A device for self-locking of a rotary table during power failure

Abstract

The utility model relates to a kind of device of rotary table power-off self-locking, belong to motor direct drive rotary table field. Including: limit fixed mechanism, electromagnetic conversion mechanism and rotary table magnet, the limit fixed mechanism fixedly arranged, the electromagnetic conversion mechanism is arranged in the inside of the limit fixed mechanism, the rotary table magnet is fixedly installed on the rotating part of rotary table, the electromagnetic conversion mechanism is spaced apart or adsorbed by electrification or power-off with the rotary table magnet;The limit fixed mechanism includes cup core, the cup core is polygonal rod structure, the electromagnetic conversion mechanism is movably sleeved on the cup core along the axial direction of the limit fixed mechanism.The utility model is favorable to self-locking when rotary table power-off, avoid the phenomenon that rotary table is produced unconstrained rotation when power-off due to external disturbance.

Description

Technical Field

[0001] This utility model relates to the field of direct-drive turntables, and in particular to a device for self-locking of a turntable when power is off. Background Technology

[0002] To ensure transmission accuracy, existing turntables often employ direct motor drive, meaning the turntable's connecting shaft is directly connected to the motor's output shaft, omitting other transmission mechanisms between the motor's output shaft and the turntable's connecting shaft. This directly transmits the motor's power to the turntable, driving its rotation. However, when the motor is de-energized, the magnetic torque between the stator and rotor disappears, the motor's enable is canceled, and the motor cannot provide an effective resistance torque to prevent the turntable from being disturbed by external torques. In other words, when the motor is de-energized, the turntable will rotate unrestrained due to external disturbances. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a device for self-locking of a turntable when power is off, so as to solve the above-mentioned problem.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A device for a turntable to self-lock upon power failure includes: a limiting and fixing mechanism, an electromagnetic conversion mechanism, and a turntable magnet. The limiting and fixing mechanism is fixedly installed, the electromagnetic conversion mechanism is installed inside the limiting and fixing mechanism, and the turntable magnet is fixedly installed on the rotating part of the turntable. The electromagnetic conversion mechanism is spaced apart from or attracted to the turntable magnet by being energized or de-energized. The limiting and fixing mechanism includes a cup core, which is a polygonal rod-shaped structure. The electromagnetic conversion mechanism is movably sleeved on the cup core along the axial direction of the limiting and fixing mechanism.

[0005] The beneficial effects of this utility model are: the electromagnetic conversion mechanism is movably sleeved on the cup core along the axial direction of the limiting and fixing mechanism, which is beneficial to the turntable magnet using magnetic force to attract the electromagnetic conversion mechanism when the electromagnetic conversion mechanism is de-energized, while the polygonal rod-shaped cup core limits the rotation of the electromagnetic conversion mechanism in the circumferential direction, thus avoiding the phenomenon of the turntable rotating without restraint due to external disturbances when the power is off.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the limiting and fixing mechanism also includes a fixed cup holder, the cup core is disposed inside the fixed cup holder along the axial direction of the fixed cup holder, one end of the cup core is fixedly connected to the inner wall of the fixed cup holder, the electromagnetic conversion mechanism is disposed inside the fixed cup holder, and the electromagnetic conversion mechanism is movably sleeved on the cup core along the axial direction of the fixed cup holder.

[0008] The beneficial effect of adopting the above-mentioned further solution is that the cup core is set inside the fixed cup seat along the axial direction of the fixed cup seat, and one end of the cup core is fixedly connected to the inner wall of the fixed cup seat, which is beneficial to provide guidance for the electromagnetic conversion mechanism to move along the axial direction of the cup core.

[0009] Furthermore, the fixed cup holder is a cylindrical structure with an open left end, and one end of the cup core is fixedly connected to the right end of the inner wall of the fixed cup holder.

[0010] The beneficial effects of adopting the above-mentioned further solution are: the fixed cup holder is a cylindrical structure with an open left end, which is conducive to forming a closed right end, thereby providing support for the installation of the cup core and providing protection for the operation of the electromagnetic conversion mechanism.

[0011] Furthermore, the left end of the fixed cup holder is provided with a cup rim, which is fixedly installed on the non-rotating part of the turntable.

