CN213685383U - Oil injection lubricating system - Google Patents

Abstract

The utility model relates to a power machinery technical field discloses an oiling lubricating system. The utility model discloses a control oil feed case action in order to open the oil inlet, make lubricating oil get into through the oil inlet and annotate in the oil pocket, close the oil inlet again, the plunger action makes it become high pressure oil with the indoor lubricating oil of compression oil pocket, and the action of plunger compression oiling valve case is controlled at a certain moment so that annotate the indoor high pressure oil of oil pocket through the oiling mouth blowout to treating lubricating arrangement again. Because the plunger periodically axially reciprocates relative to the oil injection cavity and is matched with the actions of the oil inlet valve core and the oil injection valve core, new lubricating oil can be continuously fed into the oil injection cavity through the oil inlet, then the oil inlet is closed, the lubricating oil in the oil injection cavity is compressed, and the compressed lubricating oil is injected to a device to be lubricated, so that the lubricating oil is continuously provided for the device to be lubricated, and the abrasion of a moving part of the device to be lubricated due to the lack of the lubricating oil is avoided.

Description

Oil injection lubricating system

Technical Field

The utility model relates to a power machinery technical field especially relates to an oiling lubricating system.

Background

In reciprocating power machines such as compressors, internal combustion engines, etc., the high speed and high frequency operation of moving parts causes wear of the moving parts, resulting in a drastic reduction in the performance, life, etc., of the equipment. In order to improve the friction and wear conditions of the moving parts, an independent oil-filling lubrication system is generally required to be designed to perform oil-filling forced lubrication on the friction surfaces of the moving parts. Since the lubricating oil is generally not recycled after use or directly burned, it is necessary to replenish the moving parts with lubricating oil in a timely manner.

The current oil-filling lubrication system cannot timely supplement the lubricating oil for the moving part, and therefore, an oil-filling lubrication system is needed to solve the technical problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an oiling lubricating system can be in time for the motion spare supplementary lubricating oil to reduce the wearing and tearing of motion spare.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides an oiling lubricating system, is including the valve body that is equipped with the oiling cavity, be equipped with on the valve body with oiling mouth and the oil inlet of oiling cavity intercommunication, oiling lubricating system still includes:

the oil injection valve core is arranged in the oil injection cavity and can axially move relative to the oil injection cavity so as to enable the oil injection cavity to be selectively communicated with or disconnected from the oil injection port;

an oil inlet spool movable relative to the oil filling chamber to selectively communicate or disconnect the oil filling chamber with the oil inlet;

the plunger is arranged in the oil injection cavity, the outer wall of the plunger is in sealing connection with the inner wall of the oil injection cavity, and the plunger can periodically axially slide in a reciprocating manner relative to the oil injection cavity.

As a preferable technical solution of the above oil-filled lubrication system, the oil-filled lubrication system further includes an eccentric driving assembly for driving the plunger to axially slide back and forth relative to the oil-filled chamber.

As a preferred solution of the above oil-filled lubrication system, the eccentric drive assembly includes:

the outer peripheral wall of the cam abuts against one axial end face of the plunger;

the output shaft of the motor is in transmission connection with the cam;

the device comprises a rotating speed sensor and/or a rotating angle sensor, wherein the rotating speed sensor is used for measuring the rotating speed of an output shaft of the motor, and the rotating angle sensor is used for measuring the rotating angle of the output shaft of the motor.

As a preferred technical scheme of the above oil injection lubricating system, the oil injection lubricating system further comprises an oil inlet driving unit, wherein the oil inlet driving unit is used for driving the oil inlet valve core to move so as to selectively block or open the oil inlet; the oil inlet driving unit is an electromagnet or a piezoelectric structure.

As a preferable technical solution of the above oil injection lubrication system, the oil injection system further includes an oil injection driving unit, configured to drive the oil injection valve core to move so as to selectively connect or disconnect the oil injection cavity with or from the oil injection port; the oil injection driving unit is an electromagnet or a piezoelectric structure.

As a preferred technical solution of the above oil-injection lubrication system, the oil-injection lubrication system further includes:

the transition block is arranged in the oil injection cavity, a main oil drainage hole communicated with the oil injection cavity and a transition oil hole communicated with the oil injection port are formed in the transition block, one end of the oil injection valve core is inserted into the main oil drainage hole and is in sliding connection with the main oil drainage hole, and therefore the main oil drainage hole is selectively communicated with or disconnected from the transition oil hole.

