Three-phase stepping motor with good protection effect

Abstract

The utility model discloses a three-phase stepping motor with a good protection effect, which comprises a base, a first fixing frame is fixedly connected to the side of the upper surface of the base, a second fixing frame is fixedly connected to one side, far away from the first fixing frame, of the upper surface of the base, and a fixing frame is fixedly connected to the upper surface of the base. A rolling bearing is fixedly connected to the inner wall of the fixing frame, a rotating disc is fixed to the inner ring of the rolling bearing, a rotating column is fixedly connected to the upper surface of the rotating disc, and a three-phase motor is fixedly connected to the top end of the rotating column; a protection mechanism is arranged between the opposite faces of the first fixing frame and the second fixing frame and comprises a connecting rod, the connecting rod is fixedly connected to the outer surface of the three-phase motor, and a circular ring is fixedly connected to the end of the connecting rod. The three-phase stepping motor with good protection effect disclosed by the utility model has the effect of preventing the motor from being damaged by strong torque force when the output end is blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of three-phase stepping motors, in particular to a three-phase stepping motor with good protection effect. Background Art

[0002] The three-phase stepper motor is a widely used motor type. It primarily consists of a stator and a rotor. The stator has three sets of windings, one for each of the three phases of power. When the three phases are energized sequentially, a rotating magnetic field is generated in the stator, driving the rotor. Three-phase stepper motors offer many advantages. First, they offer high precision and positioning capabilities. By precisely controlling the sequence and timing of power supply, precise angle control can be achieved, making them suitable for applications requiring high-precision positioning, such as CNC machine tools and automated production lines. Second, they offer high torque, enabling them to drive heavier loads. Furthermore, three-phase stepper motors offer a fast response time, enabling rapid starting and stopping, making them suitable for applications requiring frequent starts and stops.

[0003] For example, the utility model with announcement number CN207490627U discloses a three-phase stepping motor, including stator laminations and rotor laminations. The stator laminations include nine main poles, wherein main poles U1, U2, and U3 constitute the U phase, main poles V1, V2, and V3 constitute the V phase, and main poles W1, W2, and W3 constitute the W phase. The stator laminations are rotatable by 120 degrees, and the stator teeth of each main pole of each phase of the stator laminations are simultaneously aligned with the rotor teeth on the corresponding rotor laminations. The circumferential positions of the main poles of each phase of the stator laminations differ by 120 degrees. Compared with the prior art, the utility model has the advantages of maximizing the output torque of the motor, providing high motor operation accuracy, reducing the vibration and noise of the motor, and reducing the cost of the motor.

[0004] Similar to the above application, there are still the following deficiencies:

[0005] When there is an obstruction at the output, the strong torque force will damage the motor. Utility Model Content

[0006] The utility model discloses a three-phase stepping motor with good protection effect, aiming to solve the technical problem that when the output end is blocked, strong torque force may damage the motor.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A three-phase stepper motor with good protection effect includes a base, a first fixing frame fixedly connected to the side of the upper surface of the base, a second fixing frame fixedly connected to the side of the upper surface of the base away from the first fixing frame, the upper surface of the base fixedly connected to a fixing frame, a rolling bearing fixedly connected to the inner wall of the fixing frame, a rotating disk fixed to the inner ring of the rolling bearing, a rotating column fixedly connected to the upper surface of the rotating disk, and a three-phase motor fixedly connected to the top of the rotating column; a protection mechanism is provided between the opposing surfaces of the first fixing frame and the second fixing frame, the protection mechanism includes a connecting rod, the connecting rod is fixedly connected to the outer surface of the three-phase motor, the end of the connecting rod is fixedly connected to a circular ring, and a wedge-shaped blocking block is fixedly connected to the inner cavity of the circular ring.

[0009] By setting a rolling bearing, the rotating disk can generate stable rotation in the inner cavity of the fixed frame, thereby enabling the three-phase motor to rotate directly above the base. By setting a protective mechanism, the three-phase motor can be rotated when the output end of the three-phase motor is stuck, thereby preventing the output end of the three-phase motor from being damaged due to strong torque. By setting a connecting rod, the ring can be connected to the outer surface of the three-phase motor.

