CN111692198A - Self-lubricating shaft pin - Google Patents

Abstract

The invention discloses a self-lubricating shaft pin, comprising a shaft pin body; the upper end of the shaft pin body is provided with an oil filling nozzle, the surface of the shaft pin body is provided with an oil outlet, and the oil filling nozzle is opened inside the shaft pin body through the opening of the oil filling nozzle. The oil injection channel is connected with the oil outlet, and the lubricating oil is injected into the inside of the shaft pin body from the oil injection nozzle, and the lubricating oil flows along the oil injection channel and flows out from the surface of the oil outlet, forming a lubricating layer on the outside of the shaft pin body; The outer surface of the shaft pin body is provided with a surface oil channel, and the surface oil channel is a groove-like structure. In the present invention, an oil filling nozzle is arranged on the upper end of the shaft pin body, and an oil outlet is provided on the surface of the shaft pin body, and lubricating oil is injected into the interior of the shaft pin body from the oil filling nozzle. The surface of the port flows out, so that a uniform lubricating layer is formed in the gap between the shaft pin body and the shaft sleeve, which solves the problem that the shaft pin in the prior art is difficult to fill with oil and has no self-lubricating ability.

Description

A self-lubricating shaft pin

technical field

The invention relates to the technical field of shaft pin lubrication, in particular to a self-lubricating shaft pin.

Background technique

The pin shaft is a kind of standardized fastener, which can be fixed statically or moved relative to the connected parts. It is mainly used for the hinged connection of two parts to form a hinged connection. The pin is usually locked with a split pin, which is reliable and easy to disassemble.

After the traditional shaft pin penetrates into the shaft sleeve, only the lubricating oil can be applied to the periphery of the shaft pin with a brush. The lubricating oil cannot effectively enter the gap between the contact surface of the shaft pin and the shaft sleeve, and the lubrication effect is not ideal. It will corrode, causing the transmission connection to jam and refuse to move.

Therefore, in view of the above status quo, it is urgent to develop a self-lubricating shaft pin to overcome the deficiencies in current practical applications.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a self-lubricating shaft pin to solve the above-mentioned problems in the background art.

To achieve the above object, the present invention provides the following technical solutions:

A self-lubricating shaft pin, comprising a shaft pin body;

The upper end of the shaft pin body is provided with a grease nozzle,

The surface of the shaft pin body is provided with an oil outlet,

The oil filling nozzle communicates with the oil outlet through the oil filling channel opened inside the shaft pin body.

Inject lubricating oil into the shaft pin body from the grease nipple,

The lubricating oil flows along the oil filling channel,

and flow out from the surface of the oil outlet,

A lubricating layer is formed on the outside of the shaft pin body;

The outer surface of the shaft pin body is provided with a surface oil channel,

The oil channel on the surface is a groove-like structure.

As a further scheme of the present invention:

The surface oil passages include the normal swirl oil passage and the reverse swirl oil passage.

Both the forward and reverse oil passages are of threaded structure.

The forward and reverse oil passages have opposite directions of rotation.

As a further scheme of the present invention:

The forward rotation oil passage and the reverse rotation oil passage extend from the upper end face of the shaft pin body to the lower end face.

As a further scheme of the present invention:

The oil outlet is opened at the middle position of the shaft pin body,

After the lubricating oil flows out from the oil outlet, it first flows downward into the surface oil passage at the lower part of the shaft pin body.

After the lower surface oil channel is filled with lubricating oil,

The lubricating oil gradually flows into the upper surface oil channel,

until the gap between the pin body and the bushing is completely filled.

As a further scheme of the present invention:

The shaft pin body includes an upper shaft body and a lower shaft body,

The upper shaft body and the lower shaft body are fixedly connected through the connecting shaft.

As a further scheme of the present invention:

The upper shaft body and the lower shaft body have the same diameter,

The diameter of the connecting shaft is smaller than the diameter of the upper shaft body or the lower shaft body,

When the upper shaft body and the lower shaft body are fixedly connected by the connecting shaft,

The connecting shaft forms an annular oil guide groove on the shaft pin body.

