CN208778441U - A kind of screw rod being adjustable aperture, nut anti-looseness combination unit - Google Patents

Abstract

The utility model provides a kind of screw rod for being adjustable aperture, nut anti-looseness combination unit, including anti-loosening screw, gasket, fixture；The gasket is set between stop nut and fixture, and the anti-loosening screw is built in the circular hole of the fixture；The anti-loosening screw includes screw rod, path transfer plug；The screw rod upper end offers screw rod bellmouth；The path transfer plug is built in screw rod bellmouth；The anti-pine combination not only substantially increases the tightness degree for tightening screw rod, frictional force and the resistance of loosening, can also make screw thread more evenly stress, while of less demanding to production equipment, technique, and production is simple.

Description

A kind of screw rod being adjustable aperture, nut anti-looseness combination unit

Technical field

The utility model relates to a kind of nut more particularly to a kind of screw rods for being adjustable aperture, nut anti-looseness combination unit.

Background technique

Existing screw rod, nut, ordinary circumstance are batch productions, will not be directed to each piece of screw rod actual size, then special The nut exactly matched therewith, so all there is more or less error, they are being screwed up in practical manufacture, use process When, there can be gap between screw thread, be that 100% cannot coincide, can only be that part coincide.Engagement between screw thread mainly relies on Nut tightens the reaction force of (axial direction) longitudinal caused by fixture, makes to generate press effect, loading characteristic: one between screw thread It is that there are biggish gaps between screw rod and nut；Second is that unbalance stress, is concentrated mainly on the 1st, 2 screw threads, easily locally Deformation, so that whole be gradually damaged；Third is that the forced area of screw thread is limited, the downside of upper track screw thread is often confined to under Between the upper side of road screw thread；Fourth is that the stubborn power that nut can bear is limited, usually in order to promote frictional resistance with locking, twist Tension directly causes thread damage, the above a variety of factors, and the engagement of screw thread is difficult securely to arrive never becoming loose.

But in the modern life, production, there are many equipment, such as train, generator, engine, vibration hammer, at work Great vibrations can be produced, fixture, screw rod can make rapidly irregular longitudinally, laterally relative displacement between nut, produce huge Big destructive power destroys the screw thread among engagement step by step, finally causes to loosen, to make not loosen, it is necessary to increase resistance when loosening Power, to prevent thread looseness.

In order to locking, domestic and abroad scientific and technical personnel did a large amount of practices, but were confined in the improvement of nut, for example, now in " the Hard Lock of the never becoming loose of Japanese Hard Lock Kogyo K. Co. that the country such as state, Japan or even Germany generallys use Nut ".It is also only the principle by chock, solves the problems, such as easy loosening using 2 eccentric nuts, but for screw thread unevenness Even stress problem (chock circumferential pressure is especially big), still not can effectively solve, and Reusability be easy to cause local damage, and raw Production. art is miscellaneous multiple, although structure very simple, production difficulty is very big, many enterprises's " object is hoped to heave a sigh ".It is existing locking to solve The problem of technology, the utility model provides a kind of nut for being adjustable aperture, the anti-pine combination of screw rod, not only to spiral shell Mother is transformed, and completely new innovation is also proposed to screw rod and fixture, first is that improving screw thread tightness degree, increases stress And forced area, frictional force when loosening is significantly increased, second is that making screw thread more evenly stress, caused by effective decomposition vibration Destructive power, third is that screw diameter is not equal big above and below, it is up big and down small, stop nut to be loosened from bottom to top, fourth is that being arranged in spiral shell Several concane gaps of bar part can effectively stop relative displacement between screw thread, prevent nut from curling up loosening, and five are locked out fixation Object, screw rod, nut, lateral displacement when reducing vibration between them, mitigate the intensity of vibration, sixth is that setting to production from source It is standby, technique is of less demanding, production is simple.

Utility model content

To solve problems of the prior art, the utility model provides a kind of screw rod for being adjustable aperture, nut Locking combination unit not only increases the tightness degree for tightening screw rod and loosens resistance, can also make screw thread more evenly stress, Of less demanding to production equipment, technique simultaneously, production is simple.

