A portable antenna pitch axis angle locking device

Abstract

The present invention provides a portable antenna pitch axis angle locking device, belonging to the field of antenna equipment technology, the device comprises a pitch axis, a turntable support ear, a first telescopic rod, a second telescopic rod and a locking nut; the end of the pitch axis is fixedly provided with a first eccentric shaft along the axial direction; the turntable support ear is provided with a waist-shaped groove penetrating the end faces on both sides thereof, and the rear end face of the turntable support ear is also fixedly provided with a second eccentric shaft along the axial direction; the waist-shaped groove and the second eccentric shaft are respectively close to the opposite side edges on the end face of the turntable support ear. Compared with the prior art, the manual portable antenna pitch angle positioning and locking mechanism of the present invention is low in cost, simple and easy to operate, and the pitch angle locking and positioning can be completed by turning the hand wheel, and it is safe and reliable, and there will be no phenomenon of loosening due to wind load after locking.

Description

Technical Field

[0001] The invention belongs to the technical field of antenna equipment, and in particular relates to a portable antenna pitch axis angle locking device. Background Art

[0002] During the operation of the portable antenna, ensuring the stability of the antenna surface is a prerequisite for the normal operation of the antenna system, among which the locking of the antenna surface is the most critical.

[0003] In the design of the locking device of the portable antenna, high reliability and simple and fast operation are required. However, the existing multi-frequency forward-fed and offset-fed manual portable antennas have an antenna pitch angle locking and positioning system. The multi-frequency manual portable antenna pitch angle locking and positioning system currently on the market uses a worm gear self-locking device, which is costly and the friction self-locking structure is unstable. Summary of the invention

[0004] Therefore, the purpose of the present invention is to provide a portable antenna pitch axis angle locking device to overcome the problems of unstable self-locking and high cost in the prior art.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A portable antenna pitch axis angle locking device comprises a pitch axis and a turntable support ear, and also comprises a first telescopic rod, a second telescopic rod and a locking nut; a first eccentric shaft is fixedly arranged at the end of the pitch axis along the axial direction; the turntable support ear is provided with a waist-shaped groove penetrating through the end faces on both sides thereof, and a second eccentric shaft is fixedly arranged at the rear end face of the turntable support ear along the axial direction; the waist-shaped groove and the second eccentric shaft are respectively close to opposite side edges on the end face of the turntable support ear;

[0007] The first eccentric shaft passes through the waist-shaped groove to meet the pitch angle adjustment range of the pitch shaft; the first telescopic rod and the first eccentric shaft are perpendicular to each other, one end of the first telescopic rod is fixedly connected to the end of the first eccentric shaft, and the other end of the first telescopic rod is provided with an external thread, and a locking nut is sleeved on the external thread;

[0008] The second telescopic rod is perpendicular to the second eccentric shaft, one end of the second telescopic rod is connected to the end of the second eccentric shaft, so that the second telescopic rod can rotate freely relative to the turntable support ear; the other end of the second telescopic rod is provided with an external thread;

[0009] The external thread arranged at the other end of the second telescopic rod is matched with the internal thread of the locking nut, so that the locking nut can coaxially lock the second telescopic rod with the first telescopic rod.

[0010] Preferably, the other end of the second telescopic rod is provided with a cylindrical inner hole, the inner diameter of the cylindrical inner hole is not less than the outer diameter of the other end of the first telescopic rod, and the other end of the first telescopic rod extends into the cylindrical inner hole.

[0011] Preferably, one end of the first telescopic rod is matched with a first retaining ring and a cross countersunk screw to achieve fixed connection with the pitch and roll mechanism.

[0012] Preferably, the end of the first eccentric shaft passes through one end of the first telescopic rod and is connected to the first retaining ring and the cross countersunk screw.

[0013] Preferably, one end of the second telescopic rod is cooperatively connected to the second eccentric shaft on the rear end surface of the turntable support ear through a second retaining ring and a step screw, so that the second telescopic rod can rotate freely relative to the turntable support ear.

[0014] Preferably, the end of the second eccentric shaft passes through one end of the second telescopic rod and is connected to the step screw; the end surfaces of both sides of the second retaining ring are in contact with the inner bottom surfaces of the second telescopic rod and the step screw respectively.

[0015] Preferably, the length of the other end of the first telescopic rod extending into the cylindrical inner hole portion is 4.71 mm-15.92 mm.

[0016] Preferably, the curvature of the waist-shaped groove is 40°-60°, and the width of the waist-shaped groove is 12mm-14mm.

