CN110715035A - Internal support multi-stage electric cylinder - Google Patents
Internal support multi-stage electric cylinder Download PDFInfo
- Publication number
- CN110715035A CN110715035A CN201911039568.3A CN201911039568A CN110715035A CN 110715035 A CN110715035 A CN 110715035A CN 201911039568 A CN201911039568 A CN 201911039568A CN 110715035 A CN110715035 A CN 110715035A
- Authority
- CN
- China
- Prior art keywords
- push rod
- stage
- lead screw
- electric cylinder
- sliding
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
-
- 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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
-
- 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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H2025/2059—Superposing movement by two screws, e.g. with opposite thread direction
-
- 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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H2025/2062—Arrangements for driving the actuator
- F16H2025/2081—Parallel arrangement of drive motor to screw axis
-
- 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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/2056—Telescopic screws with at least three screw members in coaxial arrangement
-
- 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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
-
- 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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2247—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers
- F16H25/2252—Planetary rollers between nut and screw
Abstract
The invention relates to an inner support multistage electric cylinder, and belongs to the technical field of electric cylinder transmission. The invention can directly transmit the thrust to the gear box through the lead screw by utilizing the inner support mode, thereby improving the efficiency of the system and simultaneously improving the power density of the system due to reducing the transmission links of the force. The structure can be changed from a two-stage electric cylinder into a three-stage or multi-stage electric cylinder by increasing the number of the sliding screw rods. The synchronous extension of the first-stage push rod and the second-stage push rod can be realized, and the synchronous extension device is not only suitable for an electric cylinder driven by a planetary roller screw, but also suitable for a multistage electric cylinder driven by a ball screw and a trapezoidal screw.
Description
Technical Field
The invention belongs to the technical field of electric cylinder transmission, and particularly relates to an inner supporting multi-stage electric cylinder.
Background
The multistage electric cylinder is one of the important directions of present electric cylinder research and development, and traditional multistage electric cylinder uses trapezoidal lead screw as the owner, but trapezoidal lead screw has the shortcoming that transmission efficiency is low. Meanwhile, other multi-stage electric cylinders which are published at present generally adopt a stay wire type or a bearing supporting mode, and the modes have the defect of low power density.
Disclosure of Invention
Technical problem to be solved
The technical problem to be solved by the invention is as follows: how to utilize the inner supporting structure to realize the transmission function of the multistage electric cylinder.
(II) technical scheme
In order to solve the technical problem, the invention provides an internal support multi-stage electric cylinder which is characterized in that thrust can be directly transmitted to a gear box through a lead screw by using an internal support mode.
Preferably, the cylinder is an internal support double-stage electric cylinder.
Preferably, the internal support two-stage electric cylinder comprises a power device 1, a gear box 2, a torsion bar 3, a fixed screw rod 4, a sliding screw rod 5, a two-stage push rod 6, a one-stage push rod 7, a cylinder barrel 8 and a push rod head 9;
wherein the power device 1 is connected with the gear box 2; the gear box 2 is internally provided with gear transmission and is used for transmitting the output torque of the power device 1 to the torsion bar 3; the sliding lead screw 5 and the fixed lead screw 4 are in a lead screw nut structure, and the torsion bar 3 is used for transmitting the obtained output torque to the sliding lead screw 5 through a guide key at the end part of the torsion bar, so that the rotating motion of the sliding lead screw 5 on the fixed lead screw 4 is realized; the fixed screw 4 and the cylinder barrel 8 are fixedly connected with the gear box 2 respectively; the first-stage push rod 7 and the cylinder barrel 8 are in nested fit, and a guide key groove is arranged between the first-stage push rod and the cylinder barrel, so that the first-stage push rod and the cylinder barrel can only perform axial relative movement; wherein the sliding screw rod 5 is matched with the secondary push rod 6 by a screw rod nut; the second-stage push rod 6 and the first-stage push rod 7 are also in nested fit, and a guide key groove is arranged between the second-stage push rod and the first-stage push rod, so that the second-stage push rod and the first-stage push rod can only perform axial relative motion; the push rod head 9 is fixedly connected with the second-stage push rod 6.
Preferably, the knuckle bearing on the push rod head 9 and the knuckle bearing on the gear box 2 are an outward output interface.
Preferably, the power unit 1 is connected to a flange of the gear box 2.
Preferably, the gear box 2 is internally provided with parallel gear transmission.
