阅读说明：本技术 一种超长抛物柱面天线展开卸载系统及方法 (System and method for unfolding and unloading ultra-long parabolic cylinder antenna ) 是由 朱佳龙 马小飞 郑士昆 黄志荣 解芳芳 李怡晨 陈卓 于 2021-07-30 设计创作，主要内容包括：本发明提供了一种超长抛物柱面天线展开卸载系统及方法,包括反射器卸载系统、馈源卸载系统和天线驱动支撑机构卸载系统；所述反射器卸载系统位于抛物柱状网面反射器的上方并与抛物柱状网面反射器连接,用于卸载抛物柱状网面反射器；所述馈源卸载系统位于天线馈源的上方并与馈源连接,用于卸载馈源；所述天线驱动支撑机构卸载系统用于卸载天线驱动支撑机构,包括丝杠卸载和同步三角框卸载,丝杠卸载通过底部支撑的卸载方式卸载天线驱动支撑机构的驱动丝杠；同步三角框卸载通过底部支撑的卸载方式卸载天线驱动支撑机构的同步三角框。该卸载系统吊点少,结构简单,成本低,卸载效率高,可重复使用,且各组件之间的卸载装置运动具有协调性且互不干涉。(The invention provides a system and a method for unfolding and unloading an ultra-long parabolic cylinder antenna, which comprises a reflector unloading system, a feed source unloading system and an antenna driving support mechanism unloading system; the reflector unloading system is positioned above the parabolic cylindrical net surface reflector, is connected with the parabolic cylindrical net surface reflector and is used for unloading the parabolic cylindrical net surface reflector; the feed source unloading system is positioned above the antenna feed source, connected with the feed source and used for unloading the feed source; the antenna driving support mechanism unloading system is used for unloading the antenna driving support mechanism and comprises lead screw unloading and synchronous triangular frame unloading, and the lead screw unloading is used for unloading a driving lead screw of the antenna driving support mechanism in an unloading mode of bottom support; and unloading the synchronous triangular frame of the antenna driving supporting mechanism in an unloading mode of bottom support. The unloading system has few lifting points, simple structure, low cost, high unloading efficiency and reusability, and the motion of the unloading device among the components is coordinated and does not interfere with each other.)

1. An unfolding unloading system for an ultra-long parabolic cylinder antenna is characterized by comprising a reflector unloading system, a feed source unloading system and an antenna driving support mechanism unloading system;

the reflector unloading system is positioned above the parabolic cylindrical net surface reflector, is connected with the parabolic cylindrical net surface reflector and is used for unloading the parabolic cylindrical net surface reflector;

the feed source unloading system is positioned above the antenna feed source, connected with the feed source and used for unloading the feed source;

the antenna driving support mechanism unloading system is used for unloading the antenna driving support mechanism and comprises lead screw unloading and synchronous triangular frame unloading, and the lead screw unloading is used for unloading a driving lead screw of the antenna driving support mechanism in an unloading mode of bottom support; and unloading the synchronous triangular frame of the antenna driving supporting mechanism in an unloading mode of bottom support.

2. The superlong parabolic cylinder antenna deployment unloading system of claim 1, wherein the reflector unloading system comprises: the device comprises a reflector unloading truss, a reflector two-dimensional plane type unloading slide rail and a reflector suspension assembly;

the reflector unloading truss is used for supporting the reflector two-dimensional plane type unloading sliding rail;

the reflector two-dimensional plane type unloading slide rail comprises a hanging bracket, a long guide rail and a transverse guide rail, wherein the hanging bracket is fixedly connected with the reflector unloading truss, the long guide rail is fixedly connected with the hanging bracket, and the transverse guide rail is hung on the long guide rail through a pulley and can slide along the long guide rail;

the reflector suspension assembly is fixed on a transverse guide rail of the two-dimensional planar unloading slide rail of the reflector, and the lower end of the reflector suspension assembly is fixed with a parabolic cylindrical net surface reflector.

3. The system of claim 2, wherein the cross-rails are layered and staggered, and comprise, from top to bottom: the net surface transverse guide rail is used for unloading the parabolic columnar net surface, the M-shaped truss transverse guide rail is used for unloading the M-shaped truss, and the folding telescopic arm transverse guide rail is used for unloading the folding telescopic arm.

4. The system of claim 2, wherein the reflector suspension assembly comprises a mesh suspension assembly, an M-truss suspension assembly, and a folding telescopic arm suspension assembly; the net surface suspension assembly comprises a suspension wire, a spring and a pulley, the pulley is matched with the net surface transverse guide rail, and a parabolic cylindrical net surface is suspended below the pulley through the suspension wire and the spring;

the M-shaped truss suspension assembly comprises a suspension wire, a spring and a pulley, the pulley is matched with the transverse guide rail of the M-shaped truss, and the M-shaped truss is suspended below the pulley through the suspension wire and the spring;

the folding telescopic boom suspension assembly comprises a balance weight, two groups of pulleys and a suspension wire, wherein the two groups of pulleys are suspended at two ends of a transverse guide rail of the folding telescopic boom, the balance weight is suspended under one group of pulleys through the suspension wire, and the folding telescopic boom is suspended under the other group of pulleys through the suspension wire.

