CN110873127A - Buffer coupling - Google Patents
Buffer coupling Download PDFInfo
- Publication number
- CN110873127A CN110873127A CN201911086616.4A CN201911086616A CN110873127A CN 110873127 A CN110873127 A CN 110873127A CN 201911086616 A CN201911086616 A CN 201911086616A CN 110873127 A CN110873127 A CN 110873127A
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- CN
- China
- Prior art keywords
- shaft
- spline
- platform
- driven
- sleeve
- Prior art date
- 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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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D7/00—Slip couplings, e.g. slipping on overload, for absorbing shock
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
- F16D3/06—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement
Abstract
The invention discloses a buffer coupling, which comprises a driving shaft, an intermediate shaft sleeve, a steel ball array, a screw, a driven shaft spline sleeve and a driven shaft, wherein the intermediate shaft is fixedly connected with the driving shaft; the steel ball array is pre-compressed at the original position and used for balancing the limit transmission torque of the mechanism, when the steel ball array is acted by the impact torque, the steel ball array is further compressed to generate axial displacement, corresponding to circumferential rotation motion, so that a rotation speed difference is generated between the driven shaft and the driving shaft, the transmission time of the impact torque is prolonged, the peak value of the impact torque is reduced, and the safety of the transmission shaft and each part in a transmission system is effectively protected.
Description
Technical Field
The invention relates to a buffering coupler, and belongs to the technical field of machinery.
Background
The coupling belongs to a mechanical universal part and is a mechanical part which is used for connecting a driving shaft and a driven shaft in different mechanisms and enabling the driving shaft and the driven shaft to rotate together to transmit torque. The existing coupling rigidly connects the driving shaft and the driven shaft, but when the driving shaft is started, the driving shaft can generate impact load due to the action of inertia load of the driven part connected with the driven shaft, so that a large impact moment is formed, and in addition, when the driven part connected with the driven shaft is subjected to the action of the impact load, the rigid connection between the driving shaft and the driven shaft can also form a large impact moment. Easily causing damage to the coupling or related transmission components.
Disclosure of Invention
In order to overcome the defects, the invention provides a buffer coupling, which adopts the technical scheme as follows:
a buffer coupling comprises a driving shaft, an intermediate shaft sleeve, a steel ball array, a screw, a driven shaft spline sleeve and a driven shaft;
a spline is processed on the outer surface of the left end cylinder of the driving shaft to form a driving shaft spline shaft; the middle shaft comprises a middle shaft first shaft table, a middle shaft second shaft table, a middle shaft third shaft table and a guide pillar; spline grooves are processed in the first shaft platform of the intermediate shaft to form an internal spline of the intermediate shaft, the spline shaft of the driving shaft is inserted into the internal spline of the intermediate shaft to form sliding fit, and the intermediate shaft moves axially relative to the driving shaft; the right end of the intermediate shaft second shaft platform is connected with the intermediate shaft first shaft platform, the left end of the intermediate shaft second shaft platform is connected with the right end of the intermediate shaft third shaft platform, and a multi-head spiral line is processed on the circumferential outer surface of the intermediate shaft second shaft platform to form an intermediate shaft spiral line; the left end of the third pillow block of the intermediate shaft is connected with the right end of the guide pillar;
the inner side of the right side of the middle shaft sleeve is provided with a multi-start helical line to form a helical line in the middle shaft sleeve, the helical line in the middle shaft sleeve and the helical line of the middle shaft are mutually screwed to form thread transmission, and the helical line of the middle shaft realizes axial movement while forming rotation in the helical line in the middle shaft sleeve;
a spline is processed on the outer surface of a right-end cylinder of the driven shaft to form a driven shaft spline shaft; the driven shaft spline housing comprises a driven shaft spline housing first shaft platform, a driven shaft spline housing second shaft platform and a driven shaft spline housing third shaft platform; a cylindrical hole is processed in the right end of the spline housing of the driven shaft, a guide pillar seat is formed and used for inserting a guide pillar, and the guide pillar seat form clearance fit; the driven shaft spline housing first boss is inserted into the inner hole at the left end of the middle shaft sleeve, and the circumferential outer surface of the driven shaft spline housing first boss is matched with the inner hole at the left end of the middle shaft sleeve; the driven shaft spline housing second shaft platform forms an installation flange of a driven shaft spline housing, the driven shaft spline housing second shaft platform and the middle shaft sleeve form reliable connection through screws, and a driven shaft spline housing internal spline is processed inside the driven shaft spline housing third shaft platform; the driven shaft spline shaft and the driven shaft spline sleeve internal spline are in tight and reliable connection;
the steel ball array is arranged in a space between the guide pillar and the middle shaft sleeve, the right end of the steel ball array is abutted against the left end of the third shaft table of the middle shaft, and the left end of the steel ball array is abutted against the right end of the first shaft table of the spline sleeve of the driven shaft.
The steel ball arrays are reasonably arranged through steel balls, the elastic coefficient and the mutual friction condition of the steel ball arrays are adjusted, the impact torque and the impact energy received by the buffer coupling are absorbed through the elastic deformation of the steel ball arrays, and the impact energy received by the buffer coupling is consumed through the mutual friction among the steel balls.
The invention achieves the following beneficial effects:
the steel ball group of the invention is precompressed at the original position and is used for balancing the rated torque of the buffer coupling. In the starting process of the driving shaft, due to the effect of inertia load of a driven part connected with the driven shaft, the driving shaft can form a starting torque far larger than the rated torque of the buffer coupling, the driving shaft drives the intermediate shaft to rotate through the driving shaft spline shaft and the intermediate shaft internal spline, screwing transmission is generated between the internal spiral line of the intermediate shaft sleeve and the intermediate shaft spiral line, an axial compression force larger than the pre-compression force of the steel ball array is formed, the intermediate shaft further compresses the steel ball array through the left end step of the intermediate shaft third shaft platform, meanwhile, the intermediate shaft generates axial movement leftwards relative to the driving shaft through sliding fit formed between the intermediate shaft internal spline and the driving shaft spline shaft, at the moment, the compression force applied to the steel ball array and the driving shaft starting torque are balanced through the axial force formed by screwing between the internal spiral line of the intermediate shaft sleeve and the intermediate shaft spiral line, in the process, due, axial displacement is generated, corresponding to circumferential rotation motion, so that a rotation speed difference is generated between the driven shaft and the driving shaft, the transmission time of impact torque is prolonged, the peak value of starting torque is reduced, and the safety of the transmission shaft and each part in a transmission system is effectively protected; when the driven shaft and the driven part connected with the driven shaft are driven by the driving shaft, the rotating speed is gradually improved, the inertia moment is gradually reduced, the working torque of the buffer coupling is also gradually reduced, the middle shaft generates relative rotation between the spiral line in the middle shaft sleeve and the spiral line of the middle shaft under the action of the axial compression force of the steel ball array, meanwhile, the middle shaft generates axial movement towards the right side relative to the driving shaft through the sliding fit formed between the internal spline of the middle shaft and the spline shaft of the driving shaft, the right end step of the third shaft platform of the middle shaft gradually approaches to the left side of the inner side of the right end of the middle shaft sleeve, and at the moment, the axial compression force applied to the steel ball array and the axial force formed by the screwing between; when the working torque of the buffer coupling is equal to or smaller than the rated torque, the right end step of the third pillow block of the intermediate shaft gradually abuts against the left side of the inner side of the right end of the intermediate shaft sleeve, and at the moment, the axial compression force applied to the steel ball array is equal to the original pre-compression force; when the driven part connected with the driven shaft is acted by impact torque and the impact torque is larger than the rated torque of the buffer coupling, the driven shaft and the driven part connected with the driven shaft drive the middle shaft sleeve to slow down the rotation speed through the driven shaft spline shaft and the driven shaft spline sleeve inner spline, the screwing transmission is generated between the middle shaft sleeve inner spiral line and the middle shaft spiral line to form axial compression force larger than the steel ball array pre-compression force, the middle shaft further compresses the steel ball array through the left end step of the middle shaft third shaft platform, meanwhile, the middle shaft generates axial movement leftwards relative to the driving shaft through the sliding fit formed between the middle shaft inner spline and the driving shaft spline shaft, at the moment, the compression force applied to the steel ball array and the impact torque applied to the driven shaft are balanced through the axial force formed by the screwing between the middle shaft sleeve inner spiral line and the, because the spiral-connection transmission generated between the inner spiral line of the intermediate shaft sleeve and the spiral line of the intermediate shaft generates axial displacement, corresponding to circumferential rotation motion, the rotating speed difference is generated between the driven shaft and the driving shaft, the transmission time of the impact torque is prolonged, the peak value of the impact torque is reduced, and the safety of each part in the transmission shaft and the transmission system is effectively protected.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, a buffer coupling comprises a driving shaft 1, an intermediate shaft 2, an intermediate shaft sleeve 3, a steel ball array 4, a screw 5, a driven shaft spline housing 6 and a driven shaft 7;
a spline is processed on the outer surface of a cylinder at the left end of the driving shaft 1 to form a driving shaft spline shaft 1-1; the middle shaft 2 comprises a middle shaft first shaft table 2-1, a middle shaft second shaft table 2-3, a middle shaft third shaft table 2-5 and guide columns 2-6; spline grooves are processed in the first pillow block 2-1 of the intermediate shaft to form an internal spline 2-2 of the intermediate shaft, the spline shaft 1-1 of the driving shaft is inserted into the internal spline 2-2 of the intermediate shaft and forms sliding fit, and the intermediate shaft 2 axially moves relative to the driving shaft 1; the right end of the intermediate shaft second shaft platform 2-3 is connected with the right end of an intermediate shaft first shaft platform 2-1, the left end of the intermediate shaft second shaft platform is connected with the right end of an intermediate shaft third shaft platform 2-5, and a multi-head spiral line is processed on the circumferential outer surface of the intermediate shaft second shaft platform 2-3 to form an intermediate shaft spiral line 2-4; the left end of the middle shaft third shaft platform 2-5 is connected with the right end of the guide pillar 2-6;
a multi-start spiral line is processed on the inner side of the right side of the middle shaft sleeve 3 to form a middle shaft sleeve inner spiral line 3-1, the middle shaft sleeve inner spiral line 3-1 and the middle shaft spiral line 2-4 are mutually screwed to form thread transmission, and the middle shaft spiral line 2-4 rotates in the middle shaft sleeve inner spiral line 3-1 and simultaneously realizes axial movement;
a spline is processed on the outer surface of a right-end cylinder of the driven shaft 7 to form a driven shaft spline shaft 7-1;
the driven shaft spline housing 6 comprises a driven shaft spline housing first shaft platform 6-1, a driven shaft spline housing second shaft platform 6-3 and a driven shaft spline housing third shaft platform 6-4; a cylindrical hole is processed in the right end of the spline housing first boss 6-1 of the driven shaft to form a guide post seat 6-2 for inserting the guide post 2-6, and the guide post 2-6 and the guide post seat 6-2 form clearance fit; the driven shaft spline housing first boss 6-1 is inserted into the inner hole at the left end of the middle shaft sleeve 3, and the circumferential outer surface of the driven shaft spline housing first boss 6-1 is matched with the inner hole at the left end of the middle shaft sleeve 3; the driven shaft spline housing second shaft platform 6-3 forms an installation flange of the driven shaft spline housing 6, the driven shaft spline housing second shaft platform 6-3 and the middle shaft sleeve 3 are reliably connected through a screw 5, and a driven shaft spline housing internal spline 6-5 is machined inside the driven shaft spline housing third shaft platform 6-4; the driven shaft spline shaft 7-1 and the driven shaft spline sleeve internal spline 6-5 are in tight and reliable connection;
the steel ball array 4 is arranged in a space between the guide post 2-6 and the middle shaft sleeve 3, the right end of the steel ball array 4 is abutted against the left end of the third shaft platform 2-5 of the middle shaft, and the left end is abutted against the right end of the driven shaft spline sleeve first shaft platform 6-1.
The steel ball array 4 adjusts the elastic coefficient and the mutual friction condition of the steel ball array through the reasonable arrangement of the steel balls, absorbs the impact torque and the impact energy received by the buffer coupling through the elastic deformation of the steel ball array 4, and consumes the impact energy received by the buffer coupling through the mutual friction among the steel balls.
