Antenna hand-cranking mechanism

Abstract

The utility model discloses an antenna hand-cranking mechanism comprising a rotary table which is provided with a hand-cranking handle rod. A hand wheel is arranged on the hand-cranking handle rod; a gear fixing seat is arranged on the rotary table; a second bevel gear is arranged on the gear fixing seat; the second bevel gear is connected with a moving assembly; one end of the hand-cranking handle rod is connected with one end of the first connecting shaft; the other end of the first connecting shaft is connected with a first bevel gear; a sliding groove is formed in one end of the second connecting shaft; compression springs are installed in the sliding grooves. The beneficial effects of the utility model are that the antenna can meet the requirements for the appearance and parameters of the antenna, and is convenient for a user to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of antenna hand-cranking mechanisms, in particular to an antenna hand-cranking mechanism. Background Art

[0002] The hand-crank mechanism is widely used in the antenna industry, and is mainly used to drive the pitch and azimuth movement of the antenna in a power-off state. Generally, when the power is on, the hand-crank mechanism is not directly connected to the pitch or azimuth movement mechanism of the antenna, but is stored separately. At this time, the pitch and azimuth movement of the antenna is driven by the motor; when the power is off, the motor can no longer provide power for the pitch or azimuth movement. At this time, the hand-crank mechanism is inserted into the dust cover outside the antenna turntable and connected to the motor hand-crank connector, so as to realize the manual drive of the antenna pitch or azimuth movement. However, due to the influence of the size, quality technical indicators and convenience of the actual operation of the antenna turntable in actual use, it is difficult to solve the above problems by direct connection. Therefore, it is very necessary to design an antenna hand-crank mechanism that can meet the requirements of the antenna shape and parameters and is convenient for users to operate. Utility Model Content

[0003] In view of the problems in the related technology, the utility model proposes an antenna hand-cranking mechanism to overcome the above technical problems existing in the existing related technology.

[0004] The utility model provides an antenna hand-crank mechanism, including a turntable, a hand-crank handle rod is arranged on the turntable; a hand wheel is arranged on the hand-crank handle rod; a gear fixing seat is arranged on the turntable; a second bevel gear is arranged on the gear fixing seat; a motion component is connected to the second bevel gear; one end of the hand-crank handle rod is connected to one end of a first connecting shaft; the other end of the first connecting shaft is connected to the first bevel gear; a sliding groove is opened at one end of the second connecting shaft; a compression spring is installed inside the sliding groove; the compression spring is arranged along the length direction of the sliding groove. A dust cover is arranged on the turntable; a hand-crank fixing seat for supporting the hand-crank handle rod is arranged on the dust cover; a first bearing support seat for supporting the first connecting shaft is arranged on the turntable; a second bearing support seat for supporting the second connecting shaft is arranged on the turntable.

[0005] Preferably, the second bevel gear is connected to the first bevel gear at 90°; for reversing, the hand-cranked mechanism is changed from a straight-line connection to a right-angle connection, avoiding the turntable size of the straight-line connection design to be too large, and the increased mass resulting in the inability to meet the parameters and dimensions required by customers; avoiding the impact on convenience during actual operation; the previous antenna hand-cranked mechanisms were all directly connected, but because many times the turntable size parameters required by customers cannot be directly connected, the current 90° reversing hand-cranked connection is used, and there is no need to remove the hand-cranked part from the turntable, which is more convenient.

[0006] Preferably, the first connecting shaft and the second connecting shaft are on the same connecting shaft; a sliding groove is provided at one end of the second connecting shaft, and a compression spring is installed inside the sliding groove, so that the first bevel gear slides inside the second connecting shaft when the first bevel gear is subjected to the thrust of the handwheel, so that the first bevel gear and the second bevel gear are meshed to realize the manual operation function; when no force is applied to the handwheel, due to the action of the compression spring, the first bevel gear and the second bevel gear are automatically disengaged, thereby not affecting the automatic operation function.

[0007] Preferably, a dust cover is provided on the turntable to prevent dust from the turntable transmission assembly and internal equipment, and to fix the handwheel assembly.