5. The ultra-long parabolic cylinder antenna deployment offload system of claim 1, wherein the feed offload system comprises: the feed source unloading truss, the feed source two-dimensional plane type unloading slide rail and the feed source suspension assembly are arranged on the feed source unloading truss;

the feed source unloading truss is used for supporting the feed source two-dimensional plane type unloading slide rail;

the feed source two-dimensional plane type unloading sliding rail comprises a hanging bracket, a long guide rail and a transverse guide rail, wherein the hanging bracket is fixedly connected with the feed source unloading truss, the long guide rail is fixedly connected with the hanging bracket, and the transverse guide rail is hung on the long guide rail through a pulley and can slide along the long guide rail;

the feed source suspension assembly comprises a portal frame, a balance weight, a pulley and a suspension wire, the pulley is suspended below the transverse guide rail, one side of the pulley is suspended with the balance weight through the suspension wire, the other side of the pulley is suspended with the portal frame through the suspension wire, and the portal frame is connected with the feed source to unload the feed source.

6. The unfolding unloading system for the ultra-long parabolic cylinder antenna according to claim 5, wherein the portal frame comprises a left cantilever, a left connecting shaft, a right cantilever, a right connecting shaft and a cross beam, the left connecting shaft is mounted at the lower end of the left cantilever, the right connecting shaft is mounted at the lower end of the right cantilever, the upper ends of the left cantilever and the right cantilever are mounted at the left side and the right side of the cross beam, and the left connecting shaft and the right connecting shaft are hinged with the feed daughter board at the mass centers of the two sides of the feed daughter board.

7. The unfolding unloading system for the ultra-long parabolic cylinder antenna according to claim 1, wherein the lead screw unloading comprises three motors (i/ii/iii), a lead screw support frame i and a lead screw support frame ii; the lead screw support frame I comprises a truss base I, a left support warping rod I, a right support warping rod I and 2 balance weights; the lead screw support frame II comprises a truss base II, a support warping rod III and 4 balance weights; the left support warping rod I and the right support warping rod I are in a group and hinged to the truss base I, the left support warping rod II and the right support warping rod II are in a group, and the left support warping rod III and the right support warping rod III are in a group and hinged to different heights of the truss base II respectively; the one end that supports the stick-up pole and be close to drive lead screw is the near-end, the one end of keeping away from drive lead screw is the distal end, the distal end that each supports the stick-up pole hangs the counter weight, the near-end that each supports the stick-up pole is as supporting the end, it links to each other with control motor I's pivot through the drop wire to support stick-up pole I left side and the near-end that supports the stick-up pole I right side, it links to each other with control motor II's pivot through the drop wire to support stick-up pole II left side and the near-end that supports the stick-up pole III right side, it links to each other with control motor III's pivot through the drop wire to support stick-up pole III right side near-end, two support stick-up poles in each group stick-up or fall down under control motor's drive, unload drive lead screw in proper order.

8. The unfolding unloading system for the ultra-long parabolic cylinder antenna as recited in claim 7, wherein two deep groove ball bearings are mounted at the proximal end of each support tilting rod, and two ends of the lead screw are arranged on the two deep groove ball bearings and rotate tangentially with the two deep groove ball bearings.

9. The unfolding unloading system for the ultra-long parabolic cylinder antenna according to claim 7, wherein each control motor is matched with an infrared sensing device, the triggering point position of the infrared sensing device corresponds to the front of the two supporting tilting rods in each group respectively, when the synchronous triangular frame moves to the triggering point position of the infrared sensing device, the infrared sensing device controls the start-stop and the forward-reverse rotation of the motors, and the two supporting tilting rods in each group are driven by the control motors to unload the driving screw rods sequentially.

10. The system of claim 7, wherein the synchronized triangular frame offloading system comprises a ground rail and a synchronized triangular frame support frame, wherein the ground rail is laid on the ground and positioned between truss base I and truss base II; the synchronous triangular frame support frame comprises an adapter plate, a profile supporting rod and an embracing seat, wherein the adapter plate is fixedly connected with a guide rail sliding block on a ground guide rail, the profile supporting rod is supported on the adapter plate, and the embracing seat is fixed on the profile supporting rod and fixedly connected with the synchronous triangular frame.

11. The system for unfolding and unloading an ultra-long parabolic cylinder antenna according to claim 1, further comprising a simulation wall, wherein the simulation wall is fixedly connected with the antenna driving support mechanism to serve as an antenna fixing boundary.

