CN114321307A - Novel spiral transmission structure - Google Patents
Novel spiral transmission structure Download PDFInfo
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- CN114321307A CN114321307A CN202210047135.8A CN202210047135A CN114321307A CN 114321307 A CN114321307 A CN 114321307A CN 202210047135 A CN202210047135 A CN 202210047135A CN 114321307 A CN114321307 A CN 114321307A
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- locking device
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- 230000033001 locomotion Effects 0.000 claims abstract description 9
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The invention relates to a novel spiral transmission structure which comprises a first nut 1, a self-locking device 2, a connecting rod 3, a pressing table 4, a groove 5, a second nut 6 and an internal thread 7. The side surface of the first nut 1 is provided with a groove 5, and a self-locking device 2, a connecting rod 3 and a pressing platform 4 are arranged in the groove 5. The self-locking means 2 is movable in the radial direction of said first nut 1. The connecting rod 3 can move along the axial direction and the circumferential direction of the first nut 1 in the groove 5, the other end of the connecting rod 3 is fixedly connected with the second nut 6, and the connecting rod 3 and the second nut rotate or move together. The pressing table 4 is fixedly connected with the first nut 1, and the pressing table and the first nut rotate or move together. The first nut 1 is coaxial with the second nut 6. The top surface of the pressing table 4 is slightly higher than the bottom surface of the connecting rod 3. The invention realizes that the spiral transmission can have different equivalent friction angles in different motion directions, and the automatic switching is realized during the input reversing without any additional energy except for the self-locking device.
Description
Technical Field
The invention relates to the technical field of spiral transmission, in particular to a novel spiral transmission structure.
Background
A screw drive is a common drive mechanism used in mechanical equipment, and the movement is generally a relative rotation of a screw and a nut in the circumferential direction and a relative movement in the axial direction. In general, after the nut and screw are determined, the equivalent friction angle is also determined, and is not changed regardless of the moving direction. However, in some cases it is desirable to have different equivalent friction angles between the nut and the screw in different directions of movement to achieve different movements of the follower.
Disclosure of Invention
The invention solves the problems that: the screw drive is realized by using a mechanical structure, the nut is used as a driving part, and when the moving direction is changed, the equivalent friction angle is changed along with the change.
In order to achieve the purpose, the invention adopts the scheme that: the utility model provides a novel helical drive structure, includes first nut, self-lock device, the connecting rod, presses the platform, the groove, the second nut, the internal thread. The side surface of the first nut is provided with a groove, and a self-locking device, a connecting rod and a pressing platform are arranged in the groove. The self-locking device can move along the radial direction of the first nut. The connecting rod can move in the groove along the axial direction and the circumferential direction of the first nut, the other end of the connecting rod is fixedly connected with the second nut, and the connecting rod and the second nut rotate or move together. The pressing table is fixedly connected with the first nut, and the pressing table and the first nut move or rotate together. The first nut is coaxial with the second nut. The top surface of the pressing platform is slightly higher than the bottom surface of the connecting rod.
And the second nut is used as a driving part and bears load. When the second nut rotates to one side, the connecting rod is driven to rotate along the groove, and when the connecting rod abuts against one side wall of the groove, the first nut also rotates along with the second nut under the driving of the connecting rod, and simultaneously moves along the axial direction of the screw rod together.
When the second nut rotates towards the other side, the connecting rod is driven to rotate towards the other side along the groove, the connecting rod goes up to the pressing platform, and the self-locking device is pressed back.
When the connecting rod withstands the other side wall of the groove, the connecting rod passes through the self-locking device, the self-locking device extends out to lock the connecting rod, and the connecting rod is prevented from sliding out. Because the top surface of the pressure platform is higher than the bottom surface of the connecting rod, the connecting rod rises for a certain distance after driving on the pressure platform, the second nut also rises together and is separated from being in contact with the screw rod, and the first nut is in contact with the screw rod at the moment. The connecting rod continues to rotate under the drive of the second nut, drives the first nut to rotate, and simultaneously moves along the axial direction of the screw rod. When the second nut needs to be rotated reversely, the self-locking device is unlocked, and the connecting rod can drive down the pressing platform towards the other direction.
