CN207161553U - A kind of positive coupling draw bail and positive coupling component - Google Patents

Abstract

Drive mechanism manufacturing technology field is the utility model is related to, in particular to a kind of positive coupling draw bail and positive coupling component.The structure includes：Bulging joining sleeve and conical screw.Bulging joining sleeve can be connected in the connecting hole of driving shaft shaft coupling and driven shaft shaft coupling, and its inner chamber is taper.Conical screw is connected in bulging joining sleeve, and is matched with the inner chamber of bulging joining sleeve, so that bulging joining sleeve is interference fitted with conical screw.Bolt-connection is directly used relative to conventional rack, convolution space is not present in this connection, does not interfere with the transmission performance of shaft coupling, drastically increases the transmission accuracy of positive coupling, and stationarity of the positive coupling when bearing load.The modular construction is compact, removes and installs conveniently, can save the site installation test time, high transmission accuracy, reliable and stable.

Description

A kind of positive coupling draw bail and positive coupling component

Technical field

Drive mechanism manufacturing technology field is the utility model is related to, couples in particular to a kind of positive coupling and ties Structure and positive coupling component.

Background technology

Positive coupling is suitable for steady load, transmission accuracy requirement height, the working condition without impact shock, using firm Property transmit moment of torsion.Positive coupling requires to be unable to relative motion between each connector, when bearing load also without between any revolution Gap.And require driving shaft and driven shaft when mounted can strict centering, never allow during work shaft coupling that relative skew occurs.Tradition Shaft coupling have a disadvantage that：First, attachment bolt is coordinated with shaft coupling using gap, convolution space be present, influence shaft coupling biography Dynamic characteristic；Second, coupling nut is coordinated with shaft coupling using plane, contact surface is less to produce larger local stress, and is unfavorable for Axial locking；Third, coupling nut is easily loosened in itself using screw positioning stop, screw, shaft coupling stability is influenceed.

Utility model content

The purpose of this utility model is to provide a kind of positive coupling draw bail, high transmission accuracy.

The purpose of this utility model is to provide a kind of positive coupling component, compact-sized, removes and installs convenient transmission Precision is high, reliable and stable.

To achieve these goals, the technical scheme that the utility model embodiment uses is as follows：

A kind of positive coupling draw bail, including：Bulging joining sleeve, bulging joining sleeve can be connected in driving shaft shaft coupling In the connecting hole of device and driven shaft shaft coupling, bulging joining sleeve is hollow structure, and inner chamber is taper；Conical screw, conical screw Matched with the cavity shape size of bulging joining sleeve, behind the inner chamber of conical screw insertion bulging joining sleeve, the outer wall of conical screw It can coordinate with the inwall of bulging joining sleeve and support, so that bulging joining sleeve is interference fitted with connecting hole；And at least two nuts, Nut is respectively used to be threadedly connected to the both ends of conical screw so that conical screw axial locking.

In the utility model preferred embodiment,

Connecting hole is shoulder hole, and connecting hole, which has, to be used to install the first paragraph of bulging joining sleeve and for installing nut second Section, the diameter of second segment are more than the diameter of first paragraph, and each nut is respectively provided with first end face, and first end face is inclined-plane, tiltedly Face is connected to the junction of first paragraph and second segment.

In the utility model preferred embodiment,

The first groove is provided with driving shaft shaft coupling and driven shaft shaft coupling, the second groove, nut lock are provided with nut Locking mechanism can be nested in attaching nut and driving shaft shaft coupling or driven shaft shaft coupling in the first groove and the second groove, so that spiral shell Mother is fixed.

In the utility model preferred embodiment,

Nut has second end face, and the second groove is opened in second end face, and nut lockable mechanism can be from the second groove nested encryptions In the first groove.

In the utility model preferred embodiment,

First groove is arranged at the end face of driving shaft shaft coupling or driven shaft shaft coupling, and nut lockable mechanism can be embedding from the first groove Set is connected to the second groove.

In the utility model preferred embodiment,

Conical screw, which has, to be used for bleed structure derived from the air between conical screw and bulging joining sleeve.

In the utility model preferred embodiment,

Bleed structure include the first passage for being extended internally from the outer wall of conical screw and from the end face of conical screw to Second passage of interior extension, the first passage and the second passage are mutually communicated in the inside of conical screw.