12. An unfolding and unloading method of an ultra-long parabolic cylinder antenna is characterized by comprising the following steps:

the first synchronous triangular frame I is supported by a synchronous triangular frame supporting frame I and is driven by a driving lead screw (I/II/III) to move forwards along a ground guide rail; before the synchronous triangular frame I is not moved to the lead screw support frame, the right near end of the support tilting rod (I/II/III) tilts, the left near end of the support tilting rod (I/II/III) collapses, and the lead screw (I/II/III) is driven to always keep an initial unloading state; the reflector and the feed source are unfolded simultaneously under the driving of the synchronous triangular frame I, and at the moment, transverse sliding rails in a reflector unloading system and a feed source unloading system start to move towards the unfolding direction of the antenna;

when the synchronous triangular frame I moves to the position of the trigger point of the infrared sensing device in the left front of the support tilting rod (I/II/III) of the screw support frame (I/II), the infrared sensing device controls the motor to start, the left near end of the support tilting rod (I/II/III) tilts, the right near end of the support tilting rod (I/II/III) collapses, the synchronous triangular frame I continues to move, when the synchronous triangular frame I moves to the position of the trigger point of the infrared sensing device in the right front of the support tilting rod (I/II/III) of the screw support frame (I/II), the infrared sensing device controls the motor to start again, the left near end of the support tilting rod (I/II/III) collapses, and the right near end of the support tilting rod (I/II/III) tilts; when the folding rod between the synchronous triangular frame I and the synchronous triangular frame II is unfolded and straightened, the second synchronous triangular frame II is supported by the synchronous triangular frame supporting frame II and is driven by a driving lead screw (I/II/III) to move along a ground guide rail, the unloading processes of the reflector unloading system, the feed source unloading system and the driving lead screw (I/II/III) are the same as above, when the last synchronous triangular frame is unfolded in place, the reflector and the feed source are unfolded in place simultaneously, and the antenna unfolding is completed.

Technical Field

The invention belongs to the technical field of zero-gravity multidimensional unfolding of antennas, and particularly relates to an unfolding and unloading system and method for an ultra-long parabolic cylinder antenna, which are used for assisting in simulating an in-orbit weightless state of a product and verifying an in-orbit motion function of the product.

Background

With the increasing development of aerospace industry, higher requirements are put forward on new spacecraft ground test equipment. The zero-gravity multidimensional expansion experiment device is developed in order to meet the construction requirements of aerospace projects, the self gravity of a product is balanced, and the zero-gravity multidimensional expansion experiment device is used for simulating the weightless environment of the product in space.

As the size of the antenna increases, the influence of the ground gravity environment also increases. For antennas with different structural forms and different unfolding modes, corresponding unloading equipment needs to be developed according to the structure, the unfolding mode and the motion track of the antennas. For an ultra-long (n x 10, n is more than or equal to 1) antenna with high precision requirement, such as an ultra-long parabolic cylinder antenna, unloading is required not only at the starting and ending of the unfolding, but also in the whole unfolding process.

The ultra-long parabolic cylinder antenna disclosed in chinese patent CN110661075A includes: the antenna comprises a reflector assembly, a feed source assembly and a driving support mechanism assembly, wherein the movement of each assembly is space multidimensional movement, and all the assemblies are synchronously unfolded in the unfolding process of the antenna. Aiming at the characteristics that the antenna has an overlong size and can be expanded along the length direction, the unloading system firstly needs to consider the unfolding motion unloading of each component, and needs to ensure that the unloading device also has expansibility along the length direction; secondly, the movement of the unloading device of each component is ensured to be coordinated and not interfered with each other. The existing unloading systems can not solve the problems faced by the unloading of the ultra-long parabolic cylinder antenna.

Disclosure of Invention

In order to overcome the defects in the prior art, the inventor of the invention carries out intensive research, and provides a system and a method for unfolding and unloading an ultra-long parabolic cylinder antenna aiming at the structure, the motion track and the unfolding mode of each component of the ultra-long parabolic cylinder antenna, so that the unloading requirement in the unfolding process of the antenna structure is met in the simplest and most reliable mode.

The technical scheme provided by the invention is as follows:

in a first aspect, an unfolding unloading system for an ultra-long parabolic cylinder antenna comprises a reflector unloading system, a feed source unloading system and an antenna driving support mechanism unloading system;

the reflector unloading system is positioned above the parabolic cylindrical net surface reflector, is connected with the parabolic cylindrical net surface reflector and is used for unloading the parabolic cylindrical net surface reflector;

the feed source unloading system is positioned above the antenna feed source, connected with the feed source and used for unloading the feed source;

the antenna driving support mechanism unloading system is used for unloading the antenna driving support mechanism and comprises lead screw unloading and synchronous triangular frame unloading, and the lead screw unloading is used for unloading a driving lead screw of the antenna driving support mechanism in an unloading mode of bottom support; and unloading the synchronous triangular frame of the antenna driving supporting mechanism in an unloading mode of bottom support.

Further, the reflector unloading system comprises: the device comprises a reflector unloading truss, a reflector two-dimensional plane type unloading slide rail and a reflector suspension assembly;

the reflector unloading truss is used for supporting the reflector two-dimensional plane type unloading sliding rail;

the reflector two-dimensional plane type unloading slide rail comprises a hanging bracket, a long guide rail and a transverse guide rail, wherein the hanging bracket is fixedly connected with the reflector unloading truss, the long guide rail is fixedly connected with the hanging bracket, and the transverse guide rail is hung on the long guide rail through a pulley and can slide along the long guide rail;

the reflector suspension assembly is fixed on a transverse guide rail of the two-dimensional planar unloading slide rail of the reflector, and the lower end of the reflector suspension assembly is fixed with a parabolic cylindrical net surface reflector.