[0008] The utility model provides a hand-cranked mechanism for an antenna. The mechanism utilizes the characteristics of a bevel gear set to change the hand-cranked mechanism from a straight-line connection to a right-angle connection, thereby avoiding the turntable size being too large due to the straight-line connection design, and the increased mass resulting in the inability to meet the parameters and dimensions required by customers. Secondly, the mechanism utilizes a compression spring to make it easy for the first bevel gear and the second bevel gear that form a right angle to open and close. When the power is on, the hand-cranked part is disconnected, and the turntable is operated by electrical control; when the power is off, the hand-cranked part is pushed to make the first bevel gear mesh with the second bevel gear, thereby achieving manual control. Finally, a hand-cranked guide is provided on the dust cover, and the hand wheel and hand-cranked handle bar are fixed to the dust cover, so that the operator can control the pitch or azimuth movement of the antenna more conveniently and quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A schematic diagram of the structure of an antenna hand-crank mechanism provided by the utility model Figure 1 ;

[0010] Figure 2 A schematic diagram of the structure of an antenna hand-crank mechanism provided by the utility model Figure 2 ;

[0011] Figure 3 A schematic diagram of the structure of an antenna hand-crank mechanism provided by the utility model Figure 3 .

[0012] Explanation of the accompanying drawings: turntable 1, gear fixing seat 2, moving assembly 3, hand wheel 4, hand crank handle 5, first bearing support seat 6, first bevel gear 7, second bevel gear 8, second bearing support seat 9, dust cover 10, hand crank fixing seat 11, first connecting shaft 12, sliding groove 13, pin shaft 14, compression spring 15 and second connecting shaft 16. DETAILED DESCRIPTION

[0013] A specific implementation of the present utility model is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present utility model is not limited by the specific implementation mode.

[0014] like Figures 1 to 3 As shown, an antenna hand-crank mechanism provided by an embodiment of the utility model includes a turntable 1, a gear fixing seat 2, a motion component 3, a hand wheel 4, a hand crank handle rod 5, a first bearing support seat 6, a first bevel gear 7, a second bevel gear 8, a second bearing support seat 9, a dust cover 10, a hand crank fixing seat 11, a first connecting shaft 12, a sliding groove 13, a pin 14, a compression spring 15 and a second connecting shaft 16, wherein the turntable 1 is provided with a hand crank handle rod 5; the hand crank handle rod 5 is provided with a hand wheel 4; the turntable 1 is provided with a gear fixing seat 2; the gear fixing seat 2 is provided with a second bevel gear 8; the motion component 3 is connected to the second bevel gear 8 ; One end of the hand crank handle rod 5 is connected to one end of the first connecting shaft 12; the other end of the first connecting shaft 12 is connected to the first bevel gear 7; a sliding groove 13 is provided at one end of the second connecting shaft 16; a compression spring 15 is installed inside the sliding groove 13; the compression spring 15 is arranged along the length direction of the sliding groove 13; a dust cover 10 is provided on the turntable 1; a hand crank fixing seat 11 for supporting the hand crank handle rod 5 is provided on the dust cover 10; a first bearing support seat 6 for supporting the first connecting shaft 12 is provided on the turntable 1; a second bearing support seat 9 for supporting the second connecting shaft 16 is provided on the turntable 1;

[0015] The first connecting shaft 12 and the second connecting shaft 16 are both components that enable the first bevel gear 7 to move forward and backward, and the first connecting shaft 12 and the second connecting shaft 16 are combined with each other; the second bevel gear 8 is connected to the gear fixing seat 2, and only drives it to rotate when the first bevel gear 7 rotates; the second bevel gear 8 cannot move forward and backward, but can only rotate; the first bevel gear 7 can move forward and backward, and can also rotate.

[0016] In this embodiment, the second bevel gear 8 is connected to the first bevel gear 7 at 90 degrees, which is used for reversing, so that the hand-cranked mechanism is changed from a straight-line connection to a right-angle connection, thereby avoiding the turntable size of the straight-line connection design to be too large, and the increased mass resulting in the inability to meet the parameters and dimensions required by the customer, and avoiding the impact on convenience during actual operation.

[0017] In this embodiment, the first connecting shaft 12 and the second connecting shaft 16 are on the same connecting shaft; a sliding groove 13 is provided at one end of the second connecting shaft 16, and a compression spring 15 is installed inside the sliding groove 13, so that the first bevel gear 7 slides in the second connecting shaft 16 when the first bevel gear 7 is pushed by the hand wheel 4, so that the first bevel gear 7 and the second bevel gear 8 are meshed to realize the manual operation function; when no force is applied to the hand wheel 4, due to the action of the compression spring 15, the first bevel gear 7 and the second bevel gear 8 are automatically disengaged, thereby not affecting the automatic operation function.

