CN207229564U - Locking gear - Google Patents

Abstract

The utility model provides a kind of locking gear, including：Block, block are equipped with groove and main thread hole, and main thread hole is used to be connected with driving screw；At least one retainer, retainer include two stop valves being oppositely arranged, and each stop valve both ends are respectively fixing end and compression end, and the fixing end of each stop valve and the inner wall of groove connect；In each retainer, the size of space between the compression end of two stop valves is less than the size of space between the fixing end of two stop valves；At least one compression actuator, block is equipped with for each driving mounting portion for compressing actuator installation, actuator is compressed by promoting two stop valves in each retainer to be moved to main thread hole, so that the compression end of all stop valves compresses the driving screw.When the block of the utility model has loosening trend, increase one of stop valve deformation in each retainer, the pressure between stop valve and driving screw also becomes larger therewith, so as to form self-locking state.

Description

Locking gear

Technical field

Fastenings technical field is the utility model is related to, more particularly to a kind of locking gear.

Background technology

Threaded connector is one kind of fastener.Connection screw thread can generally meet condition of self-locking, tighten with back nut and Frictional force on the supporting surfaces such as bolt head also has anti-loose effect, so in dead load and little temperature change, screw thread Connection will not loosen automatically.But under the action of shock and vibration or time dependent loading, the frictional force between screw pair may reduce or instantaneously Disappear.After this phenomenon is repeated several times, connection will be loosened.In the case where high temperature or temperature change are larger, material it is compacted Change and stress relaxation, can also have a negative impact connection.

It is threadedly coupled once loosening, the lighter can influence structure and the normal use of machine, and severe one can cause serious thing Therefore.Therefore, effective locking measures must be taken during design.Locking root problem is to prevent screw pair from stand under load occurring Relatively rotate.Locking method, it is locking, mechanical locking and destruction screw pair movement relation anti-to be divided into friction by its operation principle Pine etc..Generally, rub locking simple, conveniently but locking reliable without machinery.Machinery is locking reliable, but sometimes for Increase special component on bolt or connected piece.The locking of screw pair movement relation is destroyed, connector is general after removal It cannot be applicable in again.

Chinese utility model patent《A kind of stop nut》, publication number：CN104074854A, the side of the locking gear are matched somebody with somebody Be equipped with bayonet lock, which actually can be considered a small screw, by the transverse shear stress of small screw and driving screw screw thread come Locking gear is helped to fix.The locking gear has certain anti-loose effect；However, the small screw in itself with driving screw screw thread Contact surface is limited, and small screw slightly loosens, and anti-loose effect is disintegrated immediately.This kind of locking gear can not form a kind of " self-locking " effect Should, this " self-locking " effect is：Once there is loosening trend, being conducive to locking effect can be increasing.

Utility model content

In view of the foregoing deficiencies of prior art, the purpose of this utility model is to provide a kind of locking gear, it is used for Solve the above-mentioned problems in the prior art.

In order to solve the above-mentioned technical problem, the utility model provides a kind of locking gear, for being connected with driving screw；This is anti- Loose mechanism includes：Block, one end of the block are equipped with groove, and the other end of the block is equipped with main thread hole, described Main thread hole is connected with the groove, and the size in the duct that the inner wall of the groove is formed is more than the ruler in the main thread hole Very little, the main thread hole is used to be connected with the driving screw；At least one retainer, all retainers are around described recessed The circumferential direction of the inner wall of groove is set gradually, and each retainer includes two stop valves being oppositely arranged, each stop valve Both ends are respectively fixing end and compression end, and the fixing end of each stop valve is connected with the inner wall of the groove, each described Horizontal distance between the central axes in the compression end of stop valve and the main thread hole is more than the radius in the main thread hole；Every In a retainer, the size of space between the compression end of two stop valves is less than the fixing end of two stop valves Between the size of space；At least one compression actuator, the compression actuator is identical with the quantity of the retainer, described piece Body is equipped with for each driving mounting portion for compressing actuator and installing, and the compression actuator is by promoting each described stop Two stop valves in moving part are moved to the center of the groove, so that the compression end of all stop valves compresses the master Screw rod.

