Magnetic powder brake and oil seal structure

Abstract

The utility model provides a magnetic powder type brake and oil seal structure, including: brake main part and oil seal subassembly, brake main part obverse side is equipped with the oil seal installation groove that is used for installing the oil seal subassembly, oil seal subassembly includes the dustproof cover that is used for the dustproof of oil seal main part, an outer wrapping layer used for fixing a sealing rubber ring is integrally formed on the back face of the dustproof cover, and the upper portion and the lower portion of the front face of the dustproof cover are respectively provided with an installation hole used for rapidly disassembling and assembling the dustproof cover. The outer side of the outer wrapping layer is in threaded connection with the inner side of the oil seal mounting groove, so that an opening in the rear side of the sealing rubber ring gradually extrudes the outer side curved surface of the oil seal body, then after the dustproof cover is mounted, the sealing rubber ring and the oil seal body are tightly extruded, and therefore the sealing performance of the dustproof cover to the oil seal body is greatly improved; the aging speed of the oil seal main body is reduced, so that the service life of the oil seal main body is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to oil seal technical field, especially relate to a magnetic powder brake and oil seal structure. BACKGROUND

[0002] The magnetic powder brake is a kind of device using electromagnetic induction and magnetic powder characteristics to transmit torque and braking force. Its main components include stator, rotor, magnetic powder and excitation coil, and this design makes the magnetic powder brake have the advantages of fast response speed, no contact wear and high reliability. The oil seal structure is an important sealing component in the magnetic powder brake, usually made of oil-resistant rubber material, installed on the stator or shell, and closely attached to the rotor shaft. Its function is to prevent internal lubricant leakage. Since the oil seal is generally made of rubber material, the oil seal material is prone to aging after long-term use. In addition, foreign matter is easy to enter the inside of the oil seal, which makes the seal vulnerable to external environmental factors and accelerates the aging speed of the oil seal, reducing the service life of the oil seal. Therefore, a new structure is proposed to solve the above problems. SUMMARY

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a magnetic powder brake and oil seal structure to solve the problems raised in the background art.

[0004] The utility model discloses the following technical scheme realizes: a magnetic powder brake and oil seal structure, comprising: brake main body and oil seal component, the brake main body front is equipped with the oil seal installation groove for installing oil seal component, the oil seal component includes the dustproof cover for dustproof to oil seal main body;

[0005] The back of the dust cover is integrally formed with an outer cladding for fixing the sealing rubber ring, and an installation hole for quickly disassembling and assembling the dust cover is formed on the front of the dust cover.

[0006] As a preferred embodiment, the brake main body is provided with a shaft hole in the center of the front surface, and the oil seal installation groove is arranged in the annular region away from the center of the shaft hole.

[0007] As a preferred embodiment, an internal screw groove is formed on the inner side of the oil seal installation groove, and the radius length of the oil seal installation groove matches the radius length of the outer cladding.

[0008] As a preferred embodiment, the outer side of the outer cladding is provided with a screw thread matching the specification of the internal screw groove, and the width of the outer cladding matches the depth of the oil seal installation groove.

[0009] As a preferred embodiment, the inner side of the outer cladding is glued with a sealing rubber ring, and the radius length of the opening at the front side of the sealing rubber ring is greater than the radius length of the opening at the rear side.

[0010] As a preferred embodiment, the cross-sectional shape of the sealing rubber ring is trapezoidal, the radius length of the rear opening of the sealing rubber ring matches the radius length of the oil seal body, and the outer side of the outer cladding is threadedly connected with the inner side of the oil seal mounting groove, which can install the dust cover on the front side of the oil seal mounting groove and push the sealing rubber ring to extrude the outer curved surface of the oil seal body, so that the rear opening of the sealing rubber ring is gradually pressed against the outer curved surface of the oil seal body, thereby significantly improving the sealing effect of the dust cover on the oil seal body.