The technology employed by the present utility model is a kind of screw rod for being adjustable aperture, nut anti-looseness combine the unit, packet Include anti-loosening screw, fixture, gasket；The anti-loosening screw is built in the circular hole of the fixture；The gasket is set to anti- Between loose nut and fixture, the fixture surface is equipped with several small protrusions, and the anti-loosening screw includes screw rod, path transfer Plug；The screw rod upper end offers screw rod bellmouth；The path transfer plug is built in screw rod bellmouth.

Preferably, the screw rod bellmouth deviates screw stem, and screw rod bellmouth top is cylindrical, and lower part is in Infundibulate, screw rod bellmouth lower diameter are from top to bottom gradually successively decreased；

Portion is cylindrical beyond the Great Wall for the path transfer, coincide with screw rod bellmouth top, and path transfer plug lower part is in infundibulate, with screw rod Bellmouth lower part coincide.

Screw rod bellmouth top is provided with screw thread, and the path transfer plug upper part is provided with screw thread, the screw rod cone Portion is threadedly coupled beyond the Great Wall with path transfer on shape hole top.

Preferably, screw rod bellmouth top is in infundibulate, and lower part is cylindrical；Screw rod bellmouth upper diameter is by upper Gradually successively decrease under；

Portion is in infundibulate beyond the Great Wall for the path transfer, is coincide with screw rod bellmouth top, path transfer plug lower part is cylindrical, with screw rod Bellmouth lower part coincide；

The screw rod bellmouth lower inside is provided with screw thread, and the path transfer plug lower outside is provided with screw thread, the spiral shell Bar bellmouth lower part is connect with path transfer plug lower thread.

Preferably, the screw rod taper bore end is provided with screw through hole, the screw rod bellmouth and the screw through hole Connection, the screw through hole is cylindrical, and the screw through hole exit is provided with ramp type block；

Path transfer plug lower end is provided with path transfer plug tip top, and the path transfer plug tip tip end position is equipped with several anti-skidding Groove, path transfer plug tip top passes through screw through hole, and under the unilateral side through ramp type block is exerted oneself, screw through hole is stretched out in bending.

It preferably, further include that stop nut, locking agent, the stop nut are threadedly coupled with anti-loosening screw, the fixation Horn mouth is offered on the inside of the circular hole of object, along horn mouth periphery, the position below gasket is provided with several small protrusions, actually It is exactly the small protrusion of fixture surface setting；The locking agent is set at the horn mouth.

Preferably, the stop nut includes nut body, nut head, built-in nut；The nut body and the nut head It is flexibly connected by the nut body ladder chute in nut head；Be provided with path transfer ring on the outside of the nut body, the path transfer ring with The nut body is threadedly coupled；Open up fluted inside the nut head, the built-in nut is built in the groove, described Built-in nut is flexibly connected with the nut head by the built-in nut ladder chute in nut head groove walls.

Preferably, the screw rod taper hole wall, nut body are vertically arranged with 4 shrinking cracks, respectively by screw rod taper Hole wall, nut body are cut into four parts；4 planes where 4 shrinking cracks of screw rod taper hole wall intersect at screw rod taper In hole；4 planes where 4 shrinking cracks of nut body intersect at nut body central axis.Wherein, shrinking cracks keep appropriate Thickness.

Preferably, the outside screw of the screw rod and the nut body being connect with screw rod outside screw, nut head, built-in spiral shell The shape of box thread is trapezoidal.

Preferably, the screw rod outside screw with built-in nut junction is equipped with several concane gaps.

Preferably, the locking agent is the coagulator of semifluid shape.

Preferably, the material of the built-in nut is the preferable material of ductility, such as aluminum bronze.

Preferably, the side of the screw head is provided with anchor studs, and the screw rod and anchor studs are integrated setting.

