CN202718949U

CN202718949U - Large-tonnage cylinder

Info

Publication number: CN202718949U
Application number: CN 201220278135
Authority: CN
Inventors: 邵长生
Original assignee: XUZHOU XUYE HYDRAULIC TECHNOLOGY CO LTD
Current assignee: XUZHOU XUYE HYDRAULIC TECHNOLOGY CO LTD
Priority date: 2012-06-13
Filing date: 2012-06-13
Publication date: 2013-02-06
Anticipated expiration: 2022-06-13

Abstract

The utility model discloses a large-tonnage cylinder, which comprises a cylinder bottom, a piston, a cylinder barrel, a spacing ring, a piston rod and a core pipe, wherein the cylinder barrel is provided with a through hole which is tightly matched with the cylinder bottom; a guide sleeve is arranged at the other end of the through hole and outside a cylinder flange; the piston rod is sleeved in the cylinder barrel through the guide sleeve; a sealing cavity encircled by the cylinder barrel, the cylinder bottom and the guide sleeve is divided into an upper cavity and a lower cavity; an air inlet and an oil outlet are formed on the upper part of the piston rod; a core pipe is connected with the lower cavity and an oil port A; and an oil port B is communicated with the upper cavity. The large-tonnage cylinder has the advantages that the oil inlet and the oil outlet of the cylinder are positioned at the same position close to a place of which the upper end is near a hydraulic system, so that back-and-forth bending of a rubber tube can be reduced, a pipeline can be fixed on an object, the rubber tube is difficult to break, certain adverse states such as scratch and crush in work are avoided, maintenance of an external oil pipe is reduced, and the safety of the external oil pipe is improved.

Description

The large-tonnage oil cylinder

Technical field

The utility model relates to a kind of large-tonnage oil cylinder.

Background technique

Along with the now development of industrial building industry and machinery industry, the hydraulic cylinder jacking system with it distinctive stretching speed steadily, evenly, Security is reliable etc., and advantage is widely used.Nowadays the integral mold plate stock of tall building has just used overlength large-tonnage oil cylinder.Conventional oil cylinder oil inlet and outlet all should be in the rear and front end of oil cylinder, the high-pressure oil pipe of outside and rubber oil hose are all long when the adapted oil pipe like this, several drawbacks are in use arranged: the pipeline of (1) oil pipe is long, midway the pressure loss strengthens, the soldering point of (2) oil pipe increases, the number of bends frequency is large back and forth for (3) sebific duct, easily wears out, breaks, (4) in the situation that shortcomings such as the building site circumstance complication easily is extruded, scratches.Thereby strengthened maintenance and maintenance, reduce Security, time-consuming.

Summary of the invention

Problem for above-mentioned prior art existence, the utility model provides a kind of overlength large-tonnage oil cylinder, the same position of the oil inlet and outlet of oil cylinder, can be reduced the crooked back and forth of sebific duct and also pipeline can be fixed on the object from the closer place of hydraulic system near the upper end.

To achieve these goals, the technical solution adopted in the utility model is: a kind of large-tonnage oil cylinder, comprise cylinder bottom, piston, cylinder barrel, spacer ring, piston rod, core pipe, be provided with through hole on the cylinder barrel and cylinder bottom closely cooperates, guide sleeve is arranged on the other end of through hole, the cylinder flange place, and piston rod is linked in the cylinder barrel by guide sleeve, the seal chamber that cylinder barrel, cylinder bottom and guide sleeve are surrounded is divided into upper cavity and lower chamber, filler opening and oil outlet all are arranged on piston rod top, and the core pipe connects lower chamber and hydraulic fluid port A, and hydraulic fluid port B is together with upper cavity.

Further, piston rod adopts thick-wall seamless.

The beneficial effects of the utility model are: the same position of the oil inlet and outlet of oil cylinder, close upper end is from liquid

The crooked and pipeline can be fixed on the object back and forth of sebific duct so just can be reduced in the place that pressing system is closer, and sebific duct just is difficult for breaking, some unfavoured states such as also avoided scratch in the work, weigh wounded, economization maintenance and the Security of external oil pipe.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Among the figure: 1, cylinder bottom, 2, piston, 3, cylinder barrel, 4, spacer ring, 5, piston rod, 6, the core pipe, 7, guide sleeve, 8, flange, 9, hydraulic fluid port A, 10, hydraulic fluid port B.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

As shown in Figure 1, a kind of large-tonnage oil cylinder, comprise cylinder bottom 1, piston 2, cylinder barrel 3, spacer ring 4, piston rod 5, core pipe 6, be provided with through hole on the cylinder barrel 3 and cylinder bottom 1 closely cooperates, guide sleeve 7 is arranged on the other end of through hole, flange 8 places of oil cylinder, and piston rod 5 is linked in the cylinder barrel 3 by guide sleeve 7, the seal chamber that cylinder barrel 3, cylinder bottom 1 and guide sleeve 7 are surrounded is divided into upper cavity and lower chamber, hydraulic fluid port A9 and hydraulic fluid port B10 all are arranged on piston rod 5 tops, and core pipe 6 connects lower chamber and hydraulic fluid port A9, and hydraulic fluid port A9 is together with upper cavity.Cylinder piston rod 5 multiplex solid first steel are now used thick-wall seamless instead, have strengthened the moment of torsion of piston rod 5 under the prerequisite that guarantees strength on its top.The moment of torsion bending of weldless tube is greater than unidimensional first steel theoretically, and oil inlet and outlet is placed on the bending that same position has reduced sebific duct in addition, has increased the working life of oil pipe.The utility model has changed the position of conventional oil cylinder turnover oil cylinder 3, when jack-up system uses, jacking promotes oil hydraulic cylinder hydraulic fluid port B9 on the hydraulic power unit of large chamber, and hydraulic oil enters the cylinder barrel 3 that large chamber pushing piston 2 allows piston rod 5 stretch out oil cylinder by core pipe 6 and finishes jacking work.The hydraulic oil of hydraulic station enters the inside of piston rod 5 from hydraulic fluid port B10 when regaining piston rod 5, retreats by piston and enters cylinder barrel and regain piston rod 5 thereby hydraulic oil enters rod chamber through spacer ring 4, and so the flexible work of jacking of hydraulic jack is finished in cycle operation.

Claims

1. large-tonnage oil cylinder, comprise cylinder bottom (1), piston (2), cylinder barrel (3), spacer ring (4), piston rod (5), core pipe (6), be provided with through hole on the cylinder barrel (3) and cylinder bottom (1) closely cooperates, guide sleeve (7) is arranged on the other end of through hole, and the flange of oil cylinder (8) is located, piston rod (5) is linked in the cylinder barrel (3) by guide sleeve (7), with cylinder barrel (3), the seal chamber that cylinder bottom (1) and guide sleeve (7) surround is divided into upper cavity and lower chamber, it is characterized in that hydraulic fluid port A(9) and hydraulic fluid port B(10) all be arranged on piston rod (5) top, core pipe (6) connects lower chamber and hydraulic fluid port A(9).

2. a kind of large-tonnage oil cylinder according to claim 1 is characterized in that: described piston rod (5) employing thick-wall seamless.