CN213794263U

CN213794263U - Active unloading hydrostatic electric spindle

Info

Publication number: CN213794263U
Application number: CN202022670471.7U
Authority: CN
Inventors: 郑良钢; 陈铮; 孙奇
Original assignee: Jiangsu Lingchen Precision Machinery Co Ltd
Current assignee: Jiangsu Lingchen Precision Machinery Co Ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-07-27
Anticipated expiration: 2030-11-18

Abstract

The utility model belongs to the technical field of hydrostatic bearing, concretely relates to hydrostatic pressure electricity main shaft of initiative off-load, including the axle sleeve, the upper end fixedly connected with supporting leg of axle sleeve, the upper end fixedly connected with rose box of supporting leg, fixedly connected with supporting shoe on the inner wall of rose box, the upper end fixedly connected with filter screen of supporting shoe, fixedly connected with support on the inner wall of rose box, the inboard fixedly connected with bearing of support, the inside of bearing is rotated and is connected with the pivot, the upper end fixedly connected with flabellum of pivot. The utility model discloses an add in the inside of axle sleeve and establish relief valve, a pressure release section of thick bamboo and valve port isotructure for can release the inside pressure of axle sleeve through the relief valve after the inside pressure of axle sleeve risees, also can transport the inside of oil tank through returning oil pipe with the lubricating oil that releases in the release, thereby can guarantee the job stabilization of static pressure axle.

Description

Active unloading hydrostatic electric spindle

Technical Field

The utility model relates to a hydrostatic bearing technical field specifically is a hydrostatic electric main shaft of initiative off-load.

Background

The hydrostatic bearing means: the sliding bearing is supplied with pressure oil from the outside, and a static pressure bearing oil film is established in the bearing to realize liquid lubrication. The hydrostatic bearing works under the liquid lubrication all the time from the start to the stop, so the hydrostatic bearing has no abrasion, long service life and small start power and can be applied at an extremely low (even zero) speed. In addition, the bearing has the advantages of high rotation precision, high oil film rigidity, capability of inhibiting oil film oscillation and the like, but a special oil tank is required to supply pressure oil, and the power consumption is large at high speed.

When the liquid static pressure main shaft in the prior art is used, the main shaft is jacked up by the pressure of the lubricating oil inside, when the pressure borne by the main shaft is too small, the pressure inside the shaft sleeve is too large, the main shaft can be caused to swing in rotation, the machining quality is influenced, when oil is supplied to the inside of the shaft sleeve, the lubricating oil can bring impurities inside an oil inlet pipeline into the inside of the shaft sleeve, the surface precision of the main shaft can be influenced during rotation, and therefore the machining quality is influenced. Accordingly, there is a need for improvements in the art.

Disclosure of Invention

An object of the utility model is to provide a hydrostatic pressure electricity main shaft of initiative off-load has solved the inside problem of axle sleeve that too big and the inside impurity of oil feed pipe got into easily of axle sleeve internal pressure.

In order to achieve the above object, the utility model provides a following technical scheme: a hydrostatic pressure electric spindle capable of actively unloading comprises a spindle sleeve, wherein the upper end of the spindle sleeve is fixedly connected with a supporting leg, the upper end of the supporting leg is fixedly connected with a filter box, the inner wall of the filter box is fixedly connected with a supporting block, the upper end of the supporting block is fixedly connected with a filter screen, the inner wall of the filter box is fixedly connected with a support, the inner side of the support is fixedly connected with a bearing, the inner part of the bearing is rotatably connected with a rotating shaft, the upper end of the rotating shaft is fixedly connected with a fan blade, the outer side of the lower end of the rotating shaft is fixedly connected with a scraper blade, the lower end of the scraper blade is slidably connected with the upper end of the filter screen, the inner part of the lower end of the filter box is fixedly sleeved with a first sealing sleeve, the inner part of the first sealing sleeve is fixedly connected with a flow dividing pipe, the inner part of the left end of the spindle sleeve is fixedly sleeved with a pressure relief valve, the pressure relief device comprises a pressure relief cylinder, a valve port, a sealing plug, a spring, a sealing ring and a static pressure shaft, wherein the valve port is fixedly connected inside the pressure relief cylinder, the sealing plug is slidably connected inside the pressure relief cylinder, the right end of the sealing plug is in contact connection with the left end of the valve port, the spring is fixedly connected to the left end of the sealing plug, the sealing ring is fixedly connected inside the shaft sleeve, and the static pressure shaft is rotatably connected inside the sealing ring.

Preferably, the upper end of the filter box is connected with a box cover through threads, a second sealing sleeve is fixedly sleeved inside the box cover, and an oil inlet pipe is fixedly connected inside the second sealing sleeve.

Preferably, the inside fixed cover of axle sleeve has been connected with defeated oil pipe, the lower extreme fixedly connected with hydraulic fluid port of defeated oil pipe, defeated oil pipe's the other end with shunt tubes fixed connection.

