CN103671341A - Cascade multi-cylinder actuator - Google Patents
Cascade multi-cylinder actuator Download PDFInfo
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- CN103671341A CN103671341A CN201310635183.XA CN201310635183A CN103671341A CN 103671341 A CN103671341 A CN 103671341A CN 201310635183 A CN201310635183 A CN 201310635183A CN 103671341 A CN103671341 A CN 103671341A
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- cylinder
- push rod
- spring mounting
- mounting seat
- spring
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- 238000007789 sealing Methods 0.000 abstract 7
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Abstract
A cascade multi-cylinder actuator comprises an air cylinder, a piston and springs. The air cylinder comprises a cylinder body, spring mounting seats and air inlets. The spring mounting seats are mounted on the inner wall of the cylinder body, and the air inlets are positioned on the side wall of the cylinder body. The piston comprises a push rod portion and at least two sealing portions. The sealing portions and the inner wall of the cylinder body are slidably sealed. The sealing portions are parallel to one another. The push rod portion is perpendicular to the sealing portions, the top of the push rod portion is fixed at the top sealing portion, and the lower end of the push rod portion penetrates out of the bottom end of the cylinder body. One ends of the springs are fixed on the spring mounting seats, and the other ends of the springs are abutted against the sealing portions below the spring mounting seats. The multilayer springs act on multiple sealing portions, so that thrust of the air cylinder is greatly increased without increasing of equipment volume and weight; the maximum thrust of the actuator can be 2-3 times that of a single-cylinder actuator in same type.
Description
technical field:
The present invention relates to industrial automatic control field, particularly a kind of tandem multi-cylinder actuator.
background technique:
In a lot of fields such as electric power, oil, chemical industry, require pneumatic control valve can close rapidly in the situation that dying source, and existing straight journey cylinder major part is single cylinder, along with the volume of the increase cylinder of thrust increases, weight increases, especially single-acting straight journey cylinder, bulking value is all very heavy.
summary of the invention:
Given this, be necessary to design that a kind of volume is little, lightweight, the tandem multi-cylinder actuator of high thrust.
A tandem multi-cylinder actuator, comprising: cylinder, piston body, spring; Cylinder comprises: cylinder body, be arranged on inboard wall of cylinder block spring mounting seat, be positioned at the suction port of cylinder side wall; Piston body comprises: push rod portion and at least two sealed departments; Sealed department and inboard wall of cylinder block slipper seal, parallel between sealed department, vertical seal portion of push rod portion and push rod portion top are fixed on top layer sealed department, and push rod subordinate end passes from cylinder body bottom; Spring one end is fixed on spring mounting seat, and the other end connects with the sealed department that is positioned at spring mounting seat below, and the space that the spring mounting seat that sealed department is adjacent with its below is separated is air chamber, and suction port is positioned on the cylinder side wall of air chamber corresponding part.
Preferably, sealed department is two, and that air chamber correspondingly has is two-layer, suction port has two covers.
Preferably, top spring mounting seat is fixed on cylinder body top, two-level spring fitting seat be fixed on the cylinder wall under top layer sealed department and top spring mounting seat and two-level spring fitting seat between distance be at least the stroke of piston body, in the position of the corresponding push rod of two-level spring fitting seat portion, be provided with through hole and pass for push rod portion.
Preferably, cylinder body end face is circle, and the number of springs on every grade of spring mounting seat is 3 ~ 8, and the spring circumferential arrangement on every grade of spring mounting seat.
Thereby the present invention has enlarged markedly cylinder thrust by multi-layer spring action is set on a plurality of sealed departments in the situation that not increasing equipment volume weight, and the maximum thrust of actuator of the present invention can be 2 ~ 3 times of same model single cylinder actuator.
accompanying drawing explanation:
Accompanying drawing 1 is the structural representation of the tandem multi-cylinder actuator of a width better embodiment.
In figure: sealed department 21, push rod portion 22, cylinder body 11, spring mounting seat 12, suction port 13, bottom 111, spring 3, air chamber 14, through hole 121.
embodiment:
As shown in Figure 1, a kind of tandem multi-cylinder actuator, comprising: cylinder, piston body, spring; Cylinder comprises: cylinder body 11, be arranged on inboard wall of cylinder block spring mounting seat 12, be positioned at the suction port 13 of cylinder side wall; Piston body comprises: push rod portion 22 and at least two sealed departments 21; Sealed department 21 and cylinder body 11 inwall slipper seals, parallel between sealed department 21,22 vertical seal portions 21 of push rod portion and push rod portion 22 tops are fixed on top layer sealed department 21, and push rod portion 22 lower ends pass from cylinder body 11 bottoms 111; Spring 3 one end are fixed on spring mounting seat 12, the other end connects with the sealed department 21 that is positioned at spring mounting seat 12 belows, the space that the spring mounting seat 12 that sealed department 21 is adjacent with its below is separated is air chamber 14, and suction port 13 is positioned on cylinder body 11 sidewalls of air chamber 14 corresponding parts.
In the present embodiment, sealed department 21 is two, and that air chamber 14 correspondingly has is two-layer, suction port 13 has two covers.
