A wear resistant bushing

Abstract

The utility model discloses a bushing of wear resistance relates to bushing technical field, including inner core, the other end of inner core is equipped with the locking block of detachable connection with shell, still be equipped with sealing assembly on locking block, the utility model discloses through the setting of vice oil cavity, sealing assembly and, after the oil injection to the preset amount, loosen the tablet, spring elastic reset, drive the pressure rod to move upwards, make the plug to reseal the liquid seepage groove, ensure the sealing performance of double oil cavity, prevent lubricating oil leakage, in the process of bushing routine operation, the lubricating oil in main oil cavity is through the hole and is continuously oil supply for sponge body, when the oil amount in main oil cavity reduces, vice oil cavity can rely on internal oil pressure or gravity effect, under the design of liquid seepage groove trace seepage, slowly supplement lubricating oil to main oil cavity, form dynamic oil supplement cycle, guarantee that sponge body is in the infiltration state all the time, continuously provide lubrication for bushing and workpiece contact surface, remarkably prolonged the wear -resisting period of bushing, improved the continuity and stability of equipment operation.

Description

Technical Field

[0001] This utility model relates to the field of bushing technology, specifically to a bushing with wear-resistant properties. Background Technology

[0002] Bushings, acting as shims, are widely used in mechanical assembly and other fields due to their advantages of easy replacement after wear, reducing the cost and difficulty of parts replacement. However, existing bushings still have many issues that need to be optimized in terms of adaptability to special scenarios and performance.

[0003] When installed in special locations, standard-sized bushings are difficult to fit, creating a demand for custom-shaped bushings. At the same time, the wear resistance of the bushings is also a major concern; poor wear resistance leads to a short service life, requiring frequent replacements, wasting manpower and time, and reducing practicality. For example, the patent publication number CN222351189U, "A Wear-Resistant Custom-Shaped Bushing," although attempting to improve lubrication and reduce wear by using a sponge and lubrication components to deliver lubricating oil, has significant shortcomings in the lubricating oil replenishment process.

[0004] This irregularly shaped bushing lacks a convenient oil replenishment channel. When the lubricating oil in the cavity is depleted, the bushing must be disassembled (by unscrewing the locking block and separating the outer shell from the inner core) to replenish it. This process is cumbersome, increasing maintenance workload and easily introducing impurities during disassembly and reassembly. This contaminates the lubricating oil and the internal structure of the bushing, disrupting the original lubrication environment, thus affecting lubrication performance, accelerating bushing wear, and shortening its service life. Utility Model Content

[0005] To solve the above-mentioned technical problems, a wear-resistant bushing is provided, which solves the problems existing in the prior art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a wear-resistant bushing, comprising an inner core, one end of which is fitted with a shell, a main oil cavity is provided between the inner wall of the shell and the outer wall of the inner core, and the other end of the inner core is fitted with a locking block that is detachably connected to the shell;

[0007] The locking block has an internal auxiliary oil chamber, and the bottom surface of the locking block has several seepage grooves. The locking block is also equipped with a sealing assembly for sealing the seepage grooves.

[0008] Preferably, the sealing assembly includes a plug retractable into the seepage groove and a pressure plate that is elastically raised and lowered above the locking block. A pressure rod is erected in the auxiliary oil chamber, one end of which is fixed to the plug, and the other end of which extends out of the locking block and is fixed to the pressure plate.

[0009] Preferably, a spring is fitted onto the rod outside the locking block of the pressure rod.

[0010] Preferably, the top of the locking block is provided with an oil injection nozzle that communicates with its inner cavity, and the oil injection nozzle has a built-in one-way valve.

[0011] Compared with the prior art, the advantages of this utility model are as follows: By setting up the auxiliary oil chamber, sealing components, and external oil injection gun, and pressing down the pressure plate, the pressure plate moves the pressure rod downward, causing the plug to exit from the seepage groove. At this time, the external oil injection gun injects lubricating oil into the auxiliary oil chamber, and the lubricating oil can simultaneously flow into the main oil chamber through the seepage groove, realizing synchronous oil storage in the main oil chamber and the auxiliary oil chamber. The oil replenishment operation can be completed without disassembly, greatly simplifying the maintenance process and avoiding the risk of impurities entering during traditional disassembly and oil replenishment. After the oil is injected to the preset amount, the pressure plate is released, the spring elastically returns to its original position, and the pressure rod moves upward, causing the plug to re-seal the seepage groove, ensuring the sealing performance of the dual oil chambers and preventing lubricating oil leakage.

[0012] During the daily operation of the bushing, the lubricating oil in the main oil chamber continuously supplies oil to the sponge through the through hole. When the amount of oil in the main oil chamber decreases, the auxiliary oil chamber can slowly replenish the lubricating oil to the main oil chamber by means of internal oil pressure or gravity, under the micro-leakage design of the seepage groove, forming a dynamic oil replenishment cycle. This ensures that the sponge is always in a wetted state, continuously providing lubrication to the contact surface between the bushing and the workpiece, significantly extending the wear resistance cycle of the bushing and improving the continuity and stability of equipment operation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0015] Figure 3 This utility model Figure 2 Schematic diagram of the structure at point A in the middle.

