A synchronous drive pitch mechanism

Abstract

The present invention discloses a synchronously driven pitch mechanism, which relates to the field of motor drive technology, in order to solve the problem of asynchronous rotation and unevenness of the left and right emitting surfaces of the antenna panel. The synchronously driven pitch mechanism comprises: a shell, a driving part, a connecting part and a rotating shaft; the driving part comprises a first driving part and a second driving part, and one end of the first driving part and the second driving part that is away from each other is fixedly connected to the shell; the connecting part comprises a through shaft arranged between the first driving part and the second driving part, and the two ends of the through shaft are respectively fixedly connected to the first driving part and the second driving part, driving the first driving part and the second driving part to rotate synchronously; two rotating shafts are respectively arranged at the two ends of the shell, one end of the rotating shaft extends out of the shell, and the other end is connected to the driving part, and the synchronous rotation of the driving part drives the rotating shaft to rotate synchronously. The synchronously driven pitch mechanism provided by the present invention is used to realize the synchronous deployment of two antenna panels.

Description

Technical Field

[0001] The present invention relates to the technical field of motor driving, and in particular to a synchronous driving pitch mechanism. Background Art

[0002] In order to balance transportation and operation, the array antenna usually needs to switch between horizontal and pitch states, and the pitch angle range is generally between 0° and 90°. In actual engineering applications, two rotating arms are usually used to push the array to flip to the working position, and servo control is used to drive the servo motors on both sides to ensure that the extension of the two arms is consistent. In traditional dual-arm synchronization, two motors drive the two rotating arms separately, and the servo-driven closed-loop control is used to ensure that the extension of the two arms is consistent. In fact, there is an asynchronous problem in the servo-driven closed-loop control. With the increasing complexity of radar equipment and the requirements for weight reduction, there are more and more pitch servo system failures caused by dual-arm electrical asynchrony problems.

[0003] In order to ensure the synchronization and flatness of the left and right emitting surfaces of the antenna panel, a synchronous driving pitch mechanism is required. Summary of the invention

[0004] The object of the present invention is to provide a synchronously driven pitch mechanism for ensuring synchronous unfolding or folding of planar antenna panels during operation and the flatness between the planar antenna panels.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A synchronously driven pitch mechanism, comprising:

[0007] case;

[0008] A driving part, comprising a first driving part and a second driving part, wherein the first driving part and the second driving part are respectively arranged on two sides of the interior of the housing, and ends of the first driving part and the second driving part that are away from each other are fixedly connected to the housing;

[0009] A connecting part, comprising a through shaft arranged between the first driving part and the second driving part, wherein two ends of the through shaft are respectively fixedly connected to the first driving part and the second driving part, so as to drive the first driving part and the second driving part to rotate synchronously;

[0010] There are two rotating shafts, which are respectively arranged at two ends of the shell. One end of the rotating shaft extends out of the shell, and the other end is connected to the driving part. The driving part rotates synchronously to drive the rotating shaft to rotate synchronously.

[0011] Compared with the prior art, in the synchronous drive pitch mechanism provided by the present invention, two identical drive parts are arranged on both sides of the shell, and the two drive parts are synchronously driven and connected through the through shaft of the connecting part, and then the synchronous drive pitch is completed through the output of the rotating shaft extending out of the shell, thereby realizing the synchronous rotation between the antenna panels and keeping the transmitting surface of the antenna panel flat.

[0012] Preferably, in the above synchronously driven pitch mechanism, the first driving unit and the second driving unit both include:

[0013] A driving motor is arranged at the bottom of the housing, and one end of the driving motor extends out of the housing;

[0014] A double worm gear drive mechanism is disposed in the housing, one end of which is drivingly connected to the drive motor;

[0015] A first gear, the first gear is connected to the double-worm gear worm gear driving mechanism, and the double-worm gear worm gear driving mechanism drives the first gear to rotate;

[0016] The second gear is meshed and connected with the first gear, the through shaft runs through the second gear, and the through shaft drives the first driving part and the second driving part on both sides to rotate synchronously.

