CN213954506U - Side-mounted hand wheel for pneumatic actuator - Google Patents
Side-mounted hand wheel for pneumatic actuator Download PDFInfo
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- CN213954506U CN213954506U CN202022351710.2U CN202022351710U CN213954506U CN 213954506 U CN213954506 U CN 213954506U CN 202022351710 U CN202022351710 U CN 202022351710U CN 213954506 U CN213954506 U CN 213954506U
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Abstract
The utility model discloses a side-mounted hand wheel for a pneumatic actuating mechanism, relating to the technical field of valve actuating mechanisms; the pneumatic actuator comprises a shell positioned on one side of the pneumatic actuator, a sliding block connected in the shell in a sliding manner, a lead screw connected in the shell in a rotating manner, a worm wheel connected in the sliding block in a rotating manner, a worm matched with the worm wheel, a hand wheel connected with the worm, and a guide rod connected with the sliding block in a sliding manner; the pneumatic actuator comprises an output shaft; the side-mounted hand wheel also comprises a connector which is used for being matched with an output shaft of the pneumatic actuating mechanism; the lead screw penetrates through the sliding block and the worm wheel, and the lead screw is in threaded fit with the worm wheel. The utility model provides a pneumatic actuator is with side dress formula hand wheel has laborsaving characteristics. Meanwhile, the connector can be automatically connected with the output shaft, and when the pneumatic actuating mechanism runs, the connector can be automatically disconnected from the output shaft.
Description
Technical Field
The utility model belongs to the technical field of valve actuating mechanism, in particular to pneumatic actuator is with side dress formula hand wheel.
Background
For a pneumatic membrane actuating mechanism, when the actuating mechanism breaks down, a hand wheel is required to intervene, and a valve is opened and closed manually.
Because the working thrust of the pneumatic membrane actuating mechanism is very large, the existing hand wheel is very laborious in rotating.
Disclosure of Invention
The utility model aims at overcoming the above-mentioned shortcoming of prior art, provide a pneumatic actuator is with side dress formula hand wheel, have laborsaving characteristics.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a side-mounted hand wheel for a pneumatic actuator comprises a shell positioned on one side of the pneumatic actuator, a sliding block connected in the shell in a sliding manner, a lead screw connected in the shell in a rotating manner, a worm wheel connected in the sliding block in a rotating manner, a worm matched with the worm wheel, a hand wheel connected with the worm, and a guide rod connected with the sliding block in a sliding manner; the pneumatic actuator comprises an output shaft; the side-mounted hand wheel also comprises a connector which is used for being matched with an output shaft of the pneumatic actuating mechanism; the lead screw penetrates through the sliding block and the worm wheel, and the lead screw is in threaded fit with the worm wheel.
Preferably, the pneumatic actuator further comprises a shell and a film which divides the cavity in the shell into an upper cavity and a lower cavity; the upper end of the output shaft is positioned in the shell and connected with the film, an air passage is arranged in the output shaft, the upper end of the air passage is communicated with the upper cavity, and the other end of the air passage is positioned on one side of the output shaft close to the connector; one side of the sliding block, which is close to the output shaft, is provided with a sliding groove; the connector comprises a bolt which is connected in the chute in a sliding way and used for being inserted into the end part of the air passage, a ball which is connected to one end, close to the output shaft, of the bolt in a rotating way, and a pressurizing device used for pressurizing the inside of the chute; and a release mechanism which can release the bolt from the air passage when the pressure in the upper cavity is increased or reduced is arranged in the air passage.
Preferably, the pressurizing device comprises two circular arc-shaped cylinders, a piston connected in the cylinders in a sliding manner, and a circular arc-shaped piston rod;
one end of the piston rod is positioned in one of the cylinders and is connected with the corresponding piston, and the other end of the piston rod is positioned in the other cylinder and is connected with the corresponding piston; the pressurizing device also comprises an air pipe used for connecting the cylinder body and the chute, a first one-way valve which is positioned on the air pipe and faces the chute, a second one-way valve which is positioned on the cylinder body and faces the cylinder body, and a connecting rod used for connecting the cylinder body and the worm; the connecting rod is fixedly connected with the hand wheel.