It compares with the prior art, the beneficial effect that the utility model generates is:

(1) path transfer ring provided by the utility model is tightened inward, can be squeezed nut body and be drawn close to screw rod, to promote them Between screw thread tightness degree；Screw rod bellmouth lower part is in infundibulate, diameter from top to bottom gradually successively decreases, and path transfer plug is being squeezed into In the process, meeting extruding screw taper hole wall expands outward, thus the screw thread tightness degree between promoting them；Shrinking cracks are to adjust The premise of screw diameter and nut body aperture, path transfer plug and path transfer ring are reached by the gap size of their shrinking cracks of adjusting The purpose of the size in adjusting screw rod diameter and nut body aperture；Screw thread is with the promotion of tightness degree, their contact surface is by passing 1 face of system situation becomes upper and lower 2 faces, and such area will greatly increase；Power twisting in addition to usual situation between screw thread Outside power, also from the extruding force of the path transfer rings of their two sides, path transfer plug, the stress between screw thread can be greatly increased；Screw rod The shape of the screw thread of components such as outside screw and the nut body, nut head, the built-in nut that connect with screw rod outside screw is It is trapezoidal, it acts on and is to prevent, eliminate screw thread pinnacle single-point stress, on the side for pressure all being decomposed screw thread, increase rubs Wipe area.

(2) built-in nut provided by the utility model be ductile material, under stress can tendency towards compromise deformation, power is carried out It decomposes, transmitting；Path transfer plug extruding screw taper hole wall expands outward, and screw rod can be made up big and down small, the tightness degree ratio of upper part Lower part wants high, while also generating downtrend, to promote top stress condition；

(3) after path transfer plug squeezes into screw rod bellmouth, screw diameter is not equal big above and below, up big and down small, stops nut under It is loosened upwards；

(4) the screw rod outside screw provided by the utility model connecting with built-in nut is equipped with several concane gaps, built-in Nut is made of the preferable material of ductility, under stress, can be squeezed into concane gap, can effectively stop phase between screw thread To rotation, prevent nut from curling up loosening；

(5) fixture, screw rod, nut are locked using locking agent, lateral displacement when reducing vibration between them, from source The upper intensity for mitigating vibration；

(6) after path transfer plug is squeezed into the screw rod bellmouth for deviateing screw stem, the screw rod of this part can be promoted to be deformed into Oval structure can stop round nut to rotate outward loosening upwards；The pointed tip of path transfer plug pass through screw through hole, exit by Under the squeezing action of ramp type block, bending deformation can withhold screw rod bottom surface or insertion fixture, while screw through hole exit Ramp type block can also block the antiskid groove on path transfer plug tip top.

(7) fixture surface is provided with several small protrusions, can be formed and be locked with the bottom surface of gasket after tightening, while gasket Upper top surface can also with built-in nut ladder chute formed lock, such stop nut just with fixture formed locking.

(8) side of screw head is provided with anchor studs, squeezes into gasket after screw rod fastening, can further reinforces.

(9) screw rod provided by the utility model for being adjustable aperture, nut anti-looseness combination require not production equipment, technique Height, production are simple.

Detailed description of the invention

Fig. 1 is the screw rod provided by the utility model for being adjustable aperture, nut anti-looseness combination unit sectional view；

Fig. 2 be the screw rod for being adjustable aperture of another embodiment provided by the utility model, nut anti-looseness combination unit cut open Face figure；

Fig. 3 be the screw rod for being adjustable aperture of another embodiment provided by the utility model, nut anti-looseness combination unit cut open Face figure；

Attached concrete meaning marked in the figure is as follows:

1: nut head；2: nut body；3: built-in nut；4: path transfer ring；5: fixture；6: screw rod；7: locking agent；8: built-in Nut ladder chute；9: nut body ladder chute；10: screw rod bellmouth；11: path transfer plug；12: path transfer plug tip top；13: screw rod Through-hole；14: ramp type block；15: gasket；16: anchor studs.

Specific embodiment

With reference to the accompanying drawing, specific embodiment of the present utility model is described in detail.

