CN216279672U - Pneumatic straight stroke automatic switching device - Google Patents
Pneumatic straight stroke automatic switching device Download PDFInfo
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- CN216279672U CN216279672U CN202121895871.6U CN202121895871U CN216279672U CN 216279672 U CN216279672 U CN 216279672U CN 202121895871 U CN202121895871 U CN 202121895871U CN 216279672 U CN216279672 U CN 216279672U
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- split nut
- valve
- cylinder
- switching device
- automatic switching
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Abstract
The utility model relates to the technical field of actuators and discloses a pneumatic straight stroke automatic switching device which comprises an air source, two connecting pieces, a manual control valve, a shuttle valve, a three-way valve, an air cylinder, piston rods, a cylinder body and a cylinder cover, a hand wheel, a split nut upper cover, a split nut base and a compression spring. The utility model adopts pneumatic and manual modes, is convenient to operate and is not easy to have error phenomenon.
Description
Technical Field
The utility model relates to the technical field of actuators, in particular to a pneumatic straight-stroke automatic switching device.
Background
The actuator is an automatic switch for controlling equipment, changes the size of a controlled medium through a control signal transmitted by the controller, thereby maintaining a controlled variable within a certain range, and has wide application in production and life.
The existing pneumatic straight-stroke actuator has to have pneumatic and manual adjusting functions in order to meet the use requirement, and a pneumatic and manual switching device is needed, but the existing mechanical switching mode is frequently used, so that misoperation is often caused during operation, and unnecessary loss is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that the pneumatic straight stroke automatic switching device in the prior art is frequently operated in a mechanical switching mode to cause unnecessary loss due to misoperation.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a pneumatic straight stroke automatic switching device comprises an air source, two connecting pieces, a manual control valve, a shuttle valve, a three-way valve, an air cylinder, piston rods, a cylinder body, a cylinder cover, a hand wheel, a split nut upper cover, a split nut base and a compression spring, wherein the air cylinder is respectively arranged on two sides of the split nut base, the cylinder body and the cylinder cover are both arranged on the split nut base, the hand wheel is fixedly arranged on the split nut upper cover, the split nuts are symmetrically positioned in the split nut base, the two split nuts are respectively connected with the two piston rods into a whole through cylindrical pins, one sides of the two split nuts, which are opposite to each other, are fixedly connected with the inner side wall of the split nut base through the compression spring, the air source is connected with the two connecting pieces, the two connecting pieces are connected with the manual control valve, and the manual control valve is connected with the shuttle valve, the shuttle valve is connected with a three-way valve, and the three-way valve is connected with the air cylinder.
Preferably, the manual control valve adopts a three-position four-way middle drain valve.
Preferably, the three-way valve adopts a single pneumatic control two-position valve.
Preferably, the number of the compression springs is four.
Preferably, the piston rod and the cylinder are of an integral structure.
Compared with the prior art, the utility model provides a pneumatic straight stroke automatic switching device, which has the following beneficial effects:
the pneumatic straight stroke automatic switching device is characterized in that piston rods of the air cylinders are respectively arranged on two sides of a split nut and connected through a cylindrical pin through the arranged air cylinders, and compression springs are respectively arranged on the outer sides of two sides of the split nut so as to rebound under the action of the compression springs after the air cylinders deflate, so that the split nut is combined with a screw rod to realize manual operation; when the manual control valve supplies air for the downstream, compressed air supplies air to a control port of the three-way valve through the shuttle valve, the reversing valve is opened, and the compressed air enters the bottom of a piston in the cylinder, so that the piston rod is pushed out, and simultaneously, an opening and closing nut connected with the piston rod is driven to be separated from the screw rod to realize pneumatic operation.
The device has the advantages that the parts which are not involved are the same as or can be realized by adopting the prior art, the pneumatic and manual modes are adopted, the operation is convenient, and the phenomenon of errors is not easy to occur.
Drawings
Fig. 1 is a schematic structural diagram of a pneumatic straight-stroke automatic switching device provided by the utility model;
fig. 2 is a schematic sectional view along the direction a-a in fig. 1.
In the figure: the device comprises an air source 1, a two-way connector 2, a manual control valve 3, a shuttle valve 4, a three-way valve 5, a cylinder 6, a nut upper cover 7, a hand wheel 8, a nut 9, a piston rod 10, a cylindrical pin 11, a nut base 12, a compression spring 13, a cylinder body 14 and a cylinder cover 15.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-2, a pneumatic straight stroke automatic switching device comprises an air source 1, two connecting pieces 2, a manual control valve 3, a shuttle valve 4, a three-way valve 5, an air cylinder 6, piston rods 10, a cylinder body 14, a cylinder cover 15, a hand wheel 8, a split nut 9, a split nut upper cover 7, a split nut base 12 and a compression spring 13, wherein the air cylinder 6 is respectively arranged at two sides of the split nut base 12, the cylinder body 14 and the cylinder cover 15 are both arranged on the split nut base 12, the hand wheel 8 is fixedly arranged on the split nut upper cover 7, the split nuts 9 are symmetrically arranged inside the split nut base 12, the two split nuts 9 are respectively connected with the two piston rods 10 through cylindrical pins 11, one side of the two split nuts 9, which is far away from each other, is fixedly connected with the inner side wall of the split nut base 12 through the compression spring 13, the air source 1 is connected with the two connecting pieces 2, the two-way connection piece 2 is connected with a manual control valve 3, the manual control valve 3 is connected with a shuttle valve 4, the shuttle valve 4 is connected with a three-way valve 5, and the three-way valve 5 is connected with a cylinder 6.