As a further scheme of the present invention:

The oil outlet is opened in the connecting shaft,

Both the forward-rotating oil passage and the reverse-rotating oil passage are communicated with the oil-guiding groove,

After the lubricating oil flows out of the oil outlet, it gradually overflows the oil guide groove.

It flows into the surface oil channel along the junction of the surface oil channel and the oil guide groove.

As a further scheme of the present invention:

A top ball is movably installed inside the oil filling nozzle,

The top ball is fixedly connected to the bottom of the grease nipple through a telescopic spring.

As a further scheme of the present invention:

The oil injection channel includes a vertical channel and a lateral channel opened inside the shaft pin body.

As a further scheme of the present invention:

The lower end of the vertical channel is communicated with the horizontal channel,

The upper end of the vertical channel is communicated with the oil filling nozzle,

The transverse channel communicates with the oil outlet.

Compared with the prior art, the beneficial effects of the present invention are: the present invention is provided with an oil filling nozzle on the upper end of the shaft pin body, and an oil outlet is provided on the surface of the shaft pin body, and lubrication is injected into the interior of the shaft pin body from the oil filling nozzle. The oil and lubricating oil flow along the oil filling channel and flow out from the surface of the oil outlet, so that a uniform lubricating layer is formed in the gap between the shaft pin body and the shaft sleeve, which solves the difficulty of oil filling in the shaft pin in the prior art , It does not have the problem of self-lubricating ability to avoid jamming and refusal to move the transmission connection.

Description of drawings

FIG. 1 is a front view of Embodiment 1 of the self-lubricating shaft pin.

FIG. 2 is a front view of Embodiment 2 of the self-lubricating shaft pin.

Figure 3 is a side view of a self-lubricating pin.

Figure 4 is a cross-sectional view of a self-lubricating shaft pin.

In the picture:

1-shaft pin body,

101-upper shaft,

102-lower shaft,

103 - connecting shaft,

104-Vertical channel,

105 - Lateral channel,

2-Grease nozzle,

201-top beads,

202-Telescopic spring,

3- oil outlet,

4- Surface oil passages.

Detailed ways

The technical solution of the present patent will be described in further detail below in conjunction with specific embodiments.

Embodiments of the present patent are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present patent, but should not be construed as a limitation on the present patent.

In the description of this patent, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present patent and simplifying the description, rather than indicating or implying The device or element referred to must have, be constructed, and operate in a particular orientation and is not to be construed as a limitation of this patent.

In the description of this patent, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected" and "arranged" should be understood in a broad sense. , it can also be detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific situations.

Example 1

Referring to FIG. 1 , in an embodiment of the present invention, a self-lubricating axle pin includes an axle pin body 1 ; the upper end of the axle pin body 1 is provided with an oil injection nozzle 2 , and the surface of the axle pin body 1 is provided with an oil outlet Port 3, the oil injection nozzle 2 is communicated with the oil outlet 3 through the oil injection channel opened in the shaft pin body 1, and the lubricating oil is injected into the shaft pin body 1 from the oil injection nozzle 2, and the lubricating oil flows along the oil injection channel and flows from the outlet The surface of the oil port 3 flows out, forming a lubricating layer on the outside of the shaft pin body 1; the outer surface of the shaft pin body 1 is provided with a surface oil passage 4, the surface oil passage 4 is a groove-like structure, and the surface oil passage 4 includes a positive The swirl oil passage and reverse swirl oil passage, the forward swirl oil passage and the reverse swirl oil passage are all threaded structures, and the forward swirl oil passage and the reverse swirl oil passage have opposite directions of rotation, and the forward swirl oil passage and the reverse swirl oil passage are from the shaft pin. The upper end face of the main body 1 extends to the lower end face, and the lubricating oil flows out from the oil outlet 3 and flows along the forward and reverse rotation oil passages, thereby forming a uniform layer in the gap between the shaft pin body 1 and the shaft sleeve. The lubricating layer is provided, which solves the problem that the shaft pin in the prior art is difficult to inject oil and does not have self-lubricating ability;

