Eccentric wheel motor structure with multiple protection

Abstract

The utility model provides an eccentric wheel motor structure with multiple protections, the top of the axis of an eccentric wheel body is provided with a flow guide inclined plane, and when entering an eccentric wheel motor from the outside, grinding fluid firstly passes through the flow guide inclined plane to be thrown onto the side wall of an outer cover and is then separated from the side wall of the outer cover under the action of internal airflow. The grinding liquid is drained to the outer cover ring groove and blown to the outside of the eccentric wheel motor along the drainage hole, so that crystalline foreign matters can be effectively prevented from blocking and the grinding liquid can be effectively prevented from entering; an air seal ring is further arranged between the end cover and the side face of the eccentric wheel body, the protruding edge at the bottom of the air seal ring is in interference fit with the end cover to prevent airflow from leaking, air is evenly exhausted from an air channel of the end cover through multiple air holes in the upper side of the air seal ring, reliable air curtain sealing can be formed in a gap, and grinding fluid is prevented from entering a motor body. The flying disc is arranged on the outer side of the top of the eccentric wheel body, the flying disc cover edge covers the end cover drainage ring groove, labyrinth sealing of grinding fluid is formed, and the grinding fluid can be effectively prevented from entering the bearing along the center gap of the end cover to damage the bearing.

Description

TECHNICAL FIELD

[0001] The utility model relates to eccentric grinding motor technical field, especially a kind of eccentric wheel motor structure with multiple protection. BACKGROUND

[0002] Grinding machine is inevitably disturbed by machine tool coolant, cutting fluid and machining dust in air and other impurities when applied to machine tool, and external dirt can greatly affect the grinding machine, and the first to suffer is the grinding machine bearing, as one of relatively precise components, the bearing is very strict to working condition, if there is no suitable sealing structure, the rotation accuracy, vibration, heat dissipation and other performance indicators of the grinding machine bearing will rapidly decrease or even completely lose, the bearing wears, and finally fails, and the grinding machine is also invalid when the bearing fails, and more seriously, water enters the motor, causing the motor to burn out and cannot be repaired, therefore, the sealing structure is indispensable.

[0003] The existing eccentric wheel grinder seal mainly relies on skeleton oil seal for sealing, but with long-time operation, the skeleton oil seal wears out, and cannot play a sealing role, so that water enters the bearing and motor, causing the grinding machine to be removed from the machine. The sealing in the prior art is mainly gas curtain sealing and labyrinth sealing, but the premise of using this structure is that the shaft and dust cover must be coaxial, and sealing is performed by blowing gas through small gap, and at the same time, in order to achieve the sealing effect, the vertical installation structure is different from the horizontal installation structure, and the dust cover parts cannot be universal, which is more difficult for later maintenance and replacement. Therefore, the structure of the eccentric wheel grinder needs to be further improved. SUMMARY

[0004] Therefore, the utility model provides a kind of eccentric wheel motor structure with multiple protection, and the existing technical problems are solved by designing ring groove drainage hole, gas seal ring and gas path channel and flying disc.

[0005] The utility model aims to realize the following technical scheme:

[0006] A kind of eccentric wheel motor structure with multiple protection, including motor body, press fluorine glue oil seal and the power output end power connection of motor body eccentric wheel body, still include:

[0007] End cover, it is fixedly arranged on the power output end of motor body, the center of the end cover is provided with inner hole, the inner hole is arranged on the outer side of the lower part of eccentric wheel body without contact, and the outer side of the upper end of the inner hole of the end cover is provided with sealing ring groove;

[0008] An outer cover does not contact the upper part of the eccentric wheel body and its bottom inner ring is arranged outside the cover of the end cover sealing ring groove, the first sealing ring is arranged in the sealing ring groove, the top of the outer cover is closed and a through hole corresponding to the eccentric wheel body is arranged in the center, the ring groove is arranged on the lower part of the side wall of the top of the outer cover, and the drainage hole penetrating the side wall is arranged in the side wall of the ring groove;

[0009] The top center of the eccentric wheel body is arranged with a flow guide inclined surface which is recessed to the middle.

