High-shrinkage-ratio antenna array erecting and retracting device

Abstract

The application relates to a high-shrinkage-ratio antenna array erecting and retracting device and belongs to the technical field of radar antenna manufacturing. The device comprises telescopic arms and a transmission system, the two telescopic arms are connected into an integrated body through the transmission system, the telescopic arms are composed of a first-section arm pipe to a fifth-section arm pipe, locking oil cylinders, sliding rails, sliding blocks, an unfolding sprocket set and a retracting sprocket set, a plurality of sliding blocks are arranged on the sliding rails which are correspondingly hung and arranged at the lower parts of the arm pipes, the right side of the telescopic arms is provided with the unfolding sprocket set, and the left side is provided with the retracting sprocket set, the unfolding sprocket set is composed of a plurality of extension chains, an extension sprocket and a pin shaft, and the retracting sprocket set is composed of a plurality of retraction chains, a retraction sprocket and a pin shaft; the first-section arm pipe is provided with the locking oil cylinders at the left end; the transmission system is composed of a hydraulic motor, a plurality of converters, a transmission shaft and two lead screws; the hydraulic motor is fixed at the middle position of the two telescopic arms, and the driving force of the hydraulic motor is transmitted to the lead screws through the transmission shaft and the converters; the device is convenient, safe, stable, efficient, low in manufacturing cost and low in failure rate.

Description

Technical Field

[0001] This invention relates to a high-contraction-ratio antenna array erection and dismantling device, belonging to the field of radar antenna manufacturing technology. Background Technology

[0002] Radar antenna arrays installed on towers must be large in area and height when deployed, and also quick, compact, and easy to operate when dismantled and transported. This makes the design and development of the deployment and dismantling device crucial. Therefore, how to overcome this contradiction and how to continuously optimize the design, development, and provision of deployment and dismantling devices that meet the high standards of modern radar have become the driving force and goal of researchers in this field. Existing deployment and dismantling mechanisms are generally separate, meaning that deployment and dismantling are completed through two separate systems. This results in complex structures, cumbersome operations, high material consumption, and increased risk of failure, making it difficult to adapt to the high standards of modern radar. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of the prior art by providing a high-retraction-ratio antenna array erection and dismantling device that is simple in structure, easy to operate, requires few materials, is safe, stable and efficient in use, has low manufacturing cost and failure rate, and is compatible with the high standards of modern radar.

[0004] The technical solution is as follows:

[0005] A high-retraction-ratio antenna array erection and dismantling device mainly consists of telescopic arms and a transmission system. Its key feature is that there are two telescopic arms connected as a single unit via the transmission system. Each telescopic arm comprises a first to fifth arm section, a locking cylinder, a guide rail, a slider, an deployment sprocket assembly, and a retraction sprocket assembly. Guide rails are suspended from the lower parts of each of the first to fifth arm sections, and multiple sliders are mounted on the guide rails. The first to fifth arm sections are movably connected to the guide rails via the sliders. An deployment sprocket assembly is located on the right side of the telescopic arm, and a retraction sprocket assembly is located on the left side of the telescopic arm. The telescopic boom has a retraction sprocket assembly, which consists of multiple extending chains, multiple extending sprockets, and multiple pins. The retraction sprocket assembly consists of multiple retracting chains, multiple retracting sprockets, and multiple pins. A locking cylinder is installed at the left end of the first boom section to lock the telescopic boom in the retracted state. The transmission system consists of a hydraulic motor, multiple converters, multiple drive shafts, and two lead screws. The lead screws are installed inside the first boom section of the telescopic boom. The hydraulic motor is fixed to the middle position of the two telescopic booms by two mounting seats, and the driving force of the hydraulic motor is transmitted to the lead screws through the drive shafts and converters.

[0006] The telescopic arm is rectangular in shape, and consists of a first arm tube, a second arm tube, a third arm tube, a fourth arm tube, and a fifth arm tube from the inside out.

[0007] The unfolding sprocket assembly is located inside the telescopic arm on the right side. There are three extendable sprockets, which are fixed to the right head of the second, third, and fourth arm sections by pins.

