Outer spherical surface sealing bearing

Abstract

The utility model relates to the technical field of bearing sealing, in particular to an outer spherical surface sealing bearing, which comprises an inner ring and an outer ring, the outer ring is arranged on the outer side of the inner ring, an installation space is arranged between the inner ring and the outer ring, the outer side surface of the inner ring and the inner side surface of the outer ring are respectively provided with a circular groove, and the circular grooves are communicated with the installation space. A ball is arranged between the circular groove of the inner ring and the circular groove of the outer ring, two protective covers are arranged on the outer side face of the inner ring and symmetrically arranged on the two sides of the ball, and two sealing covers are arranged between the inner ring and the outer ring and symmetrically arranged on the two sides of the ball. The sealing covers are located between the two protective covers, sealing rings are arranged on the inner sides of the two sealing covers, dustproof parts are arranged between the adjacent sealing covers and the protective covers, the dustproof parts can prevent external dust and other impurities from making contact with the sealing rings in the bearing, and the probability that the bearing loses efficacy due to the dust and other impurities is reduced; and the service life of the bearing is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of bearing sealing technology, and in particular to an external spherical sealed bearing. Background Technology

[0002] Bearing seals are used to prevent dust, water, and other debris from entering the bearing and to prevent lubricant loss. Existing spherical roller bearings have advantages such as high load-bearing capacity, compact structure, convenient installation and removal, and strong adaptability. Therefore, spherical roller bearings are used in agriculture, mining machinery, and various types of conveying devices. However, due to different external environments, internal contamination of the bearings can occur. Therefore, sealing and dust prevention of spherical roller bearings are very important.

[0003] Existing spherical roller bearings have dustproof plates on both sides between the inner and outer rings, with a sealing ring inside each dustproof plate. There is a gap between the dustproof plate and the outer ring, allowing external dust and other impurities to easily enter the bearing through this gap. This corrosion causes the sealing and dustproof function to fail, resulting in the loss of internal lubricant and allowing dust and impurities to enter the bearing, ultimately leading to bearing failure and reduced bearing life. Utility Model Content

[0004] In order to prevent the sealing ring inside the bearing from being corroded and extend the service life of the bearing, this utility model provides an external spherical sealed bearing.

[0005] This utility model provides an external spherical sealed bearing, which adopts the following technical solution:

[0006] An external spherical sealed bearing includes an inner ring and an outer ring, the outer ring being disposed outside the inner ring, and an installation space between the inner and outer rings. Both the outer surface of the inner ring and the inner surface of the outer ring are provided with circular grooves. A ball is disposed between the circular grooves of the inner and outer rings. Two protective covers are disposed on the outer surface of the inner ring, symmetrically disposed on both sides of the ball, extending to the inner surface of the outer ring. A rotational clearance exists between the protective covers and the outer ring. Two sealing covers are disposed between the inner and outer rings, symmetrically disposed on both sides of the ball, located between the two protective covers. A sealing ring is disposed on the inner side of each of the two sealing covers. A dustproof component is disposed between adjacent sealing covers and protective covers.

[0007] By adopting the above technical solution, when dust and other impurities enter the protective cover during bearing operation, the dustproof component between the protective cover and the sealing cover can prevent external dust and other impurities from contacting the sealing ring inside the bearing. This reduces the probability of the sealing ring being corroded by dust and other impurities and entering the bearing, leading to bearing failure, and extends the service life of the bearing.

[0008] Furthermore, one end of the dustproof component is fixedly connected to the inner side of the protective cover, and the end of the dustproof component away from the protective cover abuts against the sealing cover.

[0009] Furthermore, a retainer is provided within the mounting space of the inner and outer rings, and the retainer is provided with a spherical groove adapted to the ball bearing, the ball bearing being installed in the spherical groove.

[0010] Furthermore, two steps are provided on the outer surface of the inner ring, and the two steps are symmetrically arranged on both sides of the ball. The end face of the protective cover near the ball abuts against the step.

