CN214036356U

CN214036356U - Oil spraying ring for lubricating oil seal of hydraulic cylinder

Info

Publication number: CN214036356U
Application number: CN202023344154.2U
Authority: CN
Inventors: 杨军
Original assignee: Hunan Xiang Li Salt Co ltd
Current assignee: Hunan Xiang Li Salt Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-08-24
Anticipated expiration: 2030-12-31

Abstract

The invention relates to an oil injection ring for lubricating an oil seal of a hydraulic cylinder, which comprises a sealing assembly sleeved on a piston rod, wherein the sealing assembly comprises a shell fixedly connected with the hydraulic cylinder, a plurality of sealing rings are arranged at the joint of the shell and the piston rod, an annular oil groove is arranged at the center inside the shell, the oil groove is connected with a counter bore channel communicated with the outside, an oil distribution ring is arranged in the oil groove, a first strong magnet is arranged on the outer side of the oil distribution ring, a moving ring is sleeved outside the shell, a second strong magnet is arranged on the inner side of the moving ring, the opposite surfaces of the first strong magnet and the second strong magnet are opposite in polarity, and at least one section of the moving ring is provided with an oil injection hole with the aperture not smaller than the aperture of the counter bore channel. The invention can control the oil distribution ring to rotate at any time, prevent the lubricating oil on the oil distribution ring from depositing to one position, and uniformly coat the lubricating oil on the periphery of the piston rod, thereby reducing the abrasion to the maximum extent.

Description

Oil spraying ring for lubricating oil seal of hydraulic cylinder

Technical Field

The invention relates to the technical field of hydraulic cylinders, in particular to an oil injection ring for lubricating an oil seal of a hydraulic cylinder.

Background

The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and makes linear reciprocating motion, has simple structure and reliable work, and is widely applied to various mechanical systems.

The hydraulic cylinder includes a cylinder body and a piston rod, and is more mechanically adjusted by hydraulically driving the length of the piston rod extending out of the cylinder body. The outside of the existing cylinder body is not provided with a lubricating structure aiming at the piston rod, and the piston rod is greatly abraded in the retraction process.

In order to solve the abrasion problem, the chinese patent application with publication number CN108612704A discloses a sealing structure for a piston rod, which comprises a hydraulic cylinder, a guide sleeve, a piston rod, a first oil seal, a second oil seal, a guide ring, a first rubber ring, an oil storage cavity, a straight pipe, a pipe cover, a first dust ring, a second dust ring, a gland, a fine hole, a second rubber ring, an external thread and an internal thread. The dustproof structure is reasonable, the first dustproof ring and the second dustproof ring can prevent dust between the piston rod and the guide sleeve, the gland is tightly pressed on the surface of one side of the guide sleeve when the gland is connected with the guide sleeve, and the second dustproof ring can be pressed on the surface of the piston rod through the second dustproof ring and the circular truncated cone structure in the gland, so that the dustproof effect can be improved; through oil storage chamber and first rubber circle, when the piston rod removed, can make fluid flow from the pore, scribble fluid for the piston rod surface, lubricate for the piston rod surface to the wearing and tearing of reducible piston rod surface and oil blanket have improved life. "

However, in the oil coating (oil spraying) structure of the sealing structure, when the piston rod runs obliquely in the same direction for a long time, lubricating oil sinks under the action of gravity, so that the oil distribution at the upper part and the lower part is uneven, and the lubricating effect is influenced.

Disclosure of Invention

The present invention is directed to improvements and innovations in the disadvantages and problems of the related art, and provides a spray ring that provides uniform distribution of lubricant.

The technical scheme includes that the oil injection ring for lubricating the oil seal of the hydraulic cylinder is constructed and comprises a sealing assembly sleeved on a piston rod, the sealing assembly comprises a shell fixedly connected with the hydraulic cylinder, a plurality of sealing rings are arranged at the joint of the shell and the piston rod, an annular oil groove is formed in the center of the interior of the shell and connected with a counter bore channel communicated with the exterior, an oil distribution ring is arranged in the oil groove, a first strong magnet is arranged on the outer side of the oil distribution ring, a moving ring is sleeved on the exterior of the shell, a second strong magnet is arranged on the inner side of the moving ring, opposite faces of the first strong magnet and the second strong magnet are opposite in polarity, and at least one section of the moving ring is provided with an oil injection hole with the diameter not smaller than the diameter of the counter bore channel.

In one embodiment, the outside of the rotating ring is provided with a shifting sheet.

In one embodiment, the shell is provided with two limiting rings which are respectively positioned at two sides of the movable ring.

In one embodiment, the surface of one of the limiting rings is provided with a scale, and the surface of the movable ring is provided with an indication mark.

In one embodiment, the shell is provided with an electric device, the electric device comprises a motor and a gear connected with an output shaft of the motor, one side surface of the rotating ring is provided with an annular rack matched with the gear, and the electric device further comprises a control circuit which controls the motor to rotate at a constant speed.

The invention has the advantages and beneficial effects that: the invention is provided with the rotatable moving ring, the first strong magnet on the moving ring drives the second strong magnet on the oil distribution ring, the oil distribution ring can be controlled to rotate at any time, the lubricating oil on the oil distribution ring is prevented from being deposited at one position, and the lubricating oil is uniformly coated around the piston rod, so that the abrasion is reduced to the maximum extent.

