotate, the pitching synchronous belt pulley 3 and the lifting synchronous belt pulley 8 simultaneously rotate in the same direction, synchronous toothed belts are respectively installed on the two belt pulleys, the lifting synchronous toothed belts drive a lifting pitching sliding sleeve to move up and down, the lifting synchronous toothed belts are connected with the lifting pitching sliding sleeve through pressing plate clamping screws, and the pitching synchronous toothed belts are connected with an up-down sliding rack on the lifting pitching sliding sleeve through the. The lifting photoelectric coded disc 10 is a multi-turn absolute value encoder and is mainly used for measuring lifting height information in real time; the pitching photoelectric coded disc 6 is a single-ring absolute value encoder and is mainly used for measuring the angle information of pitching motion in real time, and the pitching photoelectric coded disc 6 always keeps the angle information before the lifting motion is executed during the lifting motion.

Pitching motion:

firstly, the power-off brake 9 is powered off and closed, the electromagnetic clutch 7 is powered off and disconnected, then the servo motor 1 drives the speed reducer 2, the speed reducer 2 drives the first driving shaft 11 to rotate, the pitching synchronous belt pulley 3 is driven to rotate, the pitching synchronous belt pulley 3 drives the pitching synchronous belt to realize pitching motion, an upper sliding rack and a lower sliding rack are mounted on the pitching synchronous belt, the upper sliding rack and the lower sliding rack drive the first gear 4 to rotate, the pitching motion of the antenna is realized, and at the moment, the pitching photoelectric code disc 6 measures the angle information of the pitching motion of the antenna.

the utility model discloses be applied to certain model antenna scanning frame, excellent performance, the reliability is high, has created about 100 ten thousand RMB of value.

The present invention is not described in detail in the prior art.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A single motor driven two-axis motion antenna scanning frame gearbox comprises a servo motor (1) and a speed reducer (2) connected with the servo motor, and is characterized in that the speed reducer (2) is mounted on a transmission case shell (15), and the transmission case shell (15) is a supporting part of the whole mechanism; the other end of the speed reducer (2), which is far away from the servo motor (1), is sequentially connected with a first driving shaft (11) and a second driving shaft (12) and drives the first driving shaft (11) and the second driving shaft (12) to rotate simultaneously; a pitching synchronous belt wheel (3), a first gear (4) and an electromagnetic clutch (7) are mounted on the first driving shaft (11), the first gear (4) is meshed with a second gear (5), the second gear (5) is mounted on a pitching data conversion shaft (13), and one end of the pitching data conversion shaft (13) is connected with a pitching photoelectric coded disc (6) through an elastic coupling; a lifting synchronous belt wheel (8), a third gear (16) and a power-off brake (9) are mounted on the second driving shaft (12), the third gear (16) is meshed with a fourth gear (17), the fourth gear (17) is mounted on a lifting data conversion shaft (14), and one end of the lifting data conversion shaft (14) is connected with a lifting photoelectric coded disc (10) through an elastic coupling; the lifting data conversion shaft (14) is arranged above the second driving shaft (12), and the pitching data conversion shaft (13) is arranged above the first driving shaft (11).

2. The single-motor-driven two-axis-motion antenna scanning frame gearbox according to claim 1, wherein the pitching synchronous pulley (3) and the lifting synchronous pulley (8) rotate in the same direction at the same time, synchronous toothed belts are installed on the pitching synchronous pulley (3), and an up-and-down sliding rack is installed on the synchronous toothed belts of the pitching synchronous pulley (3), and the up-and-down sliding rack drives the first gear (4) to rotate.

3. A single motor driven two axis motion antenna gantry gearbox according to claim 1, characterized in that said pitch (3) and elevation (8) synchronization pulleys are mounted on the first (11) and second (12) drive shafts respectively by means of common flat keys.

4. The single-motor-driven two-axis-motion antenna scanning frame gearbox according to any one of claims 1 to 3, wherein the lifting photoelectric coded disc (10) is a multi-turn absolute value encoder and is mainly used for measuring lifting height information in real time; the pitching photoelectric coded disc (6) is a single-ring absolute value encoder and is mainly used for measuring angle information of pitching motion in real time.