A new type of lubricated pin bushing

Abstract

The utility model discloses a novel lubrication pin shaft sleeve, including baffle, the one side of baffle is installed inner tube, the inside of inner tube is equipped with oil groove, the inside of oil groove is equipped with a plurality of oil outlet holes evenly, the outside of inner tube is equipped with outer tube, the mutual connection through screw between outer tube and inner tube, the inside of outer tube is installed convex strip, and the one end of convex strip and outer tube is equipped with the placement groove of placing sealing strip, through the injection lubricating oil between inner tube and outer tube, can flow to the whole surface of pin shaft through oil groove lubricating oil, avoided the emergence of the condition that pin shaft middle part lubricating oil is less, still can store certain lubricating oil between inner tube and outer tube, can play the role of supplement lubrication in the subsequent use process. Moreover, the threaded connection between the inner tube and the outer tube of the device, when the inner tube is severely worn, can be quickly replaced, eliminating the process of knocking out the outer tube, and speeding up the replacement efficiency.

Description

Technical Field

[0001] This utility model relates to the field of pin sleeve technology, specifically a novel lubricated pin sleeve. Background Technology

[0002] A pin sleeve is generally used in conjunction with a pin to reduce wear on the pin.

[0003] In the prior art, when lubricating the pin sleeve, lubricating oil is generally injected into the inside of the pin sleeve. However, a large amount of lubricating oil often flows out from the end of the pin sleeve due to the mutual squeezing between the pin sleeve and the pin shaft, which is wasteful. The lubricating oil remaining in the middle of the sleeve is also relatively small, and it needs to be re-lubricated after a period of use.

[0004] Meanwhile, the inner side of the existing pin bushings wears out due to long-term friction with the pin shaft and needs to be replaced. Since the existing pin bushings are connected to the outer mechanism with an interference fit, workers need to use a hammer to knock the pin bushings out little by little during disassembly, which seriously affects the replacement efficiency.

[0005] Therefore, a new type of lubricating pin bushing is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a novel lubricating pin bushing to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a novel lubricating pin bushing, including a baffle, an inner cylinder installed on one side of the baffle, an oil groove opened on the inner side of the inner cylinder, and a plurality of oil outlet holes evenly opened inside the oil groove; An outer cylinder is provided on the outside of the inner cylinder. The outer cylinder and the inner cylinder are connected to each other by threads. A convex strip is installed on the inner side of the outer cylinder. A groove for placing a sealing strip is opened at one end of the convex strip and the outer cylinder. An oil inlet is opened on the outer cylinder. Lubricating oil is filled between the inner cylinder and the outer cylinder.

[0008] Preferably, the inner cylinder has a protrusion on the side near the baffle, and the protrusion has an external thread.

[0009] Preferably, the inner side of the outer cylinder near the protruding strip is provided with an internal thread, and the internal thread and the external thread are compatible.

[0010] Preferably, multiple staggered support bars are evenly installed on the inner side of the outer cylinder.

[0011] Preferably, the oil grooves are arranged in a spiral shape, and the multiple oil outlet holes are all located inside the spiral oil grooves.

[0012] Preferably, the tightening direction of the internal and external threads is the same as the rotation direction of the pin inside the inner cylinder.

[0013] Preferably, the sealing strips inside the two placement slots are tightly fitted to the ends and outer sides of the inner cylinder, respectively.

[0014] Compared with existing technologies, the advantages of this invention are as follows: By injecting lubricating oil between the inner and outer cylinders, the lubricating oil can flow through the oil groove to the entire surface of the pin, avoiding the situation where there is insufficient lubricating oil in the middle of the pin. At the same time, a certain amount of lubricating oil will remain between the inner and outer cylinders, which can play a role in supplementing lubrication during subsequent use. Moreover, the inner and outer cylinders of this device are connected by threads, which allows for quick replacement when the inner cylinder is severely worn, eliminating the need to knock out the outer cylinder and speeding up the replacement efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the inner cylinder of this utility model; Figure 3 This is a schematic diagram of the outer cylinder of this utility model; Figure 4 This is a cross-sectional structural diagram of the outer cylinder of this utility model.

[0016] In the diagram: 1. Baffle; 2. Inner cylinder; 3. Oil trough; 4. Oil outlet; 5. Outer cylinder; 6. Raised bar; 7. Oil inlet; 8. Support bar; 9. Placement groove; 10. Protrusion; 11. External thread; 12. Internal thread. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0018] Please see Figure 1-4 This utility model provides a technical solution: a novel lubricating pin bushing, including a baffle 1, an inner cylinder 2 installed on one side of the baffle 1, an oil groove 3 opened on the inner side of the inner cylinder 2, and a plurality of oil outlet holes 4 evenly opened inside the oil groove 3. An outer cylinder 5 is provided on the outside of the inner cylinder 2. The outer cylinder 5 and the inner cylinder 2 are connected to each other by threads. A protruding strip 6 is installed on the inner side of the outer cylinder 5. A placement groove 9 for placing a sealing strip is opened at one end of the protruding strip 6 and the outer cylinder 5. An oil inlet hole 7 is opened on the outer cylinder 5. A one-way valve or a cover can be installed on the oil inlet hole 7. A pinhole can be opened on the cover to facilitate the entry of gas. The space between the inner cylinder 2 and the outer cylinder 5 is filled with lubricating oil. The lubricating oil cannot be a paste-like lipid lubricating oil, that is, a grease, because such products have poor fluidity and cannot flow out from the inside of the oil outlet hole 7.

