Mechanism for converting linear motion into rotary motion

Abstract

The utility model discloses a mechanism for converting linear motion into rotary motion, which relates to the technical field of antenna polarization and comprises an antenna adapter and a test antenna, a connecting rod is transversely arranged in the middle of the test antenna, and the antenna adapter is mounted in the middle of the connecting rod and comprises an outer shell, a fixing plate, a pushing cylinder and an upper flange plate. A fixing plate is arranged on one side of the outer shell, a pushing air cylinder is installed at the other end of the fixing plate, a rack is fixedly connected to the output end of the pushing air cylinder, the rack is driven by the pushing air cylinder to reciprocate, the rack drives a gear meshed with the rack to rotate, and then the upper flange plate is driven to rotate. A connecting rod penetrating through the middle of the upper flange plate synchronously rotates along with the upper flange plate, linear motion of a rack driven by a pushing air cylinder is converted into rotation motion of a gear, a large antenna can be automatically controlled to rotate to achieve polarization, and the problem that the large antenna cannot be directly driven by a motor to rotate to achieve polarization is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of antenna polarization, specifically a mechanism for realizing linear motion conversion into rotary motion. BACKGROUND

[0002] Antenna polarization testing is a process for determining the polarization state of an antenna when transmitting and receiving signals. The polarization of an antenna is closely related to the quality of signal transmission, especially in wireless communication systems. Correct polarization matching can effectively improve signal quality and reduce interference. Antenna polarization testing can test whether an antenna is working according to design specifications, ensuring polarization matching between transmitting and receiving antennas to optimize signal transmission and understand the polarization direction of the antenna to adjust the antenna installation direction in practical applications for optimal signal reception.

[0003] For large antennas, and antennas with a self-weight of more than 50 kg, direct motor-driven rotation cannot achieve antenna polarization. Therefore, for large antenna projects, automatic control cannot meet testing requirements. Therefore, an automatic driving mechanism for large antenna rotation is urgently needed to solve the above problems. SUMMARY

[0004] To solve the above technical problems, a mechanism for realizing linear motion conversion into rotary motion is provided, which solves the problem that a motor cannot directly drive large antenna rotation to achieve antenna polarization.

[0005] To achieve the above purposes, the technical scheme adopted by the utility model is as follows:

[0006] A mechanism for realizing linear motion conversion into rotary motion, comprising an antenna adapter and a test antenna, wherein the middle part of the test antenna is transversely provided with a connecting rod, and the antenna adapter is installed in the middle part of the connecting rod.

[0007] The antenna adapter comprises an outer shell, a fixed plate, a push cylinder, and an upper flange plate. One side of the outer shell is provided with a fixed plate, one end of the fixed plate is fixedly connected with the outer shell through a connecting plate, the other end of the fixed plate is installed with a push cylinder, the output end of the push cylinder is fixedly connected with a rack, the push cylinder is in communication with an external air source, and the upper end of the outer shell is rotatably connected with an upper flange plate through a bearing.

[0008] Preferably, one side of the rack is slidably connected with the inner wall of the outer shell, the other side of the rack is engaged with a gear, and the upper end of the gear is fixedly connected with the upper flange plate.

[0009] Preferably, the middle part of the upper flange plate is provided with a connecting hole for the connecting rod to pass through, one side of the connecting hole is provided with a limiting hole, and the limiting hole is arc-shaped and arranged at the upper end of the upper flange plate.

[0010] Preferably, the inside of the limiting hole is provided with a limiting pin, the lower end of the limiting pin is fixedly connected with the outer shell body, and the limiting pin is used for limiting the upper flange plate.

[0011] Preferably, the lower end of the outer shell body is rotationally connected with a lower flange plate, the upper side of the lower flange plate is fixedly connected with a locking mounting block, the middle part of the locking mounting block is provided with a through hole for the connecting rod to pass through, and one end of the locking mounting block is provided with a locking bolt.