As shown in Figs. 1-2, the technology employed by the present utility model is a kind of screw rod for being adjustable aperture, nut are anti- Pine combination device, including anti-loosening screw, fixture 5, gasket 15；Anti-loosening screw is built in the circular hole of fixture 5；Gasket 15 is set Be placed between stop nut and fixture 5,5 upper surface of fixture is provided with several small protrusions, anti-loosening screw include screw rod 6, Path transfer plug 11；6 upper end of screw rod offers screw rod bellmouth 10；Path transfer plug 11 is built in screw rod bellmouth 10.Path transfer plug 11 with 10 shape size of screw rod bellmouth coincide, wherein screw rod bellmouth 10 deviates 6 central axis of screw rod, and 10 top of screw rod bellmouth is in Cylindrical shape, lower part are in infundibulate, and 10 lower diameter of screw rod bellmouth is from top to bottom gradually successively decreased；Path transfer plug 11 is in the process squeezed into In, meeting 10 wall of extruding screw bellmouth expands outward, to promote the screw thread tightness degree between nut；11 top of path transfer plug is in Cylinder is coincide with 10 top of screw rod bellmouth, and 11 lower part of path transfer plug is in infundibulate, is coincide with 10 lower part of screw rod bellmouth, together When path transfer plug 11 be squeezed into the screw rod bellmouth 10 for deviateing 6 central axis of screw rod after, the screw rod 6 of this part can be promoted to be deformed into ellipse Structure can stop round nut to rotate outward loosening upwards；

10 upper inner of screw rod bellmouth provided by the invention is provided with screw thread, and 11 upper-outer portion of path transfer plug is provided with The height of screw thread, screw thread is shorter than 10 top of screw rod bellmouth, and 10 top of screw rod bellmouth is threadedly coupled with 11 top of path transfer plug.

Wherein, 10 end of screw rod bellmouth provided by the invention is provided with screw through hole 13, screw rod bellmouth 10 and screw rod Through-hole 13 is connected to, and screw through hole 13 is cylindrical, and 13 exit of screw through hole is provided with ramp type block 14；

11 lower end of path transfer plug is provided with path transfer plug tip top 12, and 12 terminal position of path transfer plug tip top is equipped with several anti-skidding recessed Slot, path transfer plug tip top 12 pass through screw through hole 13, in exit under by the squeezing action of ramp type block 14, bending deformation meeting 6 bottom surface of screw rod or insertion fixture 5 are withheld, while the ramp type block 14 in 13 exit of screw through hole can also block path transfer plug tip Antiskid groove on top 12.

Locking combination unit provided by the invention further includes stop nut, locking agent 7；Wherein, locking agent 7 is semifluid shape Coagulator.Stop nut is threadedly coupled with anti-loosening screw, and locking agent 7 is set at horn mouth, is opened on the inside of the circular hole of fixture Equipped with horn mouth, along horn mouth periphery, the position of the lower section of gasket 15 is provided with several locking small protrusions, actually and fixture The small protrusion of 5 upper surfaces setting, after tightening can and the bottom surface of gasket 15 formed and lock, while the upper top surface of gasket 15 can also be with Built-in nut ladder chute 8 forms locking, and such stop nut is just formed with fixture 5 and locked, while being locked using locking agent 7 Fixture 5, screw rod 6, nut, lateral displacement when reducing vibration between them, mitigate the intensity of vibration from source.

Stop nut provided in the present invention includes nut body 2, nut head 1, built-in nut 3；The nut body 2 with it is described Nut head 1 is flexibly connected by the nut body ladder chute 9 in nut head 1；Path transfer ring 4, institute are provided on the outside of the nut body 2 Path transfer ring 4 is stated to be threadedly coupled with the nut body 2；Open up fluted inside the nut head 1, the built-in nut 3 is built in In the groove, the built-in nut 3 is living by the built-in nut ladder chute 8 in nut head groove walls with the nut head 1 Dynamic connection.

10 wall of screw rod bellmouth provided by the invention, nut body 2 are vertically arranged with 4 shrinking cracks, respectively by screw rod 10 wall of bellmouth, nut body 2 are cut into four parts；4 planes where 4 shrinking cracks of 10 wall of screw rod bellmouth intersect at In screw rod bellmouth 10；4 planes where 4 shrinking cracks of nut body 2 intersect at 2 central axis of nut body, shrinking cracks It is the premise in 2 aperture of 6 diameter of adjusting screw rod and nut body, path transfer plug 11 and path transfer ring 4 are squeezed by the advance and retreat of itself, adjusted The gap size of their shrinking cracks, to reach the purpose of the size in 2 aperture of 6 diameter of adjusting screw rod and nut body.