[0017] Preferably, the diameter of the turntable support ear is 90mm-110mm; the distance between the waist-shaped groove and the nearest edge of the turntable support ear is 12mm-18mm; the distance between the axis of the second eccentric shaft and the center of the turntable support ear is 35mm-45mm.

[0018] Preferably, the length of the first telescopic rod is equal to the length of the second telescopic rod.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The beneficial effects of the present invention are:

[0021] 1. The second telescopic rod can be coaxially locked with the first telescopic rod by manually turning the locking nut, so the cost is low and the operation is simple and easy.

[0022] 2. The first retaining ring and the cross countersunk screw are used in combination to further lock and position the pitch axis. Furthermore, one end of the second telescopic rod is connected to the second eccentric shaft on the rear end surface of the turntable support ear through the second retaining ring and the step screw, so that the second telescopic rod can rotate freely relative to the turntable support ear to achieve flexible locking and positioning.

[0023] 3. Furthermore, by means of the locking nut, cross countersunk screw and retaining ring, it is ensured that after the pitch axis is fixed at a fixed angle, it is firm and reliable and will not loosen due to wind load. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] Figure 1 It is the axonometric view of the locking mechanism;

[0026] Figure 2 is the front view of the locking mechanism;

[0027] Figure 3 It is the right side view of the locking mechanism;

[0028] Figure 4 The locking mechanism is along Figure 3 Cross-section along line AA.

[0029] Figure 5 It is the dimension marking diagram of the pitch axis (including the first eccentric axis), where a is the right view of b;

[0030] Figure 6 is a dimension marking diagram of the first telescopic rod, wherein b is a cross-sectional view of a in the AA direction;

[0031] Figure 7 is a dimension marking diagram of the second telescopic rod, wherein b is a cross-sectional view of a in the AA direction;

[0032] Figure 8 This is the dimension marking diagram of the turntable support ear (containing the second eccentric shaft), where a is the right view of b.

[0033] The meanings of the reference numerals are as follows:

[0034] 1-pitch axis, 2-turntable support ear, 3-first telescopic rod, 4-second telescopic rod, 5-locking nut, 6-first retaining ring, 7-cross countersunk screw, 8-second retaining ring, 9-step screw, 10-first eccentric shaft, 20-second eccentric shaft. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] The technical solution of the present invention is as follows:

[0037] A portable antenna pitch axis angle locking device comprises a pitch axis and a turntable support ear, and also comprises a first telescopic rod, a second telescopic rod and a locking nut; a first eccentric shaft is fixedly arranged at the end of the pitch axis along the axial direction; the turntable support ear is provided with a waist-shaped groove penetrating through the end faces on both sides thereof, and a second eccentric shaft is also fixedly arranged at the rear end face of the turntable support ear along the axial direction; the waist-shaped groove and the second eccentric shaft are respectively close to the opposite side edges on the end face of the turntable support ear; the first eccentric shaft passes through the waist-shaped groove to meet the pitch angle adjustment range of the pitch axis; the first telescopic rod is perpendicular to the first eccentric shaft, and the second eccentric shaft is perpendicular to the first eccentric shaft. One end of a telescopic rod is fixedly connected to the end of the first eccentric shaft, and the other end of the first telescopic rod is provided with an external thread, and a locking nut is sleeved on the external thread; the second telescopic rod and the second eccentric shaft are perpendicular to each other, and one end of the second telescopic rod is connected to the end of the second eccentric shaft, so that the second telescopic rod can rotate freely relative to the turntable support ear; the other end of the second telescopic rod is provided with an external thread; the external thread provided at the other end of the second telescopic rod is adapted to the internal thread of the locking nut, so that the locking nut can coaxially lock the second telescopic rod with the first telescopic rod, so the operation is simple and the cost is low.

[0038] Furthermore, a cylindrical inner hole is provided at the other end of the second telescopic rod, and the inner diameter of the cylindrical inner hole is not less than the outer diameter of the other end of the first telescopic rod. The other end of the first telescopic rod extends into the cylindrical inner hole. The cylindrical inner hole can be a smooth hole or a threaded hole. The smooth hole uses a locking nut to fix the first telescopic rod and the second telescopic rod. On the basis of being fixable by itself, the threaded hole is further fixed with a locking nut, which is more stable and reliable.

[0039] Furthermore, one end of the first telescopic rod is matched with the first retaining ring and the cross countersunk screw to achieve fixed connection with the pitch and roll.

[0040] Furthermore, the end of the first eccentric shaft passes through one end of the first telescopic rod and is connected to the first retaining ring and the cross countersunk screw.