[0008] The retraction sprocket assembly is located inside the telescopic arm on the left side. There are three retraction sprockets, which are fixed to the left heads of the second, third, and fourth arm sections by pins.

[0009] The aforementioned unfolding sprocket assembly has three extending chains. One end of the extending chain is fixed to the right tail of the first arm tube, passes through the extending sprocket at the head of the second arm tube, and the other end is fixed to the right tail of the third arm tube. Another extending chain has one end fixed to the right tail of the second arm tube, passes through the extending sprocket at the head of the third arm tube, and the other end is fixed to the right tail of the fourth arm tube. A third extending chain has one end fixed to the right tail of the third arm tube, passes through the extending sprocket at the head of the fourth arm tube, and the other end is fixed to the right tail of the fifth arm tube.

[0010] The retraction chain of the retraction sprocket assembly has three chains. One end of the retraction chain is fixed to the left head of the first arm tube, passes through the retraction sprocket at the tail of the second arm tube, and the other end is fixed to the left tail of the third arm tube. Another retraction chain is fixed to the left head of the second arm tube, passes around the retraction sprocket at the tail of the third arm tube, and the other end is fixed to the left tail of the fourth arm tube. A third retraction chain is fixed to the left head of the third arm tube, passes through the retraction sprocket at the tail of the fourth arm tube, and the other end is fixed to the left tail of the fifth arm tube.

[0011] One end of the lead screw is connected to the drive shaft of the hydraulic motor via a converter, and the other end is fixed inside the first section of the boom tube.

[0012] The hydraulic motor is a dual-output hydraulic motor, with the same output torque and speed on both sides, and the same power transmission path.

[0013] The telescopic arm is installed and connected to the column frame of the antenna unit. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention when unfolded;

[0015] Figure 2 This is a schematic diagram of the overall structure of the present invention during retraction;

[0016] Figure 3 This is a schematic diagram of the main structure of the telescopic arm;

[0017] Figure 4 This is a top view of the telescopic boom.

[0018] Figure 5 for Figure 4 A schematic diagram of the enlarged structure in direction A;

[0019] Figure 6 This is a schematic diagram of the transmission system.

[0020] Figure 7 To illustrate the connection diagram of the sprocket assembly;

[0021] Figure 8 A schematic diagram showing the actual assembly of the sprocket assembly and the telescopic arm;

[0022] Figure 9 A schematic diagram showing the connection of the sprocket assembly for retraction;

[0023] Figure 10 A schematic diagram of the actual assembly of the retractable sprocket assembly and the telescopic boom;

[0024] Figure 11 This is a schematic diagram of the main structure of the telescopic arm in its retracted and folded state.

[0025] Figure 12 A top view of the retractable and folded telescopic arm.

[0026] Figure 13 This is a schematic diagram of the isometric structure of the present invention.

[0027] In the diagram: 1. Telescopic boom, 2. Transmission system, 3 rows of frame;

[0028] 100 First boom tube, 101 Second boom tube, 102 Third boom tube, 103 Fourth boom tube, 104 Fifth boom tube, 105 Locking cylinder, 106 Slide rail, 107 Slider, 108 Deploy sprocket assembly, 109 Retract sprocket assembly.

[0029] 1081 extends the sprocket, 1082 extends the chain;

[0030] 1091 Retract sprocket, 1092 Retract chain;

[0031] 200 Hydraulic motor, 201 Drive shaft, 202 Converter, 203 Lead screw, 204 Lead screw nut, 205 Mounting base. Detailed Implementation

[0032] The implementation method of the high-contraction-ratio antenna array erection and dismantling device will be described in further detail below with reference to the accompanying drawings:

