CN115051507A - Electro-hydraulic servo lifting cylinder - Google Patents
Electro-hydraulic servo lifting cylinder Download PDFInfo
- Publication number
- CN115051507A CN115051507A CN202210585914.3A CN202210585914A CN115051507A CN 115051507 A CN115051507 A CN 115051507A CN 202210585914 A CN202210585914 A CN 202210585914A CN 115051507 A CN115051507 A CN 115051507A
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- China
- Prior art keywords
- cylinder barrel
- cylinder
- ball screw
- electro
- piston
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- 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
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
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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
- 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
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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
- 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
- F16H25/2418—Screw seals, wipers, scrapers or the like
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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
- 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
- F16H2025/2075—Coaxial drive motors
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Actuator (AREA)
Abstract
The invention relates to the field of machinery, in particular to an electro-hydraulic servo lifting cylinder, which comprises a servo motor, a cylinder barrel, a piston pipe and a ball screw, wherein a servo motor body is fixedly connected with a screw rod supporting flange arranged at the bottom of the cylinder barrel through a mounting bracket, a guide sealing ring is fixedly arranged on the inner wall of a port of the cylinder barrel, a driving shaft of the servo motor is connected with one end shaft of the ball screw arranged in the cylinder barrel through a coupling, the piston pipe capable of reciprocating along the axial direction of the cylinder barrel is arranged between the outer peripheral surface of the ball screw and the inner wall of the cylinder barrel, one end of the piston pipe close to the coupling is fixedly connected with a piston ring, compared with the traditional jacking and contracting device, a hydraulic system or a pneumatic system is not needed, the electro-hydraulic servo lifting cylinder is simple in structure, convenient to use and install, simple in later maintenance, the expansion amount is controlled through the servo motor, the stroke control is accurate, and under the condition that the servo motor is suddenly de-electrified, the telescopic rod device can not automatically contract.
Description
Technical Field
The invention relates to the field of machinery, in particular to an electro-hydraulic servo lifting cylinder.
Background
In modern automation production assembly line, when the work piece was carried the operation station by the transfer chain, the work piece generally need be by the jacking to in order to accomplish required operation, at this moment just need use jacking device, under the normal conditions, jacking device adopts the cylinder drive to realize sharp jacking motion more, and the top of cylinder piston rod often in the vertical direction with location platform or jacking pole fixed connection. When jacking device installation accuracy is not high, rigid connection can make the cylinder atress unreasonable, causes the harm to the cylinder, leads to its action stationarity poor, the reliability not high, and the lift process produces and sways, leads to cylinder piston rod to warp, causes the jacking device card to die, influences production.
Disclosure of Invention
The invention aims to overcome the technical defects and provide an electro-hydraulic servo lifting cylinder.
In order to solve the technical problems, the technical scheme provided by the invention is that the electrohydraulic servo lifting cylinder comprises a servo motor, a cylinder barrel, a piston tube and a ball screw, wherein a servo motor body is fixedly connected with a screw support flange arranged at the bottom of the cylinder barrel through an installation support, a guide sealing ring is fixedly arranged on the inner wall of a port of the cylinder barrel, a servo motor driving shaft is connected with one end shaft of the ball screw arranged in the cylinder barrel through a coupler, the piston tube capable of reciprocating along the axial direction of the cylinder barrel is arranged between the outer peripheral surface of the ball screw and the inner wall of the cylinder barrel, one end of the piston tube close to the coupler is fixedly connected with the piston ring, the other end of the piston tube extends out of a central hole of the guide sealing ring to the outside of the cylinder barrel, the outer peripheral surface of the piston ring is slidably connected with the inner side wall of the cylinder barrel, the inner side wall of the piston ring is in threaded connection with the outer peripheral surface of the ball screw, one end of the ball screw close to the guide sealing ring is provided with a screw fixing ring which is slidably connected with the inner side wall of the piston tube And (4) a ring.
As an improvement, one end of the piston pipe, which is positioned outside the cylinder barrel, is fixedly provided with a connecting flange, and the surface of the connecting flange is provided with an oil drainage plug screw
As an improvement, a bearing is arranged between the inner wall of the screw rod fixing ring and the end part of the ball screw rod.
As an improvement, the end part of the ball screw is provided with a locking and retaining pad for preventing the screw fixing sliding ring from falling off.
As an improvement, a bearing seat is arranged at the joint of the ball screw and the screw support flange, and a thrust bearing and a conical needle roller bearing for limiting the ball screw to move along the axial direction are arranged in the bearing seat
As an improvement, one end of the bearing seat, which is close to the coupler, is provided with a pressing end cover.
As an improvement, a cylinder fixing flange is fixedly arranged outside the cylinder.
