Dust-tight sealed roller bearing device

Abstract

A dustproof sealing roller bearing device, mainly used for printing and dyeing machinery equipment, comprising an outer ring, an inner ring, an upper dustproof cover, a lower dustproof cover, a retainer, rollers and an oil inlet, the inner ring is installed in the inner ring of the outer ring, the middle space has a circular ring type retainer fixed a group of rollers inside, the outer ring and the inner ring two sides are internally capped by the same size upper dustproof cover and lower dustproof cover, the internal space is a grease layer, the outer ring two side surface ring wall each has a circular ring type outer ring groove, the upper dustproof cover and the lower dustproof cover bottom surface outer edge each is installed with a circular ring type sealing rubber ring, after closing the cover, the sealing rubber ring enters the outer ring groove, the upper dustproof cover and the lower dustproof cover bottom surface sealing rubber ring inside each has a ring type dustproof convex slot, the convex slot mouth is close to the outer ring inner wall edge side; The upper surface wall edge of the upper dustproof cover is provided with an upper cover, the upper cover has an oil inlet inside, the oil inlet is communicated with the oil inlet channel inside the upper cover. It has the characteristics of good sealing performance and long service life.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of roller bearing devices, mainly for printing and dyeing equipment instrument. BACKGROUND

[0002] In the production workshop of many printing and dyeing factories in China, a large amount of fine dust and thread will appear, and this tiny substance is easy to enter the inside of the bearing device, which can easily aggravate the wear of the bearing and shorten the service life of the equipment. At the same time, dust can also mix with internal grease, causing grease pollution, and in severe cases, carbon deposition can occur to block the oil delivery hole. At the same time, the chain and bearing device on the printing and dyeing production line can rotate at high speed, and at this time, the grease is often thrown out and overflowed from the seal, resulting in grease loss. Therefore, improving the bearing structure of the chain, reducing the penetration of dust, and reducing the loss of grease are the hot issues of concern for many printing and dyeing factories.

[0003] The existing patent (application number: CN201821093206.3) discloses a shaft positioning roller bearing, which comprises an inner ring, an outer ring, a plurality of balls, a retainer, an elastic retainer, and a plurality of balls, each of which is a cylindrical roller, and each end has a stop and a ball shaft head. The outer wall of one end of the inner ring has an inner ring stop surface, and the outer wall of the other end of the inner ring has an annular groove, and the elastic retainer is clamped in the annular groove. There is an outer ring stop surface on the inner wall of one end of the outer ring, which matches the end stop of the ball. The other end of the outer ring has an outwardly inclined bevel. A plurality of connecting columns are provided on the retainer formed by two ring-shaped pieces. Each ball shaft head socket is fixed with a circular stop piece on the outside. The utility model has the advantages of small running resistance, energy saving, less affected by low temperature environment and lack of lubricating oil, further improved bearing limit rotation, easy to install and disassemble, stable operation, low noise, long service life and the like. However, the use of retainer for sealing can not prevent dust from entering and grease from being thrown out. SUMMARY

[0004] The utility model aims at the deficiencies of the prior art device, and provides a roller bearing device with good sealing performance and long service life.

[0005] Specifically, a dustproof sealing roller bearing device is implemented, which comprises an outer ring, an inner ring, an upper dustproof cover, a lower dustproof cover, a retainer, rollers and an oil inlet, the inner ring is installed in the inner ring of the outer ring 1, a group of rollers are fixed in the inner ring by a circular retainer in the middle space, the outer ring and the inner ring are internally capped by the upper dustproof cover and the lower dustproof cover with the same shape and size on both sides, and the internal space is a grease layer; each of the outer ring side walls has a circular outer ring groove, each of the bottom surfaces of the upper dustproof cover and the lower dustproof cover is provided with a circular sealing rubber ring, the sealing rubber ring enters the outer ring groove after the covers are closed, and each of the inner sides of the sealing rubber rings of the bottom surfaces of the upper dustproof cover and the lower dustproof cover has a circular dustproof convex groove, and the convex groove is tightly close to the inner wall edge of the outer ring 1 to form a sealing step; the upper surface wall edge of the upper dustproof cover is provided with an upper cover, the upper cover has an oil inlet, the oil inlet is communicated with an oil filling channel in the upper cover, and the outlet of the oil filling channel is opposite to the grease layer.

