CN218733659U - Electrodynamic linear drive with radial compensation - Google Patents
Electrodynamic linear drive with radial compensation Download PDFInfo
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- CN218733659U CN218733659U CN202222053604.5U CN202222053604U CN218733659U CN 218733659 U CN218733659 U CN 218733659U CN 202222053604 U CN202222053604 U CN 202222053604U CN 218733659 U CN218733659 U CN 218733659U
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- radial
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- radial compensation
- electric linear
- linear drive
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The invention provides an electric linear driver with radial compensation, which comprises a driving device; the screw rod is arranged inside the outer pipe; the nut is screwed on the lead screw and rotates when the lead screw rotates; a radial compensation assembly, said nut being formed with a first radial runner, at least a portion of said radial compensation device being formed with a projection, and said projection forming a clearance fit with said first radial runner to allow said nut to float when moving; the telescopic rod is arranged in the outer pipe. At least part of the radial compensation assembly and the nut form clearance fit, so when the nut rotates, the nut is allowed to be in a dynamic state in the radial direction due to the existence of the clearance, namely a floating state, so that the condition that the nut and the lead screw are deformed under stress due to insufficient coaxiality is eliminated, the processing precision of a product is further reduced, and the friction and the abrasion between the nut and the lead screw are reduced.
Description
Technical Field
The invention relates to the technical field of electric linear drivers, in particular to an electric linear driver with radial compensation.
Background
The electric linear driver is widely applied to the field of solar tracking, the transmission principle is that a motor drives a screw rod to rotate, the screw rod drives a screw rod nut to convert rotary motion into linear motion, and a telescopic rod of the electric linear driver makes reciprocating linear motion under the constraint of an outer tube through certain mechanical connection, so that the aim of driving a solar component to be aligned with the sun is fulfilled.
However, when the electric linear actuator is applied to the solar tracking field, the following problems are obviously existed: 1. the requirement on the machining precision is high (particularly the coaxiality), if the coaxiality is not enough, the frictional resistance between the screw rod and the screw rod nut is obviously increased, the abrasion is increased, the driving is difficult, and the like; 2. under the condition of wind load, the push rod is stressed by a larger force and has larger relative deformation, and the form and position tolerance is more inevitable under the condition. The receiving surface of a large-size photovoltaic module is particularly obvious in a large wind load area, and the direct result is that the push rod is difficult to drive, the abrasion is aggravated, and the service life is short.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
To this end, the invention provides an electrodynamic linear drive with radial compensation.
The invention provides an electric linear drive with radial compensation, comprising:
a drive device;
the device comprises an outer tube, a driving device and a control device, wherein a lead screw is arranged in the outer tube, and one end of the lead screw is connected with the driving end of the driving device so as to be driven by the driving device to rotate;
the nut is screwed on the lead screw, and when the lead screw rotates, the nut moves linearly along the length direction of the lead screw;
a radial compensation assembly, said nut being formed with a first radial runner, at least a portion of said radial compensation device being formed with a projection, and said projection forming a clearance fit with said first radial runner to allow said nut to float when moving;
the telescopic rod is arranged in the outer pipe and is connected with one end of the radial compensation component.
The invention provides an electric linear driver with radial compensation, which comprises a driving device, an outer pipe, a nut, a radial compensation device and a telescopic rod. The driving device drives the screw rod to rotate, so that the nut is driven to do linear motion, and on the basis, the radial compensation assembly is additionally arranged in the technical scheme. At least part of the radial compensation assembly and the nut form clearance fit, so when the nut rotates, the nut is allowed to be in a dynamic state in the radial direction due to the existence of the clearance, namely a floating state, the condition that the nut is stressed and deformed due to insufficient coaxiality of the nut and the lead screw is eliminated, the machining precision of a product is further reduced, the friction and abrasion between the nut and the lead screw are reduced, and the radial compensation assembly is suitable for application in the field of solar tracking. When the nut moves linearly, the radial compensation component is driven to move synchronously, and then the telescopic rod is driven to extend or retract. Therefore, after the problems are eliminated, the linear driving process can be still ensured, and the operation reliability is synchronously improved.