[0019] like Figures 1 to 4 As shown: The inner cylinder 2 has a protrusion 10 on the side near the baffle 1, and an external thread 11 is provided on the protrusion 10. The inner side of the outer cylinder 5 near the protrusion 6 has an internal thread 12. The internal thread 12 and the external thread 11 are compatible. With the above arrangement, the protrusion 10 can make the external thread 11 more convenient to cooperate with the internal thread 12. At the same time, one side of the protrusion 10 is also in contact with one side of the protrusion 6, which can play a simple sealing role.

[0020] like Figure 3 and Figure 4 As shown: Multiple staggered support bars 8 are evenly installed on the inner side of the outer cylinder 5; through the above arrangement, the multiple staggered support bars 8 can support the space between the inner cylinder 2 and the outer cylinder 5, and at the same time, they can also guide the internal lubricant.

[0021] like Figure 1 As shown: the oil groove 3 is distributed in a spiral shape, and multiple oil outlet holes 4 are located inside the spiral oil groove 3; with the above arrangement, after the pin is installed inside, the lubricating oil can flow evenly to the pin surface through the oil outlet holes 4 and the oil groove 3, which facilitates the lubrication effect.

[0022] like Figure 1 As shown: the tightening direction of the internal thread 12 and the external thread 11 is the same as the rotation direction of the internal pin of the inner cylinder 2; with the above settings, the situation that the inner cylinder 2 and the outer cylinder 5 will gradually loosen when the internal pin rotates can be avoided.

[0023] like Figure 1 As shown: the sealing strips inside the two placement slots 9 are tightly fitted to the end and the outside of the inner cylinder 2, respectively; through the above settings, the risk between the inner cylinder 2 and the outer cylinder 5 can be sealed, avoiding the occurrence of lubricating oil leakage.

[0024] Working principle: Before use, the inner cylinder 2 and the outer cylinder 5 are first fixed together by the internal thread 12 and the external thread 11, and the two sides are sealed by the sealing strip inside the placement groove 8. Then, lubricating fluid is injected into the space between the inner cylinder 2 and the outer cylinder 5 through the oil inlet hole 7. The lubricating fluid is discharged into the oil groove 3 through the oil outlet hole 4, and then lubricates the pin surface. At the same time, a certain amount of lubricating fluid is left in the space between the inner cylinder 2 and the outer cylinder 5, which can be replenished into the oil groove 3 in subsequent use to achieve the effect of supplementing lubrication.

[0025] Meanwhile, when the inner cylinder 2 is severely worn, the inner cylinder can be quickly removed by thread, and the replacement work can be completed quickly. This avoids the situation where workers have to use tools to knock off the entire bushing due to interference fit, thus improving the replacement efficiency of the equipment.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel lubricating pin bushing, comprising a baffle (1), characterized in that: An inner cylinder (2) is installed on one side of the baffle (1), and an oil groove (3) is opened on the inner side of the inner cylinder (2). Multiple oil outlet holes (4) are evenly opened inside the oil groove (3). The outer cylinder (5) is provided on the outside of the inner cylinder (2). The outer cylinder (5) and the inner cylinder (2) are connected to each other by threads. A protruding strip (6) is installed on the inner side of the outer cylinder (5). A placement groove (9) for placing a sealing strip is opened at one end of the protruding strip (6) and the outer cylinder (5). An oil inlet hole (7) is opened on the outer cylinder (5). Lubricating oil is filled between the inner cylinder (2) and the outer cylinder (5).

2. The novel lubricating pin sleeve according to claim 1, characterized in that: The inner cylinder (2) has a protrusion (10) on the side near the baffle (1), and the protrusion (10) has an external thread (11).

3. The novel lubricating pin sleeve according to claim 2, characterized in that: The inner side of the outer cylinder (5) near the protrusion (6) is provided with an internal thread (12), and the internal thread (12) and the external thread (11) are compatible.

4. The novel lubricating pin sleeve according to claim 1, characterized in that: The inner side of the outer cylinder (5) is uniformly equipped with multiple staggered support bars (8).

5. A novel lubricating pin sleeve according to claim 1, characterized in that: The oil groove (3) is spirally distributed, and the multiple oil outlet holes (4) are all located inside the spiral oil groove (3).

6. A novel lubricating pin sleeve according to claim 3, characterized in that: The tightening direction of the internal thread (12) and the external thread (11) is the same as the rotation direction of the pin inside the inner cylinder (2).

7. A novel lubricating pin sleeve according to claim 1, characterized in that: The sealing strips inside the two placement slots (9) are tightly fitted to the ends and the outside of the inner cylinder (2), respectively.

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