Further, transverse guide adopts layered structure and crisscross the placing, includes from top to bottom: the net surface transverse guide rail is used for unloading the parabolic columnar net surface, the M-shaped truss transverse guide rail is used for unloading the M-shaped truss, and the folding telescopic arm transverse guide rail is used for unloading the folding telescopic arm.

Further, the reflector suspension assembly comprises a net surface suspension assembly, an M-shaped truss suspension assembly and a folding telescopic arm suspension assembly; the net surface suspension assembly comprises a suspension wire, a spring and a pulley, the pulley is matched with the net surface transverse guide rail, and a parabolic cylindrical net surface is suspended below the pulley through the suspension wire and the spring;

the M-shaped truss suspension assembly comprises a suspension wire, a spring and a pulley, the pulley is matched with the transverse guide rail of the M-shaped truss, and the M-shaped truss is suspended below the pulley through the suspension wire and the spring;

the folding telescopic boom suspension assembly comprises a balance weight, two groups of pulleys and a suspension wire, wherein the two groups of pulleys are suspended at two ends of a transverse guide rail of the folding telescopic boom, the balance weight is suspended under one group of pulleys through the suspension wire, and the folding telescopic boom is suspended under the other group of pulleys through the suspension wire.

Further, the feed offload system comprises: the feed source unloading truss, the feed source two-dimensional plane type unloading slide rail and the feed source suspension assembly are arranged on the feed source unloading truss;

the feed source unloading truss is used for supporting the feed source two-dimensional plane type unloading slide rail;

the feed source two-dimensional plane type unloading sliding rail comprises a hanging bracket, a long guide rail and a transverse guide rail, wherein the hanging bracket is fixedly connected with the feed source unloading truss, the long guide rail is fixedly connected with the hanging bracket, and the transverse guide rail is hung on the long guide rail through a pulley and can slide along the long guide rail;

the feed source suspension assembly comprises a portal frame, a balance weight, a pulley and a suspension wire, the pulley is suspended below the transverse guide rail, one side of the pulley is suspended with the balance weight through the suspension wire, the other side of the pulley is suspended with the portal frame through the suspension wire, and the portal frame is connected with the feed source to unload the feed source.

Further, the portal frame includes left cantilever, left connecting axle, right cantilever, right connecting axle and crossbeam, and left connecting axle is installed in left cantilever lower extreme, and right connecting axle is installed in right cantilever lower extreme, and the left and right sides in the crossbeam is installed to the upper end of left cantilever and right cantilever, and left connecting axle and right connecting axle are articulated with the feed daughter board in feed daughter board both sides barycenter department.

Further, the screw unloading device comprises three motors (I/II/III), a screw supporting frame I and a screw supporting frame II; the lead screw support frame I comprises a truss base I, a left support warping rod I, a right support warping rod I and 2 balance weights; the lead screw support frame II comprises a truss base II, a support warping rod III and 4 balance weights; the left support warping rod I and the right support warping rod I are in a group and hinged to the truss base I, the left support warping rod II and the right support warping rod II are in a group, and the left support warping rod III and the right support warping rod III are in a group and hinged to different heights of the truss base II respectively; the one end that supports the stick-up pole and be close to drive lead screw is the near-end, the one end of keeping away from drive lead screw is the distal end, the distal end that each supports the stick-up pole hangs the counter weight, the near-end that each supports the stick-up pole is as supporting the end, it links to each other with control motor I's pivot through the drop wire to support stick-up pole I left side and the near-end that supports the stick-up pole I right side, it links to each other with control motor II's pivot through the drop wire to support stick-up pole II left side and the near-end that supports the stick-up pole III right side, it links to each other with control motor III's pivot through the drop wire to support stick-up pole III right side near-end, two support stick-up poles in each group stick-up or fall down under control motor's drive, unload drive lead screw in proper order.

Furthermore, two deep groove ball bearings are installed at the near end of each supporting warping rod, and two ends of the lead screw are arranged on the two deep groove ball bearings and rotate tangentially with the two deep groove ball bearings.

Furthermore, each control motor is matched with an infrared sensing device, the position of a trigger point of the infrared sensing device corresponds to the front of each group of the two supporting tilting rods respectively, when the synchronous triangular frame moves to the position of the trigger point of the infrared sensing device, the infrared sensing device controls the start, stop and positive and negative rotation of the motor, and the two supporting tilting rods in each group are driven by the control motor to unload the driving screw rod in sequence.

Furthermore, the synchronous triangular frame unloading device comprises a ground guide rail and a synchronous triangular frame supporting frame, wherein the ground guide rail is laid on the ground and is positioned between the truss base I and the truss base II; the synchronous triangular frame support frame comprises an adapter plate, a profile supporting rod and an embracing seat, wherein the adapter plate is fixedly connected with a guide rail sliding block on a ground guide rail, the profile supporting rod is supported on the adapter plate, and the embracing seat is fixed on the profile supporting rod and fixedly connected with the synchronous triangular frame.

