CN215566953U

CN215566953U - Piston type hydraulic energy accumulator

Info

Publication number: CN215566953U
Application number: CN202121970907.2U
Authority: CN
Inventors: 吕鹏; 雷显义
Original assignee: Dalian Dayuan Hydraulic Complete Equipment Co ltd
Current assignee: Dalian Dayuan Hydraulic Complete Equipment Co ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2022-01-18
Anticipated expiration: 2031-08-20

Abstract

The utility model discloses a piston type hydraulic energy accumulator which comprises a piston block, wherein the inner side of a cylinder sleeve is connected with the piston block in a sliding manner, the upper side and the lower side of the piston block are respectively provided with a gas cavity and an oil pressing wall, the piston block is provided with a plurality of oil guide holes, the oil guide holes are distributed along the circumference of the piston block, the oil guide holes penetrate through the upper end face and the lower end face of the piston block, the upper end face and the lower end face of the piston block are respectively provided with an oiling mechanism and an anti-seepage mechanism, the inner side of the piston block is provided with an oil guide column, and the upper end and the lower end of the oil guide column are respectively connected with the oiling mechanism and the anti-seepage mechanism. When the piston block moves upwards, the upper oil ring moves upwards along with the piston block attached to the inner wall of the cylinder sleeve, so that the inner wall of the cylinder sleeve is lubricated first, the subsequent piston block slides smoothly, and when the piston block moves downwards, the seepage-stopping mechanism closes the oil guide hole under the extrusion action between the seepage-stopping mechanism and the lubricating oil, so that the lubricating oil in the oil pressing cavity can be prevented from being extruded and greatly extruded into the gas cavity through the oil guide hole.

Description

Piston type hydraulic energy accumulator

Technical Field

The utility model relates to the technical field of hydraulic systems, in particular to a piston type hydraulic energy accumulator.

Background

Piston accumulator is widely used in the hydraulic system of die casting machine, injection molding machine etc, generally include a cylinder body and a piston of setting in the cylinder body, this piston divides into two parts with the inner chamber of cylinder body, let in gas such as nitrogen gas in the cavity of piston top, utilize gaseous compression to carry out the energy storage, cavity below the piston then communicates and fills with other hydraulic means in the hydraulic system hydraulic oil, be provided with the intercommunication of sealing washer with separation piston top and below cavity between the lateral wall of piston and the inner wall of cylinder body, piston accumulator in use, the piston slides from top to bottom in the cylinder body with energy storage and energy release.

When the piston moves downwards, because the cavity below the piston is full of hydraulic oil, these hydraulic oil can form the oil film between the inner wall of cylinder body and the outer wall of piston, can play the lubrication action, but because piston accumulator is higher to the sealed requirement between piston and the cylinder body, the outer wall of piston is comparatively inseparable with the inner wall laminating of cylinder body, the piston moves down the back, hydraulic oil can not remain on the cylinder body inner wall of piston top, thus, when the piston rebound, the outer wall of piston and the inner wall of cylinder body are convenient for appear the dry friction, can send abnormal sound and noise, also can cause the wearing and tearing speed who accelerates the cylinder body, piston and sealing washer, reduce its life.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a piston type hydraulic energy accumulator.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a piston hydraulic pressure continues ability ware, includes that both ends are connected with the cylinder liner of last cylinder cap and lower cylinder cap respectively from top to bottom, go up the cylinder cap and be provided with exhaust hole and go out the liquid hole on the cylinder cap down respectively, the inboard sliding connection of cylinder liner has the piston piece, both sides are the gas chamber and press the oil wall respectively about the piston piece, be provided with a plurality of oil guide holes on the piston piece, and a plurality of oil guide holes distribute along the circumference of piston piece, oil guide hole runs through both ends face about the piston piece, both ends face is provided with oiling mechanism and ends the mechanism that oozes respectively about the piston piece, piston piece inboard stopper is equipped with oil guide post, and both ends link to each other with oiling mechanism and end the mechanism that oozes respectively about oil guide post.

Preferably, the mechanism that oils includes last oil ring and a plurality of oil guide block, last oil ring distributes along the outer circumference of piston block, and goes up oil ring and cylinder liner inner wall and laminate mutually, and a plurality of oil guide block are connected between oil guide column and last oil ring.

Preferably, the anti-seepage mechanism comprises a plurality of anti-seepage members, and the anti-seepage members are respectively connected with the oil guide columns.

Preferably, only ooze the component top-down and include fixed cover, movable sleeve and sealed briquetting in proper order, fixed cover is in piston block lower extreme fixed connection, fixed cover outside is located to the movable sleeve cover, sealed briquetting fixed connection is in the movable sleeve lower extreme, fixedly connected with compression spring between sealed briquetting and the piston block, and compression spring is located fixed cover inboard, be provided with first inlet port on the fixed cover, be provided with on the movable sleeve with first inlet port assorted second inlet port.