Preferably, the inner support three-stage electric cylinder is provided, wherein the sliding screw rod 5 is provided in plurality.
Preferably, the electric cylinder is an internal support four-stage or more electric cylinder.
The invention also provides a working method of the internal support two-stage electric cylinder, when in a retraction state, a joint bearing at the end of a gear box 2 of the internal support two-stage electric cylinder is in hinged transmission with a joint bearing on a push rod 9 and an external load, a power device 1 outputs torque to the gear box 2 through a transmission shaft, parallel gears in the gear box 2 transmit the output torque to a torsion bar 3, the torsion bar 3 drives a sliding lead screw 5 to rotate on a fixed lead screw 4 through a guide key, the sliding lead screw 5 and the fixed lead screw 4 are in a lead screw nut structure, so that the rotation and linear compound motion of the sliding lead screw 5 is realized, a cylinder 8 and a first-stage push rod 7 are in a nested structure, the rotation motion of the first-stage push rod 7 is limited through the guide key, a second-stage push rod 6 and the sliding lead screw 5 are in a lead screw nut structure, and a guide, therefore, the secondary push rod 6 can only do axial linear motion, the primary push rod 7 and the sliding lead screw 5 are provided with bearings, so that relative rotation motion exists between the primary push rod 7 and the sliding lead screw 5, no relative motion exists in the axial direction, and the primary push rod 7 and the secondary push rod 6 do axial extension motion relative to the cylinder barrel 8 through forward rotation of the power device 1.
The invention further provides a working method of the internal support two-stage electric cylinder as claimed in any one of claims 3 to 6, when in an extending state, the power device 1 rotates reversely to make the first-stage push rod 7 and the second-stage push rod 6 perform axial retraction motion relative to the cylinder barrel 8, the push-pull force borne by the internal support two-stage electric cylinder is transmitted to the second-stage push rod 6 through the push rod head 9, the push-pull force borne by the second-stage push rod 6 is transmitted to the sliding lead screw 5 through the structure of the second-stage push rod and the lead screw nut of the sliding lead screw 5, and the sliding lead screw 5 is transmitted to the fixed lead screw 4 through the structure of the lead screw nut of the fixed.
(III) advantageous effects
The invention can directly transmit the thrust to the gear box through the lead screw by utilizing the inner support mode, thereby improving the efficiency of the system and simultaneously improving the power density of the system due to reducing the transmission links of the force. The structure can be changed from a two-stage electric cylinder into a three-stage or multi-stage electric cylinder by increasing the number of the sliding screw rods. The synchronous extension of the first-stage push rod and the second-stage push rod can be realized, and the synchronous extension device is not only suitable for an electric cylinder driven by a planetary roller screw, but also suitable for a multistage electric cylinder driven by a ball screw and a trapezoidal screw.
Drawings
Fig. 1 is a schematic structural diagram of an internal support double-stage electric cylinder in a retraction state according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an internal support two-stage electric cylinder in an extended state according to an embodiment of the present invention.
Detailed Description
In order to make the objects, contents, and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
As shown in fig. 1 and 2, an internal support two-stage electric cylinder provided by an embodiment of the present invention includes a power device (1), a gear box (2), a torsion bar (3), a fixed lead screw (4), a sliding lead screw (5), a two-stage push rod (6), a one-stage push rod (7), a cylinder (8), and a push rod head (9).
Wherein the power device (1) is connected with a flange of the gear box (2); the gear box (2) is internally provided with parallel gears for transmitting the output torque of the power device (1) to the torsion bar (3); the torsion bar (3) is used for transmitting the obtained output torque to the sliding lead screw (5) through a guide key at the end part of the torsion bar so as to realize the rotary motion of the sliding lead screw (5) on the fixed lead screw (4); the fixed screw rod (4) and the cylinder barrel (8) are fixedly connected with the gear box (2) respectively; the primary push rod (7) and the cylinder barrel (8) are in nested fit, and a guide key groove is arranged between the primary push rod and the cylinder barrel, so that the primary push rod and the cylinder barrel can only perform axial relative movement; wherein the sliding screw rod (5) is matched with the secondary push rod (6) through a screw rod nut; the second-stage push rod (6) and the first-stage push rod (7) are also in nested fit, and a guide key groove is arranged between the second-stage push rod and the first-stage push rod, so that the second-stage push rod and the first-stage push rod can only perform axial relative motion; the push rod head (9) is fixedly connected with the secondary push rod (6); the joint bearing on the push rod head (9) and the joint bearing on the gear box (2) are external output interfaces.
