CN209414746U - A kind of pneumatic actuator with self-locking function - Google Patents
A kind of pneumatic actuator with self-locking function Download PDFInfo
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- CN209414746U CN209414746U CN201822033627.3U CN201822033627U CN209414746U CN 209414746 U CN209414746 U CN 209414746U CN 201822033627 U CN201822033627 U CN 201822033627U CN 209414746 U CN209414746 U CN 209414746U
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Abstract
The utility model belongs to valve control device technical field, in particular a kind of pneumatic actuator with self-locking function, including spring cylinder, transmission case and cylinder, the output end of the spring cylinder is equipped with transmission case, and the transmission case and the spring cylinder are tightly connected, and the other end of the transmission case is equipped with the cylinder, and it is connect with the cylinder seal, the cylinder and external air source are tightly connected, and the inside of the transmission case has cavity, are rotatably equipped with shift fork in the transmission case；By the way that handwheel is arranged, and handwheel and interlocking bar is enabled to be fixed by manual draw bar, when air failure or gas leakage, by the mechanical structure of then handwheel control also in lockup state, switch failure in the case where air failure can be prevented, interlocking bar can be pulled by handwheel, keep the instruction axis connecting with interlocking bar mobile, rotates shift fork, carry out the opening and closing of control valve, meanwhile it also achieving and manually controlling.
Description
Technical field
The utility model belongs to valve control device technical field, and in particular to a kind of pneumatic execution with self-locking function
Device.
Background technique
Pneumatic actuator is the executive device with the opening and closing of air pressure power drive or control valve, but by title pneumatic actuator or
Pneumatic device, but general popular referred to as pneumatic head, pneumatic actuator are also equipped with certain auxiliary device sometimes, commonly
There are valve positioner and handwheel, the effect of valve positioner is to improve the performance of actuator using feedback principle, makes to hold
Row device can realize that accurately positioning, the effect of handwheel are when control system is because having a power failure, stopping by the control signal of controller
Gas, controller without output or when executing agency's failure, using it can direct manipulation and control valve, with maintain production it is normal into
Row.
Pneumatic actuator is the executive device with the opening and closing of air pressure power drive or control valve, is adjusted by pneumatic mode
Valve switch, but there is also following disadvantages for the device:
1. since the executive device is by pneumatic control, if when pneumatic source or sealing element break down, pneumatic control
It will insensitive or failure；
2. existing executive device can only cannot be fixed using mechanical system, mode is single manually by pneumatic control.
Utility model content
To solve the problems mentioned above in the background art.The utility model provides a kind of with the pneumatic of self-locking function
Actuator is provided with mechanical self-locking device, may be implemented to manually control and the characteristics of self-locking function.
To achieve the above object, the utility model provides the following technical solutions: a kind of pneumatic execution with self-locking function
Device, including spring cylinder, transmission case and cylinder, the output end of the spring cylinder are equipped with transmission case, the transmission case and institute
Spring cylinder sealed connection is stated, the other end of the transmission case is equipped with the cylinder, and connect with the cylinder seal, described
Cylinder and external air source are tightly connected, and the inside of the transmission case has cavity, are rotatably equipped with shift fork in the transmission case, institute
It states transmission case and the cylinder is slidably fitted with first piston and second piston respectively, and the first piston and described second is lived
It is fixedly connected between plug by interlocking bar, the interlocking bar and the shift fork are rotatablely connected, the other end peace of the spring cylinder
Equipped with handwheel, the handwheel and the spring cylinder are rotatablely connected, and the handwheel and the interlocking bar are sequentially connected.
Preferably, the transmission case by cabinet, shift fork, case lid and instruction axis form, the both ends of the cabinet respectively with institute
It states spring cylinder and the transmission case is tightly connected, and be mutually communicated with the spring cylinder and the transmission case, the case lid
It is sealedly connected on the cabinet.
Preferably, the shift fork is rotatably installed on the cabinet, and has U-shaped deck, the instruction on the shift fork
Axis is fastened in the U-shaped deck, and the instruction axis is fixed in the interlocking bar.