Preferably, the outer side of the left end of the pressure relief cylinder is connected with a valve cover through threads, and the right end of the valve cover is fixedly connected with the left end of the spring.

Preferably, the outer side of the left end of the pressure release valve is connected with a connecting sleeve through a thread, and the left end of the connecting sleeve is fixedly connected with an oil return pipe.

Preferably, the pressure relief cylinder is provided with a plurality of through holes, and the through holes are uniformly distributed on the pressure relief cylinder.

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

1. the utility model discloses an add in the inside of axle sleeve and establish relief valve, a pressure release section of thick bamboo and valve port isotructure for can release the inside pressure of axle sleeve through the relief valve after the inside pressure of axle sleeve risees, also can transport the inside of oil tank through returning oil pipe with the lubricating oil that releases in the release, thereby can guarantee the job stabilization of static pressure axle.

2. The utility model discloses an add in the upper end of axle sleeve and establish rose box, filter screen and shunt tubes isotructure, will advance the lubricating oil that the oil pipe transportation comes and filter once more to can guarantee that the lubricating oil that enters into the inside of axle sleeve can not contain a large amount of impurity, thereby can guarantee the job stabilization of hydrostatic pressure axle.

Drawings

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

fig. 2 is a cross-sectional view of the pressure relief valve of fig. 1 of the present invention;

fig. 3 is a cross-sectional view of the filter box of fig. 1 of the present invention;

fig. 4 is an enlarged view of the a-portion structure of fig. 3 according to the present invention.

In the figure: 1. a shaft sleeve; 2. supporting legs; 3. a filter box; 4. a support block; 5. a filter screen; 6. a support; 7. a bearing; 8. a rotating shaft; 9. a fan blade; 10. a squeegee; 11. a box cover; 12. a second sealing sleeve; 13. an oil inlet pipe; 14. a first sealing sleeve; 15. a shunt tube; 16. an oil delivery pipe; 17. an oil port; 18. a pressure relief valve; 19. a pressure relief cylinder; 20. a valve port; 21. a sealing plug; 22. a spring; 23. a valve cover; 24. a through hole; 25. a seal ring; 26. a hydrostatic shaft; 27. connecting sleeves; 28. an oil return pipe.

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.

Examples

Referring to fig. 1-4, an active unloading hydrostatic electric spindle comprises a shaft sleeve 1, a supporting leg 2 is fixedly connected to the upper end of the shaft sleeve 1, a filter box 3 is fixedly connected to the upper end of the supporting leg 2, a supporting block 4 is fixedly connected to the inner wall of the filter box 3, a filter screen 5 is fixedly connected to the upper end of the supporting block 4, a bracket 6 is fixedly connected to the inner wall of the filter box 3, a bearing 7 is fixedly connected to the inner side of the bracket 6, a rotating shaft 8 is rotatably connected to the inner side of the bearing 7, a fan blade 9 is fixedly connected to the upper end of the rotating shaft 8, a scraper 10 is fixedly connected to the outer side of the lower end of the rotating shaft 8, the lower end of the scraper 10 is slidably connected to the upper end of the filter screen 5, a sealing sleeve 14 is fixedly sleeved to the inner side of the lower end of the filter box 3, a shunt tube 15 is fixedly connected to the inner side of the sealing sleeve 14, a pressure release valve 18 is fixedly sleeved to the inner side of the shaft sleeve 1, a pressure release tube 19 is fixedly connected to the inner side of the pressure release valve 18, the inside fixedly connected with valve port 20 of pressure release section of thick bamboo 19, the inside sliding connection of pressure release section of thick bamboo 19 has sealing plug 21, and the right-hand member of sealing plug 21 contacts with the left end of valve port 20 and is connected, and the left end fixedly connected with spring 22 of sealing plug 21, the inside fixedly connected with sealing washer 25 of axle sleeve 1, the inside rotation of sealing washer 25 is connected with static pressure axle 26.

Referring to fig. 3, the upper end of the filter box 3 is connected to a box cover 11 through a screw thread, a second sealing sleeve 12 is fixedly sleeved inside the box cover 11, an oil inlet pipe 13 is fixedly connected inside the second sealing sleeve 12, and the oil inlet pipe 13 is used for adding oil to the inside of the filter box 3.

Referring to fig. 1, an oil delivery pipe 16 is fixedly sleeved inside a shaft sleeve 1, an oil port 17 is fixedly connected to the lower end of the oil delivery pipe 16, the other end of the oil delivery pipe 16 is fixedly connected to a shunt pipe 15, and the shunt pipe 15 can uniformly supply lubricating oil to a plurality of oil delivery pipes 16.

Referring to fig. 2, a valve cover 23 is connected to the outer side of the left end of the pressure relief cylinder 19 through a screw thread, the right end of the valve cover 23 is fixedly connected to the left end of the spring 22, and the valve cover 23 can prevent lubricating oil from entering the pressure relief cylinder to corrode the spring 22.

