Commercial vehicle bearing

Abstract

The utility model discloses a commercial vehicle bearing, and relates to the technical field of bearings, the commercial vehicle bearing comprises an outer ring and an inner ring, a retainer is arranged between the outer ring and the inner ring, a roller is arranged in the retainer, a first dustproof cover is rotatably arranged on one side of the retainer, and an injection mechanism is arranged on one side of the surface of the first dustproof cover; the injection mechanism comprises a first guide pipe fixedly arranged in an inner cavity in one side of the first dustproof cover, a first spring is fixedly arranged on one side of an inner cavity of the first guide pipe, a first rubber plug is fixedly arranged on one side of the first spring, and a liquid injection opening is connected to one side of the first rubber plug in a clamped mode. According to the lubricating grease filling device, through mutual cooperation of the filling mechanism and the discharging mechanism, lubricating grease can be conveniently and rapidly filled, the filling time is shortened, and whether filling of the lubricating grease is completed or not can be visually judged.

Description

Technical Field

[0001] The present application relates to the field of bearing technology, and in particular to a commercial vehicle bearing. Background Art

[0002] At present, bearings are an important component in contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. In 1883, Friedrich Fischer proposed the idea of ​​using suitable production machines to grind steel balls of the same size and accurate roundness, laying the foundation for the bearing industry. O. Reynolds of the United Kingdom conducted a mathematical analysis of Thor's discovery and derived the Reynolds equation, which laid the foundation for the theory of fluid dynamic lubrication. For example, patent number CN202120056202.3 is a maintenance-free bearing, which has the following shortcomings:

[0003] The device can inject grease or lubricating liquid into the reservoir by rotating the rotating ring to align the rotating hole with the oil filling hole. After the injection is completed, the buffer block pushes the mounting block to recover under the action of elasticity, and squeezes the limit ball to slide out of the surface of the mounting block, and the rotating hole leaves the surface where the oil filling hole is located. When injecting grease, the above device needs to align the oil filling hole with the rotating hole before the grease can be added. Aligning the two will waste time and make the operation more complicated. In addition, it is impossible to judge whether the grease is added from the device. If too little grease is added, the lubrication effect of the bearing will be reduced, and the bearing wear and service life will be increased. Utility Model Content

[0004] In order to improve the time of filling grease and intuitively determine whether the grease filling is completed, the present application provides a commercial vehicle bearing.

[0005] The present application provides a commercial vehicle bearing, which adopts the following technical solution:

[0006] A commercial vehicle bearing, comprising an outer ring and an inner ring, a retainer is arranged between the outer ring and the inner ring, and a roller is arranged in the retainer, characterized in that: a first dust cover is rotatably arranged on one side of the retainer, and an injection mechanism is arranged on one side of the surface of the first dust cover;

[0007] The injection mechanism comprises a first conduit fixedly arranged in an inner cavity of one side of the first dust cover, a first spring fixedly arranged in an inner cavity of the first conduit on one side, a first rubber plug fixedly arranged in an inner cavity of the first spring on one side, and a liquid injection port clamped in an inner cavity of the first rubber plug on one side;

[0008] The discharge mechanism comprises a second conduit fixedly arranged in the inner cavity of one side of the first dust cover, a second spring fixedly arranged in the inner cavity of the second conduit on one side, and a second rubber plug fixedly arranged in the one side of the second spring.

[0009] By adopting the above technical solution, the injection mechanism pushes the first rubber plug and the first spring inward, so that the grease can enter the inner cavity of the first catheter from the injection port, thereby realizing the filling of the grease. When the grease pushes the second rubber plug and the second spring in the discharge mechanism, it indicates that the filling of the lubricating liquid is completed.

[0010] Preferably, the injection mechanism further comprises a plurality of cross bars fixedly mounted at the bottom of the first catheter, and the plurality of cross bars are equidistantly distributed in a circular pattern at the bottom of the inner cavity of the first catheter.

[0011] By adopting the above technical solution, the cross bar can leave a certain distance between the gasket and the first conduit, so that the lubricating liquid can pass through better.

[0012] Preferably, a gasket is fixedly provided on one side of the cross bar, a spring seat is fixedly provided on a surface of one side of the gasket, and the spring seat is fixedly connected to one side of the first spring.

[0013] By adopting the above technical solution, the spring seat is arranged on the gasket, which can better fix the spring and prevent the spring from moving during extrusion.

[0014] Preferably, the discharge mechanism further comprises two liquid outlets opened at both ends of the second conduit, and the opening diameters of the two liquid outlets are set to be one large and one small.

[0015] By adopting the above technical solution, the different diameters of the two liquid outlets can prevent unnecessary waste.

