Reciprocating lever lubricating shaft sleeve

Abstract

The utility model relates to a reciprocating lever lubricating shaft sleeve, and relates to the technical field of shaft sleeves, the reciprocating lever lubricating shaft sleeve comprises an inner sleeve and an outer protection structure, the inner sleeve is a powder metallurgy oil-containing part, a mounting area is arranged in the outer protection structure, and the inner sleeve is detachably mounted in the mounting area; the outer protection structure is provided with a through hole for communicating the mounting area with the outer part of the outer protection structure, and the through hole is coaxial with the inner wall of the inner sleeve; the hole diameter of the through hole is larger than the diameter of the inner wall of the inner sleeve, at least two oil storage grooves are formed in the inner wall of the inner sleeve in the axis direction, and the oil storage grooves are evenly distributed in the circumferential direction of the inner wall of the inner sleeve at intervals. The reciprocating lever has the effects of reducing friction force between the shaft sleeve and the reciprocating lever and reducing abrasion between the shaft sleeve and the reciprocating lever.

Description

Technical Field

[0001] This application relates to the field of bushing technology, and in particular to a reciprocating rod lubrication bushing. Background Technology

[0002] Currently, in the mechanical field, reciprocating rod structures that slide along a straight line are commonly used. When applying a reciprocating rod structure, a sliding bushing is required at a specific position to guide the sliding direction of the reciprocating rod, forcing the reciprocating rod to slide within the bushing during movement, thereby improving the stability of the reciprocating rod's sliding.

[0003] Although common bushings help guide the reciprocating rod, wear on both the bushing and the reciprocating rod is inevitable after prolonged use. Once the reciprocating rod is worn, maintenance costs are high and sliding resistance increases significantly. Therefore, it is necessary to reduce the friction between the bushing and the reciprocating rod. Utility Model Content

[0004] In order to reduce the friction between the bushing and the reciprocating rod and reduce the wear of the bushing and the reciprocating rod, this application provides a reciprocating rod lubrication bushing.

[0005] The technical solution for a reciprocating rod lubrication bushing provided in this application is as follows:

[0006] A reciprocating rod lubrication bushing includes an inner sleeve and an outer protective structure. The inner sleeve is a powder metallurgy oil-impregnated part. The outer protective structure has an installation area, and the inner sleeve is detachably installed in the installation area. The outer protective structure has a through hole connecting the installation area and the outside of the outer protective structure. The through hole is coaxial with the inner wall of the inner sleeve. The diameter of the through hole is larger than the diameter of the inner wall of the inner sleeve. At least two oil storage grooves are formed along the axial direction on the inner wall of the inner sleeve. All the oil storage grooves are evenly and spaced apart in the circumferential direction of the inner wall of the inner sleeve.

[0007] By adopting the above technical solution, the inner sleeve made of powder metallurgy oil-impregnated material has good self-lubricating properties, which helps to extend the service life of the bushing and reciprocating rod, and the powder metallurgy oil-impregnated bushing has low cost. The outer protective structure not only plays a role in installing and supporting the inner sleeve, but also protects the inner sleeve from damage by external forces. The detachable connection between the inner sleeve and the outer protective structure facilitates the individual replacement of the inner sleeve. The through hole allows the reciprocating rod to extend into the inner sleeve located in the outer protective structure. The oil storage groove opened along the inner wall of the inner sleeve plays a role in storing oil, allowing lubricating oil to enter between the inner wall of the inner sleeve and the reciprocating rod when the inner sleeve and the reciprocating rod move relative to each other. Moreover, multiple oil storage grooves are evenly and spaced along the circumference of the inner wall of the inner sleeve, ensuring that the inner sleeve can effectively lubricate the reciprocating rod in all directions, further reducing the friction between the inner sleeve and the reciprocating rod. The oil storage grooves and the powder metallurgy oil-impregnated inner sleeve together form a continuous lubrication mechanism, reducing the wear of the bushing and the reciprocating rod, and extending the service life of the bushing and the reciprocating rod.

[0008] Preferably, the end of the inner sleeve extends into the through hole, and the outer wall of the end of the inner sleeve fits and abuts against the inner wall of the through hole.