[0010] Further, the gas seal ring is arranged between the end cover and the side surface of the eccentric wheel body, the convex edge of the bottom of the gas seal ring is arranged in the interference fit in the inner hole of the end cover, the gas seal ring is arranged outside the eccentric wheel body in the non-contact mode, a plurality of air holes are uniformly arranged on the upper side of the gas seal ring, and the gas path channel penetrating the side wall corresponding to the air hole is arranged on the side wall of the inner hole of the end cover.

[0011] Further, the gas path channel is further provided with a gas nozzle in communication with the gas path channel.

[0012] Further, the end cover sealing ring groove is further provided with a drainage ring groove, the fly disc is arranged outside the top of the eccentric wheel body, the fly disc is arranged outside the top of the eccentric wheel body in the fixed mode by pressing the second sealing ring, the cover edge extending outward is arranged on the bottom of the fly disc, and the cover edge covers and does not contact the drainage ring groove on the upper side.

[0013] The utility model discloses the beneficial effect lies in:

[0014] The utility model discloses the design flow guide inclined surface on the eccentric wheel body axle center top, when the grinding liquid enters the eccentric wheel motor inside from the outside, first passes through flow guide inclined surface, makes the grinding liquid to throw to the outer cover lateral wall, and the outer cover lateral wall has opened the ring groove, and the ring groove has opened the drainage hole, and under the action of internal airflow, the grinding liquid is guided to the outer cover ring groove and blows to the eccentric wheel motor outside along the drainage hole, can effectively prevent the crystallization foreign matter block and the grinding liquid to enter, and the gas seal ring is further arranged between the end cover and the side surface of the eccentric wheel body, the convex edge of the bottom of the gas seal ring and the end cover interference fit can prevent the airflow from leaking, and the plurality of air holes on the upper side of the gas seal ring are uniformly discharged, and the gas path channel of the end cover is discharged, can form reliable air curtain seal in the gap, prevent the grinding liquid from entering the motor body, and the fly disc is arranged outside the top of the eccentric wheel body, and the cover edge of the fly disc covers the drainage ring groove of the end cover, forms the labyrinth seal of the grinding liquid, and can effectively block the grinding liquid and enter the bearing along the center gap of the end cover.

[0015] These designs, make the grinding liquid according to the preliminary design of the track flow to the side wall of eccentric motor, with the rotating internal airflow effect, while the air curtain of the air seal ring, the labyrinth seal of the flying disc, the last fluorine rubber oil seal, multiple protection structure, effectively consider the dustproof and waterproof of vertical and horizontal installation, make the grinder can be vertical and horizontal, improve the service life of eccentric grinding motor, easy to popularization and application. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The eccentric motor structure with multiple protections in the utility model is shown in the split schematic view.

[0017] Figure 2 The eccentric motor structure with multiple protections in the utility model is shown in the axial sectional view.

[0018] The reference signs are explained as follows:

[0019] 10 is the motor body, 11 is the power output end, 20 is the fluorine rubber oil seal, 30 is the eccentric body, 31 is the flow guide slope, 40 is the end cover, 41 is the inner hole, 42 is the sealing ring groove, 43 is the air passage, 44 is the air nozzle, 45 is the drainage ring groove, 50 is the outer cover, 51 is the via hole, 52 is the ring groove, 53 is the drainage hole, 60 is the first sealing ring, 70 is the air seal ring, 71 is the convex edge, 72 is the air hole, 80 is the flying disc, 81 is the cover edge, 90 is the second sealing ring. DETAILED DESCRIPTION

[0020] The embodiments of the present disclosure will be described in detail below with reference to the drawings.

[0021] The embodiments of the present disclosure will be described in detail below with reference to the drawings.