In the present embodiment, top spring mounting seat 12 is fixed on cylinder body 11 tops, two-level spring fitting seat 12 is fixed on the stroke that distance on cylinder body 11 walls under top layer sealed department 21 and between top spring mounting seat 12 and two-level spring fitting seat 12 is at least piston body, and the position of 12 corresponding push rod portions 22 being installed at two-level spring is provided with through hole 121 and passes for push rod portions 22.
In the present embodiment, cylinder body 11 end faces are circle, and spring 3 quantity on every grade of spring mounting seat 12 are 3 ~ 8, and spring 3 circumferential arrangement on every grade of spring mounting seat 12.
Claims (4)
1. a tandem multi-cylinder actuator, comprising: cylinder, piston body, spring; It is characterized in that: cylinder comprises: cylinder body, be arranged on inboard wall of cylinder block spring mounting seat, be positioned at the suction port of cylinder side wall; Piston body comprises: push rod portion and at least two sealed departments; Sealed department and inboard wall of cylinder block slipper seal, parallel between sealed department, vertical seal portion of push rod portion and push rod portion top are fixed on top layer sealed department, and push rod subordinate end passes from cylinder body bottom; Spring one end is fixed on spring mounting seat, and the other end connects with the sealed department that is positioned at spring mounting seat below, and the space that the spring mounting seat that sealed department is adjacent with its below is separated is air chamber, and suction port is positioned on the cylinder side wall of air chamber corresponding part.
2. tandem multi-cylinder as claimed in claim 1 actuator, is characterized in that: sealed department is two, and that air chamber correspondingly has is two-layer, suction port has two covers.
3. tandem multi-cylinder as claimed in claim 2 actuator, it is characterized in that: top spring mounting seat is fixed on cylinder body top, two-level spring fitting seat be fixed on the cylinder wall under top layer sealed department and top spring mounting seat and two-level spring fitting seat between distance be at least the stroke of piston body, in the position of the corresponding push rod of two-level spring fitting seat portion, be provided with through hole and pass for push rod portion.
4. tandem multi-cylinder as claimed in claim 2 actuator, is characterized in that: cylinder body end face is circle, and the number of springs on every grade of spring mounting seat is 3 ~ 8, and the spring circumferential arrangement on every grade of spring mounting seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310635183.XA CN103671341A (en) | 2013-12-03 | 2013-12-03 | Cascade multi-cylinder actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310635183.XA CN103671341A (en) | 2013-12-03 | 2013-12-03 | Cascade multi-cylinder actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103671341A true CN103671341A (en) | 2014-03-26 |
Family
ID=50309858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310635183.XA Pending CN103671341A (en) | 2013-12-03 | 2013-12-03 | Cascade multi-cylinder actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103671341A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4759260A (en) * | 1978-05-17 | 1988-07-26 | Lew Yon S | Super reliable air-spring return air cylinder |
| FR2679607A1 (en) * | 1991-07-24 | 1993-01-29 | Renault Vehicules Ind | Pneumatic cylinder with double piston and its use in driving a clutch control for a vehicle |
| US6314862B1 (en) * | 2000-01-24 | 2001-11-13 | Retterer Manufacturing Co., Inc. | Combination cylinder and pistons |
| CN2866923Y (en) * | 2006-01-20 | 2007-02-07 | 上海永乾机电有限公司 | Braking cylinder for pneumatic balance crane |
| CN202228466U (en) * | 2011-07-15 | 2012-05-23 | 四川大学 | Floating guiding hydraulic cylinder |
| CN102753840A (en) * | 2009-12-28 | 2012-10-24 | 费希尔控制国际公司 | Apparatus to increase a force of an actuator having an override apparatus |
| CN203604320U (en) * | 2013-12-03 | 2014-05-21 | 吴忠中创自控阀有限公司 | Cascade stage multi-cylinder actuating mechanism |
-
2013
- 2013-12-03 CN CN201310635183.XA patent/CN103671341A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4759260A (en) * | 1978-05-17 | 1988-07-26 | Lew Yon S | Super reliable air-spring return air cylinder |
| FR2679607A1 (en) * | 1991-07-24 | 1993-01-29 | Renault Vehicules Ind | Pneumatic cylinder with double piston and its use in driving a clutch control for a vehicle |
| US6314862B1 (en) * | 2000-01-24 | 2001-11-13 | Retterer Manufacturing Co., Inc. | Combination cylinder and pistons |
| CN2866923Y (en) * | 2006-01-20 | 2007-02-07 | 上海永乾机电有限公司 | Braking cylinder for pneumatic balance crane |
| CN102753840A (en) * | 2009-12-28 | 2012-10-24 | 费希尔控制国际公司 | Apparatus to increase a force of an actuator having an override apparatus |
| CN202228466U (en) * | 2011-07-15 | 2012-05-23 | 四川大学 | Floating guiding hydraulic cylinder |
| CN203604320U (en) * | 2013-12-03 | 2014-05-21 | 吴忠中创自控阀有限公司 | Cascade stage multi-cylinder actuating mechanism |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140326 |