[0033] (See) Figures 1-13A high-retraction-ratio antenna array erection and dismantling device mainly consists of a telescopic arm 1 and a transmission system 2. There are two telescopic arms 1 connected as one unit via the transmission system 2. Each telescopic arm 1 comprises a first arm tube 100 to a fifth arm tube 104, a locking cylinder 105, a guide rail 106, a slider 107, an unfolding sprocket assembly 108, and a retraction sprocket assembly 109. The lower parts of each of the first to fifth arm tubes 104 are respectively suspended from the guide rail 106. Multiple sliders 107 are provided on the guide rail 106. The first to fifth arm tubes 104 are movably connected to the guide rail 106 via the sliders 107. The unfolding sprocket assembly 108 is located on the right side of the telescopic arm 1, and the retraction sprocket assembly 109 is located on the left side of the telescopic arm 1. 09. The unfolding sprocket assembly 108 consists of multiple extending sprockets 1081, multiple extending chains 1082, and multiple pins. The retracting sprocket assembly 109 consists of multiple retracting sprockets 1091, multiple retracting chains 1092, and multiple pins. A locking cylinder 105 is installed at the left end of the first arm tube 100 to lock the telescopic arm 1 in the retracted state. The transmission system 2 consists of a hydraulic motor 200, multiple drive shafts 201, multiple converters 202, and two lead screws 203. The lead screws 203 are installed inside the first arm tube 100 of the telescopic arm 1. The hydraulic motor 200 is fixed to the middle position of the two telescopic arms 1 by two mounting seats 205. The driving force of the hydraulic motor 200 is transmitted to the lead screws 203 through the drive shafts 201 and converters 202.

[0034] The telescopic arm 1 is rectangular in shape, and from the inside out, the telescopic arm 1 consists of a first arm tube 100, a second arm tube 101, a third arm tube 102, a fourth arm tube 103, and a fifth arm tube 104.

[0035] (See) Figure 3 , Figure 4 , Figure 7 and Figure 8 The unfolding sprocket assembly 108 is located inside the telescopic arm 1 on the right side. There are three extending sprockets 1081, which are fixed to the right head of the second arm tube 101, the third arm tube 102 and the fourth arm tube 103 respectively by pins.

[0036] (See) Figure 3 , Figure 4 , Figure 9 and Figure 10 The retraction sprocket assembly 109 is located inside the telescopic arm 1 on the left side. There are three retraction sprockets 1091, which are fixed to the left head of the second arm tube 101, the third arm tube 102 and the fourth arm tube 103 respectively by pins.

[0037] The transmission system 2 connects the two telescopic arms 1. The hydraulic motor 200 in the transmission system 2 is fixed in the middle position of the two telescopic arms 1 through two mounting seats 205. The driving force of the hydraulic motor 200 is transmitted to two lead screws 203 through six transmission shafts 201 and six converters 202 respectively.

[0038] The telescopic arm 1 consists of five arm tubes, from the inside out: the first arm tube 100, the second arm tube 101, the third arm tube 102, the fourth arm tube 103, and the fifth arm tube 104. Five guide rails 106 are suspended below the first to fifth arm tubes 100 and 104 of the telescopic arm 1. Twelve sliders 107 are respectively installed on the guide rails 106. The five arm tubes of the telescopic arm 1 are supported by multiple sliders 107 to reduce the friction between the first to fifth arm tubes 100 and 104. When the telescopic arm 1 is retracted, the entire folded telescopic arm 1 is locked by a locking cylinder 105 to prevent the telescopic arm 1 from extending beyond its limit during transportation and to ensure rapid and safe transfer.

[0039] The unfolding sprocket assembly 108 is arranged inside the right side of the telescopic arm 1, and consists of three extending sprockets 1081 and three extending chains 1082; the three extending sprockets 1081 are respectively fixed to the right head of the second arm tube 101, the third arm tube 102 and the fourth arm tube 103 by pins.

[0040] Three extending chains 1082: one end of one extending chain 1082 is fixed to the right tail of the first arm tube 100, passes through the extending sprocket 1081 at the head of the second arm tube 101, and the other end is fixed to the right tail of the third arm tube 102; another extending chain 1082 is fixed to the right tail of the second arm tube 101, passes through the extending sprocket 1081 at the head of the third arm tube 102, and the other end is fixed to the right tail of the fourth arm tube 103; yet another extending chain 1082 is fixed to the right tail of the third arm tube 102, passes through the extending sprocket 1081 at the head of the fourth arm tube 103, and the other end is fixed to the right tail of the fifth arm tube 104.

