High-strength self-lubricating shaft sleeve for automobile chassis

Abstract

The utility model provides a high-strength self-lubricating shaft sleeve for an automobile chassis, which comprises a shaft sleeve body, and further comprises a point lubricating unit, an inclined strip lubricating unit and a flow guide unit which are arranged in the shaft sleeve body. The oil storage channels greatly increase the storage amount of lubricating agents, reduce the adding frequency of lubricating oil and prolong the service life of the shaft sleeve, the point lubricating units are connected through the flow guide units, after the lubricating agents are added, the lubricating agents can be evenly distributed into the point lubricating units and the inclined strip lubricating units through the flow guide units, and therefore the lubricating effect is improved. According to the shaft sleeve, the situation that the lubricant is distributed unevenly is effectively avoided, the contact face of the shaft sleeve and the rotating shaft is strengthened by arranging the strengthening layer, the strength of the shaft sleeve is improved, and the service life of the shaft sleeve is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of lubricating shaft sleeves, in particular to a high-strength self-lubricating shaft sleeve for an automobile chassis. Background Art

[0002] The bushing is an important component in modern mechanical equipment. Its main function is to support the mechanical rotating body and reduce the friction coefficient during its movement. However, when installing the bushing now, the bushing is filled with oil after the bushing and the shaft are installed. It is difficult to make the lubricating oil cover evenly, which will cause excessive friction in the part without lubricating oil, affecting the service life of the shaft.

[0003] Patent document CN219809285U discloses a powder metallurgy sintered sleeve inlaid with solid lubricant, comprising a powder metallurgy sintered inner sleeve and a powder metallurgy sintered outer sleeve nested on the outside of the powder metallurgy sintered inner sleeve, the powder metallurgy sintered inner sleeve and the powder metallurgy sintered outer sleeve having an interference fit; the powder metallurgy sintered inner sleeve and the powder metallurgy sintered outer sleeve are made of the same material, thereby avoiding the situation in which the inner sleeve is damaged or the inner sleeve is loosened due to internal stress caused by different expansion rates due to temperature increase, thereby avoiding the situation in which the inner sleeve rotates or falls off due to loosening of the inner sleeve; the powder metallurgy sintered inner sleeve has a plurality of through holes along its thickness direction, the through holes are tapered holes with small outside and large inside, solid lubricants are inlaid in the through holes, the solid lubricants are squeezed due to thermal expansion during operation, and the tapered hole design with small outside and large inside allows the solid lubricants to be squeezed inward, so that the solid lubricants are continuously supplied, the self-lubricating properties of the material are enhanced, and the bearing capacity of the sleeve is improved because the material is not easily damaged due to bite when bearing.

[0004] However, the lubricant in the sleeve is unevenly distributed and the storage dosage is small, which increases the friction between the shaft and the sleeve and reduces the service life of the sleeve and the shaft. Therefore, it is necessary to improve such a structure to overcome the above-mentioned defects. Utility Model Content

[0005] The utility model aims to provide a high-strength self-lubricating bushing for automobile chassis to solve the problems raised in the above-mentioned background technology.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A high-strength self-lubricating bushing for automobile chassis, comprising a bushing body, and also comprising a point lubrication unit, a slant strip lubrication unit and a guide unit arranged in the bushing body;

[0008] The point lubrication unit includes an inner oil storage hole, an outer oil storage hole and an oil storage channel. The inner oil storage hole is provided with several groups. The inner oil storage holes are evenly arranged inside the sleeve body along the circumferential direction. The inner oil storage holes are recessed radially toward the outer side of the sleeve body to form a semicircular hole. The sleeve body is lubricated by the inner oil storage holes. The outer oil storage holes are provided with several groups. The outer oil storage holes are evenly arranged at the end of the sleeve body along the circumferential direction. The outer oil storage holes are recessed radially toward the outer side of the sleeve body to form a quarter circle. The oil storage channel is formed in the inner oil storage holes. The oil storage channel extends radially toward the outer side of the sleeve body to form a cylindrical groove. The lubricating oil is stored by the oil storage channel.