Wherein, the outside screw of screw rod 6 provided by the invention and the nut body 2, the nut that are connect with 6 outside screw of screw rod First 1, the shape of 3 screw thread of built-in nut is trapezoidal, and effect is to prevent, eliminate screw thread pinnacle single-point stress, and pressure is complete Portion decomposes on the side of screw thread, increases friction area.

Wherein, several concane gaps are equipped with 6 outside screw of screw rod of 3 junction of built-in nut, built-in nut 3 is by extending Property preferable material be made, under stress, can be squeezed into concane gap, can effectively stop to relatively rotate between screw thread, prevent Only nut curls up loosening；

The application method of the screw rod provided by the utility model for being adjustable aperture, nut anti-looseness combination unit:

The first step in the circular hole for screw rod 6 being put into fixture 5, adjusts good position, the horn mouth note that circular-hole internal-wall opens up Enter locking agent 7；Gasket 15 is put simultaneously.

Second, the path transfer ring 4 in loose 2 outside of nut body is adjusted, keeps the aperture of nut body 2 maximum, then stop nut is covered and is twisted On anti-loosening screw, hereafter further according to the tightness of nut body 2 and anti-loosening screw, path transfer ring 4 is tightened, is adjusted using path transfer ring 4 The aperture for saving (diminution) nut body 2 is careful not to twist too tight with anti-loosening screw tight connecting.

Third step rotates, tightens nut head 1；Because nut body 2 and built-in nut 3 are connect by sliding slot with nut head 1 Together, object (fixture 5) is fastened so will drive entire stop nut at this time.

4th step, path transfer plug 11 are screwed into screw rod bellmouth 10, the enlarged-diameter of 6 upper end of screw rod, while this portion Screw rod 6 is divided to become ellipse from circle.

Embodiment 1:

As shown in Figure 1, a kind of screw rod for being adjustable aperture, nut anti-looseness combine the unit, including anti-loosening screw, fixture 5, Gasket 15；Anti-loosening screw is built in the circular hole of fixture 5；Gasket 15 is set between stop nut and fixture 5, fixture 5 surfaces are provided with several small protrusions, and anti-loosening screw includes screw rod 6, path transfer plug 11；6 upper end of screw rod offers screw rod bellmouth 10；Path transfer plug 11 is built in screw rod bellmouth 10, and path transfer plug 11 matches with 10 shape size of screw rod bellmouth.

Wherein, the screw rod bellmouth 10 provided in the present embodiment deviates screw stem, and 10 top of screw rod bellmouth is in circle Tubular, lower part are in infundibulate, and 10 lower diameter of screw rod bellmouth is from top to bottom gradually successively decreased；11 top of path transfer plug is cylindrical, It coincide with 10 top of screw rod bellmouth, 11 lower part of path transfer plug is in infundibulate, is coincide with 10 lower part of screw rod bellmouth, and the present invention provides 10 upper inner of screw rod bellmouth be provided with screw thread, 11 upper-outer portion of path transfer plug is provided with screw thread, the height ratio of screw thread 10 top of screw rod bellmouth wants short, and 10 top of screw rod bellmouth is threadedly coupled with 11 top of path transfer plug.In fact, being mentioned in the present invention The screw rod bellmouth 10 of confession and the shape of path transfer plug 11 can also be other any shapes, as long as path transfer plug 11 and screw rod bellmouth 10 Shape size matches.

10 end of screw rod bellmouth in the present embodiment is provided with screw through hole 13, screw rod bellmouth 10 and screw through hole 13 Connection, screw through hole 13 is cylindrical, and 13 exit of screw through hole is provided with ramp type block 14；11 lower end of path transfer plug is provided with Path transfer plug tip top 12,12 terminal position of path transfer plug tip top are equipped with several antiskid grooves, and path transfer plug tip top 12 passes through screw rod Through-hole 13, in exit under by the squeezing action of ramp type block 14, bending deformation can withhold 6 bottom surface of screw rod or insertion fixture 5, while the ramp type block 14 in 13 exit of screw through hole can also block the antiskid groove on path transfer plug tip top 12.

