CN215058567U - Oil cylinder with dual dustproof functions - Google Patents

Abstract

The utility model discloses an oil cylinder with double dustproof functions, which comprises an oil cylinder barrel, a piston rod capable of doing linear reciprocating motion in the oil cylinder barrel and a cylinder barrel sealing ring sealed between the oil cylinder barrel and the piston rod, wherein the upper end of the oil cylinder barrel is provided with a sealing cylinder barrel sealing ring and a sealing device extending out of a piston rod part of the oil cylinder barrel, and the sealing device adopts a telescopic structure; a protective cover is fixedly connected to the piston rod above the sealing device; the protection casing is steel cylinder structure, covers the hydro-cylinder, when the piston rod reciprocates, the lower extreme of protection casing can reciprocate between the both ends of hydro-cylinder. The utility model discloses a sealing device and protection casing have realized the effect of dual dirt of sealing, have higher leakproofness and seal the dirt effect to simple structure easily produces.

Description

Oil cylinder with dual dustproof functions

Technical Field

The utility model relates to a hydro-cylinder, especially a hydro-cylinder with dual dustproof function.

Background

The oil cylinder, i.e. the hydraulic cylinder, is a linear motion type actuating element with output force in direct proportion to the effective area of the piston and the pressure difference between the two sides of the piston. Because the piston of the hydraulic cylinder can complete linear reciprocating motion, although the output linear displacement is limited, the hydraulic cylinder can replace manual work to complete various tasks which cannot be reached by human power, and is widely applied to various industries in the society. Traditional hydraulic cylinder's basic component part includes cylinder and piston rod, sealing device, though set up one dust sealing in the cylinder body for prevent that dust and impurity from getting into the hydro-cylinder inside, but some hydraulic cylinder's service environment is very abominable, single one dust sealing can't satisfy dustproof requirement. Particularly, in an iron-making working environment, the oil cylinder is often used for inclining molten iron smelted in the steel shell electric furnace, along with the extension and contraction of the oil cylinder, dust on the steel shell electric furnace can fall on a piston rod of the oil cylinder, the cylinder barrel of the oil cylinder is abraded in a sealing mode, oil leakage is caused, and even high-temperature steel residues fly off. The flying high-temperature steel residues can be attached to the piston rod on one hand, and the dust-proof sealing piece is broken when the piston rod is displaced; on the other hand, the dust-proof sealing member made of common materials (rubber, cloth and the like) is burnt by flying high-temperature steel residues.

Therefore, to avoid the above problems, it is necessary to provide a hydraulic ram that is resistant to common dust and high temperature slag to overcome the problems encountered in high temperature ironmaking environments.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a can prevent ordinary dust and can prevent the hydro-cylinder that has dual dustproof function of high temperature residue.

In order to solve the technical problem, the utility model discloses the technical scheme who takes is: an oil cylinder with double dustproof functions comprises an oil cylinder barrel, a piston rod capable of performing linear reciprocating motion in the oil cylinder barrel and a cylinder barrel sealing ring sealed between the oil cylinder barrel and the piston rod, wherein the upper end of the oil cylinder barrel is provided with a sealing cylinder barrel sealing ring and a sealing device extending out of a piston rod part of the oil cylinder barrel, and the sealing device adopts a telescopic structure; a protective cover is fixedly connected to the piston rod above the sealing device; the protection casing is steel cylinder structure, covers the hydro-cylinder, when the piston rod reciprocates, the lower extreme of protection casing can reciprocate between the both ends of hydro-cylinder.

In the oil cylinder with the double dustproof functions, the outer wall of the cylinder barrel of the oil cylinder is provided with the limiting strip; the limiting strip is arranged along the length direction of the cylinder barrel of the oil cylinder and is provided with a guide groove in the length direction; and a pulley is matched in the guide groove in a sliding manner and is rotatably connected to the protective cover.

In the oil cylinder with the double dustproof functions, the sealing device comprises a hoop, a dustproof sleeve and a dustproof ring plate; the dustproof ring plate is fixedly connected with and covers the upper end of the cylinder barrel of the oil cylinder; the dustproof ring plate is integrally connected with a dustproof sleeve; the dustproof sleeve is a telescopic sleeve body, is sleeved and connected on the piston rod, and the upper end of the dustproof sleeve is fixedly connected on the piston rod through a hoop.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the utility model discloses set up sealing device in the upper end of hydro-cylinder and stretch out the part of hydro-cylinder with cylinder sealing washer and piston rod and seal up, effectively prevented that tiny dust from adhering to on the piston rod or directly getting into cylinder sealing washer, the removal along with the piston rod of the tiny dust of avoiding adhering to on the piston rod from damaging cylinder sealing washer to lead to hydro-cylinder oil leak. The utility model discloses the protection casing that links firmly the steel cylinder structure on the piston rod of sealing device top covers the hydro-cylinder, covers the hydro-cylinder all the time when the piston rod reciprocates, has effectively prevented that the high temperature residue that splashes from flying to fall on piston rod or cylinder sealing washer, has avoided the high temperature residue to burn out the cylinder sealing washer and lead to hydro-cylinder oil leak. The utility model discloses a sealing device and protection casing have realized the effect of dual dirt of sealing, have higher leakproofness and seal the dirt effect to simple structure easily produces.