Specifically, in this embodiment, the oil outlet 3 is opened in the middle of the shaft pin body 1, and the lubricating oil flows out of the oil outlet 3 and then flows downward into the surface oil passage 4 at the lower part of the shaft pin body 1. After the lower surface oil passage 4 is filled with lubricating oil, the lubricating oil gradually flows into the upper surface oil passage 4 until the gap between the shaft pin body 1 and the shaft sleeve is completely filled.

Example 2

Referring to FIG. 1 , in an embodiment of the present invention, a self-lubricating axle pin includes an axle pin body 1 ; the upper end of the axle pin body 1 is provided with an oil injection nozzle 2 , and the surface of the axle pin body 1 is provided with an oil outlet Port 3, the oil injection nozzle 2 is communicated with the oil outlet 3 through the oil injection channel opened in the shaft pin body 1, and the lubricating oil is injected into the shaft pin body 1 from the oil injection nozzle 2, and the lubricating oil flows along the oil injection channel and flows from the outlet The surface of the oil port 3 flows out, forming a lubricating layer on the outside of the shaft pin body 1; the outer surface of the shaft pin body 1 is provided with a surface oil passage 4, the surface oil passage 4 is a groove-like structure, and the surface oil passage 4 includes a positive The swirl oil passage and reverse swirl oil passage, the forward swirl oil passage and the reverse swirl oil passage are all threaded structures, and the forward swirl oil passage and the reverse swirl oil passage have opposite directions of rotation, and the forward swirl oil passage and the reverse swirl oil passage are from the shaft pin. The upper end face of the main body 1 extends to the lower end face, and the lubricating oil flows out from the oil outlet 3 and flows along the forward and reverse rotation oil passages, thereby forming a uniform layer in the gap between the shaft pin body 1 and the shaft sleeve. The lubricating layer is provided, which solves the problem that the shaft pin in the prior art is difficult to inject oil and does not have self-lubricating ability;

Specifically, in this embodiment, the oil outlet 3 is opened in the middle of the shaft pin body 1, and the lubricating oil flows out of the oil outlet 3 and then flows downward into the surface oil passage 4 at the lower part of the shaft pin body 1. After the lower surface oil passage 4 is filled with lubricating oil, the lubricating oil gradually flows into the upper surface oil passage 4 until the gap between the shaft pin body 1 and the shaft sleeve is completely filled.

Please refer to Figure 2-3, the difference between this embodiment and Embodiment 1 is:

The shaft pin body 1 includes an upper shaft body 101 and a lower shaft body 102. The upper shaft body 101 and the lower shaft body 102 are fixedly connected by a connecting shaft 103. The upper shaft body 101 and the lower shaft body 102 have the same diameter, and the connecting shaft 103 The diameter of the upper shaft body 101 or the lower shaft body 102 is smaller than the diameter of the upper shaft body 101 or the lower shaft body 102. When the upper shaft body 101 and the lower shaft body 102 are fixedly connected by the connecting shaft 103, the connecting shaft 103 forms an annular oil guide groove in the shaft pin body 1;

The oil outlet 3 is opened in the connecting shaft 103, and the forward and reverse rotation oil passages are both connected to the oil guide groove. The connection between the channel 4 and the oil guide groove flows into the surface oil channel 4. Compared with Embodiment 1, in this embodiment, the speed of the lubricating oil flowing into the surface oil channel 4 is faster, and the time required to form the lubricating layer is shorter.