Preferably, each compression actuator is sub- screw rod, and each driving mounting portion is and the sub- screw rod phase The sub- threaded hole answered.

Preferably, each stop valve is arc, in each retainer, the stop valves of two arcs to Direction bending close to each other.

Preferably, in each retainer, it is respectively equipped with stop part on the opposite flank of two stop valves, two Form the wedge shape towards the block center between a stop part being oppositely arranged to close up, the remote institute that the wedge shape closes up The size of the one end at block center is stated more than the size of the one end at the close block center that the wedge shape closes up, the compression Actuator closes up through the wedge shape.

Further, the wedge shape closes up passes through for the compression actuator along horizontal direction.

Further, the driving mounting portion is the side wall upper-side hole for being arranged at the block, and the driving is installed Portion is connected with the groove.

Further, the wedge shape closes up passes through for the compression actuator along vertical direction.

Further, the driving mounting portion is the bottom outlet being arranged on the bottom wall of the groove.

Further, in each retainer, the opposite flank of two stop parts is plane.

Further, in each retainer, recess is equipped with the opposite flank of two stop parts.

As described above, the locking gear of the utility model, has the advantages that：

(1) it is provided with the locking gear of the utility model and compresses actuator, is used to compression actuator be installed on block The main thread hole being threadedly coupled on driving mounting portion and block with driving screw, both is the diverse location for being located at block respectively, Under the influence of detrimental effect, between the frictional force and driving screw screw thread and main thread hole between compression actuator and driving mounting portion Frictional force will not synchronization at the same time reduce or disappear, realize two mutually independent fastening structures；

(2) driving screw is installed on two stop valves of the fastening force formed in main thread hole and each retainer to driving screw Thrust also be located at different directions in space, under the influence of detrimental effect, both will not weaken at the same time in synchronization, Realize two mutually independent fastening structures；

(3) in locking gear, compression is spaced between the compression end of two stop valves in each retainer By distending when actuator loads driving mounting portion, and compression actuator is clamped, and then produce the pressure to compressing actuator, make pressure The installation of tight actuator and driving mounting portion keeps impaction state；

(4) actuator is compressed behind the interval between entering the compression end of two stop valves, continuation holds out against forward stop valve, Stop valve is set to produce displacement with both sides forwards, so as to hold out against driving screw；Interval between the compression end of two stop valves Size is less than the size of space between the fixing end of two stop valves, when block has loosening trend, makes each retainer In the deformation of one of stop valve increase, the pressure between stop valve and driving screw also becomes larger therewith, so as to form self-locking state； Meanwhile the deformation of stop valve can also make compression actuator be in micro-bend state, increase compresses actuator and is connected with driving mounting portion The thrust at place；

(5) when dismantling the locking gear, first remove and compress actuator, then can easily make block real with driving screw Now dismantle.

Brief description of the drawings

Fig. 1 is shown as not installing dimensional structure diagram when compressing actuator in the block of the locking gear of embodiment 1.

The compression actuator that Fig. 2 is shown as in the block of the locking gear of embodiment 1 penetrates vertical view during driving mounting portion Cross-sectional view.

The compression actuator that Fig. 3 is shown as in the block of the locking gear of embodiment 1 penetrates side view during driving mounting portion Internal structure schematic diagram.

The compression actuator that Fig. 4 is shown as in the block of the locking gear of embodiment 1 passes through driving mounting portion, and passes through wedge Top view cross section structure diagram when shape closes up.

Fig. 5 is shown as the schematic diagram of the stop valve of the locking gear of embodiment 1.

Fig. 6 is shown as the schematic diagram before the Curvature varying of the stop valve of the locking gear of embodiment 1 and after change.

Fig. 7 is shown as the schematic diagram that the wedge shape of the locking gear of embodiment 1 closes up.

Fig. 8 is shown as not installing dimensional structure diagram when compressing actuator in the block of the locking gear of embodiment 2.