Referring to fig. 1, a connecting sleeve 27 is connected to the outer side of the left end of the pressure relief valve 18 through a thread, an oil return pipe 28 is fixedly connected to the left end of the connecting sleeve 27, and the oil return pipe 28 is connected to the oil tank, so that the lubricating oil discharged from the pressure relief valve 18 can be conveyed to the inside of the oil tank for reuse.

Referring to fig. 2, the pressure relief cylinder 19 is provided with a plurality of through holes 24, the plurality of through holes 24 are uniformly distributed on the pressure relief cylinder 19, and the through holes 24 are used for discharging the lubricating oil inside the pressure relief cylinder 19.

The utility model discloses the concrete implementation process as follows: when in use, the lubricating oil is sprayed into the interior of the filter box 3 from the interior of the oil inlet pipe 13, enters the bottom of the filter box 3 after being filtered by the filter screen 5, the lubricating oil is extruded into the shunt tube 15 by pressure, is transported into the shaft sleeve 1 by the oil pipeline 16 and the oil port 17 after being shunted by the shunt tube 15, the lubricating oil drives the fan blades 9 to be selectively installed while the lubricating oil is sprayed, the fan blades 9 drive the scraper 10 to be selectively installed through the rotating shaft 8 while rotating, thereby ensuring that the filter screen 5 is not blocked, when the pressure inside the shaft sleeve 1 is overlarge, the lubricating oil jacks up the sealing plug 21 to the inside of the pressure relief pipe 19, so that the lubricating oil can enter the interior of the relief valve 18 through the valve port 20 and the through hole 24, and flows from the inside of the relief valve 18 to the inside of the oil return pipe 28, so that the pressure inside the boss 1 can be ensured to be stable.

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

1. The utility model provides an active off-load's hydrostatic pressure electricity main shaft, includes axle sleeve (1), its characterized in that: the improved filtering device is characterized in that the upper end of the shaft sleeve (1) is fixedly connected with a supporting leg (2), the upper end of the supporting leg (2) is fixedly connected with a filtering box (3), the inner wall of the filtering box (3) is fixedly connected with a supporting block (4), the upper end of the supporting block (4) is fixedly connected with a filtering net (5), the inner wall of the filtering box (3) is fixedly connected with a bracket (6), the inner side of the bracket (6) is fixedly connected with a bearing (7), the inside of the bearing (7) is rotatably connected with a rotating shaft (8), the upper end of the rotating shaft (8) is fixedly connected with a fan blade (9), the outer side of the lower end of the rotating shaft (8) is fixedly connected with a scraper (10), the lower end of the scraper (10) is slidably connected with the upper end of the filtering net (5), the inside of the lower end of the filtering box (3) is fixedly sleeved with a sealing sleeve I (14), and the inside of the sealing sleeve I (14) is fixedly connected with a shunt tube (15), the fixed cover in inside of the left end of axle sleeve (1) has been connected with relief valve (18), the inside fixedly connected with pressure release section of thick bamboo (19) of relief valve (18), the inside fixedly connected with valve port (20) of pressure release section of thick bamboo (19), the inside sliding connection of pressure release section of thick bamboo (19) has sealing plug (21), the right-hand member of sealing plug (21) with the left end of valve port (20) contacts and is connected, the left end fixedly connected with spring (22) of sealing plug (21), the inside fixedly connected with sealing washer (25) of axle sleeve (1), the inside rotation of sealing washer (25) is connected with hydrostatic pressure axle (26).

2. An actively unloading hydrostatic electric spindle according to claim 1, wherein: the upper end of the filter box (3) is connected with a box cover (11) through threads, a second sealing sleeve (12) is fixedly sleeved inside the box cover (11), and an oil inlet pipe (13) is fixedly connected inside the second sealing sleeve (12).

3. An actively unloading hydrostatic electric spindle according to claim 1, wherein: the oil delivery pipe (16) is fixedly sleeved in the shaft sleeve (1), an oil port (17) is fixedly connected to the lower end of the oil delivery pipe (16), and the other end of the oil delivery pipe (16) is fixedly connected with the flow dividing pipe (15).

4. An actively unloading hydrostatic electric spindle according to claim 1, wherein: the outer side of the left end of the pressure relief cylinder (19) is connected with a valve cover (23) through threads, and the right end of the valve cover (23) is fixedly connected with the left end of the spring (22).

5. An actively unloading hydrostatic electric spindle according to claim 1, wherein: the outer side of the left end of the pressure release valve (18) is connected with a connecting sleeve (27) through threads, and the left end of the connecting sleeve (27) is fixedly connected with an oil return pipe (28).

6. An actively unloading hydrostatic electric spindle according to claim 1, wherein: the pressure relief cylinder (19) is provided with a plurality of through holes (24), and the through holes (24) are uniformly distributed on the pressure relief cylinder (19).