[0010] In a preferred embodiment, there are several connecting rods, and the several connecting rods are fixedly connected to the outer surface of the three-phase motor. There are several wedge-shaped blocking blocks, and the several wedge-shaped blocking blocks are evenly distributed.

[0011] By setting a number of connecting rods, the ring can be connected to the outer surface of the three-phase motor, and by setting a number of wedge-shaped blocking blocks, the inner cavity of the ring can be divided into a number of spaces.

[0012] In a preferred embodiment, the protection mechanism also includes a connecting frame, which is fixedly connected to the side of the first fixing frame close to the ring, and the side of the connecting frame away from the first fixing frame is fixedly connected to a limiting sleeve, and the limiting sleeve is slidably connected to the outer surface of the ring. The protection mechanism also includes a limiting frame and a limiting tube, wherein the limiting frame is fixedly connected to the side of the second fixing frame close to the ring, the limiting frame and the outer surface of the limiting sleeve are frictionally adapted, the limiting tube is fixedly connected to the inner wall of the second fixing frame, and a sliding rod is slidably connected to the inner cavity of the limiting tube, and one end of the sliding rod close to the ring is fixedly connected to a wedge-shaped extrusion block, and the wedge-shaped extrusion block is extruded and adapted to the outer surface of the wedge-shaped barrier block, and the outer surface of the limiting tube is fixedly connected to an extrusion tube, and one end of the sliding rod away from the wedge-shaped extrusion block is fixedly connected to a spring, and the end of the spring is fixedly connected to the inner wall of the extrusion tube.

[0013] By setting a limit sleeve, the ring can be limited so that the ring can rotate more stably. By setting a limit frame, it can cooperate with the limit sleeve to make the ring rotate more stably. By setting a limit tube, the sliding rod can be limited so that the sliding rod can slide stably in the inner cavity of the limit tube, so that the wedge-shaped extrusion block can enter the inner cavity of the ring or move away from the inner cavity of the ring. By setting a spring, elastic potential energy can be generated, so that the sliding rod can drive the wedge-shaped extrusion block to always be subjected to an extrusion force toward the ring.

[0014] From the above, it can be seen that a three-phase stepping motor with good protection effect has the following improvements and advantages compared with the existing technology:

[0015] First, by providing a rolling bearing, the rotating disk can generate stable rotation in the inner cavity of the fixed frame, thereby enabling the three-phase motor to generate rotation directly above the base.

[0016] Second: by setting up a protection mechanism, the three-phase motor can be rotated when the output end of the three-phase motor is stuck, thereby preventing the output end of the three-phase motor from being damaged due to strong torque. By setting up a connecting rod, the ring can be connected to the outer surface of the three-phase motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a three-phase stepping motor with good protection effect proposed by the utility model.

[0018] Figure 2 The figure is a partial structural diagram of a three-phase stepping motor with good protection effect proposed by the utility model.

[0019] Figure 3 This is a schematic diagram of a protection mechanism component of a three-phase stepper motor with good protection effect proposed by the utility model.

[0020] Figure 4 The utility model is a partial cross-sectional schematic diagram of a protection mechanism of a three-phase stepping motor with good protection effect.

[0021] In the accompanying drawings: 1. Base; 2. Fixed frame; 3. Rolling bearing; 4. Rotating disk; 5. Rotating column; 6. Three-phase motor; 7. First fixed frame; 8. Second fixed frame; 9. Protective mechanism; 91. Connecting rod; 92. Ring; 93. Wedge-shaped barrier block; 94. Connecting frame; 95. Limiting sleeve; 96. Limiting tube; 97. Limiting frame; 98. Extrusion tube; 99. Sliding rod; 910. Spring; 911. Wedge-shaped extrusion block. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0024] The utility model discloses a three-phase stepping motor with good protection effect, which is mainly used in scenarios where the output end is blocked and strong torque force may damage the motor.