[0018] In this embodiment, the other end of the first connecting shaft 12 is connected to the first bevel gear 7 via a pin shaft 14 .

[0019] In this embodiment, a dust cover 10 is provided on the turntable 1, which is used to prevent dust from the transmission components and internal equipment of the turntable 1 and to fix the hand wheel component.

[0020] Working principle: In the free state, the antenna can be electrically operated by the motor to achieve the pitch and azimuth movement of the antenna; in the power-off state, the pitch and azimuth movement of the antenna needs to be achieved manually, and the specific steps are as follows: a. Push the hand wheel 4 so that the first connecting shaft 12 connected to the hand crank handle 5 and the first bevel gear 7 move toward the second bevel gear 8 in the sliding groove 13 of the second connecting shaft 16; b. After the first bevel gear 7 is meshed with the second bevel gear 8, the forward thrust of the hand wheel 4 cannot be interrupted when it is turned left and right, so that the antenna connected to the second bevel gear 8 The pitch or azimuth motion assembly starts to rotate, thereby realizing the pitch or azimuth function of the antenna; c. When the pitch or azimuth of the antenna reaches a certain test angle including the storage and deployment angles, release the force of pushing the hand wheel 4, and due to the action of the compression spring 15 located in the second connecting shaft 16, the first connecting shaft 12 and the first bevel gear 7 are disengaged from the second bevel gear 8; this mechanism uses the characteristics of the bevel gear set to change the hand-cranked mechanism from a straight-line connection to a right-angle connection, avoiding the turntable size of the straight-line connection design to be too large, and the increase in mass leads to the inability to meet the parameters and dimensions required by customers. Secondly, this mechanism uses the compression spring 15 to make the first bevel gear 7 and the second bevel gear 8 that form a right angle easy to open and close. When the power is on, the hand-cranked part is disconnected, and the turntable is operated by electrical control; when the power is off, the first bevel gear 7 is meshed with the second bevel gear 8 by pushing the hand-cranked part, thereby realizing manual control. Finally, a hand-crank guide is provided on the dust cover 10, and the hand wheel 4 and the hand-crank handle bar 5 are fixed to the dust cover 10, so that the operator can control the pitch or azimuth movement of the antenna more conveniently and quickly.

[0021] The above disclosure is only a specific embodiment of the present invention, but the embodiments of the present invention are not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. An antenna hand-crank mechanism, characterized in that: The invention comprises a turntable (1), a gear fixing seat (2), a motion component (3), a hand wheel (4), a hand crank handle rod (5), a first bearing support seat (6), a first bevel gear (7), a second bevel gear (8), a second bearing support seat (9), a dust cover (10), a hand crank fixing seat (11), a first connecting shaft (12), a sliding groove (13), a pin shaft (14), a compression spring (15) and a second connecting shaft (16), wherein the turntable (1) is provided with a hand crank handle rod (5); the hand wheel (4) is provided on the hand crank handle rod (5); the turntable (1) is provided with a gear fixing seat (2); the gear fixing seat (2) is provided with a second bevel gear (8); the second bevel gear (8) is connected with a A motion component (3); one end of the hand crank handle rod (5) is connected to one end of a first connecting shaft (12); the other end of the first connecting shaft (12) is connected to a first bevel gear (7); a sliding groove (13) is provided at one end of the second connecting shaft (16); a compression spring (15) is installed inside the sliding groove (13); a dust cover (10) is provided on the turntable (1); a hand crank fixing seat (11) for supporting the hand crank handle rod (5) is provided on the dust cover (10); a first bearing support seat (6) for supporting the first connecting shaft (12) is provided on the turntable (1); and a second bearing support seat (9) for supporting the second connecting shaft (16) is provided on the turntable (1).

2. The antenna hand-crank mechanism according to claim 1, characterized in that: The compression spring (15) is arranged along the length direction of the sliding groove (13).

3. The antenna hand-crank mechanism according to claim 1, characterized in that: The second bevel gear (8) is connected to the first bevel gear (7) at an angle of 90 degrees.

4. The antenna hand-crank mechanism according to claim 1, characterized in that: The other end of the first connecting shaft (12) is connected to the first bevel gear (7) via a pin shaft (14).

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