In the utility model preferred embodiment,

The axle of axial line setting of second passage along conical screw, the first passage and the second passage in conical screw Heart line position mutually passes through.

In the utility model preferred embodiment,

The both ends of conical screw offer conical bolt hole respectively.

A kind of positive coupling component, including：Above-mentioned draw bail, and positive coupling body, positive coupling Body includes driving shaft shaft coupling and driven shaft shaft coupling, and draw bail is connected in driving shaft shaft coupling and driven shaft shaft coupling.

The beneficial effects of the utility model are：

Positive coupling draw bail provided by the utility model, including：Bulging joining sleeve and conical screw.Expansion-joints Set can be connected in the connecting hole of driving shaft shaft coupling, and in the connecting hole of driven shaft shaft coupling, the inwall of bulging joining sleeve The inner chamber enclosed is taper, and conical screw matches with the cavity shape size of bulging joining sleeve, conical screw insertion swelling connection Behind the inner chamber of female connector, the outer wall of conical screw can support with the inwall of bulging joining sleeve, so that bulging joining sleeve and connecting hole mistake It is full of cooperation；Nut is respectively used to be threadedly connected to the both ends of conical screw so that conical screw axial locking.Relative to traditional machine Group directly uses bolt-connection, and this connection is not present convolution space, does not interfere with the transmission performance of shaft coupling, be greatly enhanced The transmission accuracy of positive coupling, and stationarity of the positive coupling when bearing load.

Positive coupling component provided by the utility model, including：Above-mentioned draw bail, and positive coupling sheet Body, positive coupling body include driving shaft shaft coupling and driven shaft shaft coupling, draw bail be connected in driving shaft shaft coupling and Driven shaft shaft coupling.The positive coupling modular construction is compact, removes and installs conveniently, can save the site installation test time, passes Dynamic precision is high, reliable and stable.

Brief description of the drawings

, below will be to required use in embodiment in order to illustrate more clearly of the technical scheme of the utility model embodiment Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also To obtain other related accompanying drawings according to these accompanying drawings.

Fig. 1 is the structural representation for the positive coupling draw bail that the utility model first embodiment provides；

Fig. 2 is the structural representation for the positive coupling draw bail that the utility model second embodiment provides；

Fig. 3 is the structural representation for the positive coupling draw bail that the utility model 3rd embodiment provides；

Fig. 4 is the structural representation for the positive coupling component that the utility model fourth embodiment provides.

Icon：100- positive coupling draw bails；110- bulging joining sleeves；120- conical screws；121- conical bolt holes； 130- nuts；131- first end faces；132- second end faces；134- nut lockable mechanisms；The passages of 141- first；142- second is logical Stomata；150- driving shaft shaft couplings；160- driven shaft shaft couplings；200- positive coupling draw bails；The passages of 210- first； 300- positive coupling draw bails；310- screws；400- positive coupling components；410- driving shaft shaft couplings；420- is driven Axle shaft coupling.

Embodiment

It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Generally here described in accompanying drawing and The component of the utility model embodiment shown can be configured to arrange and design with a variety of.

Therefore, the detailed description of the embodiment of the present utility model to providing in the accompanying drawings is not intended to limit requirement below The scope of the utility model of protection, but it is merely representative of selected embodiment of the present utility model.Based in the utility model Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all Belong to the scope of the utility model protection.

It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.

, it is necessary to explanation in the description of the utility model embodiment, term " on ", the orientation or position of the instruction such as " interior " Put relation be based on orientation shown in the drawings or position relationship, or the utility model product using when the orientation usually put Or position relationship, be for only for ease of description the utility model and simplify and describe, rather than instruction or imply signified device or Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limit of the present utility model System.

In description of the present utility model, it is also necessary to which explanation, unless otherwise clearly defined and limited, term " are set Put ", " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, Or it is integrally connected；Can be joined directly together, can also be indirectly connected by intermediary, can be the company of two element internals It is logical.For the ordinary skill in the art, it can understand that above-mentioned term is specific in the utility model with concrete condition Implication.

First embodiment

Refer to Fig. 1, the present embodiment provides a kind of positive coupling draw bail 100, it include bulging joining sleeve 110, Conical screw 120.

Further, bulging joining sleeve 110 can be connected in the connecting hole of driving shaft shaft coupling 150 and driven shaft shaft coupling In the connecting hole of device 160.