Additionally, the utility model discloses still with protection casing installation pulley to set up the guide way that supplies the pulley to reciprocate at hydro-cylinder outer wall. Like this, the protection casing not only can support on hydro-cylinder outer wall through the pulley, still can be through the pulley along with the more stable removal of piston rod, can also avoid the protection casing because self weight and harm the piston rod when the iron melt that melts and take place the slope in the hydro-cylinder slope box hat electric stove, improved the stability that the protection casing removed. The utility model is also provided with a dustproof ring plate and covers the upper end of the oil cylinder barrel for sealing the cylinder barrel sealing ring at the upper end of the oil cylinder barrel and preventing fine dust from entering the cylinder barrel sealing ring; and the dustproof ring plate is integrally connected with the dustproof sleeve, and the dustproof sleeve covers the piston rod extending out of the cylinder barrel of the oil cylinder, so that fine dust is effectively prevented from being attached to the piston rod, and the dustproof effect is further improved. The utility model has the characteristics of stability is high, dustproof effect etc.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural diagram of the present invention.

The figures are numbered: 1-oil cylinder barrel, 2-piston rod, 3-cylinder barrel sealing ring, 4-hoop, 5-dustproof ring plate, 5-1-dustproof sleeve, 6-protective cover, 7-bolt, 8-limiting strip, 9-guide groove and 10-pulley.

Detailed Description

Referring to fig. 1, the oil cylinder with dual dustproof functions comprises an oil cylinder barrel 1, a piston rod 2 capable of performing linear reciprocating motion in the oil cylinder barrel 1, and a cylinder sealing ring 3 sealed between the oil cylinder barrel 1 and the piston rod 2. And a sealing device is arranged at the upper end of the cylinder barrel 1. The sealing device comprises a hoop 4, a dustproof sleeve, a dustproof ring plate 5 and a bolt 7. The dustproof ring plate 5 is connected to the upper end of the oil cylinder barrel 1 through a bolt 7 in a threaded mode and covers a cylinder barrel sealing ring at the upper end of the oil cylinder barrel 1. The dustproof ring plate 5 is integrally connected with a dustproof sleeve 5-1. The dustproof sleeve 5-1 is a telescopic sleeve body and is sleeved and connected on the piston rod 2, and the upper end of the dustproof sleeve is fixedly connected on the piston rod 2 through a hoop 4. Therefore, the dustproof sleeve 5-1 can be stretched or compressed along with the up-and-down movement of the piston rod 2 and always wraps the rod body part of the piston rod 2 extending out of the cylinder barrel 1.

Referring to fig. 1, a rod body of the piston rod 2 above the hoop 4 of the oil cylinder with the double dustproof functions is fixedly connected with a protective cover 6. The protective cover 6 is of a steel cylinder structure and covers the cylinder barrel 1 of the oil cylinder. Two limiting strips 8 are uniformly distributed on the outer wall of the oil cylinder barrel 1. And two ends of each limit strip 8 respectively correspond to the upper end and the lower end of the cylinder barrel 1 of the oil cylinder. And one surface of each limit strip 8, corresponding to the protective cover 6, is provided with a guide groove 9 which runs through the upper end and the lower end of the limit strip 8. A pulley 10 is arranged in each guide groove 9 in a vertically sliding fit mode. Each pulley 10 is rotatably connected to the lower end of the shield 6 through a connecting rod. The protective cover 6 can move up and down between the two ends of the oil cylinder barrel 1 along with the up and down movement of the piston rod 2. Therefore, in the process that the protective cover 6 moves up and down, the lower end of the protective cover 6 slides up and down in the guide groove 9 through the two pulleys 10 and is supported in the guide groove 9 through the two pulleys 10, so that the stability of the protective cover 6 in the process of moving up and down is improved; and when the oil cylinder inclines molten iron smelted in the steel shell electric furnace and inclines, the protection cover 6 is prevented from damaging the piston rod 2 due to the self weight.

Claims (3)

1. The utility model provides an hydro-cylinder with dual dustproof function, its includes hydro-cylinder (1), can be in hydro-cylinder (1) straight reciprocating motion's piston rod (2) and sealed cylinder sealing washer (3) between hydro-cylinder (1) and piston rod (2), its characterized in that: the upper end of the oil cylinder barrel (1) is provided with a sealing cylinder barrel sealing ring (3) and a sealing device extending out of a piston rod (2) part of the oil cylinder barrel (1), and the sealing device adopts a telescopic structure; a protective cover (6) is fixedly connected to the piston rod (2) above the sealing device; the protective cover (6) is of a steel cylinder structure, covers the oil cylinder barrel (1), and when the piston rod (2) moves up and down, the lower end of the protective cover (6) can move up and down between the two ends of the oil cylinder barrel (1).

2. The oil cylinder with the dual dustproof function according to claim 1, characterized in that: the outer wall of the oil cylinder barrel (1) is provided with a limiting strip (8); the limiting strip (8) is arranged along the length direction of the oil cylinder barrel (1) and is provided with a guide groove (9) along the length direction; the guide groove (9) is internally matched with a pulley (10) in a sliding way, and the pulley (10) is rotationally connected to the protective cover (6).

3. The oil cylinder with the dual dustproof function according to claim 1 or 2, characterized in that: the sealing device comprises a hoop (4), a dustproof sleeve and a dustproof ring plate (5); the dustproof ring plate (5) is fixedly connected with and covers the upper end of the oil cylinder barrel (1); the dustproof ring plate (5) is integrally connected with a dustproof sleeve (5-1); the dustproof sleeve (5-1) is a telescopic sleeve body and is sleeved on the piston rod (2), and the upper end of the dustproof sleeve is fixedly connected on the piston rod (2) through a hoop (4).

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