CN1306163A

CN1306163A - Connection mode of inserted-in key block

Info

Publication number: CN1306163A
Application number: CN 00101462
Authority: CN
Inventors: 左学禹
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-01-20
Filing date: 2000-01-20
Publication date: 2001-08-01
Anticipated expiration: 2020-01-20
Also published as: CN1128298C

Abstract

A method for linking two axle part with inserted-in key block features that an axle part with slor ring on its external surface and another axle with slot ring on the internal surface of its tubular end are fit, two slot rings constitute a ring space, a window is made at the position of said tubular end, which is correspondent to said slot ring, a key block is inserted in said ring space via said window, and the window is closed by a cover plate. Its advantages are high concentric level, compact structure and relative rotation between both axles with proper axial displacement.

Description

A kind of connection mode of inserted-in key block

The present invention relates to a kind of connection mode of inserted-in key block.Belong to the mechanical structure technical field.

The axle with spool the modes such as singly-bound is connected, the connection of two key, spline connection, flange connection that are connected with.But key connects transmitting torque, but can not transmit axial force; Can realize limited axial relative displacement, but can not relatively rotate.But flange connects transmitting torque and axial force, but can not realize that diaxon relatively rotates and displacement to axial.The connection of some member needs two members to relatively rotate, and can bear axial force again, can also realize limited axial relative displacement, and satisfies the coaxality requirement of regulation.For example flap and valve rod is connected.Placement commonly used has that the "T"-shaped groove of opening connects, the "T"-shaped groove of remaining silent connects, is threaded etc.Opening "T"-shaped groove Placement valve rod and flap coaxality are difficult to guarantee that valve is easily interior to be leaked.The "T"-shaped groove Placement structural volume of remaining silent is bigger, is not suitable for smaller diameter valve.Thread connecting mode rubs when sealing surface contacts relatively, and sealing surface is damaged.Valve body with adopt modes such as flange connects, is threaded, clamp connection being connected of valve gap usually.These Placement coaxalitys are all relatively poor.

The purpose of this invention is to provide a kind of novel Placement---connection mode of inserted-in key block.This Placement can satisfy two coaxality requirements that member is higher, can realize relatively rotating and limited axial relative displacement simultaneously, and can bear bigger axial force, and structure is also compact.This Placement is applicable to that being connected of valve rod and flap, valve body are connected with valve gap, and other have the connection of the member of certain specific (special) requirements.

The object of the present invention is achieved like this: open in the outside of an end of an axle spare one with the perpendicular circular groove of axis, also open in the inboard of an end of another part or pipe fitting one with the perpendicular circular groove of axis.When axle spare inserted tubulose one end of another part that matches with it, the circular groove on two axle spares can form the annular space of a sealing.The outside at the axle part tubular tip that has the interior annular groove has one or more " windows " that are connected with circular groove.The key piece that other has a plurality of annular spaces that form with diaxon spare to match can insert in the annular space by " window ", or take out from annular space.The shape of key piece can be some/one of the entity that matches with annular space, also can be some cylindrical bodys or the spheroid that matches with the annular space cross section.Each " window " all is furnished with a cover plate, and when it covered " window ", the circular groove on two axle spares just formed the annular space of a sealing.The width of the inside-and-outside ring groove on two axle spares can equate, also can be unequal.When the width of two circular grooves was unequal, the width of key piece matched with a narrower circular groove.This Placement allows two axle spares that a certain amount of relative displacement is arranged vertically, and its displacement amount is not more than the poor of inside-and-outside ring well width.The degree of depth of the inside-and-outside ring groove on two axle spares can equate, also can be unequal.The axle part that has tubular tip, the degree of depth of its interior annular groove can be zero.This part tubular tip has " window " of two or more symmetrical distributions corresponding to the position of exterior annular groove on another part that matches with it, and the key piece is fixed in " window ", and inserts in the circular groove of another part.These " windows " can a public ring set shape cover plate.

The present invention is because can select the matching gap of diaxon spare by the coaxality requirement of design, so this Placement can satisfy two coaxality requirements that axle spare is higher.Because two circular grooves are all perpendicular with axis, the key piece places circular groove again, and circular groove and key piece size can determine by designing requirement, so diaxon spare can relatively rotate around axis, and can bear bigger axial force.The key piece can be made cylindrical body or spheroid, and frictional force was very little when diaxon spare relatively rotated like this.In addition, because the width of two circular grooves can be unequal, therefore, diaxon spare can have certain relative displacement vertically.This connection does not need flange, part that the bolt equal-volume is bigger, thereby its structure is compact.In sum, connection mode of inserted-in key block has some characteristics different with other Placements, and it can satisfy the specific (special) requirements that some members connect.

Concrete structure of the present invention is provided by following embodiment and accompanying drawing thereof, and it is not as a limitation of the invention.

Fig. 1 is the sectional drawing of a kind of structure of proposition according to the present invention.

Fig. 2 is the A-A sectional view of Fig. 1.