Fig. 9 is shown as not installing internal structure schematic diagram when compressing actuator in the block of the locking gear of embodiment 2.

The top view cross section structure that Figure 10 is shown as not installing in the block of the locking gear of embodiment 2 when compressing actuator is shown It is intended to.

Figure 11 is shown as the schematic diagram that the wedge shape of the locking gear of embodiment 2 closes up.

Drawing reference numeral explanation

100 blocks

110 grooves

120 main thread holes

200 driving screws

300 retainers

310 stop valves

311 fixing ends

312 compression ends

400 compress actuator

500 driving mounting portions

600 stop parts

610 wedge shapes close up

620 recesses

Embodiment

Illustrate the embodiment of the utility model by particular specific embodiment below, those skilled in the art can be by this Content disclosed by specification understands other advantages and effect of the utility model easily.

Refer to attached drawing.It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., only coordinating The revealed content of specification, so that those skilled in the art understands and reads, being not limited to the utility model can be real The qualifications applied, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size It is whole, in the case where not influencing the effect of the utility model can be generated and the purpose that can reach, should all still fall in the utility model institute The technology contents of announcement are obtained in the range of covering.Meanwhile in this specification it is cited as " on ", " under ", "left", "right", The term of " centre " and " one " etc., is merely convenient to understanding for narration, and is not used to limit the enforceable scope of the utility model, Its relativeness is altered or modified, in the case where changing technology contents without essence, when being also considered as the enforceable category of the utility model.

Embodiment 1

As shown in Figures 1 to 7, the locking gear of the present embodiment, for being connected with driving screw 200；

The locking gear includes：

Block 100, one end of block 100 are equipped with groove 110, and the other end of block 100 is equipped with main thread hole 120, Main thread hole 120 is connected with groove 110, and the size in the duct that the inner wall of groove 110 is formed is more than the ruler in main thread hole 120 Very little, main thread hole 120 is used to be connected with driving screw 200；

At least one retainer 300, the circumferential direction of inner wall of all retainers 300 around groove 110 are set gradually, each Retainer 300 includes two stop valves 310 being oppositely arranged, and each 310 both ends of stop valve are respectively fixing end 311 and compression end 312, the fixing end 311 of each stop valve 310 is connected with the inner wall of groove 110, compression end 312 and the master of each stop valve 310 Horizontal distance between the central axes of threaded hole 120 is more than the radius in main thread hole 120；

In each retainer 300, the size being spaced between the compression end 312 of two stop valves 310 is less than two stop The size being spaced between the fixing end 311 of valve 310；

At least one compression actuator 400, compression actuator 400 is identical with the quantity of retainer 300, is set on block 100 Have for each driving mounting portion 500 for compressing actuator 400 and installing, compress actuator 400 by promoting in each retainer 300 Two stop valves 310 moved to main thread hole 120 so that all stop valves 310 compression end 312 compress driving screw 200.

In order to ensure movement of the stop valve 310 in the case where compressing the promotion of actuator 400, the bottom of stop valve 310 and groove 110 There is gap between face, i.e.,：Stop valve 310 is not contacted with the bottom surface of groove 110.

Since the horizontal distance between the compression end 312 of each stop valve 310 and the central axes in main thread hole 120 is more than master The radius of threaded hole 120, so before compressing actuator 400 and being also not mounted in driving mounting portion 500, driving screw 200 and institute There is gap between some stop valves 310, do not contact；After actuator 400 is compressed with the driving installation of mounting portion 500, driving is compressed Part 400 is by promoting two stop valves 310 in each retainer 300 to be moved to main thread hole 120, so that all stop valves 310 compression end 312 compresses driving screw 200.

In the present embodiment, the quantity of retainer 300 is 1 to 6, compresses the quantity and retainer 300 of actuator 400 Quantity is equal.