Drawings

Fig. 1 is a schematic view of the overall structure of an embodiment.

Fig. 2 is a schematic structural diagram of an oil distribution ring in the embodiment.

Fig. 3 is a schematic structural diagram of the rotating ring in the embodiment.

FIG. 4 is a schematic structural diagram of the movable ring and the stop collar in the embodiment.

Fig. 5 is a schematic view of the overall structure of another embodiment.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "disposed" on another element, it can be directly disposed or attached to the other element or intervening elements may also be present. The terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Example 1

As shown in fig. 1-4, a fuel injection ring for lubricating a hydraulic cylinder oil seal comprises a sealing assembly sleeved on a piston rod 1, wherein the sealing assembly comprises a shell 5 fixedly connected with a hydraulic cylinder 4, a plurality of sealing rings are arranged at the joint of the shell 5 and the piston rod 1, an annular oil groove 6 is arranged at the center inside the shell 5, the oil groove 6 is connected with a counter bore channel 7 communicated with the outside, an oil distribution ring 8 is arranged in the oil groove 6, a first strong magnet 9 is arranged on the outer side of the oil distribution ring 8, a moving ring 10 is sleeved outside the shell 5, a second strong magnet 11 is arranged on the inner side of the moving ring 10, the opposite faces of the first strong magnet 9 and the second strong magnet 11 are opposite in polarity, and an oil injection hole 12 with an aperture larger than that of the counter bore channel 7 is arranged on one section of the moving ring 10.

Further, for convenience of operation, the outside of the rotating ring 10 is provided with a pick 13.

The positioning of the rotating ring can be realized only by the mutual attraction of the first strong magnet 9 and the second strong magnet 11, the reliability is improved, and the shell 5 is provided with two limiting rings 14 which are respectively positioned at two sides of the rotating ring 10.

In order to improve the accuracy of the operation, the surface of one of the stop collars 14 is provided with a scale 15, and the surface of the movable ring 10 is provided with an indication mark 16.

Example 2

As shown in fig. 5, unlike embodiment 1, the present embodiment automatically controls the rotation of the movable ring 10 in an electric manner, which is more effective than the manual operation in embodiment 1.

The shell 5 is provided with an electric device, the electric device comprises a motor 17 and a gear 18 connected with an output shaft of the motor 17, one side surface of the movable ring 10 is provided with an annular rack 19 meshed with the gear 18, and the electric device further comprises a control circuit which controls the motor 17 to rotate at a constant speed.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The invention improves the oil distribution ring and the related control structure, other structures which are not explicitly shown can adopt the structure in CN108612704A, such as oil storage glue formed between the oil distribution ring (the first rubber ring) and an oil groove, a plurality of pores arranged on the oil distribution ring, and the like.

When the oil distribution ring is used, the movable ring is manually and regularly pushed, so that the lubricating oil on the oil distribution ring is uniformly coated on the periphery of the piston rod. The automatic rotation can also be carried out in an electric mode, and the related electric control structure is the conventional technology. The counter bore channel is provided with the counter bore so that the plug covering the channel is positioned below the surface of the shell and is prevented from clamping the rotation of the movable ring, when oil needs to be filled into the oil distribution ring, the oil filling hole is aligned with the counter bore channel, and then the oil pipe is externally connected to fill lubricating oil.

The embodiments of the present invention are described only for the preferred embodiments of the present invention, and not for the limitation of the concept and scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall into the protection scope of the present invention, and the technical content of the present invention which is claimed is fully set forth in the claims.

Claims

1. The utility model provides a be used for lubricated oil spout ring of pneumatic cylinder oil blanket which characterized in that: locate the seal assembly on the piston rod including the cover, seal assembly include the casing of fixed connection pneumatic cylinder, the junction of casing and piston rod is provided with a plurality of sealing washers, the inside center of casing be provided with annular oil groove, the oil groove connect the outside counter bore passageway of a intercommunication, the oil groove in be provided with the oil distribution ring, the outside of oil distribution ring be provided with first strong magnet, the outside cover of casing be equipped with a rotating ring, the inboard of rotating ring be provided with the strong magnet of second, the opposite face polarity of the strong magnet of first strong magnet and second is opposite, at least one section of rotating ring is provided with the oil filler point that the aperture is not less than counter bore passageway aperture.

2. The oil spray ring for oil seal lubrication of hydraulic cylinders of claim 1, wherein: the outside of the movable ring is provided with a shifting sheet.

3. The oil spray ring for oil seal lubrication of hydraulic cylinders of claim 1, wherein: the shell is provided with two limiting rings which are respectively positioned at two sides of the movable ring.

4. The spray ring of claim 3 for oil-sealed lubrication of hydraulic cylinders, wherein: the surface of one of them spacing collar is provided with the scale, the surface of rotating ring is provided with the index mark.

5. The oil spray ring for oil seal lubrication of hydraulic cylinders of claim 1, wherein: the shell is provided with an electric device, the electric device comprises a motor and a gear connected with an output shaft of the motor, one side surface of the rotating ring is provided with an annular rack matched with the gear, and the electric device further comprises a control circuit which controls the motor to rotate at a constant speed.