Double-degree-of-freedom rotating device

Abstract

The utility model provides a two-degree-of-freedom rotating device. The two-degree-of-freedom rotating device comprises a supporting base, a driven bevel gear, a first driving bevel gear, a second driving bevel gear, an output piece, a first rotating driving piece and a second rotating driving piece. The driven bevel gear is mounted at the top end of the supporting seat; the first driving bevel gear is meshed with the driven bevel gear; the second driving bevel gear is meshed with the driven bevel gear; the rotating axis of the second driving bevel gear coincides with the rotating axis of the first driving bevel gear. The output piece is rotationally connected with transmission shafts of the first driving bevel gear and the second driving bevel gear; the first rotary driving part is mounted on the output part and is connected with the first driving bevel gear; the second rotation driving piece is installed on the output piece and connected with the second driving bevel gear. By controlling the rotating directions of the first driving bevel gear and the second driving bevel gear, the two-degree-of-freedom rotating motion of the output piece can be achieved, the structure is simplified, materials are reduced, the assembling procedure is simplified, and a control instruction is simplified.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of rotating mechanism, and more particularly relates to a double-degree-of-freedom rotating device. BACKGROUND

[0002] A satellite signal receiver is a device for receiving and processing signals from satellites, widely used in navigation, communication and meteorology, etc. It usually includes key components such as antenna, low noise amplifier, down converter, intermediate frequency amplifier, signal processor, etc. The core function of the satellite signal receiver is to amplify the weak signals transmitted by the satellite and convert them into processable electrical signals, then decode and analyze them through the signal processor, and finally extract useful information.

[0003] In order to better receive signals, the satellite signal receiver usually needs to adjust the attitude, such as horizontal rotation, pitch rotation, etc. In order to realize these attitude adjustments, the traditional satellite signal receiver usually adopts multiple single-degree-of-freedom rotating mechanisms to complete the combination. However, this design has problems such as complex structure, difficult control, high cost, etc. In addition, the combination of multiple single-degree-of-freedom rotating mechanisms often leads to a large overall mechanism volume, which is not conducive to the miniaturization and integration of the device. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the embodiment of the application is to provide a double-degree-of-freedom rotating device to solve the technical problems of complex structure and high cost of the rotating device in the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the application is to provide a double-degree-of-freedom rotating device, which comprises a support seat, a driven bevel gear, a first driving bevel gear, a second driving bevel gear, an output member, a first rotating driving member and a second rotating driving member. The driven bevel gear is installed at the top end of the support seat. The first driving bevel gear is engaged with the driven bevel gear. The second driving bevel gear is engaged with the driven bevel gear. The rotation axis of the second driving bevel gear coincides with the rotation axis of the first driving bevel gear. The output member is rotationally connected with the transmission shaft of the first driving bevel gear and the transmission shaft of the second driving bevel gear. The first rotating driving member is installed on the output member, and the output shaft of the first rotating driving member is in transmission connection with the first driving bevel gear. The second rotating driving member is installed on the output member, and the output shaft of the second rotating driving member is in transmission connection with the second driving bevel gear.

[0006] Further, the double-degree-of-freedom rotating device further comprises a first speed reducer, the input end of the first speed reducer is connected with the output shaft of the first rotating driving member, and the output end of the first speed reducer is connected with the first driving bevel gear.

[0007] Further, the first speed reducer comprises a first-stage worm, a first-stage worm wheel, a driving bevel gear, a driven bevel gear, a second-stage worm, and a second-stage worm wheel; the first-stage worm is connected with the output shaft of the first rotary driver; the first-stage worm wheel is engaged with the first-stage worm; the driving bevel gear is coaxially arranged with the first-stage worm wheel; the driven bevel gear is engaged with the driving bevel gear; the second-stage worm is coaxially arranged with the driven bevel gear; the second-stage worm wheel is engaged with the second-stage worm, and the transmission shaft of the second-stage worm wheel is connected with the transmission shaft of the first driving bevel gear.

[0008] Further, the second-stage worm is a single-head worm, and the helix angle of the second-stage worm is less than the friction angle.

[0009] Further, the first speed reducer further comprises a machine box, which is mounted on the output member, and the first-stage worm, the first-stage worm wheel, the driving bevel gear, the driven bevel gear, the second-stage worm, and the second-stage worm wheel are arranged in the machine box.

[0010] Further, the double-degree-of-freedom rotary device further comprises a second speed reducer, the input end of which is connected with the second rotary driver, and the output end of which is connected with the second driving bevel gear.

