CN204131300U - A kind of external rotor servomotor preposition trailing type multi-stage motor cylinder structure - Google Patents
A kind of external rotor servomotor preposition trailing type multi-stage motor cylinder structure Download PDFInfo
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- CN204131300U CN204131300U CN201420590623.4U CN201420590623U CN204131300U CN 204131300 U CN204131300 U CN 204131300U CN 201420590623 U CN201420590623 U CN 201420590623U CN 204131300 U CN204131300 U CN 204131300U
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- rotating cylinder
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- servomotor
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Abstract
A kind of external rotor servomotor preposition trailing type multi-stage motor cylinder structure, by servomotor and drive system integrated design, motor is arranged on the front portion of electric cylinder, the power transmission shaft of motor directly with can only translation, not revolvable load connects, when machine operation, first motor outer rotor can drive the 3rd rotating cylinder rotation to stretch out, after the 3rd rotating cylinder stretches out completely, 3rd rotating cylinder can drive the second rotating cylinder rotation to stretch out, after the second rotating cylinder stretches out completely, second rotating cylinder can drive again the first rotating cylinder rotation to stretch out, complete three grades of promotions thus, it is long that the utility model has impulse stroke, compact conformation, easy to maintenance, stability advantages of higher.
Description
Technical field
The utility model belongs to electric cylinder technical field, is specifically related to a kind of servomotor preposition trailing type multi-stage motor cylinder structure of external rotor.
Background technology
Electric cylinder is the equipment of the rectilinear motion rotary motion of servomotor being converted to operating mechanism.Electric cylinder structure is simple, and servo control performance is good, is widely used.
Drive system and the motor of common electric cylinder separate, and integration degree is low, and take up room large, cost is high.Conveniently centralized lubrication and maintenance, reduce the volume of electric cylinder, the integrated design realizing motor and drive cylinder is imperative.
The electric cylinder of single-stage is subject to the restriction of cylinder body itself, and impulse stroke is little.In order to increase impulse stroke, need the length lengthening push rod and cylinder body, cause equipment heavy, manufacturing cost is high.The occasion that impulse stroke is grown ask for something installation dimension is little, single-stage electric cylinder often can not meet instructions for use.
In addition, current electric cylinder for power source, causes the huge of the total of electric cylinder with the motor of general external stator, internal rotor.
Summary of the invention
The advantages such as in order to overcome above-mentioned shortcoming, the purpose of this utility model is to provide a kind of external rotor servomotor preposition trailing type multi-stage motor cylinder structure, and have structure simple, easy to maintenance, servo control performance is good, and impulse stroke is long.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of external rotor servomotor preposition trailing type multi-stage motor cylinder structure, comprise cylinder bottom 2, cylinder barrel 9 is arranged on cylinder bottom 2, the screw rod 33 that center exists endoporus is arranged in the middle part of fixing non-rotary cylinder bottom 2, the power cable of servomotor is laid in the endoporus of screw rod 33, and servomotor resolver is (for detecting rotor corner, the transducer of rotating speed) cable, screw rod 33 and cylinder bottom 2 are fixed together by cylinder cover plate 1, 3rd bearing 13 is arranged on the front end of cylinder barrel 9, and fixed by the 3rd cover plate 14, 3rd retainer 11 is arranged on the 3rd bearing 13 outer ring, 3rd ball 12 of more than three remains between the 3rd bearing 13 and the first urceolus 8 by the 3rd retainer 11,
The inside of the first rotating cylinder 6 rear end is provided with internal thread, and be arranged on screw rod 33 by threaded engagement, the outer wall of the first rotating cylinder 6 is provided with external screw thread, the front end of the first rotating cylinder 6 is provided with the first axle head block 10, the rear end of the first rotating cylinder 6 is provided with the first connecting plate 3, the rear end of the first urceolus 8 is arranged on the first connecting plate 3, clutch shaft bearing 29 is arranged on the front end of the first urceolus 8, and fixed by the first cover plate 28, first retainer 31 is arranged on clutch shaft bearing 29 outer ring, first ball 30 of more than three remains between the second urceolus 7 and clutch shaft bearing 29 by the first retainer 31,
The inside of the second rotating cylinder 5 rear end is provided with internal thread, and be arranged on the first rotating cylinder 6 by threaded engagement, the outer wall of the second rotating cylinder 5 is provided with external screw thread, the front end of the second rotating cylinder 5 is provided with the second axle head block 18, the rear end of the second rotating cylinder 5 is provided with the second connecting plate 4, the rear end of the second urceolus 7 is arranged on the second connecting plate 4, second bearing 15 is arranged on the front end of the second urceolus 7, and fixed by the second cover plate 27, second retainer 17 is arranged on the second bearing 15 outer ring, second ball 16 of more than three remains between the 3rd rotating cylinder 32 and the second bearing 15 by the second retainer 17,
The inside of the 3rd rotating cylinder 32 rear end is provided with internal thread, and is arranged on the second rotating cylinder 5 by threaded engagement, and the front end of the 3rd rotating cylinder 32 is connected with external rotor servomotor,
External rotor servomotor comprises motor housing 26,3rd rotating cylinder 32 is fixed together with motor housing 26, it is inner that rotor 24 is fixed on motor housing 26 by electric motor end cap 23, power transmission shaft 21 is arranged on motor housing 26 li by the first thrust bearing 25 and the second thrust bearing 20, second thrust bearing 20 is located by motor small end cover 19, motor stator 22 is fixed on power transmission shaft 21, and power transmission shaft 21 is outer to be connected with the load of translation only.