[0009] The utility model is further configured such that the oblique strip lubrication unit includes an oblique lubrication groove, a pair of which are symmetrically formed in the sleeve body, the oblique lubrication grooves are radially recessed toward the outside of the sleeve body, and extend 120 degrees circumferentially to the inner surface of the sleeve body, so that the sleeve body is lubricated by the oblique lubrication grooves.

[0010] The utility model is further configured that the guide unit includes a guide oil groove, and the guide oil grooves are provided with a plurality of guide oil grooves. The guide oil grooves are respectively formed on the inner surface of the sleeve body, and the two ends of the guide oil grooves are respectively connected to the inner oil storage holes, and the lubricating oil in the inner oil storage hole is transmitted by the guide oil grooves.

[0011] The utility model is further configured such that the number of the outer oil storage holes arranged in the circumferential direction is one quarter of the number of the inner oil storage holes.

[0012] The utility model is further configured that the end of the shaft sleeve body is provided with a chamfer.

[0013] The utility model is further configured that the shaft sleeve body is made of metal material.

[0014] The utility model is further configured that a strengthening layer is provided on the inner surface of the shaft sleeve body.

[0015] The advantages of the utility model are:

[0016] 1. The utility model stores lubricating oil by setting a point lubrication unit and a bevel lubrication unit. The oil storage channel greatly increases the storage capacity of the lubricant, reduces the number of times the lubricating oil is added, and increases the service life of the sleeve.

[0017] 2. The utility model connects the point lubrication units by setting a guide unit. After the lubricant is added, the lubricant will be evenly distributed to the point lubrication unit and the oblique strip lubrication unit through the guide unit, effectively avoiding the uneven distribution of the lubricant.

[0018] 3. The utility model strengthens the contact surface between the shaft sleeve and the rotating shaft by providing a strengthening layer, thereby increasing the strength of the shaft sleeve and increasing the service life of the shaft sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a three-dimensional diagram of a high-strength self-lubricating bushing for an automobile chassis.

[0020] Figure 2 The utility model is a cross-sectional view of a high-strength self-lubricating shaft sleeve for an automobile chassis.

[0021] Numeral symbols: sleeve body 100, inner oil storage hole 110, outer oil storage hole 120, oil storage channel 130, oblique lubrication groove 210, guide oil groove 310 DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0023] like Figure 1-2 As shown, the utility model provides a high-strength self-lubricating bushing for automobile chassis, comprising a bushing body 100, and also comprising a point lubrication unit, a diagonal strip lubrication unit and a guide unit arranged in the bushing body;

[0024] The point lubrication unit includes an inner oil storage hole 110, an outer oil storage hole 120 and an oil storage channel 130. The inner oil storage holes are provided with several groups. The inner oil storage holes are evenly arranged inside the sleeve body along the circumferential direction. The inner oil storage holes are recessed radially toward the outer side of the sleeve body to form a semicircular hole. The sleeve body is lubricated by the inner oil storage holes. The outer oil storage holes are provided with several groups. The outer oil storage holes are evenly arranged at the end of the sleeve body along the circumferential direction. The outer oil storage holes are recessed radially toward the outer side of the sleeve body to form a quarter circle. The oil storage channel is formed in the inner oil storage holes. The oil storage channel extends radially toward the outer side of the sleeve body to form a cylindrical groove. The lubricating oil is stored by the oil storage channel.

[0025] In this embodiment, the oblique strip lubrication unit includes an oblique lubrication groove 210, which is provided with a pair of oblique lubrication grooves. The oblique lubrication grooves are symmetrically formed in the sleeve body, and the oblique lubrication grooves are radially recessed toward the outside of the sleeve body, and extend 120 degrees circumferentially on the inner surface of the sleeve body. The sleeve body is lubricated by the oblique lubrication grooves.

