Self-lubricating rod end knuckle bearing

Abstract

The utility model discloses a self-lubricating rod end knuckle bearing which comprises an outer sleeve, a bearing outer ring, a bearing inner ring and oil absorption cotton, and further comprises an oil injection unit, a bearing inner ring and a bearing outer ring, wherein the oil injection unit is connected between the bearing inner ring and the outer sleeve; the oil injection unit comprises an oil inlet hole which is formed in the bearing outer ring; the oil discharge hole is formed in the bearing outer ring and vertically penetrates through the oil inlet hole; the plug is detachably mounted at an outer port of the oil inlet hole; wherein the lower end of the oil discharge hole is connected with the oil absorption cotton, in daily production and life, through the arrangement of the oil inlet hole and the oil discharge hole, lubricating oil needing to be added is added into the oil inlet hole, and the lubricating oil flows into the oil absorption cotton through the oil inlet hole and the oil discharge hole.

Description

Technical Field

[0001] The utility model relates to a self-lubricating rod end joint bearing. Background Art

[0002] Spherical bearing is a spherical sliding bearing, whose sliding contact surface is an inner sphere and an outer sphere, which can rotate and swing at any angle during movement. It is made by surface phosphating, blasting, padding, spraying and other special processing methods. Spherical bearing has the characteristics of large load capacity, impact resistance, corrosion resistance, wear resistance, self-alignment, good lubrication, etc. The currently used spherical bearings have a large working friction coefficient because the materials of the inner and outer rings are both bearing steel, and the wear is more serious at the moment of starting, which affects the service life of the bearing. Therefore, it is necessary to add lubricating components to the bearing after a period of use. In the prior art, adding lubricating oil to the spherical bearing is relatively complicated, and the lubricating oil cannot be added at any time.

[0003] Existing self-lubricating spherical bearings, such as the self-lubricating spherical bearing with patent number CN212744710U, include an outer ring and an inner ring that are spherically matched, the inner ring is arranged inside the outer ring, and a through hole is provided on the inner ring, one end of the through hole is located on the outer wall of the inner ring and fits the inner wall of the outer ring, and the other end of the through hole is located on the inner wall of the inner ring, and oil-absorbing felt, a fixing plate, a rubber piston, a spring and a push rod are arranged in the through hole in sequence, the oil-absorbing felt fits the inner wall of the outer ring, the fixing plate is fixed in the through hole and supports the oil-absorbing felt, lubricating oil is sealed between the rubber piston and the fixing plate, one end of the spring is connected to the rubber piston, and the other end is connected to the push rod, the push rod extends out of the through hole and is located in the inner ring; the end of the push rod connected to the spring is also provided with a needle, the needle passes through the rubber piston and contacts the fixing plate.

[0004] This embodiment can be coated on the contact surface of the inner ring and the outer ring autonomously during the use of the bearing, has a reasonable structure, and the addition of lubricating oil is reliable, but it has the following defects:

[0005] 1. The internal lubricating oil of the spherical bearing will be consumed during use, and it is necessary to add lubricating oil to the oil-absorbing felt, which is inconvenient to operate;

[0006] 2. External dust can easily enter the bearing through the gaps, causing wear inside the bearing. Summary of the invention

[0007] The utility model aims to solve one of the technical problems existing in the prior art.

[0008] The present application provides a self-lubricating rod end joint bearing, comprising an outer sleeve, a bearing outer ring, a bearing inner ring and oil-absorbing cotton, and also comprising:

[0009] An oil injection unit, which is arranged inside the outer ring of the bearing;

[0010] The oil injection unit is connected between the bearing inner ring and the outer sleeve.

[0011] The oil injection unit consists of:

[0012] An oil inlet hole, which is arranged on the outer ring of the bearing;

[0013] An oil drain hole is provided on the outer ring of the bearing and vertically penetrates the oil inlet hole;

[0014] A plug, which is detachably mounted on the outer port of the oil inlet hole;

[0015] Wherein, the lower end of the oil drain hole is connected with the oil absorbing cotton.

[0016] Also includes:

[0017] A first annular track, which is arranged on the outer wall of the inner ring of the bearing;

[0018] A second annular track, which is arranged on the inner wall of the bearing inner ring;

[0019] An oil outlet hole, which is fixedly connected between the first annular track and the second annular track;

[0020] Among them, the first annular track matches the position of the oil-absorbing cotton.

[0021] Also includes:

[0022] an oil storage tank disposed in the outer jacket;

[0023] Wherein, the upper end of the oil drain hole is connected with the oil storage tank.