As a preferred technical scheme of the above oil injection lubrication system, a spare oil injection port is arranged on the valve body, and the oil inlet, the spare oil injection port and the oil injection port are sequentially arranged along the axial direction of the valve body; the transition block is axially slidable relative to the oil plenum to selectively communicate with and block off one of the backup oil fill port and the oil fill port.

As a preferable technical solution of the above oil injection lubrication system, the oil injection lubrication system further includes an emergency elastic member for providing a force for the transition block to axially slide relative to the oil injection cavity so as to block the spare oil injection port.

As an optimal technical scheme of the oil injection lubricating system, the inner wall of the oil injection cavity is provided with a limiting step surface, one end of the emergency elastic part is fixed relative to the valve body, and the transition block is clamped between the limiting step surface and the other end of the emergency elastic part.

As a preferable technical scheme of the oil injection lubricating system, the outer wall of the oil injection valve core is matched with the inner wall conical surface of the oil inlet.

The utility model has the advantages that: the utility model discloses a control oil feed case action in order to open the oil inlet, make lubricating oil get into through the oil inlet and annotate in the oil pocket, close the oil inlet again, the plunger action makes it become high pressure oil with the indoor lubricating oil of compression oil pocket, controls the action of oiling case so that annotate the indoor high pressure oil of oil pocket through the blowout of oiling mouth to treating lubricating arrangement at a certain moment of plunger compression oiling cavity internal lubricating oil.

Because the plunger periodically axially reciprocates relative to the oil injection cavity, and is matched with the actions of the oil inlet valve core and the oil injection valve core, new lubricating oil can be continuously fed into the oil injection cavity through the oil inlet, the lubricating oil in the oil injection cavity is compressed, and the compressed lubricating oil is sprayed to a device to be lubricated, so that the lubricating oil is continuously provided for the device to be lubricated, sufficient lubricating oil in the device to be lubricated is ensured, and the moving part of the device to be lubricated is prevented from being abraded due to lack of the lubricating oil.

The utility model provides an oiling lubricating system controls through the action to plunger, oil feed case and oiling case, can realize advance oil volume, oil feed time interval, oiling volume and oiling time interval's nimble adjustable under the different situation to satisfy the user demand of different operating modes.

The utility model provides an oiling lubricating system has realized the modularized design, the installation of being convenient for, and the range of application is wide.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is an application schematic diagram of an oil injection lubrication system provided by an embodiment of the present invention;

fig. 2 is a cross-sectional view of an oil injection lubrication system provided in an inoperative state according to an embodiment of the present invention;

fig. 3 is a sectional view of the oil-filling lubrication system provided by the embodiment of the present invention in an operating state;

fig. 4 is a cross-sectional view of the oil lubrication system in an emergency state according to an embodiment of the present invention.

In the figure:

1. a valve body; 11. an oiling chamber; 12. an oil inlet; 13. an oil filling port; 14. an oil filling port is reserved; 15. a limiting step surface;

21. an oil inlet valve core; 22. an oil inlet driving unit;

31. an oil filling valve core; 32. an oiling drive unit;

41. a transition block; 411. a main oil drainage hole; 412. a transition oil hole; 42. an emergency elastic member;

51. a plunger; 521. a motor; 522. a cam;

6. a cylinder;

7. a controller;

100. and (3) an oil injection lubricating system.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

As shown in fig. 1, the present embodiment provides an oil lubrication system for supplying lubricating oil to a device to be filled, such as a cylinder 6 or other device to be filled. In this embodiment, a device to be filled with oil is taken as an example of the air cylinder 6, four air cylinders 6 are provided, and each air cylinder 6 is provided with one oil filling and lubricating system 100.