Preferably, the output end of the handwheel is equipped with manual draw bar, and the manual draw bar is through the spring cylinder to institute
It states in spring cylinder.
Preferably, the spring cylinder is covered by spring cylinder shell, first piston, spring trombone slide and spring cylinder shell
Composition, the spring cylinder shell are hollow cylinder, the spring cylinder shell lidstock to the spring cylinder shell
Both ends, first piston sliding is in the spring cylinder shell, one end of the spring trombone slide and the first piston
It is fixedly connected, and the other end of the spring trombone slide is fixedly connected with the manual draw bar by trombone slide nut.
Preferably, the cylinder is made of cylinder baffle, second piston and interlocking bar, and the second piston sliding is described
In cylinder baffle, and the interlocking bar run through the spring cylinder and the transmission case, both ends respectively with the first piston and
The second piston is fixedly connected.
Preferably, the shift fork is eccentrically mounted, and the instruction axis slides on the axis of the spring cylinder Yu the transmission case
On line.
Compared with prior art, the utility model has the beneficial effects that
1, by the way that handwheel is arranged on spring cylinder, and handwheel and interlocking bar is enabled to be fixed by manual draw bar, passed through
Handwheel is rotated, manual draw bar can be pulled out, drives internal first piston to pull out, to pull interlocking bar, works as gas source
When failure or gas leakage, by the mechanical structure of then handwheel control also in lockup state, first piston will not be influenced to slide by gas source
It is dynamic, it is possible to carry out mechanical locking, switch failure in the case where air failure can be prevented；
2, interlocking bar can be pulled by handwheel, keeps the instruction axis connecting with interlocking bar mobile, drives internal first
Piston pulls out, to pull interlocking bar, rotates shift fork, carrys out the opening and closing of control valve, meanwhile, also achieve manual control
System, makes the control mode diversification of pneumatic actuator, and use is relatively reliable.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the schematic diagram of internal structure of spring cylinder baffle in the utility model；
Fig. 3 is the explosive view of the utility model；
In figure: 1, spring cylinder；11, spring cylinder shell；12, first piston；13, spring trombone slide；14, outside spring cylinder
Shell capping；2, transmission case；21, cabinet；22, shift fork；23, case lid；24, axis is indicated；3, cylinder；31, cylinder baffle；32, second
Piston；33, interlocking bar；4, handwheel；41, manual draw bar；411, trombone slide nut.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment:
Fig. 1-3 is please referred to, the utility model provides a kind of technical solution: a kind of pneumatic actuator with self-locking function,
Including spring cylinder 1, transmission case 2 and cylinder 3, the output end of spring cylinder 1 is equipped with transmission case 2, transmission case 2 and spring cylinder
1 is tightly connected, and the other end of transmission case 2 is equipped with cylinder 3, and is tightly connected with cylinder 3, and cylinder 3 and external air source sealing connect
It connects, the inside of transmission case 2 has cavity, is rotatably equipped with shift fork 22 in transmission case 2, transmission case 2 and cylinder 3 are slidably installed respectively
There are first piston 12 and second piston 32, and be fixedly connected between first piston 12 and second piston 32 by interlocking bar 33, is joined
Lever 33 and shift fork 22 are rotatablely connected, and the other end of spring cylinder 1 is equipped with handwheel 4, and handwheel 4 and spring cylinder 1 are rotatablely connected,
And handwheel 4 and interlocking bar 33 are sequentially connected.