[0012] The beneficial effect of adopting the above-mentioned further solution is that the rim of the cup facilitates the provision of an installation position for the connection and fixation between the fixed cup holder and the non-rotating part of the turntable.

[0013] Furthermore, the electromagnetic conversion mechanism includes a moving iron core and a coil, the coil being wound around the outer wall of the moving iron core along the axial direction of the moving iron core, and the moving iron core being sleeved on the cup core.

[0014] The beneficial effects of adopting the above-mentioned further scheme are: the coil is wound around the outer wall of the moving iron core along the axial direction of the moving iron core, which is conducive to generating or canceling the magnetic force of the moving iron core by turning the power on and off. The iron core is sleeved on the cup core, which is conducive to providing guidance for the turntable magnet to attract the moving iron core after the coil is de-energized and the magnetic force of the moving iron core disappears.

[0015] Furthermore, the moving iron core is provided with a sliding hole in the axial direction. The sliding hole is a polygonal through hole, and the cup core is adapted to be disposed in the sliding hole.

[0016] The beneficial effects of adopting the above-mentioned further solution are: the sliding hole is a polygonal through hole, which is conducive to matching the polygonal rod-shaped structure of the cup core, thereby limiting the rotation of the electromagnetic conversion mechanism in the circumferential direction and avoiding the phenomenon that the turntable will rotate without restraint due to external disturbances when the power is cut off.

[0017] Furthermore, the coil is connected to the power supply of the motor that drives the rotating part of the turntable to rotate.

[0018] The beneficial effects of adopting the above-mentioned further solution are: the connection between the coil and the power supply of the motor that drives the rotating part of the turntable is conducive to synchronizing the on and off of the coil with the on and off of the motor, so that when the motor is de-energized, the coil is de-energized simultaneously, thereby causing the turntable magnet to attract the moving iron core, and in conjunction with the polygonal rod-shaped cup core, limiting the circumferential rotation of the moving iron core, ultimately achieving circumferential rotation limitation of the turntable, and avoiding the phenomenon of the turntable rotating without restraint due to external disturbances when the power is off.

[0019] Furthermore, when the coil is energized, the electromagnetic conversion mechanism generates a magnetic field, and the magnetic poles of the electromagnetic conversion mechanism and the turntable magnet are in the same direction.

[0020] The beneficial effect of adopting the above-mentioned further scheme is that the magnetic poles of the electromagnetic conversion mechanism and the turntable magnet are in the same direction at the opposite end, which is conducive to using the principle of like poles repulsion to separate the moving iron core from the turntable magnet, so that the turntable magnet does not interfere with the moving iron core when the turntable rotates.

[0021] Furthermore, when the coil is de-energized, the turntable magnet attracts the moving iron core.

[0022] The beneficial effects of adopting the above-mentioned further scheme are: when the coil is de-energized, the magnetic field disappears, and the turntable magnet uses magnetic attraction to drive the moving iron core to move along the cup core, thereby causing the turntable magnet to attract the moving iron core. At the same time, in conjunction with the polygonal structure of the cup core, the rotation of the moving iron core in the circumferential direction is limited, ultimately preventing the turntable from rotating without restraint due to external disturbances.

[0023] Furthermore, the turntable magnet is fixedly mounted on the turntable connecting shaft.

[0024] The beneficial effect of adopting the above-mentioned further scheme is that it helps to make the turntable magnet move synchronously with the turntable, thereby limiting the movement of the turntable by restricting the turntable magnet. Attached Figure Description

[0025] Figure 1 This is a schematic diagram showing the overall structure after being cut open according to an embodiment of the present utility model; Figure 2 A front view of the overall structure provided in this embodiment of the utility model when powered on.

[0026] in, Figure 1 The double-headed arrows indicate the installation orientation of each component.