Preferably, one end of the bolt close to the output shaft is provided with a conical surface which is convenient for the bolt to be separated from the air passage, the ball is positioned at the vertex of the conical surface, a second air passage is arranged in the bolt, one end of the second air passage is positioned at one end of the bolt close to the output shaft, the other end of the second air passage is communicated with the sliding chute, one side of the bolt is provided with a second sliding chute, a second sliding block used for separating the second air passage is connected in the second sliding chute in a sliding way, a second spring is arranged in the second sliding chute, a second guide surface which drives the second sliding block to move towards the second sliding chute when the bolt is inserted into the air passage is arranged at one end of the second sliding block, which is far away from the second spring, a second channel used for communicating a second air passage is arranged in the second sliding block, a third one-way valve facing the air passage is arranged in the second channel, a clamping groove is formed in one end, close to the output shaft, of the bolt, and a third sliding groove and a fourth sliding groove are formed in one end, close to the bolt, of the air passage; the disengaging mechanism comprises a thrust piston which is connected in the air passage in a sliding manner and is used for pushing the plug pin out of the air passage, and a third air passage which is positioned in the output shaft; two ends of the third air passage are positioned on the inner wall of the air passage, and two ends of the third air passage are positioned on two opposite sides of the thrust piston; the disengaging mechanism further comprises a third sliding block which is connected in the third sliding groove in a sliding manner and used for separating the third air passage, a third channel which is positioned in the third sliding block and used for communicating the third air passage, a fourth one-way valve which is positioned in the third channel, a clamping head which is connected in the fourth sliding groove in a sliding manner and used for being matched with the clamping groove, a third spring which is positioned in the third sliding groove, a fourth spring which is positioned in the fourth sliding groove, and a pull wire which is connected to the thrust piston and used for preventing the thrust piston from leaving the air passage; one end of the third sliding block, which is far away from the third spring, is provided with a first inclined plane which drives the third sliding block to move towards the third sliding groove when the plug pin is inserted into the air passage, and one end of the third sliding block, which is far away from the third spring, is provided with a second inclined plane which drives the third sliding block to move towards the third sliding groove when the thrust piston moves towards the plug pin; the third sliding block is positioned on one side of the thrust piston close to the bolt; when the plug pin is inserted into the air passage, one end of the third air passage close to the plug pin is communicated with one end of the second air passage close to the output shaft; the fourth one-way valve faces to the side far away from the second air channel.
Preferably, the cross section of the clamping groove is V-shaped, and the end part of the clamping head is matched with the clamping groove.
Preferably, a bearing for lubricating the worm is provided in the slider.
Preferably, a bearing for lubricating the worm wheel is arranged in the sliding block.
The utility model has the advantages that: the utility model provides a pneumatic actuator is with side dress formula hand wheel has laborsaving characteristics. Meanwhile, the connector can be automatically connected with the output shaft, and when the pneumatic actuating mechanism runs, the connector can be automatically disconnected from the output shaft.
Drawings
FIG. 1 is a schematic view of the present invention;
fig. 2 is a cross-sectional view of the present invention;
fig. 3 is another cross-sectional view of the present invention;
FIG. 4 is a schematic view of the coupling head and the decoupling mechanism;
FIG. 5 is an enlarged view of FIG. 4 at A;
FIG. 6 is a schematic view of a ball bearing against an output shaft;
FIG. 7 is a schematic view of the plug after insertion into the airway;
FIG. 8 is an enlarged view of FIG. 7 at B;
FIG. 9 is a schematic view of the thrust piston pushing the plug outward into the air passageway when the upper chamber is pressurized;
FIG. 10 is a schematic view of the reduction in air pressure within the chute when the upper chamber is depressurized;
figure 11 is a schematic view of the latch and air passage disengaged.