[0016] Preferably, a slide groove is fixedly provided in the middle of one side surface of the first dust cover, and a slide rod is slidably arranged inside the slide groove.

[0017] By adopting the above technical solution, the slide groove can enable the first dust cover to rotate, thereby reducing the wear between the first dust cover and the outer ring and the inner ring.

[0018] Preferably, the sliding rod is fixed on the outer surface of one side of the retainer, and the sliding rod is slidably connected to the sliding groove and is limited to each other.

[0019] By adopting the above technical solution, the sliding arrangement of the slide groove and the slide rod can prevent wear between the first dust cover and the retainer.

[0020] Preferably, a plurality of rubber scrapers are fixedly provided at the upper and lower parts of the slide groove, and the plurality of rubber scrapers are symmetrically arranged and fixedly connected to the surface of one side of the first dust cover.

[0021] By adopting the above technical solution, the rubber scraper can play a certain shock-absorbing role between the first dust cover and the retainer.

[0022] Preferably, a second dust cover is provided on the side of the outer ring and the inner ring away from the first dust cover, and the second dust cover has the same structure and the same installation method as the first dust cover.

[0023] By adopting the above technical solution, a first dust cover and a second dust cover are arranged on both sides of the retainer, so that the bearing can form a closed space.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. The first rubber plug in the extrusion injection mechanism is used, and the first rubber plug squeezes the first spring; the first spring squeezes the spring seat, and the first rubber plug is squeezed out of the injection port, so that the lubricating liquid can enter the bearing through the first conduit, making the filling of the grease simpler and more convenient;

[0026] 2. With the help of the sliding groove and the sliding rod slidingly arranged with each other, the first dust cover can be freely rotated to a position convenient for adding grease;

[0027] 3. The grease in the bearing squeezes the second rubber plug and the second spring, causing the grease to be discharged from the second conduit and the liquid outlet, and the grease filling can be stopped. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an overall schematic diagram of this application;

[0029] Figure 2 This is an exploded diagram of the present application;

[0030] Figure 3 This is a schematic diagram of the dust cover structure of this application;

[0031] Figure 4 This is a schematic diagram of the injection mechanism A of the present application;

[0032] Figure 5 This is a schematic diagram of the discharge mechanism B of the present application;

[0033] Figure 6 This is an explosion diagram of the injection mechanism of the present application;

[0034] Figure 7 It is a cross-sectional schematic diagram of the discharge mechanism of the present application.

[0035] Reference numerals: 1, outer ring; 2, inner ring; 3, roller; 4, first dust cover;

[0036] 5. injection mechanism; 51. injection port; 52. first rubber plug; 53. first spring; 54. first conduit; 55. cross bar; 56. gasket; 57. spring seat;

[0037] 6. discharge mechanism; 61. second spring; 62. second rubber plug; 63. second conduit; 64. liquid outlet;

[0038] 7. Retainer; 8. Rubber scraper; 9. Slide groove; 10. Slide rod; 11. Second dust cover. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-7 This application is described in further detail.

[0040] The embodiment of the present application discloses a bearing for a commercial vehicle.

[0041] Example 1

[0042] Reference Figure 1 A commercial vehicle bearing comprises an outer ring 1 and an inner ring 2, and a retainer 7 is arranged between the inner surface of the outer ring 1 and the outer surface of the inner ring 2, and a plurality of rollers 3 are arranged in the mounting groove in the middle of the outer side of the retainer 7, and a first dust cover 4 is slidably arranged on the outer surface of one side of the retainer 7, and the outer ring surface of the first dust cover 4 is in contact with the inner surface of the outer ring 1, and the inner ring surface of the first dust cover 4 is in contact with the outer surface of the inner ring 2.

[0043] Reference Figure 4 , 6 An injection mechanism 5 is provided at one side of the lower part of the outer ring of the first dust cover 4, and the injection mechanism 5 includes a first conduit 54 that penetrates and is fixed to one side of the upper part of the inner ring of the first dust cover 4, and the injection mechanism 5 also includes a plurality of cross bars 55 fixed to the bottom of the first conduit 54 on one side of the retainer 7, and the plurality of cross bars 55 are equidistantly distributed in a ring at the bottom of the inner cavity of the first conduit 54 on one side of the retainer 7, and a circular gasket 56 is welded and fixed to the surface of the plurality of cross bars 55 away from the first conduit 54, and an opening with a diameter smaller than that of the first spring 53 is opened in the middle of the circular gasket 56, and A spring seat 57 is welded and fixed to the middle part of the surface of the gasket 56 away from the retainer 7, and the inner diameter of the spring seat 57 is consistent with the outer diameter of the first spring 53, and the inner cavity of the spring seat 57 is fixedly connected to the first spring 53 located on the side of the retainer 7, and the first spring 53 is fixedly connected to the surface of the circular first rubber plug 52 on the side away from the spring seat 57, and the circular first rubber plug 52 is clamped to the injection port 51 on the side away from the first spring 53, and the outer opening surface of the injection port 51 is set to an inwardly concave arc surface, and the outer opening diameter of the injection port 51 is larger than the diameter of the circular first rubber plug 52.

