Lifting device for planetarium

Abstract

The utility model relates to a lifting device for a planetarium, and belongs to the technical field of astronomical instruments, the lifting device comprises two fixing rings, the two fixing rings are arranged in the vertical direction, a plurality of supporting rods are fixedly arranged between the two fixing rings, the multiple supporting rods are uniformly arranged in the circumferential direction of the fixing rings, and the supporting rods are arranged in the vertical direction of the fixing rings. A mounting ring is arranged between the two fixing rings in a sliding mode, the mounting ring is used for mounting the planetarium, the mounting ring slides in the direction parallel to the length direction of the supporting rod, and the lifting device further comprises a driving device used for driving the mounting ring to slide. The planetarium has the advantage that the height of the planetarium can be conveniently adjusted.

Description

Technical Field

[0001] The present application relates to the technical field of astronomical instruments, and in particular to a lifting device for a planetarium. Background Art

[0002] A planetarium is a popular science instrument that simulates starry sky performances, also known as a fake sky instrument. It demonstrates various celestial bodies that people see at different longitudes and latitudes on the earth on a hemispherical sky screen, such as the rise and fall of the sun, the movement of planets among the stars, and the precession of the earth's rotation axis. It can demonstrate the movement of major stars, planets, star clusters, and nebulae in the universe, the rising and setting of the sun, and the waxing and waning of the moon in a relatively short period of time, which is intuitive, realistic, vivid, and interesting.

[0003] A planetarium usually consists of a stand and a telescope (or other observation equipment) that can be moved up and down. In order to observe celestial bodies in different locations, the planetarium needs to be able to change the elevation angle (up and down direction) to adapt to different observation needs. Therefore, the planetarium is usually designed to be liftable, and the elevation angle can be adjusted by corresponding mechanical devices (such as cylinders or hydraulic cylinders). This lifting function allows observers to adjust the planetarium to a suitable height as needed in order to better observe celestial bodies. In the fields of astronomy, astrophysics, and celestial navigation, the lifting function of the planetarium is very important, which allows observers to flexibly choose the observation position and angle to obtain more accurate observation data.

[0004] However, the sizes of planetariums are different, so the heights at which the planetariums are installed are also different, and the above-mentioned planetarium cannot directly adjust the height of the planetarium, so that when customers purchase this planetarium, they can only reinstall and adjust the height of the planetarium according to the size of the customer's planetarium to make the planetarium present the best image when projecting. Utility Model Content

[0005] In order to facilitate the adjustment of the height of a planetarium, the present application provides a lifting device for a planetarium.

[0006] The present application provides a lifting device for a planetarium using the following technical solution:

[0007] A lifting device for a planetarium comprises two fixing rings, which are arranged vertically; a supporting rod is fixedly arranged between the two fixing rings; a plurality of supporting rods are provided, and the plurality of supporting rods are evenly arranged along the circumference of the fixing rings; a mounting ring is slidably arranged between the two fixing rings, and the mounting ring is used for mounting the planetarium, and the mounting ring slides in a direction parallel to the length of the supporting rods; the lifting device also comprises a driving device for driving the mounting ring to slide.

[0008] Optionally, the driving device includes a motor arranged on a fixing ring, the length of the motor output shaft is perpendicular to the length direction of the support rod, the driving device also includes a lead screw rotatably arranged between two fixing rings, the length direction of the lead screw is parallel to the length direction of the support rod, the mounting ring is threadedly connected to the lead screw, and the driving device also includes a commutator, which is used for the motor to drive the lead screw to rotate.

[0009] Optionally, the reversing member includes a first bevel gear arranged on the output shaft of the motor and a second bevel gear coaxially arranged on the lead screw, and the first bevel gear and the second bevel gear are meshed with each other.

[0010] Optionally, three lead screws are provided, and the three lead screws are arranged at intervals, and the lifting device further includes a distribution member, and the distribution member is used for the motor to drive the three lead screws to rotate simultaneously.