[0041] The retraction sprocket assembly 109 is located inside the telescopic boom 1 on the left side and consists of three retraction sprockets 1091 and three retraction chains 1092. The three retraction sprockets 1091 are respectively fixed to the left tail ends of the second boom section 101, the third boom section 102, and the fourth boom section 103 via pins. The three retraction chains 1092 are arranged as follows: one end of one retraction chain is fixed to the left head end of the first boom section 100, and it passes through the retraction sprocket 1091 at the tail end of the second boom section 101; the other end... One end is fixed to the left tail of the third arm tube 102; another retractable chain 1092 is fixed to the left head of the second arm tube 101, passes through the retractable sprocket 1091 at the tail of the third arm tube 102, and the other end is fixed to the left tail of the fourth arm tube 103; yet another retractable chain 1092 is fixed to the left head of the third arm tube 102, passes through the retractable sprocket 1091 at the tail of the fourth arm tube 103, and the other end is fixed to the left tail of the fifth arm tube 104.

[0042] The deployment process of the high-contraction-ratio antenna array setup and dismantling device is as follows:

[0043] (See) Figures 1-6 The hydraulic motor 200 of the transmission system 2 rotates to generate driving force, which drives two transmission shafts 201 to work. One transmission shaft 201 drives three converters 202 connected to it to work, and the other transmission shaft 201 drives another three converters 202 connected to it to work. The driving force of the hydraulic motor 200 is transmitted to two lead screws 203 respectively. Each lead screw 203 is fixedly installed in the first section of the telescopic arm 1. The lead screw 203 rotates and works, pushing out the second section of the arm 101 through the lead screw nut 204. The lead screw nut 204 is fixedly installed in the second section of the arm 101. Then, through the three protruding sprockets 1081 and three protruding chains 1082 of the unfolding sprocket group 108, the third section of the arm 102, the fourth section of the arm 103, and the fifth section of the arm 104 are unfolded simultaneously. The two telescopic arms 1 are driven by a hydraulic motor 200 and the mechanical synchronous movement of the transmission system 2 to ensure that the two telescopic arms 1 unfold in a coordinated and synchronous manner.

[0044] The dismantling process of the high-contraction-ratio antenna array deployment and dismantling device is the reverse of the deployment process described above:

[0045] (See) Figures 6-10The hydraulic motor 200 of the transmission system 2 rotates to generate driving force, which drives two transmission shafts 201 to work. One transmission shaft 201 drives three converters 202 connected to it to work, and the other transmission shaft 201 drives another three converters 202 connected to it to work. The driving force of the hydraulic motor 200 is transmitted to two lead screws 203 respectively. Each lead screw 203 is fixed in the first section of the telescopic arm 1. The lead screw 203 rotates and works, and retracts the second section of the arm 101 through the lead screw nut 204. The lead screw nut 204 is fixed in the second section of the arm 101. Then, through the three retraction sprockets 1091 and three retraction chains 1092 of the retraction sprocket group 109, the third section of the arm 102, the fourth section of the arm 103, and the fifth section of the arm 104 are retracted simultaneously. The two telescopic arms 1 are driven by a hydraulic motor 200 and mechanically synchronized by the transmission system 2 to ensure that the two telescopic arms 1 are retracted in a coordinated and synchronous manner.

[0046] (See) Figure 1 and Figure 2 The present invention provides a high-contraction-ratio antenna array deployment and retraction device, comprising two telescopic arms 1, a transmission system 2, two sets of deployment sprocket groups 108 and two sets of retraction sprocket groups 109; each of the two telescopic arms 1 is respectively equipped with a set of deployment sprocket group 108 and a set of retraction sprocket group 109.

[0047] (See) Figure 3 , Figure 4 , Figure 5 and Figure 6 The transmission system 2 consists of a hydraulic motor 200, a mounting base 205, a drive shaft 201, a converter 202, a lead screw 203, and a coupling. The hydraulic motor 200 is a dual-output hydraulic motor, with the same output torque and speed on both sides. The power transmission path is as follows:

[0048] Hydraulic motor 200 → Drive shaft 201 → Converter 202 → Lead screw 203 → Lead screw nut 204.