[0012] Preferably, the side of the outer shell body is provided with a mounting hole.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] The utility model discloses a push cylinder, upper flange plate and gear, drive rack reciprocating motion through push cylinder, drive rack drive the rotation of the gear that meshes with it, and then drive the rotation of upper flange plate, make the connecting rod that passes through the middle part of upper flange plate with upper flange plate synchronous rotation, the linear motion of drive rack that push cylinder drives is converted into the rotary motion of gear, make can automatically control the rotation of large antenna and realize polarization, solve the problem that large antenna can not realize polarization through the direct drive rotation of motor. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is the structural schematic diagram of the utility model;

[0016] Fig. 2 It is the structural schematic diagram of the antenna adapter in the utility model;

[0017] Fig. 3 It is the internal structure schematic diagram of the antenna adapter in the utility model.

[0018] Reference numerals in the drawing are:

[0019] 1, antenna adapter; 11, outer shell body; 111, mounting hole; 12, fixed plate; 13, push cylinder; 131, rack; 14, upper flange plate; 141, connecting hole; 142, limiting hole; 143, limiting pin; 15, gear; 16, locking mounting block; 161, locking bolt; 17, lower flange plate;

[0020] 2, test antenna; 21, connecting rod. DETAILED DESCRIPTION

[0021] The following description is used to disclose the utility model so that those skilled in the art can realize the utility model. The preferred embodiments in the following description are only as examples, and those skilled in the art can think of other obvious modifications.

[0022] As shown in Figs. 1-3 A mechanism for converting linear motion into rotary motion, comprising an antenna adapter 1 and a test antenna 2, the middle part of the test antenna 2 is transversely provided with a connecting rod 21, the antenna adapter 1 is installed in the middle part of the connecting rod 21, and the test antenna 2 is driven to rotate through the antenna adapter 1.

[0023] The antenna adapter 1 comprises an outer shell 11, a fixed plate 12, a push cylinder 13 and an upper flange plate 14, one side of the outer shell 11 is provided with a mounting hole 111, through which the antenna adapter 1 can be conveniently and quickly installed and fixed, one side of the outer shell 11 is provided with the fixed plate 12, one end of the fixed plate 12 is fixedly connected with the outer shell 11 through a connecting plate, the other end of the fixed plate 12 is provided with the push cylinder 13, the output end of the push cylinder 13 is fixedly connected with a rack 131, the push cylinder 13 is in communication with an external air source, the upper end of the outer shell 11 is rotatably connected with the upper flange plate 14 through a bearing, one side of the rack 131 is slidably connected with the inner wall of the outer shell 11, the other side of the rack 131 is engaged with a gear 15, the extension or contraction of the push cylinder 13 will drive the rack 131 to reciprocate along the inner wall of the outer shell 11, thereby driving the gear 15 to rotate, the upper end of the gear 15 is fixedly connected with the upper flange plate 14, the gear 15 will rotate synchronously with the upper flange plate 14, converting the linear motion of the rack 131 driven by the push cylinder 13 into the rotary motion of the gear 15, the middle part of the upper flange plate 14 is provided with a connecting hole 141 for the connecting rod 21 to pass through, the rotation of the upper flange plate 14 will drive the test antenna 2 to rotate to complete the antenna polarization, one side of the connecting hole 141 is provided with a limiting hole 142, the limiting hole 142 is arranged on the upper end of the upper flange plate 14 and is arc-shaped, a limiting pin 143 is arranged in the limiting hole 142, the lower end of the limiting pin 143 is fixedly connected with the outer shell 11, the limiting pin 143 is used for limiting the upper flange plate 14, the rotation of the upper flange plate 14 is limited by the limiting pin 143, and the upper flange plate 14 can only drive the test antenna 2 to rotate by 90°.

