CN203463462U

CN203463462U - Anti-loosening gasket

Info

Publication number: CN203463462U
Application number: CN201320435459.5U
Authority: CN
Inventors: 顾希成; 邓志豪; 强晓彬
Original assignee: BNA AUTOMOTIVE STEEL SHEETS Co Ltd
Current assignee: BNA AUTOMOTIVE STEEL SHEETS Co Ltd
Priority date: 2013-07-22
Filing date: 2013-07-22
Publication date: 2014-03-05
Anticipated expiration: 2023-07-22

Abstract

The utility model discloses an anti-loosening gasket. The anti-loosening gasket comprises a first portion and a second portion, the first portion and the second portion are spliced to form the anti-loosening gasket, and the center of the anti-loosening gasket is provided with a central hole. On the premise of achieving the fastening of a nut, due to a spit type design and compared with an integrated type gasket in the prior art, the anti-loosening gasket has a more flexible and convenient installing and dismantling mode and can achieve rapid and timely replacement of the anti-loosening gasket without needing a user to move a speed reducer and a motor.

Description

A kind of check washer

Technical field

The utility model relates to a kind of fastener locking element, relates in particular to a kind of pad.

Background technique

At present, driving mechanism mainly comprises motor, coupling and speed reducer, conventionally motor is connected with speed reducer by coupling, when motor is connected with coupling, owing to adopting taper fit between the output shaft of motor and coupling, need to take corresponding measure, for example, use nut, thereby to guarantee that the tightening state of coupling prevents that its output shaft from motor from deviating from.As shown in Figure 1, at the tapered end of motor output shaft, thread section 1 is set, and attaching nut 2 is fastening, pad 3 is installed loosening to prevent nut 2 simultaneously.Fig. 2 has shown the structure of pad, and Fig. 3 has shown the state when keyway garnishment life of pad is ruptured.As shown in Figure 2, annular gasket 3 is provided with keyway 31, and keyway button 32 is located at keyway 31 places, and extends towards the one side of pad along the axial direction of pad.When speed reducer and motor operation, the rotation of motor and speed reducer inevitably can cause vibration to a certain degree, as shown in Figure 3, the breaking releasing that such vibration can cause keyway button 32 to occur from pad keyway 31 places, once keyway button breaking releasing will cause the loosening of nut, reduce the fastening effect of nut, except the breaking releasing of keyway button, the damage of pad lamellar body also can reduce the tautness of nut, even can cause the damage of motor coupler, when facing this situation, just need to change in time pad.

Fig. 4 has shown the installment state of speed reducer arbor and motor output shaft.As shown in Figure 4, spacing x between speed reducer 4 arbors and motor 5 output shafts is quite little, be only 10mm, the thickness of nut 2 reaches 25mm, when the raw fracture of keyway garnishment need to be changed pad, because spacing is too little, nut is difficult to take out, now, need for the pad 3 damaging, to change after mobile motor 5, in addition, because speed reducer and motor removing also need to adjust coaxality between motor and coupling reductor shaft and concentricity after installing to guarantee the stable operation of driving mechanism, thereby whole pad replacing process need several hours, overhaul efficiency is seriously low, it has greatly affected the normal operation of driving mechanism.

Model utility content

The purpose of this utility model is to provide a kind of check washer, it had both guaranteed nut check effect, can without mobile speed reducer and motor in the situation that, realize rapidly in time the replacing maintenance that damages pad again, reduce widely the required time of pad replacing, significantly promoted overhaul of the equipments efficiency.

In order to achieve the above object, the utility model proposes a kind of check washer, it comprises that a first portion and a second portion ，Gai first portion and second portion splice to form check washer, and this check washer center has center hole.