Fig. 3 is that the K of Fig. 1 is to view.

Fig. 4 is the sectional drawing of the another kind of structure of proposition according to the present invention.

Fig. 5 is the B-B sectional view of Fig. 4.

Describe the details and the working condition of the concrete structure that proposes according to the present invention in detail below in conjunction with accompanying drawing.

The structure of Fig. 1 is suitable for being connected of valve body and valve gap, and need bear larger axis to power, and coaxality two pipe fittings of having relatively high expectations or the connection of axle part.Have the axle part (1) of exterior annular groove (3), insert in the axle part (2) that has interior annular groove (4).Axle part (1) cooperates for being rotatably assorted with axle part (2).Circular groove (3) equates with the width of (4), their alignment when mounted.The outside at the tubular tip of axle spare (2) with its interior annular groove corresponding section, has the width of one or two length greater than circular groove, and width is greater than the long-round-shape through hole of the big head width of key piece, and shape such as window are referred to as " window " (6).Some/one of the ring bodies that the annular space that the shape of key piece (5) is with the inside-and-outside ring groove forms matches.The key block size of present embodiment is ten sixths of getting ring bodies.Key piece (5) block-by-block is inserted the annular space that is formed by circular groove (3) and (4) from " window " (6), stir the key piece while inserting or a part (1) and (2) are relatively rotated, till sticking with annular space.With cover plate (7) " window " (6) are covered.The shape of cover plate matches with " window ", and its thickness is identical with the tubular tip wall thickness of axle part (2).It is identical with the tubular tip interior annular groove of axle part (2) that its inboard has, and the groove that connects of kissing.When cover plate (7) covered " window " (6), the groove of cover plate inboard just matched with the key piece.Have screw hole (10) up and down at " window ", cover plate (7) is fixed in " window " (6) with pressing plate (8) and screw (9).As required, axle part (1), (2) and key piece (5), cover plate (6) etc., available carbon steel, alloyed steel, stainless steel and nonmetallic material manufacturing.

The structure of Fig. 4 is suitable for being connected of valve rod and flap, and does not bear larger axis to power, or has only the unidirectional larger axis that bears to power, and diaxon spare can relatively rotate, and its coaxality requires the connection of higher again diaxon spare.Valve rod head (11) is rotatably assorted with flap (12) inner chamber.The valve rod head has exterior annular groove (14) and central socket (19).The flap sidewall has 4 circle hole shapes " window " (15) that symmetry is uniform.The diameter of " window " (15) is slightly less than the width of circular groove (14).4 spherical key pieces (16) insert respectively in 4 " window " (15), and contact with circular groove (14).The degree of depth of " window " (15) and circular groove (14) equals the radius of spherical key piece (16) respectively.The sectional shape of circular groove is surrounded by two circular arc lines and its common tangent section.Its circular arc line radius equates with spherical key piece (16) radius.Ring set female cap plate (13) is rotatably assorted with flap (12), pays (18) by screw thread and is connected, and just 4 " window " (15) are covered simultaneously.Steel ball (17) places between valve rod central socket (19) and the flap inner chamber bottom surface, transmits the axial force of valve rod to flap, but does not transmit torsional moment.As required, valve rod, flap can be made with materials such as alloyed steel, stainless steels.Steel ball can be made with materials such as Bearing Steels.For improving anti-bonding property under wear resistance and the high temperature, can be at the above-mentioned surface plating of part in addition one deck cemented carbide.

Claims

1. connection mode of inserted-in key block, realize by members such as two axle spares and key pieces, it is characterized in that: the end outside of axle part (1) have one with the perpendicular circular groove (3) of axis, the axle part (2) the tubular tip inboard also have one with the perpendicular circular groove (4) of axis, when axle spare (1) inserts the tubular tip of the axle part (2) that matches with it, circular groove on two axle spares forms the annular space of a sealing, the tubular tip outside at axle spare (2), have one or more " window " (6) that are connected with circular groove, other has a plurality of key pieces (5) that match with annular space, can insert in the annular space by " window " (6), or from annular space, take out, the shape of key piece (5) is some/one of the entity that matches with annular space, and each " window " all is furnished with a cover plate (7).

2. connection mode of inserted-in key block according to claim 1 is characterized in that: the shape of key piece (5) is the entity of the some cylindrical bodys, spheroid or other shapes that match with the annular space cross section.

3. connection mode of inserted-in key block according to claim 1 is characterized in that: the width of the circular groove on two axle spares is unequal, and a narrower circular groove of key piece (5) and width matches.

4. connection mode of inserted-in key block according to claim 1 is characterized in that: the degree of depth of the circular groove on two axle spares is unequal, and wherein the degree of depth of a circular groove can be zero.

5. connection mode of inserted-in key block according to claim 4, it is characterized in that: a plurality of key pieces (16) place " window " (15) of matching with it respectively, and insert in the circular groove (14) of another part relative with " window ", these " windows " and key piece can be covered simultaneously with a ring set female cap plate (13).