[0009] By adopting the above technical solution, the end of the inner sleeve extends into the through hole and the outer wall of the inner sleeve fits against the inner wall of the through hole, which enhances the connection stability between the inner sleeve and the outer protective structure, improves the coaxiality between the through hole and the inner wall of the inner sleeve, and ensures that the orientation of the inner wall of the inner sleeve will not shift. In addition, the end of the inner sleeve extends into the through hole, which is closer to the outside of the inner sleeve, making it easier to add lubricating oil from the end of the inner sleeve into the oil storage groove.

[0010] Preferably, a constraint ring is integrally formed on the outer peripheral wall of the inner sleeve, the constraint ring is located in the installation area, and the inner wall of the installation area and the constraint ring are adapted to each other and abut against each other.

[0011] By adopting the above technical solution, the constraint ring integrally formed on the outer wall of the inner sleeve is located in the installation area, and the inner wall of the installation area and the constraint ring are mutually adapted and abut against each other, which further enhances the stability of the inner sleeve in the installation area; the constraint ring can restrict the axial movement of the inner sleeve in the installation area, and prevent the inner sleeve from being displaced or shaking in the installation area when the reciprocating rod moves.

[0012] Preferably, the constraint ring has a set of spherical surfaces symmetrically arranged at both ends in the axial direction.

[0013] By adopting the above technical solution, the spherical surfaces symmetrically opened at both ends of the constraint ring along the axial direction can reduce the alignment difficulty during the installation of the inner sleeve. During the installation process, the arc structure of the spherical surface has a guiding function, guiding the constraint ring into the installation area of ​​the outer protective structure, reducing the installation obstacles caused by the small dimensional tolerance between the inner sleeve and the installation area, and improving assembly efficiency. When the bushing is working, the spherical surface increases the bearing area of ​​the installation area for axial force transmission to the inner sleeve and helps to disperse the axial stress of the inner sleeve.

[0014] Preferably, the outer protective structure includes a sleeve, a cover, and a connector. The cover and the sleeve are detachably connected by the connector. The sleeve has a first half-groove, and the cover has a second half-groove. The first half-groove and the second half-groove are symmetrical to each other. The installation area is composed of the first half-groove and the second half-groove.

[0015] By adopting the above technical solution, the outer protective structure uses a sleeve base and a sleeve cover that are detachably connected by connectors, which facilitates the installation and maintenance of the inner sleeve. When installing the inner sleeve, simply place the inner sleeve in the first half-groove of the sleeve base, and then connect the sleeve cover to the sleeve base through the connectors. The first half-groove and the second half-groove together form the installation area, which completes the installation. The operation is simpler and faster, and the installation difficulty is reduced.

[0016] Preferably, the connector includes a pin, a rotating block, and a pressing block. The two sides of the sleeve are integrally formed with mating portions, and the lower surface of the mating portion abuts against the upper surface of the sleeve. A connecting hole is provided on the mating portion, penetrating the upper and lower surfaces of the mating portion. The pin is perpendicular to and fixedly connected to the upper surface of the sleeve. The rotating block is rotatably connected to the top of the pin. A set of pressing blocks is symmetrically and integrally formed on the side wall of the rotating block. The rotating block and the pressing block can pass through the connecting hole, and the pressing block abuts against the upper surface of the mating portion.

[0017] By adopting the above technical solution, when installing the sleeve cover, the rotating block and the pressure block are aligned with the connection hole and passed through. Then, the rotating block is rotated so that the pressure block rotates to the upper surface of the mating part. At this time, the pressure block abuts against the upper surface of the mating part, thereby connecting the sleeve cover and the sleeve seat together. The operation is simple and requires no additional tools. The connection and disassembly of the sleeve cover and the sleeve seat can be achieved simply by rotating the rotating block, which facilitates the installation and maintenance of the inner sleeve.

[0018] Preferably, the connector further includes a ball bearing, and the pressure block has a ball groove that extends through the lower surface of the pressure block. The ball bearing is embedded in and rolls in the ball groove, and the bottom of the ball bearing extends out of the ball groove and abuts against the upper surface of the mating part.

[0019] By adopting the above technical solution, when the rotating block is rotated, the balls roll on the upper surface of the mating part, changing the original sliding friction into rolling friction, reducing the friction force when the rotating block rotates, and making the rotation operation easier and smoother.

[0020] Preferably, the connecting hole includes a pin hole for the pin rod and the rotating block to pass through, and a through hole for the pressure block to pass through, wherein the pin hole and the pin rod are adapted to each other and abut against each other.