[0011] As a preferred embodiment, the radius length of the oil seal body matches the radius length of the shaft hole, and the width of the oil seal body matches the depth of the oil seal mounting groove.

[0012] As a preferred embodiment, the two groups of mounting holes are completely identical in specification and symmetrically arranged along the center of the dust cover, the mounting holes are provided with C-shaped mounting wrenches, and the front side of the dust cover is provided with a screw hole on the left side and the right side, respectively. The mounting wrench facilitates quick disassembly and assembly of the dust cover. After the dust cover is installed on the front side of the oil seal mounting groove by thread connection, it may gradually loosen due to vibration generated during operation of the brake body, thereby affecting the sealing effect. Therefore, the installation of the dust cover is reinforced by inserting the screws into the reserved holes on the front side of the oil seal mounting groove, thereby preventing the dust cover from falling off due to vibration.

[0013] After the above technical scheme is adopted, the beneficial effects of the present application are as follows: 1. By arranging the oil seal assembly, the oil seal assembly comprises a dust cover for sealing and dustproofing the oil seal body. During use, the oil seal body is first pressed backward into the oil seal mounting groove, then the side of the dust cover with the sealing rubber ring is directed backward, the sealing rubber ring rear opening is opposite to the front side of the oil seal body, the mounting plate wrench is inserted into the two groups of mounting holes, then the outer cladding is threadedly connected with the inner side of the oil seal mounting groove by clockwise rotation, so that the sealing rubber ring rear opening is gradually extruded against the outer curved surface of the oil seal body, and after the dust cover is installed, the sealing rubber ring is tightly extruded against the oil seal body, thereby greatly increasing the sealing property of the dust cover on the oil seal body, reducing the aging speed of the oil seal body, and thereby improving the service life of the oil seal body.

[0014] 2. By arranging the mounting holes and the outer cladding, when the dust cover needs to be disassembled, the mounting wrench is only needed to be inserted into the two mounting holes, then the dust cover is counterclockwise rotated, the outer cladding is threadedly disconnected with the oil seal mounting groove, then the two groups of screws are taken out, and the dust cover can be removed, thereby facilitating maintenance and cleaning of the dust cover. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced as follows. Obviously, the drawings described in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0016] Figure 1 It is a schematic view of the oil seal structure of the magnetic powder brake.

[0017] Figure 2 It is a schematic view of the structure of the oil seal assembly in the oil seal structure of the magnetic powder brake.

[0018] Figure 3 It is a schematic view of the structure of the back surface of the dust cover in the oil seal structure of the magnetic powder brake.

[0019] Figure 4 It is a schematic view of the position of the mounting hole and the screw hole in the oil seal structure of the magnetic powder brake.

[0020] Figure 5 It is a schematic view of the structure of the sealing rubber ring in the oil seal structure of the magnetic powder brake.

[0021] In the figure, 100 - brake body, 110 - oil seal mounting groove;

[0022] 200 - oil seal assembly, 210 - dust cover, 211 - mounting hole, 212 - screw hole, 220 - sealing rubber ring, 230 - outer cladding;

[0023] 300 - oil seal body. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0025] Please refer to Figures 1 to 5 : A magnetic powder brake and an oil seal structure, comprising: a brake body 100 and an oil seal assembly 200, the brake body 100 is provided with an oil seal mounting groove 110 for mounting the oil seal assembly 200 on the front surface, the oil seal assembly 200 comprises a dust cover 210 for dustproofing the oil seal body 300;

[0026] The back of the dust cover 210 is integrally formed with an outer cover 230 for fixing a sealing rubber ring 220, and the front of the dust cover 210 is provided with an installation hole 211 above and below for quick disassembly and assembly of the dust cover 210.

[0027] The brake body 100 is provided with a shaft hole in the center of the front, and the oil seal installation groove 110 is arranged in the annular area away from the center of the shaft hole.

