CN105570324A - Double-nut coaxial connecting mechanism - Google Patents
Double-nut coaxial connecting mechanism Download PDFInfo
- Publication number
- CN105570324A CN105570324A CN201410598872.2A CN201410598872A CN105570324A CN 105570324 A CN105570324 A CN 105570324A CN 201410598872 A CN201410598872 A CN 201410598872A CN 105570324 A CN105570324 A CN 105570324A
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- CN
- China
- Prior art keywords
- nut
- transmission
- drive wheel
- transmission shaft
- locking nut
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention relates to a double-nut coaxial connecting mechanism which is reasonable in structure, capable of being suitable for the forward and reverse rotation alternate torque, high in coaxial rotation accuracy and reliability, free of vain return stroke and capable of efficiently transmitting the torque and saving space. Through control over the machining accuracy of a transmission wheel (1) and a transmission shaft (4), the connecting accuracy of the transmission wheel (1) and the transmission shaft (4) can be controlled. The large static friction force is generated on the attached faces of the transmission wheel (1) and the transmission shaft (4) through the screwing force of double nuts, and the torque is transmitted completely through the friction force. In addition, due to the fact that fastening screws bear tension and the screw pitch is microcosmically lengthened, the self-locking function is achieved, and looseness is unlikely to happen.
Description
Technical field
The present invention relates at mechanical field, especially in precision manufactureing field, compared with the connecting modes such as a kind of with traditional key, pin, clockwise and anticlockwise alternate torque can be adapted to, there is high coaxial rotating precision, high reliability, without backlash journey, high efficiency transmitting torque, joint space-efficient coaxial double-nut coupling mechanism.
Background technique
Take turns and carry out coaxial moment of torsion transmission between axle, modal method is undertaken by modes such as key, pin, screw thread, interference fit.But these connecting modes often also exist deficiency, as key or pin connect, by shear transfer moment of torsion, when the alternate torque of long-time bearing clockwise and anticlockwise, shear gap can be produced gradually, and along with the increase in gap, shearing impact is increasing, until damage.Scyewed joint is only suitable for the moment of torsion of carrying unidirectional delivery and needs pre-load nut, takes up room larger.Interference fit is then difficult to dismounting, is not suitable for the mechanism often carrying out dismantling adjustment.Therefore, along with the development of sophisticated manufacturing, require to connect precision higher, work more reliably, more saves the new connection technique in space-efficient.
Summary of the invention
The object of the present invention is to provide a kind of rational in infrastructure, clockwise and anticlockwise alternate torque can be adapted to, there is high coaxial rotating precision, high reliability, without backlash journey, high efficiency transmitting torque, save space-efficient coaxial double-nut coupling mechanism.
Goal of the invention of the present invention is achieved in that a kind of coaxial double-nut coupling mechanism comprises drive wheel l, transmission nut 2, locking nut 3, transmission shaft 4, fastening screw trip bolt 5, joint bolt 6 etc.
The shaft part that the center hole of drive wheel l is corresponding on transmission shaft 4 is coordinated and installs.Transmission shaft 4, drive wheel l adopt Spielpassung, and its quality of fit depends on the operating accuracy requirement of whole mechanism.By controlling the machining accuracy of drive wheel l, transmission shaft 4, the object controlling it and connect precision can be reached.
Transmission nut 2 is screwed in the helical thread portion of transmission shaft, until drive wheel l seam bottom surface is close in the bottom surface of transmission nut 2.Then in 6 step troughs of transmission nut 2, joint bolt 6 is tightened.Now, the screwing force of joint bolt 6 makes transmission nut 2 produce very large stiction with the faying surface of drive wheel l, and joint bolt 6 only bears pulling force after tightening.Helical thread portion locking nut 3 being screwed in transmission shaft 4 is more firmly tightened, until transmission nut 2 is close to above in locking nut 3 bottom surface.Then in 6 step troughs of locking nut 3, fastening screw trip bolt 5 is tightened.Now, the power that screws of locking nut 3 and the screwing force of fastening screw trip bolt 5 make the faying surface of locking nut 3 and transmission nut 2 produce very large stiction, and fastening screw trip bolt 5 then only bears pulling force.Meanwhile, the power that screws of locking nut 3 makes the screw thread of on transmission shaft 4 bear very large pulling force and makes pitch produce microdeformation, forms self-lock force and locking nut 3 can not be unclamped voluntarily.
If now transmission shaft 4 drives drive wheel l to rotate, then the transmission of moment of torsion is the screw thread self-locking relation of being assembled rear formation by transmission shaft 4 and transmission nut 2, locking nut 3, is delivered on transmission nut 2 and locking nut 3; Drive wheel l is delivered to the frictional force of self-locking nut 3 surface of contact again by the frictional force of transmission nut 2 and the seam bottom surface of drive wheel l, transmission nut 2.Fastening screw trip bolt 5 and joint bolt 6 only bear pulling force.Elongate because pulling force makes the pitch of screw produce microcosmic, deformed threads self-locking, makes screw in use release.
The coaxial double-nut coupling mechanism of a kind of novelty of the present invention compares traditional connection technique, and tool has the following advantages:
L, with key connecting, sell joint transmission torque ratio comparatively, transmitting torque becomes frictional force from shearing force, therefore due to generation shear gap and cause damage, can not add reliable transmission, improve the working life of mechanism.
2, compare with scyewed joint driving torque, one is the alternate torque that can transmit clockwise and anticlockwise checker, and two is to obtain the connection precision higher than screw-thread fit.
3, with by interference fit driving torque compare, coaxial double-nut coupling mechanism application area of the present invention is more extensive, is specially adapted to the workplace often will dismantled, often adjust.