Preferably, the outer side of the oil guide column is wrapped with a reinforcing steel sleeve, and the reinforcing steel sleeve is fixedly connected with the inner wall of the oil guide hole.

Preferably, a reinforcing ring is fixedly connected to the upper end surface of the piston block.

Compared with the prior art, the utility model provides a piston type hydraulic energy accumulator which has the following beneficial effects:

1. through being provided with a plurality of oil holes of leading on the piston piece, set up the mechanism of oiling at the piston piece up end, establish the oil column of leading at the piston piece inside stopper, and lead about the oil column both ends link to each other with the mechanism of oiling and only oozing the mechanism respectively, when the piston piece up-wards move, press the inside lubricating oil of oil chamber to permeate a plurality of oil blocks of leading through leading the oil column, permeate to the oil ring by a plurality of oil blocks of leading again, it is along with piston piece laminating cylinder liner inner wall upward movement to go up the oil ring, thereby the ratio is lubricated cylinder liner inner wall earlier, make the piston piece that succeeds slide smoothly.

2. The lower end face of the piston block is provided with the seepage-stopping mechanism, so that when the piston block moves downwards, the piston block extrudes lubricating oil in the oil pressing cavity to an external hydraulic device, and at the moment, the seepage-stopping mechanism closes the oil guide hole under the extrusion action between the piston block and the lubricating oil, so that the lubricating oil in the oil pressing cavity can be prevented from being extruded and greatly extruded into the gas cavity through the oil guide hole.

3. Through setting up the stagnant component that oozes including fixed cover, the movable sleeve, compression spring and sealed briquetting, can be when piston piece upward movement, go up the oil ring along with piston piece laminating cylinder liner inner wall upward movement, thereby guide the cylinder liner inner wall to lubricate earlier, make the smooth slip of successor piston piece, when piston piece downward movement, the piston piece extrudees the lubricating oil in the pressure oil chamber to external hydraulic means, this moment end ooze the mechanism under the extrusion effect with between the lubricating oil, compression spring compression, the movable sleeve slides along fixed cover and makes the second oil inlet hole on the first oil inlet hole on the fixed cover stagger with the movable sleeve, closed oil guide hole, can prevent to press the lubricating oil of oil intracavity portion to receive the extrusion and extrude in the gas chamber in a large number through the oil guide hole.

4. Through leading the outside parcel of oil post and consolidating the steel bushing, and consolidate the steel bushing and lead oilhole inner wall fixed connection, consolidate the steel bushing and can play the reinforcement effect to the vacancy of leading oilhole department, prevent that the setting of leading the oilhole from causing piston piece atress to warp.

Drawings

Fig. 1 is a schematic structural view of the top of a piston type hydraulic energy accumulator in a cylinder sleeve cutting state, which is provided by the utility model;

FIG. 2 is a schematic structural view of the bottom of a piston type hydraulic energy accumulator in a cylinder sleeve cutting state, which is provided by the utility model;

fig. 3 is a schematic structural diagram of a piston hydraulic energy charger according to the present invention in a piston-cut state;

FIG. 4 is a schematic view of the structure at A in FIG. 3;

fig. 5 is a schematic structural diagram of two ends of a cylinder sleeve of the piston type hydraulic energy accumulator provided by the utility model.

In the figure: 1. a cylinder liner; 2. an upper cylinder cover; 3. a lower cylinder cover; 4. an exhaust hole; 5. a liquid outlet hole; 7. a piston block; 8. an oil guide hole; 9. an oil guide column; 10. fixing a sleeve; 11. a first oil inlet hole; 12. a movable sleeve; 13. a second oil inlet hole; 14. sealing and pressing the block; 15. a compression spring; 16. reinforcing the steel sleeve; 17. an oil guide block; 18. an oil feeding ring; 19. a reinforcing ring; 20. a permeation prevention member.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1