In the figure: the device comprises a shell 1, a sliding block 2, a lead screw 3, a worm wheel 4, a worm 5, a hand wheel 6, a guide rod 7, a shell 8, a film 9, an upper cavity 10, a lower cavity 11, an air channel 12, a sliding groove 13, a bolt 14, a ball 15, a cylinder 17, a piston 18, a piston rod 19, an air pipe 20, a connecting rod 21, a second one-way valve 23, a conical surface 24, a second air channel 25, a second sliding groove 26, a second sliding block 27, a second spring 28, a second guide surface 29, a second channel 30, a third one-way valve 31, a clamping groove 32, a third sliding groove 33, a fourth sliding groove 34, a thrust piston 35, a third sliding block 36, a third air channel 38, a clamping head 39, a fourth spring 40, a third spring 41, a third channel 42, a fourth one-way valve 43, a pull wire 44, a first inclined surface 45, a second inclined surface 46, a bearing 47, a limiting block 48 and an output shaft 49.
Detailed Description
The invention will be further explained in detail with reference to the drawings and the following detailed description:
example (b):
referring to fig. 1 to 11, a side-mounted hand wheel for a pneumatic actuator comprises a housing 1 positioned on one side of the pneumatic actuator, a slide block 2 slidably connected in the housing 1, a lead screw 3 rotatably connected in the housing 1, a worm wheel 4 rotatably connected in the slide block 2, a worm 5 matched with the worm wheel 4, a hand wheel 6 connected with the worm 5, and a guide rod 7 slidably connected with the slide block 2;
the pneumatic actuator includes an output shaft 49;
the side-mounted hand wheel further comprises a connector which is used for being matched with an output shaft 49 of the pneumatic actuating mechanism;
the lead screw 3 penetrates through the sliding block 2 and the worm wheel 4, and the lead screw 3 is in threaded fit with the worm wheel 4.
A bearing 47 for lubricating the worm 5 is provided in the slider 2. A bearing 47 for lubricating the worm wheel 4 is arranged in the slide block 2.
The pneumatic actuating mechanism also comprises a shell 8 and a film 9 which divides the inner cavity of the shell 8 into an upper cavity 10 and a lower cavity 11;
the upper end of the output shaft 49 is positioned in the shell 8 and connected with the film 9, an air passage 12 is arranged in the output shaft 49, the upper end of the air passage 12 is communicated with the upper cavity 10, and the other end of the air passage 12 is positioned on one side of the output shaft 49 close to the connector;
a sliding groove 13 is formed in one side, close to the output shaft 49, of the sliding block 2;
the connector comprises a bolt 14 which is connected in the chute 13 in a sliding way and is used for being inserted into the end part of the air flue 12, a ball 15 which is connected to one end of the bolt 14 close to the output shaft 49 in a rotating way, and a pressurizing device which is used for pressurizing the chute 13;
a release mechanism is provided within airway 12 to release latch 14 from airway 12 when pressure within upper chamber 10 increases or decreases.
The pressurizing device comprises two circular arc cylinder bodies 17, a piston 18 connected in the cylinder bodies 17 in a sliding way and a circular arc piston rod 19;
one end of the piston rod 19 is positioned in one of the cylinders 17 and connected with the corresponding piston 18, and the other end of the piston rod 19 is positioned in the other cylinder 17 and connected with the corresponding piston 18;
the pressurizing device further comprises an air pipe 20 for connecting the cylinder body 17 and the sliding chute 13, a first one-way valve which is positioned on the air pipe 20 and faces the sliding chute 13, a second one-way valve 23 which is positioned on the cylinder body 17 and faces the interior of the cylinder body 17, and a connecting rod 21 for connecting the cylinder body 17 and the worm 5;
the connecting rod 21 is fixedly connected with the hand wheel 6.