It is provided with the locking gear of the utility model and compresses actuator 400, installation compression actuator 400 on block 100 Driving mounting portion 500 and block 100 on the main thread hole 120 that is threadedly coupled with driving screw 200, both is to be located at block respectively Diverse location on body 100, under the influence of detrimental effect, compress actuator 400 and drive mounting portion 500 between frictional force and Frictional force between 200 screw thread of driving screw and main thread hole 120 will not reduce or disappear at the same time in synchronization, realize two Mutually independent fastening structure.Detrimental effect influences：To compress actuator 400 and driving mounting portion 500 between and main spiral shell Shock and vibration or varying load effect for being produced between 200 screw thread of bar and main thread hole 120 etc..

Driving screw 200 is installed on two stop valves of the fastening force formed in main thread hole 120 and each retainer 300 The thrust of 310 pairs of driving screws 200 also is located at the different directions in space, and under the influence of detrimental effect, both will not be same One moment weakened at the same time, realized two mutually independent fastening structures.

In locking gear, compression is spaced between the compression end 312 of two stop valves 310 in each retainer 300 By distending when actuator 400 loads driving mounting portion 500, and clamp and compress actuator 400, and then produce to compressing actuator 400 pressure, makes compression actuator 400 with driving the installation of mounting portion 500 to keep impaction state.

Actuator 400 is compressed behind the interval between entering the compression end 312 of two stop valves 310, continuation is held out against forward Stop valve 310, makes stop valve 310 produce displacement with both sides forwards, so as to hold out against driving screw 200；The pressure of two stop valves 310 The size being spaced between tight end 312 is less than the size being spaced between the fixing end 311 of two stop valves 310, when block 100 has pine During dynamic trend, increase one of deformation of stop valve 310 in each retainer 300, between stop valve 310 and driving screw 200 Pressure also become larger therewith, so as to form self-locking state；Meanwhile the deformation of stop valve 310 also can be in compression actuator 400 Micro-bend state, increase compress actuator 400 with driving the thrust of 500 junction of mounting portion.

The central principle of the utility model is, fixing end 311 and the main spiral shell of the stop valve 310 in each retainer 300 Air line distance between the central axes of bar 200 is shortest；When block 100 has loosening trend, according to the spiral shell in main thread hole 120 Line direction, any micro-displacement of the compression end 312 of one of stop valve 310, can all make the stop in each retainer 300 The curvature increase of the compression end 312 of valve 310 and the Distance Shortened of fixing end 311, then the stop valve 310, and then make the stop valve 310 pressure increase.

In the present embodiment, the direction that screws of block 100 is F1 directions, and the release direction of block 100 is F2 directions, works as block 100 when having loosening trend, and in each retainer 300, the stop valve 310 for being closer to screw direction in two stop valves 310 becomes Shape increases, and the pressure between stop valve 310 and driving screw 200 also becomes larger therewith, so as to form self-locking state.Two stop valves The fixing end 311 for being closer to screw the stop valve 310 in direction in 310 is A ends, and the compression end 312 of the stop valve 310 is B ends, For the stop valve 310 under the action of active force N, the change of 310 curvature of stop valve is changed into L2 from original curve L1.

When needing locking gear being installed on driving screw 200, first by the main thread hole of driving screw 200 and block 100 120 are threadedly coupled, and driving screw 200 is penetrated in groove 110, then at least one compression actuator 400 is respectively installed to phase On the driving mounting portion 500 answered, each actuator 400 that compresses is by promoting two stop valves 310 in corresponding retainer 300 Moved to main thread hole 120, the compression end 312 of all stop valves 310 is compressed driving screw 200；When needing locking gear When being dismantled with driving screw 200, first at least one compression actuator 400 is pulled down from the driving mounting portion 500 installed respectively, It then can easily make block 100 realize with driving screw 200 to dismantle.

In the present embodiment, for the ease of installation and removal, the outer circumferential face of block 100 is hexagon, and driving screw 200 is Screw rod part on kingbolt, sub- screw rod are the screw rod part on sub- bolt.

For the ease of compressing the installation of actuator 400, each actuator 400 that compresses is sub- screw rod, each drives mounting portion 500 be sub- threaded hole corresponding with sub- screw rod.Sub- screw rod is threadedly coupled with sub- threaded hole, simple in construction, easy to disassemble and assemble.