[0044] Through the above arrangement, the opening diameter of the liquid injection port 51 is larger than the diameter of the circular first rubber plug 52, so that the liquid injection port 51 can better cover the first rubber plug 52, and the first rubber plug 52 is fixedly connected to the first spring 53 so that after the first rubber plug 52 is pushed away from the liquid injection port 51, it can return to the liquid injection port 51 with the help of the rebound force of the first spring 53, and the first spring 53 is fixed on the spring seat 57 so that the spring can have better deformation, and the grease can be better injected through the opening in the middle of the gasket 56, and the cross bar 55 can ensure that the gasket 56 does not affect the injection of grease and can be better fixedly connected with the first conduit 54.

[0045] It should be noted that the outer diameter of the gasket 56 is smaller than the inner diameter of the first conduit 54, and the inner diameter of the gasket 56 is smaller than the inner diameter of the first spring 53, so that the spring can be stuck inside the spring seat 57 without detaching from the inner opening of the gasket 56, so that the arrangement will not affect the injection of grease.

[0046] Reference Figure 3 , 5 , 7, the discharge mechanism 6 includes a second conduit 63 that passes through and is fixed to one side of the upper part of the inner ring of the first dust cover 4, and the first conduit 54 is opposite to the second conduit 63, and a second spring 61 is fixedly arranged on the inner cavity of the second conduit 63 away from the retainer 7, and the second spring 61 is located on the retainer 7 and fixedly connected to the surface of one side of the circular second rubber plug 62, and the circular second rubber plug 62 is covered by the opening of the liquid outlet 64 on the side of the retainer 7 on the side away from the second spring 61, and the opening of the liquid outlet 64 on the side away from the second rubber plug 62 is fixedly connected to the inner cavity surface of the second conduit 63 on the side away from the second rubber plug 62, and is also fixedly connected to the surface of the second spring 61 on the side away from the second rubber plug 62, and the opening diameter of the liquid outlet 64 on the side of the second rubber plug 62 is larger than the diameter of the second rubber plug 62, and larger than the opening diameter on the side of the second spring 61, and the opening diameter on the side of the second spring 61 is larger than the diameter of the second spring 61, and smaller than the diameter of the second conduit 63.

[0047] Through the above arrangement, the opening diameter of the liquid outlet 64 on one side of the second conduit 63 and the second rubber plug 62 is smaller than the diameter of the second rubber plug 62, which can better cover the second rubber plug 62 without affecting the extrusion and pushing of the second rubber plug 62 by the grease. When the second rubber plug 62 is pushed, it will squeeze the second spring 61. When the extrusion force of the second rubber plug 62 disappears, the second spring 61 can push the second rubber plug 62 back to its original position to achieve sealing. The small opening diameter on the other side of the liquid outlet 64 can support the second spring 61 while allowing the grease to flow out to remind that the grease filling is complete.

[0048] It should be noted that the elastic force of the second spring 61 is set to be relatively small, otherwise the internal pressure cannot push the second rubber stopper 62 .

[0049] Reference Figure 2 , 3 The first dust cover 4 is located in the middle of the one side surface of the retainer 7, and a slide groove 9 is welded and fixed thereto, and the slide groove 9 is annularly arranged on the outer surface of the middle part of the first dust cover 4, and the inner cavity surface of the slide groove 9 is slidably arranged with the outer surface of the slide rod 10, and the one side surface of the slide rod 10 is welded and fixed to the outer surface of the one side of the retainer 7, and the slide rod 10 and the slide groove 9 can slide with each other and limit each other at the same time, and a plurality of symmetrically arranged rubber scrapers 8 are fixed on the same side surface of the first dust cover 4 and the slide groove 9, and the plurality of rubber scrapers 8 are respectively arranged on the upper and lower parts of the slide groove 9, and are relatively positioned.

[0050] Through the above arrangement, the slide groove 9 is fixedly connected to the first dust cover 4, and the slide rod 10 is fixedly connected to the retainer 7. The slide groove 9 and the slide rod 10 are arranged to slide against each other and limit each other so that the first dust cover 4 will not separate from the retainer 7 when the outer ring 1 and the inner ring 2 rotate at high speed, and the rubber scraper 8 can distribute the grease on the surface of the roller 3 more evenly while following the rotation.