The push-pull force born by the inner support two-stage electric cylinder is transmitted to the second-stage push rod (6) through the push rod head (9), the push-pull force born by the second-stage push rod (6) is transmitted to the sliding lead screw (5) through a lead screw nut structure formed by the second-stage push rod and the sliding lead screw (5), the sliding lead screw (5) and the fixed lead screw (4) are of lead screw nut structures, the sliding lead screw (5) is transmitted to the fixed lead screw (4) through a lead screw nut structure formed by the sliding lead screw (4), and the fixed lead screw (4) is fixedly connected with the gear box (2), so that the push-pull force of the multi-stage electric cylinder is transmitted only on a large structural part.
As shown in fig. 1, for the purpose of providing a schematic diagram of an internal support two-stage electric cylinder in a retraction state, a joint bearing at the end of a gear box (2) of the internal support two-stage electric cylinder and a joint bearing on a push rod (9) are in hinged transmission with an external load, a power device (1) outputs torque to the gear box (2) through a transmission shaft, parallel gears in the gear box (2) transmit the output torque to a torsion bar (3), the torsion bar (3) drives a sliding lead screw (5) to rotate on a fixed lead screw (4) through a guide key, because the sliding lead screw (5) and the fixed lead screw (4) are in a lead screw nut structure, the rotation and linear compound motion of the sliding lead screw (5) is realized, a cylinder barrel (8) and a first-stage push rod (7) are in a nested structure, the rotation motion of the first-stage push rod (7) is limited through the guide key, and a second-stage push rod (6), a guide key is arranged between the secondary push rod (6) and the primary push rod (7), so that the secondary push rod (6) can only do axial linear motion, the primary push rod (7) and the sliding lead screw (5) are provided with bearings, so that the primary push rod (7) and the sliding lead screw (5) do relative rotation motion, but do not do relative axial motion, and the primary push rod (7) and the secondary push rod (6) can do axial extension motion relative to the cylinder barrel (8) through forward rotation of the power device (1).
As shown in fig. 2, the invention provides a schematic diagram of an internal-support two-stage electric cylinder in an extended state, wherein a power device (1) rotates in a reverse direction to enable a first-stage push rod (7) and a second-stage push rod (6) to perform an axial retraction motion relative to a cylinder barrel (8), a push-pull force borne by the internal-support two-stage electric cylinder is transmitted to the second-stage push rod (6) through a push rod head (9), a push-pull force borne by the second-stage push rod (6) is transmitted to a sliding lead screw (5) through a lead screw nut structure of the sliding lead screw (5), the sliding lead screw (5) is transmitted to a fixed lead screw (4) through a lead screw nut structure of the fixed lead screw (4), and the fixed lead screw (4) is fixedly connected with a gear box (2), so that the push-pull force of the multi-stage electric cylinder is transmitted only on a large structural member, thereby improving the.
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 (10)
1. An inner support multistage electric cylinder is characterized in that the structure can directly transmit thrust to a gear box through a lead screw by using an inner support mode.
2. The internal support multi-stage electric cylinder as claimed in claim 1, which is an internal support two-stage electric cylinder.
3. The internal support multistage electric cylinder as claimed in claim 2, characterized in that it comprises a power device (1), a gear box (2), a torsion bar (3), a fixed lead screw (4), a sliding lead screw (5), a secondary push rod (6), a primary push rod (7), a cylinder barrel (8) and a push rod head (9);
wherein the power device (1) is connected with the gear box (2); the gear box (2) is internally in gear transmission and is used for transmitting the output torque of the power device (1) to the torsion bar (3); the sliding lead screw (5) and the fixed lead screw (4) are in a lead screw nut structure, and the torsion bar (3) is used for transmitting the obtained output torque to the sliding lead screw (5) through a guide key at the end part of the torsion bar, so that the rotating motion of the sliding lead screw (5) on the fixed lead screw (4) is realized; the fixed screw rod (4) and the cylinder barrel (8) are fixedly connected with the gear box (2) respectively; the primary push rod (7) and the cylinder barrel (8) are in nested fit, and a guide key groove is arranged between the primary push rod and the cylinder barrel, so that the primary push rod and the cylinder barrel can only perform axial relative movement; wherein the sliding screw rod (5) is matched with the secondary push rod (6) through a screw rod nut; the second-stage push rod (6) and the first-stage push rod (7) are also in nested fit, and a guide key groove is arranged between the second-stage push rod and the first-stage push rod, so that the second-stage push rod and the first-stage push rod can only perform axial relative motion; the push rod head (9) is fixedly connected with the second-stage push rod (6).