[0011] Furthermore, the outer surface of the inner ring is provided with two sets of straight knurling arranged in a ring array. The straight knurling is provided on the side of the step away from the ball. The end face of the protective cover near the inner ring is provided with a groove that matches the straight knurling. The protective cover is installed on the straight knurling on the outer side of the inner ring.

[0012] Furthermore, the protective cover has a bent section near the outer ring, and the bent section extends to the inner side of the outer ring.

[0013] Furthermore, two mounting grooves are provided on the inner side of the outer ring, and the two mounting grooves are symmetrically arranged on both sides of the ball. The end of the sealing cover near the outer ring is provided with a mounting head that matches the mounting groove, and the mounting head of the sealing cover is installed in the mounting groove of the outer ring.

[0014] Furthermore, the sealing cover has an inclined surface, the sealing ring is located on the inclined surface of the sealing cover, and three evenly distributed sealing strips are provided at one end of the sealing ring near the inner ring. The sealing strips are circular ring structures and abut against the outer surface of the inner ring.

[0015] Furthermore, the axial length of the inner ring is greater than the axial length of the outer ring, and the inner ring has a set of threaded holes arranged in a ring array at the end away from the outer ring in the axial direction, and a set of bolts are installed in the threaded holes.

[0016] In summary, this utility model has at least one of the following beneficial technical effects:

[0017] 1. By incorporating dustproof components, the dustproof components between the protective cover and the sealing cover can prevent external dust and other impurities from contacting the sealing ring inside the bearing. This reduces the probability of the sealing ring being corroded by dust and other impurities and entering the bearing, leading to bearing failure and extending the bearing's service life.

[0018] 2. By setting a bend in the protective cover, external dust and other impurities are not easily allowed to enter between the protective cover and the sealing cover, thus ensuring the normal operation of the bearing.

[0019] 3. By setting the steps and straight knurling, the steps can position the protective cover, and the straight knurling engages with the protective cover at the contact point, which improves the stability of the protective cover after installation and reduces the probability of the protective cover slipping. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this application;

[0021] Figure 2 This is a cross-sectional structural diagram of the entire application;

[0022] Figure 3 This application Figure 2 Enlarged structural diagram at point A;

[0023] Reference numerals: 100, inner ring; 110, circular groove; 120, step; 130, straight knurling; 140, threaded hole; 200, outer ring; 210, mounting groove; 300, ball; 310, cage; 400, protective cover; 410, bent section; 500, sealing cover; 510, mounting head; 520, bevel; 600, sealing ring; 610, sealing strip; 700, dustproof component; 800, bolt. Detailed Implementation

[0024] The technical solutions of this utility model are clearly and completely described below through specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] The following combination Figures 1-3 The present invention will be described in further detail below.

[0026] This embodiment discloses an external spherical sealed bearing, referring to... Figures 1-3The device includes an inner ring 100 and an outer ring 200, with the outer ring 200 located outside the inner ring 100. There is an installation space between the inner ring 100 and the outer ring 200. Circular grooves 110 are provided on the outer surface of the inner ring 100 and the inner surface of the outer ring 200. Ball bearings 300 are positioned between the circular grooves 110 of the inner ring 100 and the outer ring 200. Two protective covers 400 are provided on the outer surface of the inner ring 100, symmetrically arranged on both sides of the ball bearings 300. The protective covers 400 extend to the inner surface of the outer ring 200, and there is a rotational clearance between the protective covers 400 and the outer ring 200. The protective covers 400 are close to the outer ring. One end of the bearing 200 is provided with a bent section 410, which extends to the inner side of the outer ring 200. The protective cover 400 provides the first layer of dust protection for the inside of the bearing. Two sealing covers 500 are provided between the inner ring 100 and the outer ring 200. The two sealing covers 500 are symmetrically arranged on both sides of the ball 300. The sealing covers 500 are located between the two protective covers 400. A sealing ring 600 is provided on the inner side of each of the two sealing covers 500. A dustproof component 700 is provided between the adjacent sealing covers 500 and the protective covers 400. The dustproof component 700 provides the second layer of dust protection and sealing for the inside of the bearing. The sealing ring 600 provides the third layer of dust protection and sealing for the inside of the bearing.