The electric linear actuator with radial compensation according to the above technical solution of the present invention may further have the following additional technical features:
in the above technical solution, the radial compensation assembly further includes:
a slip ring, one end face of which is formed with a first protrusion, the first protrusion being in clearance fit with the first radial sliding groove; a second bulge is formed on the other end face of the slip ring, and a connecting line between the first bulges and a connecting line between the second bulges are crossed;
a second radial sliding groove is formed in the mounting sleeve, and the second radial sliding groove is in clearance fit with the second protrusion;
wherein the nut is connected within the mounting sleeve by the slip ring.
In this solution, the radial compensation assembly is further comprised of a slip ring and a mounting sleeve. Wherein, a first protrusion and a second protrusion are formed at two opposite end surfaces of the slip ring. The first protrusion is in clearance fit with the first radial sliding groove of the nut, and the freedom degree of radial movement of the nut is guaranteed. The second bulge is in clearance fit with a second radial sliding groove in the mounting sleeve, and the degree of freedom of radial movement of the sliding ring is guaranteed. The radial compensation of the nut is further completed through the floating action of two different point positions. In addition, the first radial sliding groove and the second radial sliding groove can also be used as oil passages of lubricating grease, and friction between the sliding ring and the nut and friction between the sliding ring and the mounting sleeve are further reduced.
In the above technical scheme, an installation groove is formed on the outer wall surface of the installation sleeve, a sliding ring is arranged in the installation groove in a sliding manner, and the sliding ring is in sliding contact with the inner wall surface of the outer tube.
In this technical scheme, sliding connection has the slip ring in the mounting groove of installation sleeve, and when the nut drove the installation sleeve and be rotatory and linear motion, the slip ring can with the internal face sliding contact of outer tube, and then guarantee the rotation of installation sleeve and reduce the friction between installation sleeve and the outer tube.
In the technical scheme, the end part of the telescopic rod is provided with an external thread, the end part of the mounting sleeve is provided with an internal thread, and the mounting sleeve and the telescopic rod form a threaded connection.
In this technical scheme, it is threaded connection to have injectd telescopic link and installation sleeve to this guarantees both easy-to-detach nature, and then is convenient for both change and maintenance. In addition, the disassembly direction of the installation sleeve and the telescopic rod is opposite to the rotation direction of the installation sleeve, so that the installation sleeve is prevented from falling off in the operation process.
In the technical scheme, a sliding assembly is arranged between the driving end of the driving device and the outer tube so as to ensure the rotation of the driving end.
In this technical scheme, drive arrangement's drive end inlays the dress in sliding assembly to this steady rotation of guaranteeing the drive end.
In the above technical solution, the sliding assembly at least includes a bearing.
In this technical scheme, the sliding component can be the bearing, and drive arrangement inlays the dress in the bearing and is connected with the lead screw.
In the above technical scheme, the outer wall surface of the outer tube is provided with the trunnion.
In this technical scheme, the outer wall surface at the outer tube has set up the trunnion. When the device is applied to the field of solar tracking, the middle section of the device can be connected with a framework of a photovoltaic module through the trunnion so as to ensure the stability of the device.
In the technical scheme, the other end of the telescopic rod is provided with a connecting structure, and the connecting structure is in a swingable form.
In this technical scheme, when this device is used in the solar energy field of tracking, set up connection structure through the tip at the telescopic link to this guarantees to be connected with photovoltaic module. And connection structure is the swing form, for example universal joint or round pin axle isotructure, realizes adjusting photovoltaic module's swing angle through the concertina movement of telescopic link.
In the above technical solution, the driving device is a servo motor.