[0041] Furthermore, one end of the second telescopic rod is connected to the second eccentric shaft on the rear end surface of the turntable support ear through a second retaining ring and a step screw, so that the second telescopic rod can rotate freely relative to the turntable support ear.

[0042] Furthermore, the end of the second eccentric shaft passes through one end of the second telescopic rod and is connected to the step screw; the end surfaces of both sides of the second retaining ring are in contact with the inner bottom surfaces of the second telescopic rod and the step screw respectively.

[0043] Furthermore, the length of the other end of the first telescopic rod extending into the cylindrical inner hole portion is 4.71 mm-15.92 mm.

[0044] Furthermore, the curvature of the waist-shaped groove is 40°-60°, and the width of the waist-shaped groove is 12mm-14mm.

[0045] Furthermore, the diameter of the turntable support ear is 90mm-110mm; the distance between the waist-shaped groove and the nearest edge of the turntable support ear is 12mm-18mm; the distance between the axis of the second eccentric shaft and the center of the turntable support ear is 35mm-45mm.

[0046] It should be noted that the waist-shaped groove is an axisymmetric structure, and the second eccentric shaft does not have to be arranged at the symmetry axis of the waist-shaped groove, but can be deviated by a certain angle.

[0047] Furthermore, the length of the first telescopic rod is equal to the length of the second telescopic rod.

[0048] In addition, after the manual portable antenna is aligned, the pitch angle needs to be locked during the installation of the device to ensure that the antenna surface can maintain the aligned state. It is only necessary to ensure that the pitch axis 1 does not rotate under the action of wind (the antenna surface ear is connected to the pitch axis 1 through a flat key). An eccentric shaft extends from the end of the pitch axis 1 and passes through the waist-shaped groove on the turntable ear 2 to ensure that the pitch angle of the pitch axis is within the range required by the user. The turntable ear 2 is fixed to the turntable, and the second telescopic rod 4 passes through the shaft extending from the turntable ear 2, and then connected with the second retaining ring 8 and the step screw 9. Ensure that the second telescopic rod 4 can rotate freely relative to the turntable ear 2 (the rotation range is limited by the deflection range of the first telescopic rod 3). Similarly, the first telescopic rod 3 is connected to the pitch axis 1 through the first retaining ring 6 and the cross countersunk screw 7, so that the first telescopic rod 3 can rotate with the pitch axis 1. The end of the second telescopic rod 4 has an external thread, which can be connected with the locking nut 5.

[0049] In addition, the present invention provides a portable antenna pitch axis angle locking device, the working principle of which is as follows:

[0050] The working principle of the locking device is that when the double eccentric shaft is rotating, the length of one shaft will inevitably change, otherwise it will not be able to rotate.

[0051] Reference Figure 1-4As shown, when the pitch axis 1 rotates, it must rotate around its own central axis and also rotate its own extended axis around the extended axis of the turntable support ear 2 (connected to the turntable and can be regarded as a fixed object). Since the first telescopic rod 3 is connected to the pitch axis 1 and the second telescopic rod 4 is connected to the turntable support ear 2, the pitch axis 1 will inevitably cause the first telescopic rod 3 and the second telescopic rod 4 to move relative to each other during rotation. At this time, if the first telescopic rod 3 and the second telescopic rod 4 are connected and fixed by the locking nut 5 so that their relative positions do not change, the pitch axis 1 will not be able to rotate.

