Hollow rotating platform

Abstract

The utility model relates to the technical field of rotating platforms and discloses a hollow rotating platform which comprises a platform body, a transmission box is fixedly connected to the bottom of the platform body, an installation box is fixedly connected to the bottom of the transmission box, a protective cover plate is fixedly connected to the bottom of the installation box, and a rotating output ring is arranged in the middle of the platform body. A positioning cavity is formed in the middle of the mounting box, a plurality of positioning locking nuts located on the outer side of the positioning cavity are movably arranged in the mounting box in a sleeved mode, a driving gear is movably arranged in the positioning cavity in a sleeved mode, and the outer side of the driving gear is meshed with the positioning locking nuts. According to the utility model, due to the arrangement of the protective cover plate, the driving gear can be movably pressed in the mounting box under the cooperation of the positioning cavity, and then the driving gear is shifted to drive the plurality of positioning locking nuts to rotate at the same time, so that the plurality of positioning locking nuts are screwed with bolts at the same time, and thus the stepping or servo motor can be quickly mounted and connected.

Description

Technical Field

[0001] The utility model relates to the technical field of rotating platforms, and more specifically, to a hollow rotating platform. Background Art

[0002] The hollow rotary platform is mainly used in various rotary motion occasions such as CNC indexing devices, robot joints, the fourth machining axis of machine tools, military radars and automated production lines. It can replace direct drive motors and cam dividers, and combines high work efficiency, high precision, high rigidity and high cost performance. It is a revolutionary product in rotary motion mechanisms, achieving a balance between the two, with repeated positioning accuracy of ≤5 seconds. The motor is easily configured and has a stable load-bearing capacity. It can be divided at any angle with AC servo motors or stepper motors, which can not only meet the digital control that the divider cannot achieve, but also have positioning accuracy comparable to that of DD motors, which can greatly reduce costs.

[0003] When the hollow rotating platform is in use, the motor and its output shaft need to be fixedly connected in sequence, that is, the motor itself needs to be fixedly installed on the hollow tail of the rotating platform, and the output shaft needs to be inserted into the locking ring, and then the motor needs to be fixed with bolts, and then the output shaft needs to be locked with the locking ring. Before that, the fastening bolts need to be removed again, and after adapting the motor and the central control tail, multiple bolts need to be screwed in using special tools to ensure that the motor can be firmly connected to the hollow tail. This not only increases the workload of bolt rotation, but also reduces the motor installation efficiency, so it needs to be improved. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a hollow rotating platform.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hollow rotating platform, including a platform body, a transmission box is fixedly connected to the bottom of the transmission box, a mounting box is fixedly connected to the bottom of the mounting box, a protective cover is fixedly connected to the bottom of the mounting box, a rotating output ring is arranged in the middle, a positioning cavity is opened in the middle of the mounting box, a movable sleeve in the mounting box is provided with a plurality of positioning locking nuts located on the outside of the positioning cavity, a movable sleeve in the positioning cavity is provided with a driving gear, the outer side of the driving gear is meshed with a plurality of positioning locking nuts, the internal movable sleeve of the driving gear is connected with a positioning shaft fixedly connected to the bottom of the inner cavity of the positioning cavity, and an output shaft locking mechanism is arranged in the positioning shaft.

[0006] As a preferred technical solution of the utility model, a threaded hole is provided in the middle of the positioning locking nut, and a positioning hole located at the top of the positioning locking nut is opened inside the protective cover plate. The inner diameter of the upper end of the positioning hole is larger than the inner diameter of the positioning locking nut, and the inner diameter of the lower end of the positioning hole is the same as the inner diameter of the positioning locking nut.

[0007] As a preferred technical solution of the utility model, the output shaft locking mechanism includes a limiting shaft movably sleeved inside the positioning shaft, a through hole is provided in the middle of the limiting shaft, a positioning ring is provided at the top of the inner cavity of the through hole, and a plurality of locking arc blocks located at the bottom of the positioning ring and evenly distributed are movably installed in the through hole.

[0008] As a preferred technical solution of the utility model, a transmission shaft is movably sleeved inside the transmission box and the installation box, and the bottom of several locking arc blocks are slidably clamped on the transmission shaft. The extension line of the sliding trajectory of the locking arc block along the top of the transmission shaft passes through the axis of the transmission shaft, and the lower end of the transmission shaft is connected to the rotating output ring through a transmission dimension.

[0009] As a preferred technical solution of the utility model, the installation box is internally movably sleeved with a first transmission ring located below the positioning shaft, the inner side thread of the first transmission ring is sleeved with a second transmission ring, the interior of the second transmission ring is internally movably sleeved with a plurality of positioning rods, and the lower ends of the positioning rods are connected to the transmission shaft.

[0010] As a preferred technical solution of the utility model, the lower end of the outer surface of the locking arc block is a smooth inclined surface, the interior of the second transmission ring is fixedly sleeved with a bearing, the bearing is movably sleeved on the smooth inclined surface, the inner wall of the bearing is fixedly connected with a radial slider, the smooth inclined surface is provided with a radial slide groove, and the slider is movably sleeved in the slide groove.

[0011] As a preferred technical solution of the present utility model, the outer diameter dimensions of the drive gear and the first transmission ring are larger than the length dimension of the transmission box, the mounting box or the protective cover plate, and the outer diameter dimensions of the drive gear and the first transmission ring are smaller than the length dimension of the diagonal of the transmission box, the mounting box or the protective cover plate.

[0012] As an optimal technical solution of the utility model, a positioning protective pressure ring is movably embedded in the top of the protective cover plate, a plurality of pull grooves are opened on the top of the positioning protective pressure ring, and a connecting ring is provided at the bottom of the positioning protective pressure ring, and the connecting ring is threadedly sleeved on the top of the positioning shaft.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. Due to the setting of the protective cover plate, the utility model can press the driving gear into the installation box with the cooperation of the positioning cavity, and then turn the driving gear to drive a plurality of positioning locking nuts to rotate at the same time, and then make a plurality of positioning locking nuts screwed on with bolts at the same time, so that the stepping or servo motor can be quickly installed and connected.

[0015] 2. Due to the setting of the first transmission ring, the utility model facilitates the staff to manually control the movement of a plurality of locking arc blocks with the cooperation of the second transmission ring, etc., so as to lock the motor output shaft without relying on external special tools, thereby effectively improving the convenience of installation; and due to the setting of the slide groove and the slider, the plurality of locking arc blocks can follow the up and down movement of the second transmission ring under the action of the inclined surface to move closer to or farther from each other, thereby achieving the effect of locking or unlocking the output shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a front view of the utility model;

[0018] Figure 3 It is a schematic diagram of the transmission assembly of the utility model;

[0019] Figure 4 for Figure 3 A cross-sectional view of the front of the top structure of the middle transmission case;

[0020] Figure 5 for Figure 3 Cross-sectional view of the top of the middle locking arc block.

[0021] In the figure: 1. Platform body; 2. Transmission box; 3. Installation box; 4. Protective cover; 5. Rotating output ring; 6. Positioning locking nut; 7. Positioning cavity; 8. Driving gear; 9. Positioning shaft; 10. Limit shaft; 11. Positioning ring; 12. Locking arc block; 13. Transmission shaft; 14. First transmission ring; 15. Second transmission ring; 16. Positioning rod; 17. Positioning hole; 18. Positioning protective pressure ring; 19. Slot. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figures 1 to 5As shown, the utility model provides a hollow rotating platform, including a platform body 1, a transmission box 2 is fixedly connected to the bottom of the platform body 1, a mounting box 3 is fixedly connected to the bottom of the transmission box 2, a protective cover plate 4 is fixedly connected to the bottom of the mounting box 3, a rotating output ring 5 is arranged in the middle, a positioning cavity 7 is opened in the middle of the mounting box 3, a movable sleeve in the mounting box 3 is provided with a plurality of positioning locking nuts 6 located on the outside of the positioning cavity 7, a movable sleeve in the positioning cavity 7 is provided with a driving gear 8, the outer side of the driving gear 8 is meshed with the plurality of positioning locking nuts 6, the internal movable sleeve of the driving gear 8 is connected with a positioning shaft 9 fixedly connected to the bottom of the inner cavity of the positioning cavity 7, and an output shaft locking mechanism is arranged in the positioning shaft 9; due to the arrangement of the protective cover plate 4, the driving gear 8 can be movably pressed into the mounting box 3 with the cooperation of the positioning cavity 7, and then the driving gear 8 can be turned to drive the plurality of positioning locking nuts 6 to rotate at the same time, and then the plurality of positioning locking nuts 6 can be screwed on with bolts at the same time, so that the stepping or servo motor can be quickly installed and connected.

