CN208470127U - High speed ejection buffer unit - Google Patents

Abstract

The utility model proposes a kind of high speed ejection buffer units, after projectile high speed ejection is gone out, drag rope drives rotary shaft rotation, travelling nut relative limit slot axially movable, squeezes spring, spring and then pressing friction piece group, to by way of friction work, interior energy is converted by the kinetic energy of projectile itself to dissipate, and is made impact force is soft to slow down, effectively rope is avoided to snap；Frictional force, which may be implemented, in the high speed ejection buffer unit kind of drive of the utility model starts from scratch and is gradually increased until spring kills completely, and frictional force reaches peak, automatically adjusts frictional force；Cable winding drum is set, and figure of eight winding mode is securely fixed rope using the frictional force between rope and rope, rope and roll and rotary shaft, so that terminal solidus mode is reliable；In rotary shaft nesting collector ring, rotary shaft is prevented when rotating at high speed, the signal wire inside rope winds chaotic.

Description

High speed ejection buffer unit

Technical field

The utility model relates to buffer unit more particularly to a kind of high speed ejection buffer units.

Background technique

Delayed between the projectile and pedestal that ejection or aerospace field, high speed ejection go out by connecting rope It rushes and slows down.In actual use, due to projectile excessive velocities, it is easy the rope that snaps.

Utility model content

In view of this, the utility model proposes a kind of high speed ejection buffer units that can effectively avoid rope from snapping.

The technical solution of the utility model is achieved in that the utility model provides a kind of high speed ejection buffering dress It sets comprising rope (1) further includes pedestal (2), rotary shaft (3), sleeve (4), several first friction plates (5), several second rubs Pad (6), limiting slot (7), travelling nut (8) and spring (9), rotary shaft (3) are rotatably connected with pedestal (2), travelling nut (8) it being rotatably connected with rotary shaft (3) and slides axially with limiting slot (7) and connect, limiting slot (7) is fixed on pedestal (2), First friction plate (5) and the second friction plate (6) are successively staggered to form friction plate group and be nested on rotary shaft (3), sleeve (4) it is axially fixed on pedestal (2) and is nested on the outside of friction plate group, rotary shaft (3) surface is axially disposed spline (31), fluted (51) are arranged in the first friction plate (5) inner peripheral surface, and spline (31) is embedded in groove (51), the second friction plate (6) Outer peripheral surface is provided with fin (61), and sleeve (4) inner wall surface is axially disposed to be had sliding slot (41), and fin (61) is embedded in sliding slot (41) in, spring (9) is nested on rotary shaft (3) and both ends support travelling nut (8) and friction plate group, rope (1) one respectively End is fixedly connected with rotary shaft (3), other end connection projectile.

On the basis of above technical scheme, it is preferred that opened along axial 90 ° of rotational symmetry on travelling nut (8) surface If limiting slot (7) includes four shift forks (71) there are four sliding groove (81), each shift fork (71) include a fixed column (711) and One limited post (712), limited post (712) is vertical with fixed column (711) fixed and axially disposed, four limited posts (712) point It Qian Ru not four sliding grooves (81).It is further preferred that the travelling nut (8) further includes gasket (82), limiting slot (7) is also wrapped It includes fixed ring (72), fixed ring (72) is fixed on four fixed column (711) end faces, and gasket (82) is fixed on travelling nut (8) end Face and part cover four fixed column (711) end faces, and rotary shaft (3) passes through gasket (82).

On the basis of above technical scheme, it is preferred that pedestal (2) further includes three fixing seats (21), three fixing seats (21) it is set on same straight line, rotary shaft (3) sequentially passes through three fixing seats (21) and bearing connects therewith respectively.

On the basis of above technical scheme, it is preferred that further include cable winding drum (10), cable winding drum (10) includes reel Ontology (101) and two stop collars (102), spool body (101) is nested and is fixed on rotary shaft (3), two stop collars (102) point It is not extended outwardly by spool body (101) both ends, rope (1) is wrapped in spool body (101) surface.Further preferably , cable winding drum (10) further includes two rolls (103), offers through-hole (104), two coilings on spool body (101) end face Axis (103) is axially fixed on spool body (101) end face, and rope (1) is between two rolls (103) and rotary shaft (3) It is fastened in the figure of eight, is then passed through through-hole (104).It still more preferably, further include clip (11), clip (11) is fixed It is set on rotary shaft (3), rope (1) one end is fixed on clip (11), in two rolls (103) and rotary shaft after extraction (3) it is wound between in the figure of eight.It is further preferred that further including collector ring (40), collector ring (40) is nested in rotary shaft (3) Between pedestal (2), rotary shaft (3) offers inlet wire slot (32) close to the surface of clip (11), rotary shaft (3) along axial direction from into Wire casing (32) offers line outlet groove (33) to end face, and signal wire is coated with inside rope (1), and rope (1) is fixed by clip (11) One end sequentially pass through inlet wire slot (32) and line outlet groove (33) after be fixedly connected collector ring (40), cord outside is from line outlet groove (33) It connects collector ring (40).It is further preferred that further including support frame (20) and unwrapping wire reel (30), support frame (20) fixed setting In pedestal (2) surface, unwrapping wire reel (30) is rotatably connected with support frame (20) and face cable winding drum (10) is arranged, rope (1) spool body (101) is wrapped in draw afterwards and pass through cable winding drum (10) connection projectile.

