CN211423058U

CN211423058U - Large-diameter hydraulic cylinder

Info

Publication number: CN211423058U
Application number: CN201922029822.3U
Authority: CN
Inventors: 李钢; 鲁海石; 陈素娟; 宛锐
Original assignee: FUSHUN TIANBAO HEAVY INDUSTRY HYDRAULIC MANUFACTURING CO LTD
Current assignee: FUSHUN TIANBAO HEAVY INDUSTRY HYDRAULIC MANUFACTURING CO LTD
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-09-04
Anticipated expiration: 2029-11-22

Abstract

The utility model discloses a large-diameter hydraulic cylinder, which comprises a cylinder body, wherein one end of the cylinder body is provided with a cylinder cover, a piston rod is arranged in the cylinder body, one end of the piston rod penetrates through the cylinder cover and is fixedly provided with an earring, and the surface of the cylinder cover is sleeved with a dust removal external member; the utility model discloses in, adopt the dust removal external member, the annular chamber, the scraping ring, dust collection chamber and through-hole constitute piston rod dust removal mechanism, through cup jointing the dust removal external member on the cylinder cap of cylinder body, make in the dust removal external member inner circle two scraping rings and the surperficial butt of piston rod of slope in opposite directions, when the piston rod is flexible, two scraping rings of slope in opposite directions can scrape the dust and the cylinder oil on piston rod surface to the collection dirt intracavity between two scraping rings, and then in the leading-in annular chamber of through-hole through dust collection intracavity side, effectively avoid the dust on piston rod surface and cylinder oil adhesion and send out the sticky condition more, reduce the flexible retardation of piston rod, thereby guarantee the smoothness degree of piston rod at flexible in-process.

Description

Large-diameter hydraulic cylinder

Technical Field

The utility model relates to a pneumatic cylinder technical field especially relates to a heavy-calibre pneumatic cylinder.

Background

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems.

The piston rod of the existing hydraulic cylinder is often exposed to the outside during reciprocating motion in the using process of the existing hydraulic cylinder, so that external dust is bonded with oil stains on the surface of the piston rod, and in the past, the piston rod and a cylinder cover are made to form black viscous liquid, so that the reciprocating motion smoothness of the piston rod is influenced, and the use of the hydraulic cylinder is influenced.

Therefore, a large-diameter hydraulic cylinder is provided to solve the above disadvantages.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a large-caliber hydraulic cylinder.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a heavy-calibre pneumatic cylinder, includes the cylinder body, the one end of cylinder body is provided with the cylinder cap, and the internally mounted of cylinder body has the piston rod, the one end of piston rod runs through cylinder cap fixed mounting and has the earrings, the dust removal external member has been cup jointed on the surface of cylinder cap, and the inner circle of dust removal external member is provided with two scraping rings, two scraping rings all with the surface butt of piston rod, and constitute the dust collection chamber between two scraping rings, the through-hole has been seted up to dust collection intracavity side, the annular chamber has been seted up to dust removal external member side surface, the through-hole in dust collection chamber link up dust removal external member and annular chamber intercommunication.

As a further description of the above technical solution: the outer surrounding ring of cylinder cap overlaps and is connected with the snap ring, and the snap ring is formed by two semi-ring combinations, two the semi-ring internal surface all welds arc and projection, and the arc of two semi-rings constitutes and keeps off the ring to the internal surface of two semi-rings all encircles the welding and has been connected with a plurality of projections, the projection is with the draw-in groove one-to-one of dust removal external member.

As a further description of the above technical solution: the two scraping rings of the dust removal external member incline in opposite directions, a plurality of through holes are annularly formed in the dust collection cavity between the two scraping rings, and the through holes are communicated with the annular cavity through the dust removal external member.

As a further description of the above technical solution: the inboard fender ring of snap ring and the surperficial butt of cylinder body, and the both ends of snap ring all weld the engaging lug, and the surface of engaging lug sets up threaded hole.

As a further description of the above technical solution: the cross-section of through-hole is L type structure, and the one end of through-hole is located the collection dirt intracavity and is the horn structure.

As a further description of the above technical solution: the dust removal external member and the scraping ring are made of rubber materials.

