CN2863370Y

CN2863370Y - Sealing element mounting tools

Info

Publication number: CN2863370Y
Application number: CNU2005200479489U
Authority: CN
Inventors: 钱标
Original assignee: Shanghai Waigaoqiao Shipbuilding Co Ltd
Current assignee: Shanghai Waigaoqiao Shipbuilding Co Ltd
Priority date: 2005-12-23
Filing date: 2005-12-23
Publication date: 2007-01-31
Anticipated expiration: 2015-12-23

Abstract

The utility model relates to a sealing member overall, in particular to a piston ring sealing member mounting tool, including a transient sleeve, an elastic thruster, a spigot shaft, and an O-shaped ring. The transient sleeve has been designed with a taper cylinder-bed shape, wherein the edge of the big end surface gets to the groove of the seal ring and the small end, which is smaller than the original inner ring of the seal ring and has a smooth surface and is provided with a spigot shaft. The dimension difference between the excircle diameter of the elastic thruster and the piston is not greater than 0.5 mm, the excircle cylinder is an elastic body with a plurality of continuous mangers and a centering hole is provided on the caudal end of the excircle cylinder. The utility model overcomes the shortcomings in present technique that t manipulators can only install the utility model by using bare hands and unable to guarantee the reliability; and the utility model has the advantages of easy operating, excellent installing quality, reduced consumption of seal members and the production cost.

Description

A kind of seal erecting tools

Technical field

The utility model relates to a kind of seal frock, relates in particular to a kind of seal erecting tools that is used for piston ring.

Background technology

At present, hydraulic technique has been widely used in the industries such as engineering, lifting, boats and ships.Especially large-scale pneumatic system, hydraulic test technology are more advanced, and the seal that is used for oil cylinder piston and piston rod adopts that lattice enclose, this special envelope co-axial seal more.In maintenance process, the installation quality that plaid matching encloses is directly connected to the service efficiency and the maintenance cycle of equipment.It is by wear-resisting and elasticity is relatively poor and triumphant material filled polytetrafluoroethylene adds bronze powder and makes that lattice enclose, axiality requires very high, very easily damage or cause permanent irregular deformation with traditional hand assembled, damaged when often just having entered oil cylinder or entered and also reduced sealing effectiveness, device efficiency is descended.

Summary of the invention

The technical problems to be solved in the utility model is at the seal of present large hydraulic equipment piston ring shortcoming not in place to be installed, and operating personnel's hand assembled is not again very convenient, so cause seal to damage or the reduction sealing effectiveness, influence the problem of equipment operating efficiency.

In order to solve the problems of the technologies described above, the utility model has been taked following technical scheme:

Seal erecting tools of the present utility model, comprise a transition axle sleeve and an elasticity propeller, described transition axle sleeve is the truncated conical shape design with tapering, holds end face edge to arrive the groove of sealing ring greatly, small end is less than the original inner ring of sealing ring, and smooth surface; The difference of described elasticity propeller outside diameter and piston external diameter is not more than the elastomer that 0.5mm, external cylindrical surface have several grooves.

The big end end face internal diameter and the piston diameter of described transition axle sleeve match, and cylindrical is the smooth taper surface that gradient is about 5 degree, holds the inner face edge just in time to reach the seal groove edge greatly; Small end is furnished with centering spindle; The length of transition axle sleeve is that sealing ring can be inserted in small end 10-20mm when nature, is inserted in the thick 0.5mm of being about of end wall.

The angle of rake import internal diameter of described elasticity is between transition axle sleeve size end; The about 2mm of wall thickness; Have the groove of several width 3-4mm on the external cylindrical surface; The angle of rake promotion length of elasticity is equal to the length of transition axle sleeve; Tail end has the core of deciding hole, and the centering spindle that decides core aperture and transition axle sleeve matches.

The utility model has overcome deficiency of the prior art, changed the situation that operator in the present prior art can only pure hand assembled can't guarantee installation reliability, have characteristics easy and simple to handle, that installation quality puts in place, be that the manual institute of directly assembling is inaccessiable, so adopting a cover transition axle sleeve to add the resiliency urged device, this seal erecting tools come positioning control that the method for sealing ring originally was installed by range estimation, optimize installation quality greatly, reduced the consumption of seal, reduced production cost.

Description of drawings

Fig. 1 is the complete section figure of transition axle sleeve of the present utility model

Fig. 2 is the angle of rake figure that partly cuts open of elasticity of the present utility model

Fig. 3 is the state diagram of installing and using of the present utility model

The specific embodiment

Below in conjunction with accompanying drawing and the specific embodiment the utility model is done and to be described in further detail.As shown in Figure 3, the utility model seal erecting tools of being used for piston ring comprises: transition axle sleeve 1, elasticity propeller 2, centering spindle 3 and O shape circle 6.