[0028] The inner side of the oil seal installation groove 110 is provided with an internal screw groove, and the radius length of the oil seal installation groove 110 matches the radius length of the outer cover 230.

[0029] The outer side of the outer cover 230 is provided with a thread matching the specification of the internal screw groove, and the width of the outer cover 230 matches the depth of the oil seal installation groove 110.

[0030] The inner side of the outer cover 230 is glued with the sealing rubber ring 220, and the radius length of the opening at the front of the sealing rubber ring 220 is greater than that at the back.

[0031] The cross-sectional shape of the sealing rubber ring 220 is trapezoidal, and the radius length of the opening at the back of the sealing rubber ring 220 matches the radius length of the oil seal body 300. Through the thread connection between the outer side of the outer cover 230 and the inner side of the oil seal installation groove 110, on the one hand, the dust cover 210 can be installed on the front of the oil seal installation groove 110, and on the other hand, the sealing rubber ring 220 can be pushed to extrude the outer curved surface of the oil seal body 300, so that the opening at the back of the sealing rubber ring 220 is gradually pressed against the outer curved surface of the oil seal body 300, thereby significantly improving the sealing effect of the dust cover 210 on the oil seal body 300.

[0032] The radius length of the oil seal body 300 matches the radius length of the shaft hole, and the width of the oil seal body 300 matches the depth of the oil seal installation groove 110.

[0033] The two groups of installation holes 211 are completely identical in specification, and the two groups of installation holes 211 are symmetrically arranged along the center of the dust cover 210, and the outer side of the installation hole 211 is provided with a C-shaped installation wrench, and the front left and right sides of the dust cover 210 are respectively provided with a screw hole 212. The installation wrench is convenient for quick disassembly and assembly of the dust cover 210. After the dust cover 210 is installed on the front of the oil seal installation groove 110 by thread connection, it may gradually loosen due to vibration generated during operation of the brake body 100, affecting the sealing effect. Therefore, the screws are inserted into the reserved holes on the front of the oil seal installation groove 110 and the screw holes 212 respectively, thereby reinforcing the installation of the dust cover 210 and preventing the dust cover 210 from falling off due to vibration.

[0034] Example 1: Please refer to Figures 1 to 4In actual use, the oil seal assembly 200 includes a dust cover 210 for dustproof sealing of the oil seal body 300. The dust cover 210 is in an integrated structure with the outer cover 230 at the rear side thereof. The inner side of the outer cover 230 is glued with a sealing rubber ring 220. The radius length of the opening at the rear side of the sealing rubber ring 220 matches the radius length of the front side of the oil seal body 300. In use, the front side of the oil seal body 300 is first pressed slightly into the inside of the opening at the rear side of the sealing rubber ring 220, and the front side of the oil seal body 300 is kept inside the opening at the rear side of the sealing rubber ring 220 without falling out. Then the dust cover 210 is picked up, and the side of the dust cover 210 with the sealing rubber ring 220 is directed backward and inserted into the oil seal mounting groove 110. At this time, the outer side of the outer cover 230 is in contact with the inner side of the oil seal mounting groove 110. Then the installation wrench is picked up, the installation wrench is inserted into the two groups of installation holes 211, and the installation wrench is rotated clockwise to drive the dust cover to rotate clockwise and to threadedly connect the outer side of the outer cover 230 with the inner side of the oil seal mounting groove 110.

[0035] During the threadedly connecting process of the outer side of the outer cover 230 with the inner side of the oil seal mounting groove 110, the sealing rubber ring 220 drives the oil seal body 300 to gradually move backward. When the back of the oil seal body 300 abuts against the rear inner wall of the oil seal mounting groove 110, the sealing rubber ring 220 continues to rotate and move backward. Since the radius length of the opening at the rear side of the sealing rubber ring 220 is greater than the radius length of the opening at the front side thereof, when the oil seal body 300 is inserted into the sealing rubber ring 220, the diameter of the front side of the sealing rubber ring 220 gradually decreases, so that the oil seal body 300 is tightly clamped inside the sealing rubber ring 220, thereby greatly increasing the sealing effect of the dust cover 210 on the oil seal body 300, reducing the influence of the external environment on the oil seal body 300, delaying the aging of the oil seal body 300, and prolonging the service life of the oil seal body 300.