[0017] With this arrangement, the driving connection drives the double worm gear drive mechanism to rotate, which drives the first gear meshing with the second gear to rotate. The rotating shaft is coaxially arranged with the second gear, which drives the rotating shafts on both sides to rotate synchronously in pitch.

[0018] Preferably, in the above-mentioned synchronous drive pitch mechanism, the double worm gear drive mechanism comprises:

[0019] turbine;

[0020] The worm gears are two in number and meshed with the two sides of the turbine respectively. The rotation of the two worm gears drives the turbine to rotate. In this way, the efficiency of turbine rotation is improved by setting up double worm gears, the self-locking ability is improved, the worm gear is prevented from reversing in the event of power failure, and the position of the rotating shaft is ensured to be stable and reliable in the event of power failure.

[0021] Preferably, in the above synchronously driven pitch mechanism, the double worms are tightly meshed with the turbine in opposite directions respectively. In this way, the double worms arranged on both sides of the turbine mesh in opposite directions, synchronously providing driving force for the turbine to ensure stable rotation of the turbine.

[0022] Preferably, in the above-mentioned synchronous drive pitch mechanism, the double worm gear turbine mechanism further includes a speed reduction mechanism, which is rotationally connected to the worm and is used to reduce the rotation speed of the drive motor. If provided, the motor and the worm gear turbine mechanism can be protected by adjusting the rotation speed of the drive motor output by providing a speed reduction mechanism.

[0023] Preferably, in the above synchronous drive pitch mechanism, the drive motor of the second drive unit is a backup drive motor, which is in a non-operating state during normal operation. If provided, the backup drive motor is provided to ensure that the entire system can continue to work when a single drive motor fails.

[0024] Preferably, in the above synchronously driven pitch mechanism, the bottom of the connecting portion is provided with an interface for connecting an external component, and the synchronously driven pitch mechanism is fixed to the external component through the interface. In this way, the synchronously driven pitch mechanism is connected to the external component through the interface, ensuring stable operation in the working state.

[0025] Preferably, in the above synchronous drive pitch mechanism, the second gear of the first drive unit is coaxially connected with the second gear of the second drive unit to realize transmission. Such an arrangement can improve the stability of the transmission process between the through shaft and the second gear, thereby improving the stability of the output of the rotating shaft, and ensuring the smooth rotation of the antenna panel until a whole panel is formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0027] Figure 1 It is a structural schematic diagram of a synchronously driven pitch mechanism in an embodiment of the present invention;

[0028] Figure 2 Schematic diagram of the structure of the double worm gear drive mechanism in an embodiment of the present invention.

[0029] Reference numerals:

[0030] 1-housing; 2-driving part; 3-connecting part; 4-rotating shaft; 21-first driving part; 22-second driving part; 23-driving motor; 24-double worm gear mechanism; 25-first gear; 26-second gear; 31-through shaft; 32-interface; 241-turbine; 242-worm; 243-reduction mechanism. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0034] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In order to balance transportation and operation, the array antenna usually needs to switch between horizontal and pitch states, and the pitch angle range is generally between 0° and 90°. In actual engineering applications, two rotating arms are usually used to push the array to flip to the working position, and servo control is used to drive the servo motors on both sides to ensure that the extension of the two arms is consistent. In traditional dual-arm synchronization, two motors drive the two rotating arms separately, and the servo-driven closed-loop control is used to ensure that the extension of the two arms is consistent. In fact, there is an asynchronous problem in the servo-driven closed-loop control. With the increasing complexity of radar equipment and the requirements for weight reduction, there are more and more pitch servo system failures caused by dual-arm electrical asynchrony problems.

[0037] In order to ensure the synchronization and flatness of the left and right emitting surfaces of the antenna panel, a synchronous driving pitch mechanism is required.

