Conical surface PCD sliding bearing

Abstract

The utility model relates to the technical field of sliding bearings, and provides a conical surface PCD sliding bearing which comprises an inner sleeve and an outer sleeve, the inner sleeve is arranged in the outer sleeve, a transmission assembly is arranged between the inner sleeve and the outer sleeve, a supporting sleeve is arranged at the bottom of the inner sleeve, and a lubrication supplementing assembly is arranged on the outer sleeve and the supporting sleeve. The lubrication supplementing assembly comprises a supplementing cavity formed in the top of the outer sleeve, an extrusion sleeve is inserted into the supplementing cavity and attached to the top face of the outer sleeve, a plurality of inserting holes are formed in the bottom face of the outer sleeve, and the supporting sleeve is attached to the bottom face of the outer sleeve. The technical problems that in the prior art, existing design is extremely inconvenient to supplement lubrication, and lubricating oil is difficult to accurately convey to all key parts of a conical surface are solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of sliding bearings, and more specifically, to a tapered PCD sliding bearing. Background Technology

[0002] In the field of mechanical transmission, tapered PCD sliding bearings are widely used in many devices, such as high-speed rotating machinery and precision machining equipment, due to their unique structural and performance advantages. However, existing tapered PCD sliding bearings face lubrication challenges in practical use.

[0003] Due to its unique conical surface structure, traditional lubrication methods are insufficient to meet the requirements of long-term stable operation. During continuous operation, the lubricating oil inside the bearing gradually depletes, and the existing design makes replenishing lubrication extremely inconvenient. On the one hand, it is difficult to accurately deliver lubricating oil to all critical parts of the conical surface, leading to insufficient lubrication in some areas, accelerating wear, and reducing bearing life. On the other hand, replenishing lubrication often requires stopping the machine and disassembling relevant components, which not only increases maintenance costs but also affects the normal operation of the equipment and reduces production efficiency.

[0004] Therefore, developing a tapered PCD sliding bearing that is easy to replenish lubrication is key to improving the performance and stability of mechanical transmission equipment. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a tapered PCD sliding bearing, which solves the technical problem that the existing design is extremely inconvenient for supplemental lubrication and difficult to accurately deliver lubricating oil to various key parts of the tapered surface.

[0006] According to one aspect, at least one embodiment of the present disclosure provides a tapered PCD sliding bearing, comprising:

[0007] An inner sleeve and an outer sleeve, wherein the inner sleeve is disposed inside the outer sleeve;

[0008] A transmission assembly disposed between the inner sleeve and the outer sleeve;

[0009] A support sleeve and a lubrication replenishment component, wherein the support sleeve is disposed at the bottom of the inner sleeve, and the lubrication replenishment component is disposed on the outer sleeve and the support sleeve;

[0010] The lubrication replenishment assembly includes a replenishment cavity, which is located inside the top of the outer sleeve. A compression sleeve is inserted into the replenishment cavity and fits against the top surface of the outer sleeve. Several insertion holes are provided on the bottom surface of the outer sleeve, and a support sleeve fits against the bottom surface of the outer sleeve.

[0011] As a further technical solution, the support sleeve has an inner cavity, and the upper end face of the support sleeve is provided with an insertion tube. The insertion tube is inserted into the insertion hole and is connected to the interior of the supplementary cavity. Several extrusion holes are formed around the upper surface of the inner cavity.

[0012] As a further technical solution, the lower end face of the outer sleeve is provided with a threaded groove, and the bottom surface of the support sleeve is provided with a number of connecting grooves. Bolts are inserted into the connecting grooves and are screwed into the threaded grooves.

[0013] As a further technical solution, a support layer is provided around the inner sleeve side surface and around the inner sleeve side surface, and a groove is opened on the surface of the support layer, and a friction block is installed in the groove.

[0014] As a further technical solution, the transmission assembly includes several grooves, which are respectively formed around the inner surface of the outer sleeve and around the outer surface of the inner sleeve, and wear-resistant parts are installed in each groove.

