Wear-resistant type joint bearing

Abstract

The utility model belongs to the field of joint bearing, specifically is a kind of wear-resistant joint bearing, including bearing outer ring, lengthening rod, base and dustproof board, the inside of bearing outer ring is equipped with bearing inner ring, is equipped with ball between bearing outer ring and bearing inner ring, the outside of bearing outer ring is equipped with oil injection groove, the bottom end of oil injection groove is equipped with delivery hole, delivery hole is connected with the inside of bearing outer ring, the both sides one end of dustproof board is equipped with swivel rod respectively, the both sides of the inside of oil injection groove is equipped with swivel hole respectively, two swivel rods are respectively matched in the inside of two swivel holes, the outside of swivel rod is equipped with torsion spring, one end of torsion spring is connected on swivel hole inner wall, the other end is connected on swivel rod. The utility model is through dustproof board structure, under non-oil injection state, dustproof board is automatically closed under the pre-tightening force of torsion spring, and it is strictly covered oil injection groove, forms a physical barrier, can effectively isolate external dust, moisture, impurity and other pollutants and enter bearing interior through oil injection port.

Description

Technical Field

[0001] This utility model relates to the field of spherical plain bearings, specifically a wear-resistant spherical plain bearing. Background Technology

[0002] Spherical plain bearings are a type of spherical sliding bearing. Their sliding contact surfaces consist of an inner spherical surface and an outer spherical surface, allowing them to rotate and oscillate at any angle during operation. They are manufactured using various special processes such as surface phosphating, crimping, padding, and spraying. Spherical plain bearings are characterized by high load capacity, impact resistance, corrosion resistance, wear resistance, self-aligning properties, and good lubrication.

[0003] However, the grease port of a spherical plain bearing is often exposed, and dust and impurities in the air can easily enter the bearing before and after grease filling, mixing with the grease to form abrasives, which accelerates the wear of the raceway and balls. Therefore, a wear-resistant spherical plain bearing is proposed to address the above problems. Utility Model Content

[0004] To overcome the shortcomings of existing technology, the oil filling port is often exposed, and dust and impurities in the air can easily penetrate into the bearing before and after oil filling, mixing with the grease to form abrasives, which accelerates the wear of the raceway and balls. This utility model proposes a wear-resistant spherical plain bearing.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a wear-resistant spherical plain bearing, including a bearing outer ring, an extension rod, a base and a dustproof plate. The bearing outer ring is provided with an inner bearing ring inside, and a ball bearing is provided between the bearing outer ring and the bearing inner ring. An oil filling groove is provided on the outside of the bearing outer ring, and a conveying hole is provided at the bottom end of the oil filling groove. The conveying hole connects to the inside of the bearing outer ring. A rotating rod is provided at one end of each side of the dustproof plate. A rotating hole is provided on each side of the inside of the oil filling groove. The two rotating rods are respectively fitted inside the two rotating holes. A torsion spring is sleeved on the outside of the rotating rod. One end of the torsion spring is connected to the inner wall of the rotating hole, and the other end is connected to the rotating rod.

[0006] Preferably, a stop block is provided on the upper side of the oil filling tank, and the stop block is located above the dustproof plate.

[0007] Preferably, the bottom end of the outer ring of the bearing is provided with a support post, the bottom end of the support post is provided with a second threaded hole, and two symmetrical second through holes are provided on the support post, which are connected to the second threaded hole.

[0008] Preferably, the top of the extension rod is provided with a threaded post, the threaded post has a first through hole, the bottom of the extension rod has a second threaded hole, and the extension rod has two symmetrical second through holes, which are connected to the second threaded hole.

[0009] Preferably, the top of the base is provided with a threaded post, the threaded post has a first through hole, and the bottom of the base has a first threaded hole.

[0010] Preferably, the threaded post at the top of the extension rod fits inside the second threaded hole at the bottom of the support post, with the first through hole corresponding to the second through hole.

[0011] Preferably, the threaded post located at the top of the base fits into the second threaded hole at the bottom of the extension rod, with the first through hole corresponding to the second through hole.

[0012] Preferably, bolts are provided inside the first and second through holes, and a nut is provided at one end of the bolts.

[0013] The advantages of this utility model are: 1. This utility model, through its dustproof plate structure, automatically closes under the preload of the torsion spring in the non-oiled state, tightly covering the oil filling groove and forming a physical barrier, which can effectively prevent external dust, moisture, impurities and other pollutants from entering the bearing through the oil filling port.