[0006] When the dustproof sealing roller bearing is used, the oil inlet is used to inject grease into the oil inlet channel to fill the grease layer, the outer ring and the roller rotate at high speed during the operation of the bearing, and there can be a large amount of dust and thread ends in the printing and dyeing workshop, but the upper dustproof cover and the lower dustproof cover can realize good sealing effect due to the fact that the sealing rubber rings are attached to the outer ring groove and the circular dustproof convex groove is tightly close to the inner wall edge of the outer ring to form a sealing step, so that the internal grease cannot flow out and the external dust particles cannot enter.

[0007] Further, the retainer is composed of two identical circular ring plates and a group of fastening bolts to form a ring shape, and each of the circular ring plates is uniformly provided with a group of outwardly protruding semicircular polyamide wear-resistant layers.

[0008] Further, the lower cover is arranged on the surface wall edge of the lower dustproof cover.

[0009] Further, the oil inlet is a circular truncated cone with an oval cross section, which is wide at the top and narrow at the bottom.

[0010] Further, the dustproof convex grooves on the upper dustproof cover and the lower dustproof cover have the same depth in the vertical direction.

[0011] Further, a groove is arranged in the inner ring, and a groove is arranged on the outer wall of the inner ring, and the rotor rotates in the grooves of the outer ring and the inner ring.

[0012] Further, the diameter of the oil filling channel is 0.2-0.3 mm, which can effectively prevent the added grease from being thrown out again.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. By arranging three layers of protective measures of the dustproof cover, the sealing rubber ring and the dustproof convex groove, the dust and other small particles can be effectively reduced to enter the bearing interior, and the oil storage channel has very good sealing property when the roller bearing is operated at high speed, so that the grease is prevented from being thrown out.

[0015] 2. Set polyamide wear-resistant layer on retainer, use the low friction coefficient of polyamide material to reduce the friction loss between the roller and the retainer.

[0016] 3. Set the elliptical oil inlet, which can allow more lubricating oil to pass through and speed up the oil inlet speed. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the device structure.

[0018] Figure 2 It is an appearance diagram of the device.

[0019] Figure 3 It is a schematic diagram of the bearing internal structure.

[0020] Figure 4 It is a schematic diagram of the roller installed in the retainer.

[0021] In the figure: 1 outer ring, 1-1 outer ring groove, 2 inner ring, 3 upper dust cover, 4 lower dust cover, 5 dust convex slot, 6 sealing rubber ring, 7 upper cover, 7-1 cap, 8 lower cover, 9 retainer, 9-1 retainer outer ring, 9-2 fastening bolt, 9-3 polyamide wear-resistant layer, 10 roller, 11 oil inlet, 11-1 oil inlet channel, 12 grease layer DETAILED DESCRIPTION Example 1