[0049] The left and right transmissions of transmission system 2 are symmetrical, with the same torsional stiffness, and the movement speed and displacement of the lead screw and nut 204 are the same.

[0050] Advantages of mechanical synchronization: reliable transmission, long service life, and precise synchronization.

[0051] (See) Figure 3 , Figure 4 , Figure 7 , Figure 8 , Figure 9 and Figure 10The lead screw 203 is a T-shaped lead screw, with two adjacent arm tubes, the rear arm tube fitting into the front arm tube; the transmission device of the telescopic arm 1 is a chain drive, driven by the lead screw 203, and the four arm sections extend and retract synchronously; the lead screw 203 can generate self-locking to ensure safety during operation.

[0052] As a transmission device for realizing the synchronous extension and retraction of each section of the telescopic boom 1, it mainly consists of two sets of chain drives: a forward-facing unfolding sprocket group 108 and a lateral retraction sprocket group 109. Each set of the unfolding sprocket group 108 consists of an extension chain 1082 and an extension sprocket 1081 corresponding to the third section of the boom tube 102, an extension chain 1082 and an extension sprocket 1081 corresponding to the fourth section of the boom tube 103, and an extension chain 1082 and an extension sprocket 1081 corresponding to the fifth section of the boom tube 104. The retraction sprocket group 109 consists of a retraction chain 1092 and a retraction sprocket 1091 corresponding to the third section of the boom tube 102, a retraction chain 1092 and a retraction sprocket 1091 corresponding to the fourth section of the boom tube 103, and a retraction chain 1092 and a retraction sprocket 1091 corresponding to the fifth section of the boom tube 104.

[0053] The transmission principle of transmission system 2: The lead screw 203 and the lead screw nut 204 fixed on the second arm tube 101 form a linear motion pair, which can drive the transmission shaft 201 through the hydraulic motor 200 to realize the extension and retraction of the second arm tube 101 relative to the first arm tube 100. For two adjacent arm sections, the third arm tube 102 is the rear arm that fits into the front arm second arm tube 101, the fourth arm tube 103 fits into the third arm tube 102, and the fifth arm tube 104 fits into the fourth arm tube 103. Since both extension and retraction functions need to be taken into account, two sets of chains are set in the telescopic arm 1. The extension sprocket group 108 and the retraction sprocket group 109 are set between the arm tubes for chain transmission. The front and rear ends of the extension chain 1082 or retraction chain 1092 are fixed to the arm tubes, and the extension sprocket 1081 or retraction sprocket 1091 is fixed on the middle arm tube, and so on.

[0054] (See) Figure 11 , Figure 12 and Figure 13 The telescopic arm 1 is greatly reduced in size after retraction and is locked in place by the locking cylinder 105, making it easy and quick to assemble and disassemble.

[0055] The device of this invention has been installed on the radar antenna array and operated more than a hundred times over a year. It works stably and reliably without any malfunctions. The setup and dismantling are smooth and fast, fully achieving the expected results of the design and manufacturing.

[0056] The above description is merely a preferred embodiment of the present invention. The above examples do not limit the substantive content of the present invention in any way. Any simple modifications or variations made by those skilled in the art to the above specific embodiments based on the technical essence of the present invention after reading this specification, as well as equivalent embodiments that may be changed or modified using the disclosed technical content, shall still fall within the scope of the technical solution of the present invention and shall not depart from the essence and scope of the present invention.