Because check washer of the present utility model is spliced by first portion and second portion, therefore, when this check washer is damaged, without speed reducer and motor are removed, also without the speed reducer of reinstalling after movement and motor are carried out to adjusting again of concentricity and coaxality, only need nut to unscrew a little, adopt and the check washer of damage to be cut off to taking-up as cutting tools such as cutting machine or junior hacksaw, then the first portion of check washer and second portion are spliced at the thread section place of motor output end, make thread section be positioned at the center hole of check washer, last fastening nut is also locked flange to check washer and is processed, the replacing that can complete like this pad is installed.Check washer of the present utility model is when realizing fastening anti-loosing effect, its replacing repair time shortens greatly, compared to the integral ring-shaped pad repair time of required about 4 hours of prior art, its whole maintenance process only needed about 30 minutes, and this very big degree has improved working efficiency.

In order to prevent that check washer from relatively moving at both splicing surface places in first portion and second portion, a kind of preferred embodiment in, in the first portion of check washer of the present utility model, there is outward extending tenon, and on its second portion, there is inwardly recessed groove, outward extending tenon matches with inwardly recessed groove, described first portion and second portion splice by tenon and the groove of this coupling, to form check washer.

In above-mentioned optimal technical scheme, the setting of the shape of tenon and/or groove and quantity is not limited.

Further, the tenon in check washer described in the utility model is disc-shaped tenon, and the form fit of the shape of groove and disc-shaped tenon.

Further, the center of circle of disc-shaped tenon in check washer described in the utility model and the distance between the center of circle of check washer are 35mm.

In another preferred embodiment, the outer rim of check washer described in the utility model is provided with a radially inside recessed keyway, and the keyway button that an axial direction along check washer extends is connected with this keyway.

Advantageously, the thickness of check washer of the present utility model is 1.8mm, to increase the bulk strength of pad.

Preferably, the first portion of check washer of the present utility model and second portion are respectively done for oneself respectively, and half is round.First portion and second portion are adopted respectively to semicircle setting, be convenient to manufacturing in early stage.

Check washer described in the utility model is being realized under the prerequisite of tightening nut, owing to having adopted split-type design, compare with the continuous single piece type pad of prior art, it has the mode that mounts and dismounts easily more flexibly, without mobile speed reducer and motor in the situation that, can realize changing in time fast of check washer.

In a kind of optimal technical scheme of the present utility model, owing to having adopted the setting of tenon in first portion, and on second portion, be provided with the groove that shape matches with it, make first portion and second portion there is more firmly splicing effect.

Accompanying drawing explanation

Fig. 1 is provided with the structural representation of the motor output shaft of nut and pad in prior art.

Fig. 2 is the structural representation of prior art Intermediate gasket.

Phase diagram when Fig. 3 is the raw breaking releasing of the keyway garnishment of the pad shown in Fig. 2.

Fig. 4 is the installment state figure of speed reducer arbor and motor output shaft in prior art.

Fig. 5 is the structural representation of check washer described in the utility model under a kind of mode of execution.

Fig. 6 is the structural representation of the check washer shown in Fig. 4 under splicing state.

Fig. 7 is that the check washer shown in Fig. 4 is at the structural representation of overlooking under state.

Fig. 8 is the phase diagram of the check washer shown in Fig. 4 in assembly process.

Fig. 9 is the phase diagram of the check washer shown in Fig. 4 after assembling completes.

Embodiment

Below in conjunction with Figure of description and specific embodiment, check washer described in the utility model is made further explanation and description.

