Three-phase motor convenient to maintain

Abstract

The utility model relates to the technical field of motors, and discloses a three-phase motor convenient to maintain, which comprises a mounting base, a fixed motor shell is arranged on the upper side of the mounting base, a detachable motor stator is arranged in the motor shell, and a detachable motor front end cover is arranged at the front end of the motor shell. During installation, rotation of the positioning column is firstly limited, a primary threaded locking effect is achieved by screwing the first threaded column into the first threaded cavity, the two rotating rings are arranged in the circular holes in the connecting sleeve in a sleeved mode, then the locking column is firstly inserted into the first locking cavity, the clamping block cannot rotate, and then the locking column is screwed into the first locking cavity. The connecting sleeve is extruded through the two locking nuts, so that the connecting sleeve extrudes the locking column to lock the locking column, one end of the first threaded column is reinforced, the stability strength is improved, and the situation that the first threaded column is loosened due to vibration generated when the motor works is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electric motors, in particular to a three-phase electric motor which is easy to maintain. Background Art

[0002] A three-phase motor refers to a motor whose three-phase stator winding (each phase differs by 120 degrees electrical angle) generates a rotating magnetic field when three-phase alternating current is applied. The rotating magnetic field cuts the rotor winding, thereby generating an induced current in the rotor winding (the rotor winding is a closed path). The current-carrying rotor conductor will generate an electromagnetic force under the action of the stator rotating magnetic field, thereby forming an electromagnetic torque on the motor shaft, driving the motor to rotate, and the direction of motor rotation is the same as the direction of the rotating magnetic field.

[0003] When a three-phase motor fails, the front cover and rear cover of the motor need to be removed respectively. The front cover and rear cover of the motor are usually fixed by nuts, and they need to be removed step by step during the disassembly process, which is time-consuming and laborious. When this motor is working, the vibration of the motor will cause the bolts to shake, thereby causing the motor to shake more severely and affecting the stable use of the motor. For this reason, we propose a three-phase motor that is easy to maintain. Utility Model Content

[0004] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a three-phase motor which is easy to maintain.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a three-phase motor that is easy to maintain, including a mounting base, a fixed motor housing is arranged on the upper side of the mounting base, a detachable motor stator is arranged inside the motor housing, a detachable motor front end cover is arranged at the front end of the motor housing, a detachable motor rear end cover is arranged at the rear end of the motor housing, a first mounting hole that penetrates the motor housing is opened on the inner side of the motor housing, a second mounting hole that penetrates the motor front end cover is opened at a position corresponding to the first mounting hole on the end face of the motor front end cover, a limiting hole is opened at a position corresponding to the first mounting hole on the end face of the motor rear end cover, a blocking ring is fixedly connected to the inner side of the motor rear end cover, a third mounting hole is opened at a position corresponding to the first mounting hole on the end face of the blocking ring, a movable first locking piece is arranged inside the limiting hole, and a second locking piece that matches the first locking piece is arranged inside the second mounting hole.

[0006] Preferably, the first locking member includes a positioning column slidably connected to the inside of the limiting hole, the positioning column passes through the third mounting hole and extends to the inside of the first mounting hole, a first threaded cavity is opened at one end of the positioning column, a connecting spring is fixedly connected to the inside of the first threaded cavity, a sliding block is fixedly connected to one end of the connecting spring, the sliding block is slidably connected to the inside of the first threaded cavity, a locking block is movably connected to the end of the sliding block away from the connecting spring, and a hexagonal groove is opened at the end of the locking block away from the sliding block.

[0007] Preferably, the second locking member includes a first threaded column, which is threadedly connected to the inside of the first threaded cavity, and the first threaded column passes through the second mounting hole and the first mounting hole. One end of the first threaded column is fixedly connected to an adapter block, and the adapter block is slidably connected to the inside of the positioning block.

[0008] Preferably, the adapter block is in the shape of a hexagonal prism, and the cross-sectional size of the adapter block is matched with the cross-sectional size of the hexagonal groove provided on the end face of the locking block.

[0009] Preferably, a rotating cavity is provided inside the sliding block, one end of the positioning block is fixedly connected to the rotating block corresponding to the position of the rotating cavity, and the rotating block is movably installed inside the rotating cavity.

[0010] Preferably, a second locking cavity is provided at one end of the positioning column, the second locking cavity extends to the interior of the first threaded cavity, the second locking cavity is a circular hole, a first locking cavity is provided at the position of the sliding block corresponding to the second locking cavity, the first locking cavity extends to the interior of the positioning block, the first locking cavity is a rectangular cavity, a fixed one is arranged inside the first locking cavity, and one end of the locking column passes through the second locking cavity and extends to one side of the positioning column.

