CN1013146B

CN1013146B - Bellows

Info

Publication number: CN1013146B
Application number: CN 88100620
Authority: CN
Inventors: 吴建
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-02-12
Filing date: 1988-02-12
Publication date: 1991-07-10
Also published as: CN1035168A

Abstract

A kind of bellows, the upper and lower folding that is characterised in that ripple is a dissymmetrical structure, last folding is longer than down folding.Following plane of rupture is the three bent arcs that are the W shape.Last plane of rupture is curved.Upper and lower folding constitutes stable structural support, can keep bellows stablizing at elongation and contraction terminal point under no external force effect.Can make the long-pending container of transfiguration with the design.

Description

Bellows

The container that present design belongs to the flexible pipe with bellows wall and adopts this tube wall to make.

The flexible pipe that has bellows wall, an effect of its bellows wall is to make pipe range scalable, caliber is flexible.But the ripple of present flexible bellow is rolled over up and down and is symmetry shape, and it stretches or bent state will rely on external force to keep, and is very inconvenient in the use, can not be used for making the long-pending container of transfiguration.

The design's purpose is to propose a kind of new bellows wall construction, the bellows that adopts this structure in elongation, shorten or disobey outer power when crooked and can keep stable working state.

The design's content is the ripple tube wall of cross-join to be rolled over up and down be symplex structure.Rolling over intersection point to endpoint line distance up and down is to go up folding greater than rolling over down.All on intersection point or endpoint line, intersection point straight line and endpoint line are parallel to each other for some intersection points or end points.Last plane of rupture can be that straight line also can be a camber line.When being camber line, radius is R, and string is in following folding one side that is connected by intersection point.Following plane of rupture is the three bent camber lines that are the W shape, and the radius of its three sections camber lines is respectively R1, R2, R3.The relation of R and R1, R2, R3 is: R＞R1, R＞R2, R＞R3, the relation of R1, R2, R3 can be unequal, also can be R1=R3, R2

R1; Can also be R1=R2=R3.Angle α between the upper and lower folding, the straight line vertical with intersection point on line or end points on line are divided into above folding with α and are one side α ₁With following folding be on one side α ₂, because go up the crow flight distance that folding is longer than down folding, so α ₁＞α ₂, but α 1＜2 α ₂Can obtain bigger magnification, flexible be by upper and lower folding separately and close up realization, ° can conveniently realize stretching in α＜90.The upper and lower folding of the design's ripple constitutes a kind of stable structural support when elongating or shortening to terminal.

The design's substantive distinguishing features is that the dissymmetrical structure and the following folding of the upper and lower folding of ripple is W shape three bent camber lines, makes down folding all have supporting effect when the final position of extending or shrinking; Can be under no external force effect hold mode stable.

The design's advantage is can make bellows keep elongation without external force, shortens or bending, i.e. the steady state that side elongation opposite side shortens makes bellows be applicable to the operating conditions of some specific (special) requirements.Particularly adopt this bellows can make the long-pending container of transfiguration.

The design's embodiment is as shown in drawings:

Fig. 1 is the schematic representation that adopts the design's bellows.

Fig. 2, the 3rd, the upper and lower folding wall of the design's bellows sectional schematic diagram.

Fig. 4-the 9th, employing the design's various tube section shapes.

Figure 10 is the long-pending container schematic representation of transfiguration that adopts the design to make.

Last folding wall 1, following folding wall 2, upper and lower folding wall intersection point A, following folding wall terminal B, on roll over wall end points C, on roll over wall angle α 1, following folding wall angle α 2.

In conjunction with the accompanying drawings and embodiments the design is described further:

Present embodiment is a kind of embodiment that is used for caliber 60-90mm.Last folding is than the diameter distance 1-3mm that rolls over down, R=50-80mm, R1=R2=R3=15-25mm.In above-mentioned scope, can select R=65mm, R1=20mm, α is convenient to stretch less than 90 °, can adopt α ₁=40 °, α ₂=24 °, α=64 ° then.External diameter of pipe A-A=82mm, bore B-B=C-C=64mm.

Fig. 1 is the schematic appearance that the design's bellows is in elongation state.Fig. 2 is the figure that cuts open that demonstrates the ripple section.When ripple is in the steady state of upholding or shrinking, on roll over curved being bent downwardly, three bent arcs of following folding are rolled on upper support.Must overcome the elasticity of each arc material if shrink ripple this moment, and for example with external force pressure folding R1, R2 or R3 down, camber line makes down folding crow flight distance be not more than by α summit to bottom line could be realized when being the length of end points connection straight line.Perhaps, make its reverse warpage with folding and camber line on the external force pressure.The arc length of expanding R1, R2, R3 simultaneously makes its straight line total length greater than last folding length, and this situation more is difficult to realize.When bellows is in contraction state with the situation of its elongation similarly.Therefore, under the situation of no external force, when no matter bellows is in the elongation or the terminal state of contraction, all be stable.

Adopt present design manufacturing bellows to select for use and have certain flexible material, for example plastics, rubber or the like.The design is applicable to the bellows of the various bores of various sectional shapes, and the drift angle in cross section is advisable with arc, and specific design can have triangle, quadrilateral, pentagon or arbitrary polygon shown in accompanying drawing 4-9.Adopt present design can make the long-pending container of transfiguration.Its method is that the other end can make various forms of vessel port as required and can finish with the sealing of bellows one end.

Claims

1, a kind of bellows, have and roll on some parallel tube walls and roll over down with the tube wall of last folding cross-join, upper and lower folding is a dissymmetrical structure, upper and lower folding intersection point to endpoint line distance is to go up folding greater than rolling over down, the straight line that some intersection points connect is parallel to each other with the straight line that some end points connect, and it is characterized in that plane of rupture is the three bent arcuate structures that are W shape down.

2,, it is characterized in that folding is that radius is the arc of R, three sections arc radius R1=R3 of following folding, and R＞R1 according to the described bellows of claim 1.

3,, it is characterized in that folding is that radius is the arc of R, three sections arc radius R1=R3 of following folding, and R＞R2 according to the described bellows of claim 1.

4,, it is characterized in that folding is that radius is the arc of R, three sections arc radius R1=R2=R3 of following folding, and R＞R1 according to the described bellows of claim 1.

5,, it is characterized in that folding and roll over angle α down that it is that above folding is α on one side that the straight line vertical with intersection point on line or end points on line divides α according to the described bellows of claim 1 ₁With following folding be on one side α ₂, α ₁＜2 α ₂

6,, it is characterized in that α＜90 ° according to the described bellows of claim 5.

7,, it is characterized in that folding and the following intersection point of rolling over are 1-3mm to the difference of the crow flight distance of end points, R=50-80mm, R1=R2=R3=15-25mm according to the described bellows of claim 4.

8, according to the described bellows of claim 6, it is characterized in that R=65mm, R1=20mm, α ₁=40 °, α ₂=24 °, caliber is 82mm/64mm.

9,, it is characterized in that the bellows cross section is that drift angle is triangle, quadrilateral or the arbitrary polygon of arc according to claim 1,2,3,4,5,6,7 or 8 described bellowss.

10, according to the described bellows of claim 9, it is characterized in that the sealing of bellows one end, become scalable container.