The steel ball array 4 of the invention is precompressed at the original position for balancing the rated moment of the buffer coupling. In the starting process of the driving shaft 1, due to the effect of inertia load of a driven part connected with a driven shaft 7, the driving shaft 1 can form starting torque far larger than the rated torque of a buffer coupling, the driving shaft 1 drives an intermediate shaft to rotate through a driving shaft spline shaft 1-1 and an intermediate shaft inner spline 2-2, screwing transmission is generated between a spiral line 3-1 in an intermediate shaft sleeve and an intermediate shaft spiral line 2-4 to form axial compression force larger than the precompression force of a steel ball array 4, the intermediate shaft 2 further compresses the steel ball array 4 through a left end step of an intermediate shaft third shaft platform 2-5, meanwhile, the intermediate shaft 2 generates axial movement leftwards relative to the driving shaft 1 through sliding fit formed between the intermediate shaft inner spline 2-2 and the driving shaft spline shaft 1-1, and at the moment, the compression force borne by the steel ball array 4 and the starting torque of the driving shaft 1 pass through the spiral line 3 4, axial forces formed by screwing are balanced, in the process, due to screwing transmission generated between the spiral line 3-1 in the middle shaft sleeve and the spiral line 2-4 of the middle shaft, axial displacement is generated, corresponding to circumferential rotation motion, a rotation speed difference is generated between the driven shaft 7 and the driving shaft 1, the transmission time of impact torque is prolonged, the peak value of starting torque is reduced, and the safety of the transmission shaft and each part in a transmission system is effectively protected; when the driven shaft 7 and the driven part connected with the driven shaft are driven by the driving shaft 1, the rotating speed is gradually increased, the inertia moment is gradually reduced, the working moment of the buffer coupling is also gradually reduced, the middle shaft 2 generates relative rotation between the spiral line 3-1 in the middle shaft sleeve and the spiral line 2-4 of the middle shaft under the action of the axial compression force of the steel ball array 4, meanwhile, the intermediate shaft 2 generates rightward axial movement relative to the driving shaft 1 through sliding fit formed between the intermediate shaft internal spline 2-2 and the driving shaft spline shaft 1-1, a right end step of an intermediate shaft third shaft platform 2-5 gradually approaches to the left side of the inner side of the right end of the intermediate shaft 2 sleeve, and at the moment, axial compression force borne by the steel ball array 4 is balanced with axial force formed by screwing between the intermediate shaft sleeve internal spiral line 3-1 and the intermediate shaft spiral line 2-4; when the working torque of the buffer coupling is equal to or less than the rated torque, the right end step of the third intermediate shaft table 2-5 gradually abuts against the left side of the inner side of the right end of the intermediate shaft sleeve 3, and at the moment, the axial compression force applied to the steel ball array 4 is equal to the original pre-compression force; when a driven part connected with a driven shaft 7 is subjected to the action of impact torque and the impact torque is larger than the rated torque of the buffer coupling, the driven shaft 7 and the driven part connected with the driven shaft drive the middle shaft sleeve 3 to reduce the rotating speed through the driven shaft spline shaft 7-1 and the driven shaft spline sleeve 6 inner spline, screwing transmission is generated between the middle shaft sleeve inner spiral line 3-1 and the middle shaft spiral line 2-4 to form axial compression force larger than the precompression force of the steel ball array 4, the middle shaft 2 further compresses the steel ball array 4 through the left end step of the middle shaft third shaft platform 2-5, meanwhile, the middle shaft 2 generates axial movement towards the left relative to the driving shaft 1 through the sliding fit formed between the middle shaft inner spline 2-2 and the driving shaft spline shaft 1-1, at the moment, the compression force applied to the steel ball array 4 and the impact torque applied to the driven shaft 7 are subjected to the inner spiral line 3 4 are balanced, and in the process, because the screwing transmission generated between the spiral line 3-1 in the middle shaft sleeve and the spiral line 2-4 of the middle shaft sleeve generates axial displacement, corresponding to circumferential rotation motion, the rotating speed difference is generated between the driven shaft 7 and the driving shaft 1, the transmission time of the impact torque is prolonged, the peak value of the impact torque is reduced, and the safety of each part in the transmission shaft and the transmission system is effectively protected.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (1)
1. A buffer coupling is characterized by comprising a driving shaft (1), an intermediate shaft (2), an intermediate shaft sleeve (3), a steel ball array (4), a screw (5), a driven shaft spline sleeve (6) and a driven shaft (7);
a spline is processed on the outer surface of a cylinder at the left end of the driving shaft (1) to form a driving shaft spline shaft (1-1); the middle shaft (2) comprises a first middle shaft platform (2-1), a second middle shaft platform (2-3), a third middle shaft platform (2-5) and guide columns (2-6); spline grooves are processed in the first pillow block (2-1) of the intermediate shaft to form an intermediate shaft internal spline (2-2), the driving shaft spline shaft (1-1) is inserted into the intermediate shaft internal spline (2-2) and forms sliding fit, and the intermediate shaft (2) axially moves relative to the driving shaft (1); the right end of the intermediate shaft second shaft platform (2-3) is connected with the intermediate shaft first shaft platform (2-1), the left end of the intermediate shaft second shaft platform is connected with the right end of the intermediate shaft third shaft platform (2-5), and a multi-head spiral line is processed on the circumferential outer surface of the intermediate shaft second shaft platform (2-3) to form an intermediate shaft spiral line (2-4); the left end of the third pillow block (2-5) of the middle shaft is connected with the right end of the guide pillar (2-6);
the inner side of the right side of the middle shaft sleeve (3) is processed with a multi-start helical line to form a helical line (3-1) in the middle shaft sleeve, the helical line (3-1) in the middle shaft sleeve and the helical line (2-4) of the middle shaft sleeve are mutually screwed to form thread transmission, and the helical line (2-4) of the middle shaft realizes axial movement while forming rotation in the helical line (3-1) in the middle shaft sleeve;
a spline is processed on the outer surface of a right-end cylinder of the driven shaft (7) to form a driven shaft spline shaft (7-1);
the driven shaft spline housing (6) comprises a driven shaft spline housing first shaft platform (6-1), a driven shaft spline housing second shaft platform (6-3) and a driven shaft spline housing third shaft platform (6-4); a cylindrical hole is processed in the right end of the driven shaft spline housing first boss (6-1) to form a guide post seat (6-2) for inserting a guide post (2-6), and the guide post (2-6) and the guide post seat (6-2) form clearance fit; the driven shaft spline housing first boss (6-1) is inserted into the inner hole at the left end of the middle shaft sleeve (3), and the circumferential outer surface of the driven shaft spline housing first boss (6-1) is matched with the inner hole at the left end of the middle shaft sleeve (3); the driven shaft spline housing second shaft platform (6-3) forms an installation flange of the driven shaft spline housing (6), the driven shaft spline housing second shaft platform (6-3) and the middle shaft sleeve (3) are reliably connected through a screw (5), and a driven shaft spline housing internal spline (6-5) is machined inside the driven shaft spline housing third shaft platform (6-4); the driven shaft spline shaft (7-1) and the driven shaft spline sleeve internal spline (6-5) are tightly and reliably connected;
the steel ball group row (4) is arranged in a space between the guide pillar (2-6) and the middle shaft sleeve (3), the right end of the steel ball group row (4) is abutted against the left end of the middle shaft third shaft platform (2-5), and the left end of the steel ball group row (4) is abutted against the right end of the driven shaft spline sleeve first shaft platform (6-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911086616.4A CN110873127A (en) | 2019-11-08 | 2019-11-08 | Buffer coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911086616.4A CN110873127A (en) | 2019-11-08 | 2019-11-08 | Buffer coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110873127A true CN110873127A (en) | 2020-03-10 |
Family
ID=69717245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911086616.4A Pending CN110873127A (en) | 2019-11-08 | 2019-11-08 | Buffer coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110873127A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3986370A (en) * | 1975-04-07 | 1976-10-19 | Empire Oil Tool Company | Apparatus for connecting motors in tandem |
| JP2013021922A (en) * | 2011-07-14 | 2013-02-04 | Kaaz Corp | Vibration-absorbing joint and bush cutter equipped with the same |
| CN202914580U (en) * | 2012-11-14 | 2013-05-01 | 罗俊 | One-way transmission device with buffering function |
| CN106763266A (en) * | 2016-12-23 | 2017-05-31 | 浙江众邦机电科技有限公司 | A kind of yielding coupling |
| CN206465032U (en) * | 2016-04-13 | 2017-09-05 | 优钢机械股份有限公司 | rotary fastening device |
| CN107842560A (en) * | 2017-11-27 | 2018-03-27 | 江苏兴云动力科技有限公司 | A kind of torsion damper gear |
-
2019
- 2019-11-08 CN CN201911086616.4A patent/CN110873127A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3986370A (en) * | 1975-04-07 | 1976-10-19 | Empire Oil Tool Company | Apparatus for connecting motors in tandem |
| JP2013021922A (en) * | 2011-07-14 | 2013-02-04 | Kaaz Corp | Vibration-absorbing joint and bush cutter equipped with the same |
| CN202914580U (en) * | 2012-11-14 | 2013-05-01 | 罗俊 | One-way transmission device with buffering function |
| CN206465032U (en) * | 2016-04-13 | 2017-09-05 | 优钢机械股份有限公司 | rotary fastening device |
| CN106763266A (en) * | 2016-12-23 | 2017-05-31 | 浙江众邦机电科技有限公司 | A kind of yielding coupling |
| CN107842560A (en) * | 2017-11-27 | 2018-03-27 | 江苏兴云动力科技有限公司 | A kind of torsion damper gear |
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| PB01 | Publication | ||
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Application publication date: 20200310 |