Example 3

Referring to FIG. 1 , in an embodiment of the present invention, a self-lubricating axle pin includes an axle pin body 1 ; the upper end of the axle pin body 1 is provided with an oil injection nozzle 2 , and the surface of the axle pin body 1 is provided with an oil outlet Port 3, the oil injection nozzle 2 is communicated with the oil outlet 3 through the oil injection channel opened in the shaft pin body 1, and the lubricating oil is injected into the shaft pin body 1 from the oil injection nozzle 2, and the lubricating oil flows along the oil injection channel and flows from the outlet The surface of the oil port 3 flows out, forming a lubricating layer on the outside of the shaft pin body 1; the outer surface of the shaft pin body 1 is provided with a surface oil passage 4, the surface oil passage 4 is a groove-like structure, and the surface oil passage 4 includes a positive The swirl oil passage and reverse swirl oil passage, the forward swirl oil passage and the reverse swirl oil passage are all threaded structures, and the forward swirl oil passage and the reverse swirl oil passage have opposite directions of rotation, and the forward swirl oil passage and the reverse swirl oil passage are from the shaft pin. The upper end face of the main body 1 extends to the lower end face, and the lubricating oil flows out from the oil outlet 3 and flows along the forward and reverse rotation oil passages, thereby forming a uniform layer in the gap between the shaft pin body 1 and the shaft sleeve. The lubricating layer is provided, which solves the problem that the shaft pin in the prior art is difficult to inject oil and does not have self-lubricating ability;

Specifically, in this embodiment, the oil outlet 3 is opened in the middle of the shaft pin body 1, and the lubricating oil flows out of the oil outlet 3 and then flows downward into the surface oil passage 4 at the lower part of the shaft pin body 1. After the lower surface oil passage 4 is filled with lubricating oil, the lubricating oil gradually flows into the upper surface oil passage 4 until the gap between the shaft pin body 1 and the shaft sleeve is completely filled.

Please refer to Figure 2-3, the difference between Embodiment 2 and Embodiment 1 is:

The shaft pin body 1 includes an upper shaft body 101 and a lower shaft body 102. The upper shaft body 101 and the lower shaft body 102 are fixedly connected by a connecting shaft 103. The upper shaft body 101 and the lower shaft body 102 have the same diameter, and the connecting shaft 103 The diameter of the upper shaft body 101 or the lower shaft body 102 is smaller than the diameter of the upper shaft body 101 or the lower shaft body 102. When the upper shaft body 101 and the lower shaft body 102 are fixedly connected by the connecting shaft 103, the connecting shaft 103 forms an annular oil guide groove in the shaft pin body 1;

The oil outlet 3 is opened in the connecting shaft 103, and the forward and reverse rotation oil passages are both connected to the oil guide groove. The connection between the channel 4 and the oil guide groove flows into the surface oil channel 4. Compared with Example 1, in Example 2, the speed of the lubricating oil flowing into the surface oil channel 4 is faster, and the time required to form the lubricating layer is shorter.

Please refer to FIG. 4 , the difference between this embodiment and Embodiment 1-2 is:

The top ball 201 is movably installed inside the oil injection nozzle 2, and the top ball 201 is fixedly connected with the bottom of the oil injection nozzle 2 through a telescopic spring 202. In the initial state, the top ball 201 abuts on the bottom of the oil injection nozzle 2 under the extrusion action of the telescopic spring 202. At the oil inlet, prevent debris from entering the oil filling nozzle 2; in the oil filling state, the lubricating oil squeezes the top ball 201 to move down, forcing the oil inlet to open, and the lubricating oil enters the inside of the oil filling nozzle 2; after the oil filling is completed, the expansion spring 202 Drive the top ball 201 to reset to prevent the lubricating oil from flowing out from the oil filling nozzle 2;

Specifically, in this embodiment, the oil injection channel includes a vertical channel 104 and a transverse channel 105 opened inside the shaft pin body 1 , the lower end of the vertical channel 104 is communicated with the transverse channel 105 , and the upper end of the vertical channel 104 is connected with the injection channel 105 . The oil nozzle 2 is in communication, and the transverse channel 105 is in communication with the oil outlet 3 , so that the lubricating oil added by the oil injection nozzle 2 is led out from the oil outlet 3 .