[0011] Optionally, the distribution member includes a distribution box arranged in the middle of the fixed ring and a third bevel gear arranged in the distribution box, the third bevel gears correspond to the number of lead screws one by one, the motor output shaft enters the distribution box, the first bevel gear is located in the distribution box, the three third bevel gears are arranged in a gate shape, the first bevel gear is meshed with two of the third bevel gears, and any third bevel gear meshed with the first bevel gear is meshed with the adjacent third bevel gear; a drive rod is rotatably arranged on the distribution box, the length directions of adjacent drive rods are perpendicular to each other, the drive rod is coaxially arranged on the third bevel gear, the second bevel gear includes a fourth bevel gear coaxially arranged on the lead screw and a fifth bevel gear arranged on the drive rod, the fourth bevel gear is meshed with the fifth bevel gear.

[0012] Optionally, a mounting box is provided on the fixing ring, and the first bevel gear and the second bevel gear are both located in the mounting box.

[0013] Optionally, the lifting device further comprises a surrounding plate, which is columnar and surrounds the support rod. The surrounding plate is fixedly arranged on the support rod, and is used to surround the mounting ring into the column.

[0014] Optionally, the lifting device further comprises a surrounding plate, which is columnar and surrounds the support rod. The surrounding plate is fixedly arranged on the support rod, and is used to surround the mounting ring into the column.

[0015] Optionally, a stopper is provided on the slide bar, and the stopper is fixedly provided on the slide bar, and a height of the stopper from the bottom surface fixing ring is greater than or equal to a height of the motor.

[0016] Optionally, a mounting frame is fixedly disposed on the inner ring of the fixing ring at the bottom, and the motor and the distribution box are both fixedly disposed on the mounting frame.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] 1. When installing the planetarium, install the fixing ring at the bottom at the designed position, and then fix the planetarium on the fixing ring. When the height of the planetarium needs to be adjusted, the fixing ring is driven to slide by the driving device, and the sliding of the fixing ring drives the planetarium to slide, and the planetarium slides to adjust the height of the planetarium, thereby facilitating the installation of the planetarium, and the operation is simple and convenient;

[0019] 2. Furthermore, the height of the planetarium is adjusted by the driving device, thereby facilitating the adjustment of the height of the planetarium to demonstrate celestial phenomena. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of a lifting device for a planetarium according to an embodiment of the present application;

[0021] Figure 2 It is a schematic diagram of the internal structure of a lifting device for a planetarium according to an embodiment of the present application;

[0022] Figure 3 It is a structural schematic diagram of a driving device in a lifting device for a planetarium according to an embodiment of the present application.

[0023] Description of reference numerals: 1. fixing ring; 2. support rod; 3. mounting ring;

[0024] 4. Driving device; 41. Motor; 42. Lead screw; 43. First bevel gear; 44. Second bevel gear; 441. Fourth bevel gear; 442. Fifth bevel gear; 45. Distribution box; 46. Third bevel gear; 47. Driving rod;

[0025] 5. Mounting box; 6. Mounting rod; 7. Sliding rod; 8. Surrounding plate. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-3 This application is described in further detail.

[0027] The present application embodiment discloses a lifting device for a planetarium. Figure 1 and Figure 2The lifting device of the planetarium includes two fixing rings 1, the cross sections of the two fixing rings 1 are both circular, the two fixing rings 1 are arranged vertically, a support rod 2 is fixedly arranged between the two fixing rings 1, the support rod 2 is supported by square steel and welded to the two fixing rings 1, a plurality of support rods 2 are provided, and the plurality of support rods 2 are evenly arranged along the circumference of the fixing rings 1, a mounting ring 3 is slidably arranged between the two fixing rings 1, the mounting ring 3 is used to install the planetarium, and the mounting ring 3 slides in a direction parallel to the length of the support rod 2, and the lifting device also includes a driving device 4 for driving the mounting ring 3 to slide.