The utility model discloses following beneficial effect has:

in the utility model, the dust removal sleeve part, the annular cavity, the scraping ring, the dust collection cavity and the through hole are adopted to form the piston rod dust removal mechanism, the dust removal sleeve part is sleeved on the cylinder cover of the cylinder body, so that the two scraping rings which incline oppositely in the inner ring of the dust removal sleeve part are abutted against the surface of the piston rod, when the piston rod stretches out and draws back, the two scraping rings which incline oppositely can scrape the dust and the cylinder oil on the surface of the piston rod into the dust collection cavity between the two scraping rings, and then the dust and the cylinder oil on the surface of the piston rod are led into the annular cavity through the through hole on the inner side of the dust collection cavity, the condition that the dust and the cylinder oil are adhered and are more viscous is effectively avoided;

the utility model discloses in, through the snap ring, the draw-in groove, the projection, keep off the ring, the engaging lug constitutes the fixed establishment of dust removal external member, when the dust removal external member embolias the cylinder cap, through the snap ring with two semi-ring constitutions in opposite directions, with the periphery of snap ring nestification at the cylinder cap, make fender ring and the cylinder body butt of snap ring, and the projection embedding of snap ring internal surface is in the draw-in groove of dust removal external member, run through the engaging lug of snap ring through the bolt, it is fixed to be convenient for will remove dust the external member, thereby improve the stability that the dust removal external member is in the cylinder cap, and simultaneously, the dust removal external member adopts snap ring bolt fastening's mode.

Drawings

Fig. 1 is a schematic structural view of a large-diameter hydraulic cylinder of the present invention;

FIG. 2 is a schematic structural view of a dust removing kit of a large-diameter hydraulic cylinder according to the present invention;

fig. 3 is a schematic view of a snap ring structure of a large-diameter hydraulic cylinder according to the present invention;

fig. 4 is a partial cross-sectional view of the dust removing kit of the large-diameter hydraulic cylinder of the present invention.

Illustration of the drawings:

1. a cylinder body; 2. a snap ring; 3. a dust removal kit; 4. an annular cavity; 5. an ear ring; 6. a cylinder cover; 7. a piston rod; 8. a card slot; 9. a through hole; 10. scraping rings; 11. a convex column; 12. a baffle ring; 13. connecting lugs; 14. a dust collection chamber.

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.

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; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated 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.

According to the utility model discloses an embodiment provides a heavy-calibre pneumatic cylinder.

Referring now to the drawings and the detailed description, as shown in fig. 1-4, a large-diameter hydraulic cylinder according to an embodiment of the present invention includes a cylinder body 1, a cylinder cover 6 is disposed at one end of the cylinder body 1, a piston rod 7 is disposed inside the cylinder body 1, an ear ring 5 is fixedly disposed at one end of the piston rod 7 through the cylinder cover 6, a dust-collecting kit 3 is sleeved on the surface of the cylinder cover 6, two scraping rings 10 are disposed on the inner ring of the dust-collecting kit 3, both the two scraping rings 10 abut against the surface of the piston rod 7, a dust-collecting chamber 14 is formed between the two scraping rings 10, a through hole 9 is disposed inside the dust-collecting chamber 14, an annular chamber 4 is disposed on one side surface of the dust-collecting kit 3, the through hole 9 of the dust-collecting chamber 14 is communicated with the annular chamber 4 through the dust-collecting kit 3, a plurality of clamping grooves 8 are disposed around the outer, the two oppositely inclined scraping rings 10 in the inner ring of the dust removal sleeve 3 are enabled to abut against the surface of the piston rod 7, when the piston rod 7 extends and retracts, the two oppositely inclined scraping rings 10 can scrape dust and cylinder oil on the surface of the piston rod 7 into the dust collection cavity 14 between the two scraping rings 10 (when the piston rod 7 extends, one scraping ring 10 scrapes the dust and the cylinder oil on the surface of the piston rod 7 into the dust collection cavity 14, and when the piston rod 7 retracts, the other scraping ring 10 scrapes the dust and the cylinder oil on the surface of the piston rod 7 into the dust collection cavity 14), in the process that the piston rod 7 continuously extends and retracts, the cylinder oil and the dust on the surface of the piston rod 7 are enabled to continuously enter the dust collection cavity 14 to be accumulated to form exhausted power, and then the power is led into the annular cavity 4 through the through hole 9 on the inner side of the dust collection cavity 14, the phenomenon that the dust and the cylinder, thereby ensuring the fluency of the piston rod 7 in the extension and retraction process;