As shown in fig. 2 to 4, the oil filling lubrication system 100 provided by the present embodiment includes a valve body 1, an oil filling valve core 31, an oil inlet valve core 21, and a plunger 51, wherein the valve body 1 is provided with an oil filling cavity 11, and an oil filling port 13 and an oil inlet 12 which are communicated with the oil filling cavity 11, and the oil filling valve core 31 is provided in the oil filling cavity 11 and can axially move relative to the oil filling cavity 11, so that the oil filling cavity 11 is selectively communicated with or disconnected from the oil filling port 13; the oil inlet spool 21 is movable relative to the oil filling chamber 11 to selectively connect or disconnect the oil filling chamber 11 with the oil inlet 12; the plunger 51 is arranged in the oil filling cavity 11, the outer wall of the plunger 51 is connected with the inner wall of the oil filling cavity 11 in a sealing mode, and the plunger 51 can periodically slide axially and reciprocally relative to the oil filling cavity 11.

In the embodiment, the oil inlet valve core 21 is controlled to move to open the oil inlet 12, so that the lubricating oil enters the oil filling cavity 11 through the oil inlet 12, then the oil inlet 12 is closed, the plunger 51 moves to compress the lubricating oil in the oil filling cavity 11 to make the lubricating oil become high-pressure oil, and at a certain moment when the plunger 51 compresses the lubricating oil in the oil filling cavity 11, the oil filling valve core 31 is controlled to move to make the high-pressure oil in the oil filling cavity 11 be sprayed out to a device to be lubricated through the oil filling opening 13.

Because the plunger 51 periodically axially reciprocates relative to the oil injection cavity 11 and is matched with the actions of the oil inlet valve core 21 and the oil injection valve core 31, new lubricating oil can be continuously fed into the oil injection cavity 11 through the oil inlet 12, the lubricating oil in the oil injection cavity 11 is compressed, and the compressed lubricating oil is injected to a device to be lubricated, so that the lubricating oil is continuously provided for the device to be lubricated, sufficient lubricating oil in the device to be lubricated is ensured, and the moving part of the device to be lubricated is prevented from being abraded due to lack of the lubricating oil.

The lubricating oil ejected from the oil filling port 13 can be directly injected into the lubricating oil passage of the cylinder 6, or can be injected into the lubricating oil passage of the cylinder 6 through an oil injector, which is not limited in detail herein.

Further, the oil-filled lubrication system 100 further includes an eccentric driving assembly for driving the plunger 51 to axially slide back and forth relative to the oil-filled chamber 11. In other embodiments, a linear driving structure such as a linear motor, a cylinder, etc. may be used instead of the eccentric driving assembly to realize the periodic axial reciprocating sliding of the plunger 51 relative to the oil injection chamber 11.

Specifically, the eccentric driving assembly includes a cam 522, a motor 521, a rotation speed sensor and a rotation angle sensor, wherein the outer peripheral wall of the cam 522 abuts against one axial end face of the plunger 51, an output shaft of the motor 521 is in transmission connection with the cam 522, the rotation speed sensor is used for measuring the rotation speed of the output shaft of the motor 521, and the rotation angle sensor is used for measuring the rotation angle of the output shaft of the motor 521. In this embodiment, one motor 521 is provided for each of the four cylinders 6, and specifically, a transmission shaft is connected to an output shaft of the motor 521, and cams 522 corresponding to the plungers 51 are provided on the transmission shaft. In other embodiments, one eccentric drive assembly may be provided for each cylinder 6, but this is relatively costly.

The oil-injection lubrication system 100 further comprises a controller 7, and the controller 7 is electrically connected with the motor 521, the rotation speed sensor and the rotation angle sensor. Preferably, the motor 521 is a servo motor to improve the control accuracy.

The cam 522 is driven by the motor 521 to rotate so as to realize the periodic reciprocating sliding of the plunger 51; the rotating speed output by the motor 521 is measured in real time through a rotating speed sensor, and the oil inlet frequency in the oil injection cavity 11 and the oil injection frequency through the oil injection cavity 11 are controlled through the rotating speed control of the output shaft of the motor 521; the rotating angle of the output shaft of the motor 521 is measured in real time through the rotation angle sensor, so that the maximum sliding distance of the plunger 51 relative to the oil injection cavity 11 can be controlled, the oil pressure of high-pressure oil formed after lubricating oil in the oil injection cavity 11 is compressed is directly influenced, and the oil injection quantity of the lubricating oil in the oil injection cavity 11 injected to a device to be lubricated through the oil injection port 13 is directly influenced. By adopting the eccentric driving assembly, the flexible adjustment of the oil injection amount and the oil injection time interval under different working conditions can be realized.