[0024] The lower end of the outer shell 11 is rotatably connected with a lower flange plate 17, the lower flange plate 17 is arranged in the same structure as the upper flange plate 14, the upper flange plate 14 is fixedly connected with a locking mounting block 16, the middle part of the locking mounting block 16 is provided with a through hole for the connecting rod 21 to pass through, the upper end of the locking mounting block 16 is designed in a detachable manner, one end of the locking mounting block 16 is provided with a locking bolt 161, the locking mounting block 16 is clamped and fixed to the connecting rod 21 by tightening the locking bolt 161 to make the upper ends of the locking mounting blocks 16 approach each other, avoiding the movement of the test antenna 2 during rotation.

[0025] The utility model discloses a principle is: the connecting rod 21 is in turn passed through upper flange plate 14, gear 15, locking mounting block 16 and lower flange plate 17, is fixed with the clamping of locking mounting block 16 to connecting rod 21 through the tightening locking bolt 161, installs the antenna adapter 1 in the middle part of connecting rod 21, needs to rotate when testing antenna 2, controls the extension of push cylinder 13 and drives rack 131 to move, and rack 131 drives the rotation of gear 15 meshed with it, and then drives the rotation of upper flange plate 14 and connecting rod 21, and the rotation angle of upper flange plate 14 is limited to limit pin 143, the linear motion of push cylinder 13 rack 131 is converted into the rotary motion of gear 15, so that can be automatically controlled to rotate and realize polarization to large -scale antenna.

[0026] The basic principle, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only the principles of the utility model. The utility model can have various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A mechanism for converting linear motion to rotational motion, characterized by: The utility model provides an antenna adapter (1) and test antenna (2), the middle part of test antenna (2) is transversely provided with connecting rod (21), and the antenna adapter (1) is installed in the middle part of connecting rod (21); The antenna adapter (1) comprises an outer housing (11), a fixed plate (12), a push air cylinder (13) and an upper flange plate (14), one side of the outer housing (11) is provided with the fixed plate (12), one end of the fixed plate (12) is fixedly connected with the outer housing (11) through a connecting plate, the other end of the fixed plate (12) is provided with the push air cylinder (13), the output end of the push air cylinder (13) is fixedly connected with a rack (131), the push air cylinder (13) is communicated with an external air source, and the upper end of the outer housing (11) is rotatably connected with the upper flange plate (14) through a bearing.

2. The mechanism for converting linear motion into rotational motion according to claim 1, wherein: One side of the rack (131) is slidably connected with the inner wall of the outer housing (11), and the other side of the rack (131) is engaged with a gear (15), and the upper end of the gear (15) is fixedly connected with the upper flange plate (14).

3. The mechanism for converting linear motion into rotational motion according to claim 1, wherein: The middle part of the upper flange plate (14) is provided with a connecting hole (141) for the connecting rod (21) to pass through, one side of the connecting hole (141) is provided with a limiting hole (142), and the limiting hole (142) is arranged at the upper end of the upper flange plate (14) and is arranged in an arc shape.

4. The mechanism for converting linear motion into rotational motion according to claim 3, wherein: The inside of the limiting hole (142) is provided with a limiting bolt (143), the lower end of the limiting bolt (143) is fixedly connected with the outer housing (11), and the limiting bolt (143) is used for limiting the upper flange plate (14).

5. The mechanism for converting linear motion to rotational motion according to claim 1, wherein: The lower end of the outer housing (11) is rotatably connected with a lower flange plate (17), the upper side of the lower flange plate (17) is fixedly connected with a locking mounting block (16), the middle part of the locking mounting block (16) is provided with a through hole for the connecting rod (21) to pass through, one end of the locking mounting block (16) is provided with a locking bolt (161), and the locking mounting block (16) is fixed to the connecting rod (21) through the locking bolt (161).

6. The mechanism for converting linear motion to rotational motion according to claim 1, wherein: One side of the outer housing (11) is provided with a mounting hole (111).

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