[0025] Reference Figure 1 、 Figure 2 and Figure 3 A three-phase stepping motor with good protection effect includes a base 1, a first fixing bracket 7 is fixedly connected to the side of the upper surface of the base 1, a second fixing bracket 8 is fixedly connected to the side of the upper surface of the base 1 away from the first fixing bracket 7, a fixing frame 2 is fixedly connected to the upper surface of the base 1, a rolling bearing 3 is fixedly connected to the inner wall of the fixing frame 2, a rotating disk 4 is fixed to the inner ring of the rolling bearing 3, a rotating disk 4 is fixedly connected to the upper surface of the rotating disk 4, and a rotating column 5 is fixedly connected to the top of the rotating column 5. A protective mechanism 9 is provided between the opposite surfaces of the first fixing bracket 7 and the second fixing bracket 8, and the protective mechanism 9 includes a connecting rod 9 1, the connecting rod 91 is fixedly connected to the outer surface of the three-phase motor 6, the end of the connecting rod 91 is fixedly connected to a ring 92, and the inner cavity of the ring 92 is fixedly connected to a wedge-shaped blocking block 93. By providing a rolling bearing 3, the rotating disk 4 can generate stable rotation in the inner cavity of the fixed frame 2, thereby enabling the three-phase motor 6 to rotate directly above the base 1. By providing a protective mechanism 9, the three-phase motor 6 can be rotated when the output end of the three-phase motor 6 is stuck, thereby preventing the output end of the three-phase motor 6 from being damaged due to strong torque. By providing a connecting rod 91, the ring 92 can be connected to the outer surface of the three-phase motor 6.

[0026] Reference Figure 1 、 Figure 2 and Figure 3In a preferred embodiment, the number of the connecting rods 91 is several, and the several connecting rods 91 are fixedly connected to the outer surface of the three-phase motor 6. By setting several connecting rods 91, the ring 92 can be connected to the outer surface of the three-phase motor 6. The number of the wedge-shaped blocking blocks 93 is several, and the several wedge-shaped blocking blocks 93 are evenly distributed. By setting several wedge-shaped blocking blocks 93, the inner cavity of the ring 92 can be separated into several spaces.

[0027] Reference Figure 1 、 Figure 3 and Figure 4 In a preferred embodiment, the protection mechanism 9 also includes a connecting frame 94, which is fixedly connected to the side of the first fixing frame 7 close to the ring 92, and the side of the connecting frame 94 away from the first fixing frame 7 is fixedly connected to a limiting sleeve 95, and the limiting sleeve 95 is slidably connected to the outer surface of the ring 92. By setting the limiting sleeve 95, the ring 92 can be limited so that the ring 92 can rotate more stably. The protection mechanism 9 also includes a limiting frame 97 and a limiting tube 96, and the limiting frame 97 is fixedly connected to the side of the second fixing frame 8 close to the ring 92, and the limiting frame 97 is frictionally adapted to the outer surface of the limiting sleeve 95, and the limiting tube 96 is fixedly connected to the inner wall of the second fixing frame 8. By setting the limiting frame 97, it can cooperate with the limiting sleeve 95, thereby making the ring 92 able to rotate more stably. A sliding rod 99 is slidably connected to the inner cavity, and the end of the sliding rod 99 close to the ring 92 is fixedly connected to a wedge-shaped extrusion block 911, and the wedge-shaped extrusion block 911 is extruded and adapted to the outer surface of the wedge-shaped barrier block 93. By setting a limiting tube 96, the sliding rod 99 can be limited, so that the sliding rod 99 can produce stable sliding in the inner cavity of the limiting tube 96, thereby enabling the wedge-shaped extrusion block 911 to enter the inner cavity of the ring 92 or move away from the inner cavity of the ring 92. The outer surface of the limiting tube 96 is fixedly connected to an extrusion tube 98, and the end of the sliding rod 99 away from the wedge-shaped extrusion block 911 is fixedly connected to a spring 910, and the end of the spring 910 is fixedly connected to the inner wall of the extrusion tube 98. By setting the spring 910, elastic potential energy can be generated, so that the sliding rod 99 can drive the wedge-shaped extrusion block 911 to always be subjected to an extrusion force toward the ring 92.