[0022] In order to consider the dustproof and waterproof of vertical and horizontal installation of eccentric grinding motor, improve the dustproof and waterproof effect, the specific content of the utility model is shown as follows.

[0023] In combination with Figure 1 , Figure 2As shown, the utility model discloses an eccentric wheel motor structure with multiple protections, which comprises a motor body 10, an eccentric wheel body 30 connected with the motor body 10 and the power output end 11, and importantly, further comprises:

[0024] An end cover 40 is fixedly arranged on the power output end 11 of the motor body 10, and the end cover 40 is provided with an inner hole 41 at the center thereof, the inner hole 41 is arranged on the outer side of the lower part of the eccentric wheel body 30 without contact, and the outer side of the upper end of the inner hole 41 of the end cover 40 is provided with a sealing ring groove 42.

[0025] An outer cover 50 covers the upper part of the eccentric wheel body 30 without contact, and the inner ring of the bottom of the outer cover 50 is arranged outside the sealing ring groove 42 of the end cover 40, the first sealing ring 60 is arranged in the sealing ring groove 42, the top end of the outer cover 50 is closed, and the through hole 51 corresponding to the eccentric wheel body 30 is arranged at the center of the top end of the outer cover 50, the ring groove 52 is arranged on the sidewall of the lower part of the top end of the outer cover 50, and the drainage hole 53 penetrating the sidewall is arranged in the sidewall of the ring groove 52 of the outer cover 50.

[0026] The top center of the eccentric wheel body 30 located below the center through hole 51 of the top end of the outer cover 50 is provided with the flow guide inclined surface 31 recessed to the middle.

[0027] The main point of the utility model lies in that the flow guide inclined surface 31 is designed at the top of the shaft center of the eccentric wheel body 30, when the grinding liquid enters the eccentric wheel motor from the outside, the grinding liquid is first thrown to the sidewall of the outer cover 50 through the flow guide inclined surface 31, the ring groove 52 is opened on the sidewall of the outer cover 50, the drainage hole 53 is opened on the ring groove 52, and the grinding liquid is drained to the ring groove 52 of the outer cover 50 through the effect of internal airflow and is blown to the outside of the eccentric wheel motor along the drainage hole 53, so that the crystalline foreign matter blockage and the entry of the grinding liquid can be effectively prevented.

[0028] Further, in some embodiments, in order to improve the waterproof and dustproof effect of the gap between the end cover 40 and the side surface of the eccentric wheel body 30, as shown in Figure 1 、 Figure 2 The gas seal ring 70 is further arranged between the end cover 40 and the side surface of the eccentric wheel body 30, the convex edge 71 is arranged outside the bottom of the gas seal ring 70, the convex edge 71 is arranged in the inner hole 41 of the end cover 40 in interference fit, the gas seal ring 70 is arranged on the outer side of the eccentric wheel body 30 without contact, a plurality of air holes 72 are uniformly arranged on the upper side of the gas seal ring 70, the air passage 43 penetrating the sidewall corresponding to the air hole 72 is arranged on the sidewall of the inner hole 41 of the end cover 40 located on the upper side of the convex edge 71, and the interference fit between the bottom convex edge 71 of the gas seal ring 70 and the end cover 40 can prevent the outflow of airflow, the uniform outflow of the plurality of air holes 72 on the upper side of the gas seal ring 70 can discharge the airflow from the air passage 43 of the end cover 40, and a reliable air curtain seal can be formed in the gap to prevent the entry of the grinding liquid into the motor body.

[0029] Further, in some embodiments, in order to prevent the abrasive liquid and other sundries from entering the eccentric wheel motor from the air passage 43, as shown in Figure 1 , Figure 2 , the air passage 43 is further provided with an air nozzle 44 in communication with the air passage 43, the air nozzle 44 is transversely arranged and the air passage is outwardly contracted, which can effectively prevent the abrasive liquid and other sundries from entering the eccentric wheel motor from the air passage 43.