in one embodiment, the outer ring of the cylinder cover 6 is sleeved with the snap ring 2, the snap ring 2 is formed by combining two half rings, the inner surfaces of the two half rings are welded with an arc-shaped plate and a convex column 11, the arc-shaped plates of the two half rings form a baffle ring 12, and the inner surfaces of the two semi-rings are all welded with a plurality of convex columns 11 in a surrounding way, the convex columns 11 correspond to the clamping grooves 8 of the dust removing suite 3 one by one, the retainer ring 12 of the retainer ring 2 is enabled to be abutted against the cylinder body 1 by nesting the retainer ring 2 at the periphery of the cylinder cover 6, and the convex column 11 of the snap ring 2 is embedded in the clamping groove 8 of the dust removing external member 3, the dust removing external member 3 is fixed by penetrating the connecting lug 13 of the snap ring 2 through a bolt, when the dust removal external member 3 needs to be disassembled, the stop ring 12 of the snap ring 2 is separated from the cylinder body 1 by unlocking the bolt of the snap ring 2, and the convex column 11 of the clamping ring 2 is separated from the clamping groove 8 of the dust removing external member 3, so that the dust removing external member 3 is convenient to clean.

In one embodiment, the two scraper rings 10 of the dust removing kit 3 are inclined towards each other, a plurality of through holes 9 are formed in the dust collecting cavity 14 between the two scraper rings 10 in a surrounding manner, the plurality of through holes 9 all penetrate through the dust removing kit 3 and are communicated with the annular cavity 4, the plurality of through holes 9 facilitate discharging dust and cylinder oil in the dust collecting cavity 14, wherein the cylinder oil is lubricating oil or hydraulic oil attached to the surface of the piston rod 7, and the scraper rings 10 inevitably scrape off a part of the lubricating oil or hydraulic oil during dust removing, and the dust is also favorably led out in such a state.

In one embodiment, the baffle ring 12 on the inner side of the snap ring 2 is abutted to the surface of the cylinder body 1, the two ends of the snap ring 2 are welded with the connecting lugs 13, the surface of each connecting lug 13 is provided with a threaded hole, and the bolts penetrate through the connecting lugs 13 of the snap ring 2, so that the dust removal kit 3 is fixed conveniently.

In one embodiment, the cross section of the through hole 9 is an L-shaped structure, and one end of the through hole 9 is located in the dust collection cavity 14 and is in a trumpet-shaped structure, and the trumpet-shaped structure is opened, so that dust and cylinder oil in the dust collection cavity 14 can be collected as much as possible, and the dust and the cylinder oil can be discharged conveniently.

In one embodiment, the dust removing sleeve 3 and the scraping ring 10 are made of rubber, the dust removing sleeve 3 made of rubber is convenient to be sleeved on the cylinder cover 6, the scraping ring 10 made of rubber facilitates the piston rod 7 to be stretched and installed on the dust collecting cavity 14, when the piston rod 7 stretches, the two scraping rings 10 which are inclined oppositely enable one of the scraping rings 10 to scrape dust and cylinder oil on the surface of the piston rod 7 into the dust collecting cavity 14, when the piston rod 7 stretches, the dust scraping effect of the other scraping ring 10 which is inclined along the stretching direction of the piston rod 7 is not obvious, so that the dust and the cylinder oil enter between the two scraping rings 10, when the piston rod 7 retracts, the other scraping ring 10 is in a state which is not along the retracting direction of the piston rod 7, and the other scraping ring 10 scrapes the dust and the.