The high speed ejection buffer unit of the utility model has the advantages that compared with the existing technology

(1) pass through setting pedestal, rotary shaft, sleeve, several first friction plates, several second friction plates, limiting slot, movement Nut and spring, after projectile high speed ejection is gone out, drag rope drives rotary shaft rotation, travelling nut relative limit slot edge It is axially moved, squeezes spring, spring and then pressing friction piece group, thus by way of friction work, by projectile itself Kinetic energy is converted into interior energy and dissipates, and makes impact force is soft to slow down, effectively rope is avoided to snap；

(2) the high speed ejection buffer unit kind of drive of the utility model may be implemented frictional force and start from scratch to be gradually increased Until spring kills completely, frictional force reaches peak, automatically adjusts frictional force；

(3) cable winding drum is set, figure of eight winding mode, using rope and rope, rope and roll and rotary shaft it Between frictional force, rope is securely fixed, so that terminal solidus mode is reliable；

(4) in rotary shaft nesting collector ring, rotary shaft is prevented when rotating at high speed, the signal wire winding inside rope is mixed Disorderly.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the perspective view of the high speed ejection buffer unit of the utility model；

Fig. 2 is the top view of the high speed ejection buffer unit of the utility model；

Fig. 3 is the cross-sectional view in the direction A-A in Fig. 2；

Fig. 4 is the perspective view of sleeve；

Fig. 5 is the front view of the first friction plate；

Fig. 6 is the front view of the second friction plate；

Fig. 7 is the perspective view of limiting slot, travelling nut part；

Fig. 8 is the perspective view of rotary shaft；

Fig. 9 is the perspective view of cable winding drum.

Specific embodiment

Below in conjunction with the attached drawing in the utility model embodiment, to the technical solution in the utility model embodiment It being clearly and completely described, it is clear that described embodiment is only a part of embodiment of the utility model, without It is whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creation Property labour under the premise of every other embodiment obtained, fall within the protection scope of the utility model.

As shown in Figure 1, in conjunction with Fig. 2 and Fig. 3, the high speed ejection buffer unit of the utility model comprising rope 1, pedestal 2, rotary shaft 3, sleeve 4, several first friction plates 5, several second friction plates 6, limiting slot 7, travelling nut 8, spring 9, coiling Reel 10, clip 11, support frame 20, unwrapping wire reel 30 and collector ring 40.

Rope 1 is fixed with rotary shaft 3 and projectile respectively, when in projectile high speed ejection out, drives 3 turns of rotary shaft It is dynamic.

Wherein, pedestal 2 plays the role of fixed support, is generally positioned on ejection parent object, in order to stablize support rotation Shaft 3, pedestal 2 include three fixing seats 21, and three fixing seats 21 are set on same straight line, and rotary shaft 3 sequentially passes through three It fixing seat 21 and is rotatably connected therewith respectively.

Rotary shaft 3, as shown in figure 8, being driven under the action of rope 1, driving travelling nut 8 is axially moved.Specifically, moving Dynamic nut 8, which is rotatably connected with rotary shaft 3 and slides axially with limiting slot 7, to be connect.As shown in fig. 7, travelling nut 8 can be used Square nut, surface open up that there are four sliding grooves 81 along axial 90 ° of rotational symmetry, and corresponding, limiting slot 7 includes four shift forks 71, each shift fork 71 includes a fixed column 711 and a limited post 712, and limited post 712 is vertical with fixed column 711 fixed and along axis To setting, four limited posts 712 are respectively embedded into four sliding grooves 81.In this way, in 3 rotation process of rotary shaft, travelling nut 8 by The limit of limiting slot 7, can only be axially movable.7 one end of limiting slot is fixedly installed on 21 surface of fixing seat, in order to improve its stabilization Property, limiting slot 7 further includes fixed ring 72, and fixed ring 72 is fixed on four 711 end faces of fixed column.Travelling nut axially movable 8 extruding or pull-off spring 9, in order to facilitate the installation of, the travelling nut 8 further includes gasket 82, and gasket 82 is fixed on mobile spiral shell Female 8 end faces and part cover four 711 end faces of fixed column, and rotary shaft 3 passes through gasket 82, in this way, spring 9 can be supported directly 82 surface of gasket.