[0021] By adopting the above technical solution, the pin hole and the pin rod are matched and abutted against each other, which can ensure the positioning accuracy of the pin rod in the pin hole and prevent the pin rod from shaking in the pin hole, thereby improving the stability of the connection between the sleeve cover and the sleeve seat.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. By setting up an inner sleeve, an outer protective structure, an installation area, a through hole, and an oil storage groove, the powder metallurgy oil-impregnated inner sleeve has good self-lubricating properties. The outer protective structure plays the role of installation, support, and protection for the inner sleeve, and protects the inner sleeve. The oil storage groove stores lubricating oil, reduces the friction between the bushing and the reciprocating rod, and reduces the wear of the inner wall of the bushing and the reciprocating rod.

[0024] 2. By setting constraint rings and spherical surfaces, the constraint rings enhance the stability of the inner sleeve and restrict its axial movement. The spherical surfaces at both ends of the constraint rings play a guiding role during installation, reducing the difficulty of alignment and improving assembly efficiency. During operation, the spherical surfaces increase the bearing area, disperse axial stress, and ensure the stable operation of the bushing.

[0025] 3. By setting up a sleeve base, sleeve cover, connector, first half groove, second half groove, pin, rotating block, mating part, and connecting hole, the installation area can be opened quickly, thereby improving the installation and maintenance efficiency of the inner sleeve. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a reciprocating rod lubrication bushing provided in the embodiments of this application.

[0027] Figure 2 yes Figure 1 Enlarged view of section A.

[0028] Figure 3 This is an exploded view of a reciprocating rod lubrication bushing provided in an embodiment of this application.

[0029] Figure 4 This is a partial cross-sectional view of a reciprocating rod lubrication bushing provided in an embodiment of this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Inner sleeve; 11. Oil reservoir; 12. Constraint ring; 121. Spherical surface; 2. Outer protective structure; 21. Installation area; 211. First half-groove; 212. Second half-groove; 22. Through hole; 23. Sleeve seat; 24. Sleeve cover; 241. Butt joint; 242. Connecting hole; 2421. Pin hole; 2422. Through hole; 25. Connecting piece; 251. Pin rod; 252. Rotating block; 2521. Pressure block; 2522. Ball groove; 253. Ball. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0032] This application discloses a reciprocating rod lubrication bushing. (Refer to...) Figures 1 to 3 The bushing comprises an inner sleeve 1 and an outer protective structure 2. The inner wall of the inner sleeve 1 provides a working surface for direct contact between the bushing and the reciprocating rod. The inner sleeve 1 is a powder metallurgy oil-impregnated component, possessing excellent self-lubricating properties, which helps extend the service life of the bushing and the reciprocating rod. The outer protective structure 2 has an installation area 21 within which the inner sleeve 1 can be detachably installed. The outer protective structure 2 provides a stable installation environment and protection for the inner sleeve 1. At least two oil storage grooves 11 are formed along the axial direction on the inner wall of the inner sleeve 1; in this embodiment, four oil storage grooves 11 are formed. All oil storage grooves 11 are evenly and spaced apart in the circumferential direction of the inner wall of the inner sleeve 1. The oil storage grooves 11 serve to store oil, allowing lubricating oil to enter between the inner wall of the inner sleeve 1 and the reciprocating rod during relative movement. This further reduces the friction between the inner sleeve 1 and the reciprocating rod, reducing wear on the bushing and the reciprocating rod.

[0033] Reference Figure 1 The outer protective structure 2 has a through hole 22 that connects the installation area 21 to the outside of the outer protective structure 2. The through hole 22 is coaxial with the inner wall of the inner sleeve 1. The diameter of the through hole 22 is larger than the diameter of the inner wall of the inner sleeve 1. Specifically, the end of the inner sleeve 1 extends into the through hole 22, and the outer wall of the end of the inner sleeve 1 fits and abuts against the inner wall of the through hole 22, improving the coaxiality between the through hole 22 and the inner wall of the inner sleeve 1 and ensuring that the orientation of the inner wall of the inner sleeve 1 will not shift.