Each stop valve 310 is arc, and in each retainer 300, the stop valves 310 of two arcs is towards close to each other Direction bending.The structure makes the part phase mutual connection of the close compression end 312 of two stop valves 310 in each retainer 300 Closely, easy to compress actuator 400 by promote center from stop valve 310 to groove 110 move.

In each retainer 300, stop part 600 is respectively equipped with the opposite flank of two stop valves 310, two opposite The wedge shape closing in 610 towards 100 center of block is formed between the stop part 600 of setting, wedge shape closes up 610 away from block 100 The size of one end of the heart is more than the size for the cross section for compressing actuator 400, and wedge shape closes up 610 close to the one of 100 center of block The size at end compresses actuator 400 through wedge shape closing in 610 less than the size for the cross section for compressing actuator 400.Wedge shape closes up 610 are easy to compression actuator 400 to pass through, after compression actuator 400 passes through wedge shape closing in 610, the size change of wedge-shaped closing in 610 Greatly, then two stop valves 310 are made to be moved to the center of groove 110.

Wedge shape closing in 610 is passed through for compressing actuator 400 along horizontal direction.It is horizontally disposed to compress actuator 400, compresses Actuator 400 makes wedge shape closing in 610 become larger, so that two stop valves 310 are moved to the center of groove 110 through wedge shape closing in 610 It is dynamic.

Driving mounting portion 500 is the side wall upper-side hole for being arranged at block 100, and drives mounting portion 500 to connect with groove 110 It is logical.After compression actuator 400 passes through side wall upper-side hole and penetrates groove 110, the end for compressing actuator 400 passes through wedge shape closing in 610。

In each retainer 300, the opposite flank of two stop parts 600 is plane.The structure causes wedge-shaped closing in 610 vertical section is bar shaped, which makes compression actuator 400 after penetrating between two stop parts 600, two stop parts 600 pairs compress actuator 400 and have clamping force.

The utility model further relates to a kind of application method of locking gear, when needing locking gear being installed on driving screw When on 200, first driving screw 200 is threadedly coupled with the main thread hole 120 of block 100, and driving screw 200 is penetrated groove 110 In, then all compression actuators 400 are respectively installed to and are driven accordingly on mounting portion 500, each actuator 400 that compresses leads to Cross and promote two stop valves 310 in corresponding retainer 300 to be moved to main thread hole 120, make the pressure of all stop valves 310 Tight end 312 compresses driving screw 200；When needing to dismantle locking gear and driving screw 200, first by all compression actuators 400 pull down from the driving mounting portion 500 installed respectively, then driving screw 200 and block 100 are dismantled.

Embodiment 2

It is as shown in Figs. 8 to 11, the locking gear of the present embodiment and the locking gear of embodiment 1 difference lies in：Wedge shape is received Mouth 610 is passed through for compressing actuator 400 along vertical direction.Compress actuator 400 to be vertically arranged, compress actuator 400 and pass through Wedge shape closing in 610, makes wedge shape closing in 610 become larger, so that two stop valves 310 are moved to the center of groove 110.

Driving mounting portion 500 is the bottom outlet being arranged on the bottom wall of groove 110.Compress actuator 400 and penetrate bottom outlet During, the side wall for compressing actuator 400 passes through wedge shape closing in 610.

In each retainer 300, recess 620 is equipped with the opposite flank of two stop parts 600.Recess 620 is half Circle, the structure make it that the vertical section of wedge shape closing in 610 is circle, which passes through two resistances easy to compress actuator 400 Between stopper 600.The central axes for the wedge shape closing in 610 that two recesses 620 are formed are conllinear with driving the central axes of mounting portion 500.

The vertical section of wedge shape closing in 610 in the embodiment 1 of the utility model is alternatively circle, i.e., in each retainer In 300, recess 620 is equipped with the opposite flank of two stop parts 600.Recess 620 is semicircle.