Described a kind of external rotor servomotor preposition trailing type multi-stage motor cylinder structure, its workflow is:
Electrical power works, rotor 24 drive motor shell 26 rotates, motor housing 26 drives the 3rd rotating cylinder 32 to rotate, 3rd rotating cylinder 32 is rotated along the second rotating cylinder 5 advance, first order electric cylinder stretches out, until the end of the 3rd rotating cylinder 32 contacts with the second axle head block 18, in this advance process, the second ball 16 prevents from directly contacting between the 3rd rotating cylinder 32 and the second urceolus 7;
After the end of the 3rd rotating cylinder 32 contacts with the second axle head block 18,3rd rotating cylinder 32 drives the second rotating cylinder 5 to rotate, second rotating cylinder 5 will rotate advance along the first rotating cylinder 6, second level electric cylinder stretches out, until the end of the second rotating cylinder 5 contacts with the first axle head block 10, in this advance process, the first ball 30 prevents from directly contacting between the second urceolus 7 and the first urceolus 8;
After the end of the second rotating cylinder 5 contacts with the first axle head block 10, second rotating cylinder 5 drives the first rotating cylinder 6 to rotate, first rotating cylinder 6 will rotate advance along screw rod 33, third level electric cylinder stretches out, until the end of the first rotating cylinder 6 and the front end in contact of screw rod 33, in this advance process, the 3rd ball 12 prevents from directly contacting between the first urceolus 8 and cylinder barrel 9;
When motor reverse rotation, electric cylinder will be regained step by step.
The utility model has the following advantages:
One, the utility model is by external rotor servomotor and drive system integrated design, is conducive to centralized lubrication and maintenance, and structure is simple, and easy to maintenance, servo control performance is good.
Two, the utility model have employed three grades of transmissions, and impulse stroke is long.
Three, in outer cylinder front end, have employed the form that retainer keeps ball to slide, sliding friction when being advanced by electric cylinder changes rolling friction into, is conducive to reducing frictional force, reduces wearing and tearing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the B-B cutaway view in Fig. 1.
Fig. 3 is the A place partial sectional view in Fig. 1.
Fig. 4 is the structural representation of the utility model when stretching out one-level.
Fig. 5 is the structural representation of the utility model when stretching out two-stage.
Fig. 6 is the structural representation of the utility model when stretching out three grades.
, embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
With reference to Fig. 1, Fig. 2 and Fig. 3, a kind of external rotor servomotor preposition trailing type multi-stage motor cylinder structure, comprise cylinder bottom 2, cylinder barrel 9 is arranged on cylinder bottom 2, the screw rod 33 that center exists endoporus is arranged in the middle part of fixing non-rotary cylinder bottom 2, the power cable of servomotor is laid in the endoporus of screw rod 33, and servomotor resolver is (for detecting rotor corner, the transducer of rotating speed) cable, screw rod 33 and cylinder bottom 2 are fixed together by cylinder cover plate 1, 3rd bearing 13 is arranged on the front end of cylinder barrel 9, and fixed by the 3rd cover plate 14, 3rd retainer 11 is arranged on the 3rd bearing 13 outer ring, 3rd ball 12 of more than three remains between the 3rd bearing 13 and the first urceolus 8 by the 3rd retainer 11,
The inside of the first rotating cylinder 6 rear end is provided with internal thread, and be arranged on screw rod 33 by threaded engagement, the outer wall of the first rotating cylinder 6 is provided with external screw thread, the front end of the first rotating cylinder 6 is provided with the first axle head block 10, the rear end of the first rotating cylinder 6 is provided with the first connecting plate 3, the rear end of the first urceolus 8 is arranged on the first connecting plate 3, clutch shaft bearing 29 is arranged on the front end of the first urceolus 8, and fixed by the first cover plate 28, first retainer 31 is arranged on clutch shaft bearing 29 outer ring, first ball 30 of more than three remains between the second urceolus 7 and clutch shaft bearing 29 by the first retainer 31,
The inside of the second rotating cylinder 5 rear end is provided with internal thread, and be arranged on the first rotating cylinder 6 by threaded engagement, the outer wall of the second rotating cylinder 5 is provided with external screw thread, the front end of the second rotating cylinder 5 is provided with the second axle head block 18, the rear end of the second rotating cylinder 5 is provided with the second connecting plate 4, the rear end of the second urceolus 7 is arranged on the second connecting plate 4, second bearing 15 is arranged on the front end of the second urceolus 7, and fixed by the second cover plate 27, second retainer 17 is arranged on the second bearing 15 outer ring, second ball 16 of more than three remains between the 3rd rotating cylinder 32 and the second bearing 15 by the second retainer 17,
The inside of the 3rd rotating cylinder 32 rear end is provided with internal thread, and is arranged on the second rotating cylinder 5 by threaded engagement, and the front end of the 3rd rotating cylinder 32 is connected with external rotor servomotor,
External rotor servomotor comprises motor housing 26, electric motor end cap 23, motor minor flaps 19, rotor 24, the internal stator 22 of motor, power transmission shaft 21, first thrust bearing 25 and the second thrust bearing 20, 3rd rotating cylinder 32 is fixed together with motor housing 26, it is inner that rotor 24 is fixed on motor housing 26 by electric motor end cap 23, power transmission shaft 21 is arranged on motor housing 26 li by the first thrust bearing 25 and the second thrust bearing 20, second thrust bearing 20 is located by motor small end cover 19, the internal stator 22 of motor is fixed on power transmission shaft 21, power transmission shaft 21 is outer to be connected with the load of translation only.
Described a kind of external rotor servomotor preposition trailing type multi-stage motor cylinder structure, its workflow is:
With reference to Fig. 4, electrical power works, power transmission shaft 21 with can only the load of translation be connected, can not rotate, the internal stator 22 of motor is fixed on power transmission shaft 21, can not rotate, after energising, rotor 24 drive motor shell 26 rotates, 3rd rotating cylinder 32 is coordinated with the second rotating cylinder 5 by screw thread, motor housing 26 drives the 3rd rotating cylinder 32 to rotate, 3rd rotating cylinder 32 is rotated along the second rotating cylinder 5 advance, first order electric cylinder stretches out, until the end of the 3rd rotating cylinder 32 contacts with the second axle head block 18, in this advance process, second ball 16 prevents from directly contacting between the 3rd rotating cylinder 32 and the second urceolus 7, avoid sliding friction between the two, be conducive to reducing frictional resistance,
With reference to Fig. 5, after the end of the 3rd rotating cylinder 32 contacts with the second axle head block 18, drive second rotating cylinder 5 rotates by the 3rd rotating cylinder 32, second rotating cylinder 5 is coordinated with the first rotating cylinder 6 by screw thread, second rotating cylinder 5 will rotate advance along the first rotating cylinder 6, second level electric cylinder stretches out, until the end of the second rotating cylinder 5 contacts with the first axle head block 10, in this advance process, first ball 30 can prevent from directly contacting between the second urceolus 7 and the first urceolus 8, avoid sliding friction between the two, be conducive to reducing frictional resistance;
With reference to Fig. 6, after the end of the second rotating cylinder 5 contacts with the first axle head block 10, drive first rotating cylinder 6 rotates by the second rotating cylinder 5, and the first rotating cylinder 6 is coordinated with screw rod 33 by screw thread, and the first rotating cylinder 6 will rotate advance along screw rod 33, third level electric cylinder stretches out, until the end of the first rotating cylinder 6 and the front end in contact of screw rod 33, in this advance process, the 3rd ball 12 can prevent from directly contacting between the first urceolus 8 and cylinder barrel 9, avoid sliding friction between the two, be conducive to reducing frictional resistance;
When servomotor reverse rotation, electric cylinder will be regained step by step.
