CN212106440U

CN212106440U - Upsetting oil cylinder of anchor chain flash welding machine

Info

Publication number: CN212106440U
Application number: CN202020623780.6U
Authority: CN
Inventors: 张毅
Original assignee: Yaxing Zhenjiang Mooring Chain Co ltd
Current assignee: Yaxing Zhenjiang Mooring Chain Co ltd
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2020-12-08
Anticipated expiration: 2030-04-23

Abstract

The utility model discloses an anchor chain flash welding machine upset forging hydro-cylinder, including cylinder, two cylinder caps, piston rod, four pull rods, several draw-bar nut, compound guider, piston rod uide bushing, gland, combination seal circle and piston seal circle, piston rod middle part radial extension becomes the piston, and in the radial middle part of piston seal circle symmetry embedding piston, the piston guide ring imbeds respectively and fixes on the radial both ends of piston. The two ends of the piston rod respectively extend out of the corresponding cylinder covers, the gland is pressed into one end of each cylinder cover departing from the cylinder barrel through a plurality of fastening screws, and the combined sealing ring and the composite guide device are positioned among the inner hole of the gland, the through hole of the cylinder cover and the peripheral surface of the piston rod. The utility model discloses fundamentally has stopped the upset hydro-cylinder and has produced the trouble of decompression, has improved the stress state of piston rod and the guidance quality of upset hydro-cylinder greatly, has prolonged the life of upset hydro-cylinder, has improved the reliability of upset hydro-cylinder work.

Description

Upsetting oil cylinder of anchor chain flash welding machine

Technical Field

The utility model relates to a piston cylinder, especially an upset hydro-cylinder for anchor chain welding takes shape belongs to hydraulic actuator technical field.

Background

The anchor chain flash welding machine is the most key equipment in the modern electric welding anchor chain manufacturing process, and is directly related to the quality of an anchor chain ring. In the process of the flash welding of the anchor chain ring, the upper electrode block and the lower electrode block of the fixed platform and the movable platform of the flash welding machine respectively vertically clamp two butt welding ends on one side of a horizontally placed ring body, and then the upper electrode block and the lower electrode block are electrified to preheat the clamped butt welding ends. And then under the control of a servo valve of a flash welding machine, an upsetting oil cylinder pushes an upper electrode block and a lower electrode block of a movable platform to clamp the butt welding end of the anchor chain ring preheated to a set temperature to frequently approach and pull away the butt welding end of the anchor chain ring towards the direction of the fixed platform, the butt welding end face of the anchor chain ring is heated and melted to form liquid metal under the action of large current, then the movable platform continues to frequently approach and pull away, the liquid metal is continuously extruded and exploded and sprayed out from the butt welding end face of the anchor chain ring to form flash, a liquid metal layer is formed on the butt welding end face of the anchor chain ring, when the flash is finished, the upsetting oil cylinder pushes the movable platform to rapidly increase the speed, and the upsetting pressure is applied to the anchor chain ring, so that the butt welding end faces of the. In the whole operation cycle of flash welding, the upsetting oil cylinder always frequently acts under the severe working conditions of high temperature and high pressure.

The existing upsetting oil cylinder is a single-output-shaft oil cylinder, a piston of the single-output-shaft oil cylinder adopts a mode that a guide ring is clamped at the outer edges of two half pistons, and Y parts are respectively embedded at two sides of the guide ring_XThe shaped sealing ring seals the gap between the outer circle of the piston and the inner hole of the cylinder barrel, and then an O-shaped sealing ring seals the gap between the adjacent end surfaces of the two pistons and the gap between the inner hole of the piston and the outer circle of the piston rod, so that the high-pressure cavity and the oil return cavity of the upsetting oil cylinder can be separated by the piston. One end of the piston rod penetrates through the centers of the two half pistons and is fastened by a connecting nut, and then the piston is prevented from loosening by a retaining screw, so that the piston is fixed at one end of the piston rod. When the flash welding machine works, the upsetting oil cylinder bears larger impact load, the connecting nut is loosened after long-term work, a gap is generated between the two half pistons, the O-shaped sealing ring fails to seal, so that oil channeling of a high-pressure cavity and an oil return cavity of the upsetting oil cylinder is caused, the upsetting oil cylinder cannot generate high pressure, the flash welding is interrupted, and the welding quality of the anchor chain ring is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an anchor chain flash welding machine upset forging hydro-cylinder improves the guidance quality and the reliability of hydro-cylinder work of hydro-cylinder.

The utility model discloses a following technical scheme realizes:

an upset forging oil cylinder of an anchor chain flash welding machine comprises a cylinder barrel, two cylinder covers, a piston rod, four pull rods, a plurality of pull rod nuts, a piston guide ring, a composite guide device, a gland, a combined seal ring and a piston seal ring, wherein two ends of the cylinder barrel are respectively embedded into one side of the cylinder cover; the middle part of the piston rod extends radially to form a piston, the piston sealing rings are symmetrically embedded in the radial middle part of the piston, and the piston guide rings are respectively embedded and fixed at two radial ends of the piston; the two ends of the piston rod respectively extend out of the corresponding cylinder covers, the gland is pressed into one end of each cylinder cover departing from the cylinder barrel through a plurality of fastening screws, and the combined sealing ring and the composite guide device are positioned among the inner hole of the gland, the through hole of the cylinder cover and the peripheral surface of the piston rod.