The working principle is as follows:

when the dust removing sleeve is used, the dust removing sleeve 3 is sleeved on the cylinder cover 6 of the cylinder body 1, two oppositely inclined scraping rings 10 in the inner ring of the dust removing sleeve 3 are enabled to be abutted against the surface of the piston rod 7, then the clamping rings 2 formed by the two half rings are oppositely combined, the clamping rings 2 are nested on the periphery of the cylinder cover 6, the baffle rings 12 of the clamping rings 2 are enabled to be abutted against the cylinder body 1, the convex columns 11 of the clamping rings 2 are embedded into the clamping grooves 8 of the dust removing sleeve 3, the dust removing sleeve 3 is fixed by penetrating through the connecting lugs 13 of the clamping rings 2 through bolts, when the piston rod 7 extends, the two oppositely inclined scraping rings 10 can scrape the dust and the cylinder oil on the surface of the piston rod 7 into the dust collecting cavity 14 between the two scraping rings 10 (when the piston rod 7 extends, one scraping ring 10 scrapes the dust and the cylinder oil on the surface of the piston rod 7 into the dust collecting cavity 14, and when the piston rod 7 retracts), in the continuous flexible in-process of piston rod 7, make the continuous entering dust collecting chamber 14 of jar oil and the dust on piston rod 7 surface accumulate, form exhaust power, and then in the leading-in annular chamber 4 of through-hole 9 through dust collecting chamber 14 inboard, effectively avoid the dust on piston rod 7 surface and jar oil adhesion and send out the sticky condition more, reduce the flexible retardant of piston rod 7, thereby guarantee the fluency of piston rod 7 at flexible in-process, when needs dismantle dust removal external member 3, through the bolt of unblock snap ring 2, make the fender ring 12 of snap ring 2 break away from cylinder body 1, and the projection 11 of snap ring 2 breaks away from the draw-in groove 8 of dust removal external member 3, be convenient for the clearance of dust removal external member 3.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a heavy-calibre pneumatic cylinder, includes cylinder body (1), its characterized in that: the one end of cylinder body (1) is provided with cylinder cap (6), and the internally mounted of cylinder body (1) has piston rod (7), the one end of piston rod (7) runs through cylinder cap (6) fixed mounting has earrings (5), the surface of cylinder cap (6) has cup jointed dust removal external member (3), and the inner circle of dust removal external member (3) is provided with two scraping rings (10), two scraping ring (10) all with the surperficial butt of piston rod (7), and two scraping between ring (10) constitute dust collection chamber (14), through-hole (9) have been seted up to dust collection chamber (14) inboard, annular chamber (4) have been seted up to dust removal external member (3) side surface, through-hole (9) of dust collection chamber (14) link up dust removal external member (3) and annular chamber (4) intercommunication, dust removal external member (3) surface is encircleed and has been seted up a.

2. A large bore hydraulic cylinder according to claim 1, wherein: the outer surrounding ring of cylinder cap (6) is overlapped and is connected with snap ring (2), and snap ring (2) are formed by two semi-ring combinations, two the semi-ring internal surface all welds arc and projection (11), and the arc of two semi-rings constitutes fender ring (12) to the internal surface of two semi-rings all encircles the welding and has a plurality of projections (11), projection (11) and draw-in groove (8) one-to-one of dust removal external member (3).

3. A large bore hydraulic cylinder according to claim 1, wherein: the two scraping rings (10) of the dust removal external member (3) are inclined oppositely, a plurality of through holes (9) are annularly arranged in a dust collection cavity (14) between the two scraping rings (10), and the through holes (9) are communicated with the annular cavity (4) through the dust removal external member (3).

4. A large bore hydraulic cylinder according to claim 2, wherein: the inner side of the clamping ring (2) is abutted to the surface of the cylinder body (1) through the baffle ring (12), the two ends of the clamping ring (2) are welded with the connecting lugs (13), and the surface of each connecting lug (13) is provided with a threaded hole.

5. A large bore hydraulic cylinder according to claim 1, wherein: the cross section of the through hole (9) is of an L-shaped structure, and one end of the through hole (9) is located in the dust collection cavity (14) and is of a trumpet-shaped structure.

6. A large bore hydraulic cylinder according to claim 1, wherein: the dust removal external member (3) and the scraping ring (10) are made of rubber materials.