Axial compressive force is transmitted to 6 part of the first friction plate 5 and the second friction plate by spring 9, is consumed by rubbing action dynamic Energy.Specifically, as shown in figures 4-6, the first friction plate 5 is successively staggered to form friction plate group and nested with the second friction plate 6 In rotary shaft 3, sleeve 4 is axially fixed on pedestal 2 and is nested on the outside of friction plate group, and 3 surface of rotary shaft is set along axial direction It is equipped with spline 31,5 inner peripheral surface of the first friction plate setting fluted 51, spline 31 is embedded in groove 51,6 outer ring of the second friction plate Surface is provided with fin 61, and 4 inner wall surface of sleeve is axially disposed sliding slot 41, and fin 61 is embedded in sliding slot 41, and spring 9 is nested In rotary shaft 3 and both ends support gasket 82 and friction plate group surface respectively.In this way, the first friction plate 5 is rotated with rotary shaft 3, Pressing friction piece group after spring 9 is under pressure, the first friction plate 5 and the second friction plate 6 consume kinetic energy under rubbing action.

As winding portion, as shown in figure 9, cable winding drum 10 includes spool body 101 and two stop collars 102, reel sheet Body 101 is nested and is fixed in rotary shaft 3, and two stop collars 102 are extended outwardly by 101 both ends of spool body respectively, rope Rope 1 is wrapped in 101 surface of spool body.In this way, rope 1 when by projectile high speed ejection and out, drives spool body 101 Rotation, and then rotary shaft 3 is driven to rotate.In order to fix rope 1, cable winding drum 10 further includes two rolls 103, spool body Through-hole 104 is offered on 101 end faces, two rolls 103 are axially fixed on 101 end face of spool body, and rope 1 is in two coilings It is fastened between axis 103 and rotary shaft 3 in the figure of eight, is then passed through through-hole 104.It is proved through field test, this figure of eight The mode being fastened can effectively buffer kinetic energy, prevent the fixation position of rope 1 from snapping.Rope 1 is in two rolls It is fixed in a manner of it can use and knot after figure of eight winding between 103 and rotary shaft 3, it is preferred that it further include clip 11, folder Son 11 is fixedly installed in rotary shaft 3, and 1 one end of rope is fixed on clip 11, in two rolls 103 and rotary shaft 3 after extraction Between in the figure of eight wind.

In reality, the inside of rope 1 is generally coated with signal wire, rope 1 be easy to appear in 3 rotation process of rotary shaft around Line, above situation, further includes collector ring 40 in order to prevent, and collector ring 40 is nested between rotary shaft 3 and pedestal 2, and rotary shaft 3 is leaned on The surface of nearly clip 11 offers inlet wire slot 32, and rotary shaft 3 offers line outlet groove 33, rope from inlet wire slot 32 to end face along axial direction Signal wire is coated with inside 1, rope 1 is fixedly connected after sequentially passing through inlet wire slot 32 and line outlet groove 33 by one end that clip 11 is fixed Collector ring 40, cord outside connect collector ring 40 from line outlet groove 33.

During gradually tightening, direction is easy to wander off rope 1, further includes support frame 20 and payoff reel to rectify a deviation Cylinder 30, support frame 20 are fixedly installed on 2 surface of pedestal, and unwrapping wire reel 30 and support frame 20 are rotatably connected and face cable winding drum 10 settings, rope 1, which draws after being wrapped in spool body 101 and passes through cable winding drum 10, connects projectile.

The mode of action of the high speed ejection buffer unit of the utility model is as follows:

Pedestal 2 is fixedly connected with ejection parent object, and rope 1 is fixedly connected with projectile, and projectile pops up rear haulage through high speed Rope 1 is exceptionally straight；

Rope 1 draws rotary shaft 3 and rotates, and travelling nut 8 axially movable, squeezes spring 9, spring 9 relative to limiting slot 7 Extrusion friction piece group after deformation, the first friction plate 5 of rotation and the second friction plate 6 squeeze consumption kinetic energy；

As rope 1 is final exceptionally straight, spring 9 is deformed to the limit, is crushed to death between the first friction plate 5 and the second friction plate 6, Speed between projectile and ejection parent object gradually becomes smaller during this, final static.

The foregoing is merely the better embodiments of the utility model, are not intended to limit the utility model, it is all Within the spirit and principles of the utility model, it is practical new to should be included in this for any modification, equivalent replacement, improvement and so on Within the protection scope of type.

Claims (9)

1. a kind of high speed ejection buffer unit comprising rope (1), it is characterised in that: further include pedestal (2), rotary shaft (3), Sleeve (4), several first friction plates (5), several second friction plates (6), limiting slot (7), travelling nut (8) and spring (9), rotation Shaft (3) is rotatably connected with pedestal (2), and travelling nut (8) and rotary shaft (3) are rotatably connected and with limiting slot (7) along axis To being slidably connected, limiting slot (7) is fixed on pedestal (2), and the first friction plate (5) and the second friction plate (6) are successively staggered It forms friction plate group and is nested on rotary shaft (3), sleeve (4) is axially fixed on pedestal (2) and is nested in friction plate group Outside, rotary shaft (3) surface is axially disposed to be had spline (31), and fluted (51) are arranged in the first friction plate (5) inner peripheral surface, flower Key (31) is embedded in groove (51), and the second friction plate (6) outer peripheral surface is provided with fin (61), and sleeve (4) inner wall surface is along axis To being provided with sliding slot (41), fin (61) is embedded in sliding slot (41), and spring (9) is nested on rotary shaft (3) and both ends are supported respectively Travelling nut (8) and friction plate group are held, rope (1) one end is fixedly connected with rotary shaft (3), other end connection projectile.

2. high speed ejection buffer unit as described in claim 1, it is characterised in that: travelling nut (8) surface is along axial direction 90 ° of rotational symmetry are opened up there are four sliding groove (81), and limiting slot (7) includes four shift forks (71), and each shift fork (71) includes one Fixed column (711) and a limited post (712), limited post (712) is vertical with fixed column (711) fixed and axially disposed, and four Limited post (712) is respectively embedded into four sliding grooves (81).

3. high speed ejection buffer unit as claimed in claim 2, it is characterised in that: the travelling nut (8) further includes gasket (82), limiting slot (7) further includes fixed ring (72), and fixed ring (72) is fixed on four fixed column (711) end faces, and gasket (82) is solid It is scheduled on travelling nut (8) end face and part covers four fixed column (711) end faces, rotary shaft (3) passes through gasket (82).

4. high speed ejection buffer unit as described in claim 1, it is characterised in that: pedestal (2) further includes three fixing seats (21), three fixing seats (21) are set on same straight line, and rotary shaft (3) sequentially passes through three fixing seats (21) and difference therewith Bearing connection.

5. high speed ejection buffer unit as described in claim 1, it is characterised in that: further include cable winding drum (10), around the coil of wire Cylinder (10) includes spool body (101) and two stop collars (102), and spool body (101) is nested and is fixed on rotary shaft (3), Two stop collars (102) are extended outwardly by spool body (101) both ends respectively, and rope (1) is wrapped in spool body (101) Surface.

6. high speed ejection buffer unit as claimed in claim 5, it is characterised in that: cable winding drum (10) further includes two rolls (103), it is offered through-hole (104) on spool body (101) end face, two rolls (103) are axially fixed to spool body (101) on end face, rope (1) is fastened between two rolls (103) and rotary shaft (3) in the figure of eight, is then passed through through-hole (104)。

7. high speed ejection buffer unit as claimed in claim 6, it is characterised in that: further include clip (11), clip (11) is solid Surely it is set on rotary shaft (3), rope (1) one end is fixed on clip (11), in two rolls (103) and rotary shaft after extraction (3) it is wound between in the figure of eight.

8. high speed ejection buffer unit as claimed in claim 5, it is characterised in that: further include collector ring (40), collector ring (40) it being nested between rotary shaft (3) and pedestal (2), rotary shaft (3) offers inlet wire slot (32) close to the surface of clip (11), Rotary shaft (3) offers line outlet groove (33) from inlet wire slot (32) to end face along axial direction, is coated with signal wire inside rope (1), restricts Rope (1) is fixedly connected with collector ring (40) after sequentially passing through inlet wire slot (32) and line outlet groove (33) by clip (11) fixed one end, Cord outside connects collector ring (40) from line outlet groove (33).

9. high speed ejection buffer unit as claimed in claim 5, it is characterised in that: further include support frame (20) and unwrapping wire reel (30), support frame (20) is fixedly installed on pedestal (2) surface, and unwrapping wire reel (30) and support frame (20) are rotatably connected and face Cable winding drum (10) setting, rope (1) are wrapped in spool body (101) and draw afterwards and pass through cable winding drum (10) connection ejection Object.