As an improvement, the side wall of the mounting bracket is provided with an oil injection screw plug.
Compared with the prior art, the invention has the advantages that:
compare with traditional jacking, constriction device, need not hydraulic system or pneumatic system, simple structure uses simple to operate, and later maintenance work is simple, through the flexible volume of servo motor control, and stroke control is accurate, under the condition of servo motor sudden loss of power, the telescopic link device can not automatic shrink.
Drawings
FIG. 1 is a schematic diagram of an electro-hydraulic servo lift cylinder;
FIG. 2 is a partially enlarged view of the bottom structure of the cylinder;
fig. 3 is a partially enlarged schematic view of the structure of the end position of the ball screw.
FIGS. 1-3 show: 1. servo motor, 2, installing support, 3, shaft coupling, 4, cylinder, 5, ball screw, 6, piston tube, 7, piston ring, 8, lead screw supporting flange, 9, thrust bearing, 10, fixed sliding ring, 11, flange, 12, bearing frame, 13, compress tightly end cover, 14, circular cone bearing, 15, oiling plug screw, 16, bearing, 17, locking stopping pad, 18, oil drain plug screw, 19, cylinder mounting flange, 20, direction sealing ring.
Detailed Description
The electro-hydraulic servo lifting cylinder of the present invention will be further described in detail with reference to the accompanying drawings.
With reference to the attached drawings 1-3, an electro-hydraulic servo lifting cylinder comprises a servo motor 1, a cylinder barrel 4, a piston pipe 6 and a ball screw 5, wherein a body of the servo motor 1 is fixedly connected with a screw support flange 8 arranged at the bottom of the cylinder barrel 4 through a mounting bracket 2, a guide sealing ring 20 is fixedly arranged on the inner wall of a port of the cylinder barrel 4, a driving shaft of the servo motor 1 is connected with one end shaft of the ball screw 5 arranged inside the cylinder barrel 4 through a coupling 3, the piston pipe 6 capable of reciprocating along the axial direction of the cylinder barrel 4 is arranged between the outer circumferential surface of the ball screw 5 and the inner wall of the cylinder barrel 4, one end of the piston pipe 6 close to the coupling 3 is fixedly connected with a piston ring 7, the other end of the piston pipe 6 extends out of the cylinder barrel 4 from a center hole of the guide sealing ring 20, the outer circumferential surface of the piston ring 7 is connected with the inner side wall of the cylinder barrel 4 in a sliding manner, and the inner side wall of the piston ring 7 is in threaded connection with the outer circumferential surface of the ball screw 5, and one end of the ball screw 5, which is close to the guide sealing ring 20, is provided with a screw fixing ring 10 which is in sliding connection with the inner side wall of the piston tube 6.
As a preferred embodiment of the embodiment, one end of the piston pipe 6, which is positioned outside the cylinder 4, is fixedly provided with a connecting flange 11, and the surface of the connecting flange 11 is provided with an oil drain plug 18
As a preferred embodiment of the present embodiment, a bearing 16 is disposed between the inner wall of the screw fixing ring 10 and the end of the ball screw 5.
As the preferred embodiment of the embodiment, the end part of the ball screw 5 is provided with a locking and retaining pad 17 for preventing the screw fixing slip ring 10 from falling off.
As a preferred embodiment of the present embodiment, a bearing seat 12 is provided at the joint of the ball screw 5 and the screw support flange 8, and a thrust bearing 9 and a needle roller cone bearing 14 for limiting the axial movement of the ball screw 5 are provided inside the bearing seat 12
As a preferred embodiment of the present embodiment, the bearing seat 12 is provided with a pressing end cover 13 near one end of the coupler 3.
As a preferred embodiment of the present embodiment, a cylinder fixing flange 19 is fixedly arranged outside the cylinder 4.
As the preferred embodiment of the embodiment, the side wall of the mounting bracket 2 is provided with an oil filling screw plug 15.