[0011] Further, the structure of the second speed reducer is the same as that of the first speed reducer.

[0012] Further, the support base comprises a base and a support rod, one end of the support rod is connected with the base, and the other end of the support rod is connected with the driven bevel gear.

[0013] Further, the output member comprises a panel, a first mounting base, and a second mounting base; the first mounting base is mounted on the panel, and the first mounting base is rotationally connected with the transmission shaft of the first driving bevel gear; the second mounting base is mounted on the panel, and the second mounting base is rotationally connected with the transmission shaft of the second driving bevel gear.

[0014] Further, the output member further comprises a protective cover, which is covered with the panel; the driven bevel gear, the first driving bevel gear, the second driving bevel gear, the first rotary driver, the second rotary driver, the first speed reducer, and the second speed reducer are arranged in the protective cover.

[0015] The double-degree-of-freedom rotating device provided by the application has the advantages that compared with the prior art, the double-degree-of-freedom rotating device provided by the application simplifies the structure, reduces the material, simplifies the assembly process and simplifies the control instruction. By controlling the rotation directions of the first driving bevel gear and the second driving bevel gear, the two-degree-of-freedom rotating movement of the output member can be realized. When the rotation directions of the first driving bevel gear and the second driving bevel gear are the same, the output member can rotate 360° freely around the axis of the transmission shaft of the driven bevel gear; when the rotation directions of the first driving bevel gear and the second driving bevel gear are opposite, the output member can rotate ±90° around the axis of the transmission shaft of the first driving bevel gear (or the second driving bevel gear). BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0017] Figure 1 The double-degree-of-freedom rotating device (without protective cover) provided by the embodiment of the application is shown in the perspective view.

[0018] Figure 2 The double-degree-of-freedom rotating device (without protective cover) provided by the embodiment of the application is shown in the front view.

[0019] Figure 3 The double-degree-of-freedom rotating device provided by the embodiment of the application is shown in the perspective view. Figure 2 The double-degree-of-freedom rotating device provided by the embodiment of the application is shown in the perspective view.

[0020] Figure 4 The double-degree-of-freedom rotating device provided by the embodiment of the application is shown in the perspective view.

[0021] Figure 5 The double-degree-of-freedom rotating device provided by the embodiment of the application is shown in the perspective view.

[0022] In the drawings, various reference signs represent:

[0023] 100 - support seat; 110 - base; 120 - support rod;

[0024] 200 - driven bevel gear;

[0025] 300 - first driving bevel gear;

[0026] 400 - second driving bevel gear;

[0027] 500 - output member; 510 - faceplate; 520 - first mounting seat; 530 - second mounting seat; 540 - protective cover;

[0028] 600 - first rotary drive member;

[0029] 700 - second rotary drive member;

[0030] 800 - first speed reducer; 810 - first stage worm; 820 - first stage worm gear; 830 - driving helical gear; 840 - driven helical gear; 850 - second stage worm; 860 - second stage worm gear; 870 - machine case;

[0031] 900 - second speed reducer. DETAILED DESCRIPTION

[0032] In order to make the technical problems solved by the present application, the technical solutions and the beneficial effects clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0033] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0035] In addition, the terms "first", "second" are only used for description purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0036] Please refer to Figure 1 and Figure 2The double-freedom rotating device provided by the embodiment of the present application will be described. The double-freedom rotating device comprises a support base 100, a driven bevel gear 200, a first driving bevel gear 300, a second driving bevel gear 400, an output member 500, a first rotating driving member 600, and a second rotating driving member 700. The driven bevel gear 200 is installed at the top end of the support base 100. The first driving bevel gear 300 is engaged with the driven bevel gear 200. The second driving bevel gear 400 is engaged with the driven bevel gear 200. The rotation axis of the second driving bevel gear 400 coincides with the rotation axis of the first driving bevel gear 300. The output member 500 is rotationally connected with the transmission shaft of the first driving bevel gear 300 and the transmission shaft of the second driving bevel gear 400. The first rotating driving member 600 is installed on the output member 500, and the output shaft of the first rotating driving member 600 is in transmission connection with the first driving bevel gear 300. The second rotating driving member 700 is installed on the output member 500, and the output shaft of the second rotating driving member 700 is in transmission connection with the second driving bevel gear 400.