[0034] Reference Figures 1 to 3The outer protective structure 2 includes a sleeve 23, a cover 24, and a connector 25. The cover 24 is made of aluminum, and the sleeve 23, located on the application equipment of the bushing, can also be made of aluminum. A first half-groove 211 is formed on the sleeve 23, and a second half-groove 212 is formed on the cover 24. The first half-groove 211 and the second half-groove 212 on the cover 24 are symmetrical. The first half-groove 211 on the sleeve 23 and the second half-groove 212 on the cover 24 cooperate to form the installation area 21. When installing the inner sleeve 1, the inner sleeve 1 is first placed in the first half-groove 211 of the sleeve 23, and then the cover 24 is connected to the sleeve 23 via the connector 25. In addition, the through hole 22 is also composed of two half-holes formed on the cover 24 and the sleeve 23 respectively.

[0035] Reference Figure 2 and Figure 4 The connector 25 includes a pin 251, a rotating block 252, a pressure block 2521, and a ball bearing 253. The cover 24 has integrally formed mating portions 241 on both sides, with the lower surface of the mating portion 241 abutting against the upper surface of the sleeve 23. The pin 251 is perpendicularly and fixedly connected to the upper surface of the sleeve 23, the rotating block 252 is rotatably connected to the top of the pin 251, and a set of pressure blocks 2521 are symmetrically and integrally formed on the side wall of the rotating block 252. A connecting hole 242 is provided on the mating portion 241, penetrating the upper and lower surfaces of the mating portion 241. The rotating block 252 and the pressure block 2521 can pass through the connecting hole 242. Specifically, the connecting hole 242 includes a pin hole 2421 for the pin 251 and the rotating block 252 to pass through, and a through hole 2422 for the pressure block 2521 to pass through. The pin hole 2421 and the pin 251 are mutually adapted and abut against each other. The pressure block 2521 abuts against the upper surface of the mating part 241. Specifically, the pressure block 2521 has a bead groove 2522 that penetrates the lower surface of the pressure block 2521. The ball 253 is embedded in and rolls in the bead groove 2522. The bottom of the ball 253 extends out of the bead groove 2522 and abuts against the upper surface of the mating part 241.

[0036] Reference Figures 1 to 4 Align the pin hole 2421 on the mating part 241 of the sleeve cover 24 with the pin 251 and the rotating block 252, align the through hole 2422 with the pressure block 2521, and then insert the sleeve cover 24. The rotating block 252 and the pressure block 2521 pass through the connecting hole 242. Then rotate the rotating block 252 so that the pressure block 2521 abuts against the upper surface of the mating part 241, completing the connection between the sleeve cover 24 and the sleeve base 23. Installation and disassembly are quick and require no additional tools, improving the installation efficiency of the inner sleeve 1.

[0037] Reference Figures 1 to 3A constraint ring 12 is integrally formed on the outer peripheral wall of the inner sleeve 1. The constraint ring 12 is located within the installation area 21, and the inner wall of the installation area 21 is adapted to and abuts against the constraint ring 12. The constraint ring 12 restricts the axial movement of the inner sleeve 1 within the installation area 21, preventing the inner sleeve 1 from shifting or wobbling within the installation area 21 during the movement of the reciprocating rod. A set of spherical surfaces 121 are symmetrically provided at both ends of the constraint ring 12 in the axial direction. During installation, the arc-shaped structure of the spherical surfaces 121 has a guiding function, guiding the constraint ring 12 into the installation area 21 of the outer protective structure 2, that is, the spherical surfaces 121 guide the inner sleeve 1 to be aligned in the first semi-groove 211. When the bushing is working, the spherical surfaces 121 increase the bearing area of ​​the installation area 21 for axial force transmission to the inner sleeve 1 and help to disperse the axial stress of the inner sleeve 1.