[0028] When installing the planetarium, the fixing ring 1 at the bottom is installed at the designed position, and then the planetarium is fixed on the mounting ring 3. When the height of the planetarium needs to be adjusted, the mounting ring 3 is driven to slide by the driving device 4, and the sliding of the mounting ring 3 drives the planetarium to slide, and the planetarium slides to adjust the height of the planetarium, thereby facilitating the installation of the planetarium, and the operation is simple and convenient.

[0029] Reference Figure 2 and Figure 3 In the embodiment of the present application, the driving device 4 includes a motor 41 arranged on the fixing ring 1, the motor 41 is located on the bottom fixing ring 1, the length of the output shaft of the motor 41 is perpendicular to the length direction of the support rod 2, the driving device 4 also includes a lead screw 42 rotatably arranged between the two fixing rings 1, further, both ends of the lead screw 42 are fixedly provided with bearings, the outer ring of the bearing is fixedly provided on the fixing ring 1, the length direction of the lead screw 42 is parallel to the length direction of the support rod 2, the mounting ring 3 is threadedly connected to the lead screw 42, and the driving device 4 also includes a commutator, which is used for the motor 41 to drive the lead screw 42 to rotate;

[0030] Reference Figure 2 and Figure 3 The reversing member includes a first bevel gear 43 disposed on the output shaft of the motor 41 and a second bevel gear 44 coaxially disposed on the lead screw 42 , and the first bevel gear 43 and the second bevel gear 44 are meshed with each other.

[0031] When adjusting the height of the mounting ring 3, start the motor 41, the motor 41 drives the first bevel gear 43 to rotate, the rotation of the first bevel gear 43 drives the second bevel gear 44 to rotate, the rotation of the second bevel gear 44 drives the lead screw 42 to rotate, and the rotation of the lead screw 42 drives the mounting ring 3 to slide, the operation is simple and convenient; at the same time, under the action of the lead screw 42, it is convenient to fix the mounting ring 3 in the position after sliding.

[0032] Reference Figure 2 and Figure 3Furthermore, a mounting box 5 is fixedly provided on the fixing ring 1, and the first bevel gear 43 and the second bevel gear 44 are both located in the mounting box 5; under the action of the mounting box 5, the first bevel gear 43 and the second bevel gear 44 are accommodated therein, reducing the influence of the external environment on the first bevel gear 43 and the second bevel gear 44, thereby facilitating the adjustment of the height of the mounting ring 3; further, lubricating oil is contained in the mounting box 5 to facilitate the transmission of the first bevel gear 43 and the second bevel gear 44.

[0033] Reference Figure 2 and Figure 3 In order to improve the stability of the mounting ring 3 and the planetarium, three lead screws 42 are provided, and the three lead screws 42 are arranged at intervals and in a triangular arrangement. The lifting device also includes a distribution member, and the distribution member is used for the motor 41 to drive the three lead screws 42 to rotate simultaneously. The distribution member includes a distribution box 45 arranged in the middle of the fixed ring 1 and a third bevel gear 46 arranged in the distribution box 45. The number of the third bevel gears 46 and the lead screws 42 corresponds one to one. The output shaft of the motor 41 enters the distribution box 45, and the first bevel gear 43 is located in the distribution box 45. The three third bevel gears 46 are arranged in a gate shape. The first bevel gear 43 is meshed with the two third bevel gears 46, and any third bevel gear 46 meshed with the first bevel gear 43 is meshed with the adjacent third bevel gear 46;

[0034] Reference Figure 2 and Figure 3 A driving rod 47 is rotatably provided on the distribution box 45, and the length directions of adjacent driving rods 47 are perpendicular to each other. The driving rod 47 is coaxially provided on the third bevel gear 46. The second bevel gear 44 includes a fourth bevel gear 441 coaxially provided on the lead screw 42 and a fifth bevel gear 442 provided on the driving rod 47, and the fourth bevel gear 441 is meshed with the fifth bevel gear 442.