[0016] The numbers on the map are:

[0017] 1. Inner core; 2. Outer shell; 3. Sponge body; 4. Main oil chamber; 5. Through hole; 6. Locking block; 7. Annular boss; 8. Secondary oil chamber; 9. Oil nozzle; 10. Plug; 11. Pressure rod; 12. Pressure plate; 13. Spring. Detailed Implementation

[0018] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0019] Reference Figure 1-3As shown, a wear-resistant bushing includes an inner core 1, an annular groove on the inner wall of the inner core 1, and a sponge 3 embedded in the annular groove. The outer wall of the inner core 1 is provided with several through holes 5 that communicate with the inside of the annular groove. One end of the inner core 1 is fitted with a shell 2. A main oil chamber 4 for storing lubricating oil is provided between the inner wall of the shell 2 and the outer wall of the inner core 1.

[0020] With the sponge body 3, main oil cavity 4 and through hole 5, the lubricating oil stored in the main oil cavity 4 can continuously penetrate into the sponge body 3 in the annular groove through the through hole 5. After the sponge body 3 absorbs the lubricating oil, it can continuously adhere the lubricating oil to the outer wall of the workpiece during the use of the inner core 1, effectively improving the lubrication effect between the inner core 1 and the workpiece, greatly reducing the friction loss during the relative movement of the two, thereby enhancing the wear resistance of the inner core 1 and extending its service life.

[0021] Furthermore, referring to Figure 3 As shown, it is worth noting that the other end of the inner core 1 is fitted with a locking block 6 that is detachably connected to the outer shell 2;

[0022] The bottom end of the locking block 6 is fixed with an annular boss 7 that is threadedly connected to the inner wall of the outer casing 2;

[0023] By setting the locking block 6 and the annular boss 7, when assembling the bushing, the locking block 6 is fitted onto the other end of the inner core 1. The annular boss 7 is connected to the inner wall of the outer shell 2 by thread, which can quickly achieve the detachable fixing of the locking block 6 and the outer shell 2. This can securely seal the main oil chamber 4, prevent lubricating oil leakage, and ensure the stable oil storage and supply functions of the oil chamber.

[0024] Furthermore, referring to Figure 3 As shown, it is worth noting that the locking block 6 has an auxiliary oil chamber 8 inside, and the bottom surface of the locking block 6 has several seepage grooves. The locking block 6 is also equipped with a sealing component for sealing the seepage grooves.

[0025] The sealing assembly includes a plug 10 that can be retracted into the seepage groove and a pressure plate 12 that can be elastically raised and lowered above the locking block 6. A pressure rod 11 is erected in the auxiliary oil chamber 8. One end of the pressure rod 11 is fixed to the plug 10, and the other end of the pressure rod 11 passes through the locking block 6 and is fixed to the pressure plate 12.

[0026] A spring 13 is fitted onto the rod body of the pressure rod 11 located outside the locking block 6;

[0027] The top of the locking block 6 is provided with an oil injection nozzle 9 that communicates with its inner cavity, and the oil injection nozzle 9 has a built-in check valve;

[0028] By using the auxiliary oil chamber 8, sealing components, and 014, an external oil injection gun is connected to 014, and the pressure plate 12 is pressed down. The pressure plate 12, under force, moves the pressure rod 11 downward, causing the plug 10 to exit from the seepage groove. At this time, the external oil injection gun injects lubricating oil into the auxiliary oil chamber 8 through 014. The lubricating oil can simultaneously flow into the main oil chamber 4 through the seepage groove, achieving synchronous oil storage in the main oil chamber 4 and the auxiliary oil chamber 8. The oil replenishment operation can be completed without disassembly, greatly simplifying the maintenance process and avoiding the risk of impurities entering during traditional disassembly and oil replenishment. After the oil is injected to the preset amount, the pressure plate 12 is released, the spring 13 elastically resets, and the pressure rod 11 moves upward, causing the plug 10 to re-seal the seepage groove, ensuring the sealing performance of the dual oil chambers and preventing lubricating oil leakage.

[0029] During the daily operation of the bushing, the lubricating oil in the main oil chamber 4 continuously supplies oil to the sponge 3 through the through hole 5. When the amount of oil in the main oil chamber 4 decreases, the auxiliary oil chamber 8 can slowly replenish the lubricating oil to the main oil chamber 4 by means of internal oil pressure or gravity, under the micro-leakage design of the seepage groove, forming a dynamic oil replenishment cycle, ensuring that the sponge 3 is always in a wetted state, continuously providing lubrication to the contact surface between the bushing and the workpiece, significantly extending the wear resistance cycle of the bushing, and improving the continuity and stability of equipment operation.

[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 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. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant bushing, comprising an inner core (1), one end of which is fitted with a shell (2), and a main oil cavity (4) is provided between the inner wall of the shell (2) and the outer wall of the inner core (1), characterized in that, The other end of the inner core (1) is fitted with a locking block (6) that is detachably connected to the outer shell (2). The locking block (6) has an internal auxiliary oil chamber (8), and the bottom surface of the locking block (6) has several seepage grooves. The locking block (6) is also provided with a sealing component for sealing the seepage grooves.

2. The wear-resistant bushing according to claim 1, characterized in that, The sealing assembly includes a plug (10) that can be retracted into the seepage groove and a pressure plate (12) that can be elastically raised and lowered above the locking block (6). A pressure rod (11) is erected in the auxiliary oil chamber (8). One end of the pressure rod (11) is fixed to the plug (10), and the other end of the pressure rod (11) extends out of the locking block (6) and is fixed to the pressure plate (12).

3. The wear-resistant bushing according to claim 2, characterized in that, The pressure rod (11) is fitted with a spring (13) on its rod body outside the locking block (6).

4. The wear-resistant bushing according to claim 3, characterized in that, The top of the locking block (6) is provided with an oil injection nozzle (9) that communicates with its inner cavity, and the oil injection nozzle (9) has a built-in one-way valve.

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