[0037] Compared with the prior art, the double-freedom rotating device provided by the embodiment of the present application simplifies the structure, reduces the material, simplifies the assembly process, and simplifies the control instruction. By controlling the rotation directions of the first driving bevel gear 300 and the second driving bevel gear 400, the two-freedom rotating movement of the output member 500 can be realized. When the rotation directions of the first driving bevel gear 300 and the second driving bevel gear 400 are the same, the output member 500 can rotate 360° freely around the axis of the transmission shaft of the driven bevel gear 200. When the rotation directions of the first driving bevel gear 300 and the second driving bevel gear 400 are opposite, the output member 500 can rotate ±90° around the axis of the transmission shaft of the first driving bevel gear 300 (or the second driving bevel gear 400).

[0038] In one embodiment of the present application, please refer to Figure 2 and Figure 3 The double-freedom rotating device further comprises a first speed reducer 800. The input end of the first speed reducer 800 is connected with the output shaft of the first rotating driving member 600. The output end of the first speed reducer 800 is connected with the first driving bevel gear 300.

[0039] In the embodiment, the first speed reducer 800 can effectively reduce the rotation speed of the first driving bevel gear 300 and increase the torque, thereby ensuring that the first driving bevel gear 300 obtains sufficient driving force to drive the driven bevel gear 200 to rotate stably. In addition, the speed reducer 800 can also realize accurate control of the rotation speed and improve the stability and reliability of the entire double-freedom rotating device.

[0040] In one embodiment of the present application, please refer toFigure 3 and Figure 4 The first speed reducer 800 comprises a first-stage worm 810, a first-stage worm wheel 820, a driving bevel gear 830, a driven bevel gear 840, a second-stage worm 850, and a second-stage worm wheel 860. The first-stage worm 810 is connected with the output shaft of the first rotary driving member 600. The first-stage worm wheel 820 is engaged with the first-stage worm 810. The driving bevel gear 830 is coaxially arranged with the first-stage worm wheel 820. The driven bevel gear 840 is engaged with the driving bevel gear 830. The second-stage worm 850 is coaxially arranged with the driven bevel gear 840. The second-stage worm wheel 860 is engaged with the second-stage worm 850, and the transmission shaft of the second-stage worm wheel 860 is connected with the transmission shaft of the first driving bevel gear 300.

[0041] In the embodiment, the driving bevel gear 830 is coaxially arranged with the first-stage worm wheel 820, which means that the driving bevel gear 830 and the first-stage worm wheel 820 are mounted on the same shaft. The second-stage worm 850 is coaxially arranged with the driven bevel gear 840, which means that the second-stage worm 850 and the driven bevel gear 840 are mounted on the same shaft.

[0042] In the embodiment, the first speed reducer 800 has the advantages of compact structure and large output torque. Only two-stage worm bevel gear transmission mechanism is used, so that large speed ratio and large torque transmission are realized, the structural space is saved, the large torque transmission is realized, the stability and precision of transmission are improved through the worm bevel gear transmission mechanism, the noise and vibration are reduced, and the performance of the double-degree-of-freedom rotary device is further improved.

[0043] In an embodiment of the present application, the second-stage worm 850 is a single-head worm, and the helix angle of the second-stage worm 850 is less than the friction angle.

[0044] In the embodiment, the second-stage worm 850 is a single-head worm, and the helix angle is less than the friction angle, so that the absolute self-locking of the first speed reducer 800 is realized. Even if the output member 500 is forced to rotate abnormally due to super typhoon or other severe weather, the reliability of the function of the output member 500 under the extremely strong wind is ensured.

[0045] In an embodiment of the present application, please refer to Figure 2 and Figure 3 The first speed reducer 800 further comprises a machine box 870, the machine box 870 is mounted on the output member 500, and the first-stage worm 810, the first-stage worm wheel 820, the driving bevel gear 830, the driven bevel gear 840, the second-stage worm 850, and the second-stage worm wheel 860 are arranged in the machine box 870.

[0046] In this embodiment, the cabinet 870 can effectively protect the components of the first speed reducer 800, avoid interference and damage from the external environment, and also play a role in sound insulation and noise reduction, further reducing the noise generated by the double-degree-of-freedom rotating device during operation. The design of the cabinet 870 also facilitates user maintenance and repair, improving the ease of use and reliability of the double-degree-of-freedom rotating device.

[0047] In one embodiment of the present application, please refer to Figure 1 and Figure 2 , the double-degree-of-freedom rotating device further comprises a second speed reducer 900, the input end of the second speed reducer 900 is connected with the second rotating drive member 700; the output end of the second speed reducer 900 is connected with the second driving bevel gear 400.

[0048] In this embodiment, the second speed reducer 900 is similar to the first speed reducer 800, which can effectively reduce the speed of the second driving bevel gear 400 and increase the torque, thereby ensuring that the second driving bevel gear 400 has enough driving force to drive the driven bevel gear 200 to rotate stably.