[0030] Further, in some embodiments, in order to prevent the abrasive liquid and other sundries from entering the eccentric wheel body bearing from the gap on the upper portion of the end cover 40, as shown in Figure 1 , Figure 2 , the upper end of the sealing ring groove 42 of the end cover 40 is further provided with a flow ring groove 45, the top outer side of the eccentric wheel body 30 located below the top end of the outer cover 50 is further provided with a flying disc 80, the flying disc 80 is fixedly arranged on the top outer side of the eccentric wheel body 30 by pressing the second sealing ring 90, the bottom of the flying disc 80 is outwardly extended and provided with a cover edge 81, the cover edge 81 covers and is not in contact with the upper side of the flow ring groove 45; the cover edge 81 of the flying disc 80 on the top outer side of the eccentric wheel body 30 covers the flow ring groove 45 of the end cover 40, the flow ring groove 45 can block the abrasive liquid and form a labyrinth seal of the abrasive liquid, which can effectively prevent the abrasive liquid from entering the bearing along the center gap of the end cover 40 and damaging the bearing.

[0031] The above is only for describing the embodiments of the present application and is not used for limiting the present application, for the person skilled in the art, any modification, equivalent replacement, improvement and the like made without creative labor within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A multi-protected eccentric wheel motor structure, comprising a motor body (10), an eccentric wheel body (30) pressing a fluorine rubber oil seal (20) and being power connected with a power output end (11) of the motor body (10), characterized in that, Also include: End cover (40) is fixedly arranged on the power output end (11) of the motor body (10), the center of the end cover (40) is provided with an inner hole (41), the inner hole (41) is arranged on the outer side of the lower part of the eccentric shaft body (30) without contact, the outer side of the upper end of the inner hole (41) of the end cover (40) is provided with a sealing ring groove (42); The outer cover (50) covers the upper part of the eccentric shaft body (30) without contact, and the inner ring of the bottom of the outer cover (50) is arranged outside the sealing ring groove (42) of the end cover (40), the sealing ring groove (42) is provided with a first sealing ring (60), the top of the outer cover (50) is closed, and the center is provided with a through hole (51) corresponding to the protrusion of the eccentric shaft body (30), the ring groove (52) is arranged on the sidewall of the top of the outer cover (50), and the drainage hole (53) is arranged in the sidewall of the ring groove (52) of the outer cover (50); The top center of the eccentric shaft body (30) located below the center through hole (51) of the top of the outer cover (50) is provided with a guide slope (31) recessed to the middle.

2. The eccentric motor structure with multiple protections according to claim 1, characterized in that: The gas seal ring (70) is further arranged between the end cover (40) and the side surface of the eccentric shaft body (30), the bottom of the gas seal ring (70) is provided with a convex edge (71) outward, the convex edge (71) is arranged in the inner hole (41) of the end cover (40) by interference fit, the gas seal ring (70) is arranged on the outer side of the eccentric shaft body (30) without contact, a plurality of gas holes (72) are uniformly arranged on the upper side of the gas seal ring (70), and the inner hole (41) of the end cover (40) is provided with a gas path channel (43) penetrating the sidewall corresponding to the gas hole (72) on the sidewall above the convex edge (71).

3. The eccentric motor structure with multiple protections according to claim 2, characterized in that: The gas path channel (43) is further provided with a gas nozzle (44) in communication with the gas path channel (43).

4. The eccentric motor structure with multiple protections according to claim 1, characterized in that: The upper end of the sealing ring groove (42) of the end cover (40) is further provided with a drainage ring groove (45), the outer side of the top of the eccentric shaft body (30) located below the top of the outer cover (50) is further provided with a flying disc (80), the flying disc (80) presses the second sealing ring (90) and is fixedly arranged on the outer side of the top of the eccentric shaft body (30), the bottom of the flying disc (80) extends outwardly and is provided with a cover edge (81), the cover edge (81) covers and is arranged on the upper part of the drainage ring groove (45) without contact.

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