Alternating current permanent magnet synchronous motor capable of releasing band-type brake without tool

Abstract

The utility model discloses an AC permanent magnet synchronous motor capable of releasing a band-type brake without a tool, and relates to the technical field of motor equipment. Comprising a motor body, a brake and a tail cover are arranged on the motor body, the tail cover and the motor body are tightened through a first tightening assembly, the first tightening assembly comprises a threaded rod, a rotary knob and a limiting element, the limiting element is fixedly sleeved with the middle of the threaded rod, and the rotary knob is fixed to one end of the threaded rod; the screw penetrates through the reverse stepped hole in the tail cover and is correspondingly screwed with the screw hole in the brake cover, the limiting element is located on one side of the reverse stepped hole and can be contained in the reverse stepped hole, and the knob is located on the other side away from the reverse stepped hole. According to the utility model, the requirements of more customers can be met, and especially, the band-type brake releasing operation of the motor can be realized under the condition of no tools.

Description

TECHNICAL FIELD

[0001] The utility model belongs to motor equipment technical field, especially relate to a tool-free release brake alternating current permanent magnet synchronous motor. BACKGROUND

[0002] At present, the motor structure needs to use a hexagonal wrench to remove the motor tail cover when manually releasing the brake, which can easily cause the loss of screw connections during cover removal, and the original manual release brake has a long handle, which occupies a large space and causes the overall size of the motor to be large.

[0003] The existing patent 202020419047.2 discloses a motor including a base and an electromagnetic brake, and further includes a protective cover fixedly connected with the base, and the electromagnetic brake is arranged in the protective cover and the base, and the protective cover is provided with a through hole corresponding to the release screw position of the electromagnetic brake, and a elastic plug is arranged in the through hole. In this scheme, the protective cover and the electromagnetic brake need to be removed by a hexagonal wrench, so a tool-free tail cover removal scheme is needed. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the above-mentioned defects, and provides a tool-free release brake alternating current permanent magnet synchronous motor, which can meet more customer needs and realize brake release operation without tools.

[0005] The specific technical scheme is as follows:

[0006] A tool-free release brake alternating current permanent magnet synchronous motor includes a motor body, a brake and a tail cover arranged on the motor body, the tail cover is tightened with the brake cover by a first tightening assembly, the first tightening assembly includes a screw rod, a knob and a limiting element, the limiting element is sleeved in the middle of the screw rod, and the knob is fixed at one end of the screw rod; the screw rod is tightened with a screw hole on the motor body through a reverse step hole on the tail cover, the limiting element is located on one side of the reverse step hole and can be accommodated in the reverse step hole, and the knob is located on the other side away from the reverse step hole.

[0007] Further to the above-mentioned scheme, the brake is tightened with the motor body by a second tightening assembly, the second tightening assembly includes a butterfly nut, a double-headed screw rod and a lock nut, the butterfly nut and the lock nut are arranged at both ends of the double-headed screw rod to fix the brake moving plate and the armature.

[0008] Further to the above-mentioned scheme, the screw rod is a full-thread screw rod, the limiting element is a nut corresponding to the screw rod and is fixed by welding, and the knob is a butterfly nut and is fixed by welding.

[0009] Further to the above-mentioned scheme, the first tightening assembly is provided with four groups and is evenly distributed along the tail cover axis.

[0010] Further, the knob corresponds to the tail cover is further provided with a gasket.

[0011] Further, the gasket comprises a flat washer and a spring washer.

[0012] Further, the distance between the knob and the flat washer is greater than the screw thread depth of the screw into the brake cover.

[0013] Further, the tail cover is provided with a sealing groove for the sealing ring at the position corresponding to the knob.

[0014] Compared with the prior art, the motor has the advantages that:

[0015] The motor is characterized in that the tail cover is removed by manually rotating the butterfly nut on the tail cover of the motor, and the butterfly nut is limited on the tail cover to form an integral whole for storage.