Further, above-mentioned bulging joining sleeve 110 is hollow structure.The inwall of bulging joining sleeve 110 encloses interior Chamber is taper.Conical screw 120 matches with the cavity shape size of bulging joining sleeve 110, and conical screw 120 inserts expansion-joints Behind the inner chamber of set 110, the outer wall of conical screw 120 can coordinate with the inwall of bulging joining sleeve 110 to be supported, so that bulging joining sleeve 110 are interference fitted with connecting hole.

By setting bulging joining sleeve 110 in the connecting hole of above-mentioned driving shaft shaft coupling 150 and driven shaft shaft coupling In 160 connecting hole, bulging joining sleeve 110 can be interference fitted with connecting hole, close gapless, empty in the absence of convolution Between, significantly enhance the drive characteristic of shaft coupling.

, can be by driving shaft shaft coupling 150 and driven shaft shaft coupling 160 in the optional embodiment of the utility model one After the alignment of center, while bored in driving shaft shaft coupling 150 and driven shaft shaft coupling 160 and twist above-mentioned connecting hole, to improve driving shaft The Aligning degree of the connecting hole of shaft coupling 150 and driven shaft shaft coupling 160.

Specifically, after driving shaft shaft coupling 150 and the centring of driven shaft shaft coupling 160, driving shaft and driven is twisted with boring The coupling bolt hole of axle, bulging joining sleeve 110 is pushed into process hole, and the inner circle of bulging joining sleeve 110 is taper, squeezes into taper Screw rod 120, bulging joining sleeve 110 contact more preferably with conical screw 120.

It should be understood that the material of above-mentioned bulging joining sleeve 110 does not limit.The material of above-mentioned bulging joining sleeve 110 The material applicatory that existing this area is common can be selected.Alternatively, the material of above-mentioned bulging joining sleeve 110 is stainless steel Material, or other alloy materials.

Further, the both ends of above-mentioned conical screw 120 offer conical bolt hole 121 respectively.

By offering conical bolt hole 121 respectively at the both ends of above-mentioned conical screw 120, conical screw can be easy to 120 and the installation and removal of nut 130.

Specifically, when conical screw 120 is installed in bulging joining sleeve 110, operator can be facilitated to taper spiral shell Bar 120 is installed.Further, by offering conical bolt hole 121 respectively at the both ends of above-mentioned conical screw 120, also Be advantageous to that nut 130 is subsequently installed at the both ends of conical screw 120 or nut 130 is dismantled.

In the utility model other optional embodiments, the both ends of above-mentioned conical screw 120 it can also be provided that its The screw of his shape, facilitate the installation and dismounting of conical screw 120.

Further, Fig. 1 is continued referring to, conical screw 120, which has, to be used for conical screw 120 and bulging joining sleeve Bleed structure derived from air between 110.

Further, in the optional embodiment of the utility model one, bleed structure includes the outer wall by conical screw 120 The first passage 141 to extend internally and the second passage 142 to be extended internally by the end face of conical screw 120, the first ventilation The passage 142 of hole 141 and second is mutually communicated in the inside of conical screw 120.

By setting above-mentioned the first passage 141 and the second passage 142, whole positive coupling connection can be discharged Compressed air inside structure 100, prevent compressed air from influenceing the fitness between part, further improve whole rigid shaft coupling The reliability of the connection of device draw bail 100.So that transmission accuracy improves.

Further, alternatively, the first above-mentioned passage 141 and the second passage 142 are blind hole.Further The shape of ground, the first above-mentioned passage 141 and the second passage 142 is circle.

By the way that above-mentioned the first passage 141 and the second passage 142 are shaped into circle.Not only hold more Easy processing, and good exhaust effect.

Further, axial line of second passage 142 along conical screw 120 is set, and the first passage 141 and second is logical Stomata 142 mutually passes through in the axle center line position of conical screw 120.

In the utility model other optional embodiments, the first above-mentioned passage 141 and the second passage 142 also may be used To be arranged on other positions, as long as the first passage 141 and the second passage 142 can extend to outside so that air is discharged .

Fig. 1 is continued referring to, further, positive coupling draw bail 100 also includes at least two nuts 130, spiral shell Mother 130 is respectively used to be threadedly connected to the both ends of conical screw 120 so that the axial locking of conical screw 120.