4. The internal support multi-stage electric cylinder as claimed in claim 2, wherein the knuckle bearing on the pusher head (9) and the knuckle bearing on the gear box (2) are an outward output interface.
5. The internal support multi-stage electric cylinder as claimed in claim 2, characterized in that the power plant (1) is connected to a flange of the gear box (2).
6. The internal support multi-stage electric cylinder as claimed in claim 2, characterized in that inside the gearbox (2) is a parallel gear transmission.
7. The internal support multi-stage electric cylinder as claimed in claim 1, which is an internal support three-stage electric cylinder, wherein the sliding screw (5) is plural.
8. The internally supported multi-stage electric cylinder as claimed in claim 1, which is an internally supported four-stage or more electric cylinder.
9. An operating method of an internal support two-stage electric cylinder as claimed in any one of claims 3 to 6, characterized in that, in a retraction state, a joint bearing at the end of a gear box (2) of the internal support two-stage electric cylinder and a joint bearing on a push rod (9) are in hinged transmission with an external load, a power device (1) outputs torque to the gear box (2) through a transmission shaft, parallel gears in the gear box (2) transmit the output torque to a torsion bar (3), the torsion bar (3) drives a sliding lead screw (5) to rotate on a fixed lead screw (4) through a guide key, as the sliding lead screw (5) and the fixed lead screw (4) are in a lead screw nut structure, the rotation and linear compound motion of the sliding lead screw (5) are realized, a cylinder barrel (8) and a first-stage push rod (7) are in a nested structure, and the rotation motion of the first-stage push rod (7) is limited through the, the two-stage push rod (6) and the sliding screw rod (5) are of screw nut structures, a guide key is arranged between the two-stage push rod (6) and the one-stage push rod (7), so that the two-stage push rod (6) can only do axial linear motion, the one-stage push rod (7) and the sliding screw rod (5) are provided with bearings, so that the two-stage push rod and the sliding screw rod have relative rotary motion, the axial direction does not have relative motion, and the one-stage push rod (7) and the two-stage push rod (6) do axial extending motion relative to the cylinder barrel (8) through forward rotation of the power device (1).
10. An operation method of an internal support double-stage electric cylinder as claimed in any one of claims 3 to 6, characterized in that, in an extended state, the primary push rod (7) and the secondary push rod (6) perform an axial retraction motion relative to the cylinder barrel (8) through the reverse rotation of the power device (1), the push-pull force borne by the internal support double-stage electric cylinder is transmitted to the secondary push rod (6) through the push rod head (9), the push-pull force borne by the secondary push rod (6) is transmitted to the sliding lead screw (5) through the structure of the push rod head and the lead screw nut of the sliding lead screw (5), and the sliding lead screw (5) is transmitted to the fixed lead screw (4) through the structure of the lead screw nut of the fixed lead screw (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911039568.3A CN110715035B (en) | 2019-10-29 | 2019-10-29 | Internal support multi-stage electric cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911039568.3A CN110715035B (en) | 2019-10-29 | 2019-10-29 | Internal support multi-stage electric cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110715035A true CN110715035A (en) | 2020-01-21 |
| CN110715035B CN110715035B (en) | 2020-12-08 |
Family
ID=69213475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911039568.3A Active CN110715035B (en) | 2019-10-29 | 2019-10-29 | Internal support multi-stage electric cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110715035B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112234753A (en) * | 2020-08-24 | 2021-01-15 | 西安方元明科技股份有限公司 | Vertical electric cylinder for engineering truck |
| CN113561857A (en) * | 2021-08-05 | 2021-10-29 | 诺创汽车科技(上海)有限公司 | Propulsion mechanism and vehicle seat |