[0014] 2. Through the modular design of the support column, extension rod and base, this utility model allows users to flexibly combine these components according to actual installation needs. The overall support height of the bearing can be easily and continuously adjusted through threaded connections, greatly enhancing the product's adaptability to different application scenarios and equipment specifications. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the joint bearing structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the bearing outer ring of this utility model; Figure 3 This is a schematic diagram of the oil injection groove structure of the spherical bearing of this utility model; Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the exploded structure of the spherical bearing of this utility model.

[0017] In the diagram: 1. Bearing outer ring; 101. Ball; 102. Oil filling groove; 103. Conveying hole; 104. Stop block; 105. Rotary hole; 2. Bearing inner ring; 3. Support column; 4. Extension rod; 5. Base; 501. First threaded hole; 6. Bolt; 7. Nut; 8. Dustproof plate; 801. Rotary rod; 9. Torsion spring; 10. Threaded column; 1001. First through hole; 11. Second threaded hole; 1101. Second through hole. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0019] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail. This application discloses a wear-resistant spherical plain bearing. (Refer to...) Figure 1 , Figure 2 , Figure 3 and Figure 4 A wear-resistant spherical plain bearing includes an outer bearing ring 1, an extension rod 4, a base 5, and a dustproof plate 8. The outer bearing ring 1 is the main support component. An inner bearing ring 2 is located inside the outer bearing ring 1, used for mounting a shaft or connecting rod. Ball bearings 101 are positioned between the outer and inner rings, allowing for flexible rotation and oscillation, and bearing loads. An oil filling groove 102 is provided on the outside of the outer bearing ring 1, providing a centralized, easily targeted groove for guiding the grease injection nozzle. A delivery hole 103 is located at the bottom of the oil filling groove 102, connecting to the inside of the outer bearing ring 1. The delivery hole 103 serves as a lubrication channel, delivering the grease from the oil filling groove 102 to the outer bearing ring. On the inner side of the ball bearing 101 and the raceway contact surface, the dustproof plate 8 serves as the cover plate of the oil filling groove 102. Its core function is to open and close. One end of each side of the dustproof plate 8 is provided with a rotating rod 801. The inside of the oil filling groove 102 is provided with rotating holes 105 on both sides. The two rotating rods 801 are respectively engaged in the inside of the two rotating holes 105. The rotating rods 801 and the rotating holes 105 together form a hinge mechanism, allowing the dustproof plate 8 to rotate flexibly around the axis to realize the opening and closing action. A torsion spring 9 is sleeved on the outside of the rotating rod 801. One end of the torsion spring 9 is connected to the inner wall of the rotating hole 105, and the other end is connected to the rotating rod 801. The torsion spring 9 is installed on the rotating rod 801, and its two ends are respectively fixed to the rotating rod 801 and the inner wall of the rotating hole 105, utilizing the restoring force generated by its torsional deformation.

[0020] Reference Figure 4 A stop 104 is provided on the upper part of one side of the oil filling tank 102. The stop 104 is located above the dustproof plate 8. The protruding structure above the dustproof plate 8 limits the maximum opening angle of the dustproof plate 8.

[0021] Reference Figure 1 and Figure 4 The bearing outer ring 1 has a support column 3 at its bottom end. The support column 3 has a second threaded hole 11 at its bottom end. The support column 3 has two symmetrical second through holes 1101. The two second through holes 1101 are connected to the second threaded hole 11. The support column 3 is directly connected to the bottom of the bearing outer ring 1 as a basic support.

[0022] Reference Figure 4 The extension rod 4 has a threaded post 10 at the top, a first through hole 1001 on the threaded post 10, a second threaded hole 11 at the bottom end of the extension rod 4, and two symmetrical second through holes 1101 on the extension rod 4. The two second through holes 1101 are connected to the second threaded hole 11. Both ends of the extension rod 4 are machined with standard interfaces (the top is the threaded post 10, and the bottom is the second threaded hole 11), which can be used as extension parts.

[0023] Reference Figure 4 The base 5 has a threaded post 10 on its top, and a first through hole 1001 on the threaded post 10. The base 5 has a first threaded hole 501 on its bottom. The base 5 is the final mounting base plate, and the threaded post 10 on its top can be connected to the extension rod 4 or the support column 3.

[0024] Reference Figure 4 The threaded post 10 located at the top of the extension rod 4 fits into the second threaded hole 11 opened at the bottom of the support post 3. The threaded post 10 and the second threaded hole 11 form a standard threaded pair connection interface, and the first through hole 1001 corresponds to the second through hole 1101.

[0025] Reference Figure 4 The threaded post 10 located at the top of the base 5 fits into the second threaded hole 11 at the bottom of the extension rod 4. The threaded post 10 and the second threaded hole 11 form a standard threaded pair connection interface, and the first through hole 1001 corresponds to the second through hole 1101.