[0027] Thus, when the bearing is in operation, when dust or other impurities enter the protective cover 400, the dustproof component 700 between the protective cover 400 and the sealing cover 500 can prevent external dust or other impurities from contacting the sealing ring 600 inside the bearing, reducing the probability that the sealing ring 600 will be corroded by dust or other impurities and enter the bearing, leading to bearing failure, and extending the service life of the bearing.

[0028] Reference Figures 2-3 In this embodiment, one end of the dustproof component 700 is fixedly connected to the inner side of the protective cover 400, and the end of the dustproof component 700 away from the protective cover 400 abuts against the sealing cover 500.

[0029] In this way, the dustproof component 700 blocks dust and impurities, preventing external dust and impurities from entering at the sealing cover 500 and damaging the sealing ring 600.

[0030] Reference Figure 2 In this embodiment, a retainer 310 is provided in the mounting space of the inner ring 100 and the outer ring 200. The retainer 310 is annular and has a spherical groove adapted to the ball 300. The ball 300 is installed in the spherical groove.

[0031] Thus, the ball 300 is installed inside the cage 310, and the ball 300 can rotate inside the cage 310. The cage 310 limits the position of the ball 300 to ensure the stability of the bearing operation.

[0032] Reference Figures 2-3In this embodiment, two steps 120 are provided on the outer surface of the inner ring 100. The two steps 120 are symmetrically arranged on both sides of the ball 300. The end face of the protective cover 400 near the ball 300 abuts against the step 120. Two sets of straight knurling 130 distributed in a ring array are provided on the outer surface of the inner ring 100. The straight knurling 130 is located on the side of the step 120 away from the ball 300. The end face of the protective cover 400 near the inner ring 100 is provided with a groove that matches the straight knurling 130. The protective cover 400 is installed on the straight knurling 130 on the outer side of the inner ring 100.

[0033] In this way, the step 120 can position the protective cover 400 to prevent the protective cover 400 from moving in the axial direction of the inner ring 100 after installation. The knurled 130 engages with the protective cover 400 at the contact point, which improves the stability of the protective cover 400 after installation and reduces the probability of the protective cover 400 slipping.

[0034] Reference Figures 2-3 In this embodiment, two mounting grooves 210 are provided on the inner side of the outer ring 200. The two mounting grooves 210 are symmetrically arranged on both sides of the ball bearing 300. The sealing cover 500 is provided with a mounting head 510 that matches the mounting groove 210 at one end near the outer ring 200. The mounting head 510 of the sealing cover 500 is installed in the mounting groove 210 of the outer ring 200. A slope 520 is provided on the sealing cover 500. The sealing ring 600 is disposed at the slope 520 of the sealing cover 500. The sealing ring 600 is close to the inner ring 1. One end of the 00 is provided with three evenly distributed sealing strips 610. The sealing strips 610 are circular ring structures and abut against the outer surface of the inner ring 100. Specifically, the sealing cover 500 has a first vertical section, an inclined section and a second vertical section. The first vertical section, the inclined section and the second vertical section are sequentially arranged from the outer ring 200 to the inner ring 100. The first vertical section, the inclined section and the second vertical section are integrally formed. The sealing ring 600 is provided on the side of the inclined section and the second vertical section near the ball 300.

[0035] Thus, the contact point between the sealing strip 610 and the inner ring 100 is compressed into an L-shaped structure, ensuring tight contact with the inner ring 100. The three sealing strips 610 enhance the sealing and dustproof effect inside the bearing, preventing lubricant from flowing out of the bearing and external dust from entering the bearing, thus significantly improving the service life of the bearing.

[0036] The axial length of the inner ring 100 is greater than the axial length of the outer ring 200. The inner ring 100 has a set of threaded holes 140 arranged in a ring array at the end away from the outer ring 200 in the axial direction. A set of bolts 800 are installed in the threaded holes 140.