[0011] Preferably, one end of the locking column is fixedly connected to a connecting sleeve, and two circular holes are provided on the side of the connecting sleeve. A movable cavity is provided on the end face of the positioning column, and the cross-section of the movable cavity is a "T"-shaped annular cavity. Two rotating rings are movably installed inside the movable cavity corresponding to the positions of the circular holes provided on the side of the connecting sleeve. The rotating ring passes through the connecting sleeve, and a locking nut is threadedly connected to the rotating ring.

[0012] Beneficial Effects

[0013] The utility model provides a three-phase motor that is easy to maintain and has the following beneficial effects:

[0014] (1) The three-phase motor is easy to maintain. When the three-phase motor fails, the first locking piece and the second locking piece are separated. At this time, the front cover of the motor and the rear cover of the motor can be separated from the motor housing, so that the three-phase motor can be quickly disassembled. During installation, the rotation of the positioning column is first limited. The first threaded column is screwed into the first threaded cavity to achieve a preliminary thread locking effect. The two rotating rings are put into the circular holes on the connecting sleeve, and the locking column is first inserted into the first locking cavity to prevent the positioning block from rotating. The connecting sleeve is squeezed by two locking nuts, so that the connecting sleeve squeezes the locking column to lock the locking column, thereby reinforcing one end of the first threaded column, improving the stability and strength, and preventing the first threaded column from loosening due to vibration generated when the motor is working. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0016] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a cross-sectional view of the utility model;

[0019] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0020] Figure 4 For this utility model Figure 2 The enlarged structural diagram at B in the middle;

[0021] Figure 5 For this utility model Figure 2 Enlarged structural diagram at point C in the middle.

[0022] Legend:

[0023] 1. Mounting base; 211. Motor housing; 212. Motor stator; 213. First mounting hole; 311. Motor front cover; 312. Second mounting hole; 411. Motor rear cover; 412. Limit hole; 413. Blocking ring; 414. Third mounting hole; 511. Positioning column; 512. First threaded cavity; 513. First threaded column; 521. Sliding block; 522. Positioning block; 523. Adapter block; 524. Connecting spring; 525. Rotating cavity; 526. Rotating block; 527. First locking cavity; 528. Second locking cavity; 529. Locking column; 531. Movable cavity; 532. Rotating ring; 533. Connecting sleeve; 534. Locking nut. DETAILED DESCRIPTION

[0024] 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.

[0025] like Figure 1-Figure 5 As shown, a three-phase motor that is easy to maintain includes a mounting base 1, a fixed motor housing 211 is arranged on the upper side of the mounting base 1, a detachable motor stator 212 is arranged inside the motor housing 211, a detachable motor front end cover 311 is arranged at the front end of the motor housing 211, a detachable motor rear end cover 411 is arranged at the rear end of the motor housing 211, a first mounting hole 213 penetrating the motor housing 211 is opened on the inner side of the motor housing 211, a second mounting hole 312 penetrating the motor front end cover 311 is opened at a position corresponding to the first mounting hole 213 on the end surface of the motor front end cover 311, and the motor rear end cover 411 is opened. 1 is provided with a limiting hole 412 at a position corresponding to the first mounting hole 213, a blocking ring 413 is fixedly connected to the inner side of the rear end cover 411 of the motor, a third mounting hole 414 is provided at a position corresponding to the first mounting hole 213 on the end face of the blocking ring 413, a movable first locking member is provided inside the limiting hole 412, a second locking member matched with the first locking member is provided inside the second mounting hole 312, when the three-phase motor fails, the first locking member is separated from the second locking member, at this time, the front end cover 311 of the motor and the rear end cover 411 of the motor can be separated from the motor housing 211, so that the three-phase motor can be quickly disassembled;