When the invention is implemented specifically, a guide sealing ring 20 is fixedly arranged on the inner wall of a port of a cylinder barrel 4, a driving shaft of a servo motor 1 is connected with one end of a ball screw 5 arranged in the cylinder barrel 4 through a shaft coupling 3, a piston pipe 6 capable of reciprocating along the axial direction of the cylinder barrel 4 is arranged between the outer circumferential surface of the ball screw 5 and the inner wall of the cylinder barrel 4, one end of the piston pipe 6 close to the shaft coupling 3 is fixedly connected with a piston ring 7, the other end of the piston pipe 6 extends out of the cylinder barrel 4 from a center hole of the guide sealing ring 20, the outer circumferential surface of the piston ring 7 is connected with the inner side wall of the cylinder barrel 4 in a sliding manner, the inner side wall of the piston ring 7 is connected with the outer circumferential surface of the ball screw 5 in a threaded manner, one end of the ball screw 5 close to the guide sealing ring 20 is provided with a screw fixing ring 10 connected with the inner side wall of the piston pipe 6 in a sliding manner, and the installation and use are as follows: piston pipe 6 passes through flange 11 and treats that the propelling movement article is connected, and servo motor 1 circular telegram operation, 1 central pivot of servo motor pass through shaft coupling 3 drive ball screw 5 and rotate, through threaded connection between 5 outer peripheral faces of ball screw and the 7 ring internal walls of piston ring, piston ring 7 moves along 4 inner wall axis directions of cylinder under 5 drive action of ball screw, promotes piston pipe 6 then and removes along cylinder axis direction, and servo motor 1 center pin is just, the reverse rotation carries out according to the difference of input current direction to drive piston ring 7 and be reciprocating motion along 4 inner wall axial of cylinder, finally reach the purpose of jacking article.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The utility model provides an electricity liquid servo lift cylinder which characterized in that: the servo motor type hydraulic cylinder comprises a servo motor (1), a cylinder barrel (4), a piston pipe (6) and a ball screw (5), wherein a machine body of the servo motor (1) is fixedly connected with a screw rod supporting flange (8) arranged at the bottom of the cylinder barrel (4) through a mounting bracket (2), a guide sealing ring (20) is fixedly arranged on the inner wall of a port of the cylinder barrel (4), a driving shaft of the servo motor (1) is connected with one end of the ball screw (5) arranged inside the cylinder barrel (4) through a shaft coupling (3), the piston pipe (6) capable of reciprocating along the axial direction of the cylinder barrel (4) is arranged between the outer circumferential surface of the ball screw (5) and the inner wall of the cylinder barrel (4), one end of the piston pipe (6) close to the shaft coupling (3) is fixedly connected with a piston ring (7), and the other end of the piston pipe (6) extends out of the cylinder barrel (4) from a center hole of the guide sealing ring (20), piston ring (7) outer peripheral face and cylinder (4) inside wall sliding connection, piston ring (7) inside wall and ball screw (5) outer peripheral face threaded connection, ball screw (5) are close to direction sealing ring (20) one end and are equipped with piston tube (6) inside wall sliding connection's the solid fixed ring of lead screw (10).
2. An electro-hydraulic servo lift cylinder as defined in claim 1 wherein: the piston pipe (6) is located the outside one end of cylinder (4) and is fixed and be equipped with flange (11), flange (11) surface is equipped with oil drain plug screw (18).
3. An electro-hydraulic servo lift cylinder as defined in claim 1 wherein: and a bearing (16) is arranged between the inner wall of the screw rod fixing ring (10) and the end part of the ball screw rod (5).
4. An electro-hydraulic servo lift cylinder as defined in claim 1 wherein: and a locking and retaining pad (17) for preventing the lead screw fixing slip ring (10) from falling off is arranged at the end part of the ball lead screw (5).
5. An electro-hydraulic servo lift cylinder as defined in claim 1 wherein: and a bearing seat (12) is arranged at the joint of the ball screw (5) and the screw support flange (8), and a thrust bearing (9) and a conical needle roller bearing (14) for limiting the ball screw (5) to move along the axial direction are arranged in the bearing seat (12).
6. An electro-hydraulic servo lift cylinder according to claim 5, wherein: and a pressing end cover (13) is arranged at one end of the bearing seat (12) close to the coupler (3).
7. An electro-hydraulic servo lift cylinder as defined in claim 1 wherein: and a cylinder barrel fixing flange (19) is fixedly arranged outside the cylinder barrel (4).
8. An electro-hydraulic servo lift cylinder as defined in claim 1 wherein: and an oil injection screw plug (15) is arranged on the side wall of the mounting bracket (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210585914.3A CN115051507A (en) | 2022-05-26 | 2022-05-26 | Electro-hydraulic servo lifting cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210585914.3A CN115051507A (en) | 2022-05-26 | 2022-05-26 | Electro-hydraulic servo lifting cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115051507A true CN115051507A (en) | 2022-09-13 |
Family
ID=83159839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210585914.3A Pending CN115051507A (en) | 2022-05-26 | 2022-05-26 | Electro-hydraulic servo lifting cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115051507A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116989109A (en) * | 2023-09-27 | 2023-11-03 | 万向钱潮股份公司 | Ball screw pressure device |
-
2022
- 2022-05-26 CN CN202210585914.3A patent/CN115051507A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116989109A (en) * | 2023-09-27 | 2023-11-03 | 万向钱潮股份公司 | Ball screw pressure device |
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