| CN113833820A (en) * | 2021-09-17 | 2021-12-24 | 北京科技大学 | Reverse multi-stage heavy-load electric cylinder |
| CN113972784A (en) * | 2021-11-08 | 2022-01-25 | 西安方元明鑫精密机电制造有限公司 | Multistage electric cylinder structure with single lead screw pair driving multiple lead screw nuts |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB779420A (en) * | 1955-03-09 | 1957-07-17 | Bronzavia Sa | Improvements in or relating to screw and nut transmission devices |
| US3200664A (en) * | 1963-10-16 | 1965-08-17 | Electronic Specialty Co | Stop for linear actuators |
| CN107863844A (en) * | 2017-12-25 | 2018-03-30 | 西安方元明科技股份有限公司 | A kind of multi-stage expansion electric cylinder |
| CN109798340A (en) * | 2019-01-29 | 2019-05-24 | 西安微电子技术研究所 | A kind of small size heavy duty multi-stage electric cylinder |
-
2019
- 2019-10-29 CN CN201911039568.3A patent/CN110715035B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB779420A (en) * | 1955-03-09 | 1957-07-17 | Bronzavia Sa | Improvements in or relating to screw and nut transmission devices |
| US3200664A (en) * | 1963-10-16 | 1965-08-17 | Electronic Specialty Co | Stop for linear actuators |
| CN107863844A (en) * | 2017-12-25 | 2018-03-30 | 西安方元明科技股份有限公司 | A kind of multi-stage expansion electric cylinder |
| CN109798340A (en) * | 2019-01-29 | 2019-05-24 | 西安微电子技术研究所 | A kind of small size heavy duty multi-stage electric cylinder |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112234753A (en) * | 2020-08-24 | 2021-01-15 | 西安方元明科技股份有限公司 | Vertical electric cylinder for engineering truck |
| CN113561857A (en) * | 2021-08-05 | 2021-10-29 | 诺创汽车科技(上海)有限公司 | Propulsion mechanism and vehicle seat |
| CN113833820A (en) * | 2021-09-17 | 2021-12-24 | 北京科技大学 | Reverse multi-stage heavy-load electric cylinder |
| CN113833820B (en) * | 2021-09-17 | 2023-01-06 | 北京科技大学 | Reverse multi-stage heavy-load electric cylinder |
| CN113972784A (en) * | 2021-11-08 | 2022-01-25 | 西安方元明鑫精密机电制造有限公司 | Multistage electric cylinder structure with single lead screw pair driving multiple lead screw nuts |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110715035B (en) | 2020-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110715035B (en) | Internal support multi-stage electric cylinder | |
| CN101106297A (en) | Three level electric jar for bearing ball silk bar | |
| CN113972784A (en) | Multistage electric cylinder structure with single lead screw pair driving multiple lead screw nuts | |
| CN103659701A (en) | Electric wrench | |
| CN113098190A (en) | Single-wire rod driven multi-stage lifting electric cylinder and transmission method | |
| CN201041225Y (en) | Hollow lead screw type multi-stage electric cylinder | |
| CN219263112U (en) | Multistage electric cylinder | |
| CN201494619U (en) | Oil cylinder rear-mounted type controllable screw pitch propeller | |
| CN101708503A (en) | Method for designing rotary feed-in mechanism of double-roller cold pilger mill and device thereof | |
| CN114198468A (en) | Free push rod multi-stage electric cylinder and design method | |
| CN219432369U (en) | Multistage electric cylinder of rolling transmission mechanism based on axial and radial limiting | |
| CN102581841A (en) | Double driving mechanical arm | |
| CN213808290U (en) | Multistage actuating cylinder | |
| CN217063489U (en) | Double-end multistage electric cylinder | |
| CN202182161U (en) | Multi-stage push rod | |
| CN202129798U (en) | Two-stage rotary mechanism for small electric manipulator | |
| CN105834921A (en) | Pushed oscillation type direct-driven ultrahigh-pressure fluid power system | |
| CN201144916Y (en) | Hydraulic actuating cylinder for steering outputting angular displacement and torque | |
| CN110657214A (en) | Multistage planet roller screw drive structure | |
| CN201833374U (en) | Novel transmission mechanism for robot | |
| CN220201269U (en) | Heavy-load synchronous multistage guiding electric cylinder | |
| CN219535797U (en) | Same-lifting multi-stage electric cylinder | |
| CN111503233B (en) | Multi-motor synchronous driving high-power four-section telescopic electric cylinder | |
| CN115987011A (en) | Heavy-load integrated three-stage electric cylinder | |
| CN215186261U (en) | Large-stroke electric push rod |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |