阅读说明：本技术 一种直流防止粉末沉积的碳刷电动机以及转子结构 (Carbon brush motor and rotor structure for preventing powder deposition by direct current ) 是由 王晓欣 于 2019-09-23 设计创作，主要内容包括：本发明涉及碳刷电机领域,尤其涉及一种直流防止粉末沉积的碳刷电动机以及转子结构。转子(1)上布置有后风轮(21)和前风轮(22),所述的后风轮(21)和前风轮(22)布置在转子的两侧；后风轮(21)和前风轮(22)能够在随着转子转动的时候阻挡粉末附着在换向器(3)槽和电机中后段腔室中。采用如上技术方案的本发明,相对于现有技术有如下有益效果：后风轮(21)和前风轮(22)二者协同阻挡,能起到更好的阻挡作用,避免粉末积累在换向器(3)槽和电机中后段腔室中。(The invention relates to the field of carbon brush motors, in particular to a direct-current carbon brush motor capable of preventing powder deposition and a rotor structure. The rotor (1) is provided with a rear wind wheel (21) and a front wind wheel (22), and the rear wind wheel (21) and the front wind wheel (22) are arranged on two sides of the rotor; the rear wind wheel (21) and the front wind wheel (22) can prevent powder from being attached to the groove of the commutator (3) and a middle-rear-section cavity of the motor when rotating along with the rotor. Compared with the prior art, the invention adopting the technical scheme has the following beneficial effects: the rear wind wheel (21) and the front wind wheel (22) are blocked cooperatively, so that a better blocking effect can be achieved, and powder is prevented from accumulating in a commutator (3) groove and a motor middle-rear section cavity.)

1. A carbon brush motor rotor structure for preventing powder deposition through direct current is characterized in that a rear wind wheel (21) and a front wind wheel (22) are arranged on a rotor (1), and the rear wind wheel (21) and the front wind wheel (22) are arranged on two sides of the rotor; the rear wind wheel (21) and the front wind wheel (22) can prevent powder from being attached to a groove of the commutator (3) or a rear-section cavity in the motor when rotating along with the rotor.

2. The direct current carbon brush motor rotor structure for preventing powder deposition according to claim 1, wherein the rear wind wheel (21) and the front wind wheel (22) comprise more than one blocking piece, the cross section of each blocking piece is a flat plate or a trapezoidal piece, and the flat plate or the trapezoidal piece is provided with a notch or is not provided with a notch.

3. A dc powder deposit prevention carbon brush motor rotor structure according to claim 1, characterized in that the rear wind wheel (21) and the front wind wheel (22) are blades with a curvature, and the rear wind wheel (21) and the front wind wheel (22) provide a direction to blow the powder away from the commutator (3) groove when rotating with the rotor.

4. A direct current prevents the carbon brush motor structure of the powder deposition, including stator and trochanter, the trochanter can rotate around stator, characterized by that, have arranged the back wind wheel (21) and front wind wheel (22) on the trochanter (1), said back wind wheel (21) and front wind wheel (22) are arranged on both sides of the trochanter; the rear wind wheel (21) and the front wind wheel (22) can prevent powder from being attached to a groove of the commutator (3) or a rear section cavity of the motor when rotating along with the rotor; the rotor passes through the shell to be installed, the shell comprises a front end cover, a shell body and a rear end cover, the front end cover and the shell body can be in butt joint through a spigot of an end cover butt joint installation opening (9), and the rear end cover and the shell body are in butt joint through a spigot or through threads; the middle part of the front end cover comprises a bearing mounting hole (5), and the rear end cover comprises a plurality of radiating holes (6); the front end cover also comprises two observation holes, and the spark state of the carbon brush in the shell can be seen through the two observation holes.

5. A DC powder deposition preventing carbon brush motor structure as claimed in claim 4, wherein a sealing plate (4) is fixed to the housing, the sealing plate having a rotor passing through a center portion thereof, the sealing plate allowing the rotor to rotate therethrough; the sealing plate can shield the carbon brush powder in a large area.

6. A DC powder deposition preventing carbon brush motor structure according to claim 5, wherein the corresponding position of the sealing plate is a position between the commutator (3) and the front wind wheel.

7. The structure of a dc carbon brush motor for preventing powder deposition according to claim 4, wherein the observation hole is a long stripe shape or a circular shape; the round hole can be plugged by a rubber plug or a glass plug; the glass plug is threaded and can be screwed into the circular hole.

8. A DC powder deposition preventing carbon brush motor structure according to claim 4, wherein the rear wind wheel (21) and the front wind wheel (22) each include distributed vertical blades (25) or trapezoidal blades (26).

9. A DC carbon brush motor structure for preventing powder deposition according to claim 4, further comprising a carbon powder collecting box mounting hole (27) on the side wall of the front end cover, and a carbon powder collecting box (28) for matching use, wherein the end of the carbon powder collecting box (28) comprises a carbon powder collecting box mounting opening (29), and the opening of the carbon powder collecting box mounting opening (29) can be butt-mounted on the carbon powder collecting box mounting hole (27).

10. A direct current carbon brush motor structure for preventing powder deposition according to claim 9, wherein the carbon powder collecting box (28) is installed on the front end cap with its mouth portion facing upward; the bottom wall of the front end cover slopes to the carbon powder collecting box mounting opening part (29).

Technical Field

The invention relates to the field of carbon brush motors, in particular to a direct-current carbon brush motor capable of preventing powder deposition and a rotor structure.

Background

At present, a direct current motor in an ZD6 type electric switch machine for railways is driven by a direct current series motor, and has the advantages of small volume and high output power. But the motor often has the defects of wire breakage, large dust of carbon brush, reduced motor insulation and the like in use. For the problems of wire breakage and insulation process, manufacturers adopt some new process measures in recent years, so that the problems of wire breakage fault and insulation reduction are greatly improved, and the problem of large carbon brush dust which is widely existed is not solved by effective measures all the time.

The DC series motor for assembling the ZD6 electric switch machine is called as follows: the original design of the carbon brush of the ZD6 DC motor is that an electrochemical graphite carbon brush D104 is adopted, the 50-hour abrasion loss of the carbon brush is 0.25mm, and the large abrasion loss is a main reason for generating a large amount of dust in the motor application. A large amount of carbon brush dust adheres to the motor rotor and stator coils. Especially under damp heat conditions, such phenomena occur as a major factor in the degradation of the insulation of the motor. Dust of the carbon brush is easy to accumulate between the brush holder and the carbon brush, so that the carbon brush is blocked to cause the motor to break down; when carbon brush dust is deposited in a groove of a commutator segment of the rotor commutator, inter-segment short circuit faults can be caused, so that the motor fails, and the probability of occurrence of the phenomena is high.

The manufacturers with the problems have improvement measures: if the improved carbon brush is made of metal graphite J201 or J204, but the abrasion loss of the improved carbon brush is still about 0.18 mm in 50-hour test, the problem of carbon brush dust is not well solved, but the abrasion of the outer surface of the commutator is greatly increased due to the fact that the carbon brush is large in metal content and the hardness of the carbon brush is increased, and a new problem is brought to motor maintenance.

In the maintenance of the electric switch machine, the maintenance workload of the direct current motor is a great proportion.

Direct current motors are undoubtedly prior art; ZL201820185123.0 the inventor has devised a dc motor configuration which suffers from the following drawbacks: 1. the heat dissipation function is limited; 2. the blocking effect is limited.

Disclosure of Invention

The purpose of the invention is as follows: in order to provide a carbon brush motor and a rotor structure with better direct current powder deposition prevention effect, the specific purpose is to see a plurality of substantial technical effects of the specific implementation part.

In order to achieve the purpose, the invention adopts the following technical scheme:

the first scheme is as follows:

a direct current prevents the carbon brush electric motor rotor structure of the powder deposition, characterized by that, there are rear wind wheel 21 and front wind wheel 22 on the rotor 1, said rear wind wheel 21 and front wind wheel 22 are arranged on both sides of the rotor; the rear wind wheel 21 and the front wind wheel 22 can block powder from being attached in the slots of the commutator 3 while rotating with the rotor.

The invention further adopts the technical scheme that the rear wind wheel 21 and the front wind wheel 22 comprise more than one baffle plate, the cross section of each baffle plate is a flat plate or a trapezoidal plate, and the flat plate or the trapezoidal plate is provided with a notch or is not provided with a notch.

The further technical scheme of the invention is that the rear wind wheel 21 and the front wind wheel 22 are blades with radian, and the rear wind wheel 21 and the front wind wheel 22 can provide the direction of blowing the powder to the groove far away from the commutator 3 when rotating along with the rotor.

Scheme II:

a direct current prevents the carbon brush motor structure of the powder deposition, including stator and trochanter, the trochanter can rotate around stator, characterized by that, there are rear wind wheel 21 and front wind wheel 22 on the trochanter 1, said rear wind wheel 21 and front wind wheel 22 are arranged on both sides of the trochanter; the rear wind wheel 21 and the front wind wheel 22 can prevent powder from being attached to the grooves of the commutator 3 and the middle-rear section cavity of the motor when rotating along with the rotor; the rotor passes through the shell to be installed, the shell comprises a front end cover, a shell body and a rear end cover, the front end cover and the shell body can be in butt joint through an end cover butt joint installation port 9, the butt joint mode is threaded butt joint, and the rear end cover and the shell body are also in butt joint through threads; the middle part of the front end cover comprises a bearing mounting hole 5, and the bearing mounting hole 5 comprises a circle of heat dissipation holes 6; the front end cover also comprises two observation holes, and the fire condition of the carbon brush in the shell can be seen through the two observation holes.

The further technical scheme of the invention is that a sealing plate 4 is fixed on the shell, a rotor passes through the middle part of the sealing plate, and the sealing plate enables the rotor to pass through the sealing plate to rotate; the sealing plate can be closed so that the powder is trapped.

The invention has the further technical scheme that the position corresponding to the sealing plate is the position corresponding to the commutator 3.

The invention has the further technical scheme that the observation hole is a long-strip-shaped hole or a circular hole.

The invention has the further technical scheme that the round hole can be plugged by a rubber plug or a glass plug; the glass plug is threaded and can be screwed into the circular hole.

The further technical scheme of the invention is that the rear wind wheel 21 and the front wind wheel 22 respectively comprise distributed vertical blades 25 or trapezoidal blades 26.

The invention further adopts the technical scheme that the side wall of the front end cover also comprises a carbon powder collecting box mounting hole 27 and a carbon powder collecting box 28 used in a matching way, the end part of the carbon powder collecting box 28 comprises a carbon powder collecting box mounting opening part 29, and the opening part of the carbon powder collecting box mounting opening part 29 can be in butt joint with the carbon powder collecting box mounting hole 27.

The further technical proposal of the invention is that the mouth of the carbon powder collecting box 28 is upwards arranged on the front end cover; the bottom wall of the front end cover slopes towards the toner collecting box mounting opening 29.

Compared with the prior art, the invention adopting the technical scheme has the following beneficial effects: the rear wind wheel 21 and the front wind wheel 22 are blocked cooperatively, so that a better blocking effect can be achieved, and powder is prevented from being accumulated in the groove of the commutator 3.

Drawings

To further illustrate the present invention, further description is provided below with reference to the accompanying drawings:

FIG. 1 is a schematic view of a rotor structure;

FIG. 2 is a side schematic view of a one-sided front end cap configuration;

FIG. 3 is a cross-sectional view of a one-sided front end cap structure;

FIG. 4 is a schematic side view of the structure of the housing;

FIG. 5 is a schematic view of the housing;

FIG. 6 is a wind wheel configuration view of a flat baffle;

figure 7 is one of the realisations of the rear wind wheel;

figure 8 is one of the realisations of the front wind wheel;

FIG. 9 is a schematic view of a prior art front end cap;

FIG. 10 is one of the front end cap implementations;

FIG. 11 illustrates a second implementation of a front end cap;

FIG. 12 is an implementation of a glass plug;

FIG. 13 is a schematic side view of a further implementation of the wind turbine;

FIG. 14 is a schematic front view of a further implementation of the rotor;

figures 15 and 16 are schematic views of further realisations of the rotor;

FIG. 17 is a schematic structural view of a mated front end cap;

FIG. 18 is a schematic structural view of the front end cap from another perspective;

FIG. 19 is a schematic view of a mated toner collection cartridge;

FIG. 20 is a schematic view of the blade 26 of FIGS. 15 and 16 also having a trapezoidal cross-section;

wherein: 1. a rotor; 21. a rear wind wheel; 22. a front wind wheel; 3. a commutator; 4. a connecting shaft; 5. a bearing mounting hole; 6. heat dissipation holes; 7. a bolt mounting hole; 8. an end cap; 9. the end covers are butted with the mounting ports; 10. a baffle plate; 11. a rear wind wheel mounting ring; 12. a front wind wheel mounting ring; 13. the middle part of the sealing plate; 14. a sealing plate; 15. a housing body; 16. a middle and rear section cavity of the motor; 17. a single elongated hole; 18. the two sides are separated into single long holes; 19. a single circular hole; 23. a thread; 24. a glass plug; 25. a vertical blade; 26. a trapezoidal blade; 27. a carbon powder collecting box mounting hole; 28. a carbon powder collecting box; 29. the carbon powder collecting box is arranged at the opening part.

Detailed Description

The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The patent provides a plurality of parallel schemes, and different expressions belong to an improved scheme based on a basic scheme or a parallel scheme. Each solution has its own unique features.