In the technical scheme, the driving device can be a servo motor, and the driving device drives the screw rod to rotate forwards or backwards in a manner of rotating through the driving end, so that the nut is driven to perform linear motion of returning or advancing.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a front view of an electric linear drive with radial compensation of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
fig. 3 is an exploded view of a radial compensation assembly in the electric linear drive with radial compensation of the present invention.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 3 is:
1. a drive device; 2. an outer tube; 3. a lead screw; 4. a nut; 5. a first radial chute; 6. a telescopic rod; 7. a slip ring; 701. a first protrusion; 702. a second protrusion; 8. installing a sleeve; 9. mounting grooves; 10. a slip ring; 11. a sliding assembly; 12. a trunnion; 13. and (5) a connecting structure.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
An electrodynamic linear drive with radial compensation provided according to some embodiments of the present invention is described below with reference to fig. 1 to 3.
Some embodiments of the present application provide an electric linear drive with radial compensation.
As shown in fig. 1 to 3, a first embodiment of the present invention proposes an electric linear actuator with radial compensation, comprising:
a drive device 1;
the device comprises an outer tube 2, wherein a screw rod 3 is arranged inside the outer tube 2, and one end of the screw rod 3 is coupled with the driving end of the driving device 1 so as to be driven by the driving device 1 to rotate;
the nut 4 is screwed on the lead screw 3, and when the lead screw 3 rotates, the nut 4 linearly moves along the length direction of the lead screw 3;
a radial compensation assembly, said nut 4 being formed with a first radial runner 5, at least part of said radial compensation means being formed with a projection, and said projection forming a clearance fit with said first radial runner 5 to allow said nut 4 to be in a floating condition when in motion;
and the telescopic rod 6 is arranged in the outer pipe 2 and is connected with one end of the radial compensation component.
The invention provides an electric linear driver with radial compensation, which comprises a driving device 1, an outer tube 2, a nut 4, a radial compensation device and a telescopic rod 6. The driving device 1 drives the screw rod 3 to rotate, so that the nut 4 is driven to do linear motion, and on the basis, the radial compensation assembly is additionally arranged in the technical scheme. At least part of the radial compensation assembly and the nut 4 form clearance fit, so when the nut 4 rotates, due to the existence of the clearance, the nut 4 is allowed to be in a dynamic state in the radial direction, namely a floating state, the condition that the nut 4 is stressed and deformed due to insufficient coaxiality of the nut 4 and the lead screw 3 is eliminated, the machining precision of a product is further reduced, the friction and abrasion between the nut 4 and the lead screw 3 are reduced, and the solar tracking device is suitable for application in the field of solar tracking. When the nut 4 moves linearly, the radial compensation component is driven to move synchronously, and then the telescopic rod 6 is driven to extend or retract. Therefore, after the problems are eliminated, the linear driving process can be still ensured, and the operation reliability is synchronously improved.
A second embodiment of the present invention proposes an electric linear drive with radial compensation, and on the basis of the first embodiment, the radial compensation assembly further comprises:
a slip ring 7, wherein a first protrusion 701 is formed on one end surface of the slip ring 7, and the first protrusion 701 is in clearance fit with the first radial sliding groove 5; a second protrusion 702 is formed on the other end surface of the slip ring 7, and a connecting line between the first protrusions 701 and a connecting line between the second protrusions are crossed;
a mounting sleeve 8, wherein a second radial sliding groove is formed inside the mounting sleeve 8, and the second radial sliding groove is in clearance fit with the second protrusion 702;
wherein the nut 4 is connected within the mounting sleeve 8 by means of the slip ring 7.