When the second nut rotates to one side, the first nut and the second nut are simultaneously contacted with the screw, but only the second nut bears the weight, and the equivalent friction angle between the device and the screw is the equivalent friction angle between the second nut and the screw. When the second nut rotates towards the other side, only the first nut is in contact with the screw rod and bears load, and the equivalent friction angle between the device and the screw rod is the equivalent friction angle between the first nut and the screw rod.
The first nut is used as a driving part, and the second nut bears load. When the first nut rotates to one side and one side wall of the groove props against the connecting rod, the connecting rod is driven to rotate together, and then the second nut is driven to rotate together and simultaneously moves along the axial direction of the screw rod together.
When the first nut rotates towards the other side, the pressing table is driven to rotate together, and meanwhile the connecting rod drives to the pressing table and presses the self-locking device back.
When the other side wall of the groove props against the connecting rod, the self-locking device moves over the connecting rod, the self-locking device extends out to lock the connecting rod, and the connecting rod is prevented from sliding out. Because the top surface of the pressure platform is higher than the bottom surface of the connecting rod, the connecting rod rises for a certain distance after driving on the pressure platform, and the second nut also rises together and is separated from being in contact with the screw rod, and at the moment, the second nut is in contact with the first nut. The connecting rod continues to rotate under the drive of the first nut, drives the second nut to rotate, and simultaneously moves along the axial direction of the screw rod. When the first nut needs to be rotated reversely, the self-locking device is unlocked, and the pressing platform can be pulled out of the connecting rod towards the other direction.
When the first nut moves to one side, the first nut and the second nut are simultaneously contacted with the screw, but only the second nut bears the weight, and the equivalent friction angle between the device and the screw is the equivalent friction angle between the second nut and the screw. When the first nut rotates towards the other side, only the first nut is in contact with the screw rod and bears load, and the equivalent friction angle between the device and the screw rod is the equivalent friction angle between the first nut and the screw rod.
The invention has the beneficial effects that: the invention realizes that the screw drive can have different equivalent friction angles in different motion directions.
The invention can automatically switch the input direction without any extra energy except the self-locking device.
The invention is suitable for screw drive of various sizes and has wide application range.
Drawings
FIG. 1 is a three-dimensional view of the structure of the present invention.
Fig. 2 is a structural front view a of the present invention.
Fig. 3 is a top view of the structure of the present invention.
Fig. 4 is a structural front view b of the present invention.
Fig. 5 is a top view b of the structure of the present invention.
Fig. 6 is a structural front view c of the present invention.
Fig. 7 is a top view c of the structure of the present invention.
Fig. 8 is a symmetrical structural view of the present invention.
Fig. 9 is a plan view showing the number of arrangements of the present invention.
In the figure, 1-a first nut, 2-a self-locking device, 3-a connecting rod, 4-a pressing table, 5-a groove, 6-a second nut and 7-an internal thread.
Detailed Description
As shown in fig. 1 and 2, a novel screw transmission structure includes a first nut 1, a self-locking device 2, a connecting rod 3, a pressing table 4, a groove 5, a second nut 6, and an internal thread 7. The side surface of the first nut 1 is provided with a groove 5, and a self-locking device 2, a connecting rod 3 and a pressing table 4 are arranged in the groove 5. The self-locking device 2 can move along the radial direction of the first nut 1. The connecting rod 3 can move in the groove 5 along the axial direction and the circumferential direction of the first nut 1, the other end of the connecting rod 3 is fixedly connected with the second nut 6, and the two rotate or move together. The pressing table 4 is fixedly connected with the first nut 1, and the pressing table and the first nut move or rotate together. The first nut 1 is coaxial with the second nut 6. The top surface of the pressing table 4 is slightly higher than the bottom surface of the connecting rod 3.
The first embodiment is as follows: the second nut 6 is used as a driving part and bears load, and as shown in fig. 1, 2 and 3, the pressing table 4 and the self-locking device 2 are arranged on the left side of the groove 5. When second nut 6 turned right, it rotated connecting rod 3 along groove 5 together, when connecting rod 3 withstood 5 right side walls of groove, first nut 1 also rotated along second nut 6 under the drive of connecting rod 3, simultaneously along screw axial displacement together.
