CN210157007U

CN210157007U - Flame-proof type hybrid stepping motor

Info

Publication number: CN210157007U
Application number: CN201921214922.7U
Authority: CN
Inventors: 柳超; 洪期权; 张喜臣
Original assignee: Shanghai Moons Electric Co Ltd
Current assignee: Shanghai Moons Electric Co Ltd
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-03-17
Anticipated expiration: 2029-07-30

Abstract

The utility model relates to a flame-proof type hybrid stepping motor, which comprises a hybrid stepping motor body, wherein the hybrid stepping motor body comprises a front end cover (3), a stator (4), a rotor (5), a rear end cover (7) and a wire outlet (8), the wire outlet (8) is positioned on the rear end cover (7), and the flame-proof type hybrid stepping motor also comprises a flame-proof casing (5); the explosion-proof shell (5) is connected with the front end cover (3) and the rear end cover (7) at two ends respectively and used for forming a closed space for accommodating the stator (4) and the rotor (6) so as to form explosion-proof with the outside. Compared with the prior art, the utility model has the advantages of flame proof performance is good, the seal is good, small and power is low.

Description

Flame-proof type hybrid stepping motor

Technical Field

The utility model belongs to the technical field of the motor technique and specifically relates to a flame proof type hybrid step motor that flame proof performance is good, the seal is good is related to.

Background

In the environment containing explosive gases, such as the oil drilling industry containing explosive gases such as natural gas and the like, and in some fields of coal mines and chemical industry, the equipped motor must be an explosion-proof motor for the safety of personnel in places.

With the development of the oil drilling industry, the demands on medium and small explosion-proof motors are more and more. At present, most of explosion-proof motors in the market are large synchronous motors or three-phase asynchronous motors, and the explosion-proof motors are high in power and heavy in weight and are not suitable for being used by small and medium-sized equipment; and the explosion-proof motor suitable for small and medium-sized equipment is mostly a non-hybrid stepping motor, and can not meet the special requirements of the industry containing explosive gases.

For the above situation, there are two solutions: firstly, a new design is adopted to develop an explosion-proof motor; secondly, the existing motor meeting the performance requirements is subjected to flame-proof transformation. The former is not suitable for most users due to time period and complexity. The latter is because only carry out the flame proof transformation on current motor for the user is nimble various to the selection of motor performance, has also solved the problem of motor flame proof simultaneously.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a flame proof type hybrid step motor in order to overcome the defect that above-mentioned prior art exists.

The purpose of the utility model can be realized through the following technical scheme:

the flame-proof type hybrid stepping motor comprises a hybrid stepping motor body, wherein the hybrid stepping motor body comprises a front end cover, a stator, a rotor, a rear end cover and a wire outlet hole, the wire outlet hole is positioned on the rear end cover, and the flame-proof type hybrid stepping motor also comprises a flame-proof casing; the two ends of the explosion-proof shell are respectively connected with the front end cover and the rear end cover and used for forming a closed space for accommodating the stator and the rotor, so that explosion-proof is formed between the explosion-proof shell and the outside.

Preferably, the motor further comprises a screw, and the screw sequentially penetrates through the front end cover, the stator and the rear end cover to be fixedly connected with the front end cover, the stator and the rear end cover.

Preferably, the strength grade of the screw is 12.9.

Preferably, the number of the screws is 8.

Preferably, the explosion-proof enclosure is connected with the front end cover and the rear end cover in a crimping mode respectively.

Preferably, the explosion-proof enclosure is respectively connected with the front end cover and the rear end cover, and then silica gel is filled in gaps at the joint.

Preferably, the front end cover and the rear end cover are provided with rabbets matched with inner holes of the stator, and the rabbets are used for guaranteeing the concentricity of the rotor and the stator.

Preferably, a gap is arranged between the stator and the explosion-proof shell.

Preferably, the outlet hole is filled with sealant after the cable passes through the outlet hole.

Preferably, the surface of the front end cover is provided with a through hole at a corresponding position of the rotor, and an oil seal for enhancing the sealing performance is arranged in the through hole.

Compared with the prior art, the utility model has the advantages of it is following:

firstly, the flame-proof performance is good: the utility model discloses a stator, front end housing and rear end cap are pinned to 8 12.9 grades of screws, and the fastening force distributes more evenly.

Secondly, the sealing performance is good: the utility model discloses well flame proof casing and front end housing and rear end cap crimping and scribble silica gel in clearance department, the wire outlet department also fills there is sealed glue to and the oil blanket on the front end housing has all improved the seal of electrode.

Thirdly, the volume is small, the power is low: the utility model discloses a hybrid step motor is as the basis, and its is small, power is low, the operation is accurate stable, has both satisfied the demand of explosion-proof trade centering small-size equipment, has also compromise the accurate easy advantage of accuse, economy of hybrid step motor simultaneously.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic diagram of the explosion structure of the present invention.

The reference numbers in the figures indicate:

1. the explosion-proof motor comprises a screw, 2, an oil seal, 3, a front end cover, 4, a stator, 5, an explosion-proof shell, 6, a rotor, 7, a rear end cover, 8 and a wire outlet hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.

Example (b):

as shown in fig. 1 and 2, the flameproof hybrid stepping motor includes a screw 1, an oil seal 2, a front end cover 3, a stator 4, a flameproof housing 5, a rotor 6, a rear end cover 7, and a wire outlet hole 8.

The screw 1 sequentially penetrates through the front end cover, the stator and the rear end cover to fixedly connect the front end cover, the stator and the rear end cover. The flameproof enclosure 5 is connected with the front end cover 3 and the rear end cover 7 in a compression joint mode respectively, and silica gel is filled in gaps at joints, so that the tightness of the device is improved.

The inner hole of the stator 4 is matched with the rabbets of the front end cover 3 and the rear end cover 7, and the concentricity of the rotor 6 and the stator 4 is ensured. A gap is arranged between the stator 4 and the inner wall of the explosion-proof shell 5, and 8 screws 1 respectively penetrate through 8 holes in the stator 4. The 8 screws 1 can fasten the front end cover 3, the stator 4 and the rear end cover 7 together.

The electrode is communicated with the inner side and the outer side of the electrode through the rotor 6 output shaft and the wire outlet hole 8, the surface of the front end cover 3 and the rotor 6 output shaft gap part are fixed by using the oil seal 2, and the wire outlet hole 8 is filled with sealant so as to improve the tightness.

The utility model discloses have following innovation point:

1. present explosion-proof motor is synchronous motor or three-phase asynchronous machine mostly, the utility model discloses a hybrid step motor carries out the flame proof as the basis and reforms transform, and its is small, and power is low, and the operation is accurate stable, has both satisfied the demand of explosion-proof trade centering small-size equipment, has also compromise the accurate, easy accuse of hybrid step motor simultaneously, economic characteristics.

2. Prior art generally adopts 4 screws, is slightly poor in the aspect of the intensity, and fastening force distributes and concentrates, the utility model discloses a 8 12.9 level screws 1 pin stator 4 and front end housing 3, rear end cap 7, have greatly improved the intensity and the flame proof ability of motor, and fastening force distributes more evenly simultaneously.

3. The utility model discloses an oil blanket 2, flame proof casing 5 improve the big seal of motor with the crimping of front end housing 3 and rear end cap 7, 8 encapsulating of wire hole respectively.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The flame-proof type hybrid stepping motor comprises a hybrid stepping motor body, wherein the hybrid stepping motor body comprises a front end cover (3), a stator (4), a rotor (6), a rear end cover (7) and a wire outlet hole (8), and the wire outlet hole (8) is positioned on the rear end cover (7), and is characterized by further comprising a flame-proof casing (5); the explosion-proof shell (5) is connected with the front end cover (3) and the rear end cover (7) at two ends respectively and used for forming a closed space for accommodating the stator (4) and the rotor (6) so as to form explosion-proof with the outside.

2. The flameproof hybrid stepping motor according to claim 1, wherein the motor further comprises a screw (1), and the screw (1) sequentially penetrates through the front end cover (3), the stator (4) and the rear end cover (7) to fixedly connect the front end cover, the stator and the rear end cover.

3. An explosion-proof hybrid stepping motor according to claim 2, wherein the strength of the screw (1) is 12.9 grade.

4. The flameproof hybrid stepping motor of claim 2, wherein the number of the screws is 8.

5. An explosion-proof hybrid stepping motor according to claim 1, wherein the explosion-proof enclosure (5) is connected with the front end cover (3) and the rear end cover (7) by crimping respectively.

6. A flameproof hybrid stepping motor according to claim 5, wherein the flameproof housing (5) is connected with the front end cover (3) and the rear end cover (7) respectively and then silica gel is filled in gaps at the joint.

7. The flameproof hybrid stepping motor according to claim 1, wherein the front end cover (3) and the rear end cover (7) are provided with spigots matched with inner holes of the stator (4) to ensure concentricity of the rotor (6) and the stator (4).

8. An explosion-proof hybrid stepping motor according to claim 1, wherein a gap is provided between the stator (4) and the explosion-proof casing (5).

9. The flameproof hybrid stepping motor of claim 1, wherein the wire outlet hole (8) is filled with sealant after a cable passes through the wire outlet hole.

10. The flameproof hybrid stepping motor according to claim 1, wherein a through hole is formed in the surface of the front end cover (3) at a position corresponding to the rotor (6), and an oil seal (2) for enhancing the sealing property is arranged in the through hole.