CN217784821U - Grease lubricating pump assembly of wind generating set - Google Patents

Abstract

The utility model discloses a wind generating set grease lubricant pump assembly, including motor element, grease chamber and grease bucket, the motor element includes lubricant pump base and motor, the motor is connected with the eccentric wheel, the grease chamber is equipped with the pump core, the pump core includes pump core shell, plunger and check valve core, the pump core shell comprises head, threaded connection portion and afterbody, the pump core shell is equipped with logical chamber, and is equipped with the plunger, the plunger is equipped with spring holder, reset spring, is equipped with the opening, the pump core shell is equipped with check valve core, set nut in the logical chamber, the check valve spring is equipped with between check valve core and set nut; the plunger is tightly attached to the outer wall of the eccentric wheel, and the bottom of the grease barrel is communicated with the grease cavity. Has the advantages that: the reset spring can ensure that the plunger is always tightly attached to the eccentric wheel, the feeding stability is ensured, the spring on the pressure plate can ensure that the servo disc fully presses the grease into the through cavity on the left side of the one-way valve element, and the one-way valve spring can ensure that the one-way valve element is timely and reliably closed, so that the grease conveying stability of the whole structure is high.

Description

Grease lubricating pump assembly of wind generating set

Technical Field

The utility model belongs to the technical field of wind power generation, concretely relates to wind generating set grease lubricant pump assembly.

Background

At present, in the field of wind power generation, a bearing is dispersed and inconvenient to maintain, and faults caused by poor lubrication often occur in use.

Because the wind turbine generator system has a severe operating environment, lubricating grease needs to be conveyed to each lubricating point through a centralized lubricating system, and insufficient oil pushing is easily caused by insufficient piston pushing or insufficient internal pressure during grease conveying, so that the design of the wind turbine generator system grease lubricating pump assembly which meets the requirements of complex load working conditions and has high reliability is necessary.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wind generating set grease lubricant pump assembly to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a grease lubricating pump assembly of a wind generating set comprises a motor unit, a grease cavity and a grease barrel, wherein the grease cavity is clamped between the motor unit and the grease barrel, the motor unit comprises a lubricating pump base and a motor positioned in the lubricating pump base, the connecting part of the motor and the lubricating pump base is sealed by a framework, the motor output shaft penetrates through the grease cavity, an eccentric wheel is connected to the motor output shaft in a key mode, and the eccentric wheel is positioned in the grease cavity; the pump core is installed on one side of the grease cavity in a threaded mode and comprises a pump core shell, a plunger and a one-way valve core, the pump core shell consists of a small-diameter head portion, a middle threaded connection portion and a large-diameter tail portion, a through cavity is formed in the pump core shell along the axial lead, the plunger is installed in the through cavity in the head portion, a spring seat is installed at the head end of the outer portion of the plunger, a reset spring located between the spring seat and the tail portion of the pump core shell is sleeved on the head portion of the pump core shell, a through hole penetrating through the through cavity is formed in the head portion of the pump core shell, the diameter of the through cavity in the tail portion of the pump core shell is larger than that of the threaded connection portion, the one-way valve core sealing the through cavity is installed on the tail portion of the pump core shell, a positioning nut is installed in the through cavity in the tail portion of the pump core shell, an oil outlet is formed in the positioning nut, and a one-way valve spring is installed between the one-way valve core and the positioning nut; the plunger is tightly attached to the outer wall of the eccentric wheel, and the bottom of the grease barrel is communicated with the grease cavity.

Preferably, the lubricating pump base is formed by aluminum die casting.

Preferably, the joint of the motor output shaft and the lubricating pump base is sealed by a framework.

Preferably, the eccentric wheel is made of hard wear-resistant alloy, and the outer surface of the eccentric wheel is plated with a wear-resistant coating.

Preferably, an oil inlet is formed in the top end of the grease barrel, the oil inlet is connected with a guide pipe extending into the bottom end of the grease barrel, a follow-up disc capable of sliding up and down is arranged in the grease barrel, a sealing linear bearing is arranged at the joint of the follow-up disc and the guide pipe, and a spring is arranged between the follow-up disc and the top cover of the grease barrel.

Preferably, the grease barrel is a PC pipe, and the upper end cover and the lower end cover of the grease barrel are fixed by six pull rods.

Preferably, the check valve core is provided with a guide post and sleeved with a check valve spring seat, the check valve spring seat and the positioning nut are both provided with grooves, and the check valve spring is arranged in the grooves of the check valve spring seat and the positioning nut.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through the rotation that sets up the eccentric wheel to thereby can guarantee through setting up reset spring that the plunger hugs closely the eccentric wheel all the time, guarantee the stability of feeding, can guarantee through setting up the spring that the follower plate fully impresses the grease through the opening in one-way valve core left side through the chamber, and see off through the plunger ration, can guarantee through setting up the check valve spring that one-way valve core is timely reliable closed, thereby the grease is carried to entire structure is stable, is applicable to complicated load operating mode, and the reliability is high.