[0015] As a further technical solution, both the outer surface of the inner sleeve and the inner surface of the outer sleeve are tapered structural surfaces.

[0016] As a further technical solution, the extrusion sleeve is sealed and fitted to the inner wall of the supplementary cavity.

[0017] As a further technical solution, the extrusion hole is located at the interval between the inner sleeve and the outer sleeve.

[0018] The beneficial effects of the embodiments disclosed herein are as follows:

[0019] 1. The beneficial effects of the lubrication replenishment component in this disclosure are that the replenishment chamber and the extrusion sleeve cooperate to facilitate the extrusion replenishment of lubricating oil. The design of the insertion hole, insertion tube and inner cavity allows the lubricating oil to be smoothly delivered from the replenishment chamber to the space between the inner and outer sleeves. The sealed and fitted extrusion sleeve prevents the lubricating oil from overflowing. The extrusion hole located at the interval between the inner and outer sleeves allows the lubricating oil to be accurately replenished to the key transmission parts, effectively improving the lubrication effect, reducing wear, and extending the service life of the bearing.

[0020] 2. In this disclosure, the beneficial effect of the transmission component is that the grooves on the surfaces of the outer and inner sleeves increase the contact area and improve the transmission stability. The wear-resistant parts made of polycrystalline diamond have good wear resistance and fatigue resistance, which can reduce the direct friction between the inner and outer sleeves, reduce wear, and efficiently transmit power, ensuring stable transmission of the bearings during equipment operation and guaranteeing normal equipment operation. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0022] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0023] Figure 2 This is an isometric drawing of the present disclosure;

[0024] Figure 3 This is an isometric sectional view of the present disclosure;

[0025] Figure 4 This is another isometric sectional view of this disclosure;

[0026] In the diagram: 1. Inner sleeve; 2. Outer sleeve; 3. Support sleeve; 4. Lubrication replenishment component; 4-1. Replenishment cavity; 4-2. Extrusion sleeve; 4-3. Insertion hole; 4-4. Inner cavity; 4-5. Insertion tube; 4-6. Extrusion hole; 4-7. Threaded groove; 4-8. Connecting groove; 4-9. Bolt; 4-10. Support layer; 4-11. Embedded groove; 4-12. Friction block; 5. Transmission component; 5-1. Groove; 5-2. Wear-resistant part. Detailed Implementation

[0027] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0028] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0029] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0030] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0032] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] like Figures 1-4 As shown, a tapered PCD sliding bearing according to an embodiment of the present disclosure is included:

[0034] Inner layer 1 and outer layer 2, with inner layer 1 placed inside outer layer 2;

[0035] Transmission assembly 5 is disposed between inner sleeve 1 and outer sleeve 2;

[0036] Support sleeve 3 and lubrication replenishment component 4, the support sleeve 3 is located at the bottom of the inner sleeve 1, and the lubrication replenishment component 4 is located on the outer sleeve 2 and the support sleeve 3;

[0037] Lubrication replenishment component 4 includes a replenishment cavity 4-1, which is located inside the top of the outer sleeve 2. A compression sleeve 4-2 is inserted into the replenishment cavity 4-1 and fits against the top surface of the outer sleeve 2. Several insertion holes 4-3 are provided on the bottom surface of the outer sleeve 2. A support sleeve 3 fits against the bottom surface of the outer sleeve 2 and has an inner cavity 4-4 inside. An insertion tube 4-5 is provided on the upper end face of the support sleeve 3 and is inserted into the insertion holes 4-3. The insertion tube 4-5 communicates with the inside of the replenishment cavity 4-1. The inner upper surface of sleeve 4 has several extrusion holes 4-6 around its circumference. The lower end face of sleeve 2 has a threaded groove 4-7 around its circumference. The bottom surface of support sleeve 3 has several connecting grooves 4-8 around its circumference. Bolts 4-9 are inserted into the connecting grooves 4-8 and screwed into the threaded grooves 4-7. Support layers 4-10 are provided around the side surface of inner sleeve 1 and around the inner side surface of support sleeve 3. The surface of support layers 4-10 has grooves 4-11. Friction blocks 4-12 are installed in the grooves 4-11.