[0038] Embodiment 1:

[0039] See also Figure 1-Figure 2 The synchronous drive pitch mechanism provided in this embodiment includes a shell 1, a driving part 2, a connecting part and a rotating shaft; wherein the driving part 2 includes a first driving part 21 and a second driving part 22, the first driving part 21 and the second driving part 22 are respectively arranged on both sides of the inside of the shell 1, and one end of the first driving part 21 and the second driving part 22 away from each other is fixedly connected to the shell 1; the connecting part includes a through shaft 31 arranged between the first driving part 21 and the second driving part 22, and the two ends of the through shaft 31 are respectively fixedly connected to the first driving part 21 and the second driving part 22, so as to drive the first driving part 21 and the second driving part 22 to rotate synchronously; the number of the rotating shafts is two, which are respectively arranged at the two ends of the shell 1, one end of the rotating shaft extends out of the shell 1, and the other end is connected to the driving part 2, and the synchronous rotation of the driving part 2 drives the rotating shaft to rotate synchronously.

[0040] In this embodiment, the first driving part 21 and the second driving part 22 both include a driving motor 23, a double worm turbine mechanism 24, a first gear 25 and a second gear 26. The driving motor 23 is arranged at the bottom of the shell 1, and one end of the driving motor 23 extends out of the shell 1. The double worm turbine mechanism 24 is arranged in the shell 1, and one end is drivingly connected to the driving motor 23. The first gear 25 is connected to the double worm turbine mechanism 24, and the double worm turbine mechanism 24 drives the first gear 25 to rotate. The second gear 26 is meshed with the first gear 25. The second gear 26 passes through a through shaft 31, and the through shaft 31 drives the first driving part 21 and the second driving part 22 on both sides to rotate synchronously.

[0041] In this embodiment, the double worm turbine mechanism 24 includes a turbine 241, a worm 242 and a reduction mechanism 243. There are two worms 242, which are respectively meshed with two sides of the turbine 241. The rotation of the two worms 242 drives the turbine 241 to rotate. The reduction mechanism 243 is rotationally connected to the worm 242 to reduce the rotation speed of the drive motor 23.

[0042] In specific implementation, the first driving part 21 and the second driving part 22 are respectively arranged on the left and right sides of the shell 1, and one end of the two driving parts 21 and 22 that are far away from each other is fixedly connected to the shell 1. The through shaft 31 of the connecting part is arranged between the first driving part 21 and the second driving part 22, driving the driving parts 2 on the left and right sides to rotate synchronously. The two rotating shafts are respectively arranged at the two ends of the shell 1, one end is connected to the driving part 2, and the other end extends out of the shell 1. A driving motor 23 is respectively arranged at the bottom of the driving part 2. One end of the driving motor 23 is drivingly connected to the double worm turbine 24 in the shell 1, and the other end of the double worm turbine mechanism 24 is connected to the first gear 25. The first gear 25 is meshed with the second gear 26, and the reduction mechanism 243 arranged between the driving motor 23 and the worm 242 reduces the rotation speed output by the driving motor 23. In the working state, the driving motor 23 outputs a driving force to drive the double worm 242 to rotate, and the turbine 241 meshed with the worm 242 rotates accordingly, driving the first gear 25 and the second gear 26 to rotate synchronously. The through shaft 31 arranged between the driving parts 2 is coaxially connected with the second gear 26. The rotation of the through shaft 31 drives the driving parts 2 on the left and right sides to rotate synchronously, and the rotating shaft connected to the driving parts 2 rotates synchronously accordingly.

[0043] Through the above specific implementation process, it can be known that in the synchronous drive pitch mechanism provided by the present invention, two identical drive parts 2 are arranged on both sides of the shell 1, and the two drive parts 2 are synchronously connected through the through shaft 31 of the connecting part, and then the synchronous drive pitch is completed through the output of the rotating shaft extending out of the shell 1, so as to realize the synchronous rotation between the antenna panels and keep the transmitting surface of the antenna panel flat; by setting a double worm 242, the rotation efficiency of the turbine 241 is improved, the self-locking ability is improved, the worm 242 is avoided from reversing in the case of power failure, and the position of the rotating shaft is ensured to be stable and reliable in the case of power failure; by setting a reduction mechanism 243 to adjust the output speed of the drive motor 23, the motor and the worm 242 turbine 241 mechanism can be protected.