The utility model make use of " air line distance is most short between 2 points " this geometric axiom and " bent member curvature is bigger Counter-force is bigger " this structural mechanical property, sub- screw rod can make jam-packed between stop valve 310 and driving screw 200.Sub- screw rod screws After in place, it can close up in sub- screw rod, wedge shape and realize certain self-locking state between 610, stop valve 310, driving screw 200, so that Realize anti-loose effect.When dismantling the locking gear, sub- screw rod is first screwed out, subsequent operation can be carried out as plain bolt. The utility model is easy to operate, adaptable, reliability is high.

To sum up, the utility model effectively overcomes various shortcoming of the prior art and has high industrial utilization.

The above embodiments are only illustrative of the principle and efficacy of the utility model, new not for this practicality is limited Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model God and all equivalent modifications completed under technological thought or change, should be covered by the claim of the utility model.

Claims (10)

1. A kind of 1. locking gear, for being connected with driving screw (200)；It is characterized in that, the locking gear includes：

   Block (100), one end of the block (100) are equipped with groove (110), and the other end of the block (100) is equipped with Main thread hole (120), the main thread hole (120) connect with the groove (110), and the inner wall of the groove (110) is formed Duct size be more than the main thread hole (120) size, the main thread hole (120) be used for and the driving screw (200) connect；

   At least one retainer (300), all retainers (300) around the inner wall of the groove (110) it is circumferential according to Secondary setting, each retainer (300) include two stop valves (310) being oppositely arranged, each stop valve (310) two End is respectively fixing end (311) and compression end (312), each fixing end (311) of the stop valve (310) and the groove (110) inner wall connection, the compression end (312) of each stop valve (310) and the central axes of the main thread hole (120) it Between horizontal distance be more than the main thread hole (120) radius；

   In each retainer (300), the size being spaced between the compression end (312) of two stop valves (310) is small The size being spaced between the fixing end (311) of two stop valves (310)；

   At least one compression actuator (400), the compression actuator (400) is identical with the quantity of the retainer (300), institute Block (100) is stated to be equipped with for each driving mounting portion (500) for compressing actuator (400) installation, it is described to compress driving Part (400) is by promoting two stop valves (310) in each retainer (300) to be moved to the center of the groove (110) It is dynamic, so that the compression end (312) of all stop valves (310) compresses the driving screw (200).
2. 2. locking gear according to claim 1, it is characterised in that：Each compression actuator (400) is sub- screw rod, Each driving mounting portion (500) is sub- threaded hole corresponding with the sub- screw rod.
3. 3. locking gear according to claim 1, it is characterised in that：Each stop valve (310) is arc, each In the retainer (300), the stop valve (310) of two arcs bends towards direction close to each other.
4. 4. locking gear according to claim 1, it is characterised in that：In each retainer (300), described in two Stop part (600) is respectively equipped with the opposite flank of stop valve (310), between two stop parts (600) being oppositely arranged Form the wedge shape towards the block (100) center to close up (610), the remote block (100) of the wedge shape closing in (610) The size of the one end at center is more than the size of the one end at close block (100) center of the wedge shape closing in (610), described Compress actuator (400) and close up (610) through the wedge shape.
5. 5. locking gear according to claim 4, it is characterised in that：The wedge shape closes up (610) for the compression driving Part (400) is passed through along horizontal direction.
6. 6. locking gear according to claim 5, it is characterised in that：The driving mounting portion (500) is described to be arranged at The side wall upper-side hole of block (100), and the driving mounting portion (500) connects with the groove (110).
7. 7. locking gear according to claim 4, it is characterised in that：The wedge shape closes up (610) for the compression driving Part (400) is passed through along vertical direction.
8. 8. locking gear according to claim 7, it is characterised in that：The driving mounting portion (500) is described to be arranged at Bottom outlet on the bottom wall of groove (110).
9. 9. locking gear according to claim 4, it is characterised in that：In each retainer (300), described in two The opposite flank of stop part (600) is plane.
10. 10. locking gear according to claim 4, it is characterised in that：In each retainer (300), two institutes State and recess (620) is equipped with the opposite flank of stop part (600).