[0038] In some examples, maintaining good lubrication between the inner sleeve 1 and the outer sleeve 2 during bearing use is crucial for reducing friction and extending bearing life. A lubrication replenishment component 4 is designed, which includes a replenishment cavity 4-1 opened in the top of the outer sleeve 2 to provide space for storing lubricant. A compression sleeve 4-2 is inserted into the replenishment cavity 4-1 and fits against the top surface of the outer sleeve 2. When lubricant needs to be replenished, squeezing the extrusion sleeve 4-2 forces the lubricant out of the replenishment cavity 4-1. Several insertion holes 4-3 on the bottom surface of the outer sleeve 2 mate with insertion tubes 4-5 on the support sleeve 3. The support sleeve 3 fits snugly against the bottom surface of the outer sleeve 2, with an inner cavity 4-4 inside and insertion tubes 4-5 on its upper surface. The insertion tubes 4-5 are inserted into the insertion holes 4-3 and communicate with the inside of the replenishment cavity 4-1. This structural design allows the lubricant extruded from the extrusion sleeve 4-2 to enter the inner cavity 4-4 of the support sleeve 3 through the insertion tubes 4-5. Several extrusion holes 4-6 on the upper surface of the inner cavity 4-4 serve as channels for the lubricant to enter between the inner sleeve 1 and the outer sleeve 2 of the bearing. After being extruded from the extrusion holes 4-6, the lubricant is evenly distributed between the inner sleeve 1 and the outer sleeve. The gap between the two sleeves allows for supplemental lubrication. The threaded groove 4-7 on the lower end face of the outer sleeve 2, together with the several connecting grooves 4-8 on the bottom face of the support sleeve 3 and the bolts 4-9 inserted in the connecting grooves 4-8, constitute the connection structure between the support sleeve 3 and the outer sleeve 2. By tightening the bolts 4-9, the support sleeve 3 is firmly connected to the outer sleeve 2, ensuring the stability of the entire lubrication supplementation assembly 4. The support layer 4-10 on the side surface of the inner sleeve 1 and the inner surface of the support sleeve 3, as well as the groove 4-11 on the surface of the support layer 4-10 and the friction block 4-12 installed in the groove 4-11, play a role in supporting and adjusting friction. The friction block 4-12 can be replaced according to the actual situation to adapt to different working conditions and lubrication requirements.

[0039] like Figures 1-4 As shown, this embodiment proposes that the transmission component 5 includes several grooves 5-1, which are respectively opened around the inner surface of the outer sleeve 2 and around the outer surface of the inner sleeve 1. Wear-resistant parts 5-2 are installed in each groove 5-1.

[0040] In some examples, efficient and stable transmission between the inner sleeve 1 and the outer sleeve 2 is one of the key factors ensuring the normal operation of the equipment during bearing operation. A transmission assembly 5 is designed, which includes several grooves 5-1 respectively formed around the inner surface of the outer sleeve 2 and the outer surface of the inner sleeve 1, providing a basic structural framework for the entire transmission assembly 5. The presence of these grooves 5-1 changes the contact mode between the inner sleeve 1 and the outer sleeve 2, increases the contact area, and thus improves the stability and reliability of the transmission to a certain extent. The wear-resistant part 5-2 installed in the groove 5-1 is the core component of the transmission assembly 5. The wear-resistant part 5-2 is usually made of polycrystalline diamond, which has good wear resistance and fatigue resistance. During bearing operation, relative rotation will occur between the inner sleeve 1 and the outer sleeve 2. On the one hand, it can reduce the direct friction between the inner sleeve 1 and the outer sleeve 2, reduce the degree of wear, and extend the service life of the bearing. On the other hand, the wear-resistant part 5-2 can more effectively transmit power from the inner sleeve 1 to the outer sleeve 2, or from the outer sleeve 2 to the inner sleeve 1, ensuring smooth transmission.