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, some modifications and improvements can be made without departing from the concept of the present invention, and these should also be regarded as the protection of the present invention. scope, these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims (10)

1. A self-lubricating shaft pin, comprising a shaft pin body (1); characterized in that, an upper end of the shaft pin body (1) is provided with a grease nozzle (2), and a surface of the shaft pin body (1) is provided with There is an oil outlet (3), and the oil injection nozzle (2) communicates with the oil outlet (3) through an oil injection channel opened inside the shaft pin body (1), from the oil injection nozzle (2) to the inside of the shaft pin body (1) Lubricating oil is injected, the lubricating oil flows along the oil injection channel, and flows out from the surface of the oil outlet (3), forming a lubricating layer on the outside of the shaft pin body (1); the outer surface of the shaft pin body (1) is provided with The surface oil channel (4), and the surface oil channel (4) is a groove-like structure. 2 . The self-lubricating shaft pin according to claim 1 , wherein the surface oil passage ( 4 ) includes a forward rotation oil passage and a reverse rotation oil passage, and the forward rotation oil passage and the reverse rotation oil passage are both threaded structures. 3 . , the direction of rotation of the forward and reverse oil passages is opposite. 3 . The self-lubricating shaft pin according to claim 2 , wherein the forward and reverse rotation oil passages extend from the upper end face of the shaft pin body ( 1 ) to the lower end face. 4 . 4 . The self-lubricating shaft pin according to claim 3 , wherein the oil outlet ( 3 ) is opened at the middle position of the shaft pin body ( 1 ), and the lubricating oil flows out from the oil outlet ( 3 ) after the lubricating oil flows out. 5 . First, it flows downward into the surface oil channel (4) at the lower part of the shaft pin body (1). After the lower surface oil channel (4) is filled with lubricating oil, the lubricating oil gradually flows into the upper surface oil channel (4) until it is completely Fill the gap between the shaft pin body (1) and the shaft sleeve. 5. The self-lubricating shaft pin according to claim 3 or 4, wherein the shaft pin body (1) comprises an upper shaft body (101) and a lower shaft body (102), and the upper shaft body (101) and the lower shaft body (102) is fixedly connected through the connecting shaft (103). 6. The self-lubricating shaft pin according to claim 5, characterized in that the upper shaft body (101) and the lower shaft body (102) have the same diameter, and the diameter of the connecting shaft (103) is smaller than that of the upper shaft body (101) ) or the diameter of the lower shaft body (102), when the upper shaft body (101) and the lower shaft body (102) are fixedly connected by the connecting shaft (103), the connecting shaft (103) forms an annular guide on the shaft pin body (1) oil tank. 7 . The self-lubricating shaft pin according to claim 6 , wherein the oil outlet ( 3 ) is opened in the connecting shaft ( 103 ), and the positive and reverse oil passages are connected to the guide shaft ( 103 ). 8 . The oil groove is connected, and the lubricating oil flows out from the oil outlet (3) and gradually overflows the oil guide groove, and flows into the surface oil passage (4) along the connection between the surface oil passage (4) and the oil guide groove. 8 . The self-lubricating shaft pin according to claim 1 , wherein a top ball ( 201 ) is movably installed inside the grease nipple ( 2 ), and the top ball ( 201 ) is connected to the grease nipple ( 2) The bottom of the fixed connection. 9 . The self-lubricating shaft pin according to claim 1 , wherein the oil injection channel comprises a vertical channel ( 104 ) and a transverse channel ( 105 ) opened inside the shaft pin body ( 1 ). 10 . 10. The self-lubricating shaft pin according to claim 9, characterized in that the lower end of the vertical channel (104) is communicated with the transverse channel (105), and the upper end of the vertical channel (104) is communicated with the oil filling nozzle (2) , the transverse channel (105) communicates with the oil outlet (3).

Images