[0022] As Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, a dustproof sealing roller bearing device comprises an outer ring 1, an inner ring 2, an upper dust cover 3, a lower dust cover 4, a retainer 9, a roller 10 and an oil inlet 11, the inner ring 2 is installed in the inner ring of the outer ring 1, a circular ring type retainer 9 is fixed in the inner ring 2, the retainer 9 is composed of two identical circular ring pieces and a group of fastening bolts 9-2, the circular ring pieces are uniformly provided with a group of outwardly protruding semicircular polyamide wear-resistant layers 9-3; the outer ring 1 is provided with a groove inside, the outer ring wall of the inner ring 2 is provided with a groove, the rotor rotates in the groove of the outer ring 1 and the inner ring 1, the upper dust cover 3 and the lower dust cover 4 with the same shape and size are used to seal the inside of the two sides of the outer ring 1 and the inner ring 2, and the internal space is an oil layer 12; the outer ring wall of the two sides of the outer ring is provided with a circular ring groove 1-1, the bottom surface of the outer edge of the upper dust cover 3 and the lower dust cover 4 is provided with a circular ring sealing rubber ring 6, the sealing rubber ring 6 enters the circular ring groove 1-1 after the cover is closed, the inner side of the sealing rubber ring 6 of the bottom surface of the upper dust cover 3 and the lower dust cover 4 is provided with a circular dustproof convex groove 5, the convex groove is tightly close to the inner wall edge of the outer ring 1 to form a sealing step, the depth of the dustproof convex groove 5 on the upper dust cover 3 and the lower dust cover 4 in the vertical direction is the same; the upper surface wall edge of the upper dust cover 3 is provided with an upper cover 7, the upper cover 7 is provided with an oil inlet 11, the oil inlet 11 is a circular truncated cone with an oval cross section, the width of the top is larger than that of the bottom, the oil inlet 11 is communicated with an oil filling channel 11-1 in the upper cover, the outlet of the oil filling channel 11-1 is opposite to the oil layer 12, the diameter of the channel of the oil filling channel 11-1 is 0.2-0.3 mm, which can effectively prevent the added oil from being thrown out again; the cover 8 is arranged on the surface wall edge of the lower dust cover 4.

[0023] When the dustproof sealing roller bearing is used, the oil inlet 11 is used to inject oil into the oil inlet channel 11-1 to fill the oil layer 12, when the bearing works, the outer ring 1 and the roller 10 rotate at high speed, there can be a large amount of dust and thread ends in the printing and dyeing workshop, but the upper dust cover 3 and the lower dust cover 4 can realize good sealing effect due to the fact that the sealing rubber ring 6 is tightly close to the outer ring groove 1-1 and the circular dustproof convex groove 5 is tightly close to the inner wall edge of the outer ring 1 to form a sealing step, the internal oil will not flow out, and the external dust particles are difficult to enter.

Claims

1. A dustproof sealed roller bearing device, comprising an outer ring, an inner ring, an upper dust cover, a lower dust cover, a retainer, a roller and an oil inlet, the inner ring is installed in the inner ring of the outer ring, the retainer in the form of a circular ring is fixed in the inner ring, a group of rollers are fixed in the inner ring, the outer ring and the inner ring are internally capped by the upper dust cover and the lower dust cover with the same shape and size on both sides, and the internal space is a grease layer, characterized in that: Each of the upper and lower dustproof covers is provided with a circular sealing rubber ring on the outer edge of the bottom surface, and the sealing rubber rings enter the outer ring grooves when the upper and lower dustproof covers are closed.

2. A dust-tight sealed roller bearing arrangement according to claim 1, characterised in that: The cage is composed of two identical circular ring pieces and a set of fastening bolts, and each of the circular ring pieces is uniformly provided with a set of outwardly protruding semicircular polyamide wear-resistant layers.

3. A dust-tight sealed roller bearing arrangement according to claim 1, characterized in that: The lower dustproof cover is arranged on the surface wall edge of the lower dustproof cover.

4. A dust-tight sealed roller bearing arrangement according to claim 1, characterized in that: The oil inlet is a circular truncated cone with an elliptical cross section, which is wide at the top and narrow at the bottom.

5. A dust-tight sealed roller bearing arrangement according to claim 1, characterized in that: The dustproof convex grooves on the upper and lower dustproof covers have the same depth in the vertical direction.

6. A dust-tight sealed roller bearing arrangement according to claim 1, characterized in that: The outer ring is provided with a groove, and the inner ring is provided with a groove on the outer wall.

7. A dust-tight sealed roller bearing arrangement according to claim 1, characterized in that: The diameter of the oil filling channel is 0.2-0.3 mm.

Images