It is by wear-resisting and elasticity is relatively poor and triumphant material filled polytetrafluoroethylene adds bronze powder and makes that lattice enclose 4, has extremely low coefficient of friction and self-lubricating property, and the starting friction resistance is little, does not have creeping phenomenon during utmost point low-speed motion, has more advantage.But the installation requirement that lattice enclose is higher, because manufactured materials lacks flexibility performance, cannot stand and pull, do not have very difficulty of specific purpose tool fitting operation, very easily cause lattice to enclose 4 damage when only installing with general tool is manual, or the generation plastic deformation, lose circle and lose sealing property.When maintenance and installation, often the someone uses copper sheet lining or simple and easy tapered sleeve, but all can not guarantee the reliability of installation quality, and operation is also inconvenient.Always finding that many lattice enclose gross distortion, damaged in maintenance, obviously is because the defective that causes not in place is installed.

Lattice enclose the position that groove 5 is a groove.

Implementation step is specially:

1. make transition axle sleeve 1 according to the diameter of piston.As Fig. 1, the big end end face internal diameter and the piston diameter of transition axle sleeve 1 match, and cylindrical is the smooth taper surface that gradient is about 5 degree, holds the inner face edge just in time to reach sealing ring 4 groove edge greatly; Small end is furnished with centering spindle 3; The length of transition axle sleeve 1 is that sealing ring 4 can be inserted in small end 10-20mm and is advisable when nature, is inserted in the thick 0.5mm of being about of end wall, and blocked up easy plaid matching encloses 4 and causes damage, and guarantees good axiality.

2. make elasticity propeller 2.As Fig. 2, the import internal diameter of elasticity propeller 2 is between transition axle sleeve size end; The about 2mm of wall thickness; Have the groove 5 of several width 3-4mm on the external cylindrical surface, be convenient to open; The promotion length of elasticity propeller 2 is equal to the length of excessive axle sleeve 1, to reach lattice is enclosed 4 one effects of shifting end low water onto; Tail end has the core of deciding hole, and the centering spindle 3 of size and transition axle sleeve matches, and guarantees the axiality of elasticity propeller 2 and transition axle sleeve 1.

3. the lattice installation of enclosing: as Fig. 3

1) workpiece and erecting tools remove clean burr, dust, greasy dirt etc., guarantee clean, smooth;

2) O shape caoutchouc elasticity circle 6 is packed in advance in 5 ends of the groove footpaths;

3) transition axle sleeve 1 is enclosed within on the piston, and guarantees to have good axiality, make the big end end face edge of axle sleeve reach lattice and enclose groove 5 edge;

4) be coated with the taper seat of full transition axle sleeve 1 with cleaning hydraulic oil, lattice are enclosed 4 covers in the above;

5) elasticity propeller 2 is set on the transition axle sleeve 1 by centering spindle 3, and pushes ahead, touch and make lattice enclose 4 just just to push away;

6) directly push away elasticity propeller 2 fast, lattice enclose 4 and evenly open along smooth transition axle sleeve 1 outer circumference surface, and the back lattice that promote to put in place enclose 4 low waters 5 at the sound;

7) after lattice enclose 4 arrival groove positions and spring in the groove, take sealing part erecting tools away, this that will have an otch encloses and installs to the position, assembles piston then and in time puts into hydraulic cylinder, makes lattice enclose 4 issuable a little inhomogeneous mistake circularity and in time obtains correcting.

Above-mentioned seal erecting tools is also applicable to this special envelope and other types seal of installing on the piston.Easy and simple to handle, the more important thing is and guaranteed installation quality.

Claims

1. seal erecting tools, it is characterized in that, described seal erecting tools comprises: transition axle sleeve (1), elasticity propeller (2), centering spindle (3) and O shape circle (6), described transition axle sleeve (1) is the truncated conical shape with tapering, big end end face edge arrives the groove (5) of sealing ring, small end is less than the original inner ring of sealing ring (4), and smooth surface, and small end is furnished with centering spindle (3); The difference of described elasticity propeller (2) outside diameter and piston external diameter is not more than the elastomer that 0.5mm, external cylindrical surface have several grooves, and tail end has the core of deciding hole.

2. seal erecting tools as claimed in claim 1 is characterized in that, the big end end face internal diameter and the piston diameter of described transition axle sleeve (1) match, and holds the inner face edge just in time to reach o-ring groove (5) edge greatly; The length of transition axle sleeve (1) is that sealing ring (4) can be inserted in small end 10-20mm when nature.

3. seal erecting tools as claimed in claim 1 is characterized in that, the import internal diameter of described elasticity propeller (2) is between the big small end of transition axle sleeve (1); Have several grooves on the external cylindrical surface; The promotion length of elasticity propeller (2) is equal to the length of transition axle sleeve (1); The centering spindle (3) that decides core aperture and transition axle sleeve (1) matches.

4. seal erecting tools as claimed in claim 1 is characterized in that, described transition axle sleeve (1) cylindrical is that gradient is the smooth taper surface of 5 degree.