[0016] The tail cover is designed in a reverse stepped hole structure, and the butterfly nut, the screw, the hexagonal nut and the gasket can form an integral whole on the tail cover.

[0017] When the motor cannot be released from the brake in an emergency situation in outdoor application, the motor can be released from the brake by manually rotating the butterfly nut, which is convenient and fast. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The traditional manual release brake is shown in the figure, and the brake is released by shaking the handle, which is complicated and cannot be effectively sealed in a limited space.

[0019] Figure 2 The butterfly nut manual release brake is shown in the figure, and the shaking handle structure is removed to reduce the volume and the butterfly nut structure.

[0020] Figure 3 The first tightening assembly installation structure of the utility model is shown in the figure.

[0021] Figure 4 The principle structure of the butterfly nut manual release brake is shown in the figure.

[0022] Figure 5 Motor rear view comparison before and after tail cover removal.

[0023] 1-brake, 2-tail cover, 3-screw rod, 4-knob, 5-limiting element, 6-reverse stepped hole, 7-butterfly nut, 8-double head screw rod, 9-lock nut, 10-flat washer, 11-spring washer. DETAILED DESCRIPTION

[0024] The utility model embodiment is further described in detail below in combination with the drawings of the specification, so that the purpose, technical scheme and technical effect of the utility model are more clearly presented.

[0025] In the description of the utility model, it should be pointed out that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0026] As shown in Figures 1-5 The utility model discloses a toolless release brake alternating current permanent magnet synchronous motor, including motor body, the brake 1 and tail cover 2 are equipped on motor body, the tail cover 2 adopts first tightening assembly and is tightened with motor body, the first tightening assembly includes screw rod 3, knob 4 and limiting element 5, the limiting element 5 is fixed in the middle of screw rod 3, and the one end of screw rod 3 is fixed knob 4, screw rod 3 passes through the reverse stepped hole 6 on tail cover 2 and is tightened with the screw hole on brake cover, the limiting element 5 is located one side of reverse stepped hole 6 and can be received into reverse stepped hole 6, and knob 4 is located the other side away from reverse stepped hole 6.

[0027] Here, as shown in Figure 3 The screw rod 3 adopts a full thread screw rod, the limiting element 5 is a nut corresponding to the screw rod 3 and is obtained by welding fixation, and the knob 4 is a butterfly nut and is obtained by welding fixation. The first tightening assembly is provided with four groups, which are evenly distributed along the axis of the tail cover 2. To avoid loosening caused by vibration, the knob 4 is further provided with a gasket at the tail cover 2, specifically, the gasket includes a flat washer 10 and a spring washer 11, both of which are sleeved on the screw rod 3 and located between the tail cover 2 and the knob 4, and the flat washer 10 corresponds to the tail cover 2. It needs to be ensured that the distance between the knob 4 and the flat gasket is greater than the thread depth of the screw rod 3 screwed into the cover of the brake 1. To further increase the sealing effect, a sealing groove for a sealing ring is provided at the corresponding position of the screw rod 3 on the tail cover 2, and the sealing groove is located on the side corresponding to the knob 4.

[0028] Here provides a tool-free installation scheme of the brake 1, specifically: the brake 1 is screwed with the motor body by a second screwing assembly, the second screwing assembly comprises a butterfly nut 7, a double-headed screw rod 8 and a lock nut 9, the butterfly nut 7 and the lock nut 9 are arranged at two ends of the double-headed screw rod 8 to fix the moving plate and the armature of the brake 1, as shown in Figure 4 .