In other embodiments, the eccentric driving assembly may also adopt a motor crank rocker structure.

Further, the above-mentioned oil-filling lubrication system 100 further includes an oil-feeding driving unit 22, where the oil-feeding driving unit 22 is used for driving the oil-feeding valve core 21 to move to selectively block or open the oil inlet 12; the oil feed drive unit 22 is an electromagnet. The oil inlet driving unit 22 is electrically connected with the controller 7 to intermittently supply power to the oil inlet driving unit 22, so that the time interval of each action of the oil inlet driving unit 22 is adjusted, the flexible adjustment of the oil inlet time interval under different working conditions is realized, and the use requirements are met. And the flexible adjustment of the injection quantity under different working conditions can be adjusted by controlling the action of the oil filling valve core 31 to adjust the communication strength of the oil filling opening 13 and the oil filling cavity 11.

Preferably, the oil inlet driving unit 22 is normally in a power-off state, so that the oil inlet 12 is communicated with the oil filling cavity 11; when the oil inlet driving unit 22 is powered on, the oil inlet 12 is blocked by the oil inlet valve core 21, and the oil inlet 12 is disconnected with the oil filling cavity 11.

Specifically, one end of the oil filling valve core 31 is disposed outside the valve body 1, and the other end of the oil inlet valve core 21 penetrates through the valve body 1 and is connected to the oil inlet driving unit 22. The outer wall of one end of the oil inlet valve core 21 at the oil inlet driving unit 22 is matched with the inner wall conical surface of the oil inlet 12 so as to improve the sealing effect and prevent the oil leakage problem between the matching surfaces of the oil inlet valve core 21 and the oil inlet 12 when the plunger 51 compresses the lubricating oil in the oil filling cavity 11; and the action of the oil inlet valve core 21 can be controlled to adjust the communication strength of the oil inlet 12 and the oil injection cavity 11, so that the flexible adjustment of the oil inlet amount under different working conditions can be adjusted.

In other embodiments, the oil inlet driving unit 22 is a piezoelectric structure, and how the piezoelectric structure controls the oil inlet valve core 21 is the prior art, which is not described herein in detail.

Further, the oil filling lubrication system 100 further comprises an oil filling driving unit 32 for driving the oil filling valve core 31 to move so as to selectively connect or disconnect the oil filling cavity 11 with the oil filling port 13; the oiling drive unit 32 is an electromagnet. The oil injection driving unit 32 is electrically connected with the controller 7 to intermittently supply power to the oil injection driving unit 32, so that the time interval of each action of the oil injection driving unit 32 is adjusted, the flexible adjustment of the oil injection time interval under different working conditions is realized, and the use requirement is met. Preferably, the oil filling driving unit 32 is normally in a power-off state, so that the oil filling port 13 is disconnected from the oil filling chamber 11; when the oil filling drive unit 32 is energized, the oil filling port 13 communicates with the oil filling chamber 11.

Specifically, a transition block 41 is arranged in the oil filling cavity 11, a main oil drainage hole 411 communicated with the oil filling cavity 11 and a transition oil hole 412 communicated with the oil filling port 13 are arranged on the transition block 41, and one end of the oil filling valve core 31 is inserted into the main oil drainage hole 411 and is in sliding connection with the main oil drainage hole 411, so that the main oil drainage hole 411 is selectively communicated with or disconnected from the transition oil hole 412.

Preferably, the main oil drainage hole 411 is a stepped hole, a limiting stepped surface 15 is formed on the inner wall of the stepped hole, the small-diameter hole of the stepped hole is communicated with the oil filling cavity 11, and one end of the oil filling valve core 31 extends into the large-diameter hole of the stepped hole and is slidably connected with the large-diameter hole. The transition oil hole 412 penetrates through a side wall of the large-diameter hole of the stepped hole and is opposite to the oil filling port 13. When the oil filling driving unit 32 loses power, the axial end face of the oil filling valve core 31 abuts against the limiting step face 15, and the circumferential side wall of the oil filling valve core 31 blocks the transition oil hole 412. When the oil injection driving unit 32 is powered on, the oil injection valve core 31 slides to the side far away from the small-diameter hole, so that the large-diameter hole is communicated with the transition oil hole 412, and the oil injection cavity 11 is communicated with the oil injection port 13 through the small-diameter hole, the large-diameter hole and the transition oil hole 412.