In this embodiment, the radial compensation assembly is also constituted by a slip ring 7 and a mounting sleeve 8. Wherein a first projection 701 and a second projection 702 are formed at two opposite end surfaces of the slip ring 7. The first protrusion 701 is in clearance fit with the first radial sliding groove 5 of the nut 4, so that the freedom degree of radial movement of the nut 4 is ensured. The second protrusion 702 is in clearance fit with the second radial sliding groove in the mounting sleeve 8, so as to ensure the freedom of radial movement of the slip ring 7. The radial compensation of the nut 4 is further accomplished by the floating action of two different point positions. In addition, the first radial sliding grooves 5 and the second radial sliding grooves can also be used as oil passages of lubricating grease, and friction between the sliding ring 7 and the nut 4 and friction between the sliding ring 7 and the mounting sleeve 8 are further reduced.
In addition to any of the above embodiments, the mounting groove 9 is formed on the outer wall surface of the mounting sleeve 8, the sliding ring 10 is slidably disposed in the mounting groove 9, and the sliding ring 10 is in sliding contact with the inner wall surface of the outer tube 2.
In this embodiment, sliding connection has slip ring 10 in mounting groove 9 of installation sleeve 8, and when nut 4 drove installation sleeve 8 and be rotatory and linear motion, slip ring 10 can with the internal face sliding contact of outer tube 2, and then guarantee the rotation of installation sleeve 8 and reduce the friction between installation sleeve 8 and the outer tube 2.
In a fourth embodiment of the present invention, an electric linear actuator with radial compensation is provided, and in addition to any of the above embodiments, an external thread is formed at an end of the telescopic rod 6, an internal thread is formed at an end of the mounting sleeve 8, and the mounting sleeve 8 and the telescopic rod 6 are in threaded connection.
In this embodiment, the telescopic rod 6 and the mounting sleeve 8 are limited to be in threaded connection, so that the convenience in disassembly of the telescopic rod and the mounting sleeve is ensured, and the replacement and maintenance of the telescopic rod and the mounting sleeve are facilitated. In addition, the disassembly direction of the mounting sleeve 8 and the telescopic rod 6 is opposite to the rotation direction of the mounting sleeve 8, so that the mounting sleeve 8 is prevented from falling off during operation.
A fifth embodiment of the present invention provides an electric linear actuator with radial compensation, and on the basis of any of the above embodiments, a sliding assembly 11 is disposed between the driving end of the driving device 1 and the outer tube 2 to ensure the rotation of the driving end.
In this embodiment, the driving end of the driving device 1 is fitted into the slider assembly 11, thereby ensuring smooth rotation of the driving end.
A sixth embodiment of the invention proposes an electric linear drive with radial compensation and, on the basis of any of the above embodiments, the sliding assembly 11 comprises at least a bearing.
In this embodiment, the sliding member 11 may be a bearing, and the driving device 1 is embedded in the bearing and connected to the screw shaft 3.
A seventh embodiment of the invention proposes an electric linear drive with radial compensation, and on the basis of any of the above embodiments, the outer wall surface of the outer tube 2 is provided with a trunnion 12.
In the present embodiment, the trunnion 12 is provided on the outer wall surface of the outer tube 2. When the device is applied to the field of solar tracking, the middle section of the device can be connected with the framework of a photovoltaic module through the trunnion 12 so as to ensure the stability of the device.
An eighth embodiment of the invention provides an electric linear drive with radial compensation, and on the basis of any one of the above embodiments, the other end of the telescopic rod 6 is provided with a connecting structure 13, and the connecting structure 13 is in a swinging mode.
In this embodiment, when the device is applied to the field of solar tracking, the connection structure 13 is arranged at the end of the telescopic rod 6, so as to ensure the connection with the photovoltaic module. And the connecting structure 13 is in a swinging form, such as a universal joint or a pin shaft, and the swinging angle of the photovoltaic module can be adjusted through the telescopic motion of the telescopic rod 6.
A ninth embodiment of the present invention provides an electric linear actuator with radial compensation, and in addition to any of the above embodiments, the driving device 1 is a servo motor.
In this embodiment, the driving device 1 may be a servo motor, which drives the screw rod 3 to rotate forward or backward by means of rotation of the driving end, so as to drive the nut 4 to perform linear movement of backward or forward.