A conical surface 24 which is convenient for the separation of the bolt 14 and the air passage 12 is arranged at one end of the bolt 14 close to the output shaft 49, the ball 15 is positioned at the vertex of the conical surface 24, a second air passage 25 is arranged in the bolt 14, one end of the second air passage 25 is positioned at one end of the bolt 14 close to the output shaft 49, the other end of the second air passage 25 is communicated with the sliding groove 13, a second sliding groove 26 is arranged at one side of the bolt 14, a second sliding block 27 which is used for separating the second air passage 25 is connected in the second sliding groove 26 in a sliding manner, a second spring 28 is arranged in the second sliding groove 26, a second guide surface 29 which drives the second sliding block 27 to move towards the second sliding groove 26 when the bolt 14 is inserted into the air passage 12 is arranged at one end of the second sliding block 27 away from the second spring 28, a second air passage 30 which is used for communicating the second air passage 25 is arranged in the second sliding block 27, and a third one-way valve 31 which faces the air passage 12 is arranged in the second air passage 30, one end of the bolt 14 close to the output shaft 49 is provided with a clamping groove 32, and one end of the air passage 12 close to the bolt 14 is provided with a third sliding groove 33 and a fourth sliding groove 34;
the disengagement mechanism comprises a thrust piston 35 which is slidably connected in the air passage 12 and is used for pushing the plug pin 14 out of the air passage 12, and a third air passage 38 which is positioned in an output shaft 49;
the two ends of the third air passage 38 are positioned on the inner wall of the air passage 12, and the two ends of the third air passage 38 are positioned on the two opposite sides of the thrust piston 35;
the disengaging mechanism further comprises a third sliding block 36 which is connected in the third sliding chute 33 in a sliding manner and is used for separating the third air passage 38, a third channel 42 which is positioned in the third sliding block 36 and is used for communicating the third air passage 38, a fourth check valve 43 which is positioned in the third channel 42, a clamping head 39 which is connected in the fourth sliding chute 34 in a sliding manner and is used for being matched with the clamping groove 32, a third spring 41 which is positioned in the third sliding chute 33, a fourth spring 40 which is positioned in the fourth sliding chute 34, and a pull wire 44 which is connected to the thrust piston 35 and is used for preventing the thrust piston 35 from leaving the air passage 12;
the end of the third sliding block 36 away from the third spring 41 is provided with a first inclined surface 45 which drives the third sliding block 36 to move towards the third sliding chute 33 when the bolt 14 is inserted into the air channel 12, and the end of the third sliding block 36 away from the third spring 41 is provided with a second inclined surface 46 which drives the third sliding block 36 to move towards the third sliding chute 33 when the thrust piston 35 moves towards the bolt 14;
the third sliding block 36 is positioned on one side of the thrust piston 35 close to the bolt 14;
when the plug 14 is inserted into the air passage 12, one end of the third air passage 38 close to the plug 14 is communicated with one end of the second air passage 25 close to the output shaft 49;
the fourth check valve 43 faces a side away from the second air passage 25.
The cross section of the clamping groove 32 is V-shaped, and the end part of the clamping head 39 is matched with the clamping groove 32.
Principle of embodiment:
in normal use, the pneumatic actuator operates to actuate the valve, at which point the output shaft 49 and connector are disengaged.
The thrust piston 35 is arranged at the lower end of the air channel 12, when the air pressure of the upper cavity 10 is increased, the output shaft 49 moves downwards under the action of the membrane 9, at the moment, the thrust piston 35 moves towards the connecting head for a certain distance and is then pulled by the pull wire 44, and the thrust piston 35 is ensured not to be out of the air channel 12.
When the air pressure of the upper cavity 10 is reduced, the air pressure in the air passage 12 is reduced, the limit block 48 is arranged in the air passage 12, the thrust piston 35 can be pressed on the limit block 48 under the action of the air pressure, at the moment, the third slide block 36 separates the third air passage 38, and the output shaft 49 can move upwards.
Firstly, the principle of the up-and-down movement of the slide block 2 is explained, the hand wheel 6 drives the worm 5 to rotate, the worm wheel 4 is driven to rotate, the lead screw 3 is driven to rotate, the slide block 2 is driven to move up and down, when the output shaft 49 needs to be lifted manually, the connector is connected with the output shaft 49, and then the hand wheel 6 is rotated. Through worm wheel 4 and worm 5, it is more laborsaving to rotate hand wheel 6.
The principle of the pressurizing device is as follows: as illustrated in fig. 4, regardless of whether the hand wheel 6 is rotated clockwise or counterclockwise, one of the cylinders 17 pressurizes the slide channel 13, thereby moving the latch 14 toward the output shaft 49.