The locking combination unit provided in the present embodiment further includes stop nut, locking agent 7；Wherein, locking agent 7 is semi-fluid The coagulator of body shape.Stop nut is threadedly coupled with anti-loosening screw, and locking agent 7 is set at horn mouth, in the circular hole of fixture 5 Side offers horn mouth, and along horn mouth periphery, the position of 15 lower section of gasket is provided with several locking small protrusions.It is mentioned in the present embodiment The stop nut of confession includes nut body 2, nut head 1, built-in nut 3；Nut body 2 and nut head 1 pass through the nut in nut head 1 Body ladder chute 9 is flexibly connected；Path transfer ring 4 is provided on the outside of nut 2, path transfer ring 4 is threadedly coupled with nut body 2；In nut head 1 Portion opens up fluted, and built-in nut 3 is built in the groove, and the built-in nut 3 passes through nut head 1 with the nut head 1 Built-in nut ladder chute 8 in groove walls is flexibly connected.

10 wall of screw rod bellmouth, the nut body 2 provided in the present embodiment is vertically arranged with 4 shrinking cracks, respectively will 10 wall of screw rod bellmouth, nut body 2 are cut into four parts；4 plane phases where 4 shrinking cracks of 10 wall of screw rod bellmouth It meets in screw rod bellmouth；4 planes where 4 shrinking cracks of nut body 2 intersect at 2 central axis of nut body, flexible to split Seam is the premise in 2 aperture of 6 diameter of adjusting screw rod and nut body, and path transfer plug 11 and path transfer ring 4 are squeezed by the advance and retreat of itself, adjusted The gap size of their shrinking cracks is saved, to reach the purpose of the size in 2 aperture of 6 diameter of adjusting screw rod and nut body.

Wherein, the outside screw of the screw rod provided in the present embodiment and nut body 2, the spiral shell being connect with screw rod outside screw Female 1, the shape of 3 screw thread of built-in nut are trapezoidal.

Wherein, with 6 outside screw of screw rod of 3 junction of built-in nut be equipped with several concane gaps, built-in nut 3 by aluminium, Copper is under stress, being squeezed into concane gap, can effectively stop to relatively rotate between screw thread, prevent nut from curling up It loosens.

Embodiment 2:

As shown in figure 3, a kind of screw rod for being adjustable aperture, nut anti-looseness combine the unit, including anti-loosening screw, fixture 5, Gasket 15；Anti-loosening screw is built in the circular hole of the fixture 5；Gasket 15 be set to anti-loosening screw head and fixture 5 it Between, 5 surface of fixture is equipped with several small protrusions, can be formed and be locked with the bottom surface of gasket 15 after tightening, anti-loosening screw includes Screw rod 6, path transfer plug 11；6 upper end of screw rod offers screw rod bellmouth 10；Path transfer plug 11 is built in screw rod bellmouth 10.Wherein, Anchor studs 16 are provided on the side of screw head provided in the present invention, screw rod 6 and anchor studs 16 are integrated setting,

Wherein, screw rod bellmouth 10 deviates screw stem, and 10 top of screw rod bellmouth is cylindrical, and lower part is in funnel Shape, screw rod bellmouth lower diameter are from top to bottom gradually successively decreased；11 top of path transfer plug is cylindrical, with 10 top of screw rod bellmouth It coincide, 11 lower part of path transfer plug is in infundibulate, is coincide with 10 lower part of screw rod bellmouth.10 upper inner of screw rod bellmouth is provided with spiral shell Line, 11 upper-outer portion of path transfer plug are provided with screw thread, and 10 top of screw rod bellmouth is threadedly coupled with 11 top of path transfer plug.

A series of detailed description described above only for the utility model feasible embodiment it is specific Illustrate, they are not the protection scope to limit utility model, are had in the technical field those of ordinary skill In knowledge, the various change made without departing from the purpose of the present invention belongs to the protection model of utility model It encloses.