[0024] Also includes:

[0025] A dust cover, which is detachably mounted on the outer cover;

[0026] A plurality of connecting plates, which are evenly distributed on the dust cover;

[0027] Among them, the dust cover covers the outer end of the bearing outer ring and the bearing inner ring.

[0028] Also includes:

[0029] A plurality of mounting holes evenly distributed on the side wall of the outer jacket;

[0030] Among them, a plurality of connecting plates are installed on each installation hole through fasteners.

[0031] Also includes:

[0032] A rubber ring is installed on the outer end of the bearing inner sleeve.

[0033] The beneficial effects of the utility model are as follows:

[0034] 1. Through the setting of oil filling hole, oil drain hole, oil absorbing cotton, first circular track, second circular track and oil outlet hole, it is convenient for workers to add lubricating oil;

[0035] 2. The dust cover is installed on the outer sleeve by setting the dust cover, the connecting plate and the mounting hole, so as to prevent dust from entering the bearing body. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A front view of a self-lubricating rod end bearing in an embodiment of the present application;

[0037] Figure 2 A cross-sectional view of a self-lubricating rod end bearing in an embodiment of the present application;

[0038] Figure 3 A cross-sectional view of a dust cover in an embodiment of the present application;

[0039] Figure 4 It is a front view of the dust cover in the embodiment of the present application.

[0040] Reference numerals

[0041] 1-jacket, 2-bearing outer ring, 3-bearing inner ring, 4-oil absorbing cotton, 5-oil filling unit, 6-oil inlet hole, 7-oil drain hole, 8-plug, 9-first annular track, 10-second annular track, 11-oil outlet hole, 12-oil storage tank, 13-dust cover, 14-connecting plate, 15-mounting hole, 16-rubber ring, 17-connecting piece, 18-fastener. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0043] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0044] The server provided in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0045] Embodiment 1:

[0046] like Figure 1 , Figure 2 As shown, an embodiment of the present application provides a self-lubricating rod end joint bearing, including an outer sleeve 1, a bearing outer ring 2, a bearing inner ring 3 and oil-absorbing cotton 4, and also includes: an oil injection unit 5, which is arranged in the bearing outer ring 2; wherein the oil injection unit 5 is connected between the bearing inner ring 3 and the outer sleeve 1.

[0047] Furthermore, the oil filling unit 5 includes an oil inlet hole 6, which is arranged on the bearing outer ring 2; an oil drain hole 7, which is arranged on the bearing outer ring 2 and vertically penetrates the oil inlet hole 6; a plug 8, which is detachably installed on the outer end of the oil inlet hole 6; wherein the lower end of the oil drain hole 7 is connected to the oil absorbent cotton 4.

[0048] Furthermore, it also includes a first annular track 9, which is arranged on the outer wall of the bearing inner ring 3; a second annular track 10, which is arranged on the inner wall of the bearing inner ring 3; an oil outlet hole 11, which is fixedly connected between the first annular track 9 and the second annular track 10; wherein the first annular track 9 matches the position of the oil-absorbing cotton 4.

[0049] Furthermore, it also includes an oil storage tank 12 which is arranged in the outer sleeve 1; wherein the upper end of the oil drain hole 7 is connected to the oil storage tank 12.

[0050] In this embodiment of the present application, due to the adoption of the above-mentioned structure, when it is necessary to add lubricating oil to the oil-absorbing cotton 4 in the connecting end between the bearing outer ring 2 and the bearing inner ring 3, the plug 8 is first removed and the lubricating oil is poured into the oil inlet hole 6. The lubricating oil flows into the oil inlet hole 6 and continues to flow through the oil discharge hole 7. The lubricating oil flows into the oil-absorbing cotton 4 through the bottom end of the oil discharge hole 7, thereby ensuring the amount of lubricating oil inside the oil-absorbing cotton 4. During the rotation of the bearing inner ring 3, the connecting surface between the bearing inner ring 3 and the bearing outer ring 2 is lubricated. A first annular track 9 is provided on the outer wall of the bearing inner ring 3. The lubricating oil in the oil-absorbing cotton 4 will penetrate into the first annular track 9, and the lubricating oil in the first annular track 9 flows from the oil discharge hole 7 into the second annular track 10, thereby ensuring that the lubricating oil can lubricate the inner wall and outer wall of the bearing inner ring 3 at the same time, thereby improving the service life of the joint bearing. An oil storage tank 12 is provided in the outer sleeve 1. The added lubricating oil flows into the oil storage tank 12 from the upper end of the oil drain hole 7. The oil storage tank 12 stores the added lubricating oil. The lubricating oil in the oil storage tank 12 can refuel the oil-absorbing cotton 4 through the oil drain hole 7. The setting of the oil storage tank 12 can increase the cycle of adding lubricating oil.