Drawings

FIG. 1 is a schematic sectional view of the front view of the present invention;

FIG. 2 is a schematic view of the appearance structure of the present invention;

FIG. 3 is a schematic cross-sectional view of the pump core of the present invention;

FIG. 4 is a schematic view of the pump core according to the present invention;

fig. 5 is a schematic diagram of the structure of the pump core viewed from the right.

In the figure: 1. a grease cavity; 2. a grease barrel; 3. lubricating the pump base; 4. a motor; 5. an eccentric wheel; 6. a pump core; 7. a pump core housing; 8. a plunger; 9. a spring seat; 10. a return spring; 11. a port; 12. a one-way valve core; 13. positioning a nut; 14. a check valve spring; 15. an oil inlet; 16. a conduit; 17. a follower disk; 18. a spring; 19. a pull rod; 20. a check valve spring seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1: referring to fig. 1-5, the present invention provides a technical solution: a grease lubricating pump assembly of a wind generating set comprises a motor unit, a grease cavity 1 and a grease barrel 2, wherein the grease cavity 1 is clamped between the motor unit and the grease barrel 2, the motor unit comprises a lubricating pump base 3 and a motor 4 positioned in the lubricating pump base 3, the connecting part of the motor 4 and the lubricating pump base 3 is sealed by a framework, an output shaft of the motor 4 penetrates through the grease cavity 1, an eccentric wheel 5 is connected to the output shaft of the motor 4 through a key, and the eccentric wheel 5 is positioned in the grease cavity 1; a pump core 6 is installed on one side of the grease cavity 1 through threads, the pump core 6 comprises a pump core shell 7, a plunger 8 and a one-way valve core 12, the pump core shell 7 consists of a small-diameter head part, a middle threaded connection part and a large-diameter tail part, a through cavity is formed in the pump core shell 7 along the axial line, the plunger 8 is installed in the through cavity of the head part, a spring seat 9 is installed at the outer head end of the plunger 8, a return spring 10 located between the spring seat 9 and the tail part of the pump core shell 7 is sleeved at the head part of the pump core shell 7, a through hole 11 penetrating through the through cavity is formed in the head part of the pump core shell 7, the diameter of the through cavity at the tail part of the pump core shell 7 is larger than that of the threaded connection part, the one-way valve core 12 for sealing the through cavity is installed, a positioning nut 13 is installed in the through cavity at the tail part of the pump core shell 7, an oil outlet is formed in the positioning nut 13, and a one-way valve spring 14 is installed between the one-way valve core 12 and the positioning nut 13; the plunger 8 is tightly attached to the outer wall of the eccentric wheel 5, and the bottom of the grease barrel 2 is communicated with the grease cavity 1; when a rated power supply is connected, an output shaft of a motor 4 in a lubricating pump base 3 rotates to drive an eccentric wheel 5 to rotate, a plunger 8 in contact with the eccentric wheel 5 is driven to reciprocate under the action of a return spring 10, when the plunger 8 reaches the leftmost end, a through hole 11 is stopped to be blocked, a low-pressure area is formed in a cavity on the left side of a one-way valve element 12, grease enters the cavity on the left side of the one-way valve element 12 through the through hole 11, then when the plunger 8 moves to the rightmost end, the grease in the cavity on the left side of the one-way valve element 12 is pressed rightwards, so that the one-way valve element 12 is pushed rightwards, the grease enters between the one-way valve element 12 and a positioning nut 13, is pressurized and output to an outlet of the positioning nut 13 and enters a lubricating point through an external pipeline; when the plunger 8 moves leftwards again, the one-way valve spring 14 pushes back the one-way valve core 12, and the circulation is carried out by the same principle, so that the continuous and stable grease conveying is realized.

Specifically, the lubricating pump base 3 is formed by aluminum die casting; in this embodiment, the heat dissipation is also facilitated while high structural strength is ensured.

Specifically, the joint of the output shaft of the motor 4 and the lubricating pump base 3 is sealed by a framework; in this embodiment, the joint between the motor unit and the grease chamber 1 can thus be sealed to prevent oil from leaking to the motor unit.

Specifically, the eccentric wheel 5 is made of hard wear-resistant alloy, and the outer surface of the eccentric wheel is plated with a wear-resistant coating; in the present embodiment, the eccentric wheel 5 is thus durable and stable, and has high reliability.

Specifically, an oil inlet 15 is arranged at the top end of the grease barrel 2, the oil inlet 15 is connected with a guide pipe 16 extending into the inner bottom end of the grease barrel 2, a follower disk 17 capable of sliding up and down is arranged in the grease barrel 2, a sealing linear bearing is arranged at the joint of the follower disk 17 and the guide pipe 16, and a spring 18 is arranged between the follower disk 17 and the top cover of the grease barrel 2; in this embodiment, when the grease in the grease chamber 1 is discharged, the missing space is continuously replenished by the grease in the upper grease barrel 2 under the pressure of the spring 18 pressing the follower disk 17.

Specifically, the grease barrel 2 is a PC pipe, and the upper end cover and the lower end cover of the grease barrel 2 are fixed by six pull rods 19; in this embodiment, be convenient for make, increase structural strength through pull rod 19 on every side simultaneously, also be convenient for make the grease bucket 2 of different specifications according to different demands.