The manual control valve 3 adopts a three-position four-way middle drain valve.
The three-way valve 5 adopts a single pneumatic control two-position valve.
The number of the compression springs 13 is four.
The piston rod 10 and the cylinder 6 are of an integral structure.
In the utility model, when in use, an air source 1 supplies air to a manual control valve 3 through two connecting pieces 2, when a grab handle of the manual control valve 3 is in an upper position, compressed air passes through a shuttle valve 4, at the moment, a one-way valve at the upper end of the shuttle valve 4 is opened, a one-way valve at the lower part is closed, the compressed air is supplied to a single-control two-position three-way air control port through the shuttle valve 4, a three-way valve 5 is opened through an opened air path, one way of the compressed air is supplied to a single-acting air cylinder 6 through an opened air path, piston rods 10 of the two air cylinders 6 extend out to drive a split nut 9 to be opened, pneumatic control is realized, similarly, when a switching grab handle of the manual control valve 3 is positioned at the lower side, the one-way valve at the lower end of the shuttle valve 4 is opened, the one-way valve at the upper end is closed, the air is supplied to the air cylinder 6 through the shuttle valve 4, the three-way valve 5 extends out to drive the split nut 8 to be opened, thereby realizing the pneumatic mode, when the three-position manual valve 3 is in a middle position, namely, the air source 1 no longer supplies air to the system, and simultaneously, the compressed air in the system begins to be discharged, the three-way valve 5 resets under the action of the spring force, the air cylinder 6 is communicated with the exhaust port, the split nut 9 drives the piston rod 10 to retract under the action of the spring 13 to tightly hold the screw rod, the split nut 9 and the hand wheel 8 are integrated with each other, so that the split nut 9 is driven to rotate by rotating the hand wheel 8, and finally the screw rod is driven to move, so that the manual operation is realized.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (5)
1. A pneumatic straight-stroke automatic switching device comprises an air source (1), two connecting pieces (2), a manual control valve (3), a shuttle valve (4), a three-way valve (5), an air cylinder (6), piston rods (10), a cylinder body (14), a cylinder cover (15), a hand wheel (8), a split nut (9), a split nut upper cover (7), a split nut base (12) and a compression spring (13), and is characterized in that the air cylinder (6) is respectively arranged at two sides of the split nut base (12), the cylinder body (14) and the cylinder cover (15) are both arranged on the split nut base (12), the hand wheel (8) is fixedly arranged on the split nut upper cover (7), the split nuts (9) are symmetrically positioned in the split nut base (12), the two split nuts (9) are respectively connected with the two piston rods (10) into a whole through a cylindrical pin (11), two one side that split nut (9) deviate from mutually all is through compression spring (13) and the inside wall fixed connection of split nut base (12), air supply (1) is connected the setting with two allies oneself with piece (2), two allies oneself with piece (2) and is connected the setting with manual control valve (3), manual control valve (3) are connected the setting with shuttle valve (4), shuttle valve (4) are connected the setting with three-way valve (5), three-way valve (5) are connected the setting with cylinder (6).
2. The pneumatic straight stroke automatic switching device according to claim 1, wherein the manual control valve (3) adopts a three-position four-way middle relief valve.
3. The pneumatic straight stroke automatic switching device according to claim 1, wherein the three-way valve (5) is a single pneumatic two-position valve.
4. A pneumatic straight stroke automatic switching device according to claim 1, wherein the number of said compression springs (13) is four.
5. The pneumatic straight stroke automatic switching device according to claim 1, wherein the piston rod (10) and the cylinder (6) are of an integral structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121895871.6U CN216279672U (en) | 2021-08-13 | 2021-08-13 | Pneumatic straight stroke automatic switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121895871.6U CN216279672U (en) | 2021-08-13 | 2021-08-13 | Pneumatic straight stroke automatic switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216279672U true CN216279672U (en) | 2022-04-12 |
Family
ID=81060699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121895871.6U Active CN216279672U (en) | 2021-08-13 | 2021-08-13 | Pneumatic straight stroke automatic switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216279672U (en) |
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2021
- 2021-08-13 CN CN202121895871.6U patent/CN216279672U/en active Active
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