Further, connecting hole is shoulder hole, and connecting hole has the first paragraph for being used for installing bulging joining sleeve 110 and is used for The second segment of nut 130 is installed, the diameter of second segment is more than the diameter of first paragraph, and each nut 130 is respectively provided with first end face 131, first end face 131 is inclined-plane, and inclined-plane is connected to the junction of first paragraph and second segment.

In the optional embodiment of the utility model one, the selection of the number of above-mentioned nut 130 is arranged to two, also, One nut 130 is set in one end of nut 130, the other end of nut 130 sets another nut 130, so as to enter Cause to one step the connection of whole positive coupling draw bail 100 reliable and stablize.

Specifically, after conical screw 120 is installed in place, the both ends of conical screw 120 are torqued into nut 130 respectively.

Further, each above-mentioned nut 130 is respectively provided with first end face 131, and first end face 131 is inclined-plane, tiltedly Face is connected to the connecting hole of driving shaft shaft coupling 150 or driven shaft shaft coupling 160.

By the way that the first end face 131 of each above-mentioned nut 130 is disposed as into inclined-plane so that nut 130 is being installed When can better adapt to the locking that slides axially, and contact surface can be expanded, reduce contact stress.Directly used relative to conventional rack Plain nut plane coordinates, and drastically increases the effect of axial locking, is advantageous to improve whole positive coupling draw bail 100 connection is reliable, stability.

Further, the first groove is provided with driving shaft shaft coupling 150 and driven shaft shaft coupling 160, is set on nut 130 The second groove is equipped with, nut lockable mechanism 134 can be nested in attaching nut 130 and driving shaft shaft coupling in the first groove and the second groove 150 or driven shaft shaft coupling 160, so that nut 130 is fixed.

By setting nut lockable mechanism 134, it can effectively prevent nut 130 from loosening.Relative to traditional connection spiral shell Mother is easily loosened in itself using screw positioning stop, screw, influences shaft coupling stability.And by above-mentioned nut lockable mechanism 134 Lockable mechanism is provided in round, can effectively prevent the way moving of nut 130.

Alternatively, nut 130 has second end face 132, and the second groove is opened in second end face 132, nut lockable mechanism 134 Can be from the second groove nested encryptions in the first groove.

Alternatively, the first groove is arranged at the end face of driving shaft shaft coupling 150 or driven shaft shaft coupling 160, nut locking machine Structure 134 can be from the first groove nested encryptions in the second groove.

It should be understood that above two mode can be set simultaneously, or select a setting.

Still optionally further, nut lockable mechanism 134 is circular detent mechanism.Driving shaft shaft coupling 150 and driven shaft connection Groove is provided with axle device 160, circular detent mechanism nested encryptions are in groove.

Alternatively, during installation, after nut 130 presses certain pretightning force installation, using round nut lockable mechanism 134 Lock nut 130, prevent the way moving of nut 130.

Further, alternatively, above-mentioned nut 130 selects counternut, can further adapt to the lock that slides axially Tightly, expand contact surface, reduce contact stress.

Further, alternatively, the end face of nut 130 is provided with multiple blind holes, is further convenient to the dismounting of nut 130 And installation.

Second embodiment

The present embodiment provides a kind of positive coupling draw bail 200, its positive coupling provided with first embodiment The basic structure all same of draw bail 100, institute's difference are that the first passage 210 is taper.

3rd embodiment

The present embodiment provides a kind of positive coupling draw bail 300, its positive coupling provided with first embodiment The basic structure all same of draw bail 100, institute's difference are that the screw 310 that the both ends of screw rod open up respectively is circle.

Fourth embodiment

The present embodiment provides a kind of positive coupling component 400, including：The positive coupling connection provided in first embodiment Binding structure 100, and positive coupling body, positive coupling body include driving shaft shaft coupling 410 and driven shaft shaft coupling 420, positive coupling draw bail 100 is connected in driving shaft shaft coupling 410 and driven shaft shaft coupling 420.

By setting above-mentioned positive coupling draw bail 100 so that the positive coupling component 400 is compact-sized, Remove and install conveniently, the site installation test time can be saved, it is high transmission accuracy, reliable and stable.