Accompanying drawing explanation
Figure l is the plan view of the coaxial double-nut coupling mechanism of a kind of novelty of the present invention;
Fig. 2 is the main sectional view of the coaxial double-nut coupling mechanism of a kind of novelty of the present invention.
In figure: 1, drive wheel; 2, transmission nut; 3, locking nut; 4, transmission shaft; 5, fastening screw trip bolt; 6, joint bolt.
Embodiment
As shown in Figure 1, 2, a kind of coaxial double-nut coupling mechanism of novelty comprises drive wheel l, transmission nut 2, locking nut 3, transmission shaft 4, fastening screw trip bolt 5, joint bolt 6.Drive wheel l is provided with seam; Transmission shaft 4 is shaped with the screw thread matched with transmission nut 3, locking nut 4; First the shaft part that the center hole of drive wheel l is corresponding on transmission shaft 4 is coordinated and install.Transmission shaft 4, drive wheel l adopt Spielpassung.By controlling the machining accuracy of drive wheel l, transmission shaft 4, the object controlling it and connect precision can be reached.Transmission nut 2 is screwed in the helical thread portion of transmission shaft 4, until drive wheel l seam bottom surface is close in the bottom surface of transmission nut 2.Then in 6 step troughs of transmission nut 2, joint bolt 6 is tightened.Now, the screwing force of joint bolt 6 makes transmission nut 2 produce very large stiction with the faying surface of drive wheel l, and the helical thread portion of joint bolt 6 bears pulling force.Helical thread portion locking nut 3 being screwed in transmission shaft 4 is more firmly tightened, until transmission nut 2 is close to above in locking nut 3 bottom surface.Then in 6 step troughs of locking nut 3, fastening screw trip bolt 5 is tightened.Now, the power that screws of locking nut 3 and the screwing force of fastening screw trip bolt 5 make the faying surface of locking nut 3 and transmission nut 2 produce very large stiction, and fastening screw trip bolt 5 then only bears pulling force.Meanwhile, the power that screws of locking nut 3 makes the screw thread on transmission shaft 4 bear very large pulling force and makes pitch produce microdeformation, forms self-lock force and locking nut 3 can not be unclamped voluntarily.
After completing above assembling, the transmission of moment of torsion is realized by frictional force completely.When transmission shaft 4 drives drive wheel l to rotate, the transmission of moment of torsion is the screw thread self-locking relation of being assembled rear formation by transmission shaft 4 and transmission nut 2, locking nut 3, is delivered on transmission nut 2 and locking nut 3; Drive wheel l is delivered to the frictional force of self-locking nut 3 surface of contact again by the frictional force of transmission nut 2 and the seam bottom surface of drive wheel l, transmission nut 2.Fastening screw trip bolt 5 and joint bolt 6 only bear pulling force.Elongate because pulling force makes the pitch of screw produce microcosmic, deformed threads self-locking, makes screw in use release.
Claims (2)
1. a coaxial double-nut coupling mechanism, comprises drive wheel (1), transmission nut (2), locking nut (3), transmission shaft (4), fastening screw trip bolt (5), joint bolt (6); It is characterized in that: described drive wheel (1) upper surface has seam, uniform 6 screws of seam internal surface; Described transmission nut (2) center has screw, and outer rim has 6 ladder elongated holes identical with drive wheel (1) uniform screwhole diameter, uniform 6 screws of inner surface; Described locking nut (3) center has the screw identical with transmission nut (2), and outer rim has 6 ladder elongated holes identical with the upper uniform diameter of screw of transmission nut (2); Described transmission shaft (4) has the screw thread matched with transmission nut (2) locking nut (3) center screw; Described drive wheel (1) center hole adopts highi degree of accuracy to coordinate with the upper corresponding shaft part of transmission shaft (4), to reach the requirement connecting precision; Described transmission nut (2) locking nut (3) screws in the helical thread portion of transmission shaft 4, until drive wheel (1) seam bottom surface is close in the bottom surface of transmission nut (2), then in 6 step troughs of transmission nut (2), tighten joint bolt (6), in 6 step troughs of locking nut (3), tighten fastening screw trip bolt (5); The screwing force of described joint bolt (6) makes transmission nut (2) produce very large stiction with the seam faying surface of drive wheel (1), and joint bolt (2) only bears pulling force; The screwing force of described fastening screw trip bolt (5) makes the faying surface of locking nut 3 and transmission nut 2 produce very large stiction, and the helical thread portion of fastening screw trip bolt (5) bears pulling force; Screw thread on described transmission shaft (4) bears transmission nut (2) and locking nut (3) screwing force, thus produce very large pulling force and make pitch produce microdeformation, form self-lock force and locking nut (3) can not be unclamped voluntarily; Described fastening screw trip bolt (5) and joint bolt (6) elongate because tension stretch makes pitch produce microcosmic, and deformed threads self-locking is not easily released; The moment of torsion that described double nut coupling mechanism transmits, is transmitted by frictional force.
2. a kind of coaxial double-nut coupling mechanism according to claim l, it is characterized in that: described transmission nut (2), locking nut (3) adopt suitable material, and increase linking intensity and joint stiffness through suitable heat treatment process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410598872.2A CN105570324A (en) | 2014-10-31 | 2014-10-31 | Double-nut coaxial connecting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410598872.2A CN105570324A (en) | 2014-10-31 | 2014-10-31 | Double-nut coaxial connecting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105570324A true CN105570324A (en) | 2016-05-11 |
Family
ID=55880807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410598872.2A Pending CN105570324A (en) | 2014-10-31 | 2014-10-31 | Double-nut coaxial connecting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105570324A (en) |
-
2014
- 2014-10-31 CN CN201410598872.2A patent/CN105570324A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160511 |