Claims (10)

1. a kind of screw rod for being adjustable aperture, nut anti-looseness combine the unit, which is characterized in that including anti-loosening screw, fixture, pad Piece；The anti-loosening screw is built in the circular hole of the fixture；The gasket is set between stop nut and fixture, institute Fixture upper surface is stated equipped with several small protrusions, the anti-loosening screw includes screw rod, path transfer plug；The screw rod upper end offers Screw rod bellmouth；The path transfer plug is built in screw rod bellmouth.

2. locking combination unit as described in claim 1, which is characterized in that the screw rod bellmouth deviates screw stem, Screw rod bellmouth top is cylindrical, and lower part is in infundibulate, and screw rod bellmouth lower diameter is from top to bottom gradually successively decreased；

Portion is cylindrical beyond the Great Wall for the path transfer, coincide with screw rod bellmouth top, and path transfer plug lower part is in infundibulate, with screw rod taper Hole lower part coincide；

The screw rod bellmouth upper inner is provided with screw thread, and the path transfer plug upper-outer portion is provided with screw thread, the spiral shell Portion is threadedly coupled beyond the Great Wall with path transfer on bar bellmouth top.

3. locking combination unit as described in claim 1, which is characterized in that screw rod bellmouth top is in infundibulate, under Portion is cylindrical；Screw rod bellmouth upper diameter is from top to bottom gradually successively decreased；

Portion is in infundibulate beyond the Great Wall for the path transfer, is coincide with screw rod bellmouth top, path transfer plug lower part is cylindrical, with screw rod taper Hole lower part coincide；

The screw rod bellmouth lower inside is provided with screw thread, and the path transfer plug lower outside is provided with screw thread, the screw rod cone Shape hole lower part is connect with path transfer plug lower thread.

4. locking combination unit as claimed in claim 2 or claim 3, which is characterized in that the screw rod taper bore end is provided with spiral shell Rod through-hole, the screw rod bellmouth are connected to the screw through hole, and the screw through hole is cylindrical, the screw through hole outlet Place is provided with ramp type block；

Path transfer plug lower end is provided with path transfer plug tip top, and it is anti-skidding recessed that the path transfer plug tip tip end position is equipped with several Slot, path transfer plug tip top passes through screw through hole, and under the unilateral side through ramp type block is exerted oneself, screw through hole is stretched out in bending.

5. locking combination unit as described in claim 1, which is characterized in that further include stop nut, locking agent, described locking Nut is threadedly coupled with anti-loosening screw, and horn mouth is offered on the inside of the circular hole of the fixture, and the locking agent is set to described At horn mouth.

6. locking combination unit as claimed in claim 5, which is characterized in that the stop nut include nut body, nut head, Built-in nut；The nut body is flexibly connected with the nut head by the nut body ladder chute in nut head；The nut It is provided with path transfer ring on the outside of body, the path transfer ring is threadedly coupled with the nut body；Fluted, institute is opened up inside the nut head It states built-in nut to be built in the groove, the built-in nut and the nut head pass through the built-in spiral shell in nut head groove walls Female ladder chute is flexibly connected.

7. locking combination unit as claimed in claim 6, which is characterized in that the screw rod taper hole wall, nut body are longitudinal 4 shrinking cracks are provided with, screw rod taper hole wall, nut body are cut into four parts respectively；4 of screw rod taper hole wall are flexible 4 planes where crack intersect in screw rod bellmouth；4 planes where 4 shrinking cracks of nut body intersect at spiral shell Female body central axis.

8. locking combination unit as claimed in claim 6, which is characterized in that the outside screw of the screw rod and with outside screw rod The nut body of side threaded connection, nut head, the shape of built-in nut screw thread are trapezoidal.

9. locking combination unit as claimed in claim 6, which is characterized in that on the outside of the screw rod with built-in nut junction If screw thread is equipped with a dry concane gap.

10. locking combination unit as claimed in claim 5, which is characterized in that the locking agent is the coagulator of semifluid shape.