In other embodiments, the oil injection driving unit 32 is a piezoelectric structure, and how the piezoelectric structure controls the oil injection valve core 31 is the prior art, and the description thereof is omitted.

The oil injection lubricating system 100 provided by the embodiment can realize flexible adjustment of oil inlet amount, oil inlet time interval, oil injection amount and oil injection time interval under different conditions by controlling the actions of the plunger 51, the oil inlet valve core 21 and the oil injection valve core 31 so as to meet the use requirements of different working conditions.

The oil injection lubricating system 100 provided by the embodiment realizes modular design, is convenient to install and has a wide application range.

Further, a standby oil filling port 14 is arranged on the valve body 1, and the oil inlet 12, the standby oil filling port 14 and the oil filling port 13 are sequentially arranged along the axial direction of the valve body 1; the transition block 41 is axially slidable relative to the oil plenum 11 to selectively place the oil plenum 11 in communication with one and block off the other of the backup and fill ports 14 and 13. When the oil filling valve core 31 cannot act due to faults, the transition block 41 can be controlled to act to enable the spare oil filling opening 14 to be communicated with the oil filling cavity 11, so that lubricating oil is supplied to a device to be lubricated through the spare oil filling opening 14.

Specifically, the transition block 41 blocks the standby oil filling port 14 in a non-emergency state; in the emergency state, the transition block 41 is moved relative to the oil filling cavity 11 to open the spare oil filling port 14.

Further, the oil lubrication system 100 further comprises an emergency spring 42 for providing a force to the transition block 41 to slide axially relative to the oil cavity 11 to close off the spare oil filling port 14. Preferably, the emergency elastic member 42 is a spring. When the oil filling valve core 31 cannot move due to a fault, along with the continuous increase of the oil pressure in the oil filling cavity 11, the transition block 41 will move under the action of the oil pressure in the oil filling cavity 11 to communicate the oil filling cavity 11 with the standby oil filling port 14, so as to ensure that the oil filling and lubricating system 100 normally provides lubricating oil for a device to be lubricated.

Specifically, the inner wall of the oil injection cavity 11 is provided with a limiting step surface 15, one end of the emergency elastic piece 42 is fixed relative to the valve body 1, and the transition block 41 is clamped between the limiting step surface 15 and the other end of the emergency elastic piece 42. In a non-emergency state, the emergency elastic member 42 applies an acting force to the transition block 41, so that the transition block 41 abuts against the limit step surface 15; in the emergency state, the transition block 41 slides to the side of the emergency elastic member 42 by the oil pressure in the oil filling chamber 11 to communicate the standby oil filling port 14 with the oil filling chamber 11 and compress the emergency elastic member 42.

Through the above-mentioned emergent elastic component 42 and transition piece 41 cooperation action, though can not guarantee the precision of timing oiling and oiling volume, can effectively avoid taking place serious wearing and tearing trouble in the cylinder 6.

Further, in order to facilitate installation of the oil filling valve core 31 and the oil inlet valve core 21, the valve body 1 includes a first body and a second body, and the first body and the second body are in threaded sealing connection. In other embodiments, the first body and the second body may be connected by a paste, or a fastener and a sealing ring to seal the joint surface of the first body and the second body.

Example two

The difference between the present embodiment and the first embodiment is that the oil filling driving unit 32 in the first embodiment is replaced by an elastic restoring member, which is preferably a spring, one end of the spring is fixed relative to the valve body 1, and the other end of the spring presses the oil filling valve core 31 against the limit step surface 15.

When the oil pressure in the oil filling cavity 11 is increased to a certain degree, the transition block 41 compresses the elastic resetting piece under the action of the oil pressure in the oil filling cavity 11, so that the elastic resetting piece acts to communicate the oil filling cavity 11 with the oil filling opening 13; when the oil pressure in the oil filling cavity 11 is reduced to a certain degree, the elastic reset piece pushes the oil filling valve core 31 to act so as to disconnect the oil filling cavity 11 from the oil filling port 13.