[0029] The implementation of the tail cover 2 structure is shown in Figure 3 , the first screwing assembly is made by first placing Figure 3 , the nut and the full-thread screw rod are connected together by argon arc welding, or can be connected by 272 threaded fastening adhesive, after 1 hour of standing after the threaded adhesive connection, the connection strength reaches the maximum, and after the temperature cycle test of +70℃ to -40℃, no loosening occurs; then Figure 4 the Figure 3 connecting piece is placed into the reverse stepped hole 6 of the tail cover 2, it is noted that the nut must be placed to the hole bottom on the counterbore side, the other end is sequentially placed into the flat washer 10 and the spring washer 11, and finally the butterfly nut is screwed in, it is noted that the distance between the butterfly nut and the flat washer must be greater than the threaded depth of the screw rod screwed into the brake 1 cover, after the position is determined, the butterfly nut and the full-thread screw rod are fixed together by argon arc welding, at this time, the structure of the tail cover 2 is completed. The hexagonal nut, the full-thread screw rod and the butterfly nut are fixed together to form an integral whole by welding, and at the same time, due to the structure of the reverse stepped hole 6 of the tail cover 2, these standard parts can be taken out after the tail cover 2 is removed.

[0030] During the motor assembly, one of the knobs in the first screwing assembly is screwed 2-3 turns, the screw rod is slightly screwed into the brake cover thread, then the remaining three screw rods are sequentially screwed 2-3 turns by the butterfly nut clockwise or counterclockwise, then the operation is repeated, the tail cover is uniformly locked until the spring washer is flattened, the tail cover and the brake cover are pressed tightly, and at the same time, an O-ring sealing groove can be designed on the tail cover to increase the protection level of the tail cover and the brake cover. When the tail cover is removed, the screw rod of the first screwing assembly is loosened first, then the remaining three screw rods are sequentially loosened clockwise or counterclockwise until the tail cover is removed.

[0031] After the tail cover is removed, the brake is manually released, as shown in Figure 5 , at this time, the butterfly nut can be loosened to manually release the brake.

[0032] The above is only a preferred and feasible embodiment of the utility model, and does not limit the patent application range of the utility model, any equivalent change, equivalent replacement or modification within the technical spirit and principles of the utility model should be included in the patent protection range covered by the utility model.

Claims

1. A tool-free brake release AC permanent magnet synchronous motor, comprising a motor body, a brake and a tail cover mounted on the motor body, characterized in that: The tail cover is tightened to the motor body using a first tightening assembly. The first tightening assembly includes a screw, a knob, and a limiting element. The limiting element is fixed in the middle of the screw, and the knob is fixed at one end of the screw. The screw passes through the reverse step hole on the tail cover and is tightened to the corresponding screw hole on the brake cover. The limiting element is located on one side of the reverse step hole and can be stored in the reverse step hole. The knob is located on the other side away from the reverse step hole.

2. The tool-free brake release AC permanent magnet synchronous motor according to claim 1, characterized in that: The brake is tightened to the motor body using a second tightening assembly. The second tightening assembly includes a wing nut, a double-ended screw, and a lock nut. The wing nut and lock nut are located at both ends of the double-ended screw to fix the brake moving plate and armature.

3. The tool-free brake release AC permanent magnet synchronous motor according to claim 1, characterized in that: The screw is a fully threaded screw, the limiting element is a nut corresponding to the screw and fixed by welding; the knob is a wing nut and fixed by welding.

4. The tool-free brake release AC permanent magnet synchronous motor according to claim 1, characterized in that: The first tightening assembly is provided in four sets, which are evenly distributed circumferentially along the tail cover axis.

5. The tool-free brake release AC permanent magnet synchronous motor according to claim 1, characterized in that: A gasket is also provided at the corresponding tail cover location of the knob.

6. A tool-free brake release AC permanent magnet synchronous motor according to claim 5, characterized in that: The washers include flat washers and spring washers.

7. A tool-free brake release AC permanent magnet synchronous motor according to claim 6, characterized in that: The distance between the knob and the flat washer is greater than the thread depth of the screw screw into the brake cover.

8. The tool-free brake release AC permanent magnet synchronous motor according to claim 1, characterized in that: The tail cover is provided with a sealing groove for a sealing ring at the corresponding screw, and the sealing groove is located on one side of the corresponding knob.

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