[0038] The implementation principle of the reciprocating rod lubrication bushing according to an embodiment of this application is as follows: When the reciprocating rod is inserted into the inner sleeve 1 for reciprocating motion, the inner sleeve 1, being a powder metallurgy oil-impregnated part, possesses excellent self-lubricating properties. Simultaneously, the oil storage grooves 11 evenly spaced along the axial direction on the inner wall of the inner sleeve 1 contain lubricating oil. When the reciprocating rod and the inner sleeve 1 move relative to each other, the lubricating oil enters between the inner wall of the inner sleeve 1 and the reciprocating rod, further reducing the friction between them and decreasing wear on the inner sleeve 1 and the reciprocating rod, thereby extending the service life of the bushing and the reciprocating rod. Meanwhile, the outer protective structure 2 provides protection for the inner sleeve 1, preventing damage. Furthermore, the inner sleeve 1 and the outer protective structure 2 are detachably connected, facilitating individual replacement of the inner sleeve 1 and ensuring the lubrication of the bushing. Thus, the oil storage grooves 11 and the powder metallurgy oil-impregnated inner sleeve 1 together form a continuous lubrication mechanism, reducing the friction between the bushing and the reciprocating rod and decreasing wear on both.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A reciprocating rod lubricating bushing characterized by: The application relates to a powder metallurgy oil-containing part, which comprises an inner sleeve (1) and an outer protective structure (2), the inner sleeve (1) is a powder metallurgy oil-containing part, the outer protective structure (2) is internally provided with a mounting area (21), the inner sleeve (1) is detachably mounted in the mounting area (21), a through hole (22) is formed in the outer protective structure (2) and communicates the mounting area (21) with the outside of the outer protective structure (2), the through hole (22) is coaxial with the inner wall of the inner sleeve (1), the diameter of the through hole (22) is larger than the diameter of the inner wall of the inner sleeve (1), at least two oil storage grooves (11) are formed in the inner wall of the inner sleeve (1) along the axial direction, and all the oil storage grooves (11) are uniformly and spacedly distributed in the circumferential direction of the inner wall of the inner sleeve (1).

2. A reciprocating rod lubricating bushing as set forth in claim 1 wherein: The end of the inner sleeve (1) extends into the through hole (22), the outer wall of the end of the inner sleeve (1) is attached to and abuts against the inner wall of the through hole (22).

3. A reciprocating rod lubricating bushing as set forth in claim 1 wherein: A constraint ring (12) is integrally formed on the outer circumferential wall of the inner sleeve (1), the constraint ring (12) is located in the mounting area (21), and the inner wall of the mounting area (21) and the constraint ring (12) are matched and abutted against each other.

4. A reciprocating rod lubricating bushing as set forth in claim 3 wherein: A group of spherical surfaces (121) are symmetrically arranged at the two ends of the constraint ring (12) along the axial direction.

5. A reciprocating rod lubricating bushing as defined in claim 1, wherein: The outer protective structure (2) comprises a sleeve base (23), a sleeve cover (24) and a connecting piece (25), the sleeve cover (24) and the sleeve base (23) are detachably connected through the connecting piece (25), a first half groove (211) is formed in the sleeve base (23), a second half groove (212) is formed in the sleeve cover (24), the first half groove (211) and the second half groove (212) are symmetrically arranged, and the mounting area (21) is formed by the first half groove (211) and the second half groove (212).

6. A reciprocating rod lubricating bushing as set forth in claim 5 wherein: The connecting piece (25) comprises a pin rod (251), a rotating block (252) and a pressing block (2521), both sides of the sleeve cover (24) are integrally provided with a butt joint part (241), the lower surface of the butt joint part (241) abuts against the upper surface of the sleeve base (23), a connecting hole (242) is formed in the butt joint part (241) and penetrates the upper and lower surfaces of the butt joint part (241), the pin rod (251) is vertically and fixedly connected with the upper surface of the sleeve base (23), the rotating block (252) is rotationally connected with the top of the pin rod (251), a group of the pressing blocks (2521) are symmetrically and integrally formed on the side wall of the rotating block (252), the rotating block (252) and the pressing blocks (2521) can pass through the connecting hole (242), and the pressing blocks (2521) abut against the upper surface of the butt joint part (241).

7. A reciprocating rod lubricating bushing as set forth in claim 6 wherein: The connecting piece (25) further comprises a ball (253), a ball groove (2522) is formed in the pressing block (2521) and penetrates the lower surface of the pressing block (2521), the ball (253) is embedded and rolled in the ball groove (2522), the bottom of the ball (253) extends out of the ball groove (2522) and abuts against the upper surface of the butt joint part (241).

8. A reciprocating rod lubricating bushing as set forth in claim 6 wherein: The connecting hole (242) comprises a pin hole (2421) for the pin rod (251) and the rotating block (252) to pass through, a via hole (2422) for the pressing block (2521) to pass through, and the pin hole (2421) and the pin rod (251) are matched with each other and abutted.

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