As shown in fig. 4 and 5, when the second nut 6 rotates leftward, the connecting rod 3 is driven to rotate leftward along the slot 5, and the connecting rod 3 moves up the pressing platform 4 and presses the self-locking device 2 back.
As shown in fig. 6 and 7, when the connecting rod 3 abuts against the left side wall of the slot 5, the connecting rod 3 moves over the self-locking device 2, and the self-locking device 2 extends out to lock the connecting rod 3 and prevent the connecting rod 3 from sliding out. Since the top surface of the pressing table 4 is higher than the bottom surface of the connecting rod 3, the connecting rod 3 will rise a distance after driving on the pressing table 4, and the second nut 6 will also rise together and be out of contact with the screw, now contacted by the first nut 1. The connecting rod 3 continues to rotate to the left under the driving of the second nut 6, drives the first nut 1 to rotate to the left, and simultaneously moves along the axial direction of the screw rod. When the second nut 6 needs to rotate rightwards, the self-locking device 2 is unlocked, and the connecting rod 3 can move rightwards to lower the pressing platform 4.
When the second nut 6 is turned to the right, the first nut 1 and the second nut 6 are simultaneously contacted with the screw, but only the second nut 6 bears the weight, and the equivalent friction angle between the device and the screw is the equivalent friction angle between the second nut 6 and the screw. When the second nut 6 is turned to the left, only the first nut 1 contacts the screw and bears the load, and the equivalent friction angle between the device and the screw is the equivalent friction angle between the first nut 1 and the screw.
Example two: with the first nut 1 as the driving part and the second nut 6 bearing the load, as shown in fig. 1, 2 and 3, the pressing table 4 and the self-locking device 2 are arranged on the left side of the groove 5. When the first nut 1 rotates leftwards and the right side wall of the groove 5 props against the connecting rod 3, the connecting rod 3 is driven to rotate together, and then the second nut 6 is driven to rotate together and simultaneously moves along the axial direction of the screw rod together.
As shown in fig. 4 and 5, when the first nut 1 rotates to the right, the pressing platform 4 is driven to rotate to the right, and the connecting rod 3 moves up to the pressing platform 4 and presses the self-locking device 2 back.
As shown in fig. 6 and 7, when the left side wall of the slot 5 abuts against the connecting rod 3, the self-locking device 2 moves over the connecting rod 3, and the self-locking device 2 extends out to lock the connecting rod 3 and prevent the connecting rod 3 from sliding out. Since the top surface of the pressing table 4 is higher than the bottom surface of the connecting rod 3, the connecting rod 3 will rise a distance after driving on the pressing table 4, and the second nut 6 will also rise together and be out of contact with the screw, now contacted by the first nut 1. The connecting rod 3 continues to rotate rightwards under the driving of the first nut 1, drives the second nut 6 to rotate rightwards, and simultaneously moves along the axial direction of the screw rod. When the first nut 1 needs to rotate to the left, the self-locking device 2 is unlocked, and the pressing platform 4 can move out of the connecting rod 3 to the left.
When the first nut 1 rotates to the left, the first nut 1 and the second nut 6 are simultaneously contacted with the screw, but only the second nut 6 bears the weight, and the equivalent friction angle between the device and the screw is the equivalent friction angle between the second nut 6 and the screw. When the first nut 1 rotates rightwards, only the first nut 1 contacts with the screw and bears load, and the equivalent friction angle between the device and the screw is the equivalent friction angle between the first nut 1 and the screw.
Example three: as shown in fig. 8, the pressing platform 4 and the self-locking device 2 are arranged at the right side of the groove 5, and the movement modes of the parts are the same as those of the previous embodiment except that the directions are opposite to each other for achieving the same effect.
Example four: any number of structures may be circumferentially arranged on the nut, two of which are shown in fig. 9 as a top view, with the remaining number being contingent on the specific situation.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (2)
1. The utility model provides a novel helical drive structure which characterized in that: the self-locking nut comprises a first nut (1), a self-locking device (2), a connecting rod (3), a pressing table (4), a groove (5), a second nut (6) and an internal thread (7); first nut (1) side is opened slottedly (5), be equipped with self-lock device (2), connecting rod (3) and pressure platform (4) in groove (5), self-lock device (2) can be followed the radial movement of first nut (1), connecting rod (3) with the axial and circumferential motion of first nut (1), connecting rod (3) other end with second nut (6) link firmly, and the two rotates or removes together, press platform (4) with first nut (1) links firmly, and the two rotates or removes together, first nut (1) with second nut (6) are coaxial, press platform (4) top surface than connecting rod (3) bottom surface is higher slightly.
2. The utility model provides a novel helical drive structure which characterized in that: the structures may be arranged in any number along the circumference of the nut as the case may be.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210047135.8A CN114321307B (en) | 2022-01-17 | 2022-01-17 | Screw transmission structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210047135.8A CN114321307B (en) | 2022-01-17 | 2022-01-17 | Screw transmission structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114321307A true CN114321307A (en) | 2022-04-12 |
| CN114321307B CN114321307B (en) | 2024-04-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210047135.8A Active CN114321307B (en) | 2022-01-17 | 2022-01-17 | Screw transmission structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114321307B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4149430A (en) * | 1977-09-26 | 1979-04-17 | The United States Of America As Represented By The Secretary Of The Army | Brake for ball screw |
| WO1987001422A1 (en) * | 1985-09-04 | 1987-03-12 | Fimek Aktiebolag | Screw and nut transmission |
| US5036720A (en) * | 1988-09-22 | 1991-08-06 | Toyota Jidosha Kabushiki Kaisha | Screw-nut feed mechanism |
| WO2006136834A1 (en) * | 2005-06-23 | 2006-12-28 | Stage Technologies Ltd | Drive mechanism |
| CN1948686A (en) * | 2006-10-18 | 2007-04-18 | 南京康尼机电新技术有限公司 | Locking mechanism of passive spiral door machine |
| US20090301246A1 (en) * | 2005-06-17 | 2009-12-10 | Thk Co., Ltd. | Screw device and method of manufacturing the same |
| CN206092849U (en) * | 2016-09-30 | 2017-04-12 | 昆山奥迪尔智能科技有限公司 | Transmission structure |
| CN110195771A (en) * | 2018-11-15 | 2019-09-03 | 段沧桑 | One kind realizes the mechanical mechanism of lifting rotation movement and its synthesis self-locking device of composition |
| CN212657113U (en) * | 2020-06-27 | 2021-03-05 | 罗章平 | Self-locking nut assembly |
| CN215487491U (en) * | 2021-06-03 | 2022-01-11 | 四川大学 | Double-nut spiral transmission device capable of realizing uniform load |
-
2022
- 2022-01-17 CN CN202210047135.8A patent/CN114321307B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4149430A (en) * | 1977-09-26 | 1979-04-17 | The United States Of America As Represented By The Secretary Of The Army | Brake for ball screw |
| WO1987001422A1 (en) * | 1985-09-04 | 1987-03-12 | Fimek Aktiebolag | Screw and nut transmission |
| US5036720A (en) * | 1988-09-22 | 1991-08-06 | Toyota Jidosha Kabushiki Kaisha | Screw-nut feed mechanism |
| US20090301246A1 (en) * | 2005-06-17 | 2009-12-10 | Thk Co., Ltd. | Screw device and method of manufacturing the same |
| WO2006136834A1 (en) * | 2005-06-23 | 2006-12-28 | Stage Technologies Ltd | Drive mechanism |
| CN1948686A (en) * | 2006-10-18 | 2007-04-18 | 南京康尼机电新技术有限公司 | Locking mechanism of passive spiral door machine |
| CN206092849U (en) * | 2016-09-30 | 2017-04-12 | 昆山奥迪尔智能科技有限公司 | Transmission structure |
| CN110195771A (en) * | 2018-11-15 | 2019-09-03 | 段沧桑 | One kind realizes the mechanical mechanism of lifting rotation movement and its synthesis self-locking device of composition |
| CN212657113U (en) * | 2020-06-27 | 2021-03-05 | 罗章平 | Self-locking nut assembly |
| CN215487491U (en) * | 2021-06-03 | 2022-01-11 | 四川大学 | Double-nut spiral transmission device capable of realizing uniform load |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114321307B (en) | 2024-04-26 |
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