[0027] The attached diagram lists the components represented by each number as follows: 1. Limiting and fixing mechanism; 2. Electromagnetic conversion mechanism; 3. Turntable magnet; 4. Turntable connecting shaft; 11. Fixed cup holder; 12. Cup core; 21. Moving iron core; 22. Coil; 111. Cup rim; 211. Sliding hole. Detailed Implementation

[0028] The principles and features of this utility model are described below. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0029] like Figure 1 and Figure 2 As shown, this embodiment provides a turntable power-off self-locking device, including: a limiting and fixing mechanism 1, an electromagnetic conversion mechanism 2, and a turntable magnet 3. The limiting and fixing mechanism 1 is fixedly installed, the electromagnetic conversion mechanism 2 is installed inside the limiting and fixing mechanism 1, and the turntable magnet 3 is fixedly installed on the rotating part of the turntable. The electromagnetic conversion mechanism 2 is spaced apart from or attracted to the turntable magnet 3 by being energized or de-energized. The limiting and fixing mechanism 1 includes a cup core 12, which is a polygonal rod-shaped structure. The electromagnetic conversion mechanism 2 is movably sleeved on the cup core 12 along the axial direction of the limiting and fixing mechanism 1.

[0030] It should be noted that in the preferred embodiment of this utility model, the cup core 12 is a regular polygon with a small number of sides, such as triangle, quadrilateral, pentagon, or hexagon, and with relatively obvious circumferential edges, which is beneficial to enhancing the limiting ability of the electromagnetic conversion mechanism in the circumferential direction.

[0031] The beneficial effects of this utility model are: the electromagnetic conversion mechanism is movably sleeved on the cup core along the axial direction of the limiting and fixing mechanism, which is beneficial to the turntable magnet using magnetic force to attract the electromagnetic conversion mechanism when the electromagnetic conversion mechanism is de-energized, while the polygonal rod-shaped cup core limits the rotation of the electromagnetic conversion mechanism in the circumferential direction, thus avoiding the phenomenon of the turntable rotating without restraint due to external disturbances when the power is off.

[0032] Preferred, such as Figure 1 As shown, the limiting and fixing mechanism 1 also includes a fixed cup holder 11, the cup core 12 is disposed inside the fixed cup holder 11 along the axial direction of the fixed cup holder 11, one end of the cup core 12 is fixedly connected to the inner wall of the fixed cup holder 11, and the electromagnetic conversion mechanism 2 is disposed inside the fixed cup holder 11 and is movably sleeved on the cup core 12 along the axial direction of the fixed cup holder 11.

[0033] The advantages of adopting the above preferred solution are: the cup core is arranged inside the fixed cup seat along the axial direction of the fixed cup seat, and one end of the cup core is fixedly connected to the inner wall of the fixed cup seat, which is beneficial to provide guidance for the electromagnetic conversion mechanism to move along the axial direction of the cup core.

[0034] Preferred, such as Figure 1As shown, the fixed cup holder 11 is a cylindrical structure with an open left end, and one end of the cup core 12 is fixedly connected to the right end of the inner wall of the fixed cup holder 11.

[0035] It should be noted that, in this embodiment, the right end of the inner wall of the fixed cup holder 11 refers to the closed end of the two ends of the fixed cup holder 11.

[0036] The advantages of adopting the above preferred solution are: the fixed cup holder is a cylindrical structure with an open left end, which is conducive to forming a closed right end, thereby providing support for the installation of the cup core and protecting the operation of the electromagnetic conversion mechanism.

[0037] Preferred, such as Figure 1 As shown, the left end of the fixed cup holder 11 is provided with a cup rim 111, which is fixedly installed on the non-rotating part of the turntable.

[0038] It should be noted that, in this embodiment, the left end of the fixed cup holder 11 refers to the end of the fixed cup holder 11 with an opening at one of its two ends; In a preferred embodiment of this utility model, the fixed cup holder 11 can be directly fixedly installed on the non-rotating part of the turntable.

[0039] The advantage of adopting the above preferred solution is that the rim of the cup is conducive to providing an installation position for the connection and fixation between the fixed cup seat and the non-rotating part of the turntable.

[0040] Preferred, such as Figure 1 As shown, the electromagnetic conversion mechanism 2 includes a moving iron core 21 and a coil 22. The coil 22 is wound around the outer wall of the moving iron core 21 along the axial direction of the moving iron core 21. The moving iron core 21 is sleeved on the cup core 12.

[0041] The advantages of adopting the above preferred scheme are: the coil is wound around the outer wall of the moving iron core along the axial direction of the moving iron core, which is conducive to generating or canceling the magnetic force of the moving iron core by turning the power on and off. The iron core is sleeved on the cup core, which is conducive to providing guidance for the turntable magnet to attract the moving iron core after the coil is de-energized and the magnetic force of the moving iron core disappears.

[0042] Preferred, such as Figure 1 As shown, the moving iron core 21 is provided with a sliding hole 211 in the axial direction. The sliding hole 211 is a polygonal through hole, and the cup core 12 is adapted to be disposed in the sliding hole 211.

[0043] The advantages of adopting the above preferred solution are: the sliding hole is a polygonal through hole, which is conducive to matching the polygonal rod-shaped structure of the cup core, thereby limiting the rotation of the electromagnetic conversion mechanism in the circumferential direction and avoiding the phenomenon that the turntable will rotate without restraint due to external disturbances when the power is off.

[0044] Preferably, the coil 22 is connected to the power supply of the motor that drives the rotating part of the turntable to rotate.

[0045] The advantages of adopting the above-mentioned preferred solution are: the connection between the coil and the power supply of the motor that drives the rotating part of the turntable is conducive to synchronizing the on and off of the coil with the on and off of the motor, so that when the motor is de-energized, the coil is de-energized simultaneously, thereby causing the turntable magnet to attract the moving iron core, and in conjunction with the polygonal rod-shaped cup core, limiting the circumferential rotation of the moving iron core, ultimately achieving circumferential rotation limitation of the turntable, and avoiding the phenomenon of the turntable rotating without restraint due to external disturbances when the power is off.

[0046] Preferably, when the coil 22 is energized, the electromagnetic conversion mechanism 2 generates a magnetic field, and the magnetic poles of the electromagnetic conversion mechanism 2 and the turntable magnet 3 are in the same direction at opposite ends.

[0047] It should be noted that the electromagnetic conversion mechanism 2 and the turntable magnet 3 have the same magnetic pole direction at their opposite ends. This means that the ends of the moving iron core 21 and the turntable magnet 3 that are close to each other are both N poles or S poles, thereby generating a repulsive force. This causes the moving iron core 21 and the turntable magnet 3 to be spaced apart, so that the turntable and the turntable magnet 3 fixedly installed on the turntable do not interfere with the moving iron core 21 when they rotate.

[0048] The advantages of adopting the above preferred scheme are: the magnetic poles of the electromagnetic conversion mechanism and the turntable magnet are in the same direction at the opposite end, which is beneficial to use the principle of like poles repulsion to separate the moving iron core from the turntable magnet, so that the turntable magnet does not interfere with the moving iron core when the turntable rotates.

[0049] Preferably, when the coil 22 is de-energized, the turntable magnet 3 attracts the moving iron core 21.

[0050] It should be noted that in the technical solution of this utility model, the moving iron core 21 needs to be able to generate a magnetic field when the coil 22 is energized, and lose the magnetic field when the coil 22 is de-energized, and be attracted by the magnet (i.e., the turntable magnet 3) when the coil 22 is de-energized. The moving iron core 21 is made of soft magnetic material, such as pure iron or low carbon steel.

[0051] The advantages of adopting the above preferred scheme are: when the coil is de-energized, the magnetic field disappears, and the turntable magnet uses magnetic attraction to drive the moving iron core to move along the cup core, thereby causing the turntable magnet to attract the moving iron core. At the same time, in conjunction with the polygonal structure of the cup core, the rotation of the moving iron core in the circumferential direction is limited, ultimately preventing the turntable from rotating without restraint due to external disturbances.

[0052] Preferably, the turntable magnet 3 is fixedly mounted on the turntable connecting shaft 4.

[0053] It should be noted that in the technical solution of this utility model, the rotating part of the turntable is the turntable connecting shaft 4.

[0054] The advantages of adopting the above preferred scheme are: it helps to make the turntable magnet move synchronously with the turntable, thereby limiting the movement of the turntable by restricting the turntable magnet.

[0055] The principle of this utility model is explained below: like Figure 1 and Figure 2 As shown, since the coil 22 is connected to the power supply of the motor that drives the turntable to rotate, the coil 22 is synchronously energized when the motor is energized, and the moving iron core 21 will generate a magnetic field. Since the magnetic poles of the electromagnetic conversion mechanism 2 and the turntable magnet 3 are in the same direction at opposite ends, the turntable magnet 3 and the moving iron core 21 will be separated due to the repulsion of like poles. At this time, the motor drives the turntable connecting shaft 4 and the turntable fixedly connected to the turntable connecting shaft 4 to rotate without interfering with the moving iron core 21. When the motor is de-energized, coil 22 is de-energized simultaneously, and the magnetic field generated by the moving iron core 21 disappears. Then, under the action of magnetic attraction, the turntable magnet 3 will move the moving iron core 21 along the cup core 12 until the turntable magnet 3 attracts the moving iron core 21. At this time, since the cup core 12 is a polygonal rod-shaped structure, the circumferential rotation of the moving iron core 21 is restricted. This is equivalent to restricting the circumferential rotation of the turntable magnet 3, the turntable connecting shaft 4, and the turntable itself, which are attracted together with the moving iron core 21. This achieves self-locking and prevents the turntable from rotating without restraint due to external disturbances when the power is off.

[0056] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0058] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0059] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0061] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A device for self-locking a turntable upon power failure, characterized in that, include: The limiting and fixing mechanism (1), the electromagnetic conversion mechanism (2), and the turntable magnet (3) are provided. The limiting and fixing mechanism (1) is fixedly installed. The electromagnetic conversion mechanism (2) is installed inside the limiting and fixing mechanism (1). The turntable magnet (3) is fixedly installed on the rotating part of the turntable. The electromagnetic conversion mechanism (2) is spaced apart from the turntable magnet (3) or attracted to it by being energized or de-energized. The limiting and fixing mechanism (1) includes a cup core (12), which is a polygonal rod structure. The electromagnetic conversion mechanism (2) is movably sleeved on the cup core (12) along the axial direction of the limiting and fixing mechanism (1).

2. The turntable power-off self-locking device according to claim 1, characterized in that, The limiting and fixing mechanism (1) further includes a fixed cup holder (11), the cup core (12) is arranged inside the fixed cup holder (11) along the axial direction of the fixed cup holder (11), one end of the cup core (12) is fixedly connected to the inner wall of the fixed cup holder (11), the electromagnetic conversion mechanism (2) is arranged inside the fixed cup holder (11), and the electromagnetic conversion mechanism (2) is movably sleeved on the cup core (12) along the axial direction of the fixed cup holder (11).

3. The turntable power-off self-locking device according to claim 2, characterized in that, The fixed cup holder (11) is a cylindrical structure with an open left end, and one end of the cup core (12) is fixedly connected to the right end of the inner wall of the fixed cup holder (11).

4. The turntable power-off self-locking device according to claim 2, characterized in that, The left end of the fixed cup holder (11) is provided with a cup rim (111), which is fixedly installed on the non-rotating part of the turntable.

5. The turntable power-off self-locking device according to claim 1, characterized in that, The electromagnetic conversion mechanism (2) includes a moving iron core (21) and a coil (22). The coil (22) is wound around the outer wall of the moving iron core (21) along the axial direction of the moving iron core (21). The moving iron core (21) is sleeved on the cup core (12).

6. The turntable power-off self-locking device according to claim 5, characterized in that, The moving iron core (21) has a sliding hole (211) in its axial direction. The sliding hole (211) is a polygonal through hole, and the cup core (12) is adapted to be disposed in the sliding hole (211).

7. The turntable power-off self-locking device according to claim 5, characterized in that, The coil (22) is connected to the power supply of the motor that drives the rotating part of the turntable to rotate.

8. The turntable power-off self-locking device according to claim 5, characterized in that, When the coil (22) is energized, the electromagnetic conversion mechanism (2) generates a magnetic field, and the magnetic poles of the electromagnetic conversion mechanism (2) and the turntable magnet (3) are in the same direction.

9. The turntable power-off self-locking device according to claim 5, characterized in that, When the coil (22) is de-energized, the turntable magnet (3) attracts the moving iron core (21).

10. The turntable power-off self-locking device according to any one of claims 1-9, characterized in that, The turntable magnet (3) is fixedly installed on the turntable connecting shaft (4).

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