[0051] Embodiment 2:

[0052] like Figure 3 , Figure 4 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, it also includes: a dust cover 13, which is detachably mounted on the outer sleeve 1; a plurality of connecting plates 14, which are evenly distributed on the dust cover 13; wherein the dust cover 13 covers the outer ends of the bearing outer ring 2 and the bearing inner ring 3.

[0053] Furthermore, it also includes a plurality of mounting holes 15 which are evenly distributed on the side wall of the outer shell 1 ; wherein a plurality of connecting plates 14 are mounted to each mounting hole 15 via fasteners 18 .

[0054] In this embodiment of the present application, due to the adoption of the above structure, during the use of the spherical bearing, dust from the outside will enter the spherical bearing from the gaps between the outer sleeve 1, the bearing outer ring 2 and the bearing inner ring 3, and the bearing outer ring 2 and the bearing inner ring 3 will be worn. When the spherical bearing is installed on the connecting piece 17, the protective sleeve is inserted into the connecting piece 17, and the bearing outer ring 2 and the bearing outer ring 2 are covered, the through holes of each connecting plate 14 are aligned with each mounting hole 15 of the outer sleeve 1, and the connecting plate 14 is fixed to the outer sleeve 1 using fasteners 18 (such as bolts, screws and pins, etc.), ensuring that the dust cover 13 plays a dustproof role and improving the service life of the spherical bearing.

[0055] Embodiment 3:

[0056] like Figure 3 As shown, in this embodiment, in addition to the structural features of the above-mentioned embodiments, it also includes: a rubber ring 16, which is installed on the outer end of the bearing inner sleeve.

[0057] In this embodiment of the present application, due to the adoption of the above-mentioned structure, a rubber ring 16 is installed on the outside of the inner sleeve of the bearing, and the inner wall of the rubber ring 16 is in contact with the outer wall of the connecting piece 17. When the outer ring 2 of the bearing moves, the rubber ring 16 buffers the force received in the direction of linear motion, thereby improving the stability of the joint bearing movement.

[0058] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0059] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A self-lubricating rod end joint bearing, comprising an outer sleeve (1), a bearing outer ring (2), a bearing inner ring (3) and oil-absorbing cotton (4), characterized in that: Also includes: An oil injection unit (5) arranged inside the bearing outer ring (2); The oil injection unit (5) is connected between the bearing inner ring (3) and the outer sleeve (1).

2. A self-lubricating rod end bearing according to claim 1, characterized in that: The oil injection unit (5) comprises: An oil inlet hole (6) disposed on the bearing outer ring (2); An oil drain hole (7) is arranged on the bearing outer ring (2) and vertically penetrates the oil inlet hole (6); A plug (8) which is detachably mounted on the outer end of the oil inlet hole (6); Wherein, the lower end of the oil drain hole (7) is connected to the oil absorbing cotton (4).

3. A self-lubricating rod end bearing according to claim 2, characterized in that: Also includes: A first annular track (9) arranged on the outer wall of the bearing inner ring (3); A second annular track (10) arranged on the inner wall of the bearing inner ring (3); An oil outlet hole (11) fixedly connected between the first annular track (9) and the second annular track (10); Wherein, the first annular track (9) matches the position of the oil-absorbing cotton (4).

4. The self-lubricating rod end bearing according to claim 2, characterized in that: Also includes: An oil storage tank (12) disposed inside the outer casing (1); Wherein, the upper end of the oil drain hole (7) is connected to the oil storage tank (12).

5. The self-lubricating rod end bearing according to claim 1, characterized in that: Also includes: A dust cover (13) which is detachably mounted on the outer cover (1); A plurality of connecting plates (14) which are evenly distributed on the dust cover (13); The dust cover (13) covers the outer ends of the bearing outer ring (2) and the bearing inner ring (3).

6. The self-lubricating rod end bearing according to claim 5, characterized in that: Also includes: A plurality of mounting holes (15) are evenly distributed on the side wall of the outer sleeve (1); wherein a plurality of the connecting plates (14) are mounted on each mounting hole (15) via fasteners.

7. The self-lubricating rod end bearing according to claim 1, characterized in that: Also includes: A rubber ring (16) is mounted on the outer end of the bearing inner ring (3).

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