The object of the invention is further achieved by the following technical measures.

Further, the combined sealing ring is a V-shaped combined sealing ring. The piston sealing ring is an O-shaped combined sealing ring.

Further, compound guider includes uide bushing and guide ring, the uide bushing pushes the cylinder cap middle part, and in the guide ring embedding gland, uide bushing hole, guide ring hole and piston rod outer peripheral face clearance fit.

The utility model discloses a radial overall structure who becomes the piston that extends in piston rod middle part, piston rod are the both ends and stretch out the two play axle types of the cylinder cap that correspond respectively, and fundamentally stops to take place because not hard up make the high-pressure chamber of oil cylinder body and oil return chamber oil scurry and lead to the trouble of upset forging hydro-cylinder decompression between piston and the piston rod. The piston rod adopts a structure of double output shafts at two ends of the oil cylinder body, so that the piston rod of the upsetting oil cylinder is changed from single-point support to double-point support, the guide length of the piston rod is doubled, the stress state of the piston rod and the guide performance of the upsetting oil cylinder are greatly improved, the service life of the upsetting oil cylinder is prolonged, and the working reliability of the upsetting oil cylinder is improved.

The advantages and features of the invention will be illustrated and explained by the following non-restrictive description of preferred embodiments, which are given by way of example only with reference to the accompanying drawings.

Drawings

Fig. 1 is a full sectional view of the present invention.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1, the utility model discloses a cylinder 1, two cylinder caps 2, piston rod 3, four pull rods 4, 8 pull rod nut 5, piston guide ring 6, compound guider 7, gland 8, combination sealing washer 9 and piston seal ring 10, during 1 both ends of cylinder imbed 2 one sides of cylinder cap respectively to it is sealed through O shape sealing washer 21. The pull rods 4 respectively transversely penetrate through four corners of the cylinder covers 2 at two ends of the cylinder barrel 1, and the cylinder barrel 1 and the cylinder covers 2 are fixedly connected into the oil cylinder body with the closed cavity through 2 pull rod nuts 5 screwed at the ends of the pull rods 4 respectively. The middle part of the piston rod 3 extends radially to form a piston 31, and the piston sealing ring 10 adopts an O-shaped combined sealing ring with good sealing and compensation functions and is symmetrically embedded in the radial middle part of the piston 31. The right-hand member end of piston rod 3 and flash welding machine's movable table fixed connection, the left end is as the trigger end of 3 initial positions of piston rod. The piston guide rings 6 are fitted and fixed in both radial ends of the piston 31, respectively. The two ends of the piston rod 3 respectively extend out of the corresponding cylinder covers 2, the gland 8 is respectively pressed into one ends of the cylinder covers 2 departing from the cylinder barrel 1 through a plurality of fastening screws 81, and the V-shaped combined sealing ring and the composite guiding device 7 which are used as the combined sealing ring 9 are positioned among the gland inner hole 82, the cylinder cover through hole 22 and the peripheral surface of the piston rod 3.

The composite guide device 7 comprises a guide sleeve 71 and a guide ring 72, the guide sleeve 71 made of copper alloy materials is pushed into the middle of the cylinder cover 2, the guide ring 72 is embedded into the gland 8, and an inner hole of the guide sleeve 71 and an inner hole of the guide ring 72 are in clearance fit with the outer peripheral surface of the piston rod 3, so that good support and sealing are improved for two ends of the piston rod 3.

In addition to the above embodiments, the present invention can also have other embodiments, and all technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. An upset forging oil cylinder of an anchor chain flash welding machine comprises a cylinder barrel, two cylinder covers, a piston rod, four pull rods, a plurality of pull rod nuts, a piston guide ring, a composite guide device, a gland, a combined seal ring and a piston seal ring, wherein two ends of the cylinder barrel are respectively embedded into one side of the cylinder cover; the method is characterized in that: the middle part of the piston rod extends radially to form a piston, the piston sealing rings are symmetrically embedded in the radial middle part of the piston, and the piston guide rings are respectively embedded and fixed at two radial ends of the piston; the two ends of the piston rod respectively extend out of the corresponding cylinder covers, the gland is pressed into one end of each cylinder cover departing from the cylinder barrel through a plurality of fastening screws, and the combined sealing ring and the composite guide device are positioned among the inner hole of the gland, the through hole of the cylinder cover and the peripheral surface of the piston rod.

2. The anchor chain flash welder upset forging oil cylinder of claim 1, characterized in that: the combined sealing ring is a V-shaped combined sealing ring.

3. The anchor chain flash welder upset forging oil cylinder of claim 1, characterized in that: the piston sealing ring is an O-shaped combined sealing ring.

4. The anchor chain flash welder upset forging oil cylinder of claim 1, characterized in that: the composite guide device comprises a guide sleeve and a guide ring, the guide sleeve is pushed into the middle of the cylinder cover, the guide ring is embedded into the gland, and an inner hole of the guide sleeve and an inner hole of the guide ring are in clearance fit with the outer peripheral surface of the piston rod.