[0041] For example, such as Figure 3 As shown, the outer surface of the inner sleeve 1 and the inner surface of the outer sleeve 2 are both conical structural surfaces.

[0042] In some examples, a tapered structural surface is used to form a tapered transmission structure.

[0043] For example, such as Figure 3 As shown, the extrusion sleeve 4-2 is sealed and fitted to the inner wall of the supplementary cavity 4-1.

[0044] In some examples, a sealed fit prevents internal lubricant from leaking out.

[0045] For example, such as Figure 3 As shown, the extrusion holes 4-6 are located at the interval between the inner sleeve 1 and the outer sleeve 2.

[0046] In some examples, the lubricating oil overflowing from the extrusion holes 4-6 can directly enter the wear-resistant parts 5-2 and directly replenish the main transmission parts.

[0047] In actual use: First, connect and fix the support sleeve 3 and the outer sleeve 2 with bolts 4-9. When lubrication is needed, squeeze the compression sleeve 4-2 so that the lubricating oil in the replenishment chamber 4-1 enters the inner cavity 4-4 of the support sleeve 3 through the insertion tube 4-5, and then flows out from the extrusion hole 4-6 to the gap between the inner sleeve 1 and the outer sleeve 2. During the operation of the equipment, the inner sleeve 1 and the outer sleeve 2 rotate relative to each other to transmit power.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A tapered PCD sliding bearing, characterized in that, include: Inner sleeve (1) and outer sleeve (2), wherein the inner sleeve (1) is disposed inside the outer sleeve (2); A transmission assembly (5) is disposed between the inner sleeve (1) and the outer sleeve (2); The support sleeve (3) and the lubrication replenishment component (4) are provided on the outer sleeve (2) and the support sleeve (3), respectively. The lubrication replenishment component (4) includes a replenishment cavity (4-1), which is located inside the top of the outer sleeve (2). A compression sleeve (4-2) is inserted into the replenishment cavity (4-1), which fits against the top surface of the outer sleeve (2). Several insertion holes (4-3) are provided on the bottom surface of the outer sleeve (2), and the support sleeve (3) fits against the bottom surface of the outer sleeve (2).

2. The tapered PCD sliding bearing according to claim 1, characterized in that, The support sleeve (3) has an inner cavity (4-4) inside. The upper end face of the support sleeve (3) is provided with a tube (4-5). The tube (4-5) is inserted into the insertion hole (4-3). The tube (4-5) is connected to the interior of the supplementary cavity (4-1). A number of extrusion holes (4-6) are opened around the upper surface of the inner cavity (4-4).

3. The tapered PCD sliding bearing according to claim 2, characterized in that, The lower end face of the outer sleeve (2) is provided with a threaded groove (4-7), and the bottom surface of the support sleeve (3) is provided with a plurality of connecting grooves (4-8). Bolts (4-9) are inserted into the connecting grooves (4-8), and the bolts (4-9) are screwed into the threaded grooves (4-7).

4. The tapered PCD sliding bearing according to claim 3, characterized in that, A support layer (4-10) is provided around the side surface of the inner sleeve (1) and around the inner surface of the support sleeve (3). A groove (4-11) is provided on the surface of the support layer (4-10), and a friction block (4-12) is installed in the groove (4-11).

5. A tapered PCD sliding bearing according to claim 1, characterized in that, The transmission assembly (5) includes several grooves (5-1), which are respectively formed around the inner surface of the outer sleeve (2) and around the outer surface of the inner sleeve (1). Wear-resistant parts (5-2) are installed in each groove (5-1).

6. The tapered PCD sliding bearing according to claim 1, characterized in that, The outer surface of the inner sleeve (1) and the inner surface of the outer sleeve (2) are both tapered structures.

7. A tapered PCD sliding bearing according to claim 1, characterized in that, The compression sleeve (4-2) is sealed and fitted to the inner wall of the supplementary cavity (4-1).

8. A tapered PCD sliding bearing according to claim 2, characterized in that, The extrusion holes (4-6) are located at the interval between the inner sleeve (1) and the outer sleeve (2).

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