[0052] When the present invention is operated, Figure 5 It is the dimension marking diagram of the pitch axis; Figure 6 is a dimension marking diagram of the first telescopic rod; Figure 7 is a dimension marking diagram of the second telescopic rod; Figure 8 This is the turntable lug size marking diagram, using Figure 5-8 When adjusting the pitch angle of the antenna surface, first loosen the locking nut 5 to allow the first telescopic rod 3 and the second telescopic rod 4 to move relative to each other (but the first telescopic rod 3 will not fall out of the second telescopic rod 4), and then adjust the pitch angle of the antenna surface. After the pitch angle of the antenna surface is adjusted, turn the locking nut 5 to screw it with the thread at the end of the second telescopic rod 4 to lock the first telescopic rod 3 and the second telescopic rod 4, so that the pitch rotation axis 1 is locked to complete the pitch angle locking operation.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A portable antenna pitch axis angle locking device, comprising a pitch axis and a turntable support ear, characterized in that: It also includes a first telescopic rod, a second telescopic rod and a locking nut; a first eccentric shaft is fixedly arranged at the end of the pitch rotation axis along the axial direction; the turntable support ear is provided with a waist-shaped groove penetrating through the end faces on both sides thereof, and a second eccentric shaft is also fixedly arranged on the rear end face of the turntable support ear along the axial direction; the waist-shaped groove and the second eccentric shaft are respectively close to opposite side edges on the end face of the turntable support ear; The first eccentric shaft passes through the waist-shaped groove to meet the pitch angle adjustment range of the pitch shaft; the first telescopic rod and the first eccentric shaft are perpendicular to each other, one end of the first telescopic rod is fixedly connected to the end of the first eccentric shaft, and the other end of the first telescopic rod is provided with an external thread, and a locking nut is sleeved on the external thread; The second telescopic rod is perpendicular to the second eccentric shaft, one end of the second telescopic rod is connected to the end of the second eccentric shaft, so that the second telescopic rod can rotate freely relative to the turntable support ear; the other end of the second telescopic rod is provided with an external thread; The external thread provided at the other end of the second telescopic rod is adapted to the internal thread of the locking nut, so that the locking nut can coaxially lock the second telescopic rod with the first telescopic rod; One end of the first telescopic rod is fixedly connected to the pitch shaft by means of a first retaining ring and a cross countersunk screw; The end of the first eccentric shaft passes through one end of the first telescopic rod and is connected to the first retaining ring and the cross countersunk screw; One end of the second telescopic rod is connected to the second eccentric shaft on the rear end surface of the turntable support ear through a second retaining ring and a step screw, so that the second telescopic rod can rotate freely relative to the turntable support ear; The end of the second eccentric shaft passes through one end of the second telescopic rod and is connected to the step screw; the end surfaces of both sides of the second retaining ring are in contact with the inner bottom surfaces of the second telescopic rod and the step screw respectively; After the manual portable antenna is aligned with the satellite, the device needs to be installed with the pitch angle locked to ensure that the antenna surface can maintain the alignment state, and the antenna surface ear is connected to the pitch shaft through a flat key. An eccentric shaft extends from the end of the pitch shaft and passes through the waist-shaped groove on the turntable ear to ensure that the pitch angle of the pitch shaft is within the required range. The turntable ear is fixed to the turntable, and the second telescopic rod passes through the shaft extending from the turntable ear, and then is connected with a second retaining ring and a step screw to ensure that the second telescopic rod can rotate freely relative to the turntable ear, and the rotation range is limited by the deflection range of the first telescopic rod; The working principle of the locking device is that when the double eccentric shaft is rotating, the length of one shaft will inevitably change, otherwise it will not be able to rotate; When the pitch axis rotates, it must rotate around its own central axis and also rotate its own extended axis around the axis extended from the turntable support ear. The first telescopic rod is connected to the pitch axis, and the second telescopic rod is connected to the turntable support ear. During the rotation of the pitch axis, the first telescopic rod and the second telescopic rod produce relative movement. The first telescopic rod and the second telescopic rod are connected and fixed by a locking nut so that their relative positions do not change. When adjusting the pitch angle of the antenna surface, first loosen the locking nut to allow the first telescopic rod and the second telescopic rod to move relative to each other, and then adjust the pitch angle of the antenna surface. After the pitch angle of the antenna surface is adjusted, turn the locking nut to screw it into the thread at the end of the second telescopic rod, lock the first telescopic rod and the second telescopic rod, thereby locking the pitch shaft and completing the pitch angle locking operation.

2. A portable antenna pitch axis angle locking device according to claim 1, characterized in that: The other end of the second telescopic rod is provided with a cylindrical inner hole, the inner diameter of the cylindrical inner hole is not less than the outer diameter of the other end of the first telescopic rod, and the other end of the first telescopic rod extends into the cylindrical inner hole.

3. A portable antenna pitch axis angle locking device according to claim 2, characterized in that: The other end of the first telescopic rod extends into the cylindrical inner hole by a length of 4.71 mm to 15.92 mm.

4. The portable antenna pitch axis angle locking device according to claim 1, characterized in that: The curvature of the waist-shaped groove is 40°-60°, and the width of the waist-shaped groove is 12mm-14mm.

5. The portable antenna pitch axis angle locking device according to claim 1, characterized in that: The diameter of the turntable support ear is 90mm-110mm; the distance between the waist-shaped groove and the nearest edge of the turntable support ear is 12mm-18mm; the distance between the axis of the second eccentric shaft and the center of the turntable support ear is 35mm-45mm.

6. A portable antenna pitch axis angle locking device according to claim 5, characterized in that: The length of the first telescopic rod is equal to the length of the second telescopic rod.

Images