Claims

1. A high-contraction-ratio antenna array erection and dismantling device, mainly composed of a telescopic arm (1) and a transmission system (2). The telescopic arm (1) is composed of a first arm tube (100) to a fifth arm tube (104), a locking cylinder (105), a guide rail (106), a slider (107), an unfolding sprocket assembly (108), and a dismantling sprocket assembly (109). The lower part of the first arm tube (100) to the fifth arm tube (104) is respectively suspended and installed with a guide rail (106). Multiple sliders (107) are provided on the guide rail (106). The first arm tube (100) to the fifth arm tube (104) are movably connected to the guide rail (106) through the sliders (107). Its features are: There are two telescopic arms (1), which are connected as one unit by a transmission system (2). The transmission system (2) consists of a hydraulic motor (200), multiple transmission shafts (201), multiple converters (202), and two lead screws (203). The left and right transmissions of the transmission system (2) are symmetrical, with the same torsional stiffness, and the movement speed and displacement of the lead screw nut (204) are the same. An unfolding sprocket assembly (108) is provided on the right side of the telescopic arm (1), and a retracting sprocket assembly (109) is provided on the left side of the telescopic arm (1). The unfolding sprocket assembly (108) consists of multiple extending sprockets (1081), multiple extending chains (1082), and multiple pins. The retracting sprocket assembly... (109) is composed of multiple retractable sprockets (1091), multiple retractable chains (1092) and multiple pins; a locking cylinder (105) is installed at the left end of the first section of the arm tube (100) to lock the telescopic arm (1) in the retracted state; the lead screw (203) is installed in the first section of the arm tube (100) of the telescopic arm (1); the hydraulic motor (200) is fixed in the middle position of the two telescopic arms (1) through the mounting seat (205), and the driving force of the hydraulic motor (200) is transmitted to the lead screw (203) through the transmission shaft (201) and the converter (202); the two telescopic arms (1) are driven by a hydraulic motor (200) and the transmission system (2) moves mechanically synchronously.

2. The high-contraction-ratio antenna array erection and dismantling device according to claim 1, characterized in that: The aforementioned unfolding sprocket assembly (108) has three extending sprockets (1081), which are fixed to the right head of the second arm tube (101), the third arm tube (102), and the fourth arm tube (103) respectively by pins.

3. The high-contraction-ratio antenna array erection and dismantling device according to claim 1, characterized in that: The retraction sprocket assembly (109) has three retraction sprockets (1091), which are fixed to the left head of the second arm tube (101), the third arm tube (102) and the fourth arm tube (103) respectively by pins.

4. The high-contraction-ratio antenna array erection and dismantling device according to claim 1, characterized in that: The unfolding sprocket assembly (108) has three extending chains (1082). One end of one extending chain (1082) is fixed to the right tail of the first arm tube (100), passes through the extending sprocket (1081) at the head of the second arm tube (101), and the other end is fixed to the right tail of the third arm tube (102). One end of another extending chain (1082) is fixed to the right tail of the second arm tube (101), passes through the extending sprocket (1081) at the head of the third arm tube (102), and the other end is fixed to the right tail of the fourth arm tube (103). Another extending chain (1082) is fixed to the right tail of the third arm tube (102), passes through the extending sprocket (1081) at the head of the fourth arm tube (103), and the other end is fixed to the right tail of the fifth arm tube (104).

5. The high-contraction-ratio antenna array erection and dismantling device according to claim 1, characterized in that: The retraction chain of the retraction sprocket assembly (109) has three retraction chains. One retraction chain (1092) is fixed at one end to the left head of the first arm tube (100), passes through the retraction sprocket (1091) at the tail of the second arm tube (101), and the other end is fixed to the left tail of the third arm tube (102). Another retraction chain (1092) is fixed at the left head of the second arm tube (101), passes through the retraction sprocket (1091) at the tail of the third arm tube (102), and the other end is fixed to the left tail of the fourth arm tube (103). Another retraction chain (1092) is fixed at one end to the left head of the third arm tube (102), passes through the retraction sprocket (1091) at the tail of the fourth arm tube (103), and the other end is fixed to the left tail of the fifth arm tube (104).

6. The high-contraction-ratio antenna array erection and dismantling device according to claim 1, characterized in that: One end of the lead screw (203) is connected to the drive shaft (201) of the hydraulic motor (200) via a converter (202), and the other end is fixedly installed inside the first arm tube (100).

7. The high-contraction-ratio antenna array erection and dismantling device according to claim 1, characterized in that: The hydraulic motor (200) is a dual-output hydraulic motor with the same output torque and speed on both sides and the same power transmission path.

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