Referring to fig. 1-5, a piston type hydraulic energy accumulator comprises a cylinder sleeve 1, wherein the upper end and the lower end of the cylinder sleeve are respectively connected with an upper cylinder cover 2 and a lower cylinder cover 3, the upper cylinder cover 2 is provided with an exhaust hole 4 for communicating a gas cavity 21 with the outside, and the exhaust hole 4 is provided with a flow control valve; the lower cylinder cover 3 is provided with a liquid outlet 5 for communicating a hydraulic oil cavity 22 with the outside, the liquid outlet 5 is generally communicated with an outside hydraulic device, the pressure and the volume of gas in the gas cavity 21 can be flexibly controlled by utilizing a flow control valve on the exhaust hole 4, and further the energy storage can be flexibly controlled, the inner side of the cylinder sleeve 1 is slidably connected with a piston block 7, the upper side and the lower side of the piston block 7 are respectively provided with the gas cavity 21 and an oil pressing wall, the upper end surface of the piston block 7 is fixedly connected with a reinforcing ring 19, the piston block 7 is provided with a plurality of oil guide holes 8, the plurality of oil guide holes 8 are distributed along the circumference of the piston block 7, the oil guide holes 8 penetrate through the upper end surface and the lower end surface of the piston block 7, the upper end surface and the lower end surface of the piston block 7 are respectively provided with an oiling mechanism and an anti-seepage mechanism, the inner side of the piston block 7 is internally plugged with an oil guide column 9, the upper end and the lower end of the oil guide column 9 are respectively connected with the oiling mechanism and the anti-seepage mechanism, when the piston block 7 moves downwards, the piston block 7 extrudes the lubricating oil in the oil pressing cavity 22 to an external hydraulic device, and at the moment, the seepage-stopping mechanism closes the oil guide hole 8 under the extrusion action between the piston block and the lubricating oil, so that the lubricating oil in the oil pressing cavity 22 can be prevented from being extruded and extruded into the gas cavity 21 through the oil guide hole 8 in a large amount; when the piston block 7 moves upwards, the seepage-stopping mechanism is reset to be in an original state, at the moment, the lubricating oil in the oil pressing cavity 22 permeates into the oil guide blocks 17 through the oil guide columns 9 and then permeates into the upper oil ring 18 through the oil guide blocks 17, the upper oil ring 18 moves upwards along with the piston block 7 attached to the inner wall of the cylinder sleeve 1, and therefore the inner wall of the cylinder sleeve 1 is lubricated first, and the subsequent piston block 7 slides smoothly.

In the utility model, the oiling mechanism comprises an upper oil ring 18 and a plurality of oil guide blocks 17, wherein the upper oil ring 18 is distributed along the outer circumference of the piston block 7, the upper oil ring 18 is attached to the inner wall of the cylinder sleeve 1, and the plurality of oil guide blocks 17 are connected between the oil guide columns 9 and the upper oil ring 18; the seepage stopping mechanism comprises a plurality of seepage stopping components 20, the plurality of seepage stopping components 20 are respectively connected with a plurality of oil guide columns 9, the seepage stopping components 20 sequentially comprise a fixed sleeve 10 from top to bottom, a movable sleeve 12 and a sealing pressing block 14, the fixed sleeve 10 is fixedly connected with the lower end of a piston block 7, the movable sleeve 12 is sleeved on the outer side of the fixed sleeve 10, the sealing pressing block 14 is fixedly connected with the lower end of the movable sleeve 12, a compression spring 15 is fixedly connected between the sealing pressing block 14 and the piston block 7, the compression spring 15 is located on the inner side of the fixed sleeve 10, a first oil inlet hole 11 is formed in the fixed sleeve 10, and a second oil inlet hole 13 matched with the first oil inlet hole 11 is formed in the movable sleeve 12.

Specifically, the method comprises the following steps:

when the piston block 7 moves downwards, the piston block 7 extrudes the lubricating oil in the oil pressing cavity 22 to an external hydraulic device, at the moment, the permeation-stopping member 20 is compressed by the compression spring 15 under the extrusion action with the lubricating oil, the movable sleeve 12 slides along the fixed sleeve 10 to enable the first oil inlet hole 11 on the fixed sleeve 10 to be staggered with the second oil inlet hole 13 on the movable sleeve 12, and at the moment, the lubricating oil in the oil pressing cavity 22 can be prevented from being extruded and extruded into the gas cavity 21 through the oil guide hole 8 in a large amount;

When the piston block 7 moves upwards, the seepage-stopping component 20 is reset to be in an original state, namely the first oil inlet hole 11 on the fixed sleeve 10 coincides with the second oil inlet hole 13 on the movable sleeve 12, at the moment, the lubricating oil in the oil pressing cavity 22 permeates into the oil guiding blocks 17 through the oil guiding columns 9 and then permeates into the upper oil ring 18 through the oil guiding blocks 17, and the upper oil ring 18 moves upwards along with the attachment of the piston block 7 to the inner wall of the cylinder sleeve 1, so that the inner wall of the cylinder sleeve 1 is lubricated first, and the subsequent piston block 7 slides smoothly.

Wherein, lead the outside parcel of oil column 9 and have reinforced steel bushing 16, and reinforced steel bushing 16 and lead 8 inner walls fixed connection of oilhole, reinforced steel bushing 16 can play the reinforcement effect to the vacancy of leading oilhole 8 department, prevents to lead the setting of oilhole 8 to cause piston block 7 atress to warp.