Claims (1)
1. an external rotor servomotor preposition trailing type multi-stage motor cylinder structure, comprise cylinder bottom (2), cylinder barrel (9) is arranged on cylinder bottom (2), the screw rod (33) that center exists endoporus is arranged on fixing non-rotary cylinder bottom (2) middle part, the power cable of servomotor is laid in the endoporus of screw rod (33), and the cable of servomotor resolver, screw rod (33) and cylinder bottom (2) are fixed together by cylinder cover plate (1), it is characterized in that: the 3rd bearing (13) is arranged on the front end of cylinder barrel (9), and fixed by the 3rd cover plate (14), 3rd retainer (11) is arranged on the 3rd bearing (13) outer ring, 3rd ball (12) of more than three remains between the 3rd bearing (13) and the first urceolus (8) by the 3rd retainer (11),
The inside of the first rotating cylinder (6) rear end is provided with internal thread, and be arranged on screw rod (33) by threaded engagement, the outer wall of the first rotating cylinder (6) is provided with external screw thread, the front end of the first rotating cylinder (6) is provided with the first axle head block (10), the rear end of the first rotating cylinder (6) is provided with the first connecting plate (3), the rear end of the first urceolus (8) is arranged on the first connecting plate (3), clutch shaft bearing (29) is arranged on the front end of the first urceolus (8), and fixed by the first cover plate (28), first retainer (31) is arranged on clutch shaft bearing (29) outer ring, first ball (30) of more than three remains between the second urceolus (7) and clutch shaft bearing (29) by the first retainer (31),
The inside of the second rotating cylinder (5) rear end is provided with internal thread, and be arranged on the first rotating cylinder (6) by threaded engagement, the outer wall of the second rotating cylinder (5) is provided with external screw thread, the front end of the second rotating cylinder (5) is provided with the second axle head block (18), the rear end of the second rotating cylinder (5) is provided with the second connecting plate (4), the rear end of the second urceolus (7) is arranged on the second connecting plate (4), second bearing (15) is arranged on the front end of the second urceolus (7), and fixed by the second cover plate (27), second retainer (17) is arranged on the second bearing (15) outer ring, second ball (16) of more than three remains between the 3rd rotating cylinder (32) and the second bearing (15) by the second retainer (17),
The inside of the 3rd rotating cylinder (32) rear end is provided with internal thread, and is arranged on the second rotating cylinder (5) by threaded engagement, and the front end of the 3rd rotating cylinder (32) is connected with external rotor servomotor,
External rotor servomotor comprises motor housing (26), 3rd rotating cylinder (32) and motor housing (26) are fixed together, it is inner that rotor (24) is fixed on motor housing (26) by electric motor end cap (23), it is inner that power transmission shaft (21) is arranged on motor housing (26) by the first thrust bearing (25) and the second thrust bearing (20), second thrust bearing (20) is located by motor small end cover (19), the internal stator (22) of motor is fixed on power transmission shaft (21), power transmission shaft (21) is connected with the load of translation only outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420590623.4U CN204131300U (en) | 2014-10-13 | 2014-10-13 | A kind of external rotor servomotor preposition trailing type multi-stage motor cylinder structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420590623.4U CN204131300U (en) | 2014-10-13 | 2014-10-13 | A kind of external rotor servomotor preposition trailing type multi-stage motor cylinder structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204131300U true CN204131300U (en) | 2015-01-28 |
Family
ID=52387621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420590623.4U Expired - Fee Related CN204131300U (en) | 2014-10-13 | 2014-10-13 | A kind of external rotor servomotor preposition trailing type multi-stage motor cylinder structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204131300U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626805A (en) * | 2016-03-24 | 2016-06-01 | 北京市地质机械厂 | Telescopic device |
-
2014
- 2014-10-13 CN CN201420590623.4U patent/CN204131300U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626805A (en) * | 2016-03-24 | 2016-06-01 | 北京市地质机械厂 | Telescopic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150128 Termination date: 20171013 |