In the present embodiment, the other end of spring cylinder 1 is equipped with handwheel 4, and handwheel 4 and spring cylinder 1 are rotatablely connected, and hand
Wheel 4 is sequentially connected with interlocking bar 33, and transmission case 2 and cylinder 3 are slidably fitted with first piston 12 and second piston 32 respectively, and the
It is fixedly connected between one piston 12 and second piston 32 by interlocking bar 33, by the way that handwheel 4 is arranged, and enables handwheel 4 and interlocking bar
33 are fixed by manual draw bar 41, when air failure or gas leakage, by mechanical structure that then handwheel 4 controls also in lock
Only state can prevent switch failure in the case where air failure, and interlocking bar 33 can be pulled by handwheel 4, make and interlocking bar
The instruction axis 24 of 33 connections is mobile, rotates shift fork 22, carrys out the opening and closing of control valve, meanwhile, it also achieves and manually controls.
Specifically, transmission case 2 by cabinet 21, shift fork 22, case lid 23 and instruction axis 24 form, the both ends of cabinet 21 respectively with
Spring cylinder 1 and transmission case 2 are tightly connected, and are mutually communicated with spring cylinder 1 and transmission case 2, and case lid 23 is sealedly connected on case
On body 21, shift fork 22 is rotatably installed on cabinet 21, and has U-shaped deck on shift fork 22, and instruction axis 24 is fastened on U-shaped deck
It is interior, and indicate that axis 24 is fixed in interlocking bar 33, instruction axis 24 is fastened in U-shaped deck, interlocking bar 33 is made to drive instruction axis
24 move left and right, so that shift fork 22 be made to rotate, complete the opening and closing work of valve, and spring cylinder 1 and transmission case 2 is enabled to be interconnected,
It can be controlled simultaneously with pneumatic mode and manual mode.
Specifically, the output end of handwheel 4 is equipped with manual draw bar 41, manual draw bar 41 is through spring cylinder 1 to spring cylinder 1
It is interior, it enables and being connected between handwheel 4 and interlocking bar 33 by manual draw bar 41, interlocking bar 33 can be pulled by handwheel 4, realize certainly
Lock function, and manually control function.
Specifically, spring cylinder 1 is by spring cylinder shell 11, first piston 12, spring trombone slide 13 and spring cylinder shell
14 composition of capping, spring cylinder shell 11 are hollow cylinder, 14 sealing of spring cylinder shell capping to spring cylinder shell 11
Both ends, first piston 12 slide in spring cylinder shell 11, one end of spring trombone slide 13 is fixedly connected with first piston 12,
And the other end of spring trombone slide 13 is fixedly connected with manual draw bar 41 by trombone slide nut 411, by the inside of spring cylinder 1
First piston 12 is set, enables handwheel 4 and first piston 12 link and installs, control the movement of first piston 12, by handwheel 4 to control
The opening and closing of valve processed.
Specifically, cylinder 3 is made of cylinder baffle 31, second piston 32 and interlocking bar 33, second piston 32 is slided in gas
In cylinder shell 31, and interlocking bar 33 run through spring cylinder 1 and transmission case 2, both ends respectively with first piston 12 and second piston 32
It is fixedly connected, by installing first piston 12 and second piston 32 at the both ends of interlocking bar 33, Lai Shixian pneumatic control and manually
Control, common to link, control valve opening and closing.
Specifically, shift fork 22 is eccentrically mounted, instruction axis 24 is slided on the axis of spring cylinder 1 and transmission case 2, can be made
Indicate that axis 24 during horizontally slipping, enables shift fork 22 realize rotation, to complete the opening and closing to valve.
The working principle and process for using of the utility model: after the utility model installs, transmission case 2 and cylinder 3 divide
It is not slidably fitted with first piston 12 and second piston 32, and solid by interlocking bar 33 between first piston 12 and second piston 32
Fixed connection by the way that handwheel 4 is arranged, and enables handwheel 4 and interlocking bar 33 pass through manual draw bar 41 and is fixed, when air failure or
When gas leakage, by mechanical structure that then handwheel 4 controls also in lockup state, switch failure in the case where air failure can be prevented,
Interlocking bar 33 can be pulled by handwheel 4, kept the instruction axis 24 connecting with interlocking bar 33 mobile, rotated shift fork 22, to control
The opening and closing of valve processed, meanwhile, it also achieves and manually controls.
Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic
It is equivalently replaced.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (7)
1. a kind of pneumatic actuator with self-locking function, including spring cylinder (1), transmission case (2) and cylinder (3), feature
Be: the output end of the spring cylinder (1) is equipped with transmission case (2), and the transmission case (2) and the spring cylinder (1) are close
Envelope connection, the other end of the transmission case (2) are equipped with the cylinder (3), and are tightly connected with the cylinder (3), the gas
Cylinder (3) and external air source are tightly connected, and the inside of the transmission case (2) has cavity, are rotatably equipped in the transmission case (2)
Shift fork (22), the transmission case (2) and the cylinder (3) are slidably fitted with first piston (12) and second piston (32) respectively,
And it is fixedly connected between the first piston (12) and the second piston (32) by interlocking bar (33), the interlocking bar (33)
Be rotatablely connected with the shift fork (22), the other end of the spring cylinder (1) is equipped with handwheel (4), the handwheel (4) with it is described
Spring cylinder (1) rotation connection, and the handwheel (4) and the interlocking bar (33) are sequentially connected.
2. a kind of pneumatic actuator with self-locking function according to claim 1, it is characterised in that: the transmission case
(2) by cabinet (21), shift fork (22), case lid (23) and instruction axis (24) form, the both ends of the cabinet (21) respectively with it is described
Spring cylinder (1) and the transmission case (2) are tightly connected, and are mutually passed through with the spring cylinder (1) and the transmission case (2)
Logical, the case lid (23) is sealedly connected on the cabinet (21).
3. a kind of pneumatic actuator with self-locking function according to claim 2, it is characterised in that: the shift fork (22)
It is rotatably installed on the cabinet (21), and there is U-shaped deck on the shift fork (22), the instruction axis (24) is fastened on described
In U-shaped deck, and the instruction axis (24) is fixed on the interlocking bar (33).
4. a kind of pneumatic actuator with self-locking function according to claim 1, it is characterised in that: the handwheel (4)
Output end be equipped with manual draw bar (41), the manual draw bar (41) is through the spring cylinder (1) to the spring cylinder (1)
It is interior.
5. a kind of pneumatic actuator with self-locking function according to claim 4, it is characterised in that: the spring cylinder
(1) it is made of spring cylinder shell (11), first piston (12), spring trombone slide (13) and spring cylinder shell capping (14), institute
Stating spring cylinder shell (11) is hollow cylinder, spring cylinder shell capping (14) sealing to the spring cylinder shell
(11) both ends, first piston (12) sliding is in the spring cylinder shell (11), and the one of the spring trombone slide (13)
End is fixedly connected with the first piston (12), and the other end of the spring trombone slide (13) passes through with the manual draw bar (41)
Trombone slide nut (411) is fixedly connected.
6. a kind of pneumatic actuator with self-locking function according to claim 1, it is characterised in that: the cylinder (3)
It is made of cylinder baffle (31), second piston (32) and interlocking bar (33), second piston (32) sliding is outside the cylinder
In shell (31), and the interlocking bar (33) runs through the spring cylinder (1) and the transmission case (2), and both ends are respectively with described the
One piston (12) is fixedly connected with the second piston (32).
7. a kind of pneumatic actuator with self-locking function according to claim 2, it is characterised in that: the shift fork (22)
Eccentrically mounted, instruction axis (24) slides on the axis of the spring cylinder (1) and the transmission case (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822033627.3U CN209414746U (en) | 2018-12-05 | 2018-12-05 | A kind of pneumatic actuator with self-locking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822033627.3U CN209414746U (en) | 2018-12-05 | 2018-12-05 | A kind of pneumatic actuator with self-locking function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209414746U true CN209414746U (en) | 2019-09-20 |
Family
ID=67936808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822033627.3U Active CN209414746U (en) | 2018-12-05 | 2018-12-05 | A kind of pneumatic actuator with self-locking function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209414746U (en) |
-
2018
- 2018-12-05 CN CN201822033627.3U patent/CN209414746U/en active Active
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