Furthermore, the system for unfolding and unloading the ultra-long parabolic cylinder antenna further comprises a simulation wall, wherein the simulation wall is fixedly connected with the antenna driving support mechanism and used as an antenna fixing boundary.

In a second aspect, a method for unfolding and unloading an ultra-long parabolic cylinder antenna comprises the following steps:

the first synchronous triangular frame I is supported by a synchronous triangular frame supporting frame I and is driven by a driving lead screw (I/II/III) to move forwards along a ground guide rail; before the synchronous triangular frame I is not moved to the lead screw support frame, the right near end of the support tilting rod (I/II/III) tilts, the left near end of the support tilting rod (I/II/III) collapses, and the lead screw (I/II/III) is driven to always keep an initial unloading state; the reflector and the feed source are unfolded simultaneously under the driving of the synchronous triangular frame I, and at the moment, transverse sliding rails in a reflector unloading system and a feed source unloading system start to move towards the unfolding direction of the antenna;

when the synchronous triangular frame I moves to the position of the trigger point of the infrared sensing device in the left front of the support tilting rod (I/II/III) of the screw support frame (I/II), the infrared sensing device controls the motor to start, the left near end of the support tilting rod (I/II/III) tilts, the right near end of the support tilting rod (I/II/III) collapses, the synchronous triangular frame I continues to move, when the synchronous triangular frame I moves to the position of the trigger point of the infrared sensing device in the right front of the support tilting rod (I/II/III) of the screw support frame (I/II), the infrared sensing device controls the motor to start again, the left near end of the support tilting rod (I/II/III) collapses, and the right near end of the support tilting rod (I/II/III) tilts; when the folding rod between the synchronous triangular frame I and the synchronous triangular frame II is unfolded and straightened, the second synchronous triangular frame II is supported by the synchronous triangular frame supporting frame II and is driven by a driving lead screw (I/II/III) to move along a ground guide rail, the unloading processes of the reflector unloading system, the feed source unloading system and the driving lead screw (I/II/III) are the same as above, when the last synchronous triangular frame is unfolded in place, the reflector and the feed source are unfolded in place simultaneously, and the antenna unfolding is completed.

The system and the method for unfolding and unloading the ultra-long parabolic cylinder antenna have the following beneficial effects:

(1) the unfolding unloading system for the ultra-long parabolic cylinder antenna, provided by the invention, has the advantages that the number of lifting points of the unloading system is small, the structure is simple, the cost is low, the unloading efficiency is high, the unloading system can be repeatedly used, the expandability in the length direction is realized, and the motion of unloading devices among all components is coordinated and does not interfere with each other;

(2) according to the super-long parabolic cylinder antenna unloading system, the problem of interference of the unloading transverse rails in the folding state and the unfolding process of the reflector assembly is effectively solved by the two-dimensional plane type unloading sliding rail design of the multilayer layered structure reflector and the staggered arrangement mode of the transverse guide rails;

(3) according to the overlong parabolic cylinder antenna unloading system, due to the design of the antenna driving support mechanism unloading system, interference with a product is avoided under the condition that a driving lead screw and a synchronous triangular frame are completely unloaded, and the full automation of the support mechanism unloading system is realized due to the design of a control motor;

(4) according to the overlong parabolic cylinder antenna unloading system, due to the design of the portal frame in the feed source unloading system, the circumferential rotation and the movement and the expansion in the length direction of each plate of the feed source in the expansion process are effectively coordinated.

Drawings

Fig. 1 is a schematic structural diagram of an ultra-long parabolic cylinder antenna according to the present invention.

Fig. 2 is an unloading schematic diagram of an ultra-long parabolic cylinder antenna unloading system according to the present invention in an antenna folded state.

Fig. 3 is an unloading schematic diagram of an ultra-long parabolic cylinder antenna unloading system according to the present invention in an antenna unfolding state.

Fig. 4 is an unloading diagram of the unloading system of the ultra-long parabolic cylinder antenna according to the present invention in the unfolded state of the reflector.

Fig. 5 is a schematic diagram of a two-dimensional planar unloading slide rail in an unloading system of an ultra-long parabolic dish antenna reflector according to the present invention.

Fig. 6 is a schematic diagram of a cross-rail layer in an unloading system for an ultra-long parabolic dish antenna reflector according to the present invention.

Fig. 7 is an unloading schematic diagram of an ultralong parabolic cylinder antenna unloading system in a feed source spreading state.

Fig. 8 is a schematic view of an antenna driving support mechanism unloading system in an ultra-long parabolic cylinder antenna unloading system according to the present invention.

Fig. 9 is an unloading schematic view of a screw support frame in the ultralong parabolic cylinder antenna unloading system of the present invention.

Fig. 10 is a schematic view of unloading a lead screw in an unloading system of an ultra-long parabolic cylinder antenna according to the present invention.