[0024] Among them, a threaded hole is set in the middle of the positioning locking nut 6, and a positioning hole 17 located at the top of the positioning locking nut 6 is opened inside the protective cover plate 4. The inner diameter size of the upper end of the positioning hole 17 is larger than the inner diameter size of the positioning locking nut 6, and the inner diameter size of the lower end of the positioning hole 17 is the same as the inner diameter size of the positioning locking nut 6; due to the setting of the positioning hole 17, it is ensured that the front end of the bolt can be smoothly inserted into the middle part of the positioning locking nut 6, and then the rotating positioning locking nut 6 can be screwed on with the cooperation of gravity.

[0025] Among them, the output shaft locking mechanism includes a limiting shaft 10 movably sleeved inside the positioning shaft 9, a through hole is arranged in the middle of the limiting shaft 10, a positioning ring 11 is arranged at the top of the inner cavity of the through hole, and a plurality of locking arc blocks 12 located at the bottom of the positioning ring 11 and evenly distributed are movably installed in the through hole; due to the setting of the positioning ring 11, it will not affect the movement of the plurality of locking arc blocks 12 in the limiting shaft 10, and at the same time it can ensure that the locking arc blocks 12 will not move up and down under the action of the inclined surface, thereby ensuring that under the action of the inclined surface, the plurality of locking arc blocks 12 can only follow the up and down movement of the second transmission ring 15 to approach or move away from each other.

[0026] Among them, a transmission shaft 13 is movably sleeved inside the transmission box 2 and the installation box 3, and the bottoms of several locking arc blocks 12 are slidably clamped on the transmission shaft 13. The extended line of the sliding trajectory of the locking arc block 12 along the top of the transmission shaft 13 passes through the axis of the transmission shaft 13, and the lower end of the transmission shaft 13 is connected to the rotating output ring 5 through the transmission size; due to the setting of the transmission shaft 13, the transmission shaft 13 can be driven to rotate rapidly through the output shaft and the locking arc block 12 during click operation, and then the rotating output ring 5 is driven to rotate through the transmission gear.

[0027] Among them, a first transmission ring 14 located below the positioning shaft 9 is movably sleeved inside the installation box 3, a second transmission ring 15 is threadedly sleeved on the inner side of the first transmission ring 14, a plurality of positioning rods 16 are movably sleeved inside the second transmission ring 15, and the lower ends of the positioning rods 16 are connected to the transmission shaft 13; due to the setting of the first transmission ring 14, with the cooperation of the second transmission ring 15, etc., it is convenient for the staff to manually control the movement of a plurality of locking arc blocks 12, thereby locking the motor output shaft, without relying on external special tools, effectively improving the convenience of installation.

[0028] Among them, the lower end of the outer surface of the locking arc block 12 is a smooth inclined surface, and a bearing is fixedly sleeved inside the second transmission ring 15. The bearing is movably sleeved on the smooth inclined surface. A radial slider is fixedly connected to the inner wall of the bearing. A radial slide groove is opened on the smooth inclined surface, and the slider is movably sleeved in the slide groove; due to the setting of the slide groove and the slider, under the action of the inclined surface, several locking arc blocks 12 can follow the up and down movement of the second transmission ring 15 to approach or move away from each other, thereby achieving the effect of locking or unlocking the output shaft.

[0029] Among them, the outer diameter dimensions of the driving gear 8 and the first transmission ring 14 are both larger than the length dimension of the transmission box 2, the mounting box 3 or the protective cover plate 4, and the outer diameter dimensions of the driving gear 8 and the first transmission ring 14 are smaller than the length dimension of the diagonal of the transmission box 2, the mounting box 3 or the protective cover plate 4.

[0030] Among them, a positioning protection pressure ring 18 is movably embedded in the top of the protection cover plate 4, a plurality of pull grooves 19 are opened on the top of the positioning protection pressure ring 18, and a connecting ring is provided at the bottom of the positioning protection pressure ring 18, and the connecting ring is threadedly sleeved on the top of the positioning shaft 9.