[0035] When the height of the mounting ring 3 is adjusted, the motor 41 is started, and the motor 41 drives the first bevel gear 43 to rotate. The rotation of the first bevel gear 43 drives the third bevel gear 46 to rotate. The third bevel gear 46 drives the adjacent third bevel gear 46 to rotate. The rotation of the third bevel gear 46 drives the driving rod 47 to rotate. The rotation of the driving rod 47 drives the fifth bevel gear 442 to rotate. The rotation of the fifth bevel gear 442 drives the fourth bevel gear 441 to rotate. The rotation of the fourth bevel gear 441 drives the lead screw 42 to rotate. The operation is simple and convenient.

[0036] Reference Figure 2 and Figure 3In other embodiments of the present application, the second bevel gear 44 can be replaced by a worm coaxially arranged on the drive rod 47 and a worm wheel coaxially arranged on the lead screw 42, and the worm and the worm wheel are meshed with each other; the rotation of the drive rod 47 drives the worm to rotate, the rotation of the worm drives the worm wheel to rotate, and the rotation of the worm wheel drives the lead screw 42 to rotate, which is simple and convenient to operate; and at the same time it is convenient to fix the lead screw 42 at the angle after rotation.

[0037] Reference Figure 2 and Figure 3 In the embodiment of the present application, the inner ring of the fixing ring 1 at the bottom is fixed with a mounting frame, the motor 41 and the distribution box 45 are fixedly set on the mounting frame, the mounting frame includes a plurality of mounting rods 6 welded on the circular ring, the mounting rods 6 are all located in the same plane, and the motor 41 and the distribution box are fixed on the mounting rods 6.

[0038] Reference Figure 2 and Figure 3 In order to further improve the stability of the mounting ring 3, a sliding rod 7 is further provided between the two fixing rings 1. The length direction of the sliding rod 7 is parallel to the length direction of the supporting rod 2, and the mounting ring 3 is slidably passed through the sliding rod 7. Under the action of the sliding rod 7, the mounting ring 3 is supported more evenly, thereby improving the stability of the mounting ring 3.

[0039] Reference Figure 2 and Figure 3 Furthermore, in order to reduce the possibility of the mounting ring 3 crimping the motor 41, a stopper is provided on the slide rod 7. The slider is disc-shaped and the stopper is fixed on the slide rod 7. The height of the stopper from the bottom surface fixing ring 1 is greater than or equal to the height of the motor 41. Under the action of the stopper, the sliding distance stroke of the mounting ring 3 is limited, thereby reducing the possibility of the mounting ring 3 crimping the motor 41.

[0040] Reference Figure 2 and Figure 3 In the embodiment of the present application, the lifting device also includes a surrounding plate 8, which is columnar around the support rod 2. The surrounding plate 8 is fixed on the support rod 2, and the surrounding plate 8 is used to surround the mounting ring 3 into the column; under the action of the surrounding plate 8, the lifting device is surrounded, thereby improving the safety of the lifting device.

[0041] The implementation principle of a lifting device for a planetarium in the embodiment of the present application is as follows:

[0042] When installing the planetarium, the fixing ring 1 at the bottom is installed at the designed position, and then the planetarium is fixed on the mounting ring 3. When the height of the planetarium needs to be adjusted, the motor 41 is started, and the motor 41 drives the first bevel gear 43 to rotate. The rotation of the first bevel gear 43 drives the third bevel gear 46 to rotate. The third bevel gear 46 drives the adjacent third bevel gear 46 to rotate. The rotation of the third bevel gear 46 drives the driving rod 47 to rotate. The driving rod 47 drives the fifth bevel gear 442 to rotate. The fifth bevel gear 442 drives the fourth bevel gear 441 to rotate. The fourth bevel gear 441 drives the lead screw 42 to rotate. The rotation of the lead screw 42 drives the mounting ring 3 to slide. The sliding of the mounting ring 3 drives the planetarium to slide. The planetarium slides to adjust the height of the planetarium, thereby facilitating the installation of the planetarium. The operation is simple and convenient.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A lifting device for a planetarium, characterized in that: The invention comprises two fixing rings (1), the two fixing rings (1) are arranged vertically, a support rod (2) is fixedly arranged between the two fixing rings (1), a plurality of support rods (2) are arranged, and the plurality of support rods (2) are evenly arranged along the circumference of the fixing ring (1), a mounting ring (3) is slidably arranged between the two fixing rings (1), the mounting ring (3) is used to mount a planetarium, and the mounting ring (3) slides in a direction parallel to the length of the support rod (2), and the lifting device further comprises a driving device (4) for driving the mounting ring (3) to slide.