Detailed Description

The features and advantages of the present invention will become more apparent and appreciated from the following detailed description of the invention.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

According to a first aspect of the present invention, there is provided an unfolding unloading system for an ultra-long parabolic cylinder antenna, as shown in fig. 1, the parabolic cylinder antenna includes a plurality of antenna units, each antenna unit includes a parabolic cylinder mesh reflector, an antenna driving support mechanism and a feed source, the antenna driving support mechanism fixes the parabolic cylinder mesh reflector and the feed source, unfolds along a cylindrical bus direction, and provides a support for an integral antenna structure after unfolding; the deployment offload system includes a reflector offload system 1, a feed offload system 2, an antenna drive support mechanism offload system 3, and a simulated wall 4, as shown in fig. 2 and 3.

Reflector unloading system

The parabolic cylindrical mesh reflector in each antenna unit comprises: the foldable telescopic arms are arranged along the bus direction of the parabolic cylindrical net surface, the M-shaped trusses are installed at two ends of the foldable telescopic arms, and the foldable telescopic arms are driven by a motor to fold and extend in the baseline plane of the parabolic cylindrical net surface; the parabolic columnar net surface is installed by taking the M-shaped truss and the folding telescopic arm as supports, the extension and the contraction of the base line direction are realized under the drive of the M-shaped truss, and the extension and the contraction of the bus direction are realized under the drive of the folding telescopic arm.

The reflector unloading system 1 comprises: reflector offloading truss 11, reflector two-dimensional planar offloading skid 12 and reflector suspension assembly 13, as shown in fig. 4.

The reflector unloading truss 11 is composed of square units of different sizes, such as square units, which are composed of universal balls as the pole supports of the units and multifunctional bars at the intersections of the multifunctional bars as the point supports of the units, and the unit size can be selected according to the overall structure size.

The reflector two-dimensional planar unloading slide rail 12 comprises: hangers 121, long rails 122, and N sets of transverse rails 123, as shown in fig. 5, the number of N being specifically determined by the reflector structure. The hanger 121 is fixedly connected with the reflector unloading truss 11 through screws, the longitudinal guide rail 122 is fixedly connected with the hanger 121 through screws, and the transverse guide rail 123 is suspended on the longitudinal guide rail 122 through a pulley and can slide along the longitudinal guide rail 122.

The transverse guide 123 adopts a layered structure, as shown in fig. 6, and comprises from top to bottom: the net surface unloading device comprises a first layer of net surface transverse guide rail 1231, a second layer of M-shaped truss transverse guide rail 1232 and a third layer of folding telescopic arm transverse guide rail 1233, wherein the net surface transverse guide rail 1231 is used for unloading the parabolic columnar net surface, the M-shaped truss transverse guide rail 1232 is used for unloading the M-shaped truss, and the folding telescopic arm transverse guide rail 1233 is used for unloading the folding telescopic arm. The transverse guide rail layout of each part of the reflector needs to meet the following requirements: when the transverse guide rails of each part of the reflector are in a folded state, the transverse guide rails of each part of the reflector are completely folded between the M-shaped trusses on the two sides, the suspension assembly is still in a drooping state, and the transverse guide rails of each part of the reflector are not interfered with each other in the unfolding process; therefore, the reflector transverse guide rails 123 are designed in a layered structure, and the transverse guide rails of each layer are placed in a staggered mode in the unfolding-folding direction, so that the folding size of the transverse guide rails along the bus direction of the reflector is minimized, and all parts of the reflector are unfolded in a staggered mode, and the requirements are met.

The movement tracks of the parabolic cylindrical net surface and the M-shaped truss are two-dimensional movement, and a suspension mode of a suspension wire, a spring and a pulley can be adopted, so that the suspension mode can finish unloading in a two-dimensional plane; the movement track of the folding telescopic arm is three-dimensional movement, a hanging mode of balance weight, pulley and suspension wire can be adopted, and unloading in the height direction can be increased by the balance weight and the pulley compared with a hanging mode of suspension wire, spring and pulley.

Correspondingly, the reflector suspension assembly 13 comprises a net surface suspension assembly, an M-shaped truss suspension assembly and a folding telescopic arm suspension assembly; the net surface suspension assembly comprises a suspension wire, a spring and a pulley, the pulley is matched with the net surface transverse guide rail 1231, and a parabolic cylindrical net surface is suspended below the pulley through the suspension wire and the spring, namely the parabolic cylindrical net surface is suspended on the net surface transverse guide rail 1231 through the suspension wire, the spring and the pulley;

the M-shaped truss suspension assembly comprises suspension wires, springs and a pulley, the pulley is matched with the M-shaped truss transverse guide rail 1232, and the M-shaped truss is suspended below the pulley through the suspension wires and the springs, namely the M-shaped truss is suspended on the M-shaped truss transverse guide rail 1232 through the suspension wires, the springs and the pulley;

folding flexible arm suspension subassembly includes counter weight, two sets of pulleys and hangs the silk, and two sets of pulleys hang in folding flexible arm transverse guide 1233 both ends, hangs the counter weight through hanging the silk under a set of pulley, hangs folding flexible arm through hanging the silk under another set of pulley, and folding flexible arm hangs on folding flexible arm transverse guide 1233 through counter weight + pulley + hanging the silk promptly.