[0026] The first locking member includes a positioning column 511 slidably connected to the inside of the limiting hole 412, the positioning column 511 passes through the third mounting hole 414 and extends to the inside of the first mounting hole 213, a first threaded cavity 512 is provided at one end of the positioning column 511, a connecting spring 524 is fixedly connected to the inside of the first threaded cavity 512, a sliding block 521 is fixedly connected to one end of the connecting spring 524, the sliding block 521 is slidably connected to the inside of the first threaded cavity 512, an end of the sliding block 521 away from the connecting spring 524 is movably connected to a positioning block 522, and a hexagonal groove is provided at one end of the positioning block 522 away from the sliding block 521. The second locking member includes a first threaded column 513, the first threaded column 513 is threadedly connected to the inside of the first threaded cavity 512, the first threaded column 513 passes through the second mounting hole 312 and the first mounting hole 213, one end of the first threaded column 513 is fixedly connected to an adapter block 523, and the adapter block 523 is slidably connected to the positioning block 522 The adapter block 523 is in the shape of a hexagonal prism, and the cross-sectional size of the adapter block 523 is adapted to the cross-sectional size of the hexagonal groove opened on the end face of the positioning block 522. During installation, the positioning column 511 is first inserted into the interior of the limiting hole 412. At this time, the limiting hole 412 cannot rotate. One end of the positioning column 511 passes through the third mounting hole 414 and extends to the interior of the first mounting hole 213. Then the first threaded column 513 passes through the second mounting hole 312 and is screwed into the interior of the first threaded cavity 512. The first threaded column 513 drives the adapter block 523 to move. The adapter block 523 is inserted into the interior of the positioning block 522 to push the sliding block 521 to move. When the sliding block 521 moves, the connecting spring 524 is compressed. At this time, one end of the first threaded column 513 is fitted with the outer end face of the front end cover 311 of the motor to tighten the front end cover 311 of the motor, the motor housing 211 and the rear end cover 411 of the motor to lock the motor as a whole.

[0027] The sliding block 521 is provided with a rotating cavity 525, one end of the positioning block 522 is fixedly connected to the rotating block 526 corresponding to the position of the rotating cavity 525, and the rotating block 526 is movably installed in the rotating cavity 525. The positioning block 522 drives the rotating block 526 to rotate in the rotating cavity 525. The sliding block 521 can slide in the first threaded cavity 512 to squeeze the connecting spring 524. One end of the positioning column 511 is provided with a second locking cavity 528, and the second locking cavity 528 extends The first locking cavity 527 is provided at a position of the sliding block 521 corresponding to the second locking cavity 528, and the first locking cavity 527 extends to the interior of the positioning block 522. The first locking cavity 527 is a rectangular cavity, and a fixed locking column 529 is provided inside the first locking cavity 527. One end of the locking column 529 passes through the second locking cavity 528 and extends to one side of the positioning column 511. One end of the locking column 529 is fixedly connected to a connecting sleeve 533. The connecting sleeve 533 The side of the positioning column 511 is provided with two circular holes, and the end surface of the positioning column 511 is provided with a movable cavity 531, and the cross section of the movable cavity 531 is a "T"-shaped annular cavity. Two rotating rings 532 are movably installed in the movable cavity 531 corresponding to the circular hole position on the side of the connecting sleeve 533. The rotating ring 532 passes through the connecting sleeve 533, and a locking nut 534 is threadedly connected to the rotating ring 532. The two rotating rings 532 are sleeved in the circular holes on the connecting sleeve 533. The locking column 529 is first inserted into the first locking cavity 527. Internally, rotate the locking column 529 to align one end of the locking column 529 with one end of the rotating block 526 so that the locking column 529 is inserted into the rotating block 526 and the positioning block 522, rotate the two locking nuts 534 to squeeze the connecting sleeve 533, and the connecting sleeve 533 squeezes the locking column 529 to lock the locking column 529, thereby reinforcing one end of the first threaded column 513, improving the stability and strength, and preventing the first threaded column 513 from loosening due to the vibration generated when the motor is working.

[0028] The working principle of this utility model:

[0029] When in use, when the three-phase motor fails, the first locking member is separated from the second locking member, and the front end cover 311 of the motor and the rear end cover 411 of the motor can be separated from the motor housing 211, so that the three-phase motor can be quickly disassembled. When installing, first, the positioning column 511 is inserted into the interior of the limiting hole 412 so that the limiting hole 412 cannot rotate. One end of the positioning column 511 passes through the third mounting hole 414 and extends to the interior of the first mounting hole 213. Then, the first threaded column 513 passes through the second mounting hole 312 and is screwed into the interior of the first threaded cavity 512. The first threaded column 513 drives the adapter block 523 to move. The adapter block 523 is inserted into the interior of the positioning block 522 to push the sliding block 521 to move. When the sliding block 521 moves, the connecting spring 524 is compressed. At this time, one end of the first threaded column 513 is connected to the front end cover 311 of the motor The outer end surface of 11 is fitted to tighten the front end cover 311 of the motor, the motor housing 211 and the rear end cover 411 of the motor to lock the motor as a whole, the positioning block 522 drives the rotating block 526 to rotate inside the rotating cavity 525, the sliding block 521 can slide inside the first threaded cavity 512 to squeeze the connecting spring 524, the two rotating rings 532 are sleeved in the circular holes on the connecting sleeve 533, the locking column 529 is first inserted into the first locking cavity 527, the locking column 529 is rotated to align one end of the locking column 529 with one end of the rotating block 526 so that the locking column 529 is inserted into the rotating block 526 and the positioning block 522, the two locking nuts 534 are rotated to squeeze the connecting sleeve 533, the connecting sleeve 533 squeezes the locking column 529 to lock the locking column 529, thereby reinforcing one end of the first threaded column 513.