Fig. 5 has shown the structure of check washer described in the utility model under a kind of mode of execution, and Fig. 6 has shown the structure of above-mentioned check washer under splicing state.As shown in Figure 5 and Figure 6, check washer under this kind of mode of execution comprises the first semicircular ring 11 and the second semicircular ring 12, on one end of the first semicircular ring 11, there is outward extending tenon 13, this tenon is set to disc-shaped, on its other end, there is inwardly recessed groove 14, the cross section of groove 14 is similar round shape, and at the two ends of the second semicircular ring 12, there is respectively groove 14 ' and tenon 13 ' that tenon 13 and groove 14 shapes with the first semicircular ring match, to realize the interlock of mating of the first semicircular ring 11 and the second semicircular ring 12, both are spliced to form the check washer of annular closed as shown in Figure 6.As shown in Figure 6, this check washer center has center hole 15, under normal assembling condition, the threaded end of motor output shaft is located in this center hole 15, outer rim in the first semicircular ring 11 is provided with radially inner keyway 16, and extends and be provided with the keyway button 17 being connected with keyway 16 along the axial direction of check washer at keyway 16 places.

In addition, outward extending tenon or inside recessed groove also can be only set in one end of the first semicircular ring, correspondingly, groove or the tenon that shape matches be with it set in one end of the second semicircular ring and also can realize the first semicircular ring and the second semicircular ring interlock splicing.

In addition, the thickness of above-mentioned check washer is set to 1.8mm, to increase the intensity of keyway button and the keying strength of disc-shaped tenon.

It should be noted that, although in the above-described embodiment, outward extending tenon is set to disc-shaped tenon,, in some other mode of execution, outward extending tenon also can be set to square or rectangle etc., and other can realize the shape of identical function; Meanwhile, in order to realize better firmly splicing effect, also can be arranged side by side two or more outward extending tenons and with it the groove of phase form fit to realize interlock splicing.

Fig. 7 has shown that above-mentioned check washer is in overlooking the structure under state.As shown in Figure 7, in order to make nut can just in time cover two disc-shaped tenons 13,13 ' under assembling condition, the distance d between the center of circle of disc-shaped tenon and the center of circle of check washer is set to 35mm.Apparently, under some other mode of execution, the size of disc tenon diameter, the size of the location in the center of circle and pad diameter all needs to adjust accordingly according to the size of reality nut used.

In actual production process, when check washer occurs that damage or the raw breaking releasing of keyway garnishment need to be changed, as shown in Figure 8 and Figure 9, after only needing nut 18 to unscrew, utilizing cutting tool will damage pad takes out, then at nut 18, unscrew under state, the first semicircular ring 11 and the second semicircular ring 12 are spliced to form to check washer, make the threaded end 19 of motor output shaft be positioned at the center hole of this pad, last fastening nut 18 by check washer gib nut, the final assembling condition of check washer as shown in Figure 9.Due in said process, because without mobile motor and speed reducer, thus also just avoided reinstalling the required adjustment of carrying out concentricity and coaxality after motor and speed reducer, thus greatly reduced the time of changing maintenance.

Be noted that above enumerate only for specific embodiment of the utility model, obviously the utility model is not limited to above embodiment, has many similar variations thereupon.If all distortion that those skilled in the art directly derives or associates from the disclosed content of the utility model, all should belong to protection domain of the present utility model.

Claims

1. a check washer, is characterized in that, comprising: a first portion and a second portion, and described first portion and second portion splice to form described check washer, and this check washer center has center hole.

2. check washer as claimed in claim 1, it is characterized in that in described first portion, thering is outward extending tenon, on described second portion, there is inwardly recessed groove, described groove mates with tenon, and described first portion and second portion splice by tenon and the groove of this coupling.

3. check washer as claimed in claim 2, is characterized in that, described tenon is disc-shaped tenon, the form fit of the shape of described groove and disc-shaped tenon.

4. check washer as claimed in claim 3, is characterized in that, the distance between the center of circle of described disc-shaped tenon and the center of circle of check washer is 35mm.

5. check washer as claimed in claim 1, is characterized in that, its outer rim is provided with a radially inside recessed keyway, and the keyway button that an axial direction along check washer extends is connected with this keyway.

6. check washer as claimed in claim 1, is characterized in that, the thickness of described check washer is 1.8mm.

7. check washer as claimed in claim 1, is characterized in that, described first portion and second portion are respectively done for oneself respectively, and half is round.