In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An electric linear drive with radial compensation, comprising:
a drive device (1);
the screw rod (3) is arranged in the outer tube (2), wherein one end of the screw rod (3) is connected with the driving end of the driving device (1) so as to be driven by the driving device (1) to rotate;
the nut (4) is screwed on the lead screw (3), and when the lead screw (3) rotates, the nut (4) makes linear motion along the length direction of the lead screw (3);
a radial compensation assembly, at least a portion of which is formed with a projection, and which forms a clearance fit with the first radial runner (5) to allow the nut (4) to be in a floating condition when in motion, the nut (4) being formed with a first radial runner (5);
the telescopic rod (6) is arranged in the outer pipe (2) and is connected with one end of the radial compensation component.
2. The electric linear drive with radial compensation of claim 1, wherein the radial compensation assembly further comprises:
a sliding ring (7), wherein one end face of the sliding ring (7) is provided with a first protrusion (701), and the first protrusion (701) is in clearance fit with the first radial sliding groove (5); a second protrusion (702) is formed on the other end face of the slip ring (7), and a connecting line between the first protrusions (701) and a connecting line between the second protrusions are crossed;
a mounting sleeve (8), wherein a second radial sliding groove is formed inside the mounting sleeve (8), and the second radial sliding groove is in clearance fit with the second protrusion (702);
wherein the nut (4) is connected in the mounting sleeve (8) by means of the slip ring (7).
3. Electric linear drive with radial compensation according to claim 2, characterized in that the outer wall surface of the mounting sleeve (8) is formed with a mounting groove (9), a sliding ring (10) is slidably arranged in the mounting groove (9), and the sliding ring (10) is in sliding contact with the inner wall surface of the outer tube (2).
4. Electric linear drive with radial compensation according to claim 3, characterized in that the end of the telescopic rod (6) is formed with an external thread, the end of the mounting sleeve (8) is formed with an internal thread, the mounting sleeve (8) and the telescopic rod (6) forming a threaded connection.
5. Electric linear drive with radial compensation according to one of claims 1 to 4, characterized in that a sliding assembly (11) is provided between the drive end of the drive device (1) and the outer tube (2) to ensure a rotation of the drive end.
6. Electric linear drive with radial compensation according to claim 5, characterized in that the sliding assembly (11) comprises at least a bearing.
7. Electric linear drive with radial compensation according to one of claims 1 to 4, characterized in that the outer wall surface of the outer tube (2) is provided with trunnions (12).
8. Electric linear drive with radial compensation according to one of claims 1 to 4, characterized in that the other end of the telescopic rod (6) is provided with a connection (13), which connection (13) is in a swingable form.
9. Electric linear drive with radial compensation according to one of claims 1 to 4, characterized in that the drive (1) is a servomotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222053604.5U CN218733659U (en) | 2022-08-05 | 2022-08-05 | Electrodynamic linear drive with radial compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222053604.5U CN218733659U (en) | 2022-08-05 | 2022-08-05 | Electrodynamic linear drive with radial compensation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218733659U true CN218733659U (en) | 2023-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222053604.5U Active CN218733659U (en) | 2022-08-05 | 2022-08-05 | Electrodynamic linear drive with radial compensation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218733659U (en) |
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2022
- 2022-08-05 CN CN202222053604.5U patent/CN218733659U/en active Active
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Effective date of registration: 20230614 Address after: No. 1913, 19th Floor, Unit 1, Building 9, No. 1700, North Section of Tianfu Avenue, High tech Zone, Chengdu, Sichuan, 610000 Patentee after: CHENG DU ZHONG SHUN SCIENCE AND TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 610000 within phase III of industrial centralized development zone, Southwest Airport Economic Development Zone, Shuangliu District, Chengdu, Sichuan Province Patentee before: SI CHUAN ZHONG SHUN SOLAR ENERGY DEVELOPMENT Co.,Ltd. |