[0049] In one embodiment of the present application, please refer to Figure 1 and Figure 2 , the structure of the second speed reducer 900 is the same as that of the first speed reducer 800.

[0050] In this embodiment, by using the second speed reducer 900 with the same structure as the first speed reducer 800, not only the same performance and function of the second speed reducer 900 as the first speed reducer 800 can be ensured, but also the production and maintenance costs of the double-degree-of-freedom rotating device can be reduced.

[0051] Specifically, like the first speed reducer 800, the second speed reducer 900 also adopts a continuous two-stage worm helical tooth transmission mechanism to achieve large speed ratio, large torque transmission, save structure space, improve the stability and precision of transmission, reduce noise and vibration, and improve the performance of the double-degree-of-freedom rotating device. At the same time, the second speed reducer 900 also has a self-locking function, which can ensure the reliability of the output member 500 function in bad weather. At the same time, since the first speed reducer 800 and the second speed reducer 900 have the same structure, they can be easily interchanged and replaced, improving the flexibility and expandability of the double-degree-of-freedom rotating device.

[0052] In one embodiment of the present application, please refer to Figure 1 and Figure 2 , the support seat 100 comprises a base 110 and a support rod 120; one end of the support rod 120 is connected with the base 110, and the other end of the support rod 120 is connected with the driven bevel gear 200.

[0053] In this embodiment, the support rod 120 can effectively support the driven bevel gear 200 at a proper height, ensuring the meshing effect of the driven bevel gear 200 with the first driving bevel gear 300 and the second driving bevel gear 400. Meanwhile, the support rod 120 also has certain rigidity and stability, and can withstand the force and torque generated by the driven bevel gear 200 during rotation, ensuring the stable operation of the double-degree-of-freedom rotating device.

[0054] In an embodiment of the present application, referring to Figure 1 and Figure 2 , the output member 500 comprises a panel 510, a first mounting seat 520 and a second mounting seat 530; the first mounting seat 520 is mounted on the panel 510, and the first mounting seat 520 is rotationally connected with the transmission shaft of the first driving bevel gear 300; the second mounting seat 530 is mounted on the panel 510, and the second mounting seat 530 is rotationally connected with the transmission shaft of the second driving bevel gear 400.

[0055] In this embodiment, by arranging the first mounting seat 520 and the second mounting seat 530, the transmission shafts of the first driving bevel gear 300 and the second driving bevel gear 400 can be conveniently connected with the output member 500, while ensuring the stability and reliability of the transmission shafts during rotation.

[0056] In an embodiment of the present application, referring to Figure 1 and Figure 5 , the output member 500 further comprises a protective cover 540, and the protective cover 540 covers the panel 510; the driven bevel gear 200, the first driving bevel gear 300, the second driving bevel gear 400, the first rotating driving member 600, the second rotating driving member 700, the first speed reducer 800 and the second speed reducer 900 are arranged in the protective cover 540.

[0057] In this embodiment, the arrangement of the protective cover 540 can effectively protect the key components of the double-degree-of-freedom rotating device, avoiding interference and damage from the external environment, such as dust, moisture, etc. Meanwhile, the protective cover 540 can also play a role in sound insulation and noise reduction, further reducing the noise generated by the double-degree-of-freedom rotating device during operation, improving the user experience. In addition, the design of the protective cover 540 can also facilitate user maintenance and repair, and the user can check and repair the internal components by opening the protective cover 540 without disassembling the entire device, improving the ease of use and reliability of the double-degree-of-freedom rotating device.

[0058] In this embodiment, the output member 500 is a satellite signal receiver. In another embodiment of the present application, the output member 500 can also be a display or other items that need to be adjusted in attitude, which is not specifically limited herein. The first rotary drive member 600 and the second rotary drive member 700 can both be electric motors.

[0059] The working principle of the double-degree-of-freedom rotary device provided in the embodiments of the present application is as follows:

[0060] (1) Pitch +-90° rotation. Start the first rotary drive member 600 and the second rotary drive member 700; make the rotational speeds of the output shafts of the first rotary drive member 600 and the second rotary drive member 700 equal and the rotational directions opposite; the first rotary drive member 600 drives the first driving bevel gear 300 to rotate through the first speed reducer 800; the second rotary drive member 700 drives the second driving bevel gear 400 to rotate in the opposite direction through the second speed reducer 900; because the rotational speeds of the first driving bevel gear 300 and the second driving bevel gear 400 are equal and the rotational directions opposite, the first driving bevel gear 300 and the second driving bevel gear 400 remain relatively stationary with the driven bevel gear 200; and the first rotary drive member 600 and the second rotary drive member 700 are installed on the output member 500, thus driving the output member 500 to pitch +-90° rotation around the axis of the transmission shaft of the first driving bevel gear 300 (or the second driving bevel gear 400).