[0028] Working principle: During use, when the output end of the three-phase motor 6 does not rotate due to various reasons, in order to prevent the strong torque from causing damage to the three-phase motor 6, the three-phase motor 6 will produce a slight rotation. During rotation, the wedge-shaped blocking block 93 will be squeezed with the wedge-shaped extrusion block 911. During the extrusion process, the sliding rod 99 will move in the inner cavity of the limiting tube 96, so that the wedge-shaped extrusion block 911 no longer blocks the wedge-shaped blocking block 93, and the outer casing of the three-phase motor 6 will rotate.

[0029] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The replacements described may be partial structures, devices, or method steps, or they may be complete technical solutions. Any equivalent replacements or modifications based on the technical solution and the concept of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A three-phase stepping motor with good protection effect, comprising a base (1), a first fixing frame (7) fixedly connected to the side of the upper surface of the base (1), and a second fixing frame (8) fixedly connected to the side of the upper surface of the base (1) away from the first fixing frame (7), characterized in that: The upper surface of the base (1) is fixedly connected to a fixed frame (2), the inner wall of the fixed frame (2) is fixedly connected to a rolling bearing (3), the inner ring of the rolling bearing (3) is fixed to a rotating disk (4), the upper surface of the rotating disk (4) is fixedly connected to a rotating column (5), and the top of the rotating column (5) is fixedly connected to a three-phase motor (6); a protection mechanism (9) is provided between the opposite surfaces of the first fixed frame (7) and the second fixed frame (8), and the protection mechanism (9) includes a connecting rod (91), the connecting rod (91) is fixedly connected to the outer surface of the three-phase motor (6), the end of the connecting rod (91) is fixedly connected to a circular ring (92), and the inner cavity of the circular ring (92) is fixedly connected to a wedge-shaped blocking block (93).

2. A three-phase stepping motor with good protection effect according to claim 1, characterized in that: There are several connecting rods (91), and the several connecting rods (91) are all fixedly connected to the outer surface of the three-phase motor (6).

3. A three-phase stepping motor with good protection effect according to claim 1, characterized in that: The number of the wedge-shaped blocking blocks (93) is several, and the several wedge-shaped blocking blocks (93) are evenly distributed.

4. A three-phase stepping motor with good protection effect according to claim 1, characterized in that: The protection mechanism (9) further comprises a connecting frame (94), wherein the connecting frame (94) is fixedly connected to a side of the first fixing frame (7) close to the circular ring (92), and a side of the connecting frame (94) away from the first fixing frame (7) is fixedly connected to a limiting sleeve (95), wherein the limiting sleeve (95) is slidably connected to the outer surface of the circular ring (92).

5. A three-phase stepping motor with good protection effect according to claim 1, characterized in that: The protection mechanism (9) further comprises a limiting frame (97) and a limiting tube (96); the limiting frame (97) is fixedly connected to a side of the second fixing frame (8) close to the ring (92); the limiting frame (97) is frictionally matched with the outer surface of the limiting sleeve (95); and the limiting tube (96) is fixedly connected to the inner wall of the second fixing frame (8).

6. A three-phase stepping motor with good protection effect according to claim 5, characterized in that: A sliding rod (99) is slidably connected to the inner cavity of the limiting tube (96), and a wedge-shaped extrusion block (911) is fixedly connected to one end of the sliding rod (99) close to the ring (92). The wedge-shaped extrusion block (911) is extruded and adapted to the outer surface of the wedge-shaped blocking block (93).

7. A three-phase stepping motor with good protection effect according to claim 6, characterized in that: The outer surface of the limiting tube (96) is fixedly connected to an extrusion tube (98), and one end of the sliding rod (99) away from the wedge-shaped extrusion block (911) is fixedly connected to a spring (910), and the end of the spring (910) is fixedly connected to the inner wall of the extrusion tube (98).

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