[0026] Reference Figure 4 Bolts 6 are provided inside the first through hole 1001 and the second through hole 1101. A nut 7 is provided at one end of the bolt 6. The first through hole 1001 and the second through hole 1101 are transverse through holes in the threaded post 10 and the component with the threaded hole. The bolt 6 and the nut 7 form a fastener, which passes through the above-mentioned aligned through holes and is tightened.

[0027] Working principle: When grease needs to be added, the operator presses the dust cover 8 down with the grease gun nozzle. The rotating rods 801 on both sides of the dust cover 8 rotate in the rotating hole 105, and the torsion spring 9 stores energy. The dust cover 8 rotates open, exposing the oil filling groove 102 below. The grease gun nozzle is aligned with the oil filling groove 102 to inject grease. Under pressure, the grease is directly delivered to the inner side of the outer ring 1 of the bearing through the delivery hole 103, and is evenly distributed on the working surface of the ball 101 and the raceway to form an oil film, thereby achieving lubrication and friction reduction.

[0028] After the oil filling is completed, the oil gun is removed. The torsion spring 9, which has been twisted, releases its stored elastic potential energy and generates a restoring torque. This automatically drives the rotating rod 801 and causes the dust cover 8 to rotate in the opposite direction until it is completely closed, tightly covering the oil filling groove 102. Under the continuous pre-tightening force of the torsion spring 9, the dust cover 8 remains closed, forming a normally closed seal. During this process, the stop block 104 limits its maximum opening angle to prevent excessive rotation.

[0029] Simultaneously, according to the required length, an extension rod 4 is added. Then, the threaded post 10 on one component is screwed into the second threaded hole 11 on another component, achieving a rigid connection between the components. When the threaded post 10 is fully screwed into the threaded hole, its first through hole 1001 will be precisely aligned with the second through hole 1101 on the other component. At this point, the bolt 6 is passed through these aligned through holes and tightened with a nut 7 at the other end. This transverse bolt 6 directly bears the shear force, effectively "locking" the threaded pair and preventing relative rotation and loosening.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A wear-resistant spherical plain bearing, comprising a bearing outer ring (1), characterized in that: The bearing outer ring (1) is provided with a bearing inner ring (2) inside, and a ball (101) is provided between the bearing outer ring (1) and the bearing inner ring (2). The outer ring (1) of the bearing has an oil injection groove (102) on its outside, and a conveying hole (103) is provided at the bottom end of the oil injection groove (102). The conveying hole (103) is connected to the inner side of the outer ring (1) of the bearing. It also includes a dustproof plate (8), with a rotating rod (801) at one end of each side of the dustproof plate (8), and rotating holes (105) are opened on both sides of the oil injection groove (102), with the two rotating rods (801) respectively fitting inside the two rotating holes (105); A torsion spring (9) is sleeved on the outside of the rotating rod (801). One end of the torsion spring (9) is connected to the inner wall of the rotating hole (105), and the other end is connected to the rotating rod (801).

2. A wear-resistant type of plain bearing according to claim 1, characterized in that: A stop (104) is provided on the upper part of one side of the oil filling tank (102), and the stop (104) is located above the dustproof plate (8).

3. A wear-resistant type of plain bearing according to claim 1, characterized in that: The bearing outer ring (1) has a support column (3) at its bottom end. The support column (3) has a second threaded hole (11) at its bottom end. The support column (3) has two symmetrical second through holes (1101) on its surface. The two second through holes (1101) are connected to the second threaded hole (11).

4. A wear-resistant type of plain bearing according to claim 3, characterized in that: It also includes an extension rod (4), the top of which is provided with a threaded post (10), the threaded post (10) is provided with a first through hole (1001), the bottom end of which is provided with a second threaded hole (11), and the extension rod (4) is provided with two symmetrical second through holes (1101), which are connected to the second threaded hole (11).

5. A plain bearing according to claim 4, characterized in that: It also includes a base (5), the top of which is provided with a threaded post (10), the threaded post (10) is provided with a first through hole (1001), and the bottom of which is provided with a first threaded hole (501).

6. A wear-resistant type of plain bearing according to claim 4, characterized in that: The threaded post (10) located at the top of the extension rod (4) fits inside the second threaded hole (11) opened at the bottom of the support post (3), and the first through hole (1001) corresponds to the second through hole (1101).

7. A wear-resistant type of plain bearing according to claim 5, characterized in that: The threaded post (10) located at the top of the base (5) fits inside the second threaded hole (11) opened at the bottom of the extension rod (4), and the first through hole (1001) corresponds to the second through hole (1101).

8. A wear-resistant type of plain bearing according to claim 7, characterized in that: The first through hole (1001) and the second through hole (1101) are provided with bolts (6), and one end of the bolts (6) is provided with nuts (7).

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