[0036] Embodiment 2: Please refer to Figures 2 to 4 When the threadedly connecting of the outer side of the outer cover 230 with the inner side of the oil seal mounting groove 110 is completed, the dust cover 210 is installed on the front of the oil seal mounting groove 110, and the two groups of screw holes 212 are respectively opposite to the reserved hole positions that are opened on the front of the oil seal mounting groove 110. At this time, the two screws are picked up, and the two screws are respectively rotated and installed into the screw holes 212 and the reserved holes by means of a screwdriver, thereby completing the installation of the dust cover 210.

[0037] When the oil seal needs to be replaced, the above steps are reversed, first remove the two sets of screws, then use the installation wrench to rotate the dust cover 210 in the reverse direction, so that the outer layer 230 is disconnected from the threaded connection with the oil seal mounting groove 110, and the dust cover 210 is pulled outward, at this time the sealing rubber ring 220 will be taken out with the oil seal, so it is convenient to replace the oil seal, improve the replacement efficiency, and it is convenient to disassemble and assemble the dust cover 210, and it is convenient to maintain the dust cover 210.

[0038] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A magnetic powder brake and oil seal structure comprising: The brake body (100) and the oil seal assembly (200) are characterized in that: the brake body (100) is provided with an oil seal mounting groove (110) on the front surface for mounting the oil seal assembly (200), and the oil seal assembly (200) comprises a dust cover (210) for dustproofing the oil seal body (300). The dust cover (210) is integrally formed with an outer cladding (230) on the back surface for fixing a sealing rubber ring (220), and the front surface of the dust cover (210) is provided with an installation hole (211) above and below for quick disassembly and assembly of the dust cover (210).

2. A magnetic powder brake and oil seal structure according to claim 1, characterized in that: The brake body (100) is provided with a shaft hole in the center of the front surface, and the oil seal mounting groove (110) is arranged in the annular area away from the center of the shaft hole.

3. A magnetic particle brake and oil seal structure according to claim 2, characterized in that: The inner side of the oil seal mounting groove (110) is provided with an internal screw groove, and the radius length of the oil seal mounting groove (110) matches the radius length of the outer cladding (230).

4. A magnetic particle brake and oil seal structure according to claim 3, characterized in that: The outer side of the outer cladding (230) is provided with a screw thread matching the specification of the internal screw groove, and the width of the outer cladding (230) matches the depth of the oil seal mounting groove (110).

5. A magnetic particle brake and oil seal structure according to claim 4, characterized in that: The inner side of the outer cladding (230) is glued with the sealing rubber ring (220), and the radius length of the opening at the front side of the sealing rubber ring (220) is greater than the radius length of the opening at the back side.

6. A magnetic particle brake and oil seal structure according to claim 5, wherein: The cross-sectional shape of the sealing rubber ring (220) is trapezoidal, and the radius length of the opening at the back side of the sealing rubber ring (220) matches the radius length of the oil seal body (300).

7. A magnetic particle brake and oil seal structure according to claim 1, wherein: The radius length of the oil seal body (300) matches the radius length of the shaft hole, and the width of the oil seal body (300) matches the depth of the oil seal mounting groove (110).

8. A magnetic particle brake and oil seal structure according to claim 1, wherein: The specifications of the two groups of installation holes (211) are completely the same, and the two groups of installation holes (211) are symmetrically arranged along the center of the dust cover (210), the outer side of the installation hole (211) is provided with a C-shaped installation wrench, and the front surface of the dust cover (210) is provided with a screw hole (212) on the left side and the right side, respectively.

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