CN201255152Y - Lever-plug integral multi-stage sealing jaw cylinder system - Google Patents

Abstract

The utility model discloses a rod and piston one-piece multi-level sealing jaw hydraulic oil cylinder device, comprising a jaw fan-shaped plate (1), a sealing cover (9), a sealing sleeve (2), a piston rod (3) and a piston (4). The hydraulic oil cylinder device is characterized in that the piston rod (3) and the piston (4) are of an one-piece, and a dustproof ring (6) is arranged on the inner side wall of the front end part of the sealing sleeve (2); two XYd double polyurethane lip-shaped sealing rings (7,7 ') are arranged on the inner side wall of the middle part of the sealing sleeve (2), and a front O-shaped sealing ring and a back O-shaped sealing ring ( 5,5 ') are arranged in annular grooves on the outer side walls of the front end and the back end of the sealing sleeve(2). With the one-piece structure of the piston rod and the piston, multi-level sealing and the dustproof ring, the hydraulic oil cylinder device has good sealing effect, good guiding performance, low leakage coefficient, reduced wear and tear, improved structural strength, prolonged service life and improved effectiveness of a coiler, and meets the production requirements of rolling units.

Description

The multi-stage sealed jaw cylinder system of bar plug integral type

Technical field

The utility model relates to a kind of improvement of jaw cylinder system, and the multi-stage sealed jaw cylinder system of specifically a kind of bar plug integral type is applicable to coiler mandrel hydraulic jaw in the rolling unit production.

Background technique

At present, when general rolling unit is produced, be that steel band enters entry and exit coiler mandrel sector hydraulic jaw, clamp band steel hightension and batch, milling train applies certain rolling pressure and builds rolling.The jaw cylinder system plays crucial effects in the coiling machine clamping process, whether its working state is normal, will directly affect the ordinary production of rolling unit.The work under bad environment of jaw cylinder system: coiling machine bears hightension and batches, and coiling machine jaw sector bearing capacity is big; The iron filings, the greasy dirt that produce in long-term work temperature height (reel operating temperature〉90 ℃), the contact production process.The present jaw cylinder system that uses, form by jaw sector, capping, stuffing box gland, piston rod, piston, list " O " shape seal ring, stuffing box gland is installed in the round chamber at jaw sector middle part, stuffing box gland is sleeved on the piston rod, piston is installed in the piston sliding cavity of jaw sector rear end, and piston rod is fastenedly connected by bolt and piston.This jaw cylinder system has the following disadvantages: the one, because at the front end of the stuffing box gland konisphere of not setting up defences, so the greasy dirt particle enters in the gap between piston rod and the stuffing box gland easily, can cause the piston rod plucking, the stuffing box gland excessive wear; The 2nd, because the sealing between stuffing box gland and the piston rod is to adopt this special seal ring, this kind sealed material is hard, crisp, so steering capability and poor sealing performance, leadage coefficient are bigger, assembling is wasted time and energy, and seals fragile; The 3rd, owing between stuffing box gland and jaw sector middle part round chamber inwall, adopt single " O " RunddichtringO sealing, so, cause piston rod location, guiding and sealability all relatively poor; The 4th, fastening with interior six square bolts because piston and piston rod are split type assembling by piston rod rearward end internal thread, so, piston rod, piston are under the effect of oil pressure in the frequent to-and-fro motion, the easy loose or dislocation of clamping bolt causes piston to break away from piston rod, causes the jaw cylinder action malfunctioning; If in running, when the jaw cylinder system frequently leaks, can cause rolling unit to be forced to stop production.

Summary of the invention

The purpose of this utility model is to provide a kind of deficiency that overcomes above existing jaw cylinder system, makes that it is simple in structure, easy for installation, good seal performance, long service life, can improve the multi-stage sealed jaw cylinder system of bar plug integral type of coiling machine usability.

For reaching above purpose, the technological scheme that the utility model adopted is: the multi-stage sealed jaw cylinder system of this bar plug integral type, by the jaw sector, capping, stuffing box gland, piston rod and piston constitute, stuffing box gland is installed in the round chamber at jaw sector middle part, stuffing box gland is sleeved on the piston rod, piston is installed in the piston sliding cavity of jaw sector rear end, it is characterized in that piston rod and piston are an integral body, make by casting, the konisphere of setting up defences in the circular groove on the madial wall of stuffing box gland front end, dust ring is set on the piston rod, to prevent that the greasy dirt particle from entering in the gap between piston rod and the stuffing box gland, piston rod is caused plucking, establish the two polyurethane lip-type packings of XYd in two circular grooves on the madial wall of stuffing box gland middle part respectively, two two polyurethane lip-type packings of Xyd all are sleeved on the piston rod, realize multi-stage sealed between piston rod and the stuffing box gland, before stuffing box gland, before establishing in the circular groove on the outer side wall of rear end, back " O " RunddichtringO is realized multi-stage sealed between the round chamber inwall in the middle part of stuffing box gland and the jaw sector.The utility model is also implemented by following measure: the chromium coating thickness on piston rod is 0.10mm, and the degree of finish of piston rod is 1.6 grades; Described piston is enclosed by piston rigid body and guide ring, lattice and constitutes, guide ring is established two, and Ge Laiquan is located between two guide rings, is stuck in the respective annular groove on the piston rigid body outer wall, establish the installation gripping head in the outer end of piston, gripping head is installed is can be hexahedron.During use, can by the hydraulic control component commutation,, clamp steel band by piston rod promotion shifting board and clamping panel and take the lead rolling according to the requirement of manufacturing operation by providing pressure source in rotation oilier and the chamber of harmomegathus cylinder for the piston both sides.