[0037] The implementation principle of this embodiment is as follows:

[0038] When installing the outer spherical bearing, first fit the outer ring 200 onto the outside of the inner ring 100, with the inner side of one side of the outer ring 200 close to the outer side of the inner ring 100, leaving a larger gap on the other side of the outer ring 200. Place the balls 300 between the outer ring 200 and the inner ring 100, and complete the installation of the balls 300 by oscillation and rotation. Then install the cage 310 on the balls 300. After installation, fix the sealing cover 500 and the sealing ring 600 together, and place the sealing cover 500 with the sealing ring 600 on the inner ring 100 and... Between the outer rings 200, push the sealing cover 500 towards the ball 300 until the mounting head 510 of the sealing cover 500 enters the mounting groove 210 of the outer ring 200. At this point, the positioning and installation of the sealing cover 500 is completed. Securely connect the dustproof part 700 to the protective cover 400. Install the two protective covers 400 at the position of the knurled 130. The end face of the protective cover 400 near the ball 300 abuts against the step 120. The installation and positioning of the protective cover 400 are completed. The above operations complete the installation of the entire outer spherical bearing.

[0039] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A spherical sealed bearing, characterized in that, The device includes an inner ring and an outer ring, with the outer ring positioned outside the inner ring. An installation space exists between the inner and outer rings. Both the outer and inner sides of the inner and outer rings have circular grooves. A ball bearing is positioned between the circular grooves of the inner and outer rings. Two protective covers are symmetrically positioned on either side of the ball bearing on the outer side of the inner ring. The protective covers extend to the inner side of the outer ring, and there is a rotational clearance between the protective covers and the outer ring. Two sealing covers are symmetrically positioned on either side of the ball bearing between the inner and outer rings. Each sealing cover has a sealing ring on its inner side. A dustproof component is positioned between adjacent sealing covers and protective covers.

2. The spherical sealed bearing according to claim 1, characterized in that, One end of the dustproof component is fixedly connected to the inner side of the protective cover, and the end of the dustproof component away from the protective cover abuts against the sealing cover.

3. The spherical sealed bearing according to claim 1, characterized in that, A retainer is provided within the mounting space of the inner and outer rings, and the retainer is provided with a spherical groove adapted to the ball bearing, the ball bearing being installed in the spherical groove.

4. The spherical sealed bearing according to claim 1, characterized in that, Two steps are provided on the outer surface of the inner ring. The two steps are symmetrically arranged on both sides of the ball. The end face of the protective cover near the ball abuts against the step.

5. The spherical sealed bearing according to claim 1, characterized in that, The outer surface of the inner ring is provided with two sets of straight knurling arranged in a ring array. The straight knurling is located on the side of the step away from the ball. The end face of the protective cover near the inner ring is provided with a groove that matches the straight knurling. The protective cover is installed on the straight knurling on the outer side of the inner ring.

6. The spherical sealed bearing according to claim 1, characterized in that, The protective cover has a bent section near the outer ring, and the bent section extends to the inner side of the outer ring.

7. The spherical sealed bearing according to claim 1, characterized in that, The outer ring has two mounting grooves on its inner side, which are symmetrically arranged on both sides of the ball. The sealing cap has a mounting head that matches the mounting groove at one end near the outer ring, and the mounting head of the sealing cap is installed in the mounting groove of the outer ring.

8. The spherical sealed bearing according to claim 1, characterized in that, The sealing cover has an inclined surface, and the sealing ring is located on the inclined surface of the sealing cover. Three evenly distributed sealing strips are provided at one end of the sealing ring near the inner ring. The sealing strips are circular rings and abut against the outer surface of the inner ring.

9. The spherical sealed bearing according to any one of claims 1-8, characterized in that... The axial length of the inner ring is greater than the axial length of the outer ring. The inner ring has a set of threaded holes arranged in a ring array at the end away from the outer ring in the axial direction, and a set of bolts are installed in the threaded holes.

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