When the pneumatic actuator fails, it is assumed that the lower end of the air passage 12 is staggered with the plug pin 14, the plug pin 14 is above the air passage 12, at this time, the hand wheel 6 is rotated counterclockwise, at first, the hand wheel 6 does not drive the worm 5 to rotate, the hand wheel 6 drives the piston rod 19 to rotate, the piston 18 pressurizes the chute 13, the plug pin 14 moves towards the output shaft 49, the ball 15 abuts against the output shaft 49, when the piston 18 moves to the end of the cylinder body 17, when the hand wheel 6 further rotates counterclockwise, the cylinder body 17 rotates counterclockwise along with the hand wheel 6, under the action of the connecting rod 21, the worm 5 rotates, finally, the slider 2 is driven to move downward, the ball 15 moves downward along the output shaft 49, when the plug pin 14 moves to the air passage 12, under the action of the air pressure of the chute 13, the plug pin 14 is automatically inserted into the air passage 12, and the slot 32 is matched with the chuck 39, then under the action of the first inclined surface 45, the third slide block 36 moves towards the third sliding chute 33, the third channel 42 is communicated with the third air channel 38, under the action of the inner wall of the air channel 12 and the second guide surface 29, the second slide block 27 compresses the second spring 28, the second channel 30 is communicated with the second air channel 25, at the moment, the bolt 14 is connected with the air channel 12, and at the moment, the output shaft 49 can be lifted through the hand wheel 6.
When the air pressure in the upper chamber 10 rises after the maintenance of the pneumatic actuator is finished, the thrust piston 35 pushes the plug pin 14 outwards, and meanwhile, the output shaft 49 has downward force on the plug pin 14, and when the conical surface 24 on the plug pin 14 moves to the end of the air passage 12, the output shaft 49 moves downwards, and the plug pin 14 is separated from the air passage 12 under the action of the conical surface 24. See fig. 9. Output shaft 49 then moves downward under the air pressure of upper chamber 10.
When the air pressure in the upper cavity 10 is reduced, the air pressure in the sliding groove 13 is reduced through the second air passage 25 and the third air passage 38, at the moment, the bolt 14 has a force far away from the air passage 12, the force is increased along with the reduction of the air pressure, when the force is increased to a certain degree, the clamping head 39 and the clamping groove 32 are separated, and then the bolt 14 is pulled out of the air passage 12 immediately. The output shaft 49 then moves upward.
In this embodiment, the connector has the function of automatic disconnection, prevents under pneumatic actuator's effect that the connector is destroyed.
Claims (7)
1. A side-mounted hand wheel for a pneumatic actuator is characterized by comprising a shell positioned on one side of the pneumatic actuator, a sliding block connected in the shell in a sliding manner, a lead screw connected in the shell in a rotating manner, a worm wheel connected in the sliding block in a rotating manner, a worm matched with the worm wheel, a hand wheel connected with the worm, and a guide rod connected with the sliding block in a sliding manner;
the pneumatic actuator comprises an output shaft;
the side-mounted hand wheel also comprises a connector which is used for being matched with an output shaft of the pneumatic actuating mechanism;
the lead screw penetrates through the sliding block and the worm wheel, and the lead screw is in threaded fit with the worm wheel.
2. A side-mounted hand wheel for a pneumatic actuator according to claim 1,
the pneumatic actuating mechanism also comprises a shell and a film which divides the cavity in the shell into an upper cavity and a lower cavity;
the upper end of the output shaft is positioned in the shell and connected with the film, an air passage is arranged in the output shaft, the upper end of the air passage is communicated with the upper cavity, and the other end of the air passage is positioned on one side of the output shaft close to the connector;
one side of the sliding block, which is close to the output shaft, is provided with a sliding groove;
the connector comprises a bolt which is connected in the chute in a sliding way and used for being inserted into the end part of the air passage, a ball which is connected to one end, close to the output shaft, of the bolt in a rotating way, and a pressurizing device used for pressurizing the inside of the chute;
and a release mechanism which can release the bolt from the air passage when the pressure in the upper cavity is increased or reduced is arranged in the air passage.