[0061] (2) Horizontal 360° rotation. Start the first rotary drive member 600 and the second rotary drive member 700; make the rotational speeds of the output shafts of the first rotary drive member 600 and the second rotary drive member 700 equal and the rotational directions same; the first rotary drive member 600 drives the first driving bevel gear 300 to rotate through the first speed reducer 800; the second rotary drive member 700 drives the second driving bevel gear 400 to rotate in the same direction through the second speed reducer 900; because the rotational speeds of the first driving bevel gear 300 and the second driving bevel gear 400 are equal and the rotational directions same, the first driving bevel gear 300 and the second driving bevel gear 400 rotate around the axis of the transmission shaft of the driven bevel gear 200; and further drive the output member 500 to horizontally rotate 360° around the axis of the transmission shaft of the driven bevel gear 200.

[0062] The above merely provides the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A two-degree-of-freedom rotary device, characterized by, The double-freedom rotary device comprises a support base, a driven bevel gear mounted at the top end of the support base, a first driving bevel gear meshing with the driven bevel gear, a second driving bevel gear meshing with the driven bevel gear, a rotation axis of the second driving bevel gear coinciding with a rotation axis of the first driving bevel gear, an output member rotationally connected with a transmission shaft of the first driving bevel gear and a transmission shaft of the second driving bevel gear, a first rotary driving member mounted on the output member, an output shaft of the first rotary driving member being in transmission connection with the first driving bevel gear, and a second rotary driving member mounted on the output member, an output shaft of the second rotary driving member being in transmission connection with the second driving bevel gear. The double-freedom rotary device further comprises a first speed reducer, an input end of the first speed reducer being connected with the output shaft of the first rotary driving member, and an output end of the first speed reducer being connected with the first driving bevel gear. The first speed reducer comprises a first-stage worm, an input end of the first-stage worm being connected with the output shaft of the first rotary driving member, a first-stage worm wheel meshing with the first-stage worm, a driving helical gear coaxially arranged with the first-stage worm wheel, a driven helical gear meshing with the driving helical gear, a second-stage worm coaxially arranged with the driven helical gear, and a second-stage worm wheel meshing with the second-stage worm, a transmission shaft of the second-stage worm wheel being connected with the transmission shaft of the first driving bevel gear. The second-stage worm is a single-head worm, and a helix angle of the second-stage worm is smaller than a friction angle. The first speed reducer further comprises a casing mounted on the output member, the first-stage worm, the first-stage worm wheel, the driving helical gear, the driven helical gear, the second-stage worm and the second-stage worm wheel being arranged in the casing. The double-freedom rotary device further comprises a second speed reducer, an input end of the second speed reducer being connected with the second rotary driving member, and an output end of the second speed reducer being connected with the second driving bevel gear. The second speed reducer has the same structure as the first speed reducer. The support base comprises a base and a support rod, one end of the support rod being connected with the base, and the other end of the support rod being connected with the driven bevel gear. The output member comprises a panel, a first mounting base mounted on the panel, the first mounting base being rotationally connected with the transmission shaft of the first driving bevel gear, and a second mounting base mounted on the panel, the second mounting base being rotationally connected with the transmission shaft of the second driving bevel gear.

2. The dual degree of freedom rotational device of claim 1, wherein, The output member further comprises a protective cover, the protective cover being covered with the panel, the driven bevel gear, the first driving bevel gear, the second driving bevel gear, the first rotary driving member, the second rotary driving member, the first speed reducer and the second speed reducer being arranged in the protective cover.

3. The dual degree of freedom rotational device of claim 2, wherein, ​ ​ ​ ​ ​ ​ ​ 4. The dual degree of freedom rotating device of claim 3, wherein, ​ 5. The dual degree of freedom rotating device of claim 3, wherein, ​ 6. A dual degree of freedom rotating device according to any one of claims 2 to 5, wherein, ​ 7. The dual degree of freedom rotational device of claim 6, wherein, ​ 8. The dual degree of freedom rotational device of claim 1, wherein, ​ 9. The dual degree of freedom rotational device of claim 6, wherein, ​ ​ ​ ​ 10. The dual degree of freedom rotational device of claim 9, wherein, ​

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