[0051] It should be noted that the rubber scraper 8 is made of NBR nitrile rubber, which is not only resistant to high temperatures and oil, but also has good wear resistance and high temperature resistance.

[0052] Reference Figure 2 A second dust cover 11 is provided on the side of the retainer 7 and the outer ring 1 and the inner ring 2 away from the first dust cover 4, and the second dust cover 11 and the first dust cover 4 not only have the same structure, but also are installed in the same way.

[0053] Through the above arrangement, the first dust cover 4 and the second dust cover 11 have the same structure and installation method, so that when the bearing is installed, there is no need to leave the side with the injection port specially reserved, which makes the installation of the bearing more convenient.

[0054] The implementation principle of a commercial vehicle bearing in an embodiment of the present application is as follows: when the staff is maintaining the commercial vehicle bearing, they only need to rotate the first dust cover 4 or the second dust cover 11 located between the outer ring 1 and the inner ring 2 to make the injection port 51 in the injection mechanism 5 located at a convenient operation position, and then insert the discharge plug of the grease gun into the injection port 51. The discharge plug of the grease gun pushes open the first rubber plug 52, and the grease will flow into the bearing along the inner cavity of the first conduit 54.

[0055] When the grease filling inside the bearing is almost finished, the internal pressure causes the grease to push the second rubber plug 62 outward, and the second rubber plug 62 squeezes the second spring 61 and disengages from the liquid outlet 64, allowing the grease to flow out from the liquid outlet 64. When the staff sees the grease flowing out, they can remove the discharge plug of the grease gun and release the first rubber plug 52. At this time, the first spring 53 pushes the first rubber plug 52 back to the opening of the liquid filling port 51 under the action of the rebound force.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A commercial vehicle bearing, comprising an outer ring (1) and an inner ring (2), a retainer (7) being arranged between the outer ring (1) and the inner ring (2), a roller (3) being arranged in the retainer (7), characterized in that: A first dust cover (4) is rotatably provided on one side of the retainer (7), and an injection mechanism (5) is provided on one side of the surface of the first dust cover (4); The injection mechanism (5) comprises a first conduit (54) fixedly arranged in an inner cavity on one side of the first dust cover (4); a first spring (53) is fixedly arranged on one side of the inner cavity of the first conduit (54); a first rubber plug (52) is fixedly arranged on one side of the first spring (53); and a liquid injection port (51) is clamped on one side of the first rubber plug (52); The discharge mechanism (6) comprises a second conduit (63) fixedly arranged in the inner cavity of one side of the first dust cover (4), a second spring (61) fixedly arranged in the inner cavity of the second conduit (63) on one side, and a second rubber plug (62) fixedly arranged in the inner cavity of the second spring (61).

2. A commercial vehicle bearing according to claim 1, characterized in that: The injection mechanism (5) further comprises a plurality of cross bars (55) fixedly arranged at the bottom of the first conduit (54); the plurality of cross bars (55) are equidistantly distributed in an annular manner at the bottom of the inner cavity of the first conduit (54).

3. A commercial vehicle bearing according to claim 2, characterized in that: A gasket (56) is fixedly provided on one side of the cross bar (55), a spring seat (57) is fixedly provided on the surface of one side of the gasket (56), and the spring seat (57) is fixedly connected to one side of the first spring (53).

4. A commercial vehicle bearing according to claim 1, characterized in that: The discharge mechanism (6) further comprises two liquid outlets (64) opened at both ends of the second conduit (63), and the opening diameters of the two liquid outlets (64) are arranged to be one large and one small.

5. A commercial vehicle bearing according to claim 1, characterized in that: A sliding groove (9) is fixedly provided in the middle of a surface of one side of the first dust cover (4), and a sliding rod (10) is slidably arranged inside the sliding groove (9).

6. A commercial vehicle bearing according to claim 5, characterized in that: The sliding rod (10) is fixedly arranged on the outer surface of one side of the retainer (7), and the sliding rod (10) is slidably connected with the sliding groove (9) and limits each other.

7. A commercial vehicle bearing according to claim 6, characterized in that: A plurality of rubber scrapers (8) are fixedly arranged at the upper and lower parts of the slide groove (9); the plurality of rubber scrapers (8) are symmetrically arranged and fixedly connected to a surface of one side of the first dust cover (4).

8. A commercial vehicle bearing according to claim 1, characterized in that: A second dust cover (11) is provided on the side of the outer ring (1) and the inner ring (2) away from the first dust cover (4); the second dust cover (11) has the same structure as the first dust cover (4) and is installed in the same manner.

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