(II) feed source unloading system

The feed source of the antenna comprises a plurality of sub-boards, a plurality of feed source folding joints are arranged among the sub-boards, and when the feed source extends or contracts, the feed source is unfolded or contracted and stacked at the feed source folding joints according to a W shape or an inverted W shape.

The feed offload system 2 includes: a feed unloading truss 21, a feed two-dimensional plane type unloading sliding rail 22 and a feed hanging component 23, as shown in fig. 7.

The feed source unloading truss 21 is composed of square units of different sizes, such as square units, each square unit is composed of a universal ball and a multifunctional rod piece, the multifunctional rod piece is used as a rod support of the unit, the universal ball is located at the intersection point of the multifunctional rod piece and is used as a point support of the unit, and the unit size can be selected according to the overall structure size.

Similar to the reflector two-dimensional planar offloading slide 12, the feed two-dimensional planar offloading slide 22 comprises: the feed source comprises a hanger, a long guide rail and M groups of transverse guide rails, wherein the number of the M is specifically determined by the feed source structure. The hanging bracket is fixedly connected with the feed source unloading truss 21 through screws, the longitudinal guide rail is fixedly connected with the hanging bracket through screws, and the transverse guide rail is suspended on the longitudinal guide rail through a pulley and can slide along the longitudinal guide rail.

The feed suspension assembly 23 includes: portal frame, counter weight, pulley and hanging wire, the pulley hangs under transverse guide, and pulley one side hangs the counter weight through the hanging wire, and the opposite side hangs the portal frame through the hanging wire, and the portal frame hangs on transverse guide through counter weight + pulley + hanging wire promptly, and the portal frame is connected with the feed, implements the uninstallation to the feed.

Specifically, the portal frame includes: the feed daughter board comprises a left cantilever, a left connecting shaft, a right cantilever, a right connecting shaft and a cross beam, wherein the left connecting shaft is installed at the lower end of the left cantilever, the right connecting shaft is installed at the lower end of the right cantilever, the upper ends of the left cantilever and the right cantilever are installed on the left side and the right side of the cross beam and are fixedly connected through screws, and the left connecting shaft and the right connecting shaft are hinged with the feed daughter board at the mass centers of the two sides of the feed daughter board. Preferably, the inner edge of the portal frame is close to the outer edge of the feed source sub-plate, so that the feed source is better stabilized in a folded state.

The unfolding process of the feed source comprises circumferential rotation and two-dimensional plane linear motion, and the unloading of the feed source in the unfolding and folding processes can be met by the combined suspension mode of circumferential rotation of the portal frame and linear motion of the pulley and the balance weight.

(III) unloading system of antenna driving supporting mechanism

The antenna driving support mechanism includes: the synchronous triangular frames (I/II/III/IV) are connected through supporting rods fixed between corresponding vertexes and are unfolded or folded under the driving of the rotation of the driving screw rod (I/II/III), and the unfolded triangular prism structure is formed. As shown in fig. 8, the driving screw and the synchronous triangular frame select the unloading mode of the bottom support.

The drive support mechanism unloading system 3 includes: screw unloading 31 and synchronized triangle unloading 32.

The screw unloading 31 in the drive support mechanism unloading system 3 includes: three motors (I/II/III) 311, a lead screw support frame I312 and a lead screw support frame II 313.

In order to prevent the synchronous triangular frame from interfering with the screw support frame when the synchronous triangular frame extends and moves on the screw, the screw support frame is designed into a double-support warping rod structure, and the interference problem in the unfolding process is solved by adopting a mode of alternately unloading left and right support warping rods.

Specifically, as shown in fig. 9, the lead screw support frame i 312 includes: the truss support frame comprises a truss base I3121, a support warp rod I left 3122, a support warp rod I right 3123 and 2 counter weights 3124; the screw support frame ii 313 includes: a truss base II 3131, a supporting raising rod II left 3132, a supporting raising rod II right 3133, a supporting raising rod III left 3134, a supporting raising rod III right 3135 and 4 balance weights 3124; the left support warping rod I3122 and the right support warping rod I3123 are in a group and are hinged on the truss base I3121, the left support warping rod II 3132 and the right support warping rod II 3133 are in a group, the left support warping rod III 3134 and the right support warping rod III 3135 are in a group and are respectively hinged on different heights of the truss base II 3131; the end, close to the driving screw, of each support tilting rod is a near end, the end, far away from the driving screw, of each support tilting rod is a far end, a balance weight is hung at the far end of each support tilting rod, the near end of each support tilting rod serves as a support end, the near ends of the support tilting rods I, left 3122 and the support tilting rods I, right 3123 are connected with a rotating shaft of the control motor I through a suspension wire, the near ends of the support tilting rods II, left 3132 and the support tilting rods II, right 3133 are connected with a rotating shaft of the control motor II through a suspension wire, the near ends of the support tilting rods III, left 3134 and the support tilting rods III, right 3135 are connected with a rotating shaft of the control motor III through a suspension wire, the two support tilting rods in each group tilt or collapse under the driving of the control motor, and the driving screw is unloaded in sequence.