The beneficial effects of the utility model are: 1, owing to adopt the two polyurethane lip-type packings of XYd, this kind seal ring has good sealing effect, steering capability is good, leadage coefficient is low advantage, so, improved sealability and steering capability between piston rod and the stuffing box gland; 2, owing to established dust ring at the stuffing box gland front end, particles such as greasy dirt are kept off in the outer end of stuffing box gland, so alleviated the wearing and tearing of stuffing box gland and piston rod by dust ring; 3, owing to adopt two " O " RunddichtringO sealings on the outer wall of stuffing box gland, so improved the sealability between stuffing box gland and the jaw sector middle part round chamber inwall, friction increases simultaneously, has played the effect of stuffing box gland location; 4, because piston rod and piston are integral structure, so, having strengthened its structural strength, avoided being in operation piston rod and piston come off; 5, because the chromium plating depth of piston rod is 0.10mm, and piston rod degree of finish is brought up to 1.6 grades, institute has prolonged working life so that the piston rod antiwear property further improves, and has improved rolling unit coiling machine task performance, has satisfied the requirement that rolling unit is produced.

Description of drawings

Fig. 1 cuts open schematic representation for the utility model structure master office of looking.

Fig. 2 is the utility model along piston rod and piston shaft to cross-sectional schematic.

Embodiment

Make the utility model with reference to accompanying drawing 1,2.The multi-stage sealed jaw cylinder system of this bar plug integral type, by jaw sector 1, capping 9, stuffing box gland 2, piston rod 3 and piston 4 constitute, stuffing box gland 2 is installed in the round chamber at jaw sector 1 middle part, stuffing box gland 2 is sleeved on the piston rod 3, piston 4 is installed in the piston sliding cavity of jaw sector 1 rear end, it is characterized in that piston rod 3 and piston 4 are an integral body, make by casting, the konisphere 6 of setting up defences in the circular groove on the madial wall of stuffing box gland 2 front ends, dust ring 6 is set on the piston rod 3, establish the two polyurethane lip-type packings 7 of XYd in two circular grooves on stuffing box gland 2 middle part madial walls respectively, 7 ', two two polyurethane lip-type packings 7 of Xyd, 7 ' all are sleeved on the piston rod 3, before stuffing box gland 2, before establishing in the circular groove on the outer side wall of rear end, back " O " RunddichtringO 5,5 '.Chromium coating thickness on piston rod 3 is 0.10mm, and the degree of finish of piston rod 3 is 1.6 grades; Described piston 4 encloses 4c by piston rigid body 4a and guide ring 4b, lattice and constitutes, guide ring 4b establishes two, lattice enclose 4c and are located between two guide ring 4b, be stuck in the respective annular groove on the piston rigid body 4a outer wall, establish installation gripping head 4d in the outer end of piston 4, gripping head 4d is installed can be hexahedron.

Claims (2)

1, the multi-stage sealed jaw cylinder system of a kind of bar plug integral type, by jaw sector (1), capping (9), stuffing box gland (2), piston rod (3) and piston (4) constitute, stuffing box gland (2) is installed in the round chamber at jaw sector (1) middle part, stuffing box gland (2) is sleeved on the piston rod (3), piston (4) is installed in the piston sliding cavity of jaw sector (1) rear end, it is characterized in that piston rod (3) and piston (4) are an integral body, the konisphere (6) of setting up defences in the circular groove on the madial wall of stuffing box gland (2) front end, dust ring (6) is set on the piston rod (3), establish the two polyurethane lip-type packings (7 of XYd in two circular grooves on the madial wall of stuffing box gland (2) middle part respectively, 7 '), two two polyurethane lip-type packings (7 of Xyd, 7 ') all be sleeved on the piston rod (3), before stuffing box gland (2), before establishing in the circular groove on the outer side wall of rear end, back " O " RunddichtringO (5,5 ').

2, the multi-stage sealed jaw cylinder system of bar plug integral type according to claim 1, it is characterized in that described piston (4) is made of piston rigid body (4a) and guide ring (4b), Ge Laiquan (4c), guide ring (4b) is established two, lattice enclose (4c) and are located between two guide rings (4b), be stuck in the respective annular groove on piston rigid body (4a) outer wall, establish in the outer end of piston (4) gripping head (4d) is installed.

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