[0044] Embodiment 2:

[0045] See also Figure 1-Figure 2In this embodiment, based on the first embodiment, the driving motor 23 of the second driving unit 22 is a standby driving motor 23, which is in a non-operating state during normal operation. An interface 32 for connecting an external component is provided at the bottom of the connecting portion. The synchronous driving pitch mechanism is fixed to the external component through the interface 32, and the second gear 26 of the first driving unit 21 is coaxially connected with the second gear 26 of the second driving unit 22 to realize transmission.

[0046] During specific implementation: the first drive unit 21 and the second drive unit 22 are both provided with a drive motor 23, but under normal working conditions, the drive motor 23 of the second drive unit 22 is in a non-operating state and is only used as a standby. The drive motor 23 of the first drive unit 21 drives the double-worm turbine mechanism 24, driving the first gear 25 meshing with the turbine 241 to rotate, and the second gear 26 meshing with the first gear 25 rotates synchronously, and the second gear 26 of the second drive unit 22 rotates therewith through the through shaft 31, thereby driving the rotating shaft of the second drive unit 22 to rotate, so as to achieve the purpose of synchronous rotation of the rotating shafts on both sides. The provision of the standby drive motor 23 can ensure that the entire system can continue to work normally when a failure occurs in the drive motor 23 on one side; the interface 32 provided at the bottom of the connecting portion can fix the synchronously driven pitch mechanism on an external component to ensure the stable operation of the synchronously driven pitch mechanism.

[0047] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0048] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A synchronously driven pitch mechanism, characterized in that: include: case; A driving part, comprising a first driving part and a second driving part, wherein the first driving part and the second driving part are respectively arranged on two sides of the interior of the housing, and ends of the first driving part and the second driving part that are away from each other are fixedly connected to the housing; A connecting part, comprising a through shaft arranged between the first driving part and the second driving part, wherein two ends of the through shaft are respectively fixedly connected to the first driving part and the second driving part, so as to drive the first driving part and the second driving part to rotate synchronously; Rotating shafts, the number of the rotating shafts is two, and they are respectively arranged at the two ends of the shell, one end of the rotating shaft extends out of the shell, and the other end is connected to the driving part, and the synchronous rotation of the driving part drives the rotating shaft to rotate synchronously; The first driving unit and the second driving unit both include: A driving motor is arranged at the bottom of the housing, and one end of the driving motor extends out of the housing; A double worm gear drive mechanism is disposed in the housing, one end of which is drivingly connected to the drive motor; A first gear, the first gear is connected to the double-worm gear worm gear driving mechanism, and the double-worm gear worm gear driving mechanism drives the first gear to rotate; The second gear is meshed and connected with the first gear, the second gear passes through the through shaft, and the through shaft drives the first driving part and the second driving part on both sides to rotate synchronously; the double worm gear drive mechanism includes: turbine; The worm gears are two in number and are respectively meshed with the two sides of the turbine. The rotation of the two worm gears drives the turbine to rotate. The double worm gears are tightly meshed with the turbine in opposite directions.

2. The synchronously driven pitch mechanism according to claim 1, characterized in that: The double worm turbine mechanism also includes a speed reduction mechanism, which is rotationally connected to the worm and is used to reduce the rotation speed of the drive motor.

3. The synchronously driven pitch mechanism according to claim 1, characterized in that: The driving motor of the second driving unit is a standby driving motor and is in a non-operating state during normal operation.

4. The synchronously driven pitch mechanism according to claim 1, characterized in that: An interface for connecting an external component is arranged at the bottom of the connecting portion, and the synchronous driving pitch mechanism is fixed on the external component through the interface.

5. The synchronously driven pitch mechanism according to claim 1, characterized in that: The second gear of the first driving part is coaxially connected with the second gear of the second driving part to realize transmission.

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