As shown in fig. 10, two deep groove ball bearings are mounted at the proximal end of each support raising rod, and two ends of the lead screw are arranged on the two deep groove ball bearings to rotate tangentially with the two deep groove ball bearings, so that the friction force in the rotation of the lead screw is reduced.

Before the control motor starts, the supporting warping rod right near end suspension wire is in a loose state, the supporting warping rod right near end tilts upwards under the effect of the supporting warping rod right far end balance weight to finish unloading of the screw rod, meanwhile, the supporting warping rod left near end suspension wire is in a tensioning state under the effect of the control motor, and the supporting warping rod left near end collapses to prevent unloading of the screw rod. The motor is controlled to be started, the suspension wire at the left near end of the support warping rod is loosened, the screw rod is unloaded at the left end of the support warping rod, the suspension wire at the right near end of the support warping rod is tensioned, and the screw rod is not unloaded when the right near end of the support warping rod collapses; when the control motor rotates reversely, the suspension wires at the right near end of the support warping rod are loosened, the suspension wires at the left near end of the support warping rod are tightened, and the screw rods are sequentially and alternately unloaded. When the left supporting tilting rod or the right supporting tilting rod is in a collapsed state, the synchronous triangular frame does not interfere when moving forwards.

Each control motor is matched with an infrared sensing device, the position of a trigger point of each infrared sensing device corresponds to the front of each group of two supporting warping rods respectively, when the synchronous triangular frame moves to the position of the trigger point of each infrared sensing device, the infrared sensing device controls the start-stop and positive and negative rotation of the motor, and the two supporting warping rods in each group are driven by the control motor to unload the driving screw rods in sequence.

As shown in fig. 8, the synchronized triangular frame unloading 32 in the drive support mechanism unloading system 3 includes: ground guide rail and synchronous triangular frame support frame (I/II/III/IV). The ground guide rail is laid on the ground and is positioned between the truss base I3121 and the truss base II 3131; the synchronous triangular frame support frame comprises: the adapter plate is fixedly connected with a guide rail sliding block on a ground guide rail, the adapter plate is supported with the section bar supporting rod, the section bar supporting rod is fixedly provided with an embracing seat, and the embracing seat is fixedly connected with a synchronous triangular frame. When the synchronous triangular frame is unfolded, the synchronous triangular frame supporting frames move forwards along the ground guide rail in sequence along with the stretching movement of the synchronous triangular frame, and when the synchronous triangular frame supporting frames are folded, the synchronous triangular frame supporting frames do not interfere with each other.

(IV) simulation wall

The simulation wall 4 is fixedly connected with the antenna driving supporting mechanism and used as an antenna fixing boundary.

According to a second aspect of the present invention, there is provided an unfolding and unloading method for an ultra-long parabolic cylinder antenna, comprising the following steps:

the first synchronous triangular frame I is supported by a synchronous triangular frame supporting frame I and is driven by a driving lead screw (I/II/III) to move forwards along a ground guide rail; before the synchronous triangular frame I is not moved to the lead screw support frame, the right near end of the support tilting rod (I/II/III) tilts, the left near end of the support tilting rod (I/II/III) collapses, and the lead screw (I/II/III) is driven to always keep an initial unloading state; the reflector and the feed source are unfolded simultaneously under the driving of the synchronous triangular frame I, and at the moment, transverse sliding rails in the reflector unloading system 1 and the feed source unloading system 2 start to move towards the unfolding direction of the antenna;

when the synchronous triangular frame I moves to the position of the trigger point of the infrared sensing device in the left front of the support tilting rod (I/II/III) of the screw support frame (I/II), the infrared sensing device controls the motor to start, the left near end of the support tilting rod (I/II/III) tilts, the right near end of the support tilting rod (I/II/III) collapses, the synchronous triangular frame I continues to move, when the synchronous triangular frame I moves to the position of the trigger point of the infrared sensing device in the right front of the support tilting rod (I/II/III) of the screw support frame (I/II), the infrared sensing device controls the motor to start again, the left near end of the support tilting rod (I/II/III) collapses, and the right near end of the support tilting rod (I/II/III) tilts; when the folding rods between the synchronous triangular frames are unfolded and straightened, the synchronous triangular frames II are supported by the synchronous triangular frame supporting frames II and are driven by the driving lead screws (I/II/III) to move along the ground guide rails, the unloading processes of the reflector unloading system 1, the feed source unloading system 2 and the driving lead screws (I/II/III) are the same as above, when the last synchronous triangular frame IV is unfolded in place, the reflector and the feed source are unfolded in place simultaneously, and the antenna is unfolded and completed. The number of the synchronous triangular frames is determined according to the structure of the parabolic cylinder antenna.

The invention has been described in detail with reference to specific embodiments and illustrative examples, but the description is not intended to be construed in a limiting sense. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and its embodiments without departing from the spirit and scope of the present invention, which fall within the scope of the present invention. The scope of the invention is defined by the appended claims.

Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.