The working principle is as follows: when the piston block 7 moves downwards, the piston block 7 extrudes the lubricating oil in the oil pressing cavity 22 to an external hydraulic device, at the moment, the permeation-stopping member 20 is compressed by the compression spring 15 under the extrusion action with the lubricating oil, the movable sleeve 12 slides along the fixed sleeve 10 to enable the first oil inlet hole 11 on the fixed sleeve 10 to be staggered with the second oil inlet hole 13 on the movable sleeve 12, and at the moment, the lubricating oil in the oil pressing cavity 22 can be prevented from being extruded and extruded into the gas cavity 21 through the oil guide hole 8 in a large amount; when the piston block 7 moves upwards, the seepage-stopping member 20 is reset to be in an original state, namely the first oil inlet hole 11 on the fixed sleeve 10 coincides with the second oil inlet hole 13 on the movable sleeve 12, at the moment, the lubricating oil in the oil pressing cavity 22 permeates into the oil guide blocks 17 through the oil guide columns 9 and then permeates into the upper oil ring 18 through the oil guide blocks 17, and the upper oil ring 18 moves upwards along with the attachment of the piston block 7 to the inner wall of the cylinder sleeve 1, so that the inner wall of the cylinder sleeve 1 is lubricated first, and the subsequent piston block 7 slides smoothly.

It should be further noted that the electrical control method used in this document is automatically controlled by a controller and powered by an external power source, and the control circuit of the controller can be implemented by simple programming by those skilled in the art, which belongs to the common knowledge in the art, and this application mainly serves to protect the mechanical device, so the control method and the circuit connection are not explained in detail in this application.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. A piston type hydraulic energy accumulator comprises a cylinder sleeve (1) of which the upper end and the lower end are respectively connected with an upper cylinder cover (2) and a lower cylinder cover (3), the upper cylinder cover (2) and the lower cylinder cover (3) are respectively provided with an exhaust hole (4) and a liquid outlet hole (5), a piston block (7) is connected to the inner side of the cylinder sleeve (1) in a sliding manner, a gas cavity (21) and a pressure oil wall are respectively arranged at the upper side and the lower side of the piston block (7), it is characterized in that the piston block (7) is provided with a plurality of oil guide holes (8), a plurality of oil guide holes (8) are distributed along the circumference of the piston block (7), the oil guide holes (8) penetrate through the upper end surface and the lower end surface of the piston block (7), the upper end surface and the lower end surface of the piston block (7) are respectively provided with an oiling mechanism and a seepage-stopping mechanism, and an oil guide column (9) is arranged on the inner side of the piston block (7) in a plugged manner, and the upper end and the lower end of the oil guide column (9) are respectively connected with the oiling mechanism and the seepage-stopping mechanism.

2. A piston type hydraulic energy charger as claimed in claim 1, characterized in that said oil applying mechanism comprises an oil applying ring (18) and a plurality of oil guiding blocks (17), said oil applying ring (18) is distributed along the outer circumference of the piston block (7), and the oil applying ring (18) is attached to the inner wall of the cylinder liner (1), and the plurality of oil guiding blocks (17) are connected between the oil guiding column (9) and the oil guiding ring (18).

3. A piston hydraulic charge as claimed in claim 2, characterized in that said anti-leak means comprise a plurality of anti-leak members (20), and a plurality of anti-leak members (20) are respectively connected to a plurality of oil guiding columns (9).

4. A piston type hydraulic energy charging device as claimed in claim 3, wherein the anti-seepage member (20) comprises a fixed sleeve (10), a movable sleeve (12) and a sealing pressing block (14) in sequence from top to bottom, the fixed sleeve (10) is fixedly connected with the lower end of the piston block (7), the movable sleeve (12) is sleeved outside the fixed sleeve (10), the sealing pressing block (14) is fixedly connected with the lower end of the movable sleeve (12), a compression spring (15) is fixedly connected between the sealing pressing block (14) and the piston block (7), the compression spring (15) is located inside the fixed sleeve (10), the fixed sleeve (10) is provided with a first oil inlet (11), and the movable sleeve (12) is provided with a second oil inlet (13) matched with the first oil inlet (11).

5. A piston type hydraulic energy accumulator as claimed in claim 4, characterized in that the outer side of the oil guide column (9) is wrapped with a reinforcing steel sleeve (16), and the reinforcing steel sleeve (16) is fixedly connected with the inner wall of the oil guide hole (8).

6. A piston hydraulic charger as claimed in any one of claims 1-5, characterized in that a reinforcement ring (19) is fixedly connected to the upper end surface of the piston block (7).