Specifically, the check valve core 12 is provided with a guide post and sleeved with a check valve spring seat 20, the check valve spring seat 20 and the positioning nut 13 are both provided with a groove, and the check valve spring 14 is arranged in the grooves of the check valve spring seat 20 and the positioning nut 13; in this embodiment, both ends of the check valve spring 14 are thus restrained from being tilted and deflected, and the expansion and contraction are stable.

For the convenience of understanding the technical solution of the present invention, the following detailed description is made on the working principle or the operation mode of the present invention in the practical process.

The working principle is as follows: when a rated power supply is connected, an output shaft of a motor 4 in a lubricating pump base 3 rotates to drive an eccentric wheel 5 to rotate, a plunger 8 in contact with the eccentric wheel 5 is driven to reciprocate under the action of a return spring 10, when the plunger 8 reaches the leftmost end, a through hole 11 is stopped to be blocked, a low-pressure area is formed in a cavity on the left side of a one-way valve element 12, grease enters the cavity on the left side of the one-way valve element 12 through the through hole 11, then when the plunger 8 moves to the rightmost end, the grease in the cavity on the left side of the one-way valve element 12 is pressed rightwards, so that the one-way valve element 12 is pushed rightwards, the grease enters between the one-way valve element 12 and a positioning nut 13, is pressurized and output to an outlet of the positioning nut 13 and enters a lubricating point through an external pipeline; when the plunger 8 moves leftwards again, the one-way valve spring 14 pushes back the one-way valve core 12, and circulation is carried out according to the same principle, so that continuous and stable grease conveying is realized; meanwhile, after the grease in the grease cavity 1 is discharged, the lacked space is continuously replenished by the grease in the upper grease barrel 2 under the pressure action of the follow-up disc 17 pressed by the spring 18.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The grease lubricating pump assembly of the wind generating set is characterized by comprising a motor unit, a grease cavity (1) and a grease barrel (2), wherein the grease cavity (1) is clamped between the motor unit and the grease barrel (2), the motor unit comprises a lubricating pump base (3) and a motor (4) positioned in the lubricating pump base (3), the connecting part of the motor (4) and the lubricating pump base (3) is sealed by a framework, the output shaft of the motor (4) penetrates through the grease cavity (1), the output shaft of the motor (4) is in key connection with an eccentric wheel (5), and the eccentric wheel (5) is positioned in the grease cavity (1); a pump core (6) is installed on one side of the grease cavity (1) in a threaded mode, the pump core (6) comprises a pump core shell (7), a plunger (8) and a one-way valve core (12), the pump core shell (7) is composed of a small-diameter head portion, a middle threaded connection portion and a large-diameter tail portion, a through cavity is formed in the pump core shell (7) along the axial line, the plunger (8) is installed in the head through cavity, a spring seat (9) is installed at the head end of the outer portion of the plunger (8), a reset spring (10) located between the spring seat (9) and the tail portion of the pump core shell (7) is sleeved on the head portion of the pump core shell (7), a through hole (11) penetrating through the through cavity is formed in the head portion of the pump core shell (7), the diameter of the through cavity in the tail portion of the pump core shell (7) is larger than that of the threaded connection portion, the one-way valve core (12) sealing the through cavity is installed on the one-way valve core (12), a positioning nut (13) is installed in the through cavity in the tail portion of the pump core shell (7), an oil outlet is arranged on the positioning nut (13), and a one-way valve (14) is installed between the one-way valve core (12); plunger (8) are hugged closely eccentric wheel (5) outer wall, grease bucket (2) bottom with grease chamber (1) intercommunication.

2. The grease lubrication pump assembly of the wind generating set according to claim 1, wherein the lubrication pump base (3) is formed by aluminum die casting.

3. The grease lubrication pump assembly of the wind generating set according to claim 1, wherein a skeleton seal is used at the connection of the output shaft of the motor (4) and the lubrication pump base (3).

4. The grease lubrication pump assembly of the wind generating set according to claim 1, wherein the eccentric wheel (5) is made of hard wear-resistant alloy, and the outer surface of the eccentric wheel is coated with a wear-resistant coating.

5. The grease lubrication pump assembly of the wind generating set according to claim 1, wherein an oil inlet (15) is formed in the top end of the grease barrel (2), the oil inlet (15) is connected with a guide pipe (16) extending into the inner bottom end of the grease barrel (2), a follower disk (17) capable of sliding up and down is installed in the grease barrel (2), a sealing linear bearing is installed at the joint of the follower disk (17) and the guide pipe (16), and a spring (18) is installed between the follower disk (17) and the top cover of the grease barrel (2).

6. The grease lubrication pump assembly of the wind generating set according to claim 1, wherein the grease barrel (2) is a PC pipe, and the upper and lower end covers of the grease barrel (2) are fixed by six pull rods (19).

7. The grease lubrication pump assembly of the wind generating set according to claim 1, wherein the check valve core (12) is provided with a guide post and sleeved with a check valve spring seat (20), the check valve spring seat (20) and the positioning nut (13) are both provided with grooves, and the check valve spring (14) is arranged in the grooves of the check valve spring seat (20) and the positioning nut (13).

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