2. A lifting device for a planetarium according to claim 1, characterized in that: The driving device (4) comprises a motor (41) arranged on a fixing ring (1), the length of the output shaft of the motor (41) being perpendicular to the length direction of the support rod (2), the driving device (4) further comprises a lead screw (42) rotatably arranged between the two fixing rings (1), the length direction of the lead screw (42) being parallel to the length direction of the support rod (2), the mounting ring (3) being threadedly connected to the lead screw (42), and the driving device (4) further comprises a commutator, the commutator being used for the motor (41) to drive the lead screw (42) to rotate.

3. A lifting device for a planetarium according to claim 2, characterized in that: The reversing member comprises a first bevel gear (43) arranged on the output shaft of the motor (41) and a second bevel gear (44) arranged on the lead screw (42), and the first bevel gear (43) and the second bevel gear (44) are meshed with each other.

4. A lifting device for a planetarium according to claim 3, characterized in that: The lead screws (42) are provided in three numbers, and the three lead screws (42) are arranged at intervals. The lifting device further comprises a distribution member, and the distribution member is used for the motor (41) to drive the three lead screws (42) to rotate simultaneously.

5. A lifting device for a planetarium according to claim 4, characterized in that: The distribution member comprises a distribution box (45) arranged in the middle of the fixing ring (1) and a third bevel gear (46) arranged in the distribution box (45); the number of the third bevel gears (46) corresponds to the number of the lead screws (42); the output shaft of the motor (41) enters the distribution box (45); the first bevel gear (43) is located in the distribution box (45); the three third bevel gears (46) are arranged in a gate shape; the first bevel gear (43) and the two third bevel gears (46) are meshed with each other; any one of the third bevel gears (46) meshed with the first bevel gear (43) is meshed with the second bevel gear (46); The third bevel gear (46) is meshed with the adjacent third bevel gear (46); a driving rod (47) is rotatably arranged on the distribution box (45), and the length directions of the adjacent driving rods (47) are perpendicular to each other. The driving rod (47) is coaxially arranged on the third bevel gear (46); the second bevel gear (44) includes a fourth bevel gear (441) coaxially arranged on the lead screw (42) and a fifth bevel gear (442) arranged on the driving rod (47); the fourth bevel gear (441) is meshed with the fifth bevel gear (442).

6. A lifting device for a planetarium according to claim 3, characterized in that: The fixing ring (1) is provided with a mounting box (5), and the first bevel gear (43) and the second bevel gear (44) are both located in the mounting box (5).

7. A lifting device for a planetarium according to claim 1, characterized in that: The lifting device also includes a surrounding plate (8), which surrounds the support rod (2) in a columnar shape. The surrounding plate (8) is fixedly arranged on the support rod (2), and the surrounding plate (8) is used to surround the mounting ring (3) into the columnar shape.

8. A lifting device for a planetarium according to claim 4, characterized in that: A sliding rod (7) is also provided between the two fixing rings (1), the length direction of the sliding rod (7) is parallel to the length direction of the supporting rod (2), and the mounting ring (3) is slidably arranged on the sliding rod (7).

9. A lifting device for a planetarium according to claim 8, characterized in that: The slide bar (7) is provided with a stopper, the stopper is fixedly arranged on the slide bar (7), and the height of the stopper from the bottom surface fixing ring (1) is greater than or equal to the height of the motor (41).

10. The lifting device for a planetarium according to claim 5, characterized in that: The inner ring of the fixing ring (1) at the bottom is fixedly provided with a mounting frame, and the motor (41) and the distribution box (45) are both fixedly provided on the mounting frame.

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