[0026] In this embodiment, the guide unit includes a guide oil groove 310, which is provided with a plurality of guide oil grooves. The guide oil grooves are respectively formed on the inner surface of the sleeve body. The two ends of the guide oil grooves are respectively connected to the internal oil storage holes, and the lubricating oil in the internal oil storage hole is transmitted by the guide oil grooves.

[0027] In this embodiment, the number of the outer oil storage holes arranged in the circumferential direction is one quarter of the number of the inner oil storage holes.

[0028] In this embodiment, the end of the sleeve body is provided with a chamfer.

[0029] In this embodiment, the shaft sleeve body is made of metal material, and the shaft sleeve body is made of stainless steel. The stainless steel has high strength and wear resistance, thereby increasing the service life of the shaft sleeve.

[0030] In this embodiment, a strengthening layer is provided on the inner surface of the sleeve body. The strengthening layer is nickel-plated. The nickel-plated layer has the advantages of high strength, high hardness and wear resistance. It can effectively resist scratches from the rotating shaft, reduce wear on the sleeve, and increase the service life of the sleeve.

[0031] In the description of the present utility model, it should be noted that when terms such as "upper", "lower", "inner", "outer", "left", "right" and the like indicating orientation or positional relationship appear, it should be understood that the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the equipment or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, when terms such as "first" and "second" appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and limited, terms such as "installation", "setting", and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

Claims

1. A high-strength self-lubricating bushing for automobile chassis, comprising a bushing body, characterized in that: It also includes a point lubrication unit, a slant strip lubrication unit and a flow guide unit arranged in the sleeve body; The point lubrication unit includes an inner oil storage hole, an outer oil storage hole and an oil storage channel. The inner oil storage hole is provided with several groups. The inner oil storage holes are evenly arranged inside the sleeve body along the circumferential direction. The inner oil storage holes are recessed radially toward the outer side of the sleeve body to form a semicircular hole. The sleeve body is lubricated by the inner oil storage holes. The outer oil storage holes are provided with several groups. The outer oil storage holes are evenly arranged at the end of the sleeve body along the circumferential direction. The outer oil storage holes are recessed radially toward the outer side of the sleeve body to form a quarter circle. The oil storage channel is formed in the inner oil storage holes. The oil storage channel extends radially toward the outer side of the sleeve body to form a cylindrical groove. The lubricating oil is stored by the oil storage channel.

2. A high-strength self-lubricating bushing for automobile chassis according to claim 1, characterized in that: The oblique lubrication unit includes an oblique lubrication groove, which is provided with a pair. The oblique lubrication grooves are symmetrically formed in the sleeve body. The oblique lubrication is recessed radially toward the outside of the sleeve body and extends 120 degrees circumferentially on the inner surface of the sleeve body. The sleeve body is lubricated by the oblique lubrication grooves.

3. The high-strength self-lubricating bushing for automobile chassis according to claim 1, characterized in that: The guide unit includes a guide oil groove, which is provided with a plurality of guide oil grooves, each of which is formed on the inner surface of the sleeve body. Both ends of the guide oil groove are respectively connected to the inner oil storage hole, and the guide oil groove transmits the lubricating oil in the inner oil storage hole.

4. The high-strength self-lubricating bushing for automobile chassis according to claim 1, characterized in that: The number of the outer oil storage holes arranged in the circumferential direction is one quarter of the number of the inner oil storage holes.

5. The high-strength self-lubricating bushing for automobile chassis according to claim 1, characterized in that: The end of the sleeve body is provided with a chamfer.

6. The high-strength self-lubricating bushing for automobile chassis according to claim 1, characterized in that: The shaft sleeve body is made of metal material.

7. The high-strength self-lubricating bushing for automobile chassis according to claim 1, characterized in that: The inner surface of the sleeve body is provided with a strengthening layer.

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