[0030] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A three-phase motor that is easy to maintain, comprising a mounting base (1), a fixed motor housing (211) being arranged on the upper side of the mounting base (1), and a detachable motor stator (212) being arranged inside the motor housing (211), characterized in that: The front end of the motor housing (211) is provided with a detachable motor front end cover (311), the rear end of the motor housing (211) is provided with a detachable motor rear end cover (411), the inner side of the motor housing (211) is provided with a first mounting hole (213) penetrating the motor housing (211), the end surface of the motor front end cover (311) is provided with a second mounting hole (312) penetrating the motor front end cover (311) at a position corresponding to the first mounting hole (213), the end surface of the motor rear end cover (411) is provided with a limiting hole (412) at a position corresponding to the first mounting hole (213), the inner side of the motor rear end cover (411) is fixedly connected with a blocking ring (413), the end surface of the blocking ring (413) is provided with a third mounting hole (414) at a position corresponding to the first mounting hole (213), the interior of the limiting hole (412) is provided with a movable first locking member, and the interior of the second mounting hole (312) is provided with a second locking member matched with the first locking member.

2. A three-phase motor that is easy to maintain according to claim 1, characterized in that: The first locking member comprises a positioning column (511) slidably connected to the inside of the limiting hole (412); the positioning column (511) passes through the third mounting hole (414) and extends to the inside of the first mounting hole (213); a first threaded cavity (512) is provided at one end of the positioning column (511); a connecting spring (524) is fixedly connected to the inside of the first threaded cavity (512); a sliding block (521) is fixedly connected to one end of the connecting spring (524); the sliding block (521) is slidably connected to the inside of the first threaded cavity (512); an end of the sliding block (521) away from the connecting spring (524) is movably connected to a positioning block (522); and an end of the positioning block (522) away from the sliding block (521) is provided with a hexagonal groove.

3. A three-phase motor that is easy to maintain according to claim 2, characterized in that: The second locking member comprises a first threaded column (513), the first threaded column (513) is threadedly connected to the interior of the first threaded cavity (512), the first threaded column (513) passes through the second mounting hole (312) and the first mounting hole (213), one end of the first threaded column (513) is fixedly connected to an adapter block (523), and the adapter block (523) is slidably connected to the interior of the locking block (522).

4. A three-phase motor that is easy to maintain according to claim 3, characterized in that: The adapting block (523) is in the shape of a hexagonal prism, and the cross-sectional size of the adapting block (523) is adapted to the cross-sectional size of the hexagonal groove provided on the end surface of the locking block (522).

5. A three-phase motor that is easy to maintain according to claim 4, characterized in that: A rotating cavity (525) is provided inside the sliding block (521), one end of the positioning block (522) is fixedly connected to the rotating block (526) corresponding to the position of the rotating cavity (525), and the rotating block (526) is movably installed inside the rotating cavity (525).

6. A three-phase motor that is easy to maintain according to claim 5, characterized in that: A second locking cavity (528) is provided at one end of the positioning column (511), and the second locking cavity (528) extends to the interior of the first threaded cavity (512). The second locking cavity (528) is a circular hole. A first locking cavity (527) is provided at a position of the sliding block (521) corresponding to the second locking cavity (528), and the first locking cavity (527) extends to the interior of the positioning block (522). The first locking cavity (527) is a rectangular cavity. A fixed locking cavity (529) is provided inside the first locking cavity (527). One end of the locking column (529) passes through the second locking cavity (528) and extends to one side of the positioning column (511).

7. A three-phase motor that is easy to maintain according to claim 6, characterized in that: One end of the locking column (529) is fixedly connected to a connecting sleeve (533), and two circular holes are provided on the side of the connecting sleeve (533). The end surface of the positioning column (511) is provided with a movable cavity (531), and the cross section of the movable cavity (531) is a "T"-shaped annular cavity. Two rotating rings (532) are movably installed in the movable cavity (531) at positions corresponding to the circular holes provided on the side of the connecting sleeve (533). The rotating ring (532) passes through the connecting sleeve (533), and a locking nut (534) is threadedly connected to the rotating ring (532).

Images