It should be noted that the elastic coefficient of the elastic restoring member is smaller than that of the emergency elastic member 42, and in a normal condition, the emergency elastic member 42 fixes the transition block 41 relative to the valve body 1; when the oil pressure in the oiling chamber 11 increases to a certain level, if the oiling valve core 31 cannot operate due to a fault, the transition block 41 will operate to communicate the oiling chamber 11 with the spare oiling port 14 as the oil pressure in the oiling chamber 11 continues to increase.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims (10)

1. The utility model provides an oiling lubricating system, its characterized in that, including valve body (1) that is equipped with oiling cavity (11), be equipped with on valve body (1) with oiling mouth (13) and oil inlet (12) of oiling cavity (11) intercommunication, oiling lubricating system still includes:

the oil filling valve core (31) is arranged in the oil filling cavity (11) and can axially move relative to the oil filling cavity (11) so as to enable the oil filling cavity (11) to be selectively communicated with or disconnected from the oil filling port (13);

an oil inlet spool (21), the oil inlet spool (21) being movable relative to the oil filling chamber (11) to selectively connect or disconnect the oil filling chamber (11) from the oil inlet (12);

the plunger (51) is arranged in the oil injection chamber (11), the outer wall of the plunger (51) is in sealing connection with the inner wall of the oil injection chamber (11), and the plunger (51) can periodically slide axially and reciprocally relative to the oil injection chamber (11).

2. The oil-filled lubrication system according to claim 1, further comprising an eccentric drive assembly for driving the plunger (51) to axially reciprocate in sliding relation to the oil-filled chamber (11).

3. The oil-lubricated lubrication system according to claim 2, wherein the eccentric drive assembly comprises:

a cam (522), an outer peripheral wall of the cam (522) abutting against an axial end face of the plunger (51);

the output shaft of the motor (521) is in transmission connection with the cam (522);

a rotational speed sensor for measuring a rotational speed of an output shaft of the motor (521), and/or a rotational angle sensor for measuring a rotational angle of an output shaft of the motor (521).

4. The oiling lubrication system according to claim 1, further comprising an oil inlet driving unit (22), wherein the oil inlet driving unit (22) is used for driving the oil inlet valve core (21) to move to selectively block or open the oil inlet (12); the oil inlet driving unit (22) is of an electromagnet or piezoelectric structure.

5. The oil filling lubrication system according to claim 1, further comprising an oil filling driving unit (32) for driving the oil filling valve core (31) to move so as to selectively connect or disconnect the oil filling cavity (11) with the oil filling port (13); the oil injection driving unit (32) is of an electromagnet or piezoelectric structure.

6. The oil-filled lubrication system of claim 1, further comprising:

transition piece (41), transition piece (41) are located in oiling cavity (11), be equipped with on transition piece (41) with main draining hole (411) of oiling cavity (11) intercommunication, and with transition oilhole (412) that oiling mouth (13) communicate, the one end of oiling valve core (31) is inserted in main draining hole (411) and with main draining hole (411) sliding connection, so that main draining hole (411) selectively with transition oilhole (412) intercommunication or disconnection.

7. The oil injection lubricating system according to claim 6, characterized in that a spare oil injection port (14) is arranged on the valve body (1), and the oil inlet (12), the spare oil injection port (14) and the oil injection port (13) are arranged in sequence along the axial direction of the valve body (1); the transition block (41) is axially slidable relative to the oiling chamber (11) to selectively place the oiling chamber (11) in communication with one and close off the other of the backup oiling port (14) and the oiling port (13).

8. The oiling lubrication system according to claim 7, further comprising an emergency spring (42) for providing a force to the transition block (41) to slide it axially with respect to the oiling chamber (11) to block the backup oiling port (14).

9. The oil injection lubricating system according to claim 8, characterized in that the inner wall of the oil injection chamber (11) is provided with a limit step surface (15), one end of the emergency elastic member (42) is fixed relative to the valve body (1), and the transition block (41) is clamped between the limit step surface (15) and the other end of the emergency elastic member (42).

10. The oil-filled lubrication system according to any one of claims 1 to 9, wherein the outer wall of the oil-filled valve core (31) is in conical fit with the inner wall of the oil inlet (12).

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