In summary, positive coupling draw bail provided by the utility model, including：Bulging joining sleeve and taper spiral shell Bar.Bulging joining sleeve can be connected in the connecting hole of driving shaft shaft coupling, and in the connecting hole of driven shaft shaft coupling, swelling The inner chamber of coupling sleeve is taper.Conical screw is connected in bulging joining sleeve, and is matched with the inner chamber of bulging joining sleeve, so that swollen Tight coupling sleeve is interference fitted with conical screw.By using swelling in the process hole of driving shaft shaft coupling and driven shaft shaft coupling Coupling sleeve coordinates conical screw to be coupled, and directly uses bolt-connection relative to conventional rack, convolution is not present in this connection Space, the transmission performance of shaft coupling is not interfered with, drastically increase the transmission accuracy of positive coupling, and positive coupling Stationarity when bearing load.

Positive coupling component provided by the utility model, including：Above-mentioned draw bail, and positive coupling sheet Body, positive coupling body include driving shaft shaft coupling and driven shaft shaft coupling, draw bail be connected in driving shaft shaft coupling and Driven shaft shaft coupling.The positive coupling modular construction is compact, removes and installs conveniently, can save the site installation test time, passes Dynamic precision is high, reliable and stable.

Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.It should be noted that Arrive：Similar label and letter represents similar terms in following accompanying drawing, therefore, once determined in a certain Xiang Yi accompanying drawing Justice, then it further need not be defined and explained in subsequent accompanying drawing.

Claims (10)

1. A kind of 1. positive coupling draw bail, it is characterised in that including：

   Bulging joining sleeve, the bulging joining sleeve can be connected in the connecting hole of driving shaft shaft coupling and driven shaft shaft coupling, The bulging joining sleeve is hollow structure, and inner chamber is taper；

   Conical screw, the conical screw match with the cavity shape of the bulging joining sleeve, described in the conical screw insertion Behind the inner chamber of bulging joining sleeve, the outer wall of the conical screw can coordinate with the inwall of the bulging joining sleeve to be supported, so that institute Bulging joining sleeve is stated to be interference fitted with the connecting hole；And at least two nuts, the nut are respectively used to be threadedly connected to The both ends of the conical screw are so that the conical screw axial locking.
2. 2. positive coupling draw bail as claimed in claim 1, it is characterised in that

   The connecting hole is shoulder hole, and the connecting hole, which has, to be used to install the first paragraph of the bulging joining sleeve and for installing The nut second segment, the diameter of the second segment are more than the diameter of the first paragraph, and each described nut is respectively provided with first End face, the first end face are inclined-plane, and the inclined-plane is connected to the junction of the first paragraph and the second segment.
3. 3. positive coupling draw bail as claimed in claim 2, it is characterised in that

   The first groove is provided with the driving shaft shaft coupling and the driven shaft shaft coupling, second is provided with the nut Groove, nut lockable mechanism can be nested in the connection nut and the driving shaft shaft coupling in first groove and second groove Device or the driven shaft shaft coupling, so that the nut is fixed.
4. 4. positive coupling draw bail as claimed in claim 3, it is characterised in that

   The nut has second end face, and second groove is opened in the second end face, and the nut lockable mechanism can be from institute The second groove nested encryptions are stated in first groove.
5. 5. positive coupling draw bail as claimed in claim 3, it is characterised in that

   First groove is arranged at the end face of the driving shaft shaft coupling or the driven shaft shaft coupling, the nut lockable mechanism Can be from the first groove nested encryptions in second groove.
6. 6. the positive coupling draw bail as described in claim any one of 1-5, it is characterised in that the conical screw has For by bleed structure derived from the air between the conical screw and the bulging joining sleeve.
7. 7. positive coupling draw bail as claimed in claim 6, it is characterised in that the bleed structure is included by the cone The first passage that the outer wall of shape screw rod extends internally and the second passage to be extended internally by the end face of the conical screw, institute State the first passage and second passage is mutually communicated in the inside of the conical screw.
8. 8. positive coupling draw bail as claimed in claim 7, it is characterised in that second passage is along the taper The axle center line position phase of the axial line setting of screw rod, first passage and second passage in the conical screw Pass through.
9. 9. positive coupling draw bail as claimed in claim 1, it is characterised in that open respectively at the both ends of the conical screw Provided with conical bolt hole.
10. A kind of 10. positive coupling component, it is characterised in that including：Positive coupling as described in claim any one of 1-9 Draw bail, and positive coupling body, the positive coupling body include driving shaft shaft coupling and driven shaft shaft coupling, The positive coupling draw bail is connected in the driving shaft shaft coupling and the driven shaft shaft coupling.