[0031] The working principle and use process of this utility model:

[0032] After the equipment is assembled as shown in the figure, the stepper or servo unit is installed to the bottom of the protective cover plate 4, that is, the central output shaft thereof is inserted between the several locking arc blocks 12 through the motor, and the front ends of the several bolts connected around it are inserted into the positioning holes 17, and the front ends are made in close contact with the top of the positioning locking nut 6 under the action of gravity, and then the driving gear 8 is rotated to drive the several positioning locking nuts 6 to rotate at the same time, so that the several bolts can be screwed into the corresponding positioning locking nuts 6, thereby quickly completing the installation of the motor; and then the first transmission ring 14 is rotated to move the second transmission ring 15 upward under the restriction of the positioning rod 16 on the second transmission ring 15, and then the several locking arc blocks 12 are gathered inward under the cooperation of the inclined surface at the lower end of the locking arc block 12, thereby locking the motor output shaft.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hollow rotating platform, comprising a platform body (1), characterized in that: The bottom of the platform body (1) is fixedly connected to a transmission box (2), the bottom of the transmission box (2) is fixedly connected to an installation box (3), the bottom of the installation box (3) is fixedly connected to a protective cover plate (4), a rotating output ring (5) is arranged in the middle of the platform body (1), a positioning cavity (7) is opened in the middle of the installation box (3), a movable sleeve inside the installation box (3) is provided with a plurality of positioning locking nuts (6) located outside the positioning cavity (7), a movable sleeve inside the positioning cavity (7) is provided with a driving gear (8), the outer side of the driving gear (8) is meshed with the plurality of positioning locking nuts (6), the inner movable sleeve of the driving gear (8) is connected to a positioning shaft (9) fixedly connected to the bottom of the inner cavity of the positioning cavity (7), and an output shaft locking mechanism is arranged inside the positioning shaft (9).

2. A hollow rotating platform according to claim 1, characterized in that: A threaded hole is provided in the middle of the positioning locking nut (6), and a positioning hole (17) located at the top of the positioning locking nut (6) is provided inside the protective cover plate (4). The inner diameter of the upper end of the positioning hole (17) is larger than the inner diameter of the positioning locking nut (6), and the inner diameter of the lower end of the positioning hole (17) is the same as the inner diameter of the positioning locking nut (6).

3. The hollow rotating platform according to claim 1, characterized in that: The output shaft locking mechanism comprises a limiting shaft (10) movably sleeved inside a positioning shaft (9), a through hole being arranged in the middle of the limiting shaft (10), a positioning ring (11) being arranged at the top of the inner cavity of the through hole, and a plurality of locking arc blocks (12) being movably installed in the through hole and being located at the bottom of the positioning ring (11) and evenly distributed.

4. A hollow rotating platform according to claim 3, characterized in that: A transmission shaft (13) is movably sleeved inside the transmission box (2) and the installation box (3); the bottoms of a plurality of locking arc blocks (12) are slidably clamped on the transmission shaft (13); an extension line of a sliding track of the locking arc blocks (12) along the top of the transmission shaft (13) passes through the axis of the transmission shaft (13); and the lower end of the transmission shaft (13) is transmission-connected to a rotating output ring (5) via a transmission dimension.

5. The hollow rotating platform according to claim 3, characterized in that: The installation box (3) has a first transmission ring (14) movably sleeved inside and located below the positioning shaft (9); the first transmission ring (14) has a second transmission ring (15) threadedly sleeved on its inner side; the second transmission ring (15) has a plurality of positioning rods (16) movably sleeved inside; the lower ends of the positioning rods (16) are connected to the transmission shaft (13).

6. The hollow rotating platform according to claim 5, characterized in that: The lower end of the outer surface of the locking arc block (12) is a smooth inclined surface, the interior of the second transmission ring (15) is fixedly sleeved with a bearing, the bearing is movably sleeved on the smooth inclined surface, the inner wall of the bearing is fixedly connected with a radial slider, the smooth inclined surface is provided with a radial slide groove, and the slider is movably sleeved in the slide groove.

7. The hollow rotating platform according to claim 5, characterized in that: The outer diameters of the driving gear (8) and the first transmission ring (14) are both larger than the length of the transmission box (2), the mounting box (3) or the protective cover (4), and the outer diameters of the driving gear (8) and the first transmission ring (14) are smaller than the length of the diagonal of the transmission box (2), the mounting box (3) or the protective cover (4).

8. The hollow rotating platform according to claim 1, characterized in that: A positioning protective pressure ring (18) is movably embedded in the top of the protective cover plate (4), a plurality of pull grooves (19) are provided on the top of the positioning protective pressure ring (18), and a connecting ring is provided at the bottom of the positioning protective pressure ring (18), and the connecting ring is threadedly sleeved on the top of the positioning shaft (9).

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