3. A side-mounted hand wheel for a pneumatic actuator according to claim 2,
the pressurizing device comprises two arc-shaped cylinder bodies, a piston connected in the cylinder bodies in a sliding manner and an arc-shaped piston rod;
one end of the piston rod is positioned in one of the cylinders and is connected with the corresponding piston, and the other end of the piston rod is positioned in the other cylinder and is connected with the corresponding piston;
the pressurizing device also comprises an air pipe used for connecting the cylinder body and the chute, a first one-way valve which is positioned on the air pipe and faces the chute, a second one-way valve which is positioned on the cylinder body and faces the cylinder body, and a connecting rod used for connecting the cylinder body and the worm;
the connecting rod is fixedly connected with the hand wheel.
4. The side-mounted hand wheel for the pneumatic actuator according to claim 2, wherein one end of the bolt close to the output shaft is provided with a conical surface facilitating the separation of the bolt and the air passage, the ball is positioned at the apex of the conical surface, the bolt is internally provided with a second air passage, one end of the second air passage is positioned at one end of the bolt close to the output shaft, the other end of the second air passage is communicated with the sliding groove, one side of the bolt is provided with a second sliding groove, the second sliding groove is connected with a second sliding block for separating the second air passage in a sliding manner, the second sliding groove is internally provided with a second spring, one end of the second sliding block, which is far away from the second spring, is provided with a second guide surface for driving the second sliding block to move into the second sliding groove when the bolt is inserted into the air passage, the second sliding block is internally provided with a second passage for communicating the second air passage, and the second passage is internally provided with a third check valve facing the air passage, a clamping groove is formed in one end, close to the output shaft, of the bolt, and a third sliding groove and a fourth sliding groove are formed in one end, close to the bolt, of the air passage;
the disengaging mechanism comprises a thrust piston which is connected in the air passage in a sliding manner and is used for pushing the plug pin out of the air passage, and a third air passage which is positioned in the output shaft;
two ends of the third air passage are positioned on the inner wall of the air passage, and two ends of the third air passage are positioned on two opposite sides of the thrust piston;
the disengaging mechanism further comprises a third sliding block which is connected in the third sliding groove in a sliding manner and used for separating the third air passage, a third channel which is positioned in the third sliding block and used for communicating the third air passage, a fourth one-way valve which is positioned in the third channel, a clamping head which is connected in the fourth sliding groove in a sliding manner and used for being matched with the clamping groove, a third spring which is positioned in the third sliding groove, a fourth spring which is positioned in the fourth sliding groove, and a pull wire which is connected to the thrust piston and used for preventing the thrust piston from leaving the air passage;
one end of the third sliding block, which is far away from the third spring, is provided with a first inclined plane which drives the third sliding block to move towards the third sliding groove when the plug pin is inserted into the air passage, and one end of the third sliding block, which is far away from the third spring, is provided with a second inclined plane which drives the third sliding block to move towards the third sliding groove when the thrust piston moves towards the plug pin;
the third sliding block is positioned on one side of the thrust piston close to the bolt;
when the plug pin is inserted into the air passage, one end of the third air passage close to the plug pin is communicated with one end of the second air passage close to the output shaft;
the fourth one-way valve faces to the side far away from the second air channel.
5. The hand wheel as claimed in claim 4, wherein the locking groove has a V-shaped cross section, and the end of the chuck is fitted with the locking groove.
6. A side mounted hand wheel for a pneumatic actuator as claimed in claim 1 wherein bearings are provided in the slide for lubricating the worm.
7. A side-mounted hand wheel for a pneumatic actuator as claimed in claim 1 wherein bearings are provided in the slider for lubricating the worm gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022351710.2U CN213954506U (en) | 2020-10-21 | 2020-10-21 | Side-mounted hand wheel for pneumatic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022351710.2U CN213954506U (en) | 2020-10-21 | 2020-10-21 | Side-mounted hand wheel for pneumatic actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213954506U true CN213954506U (en) | 2021-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022351710.2U Active CN213954506U (en) | 2020-10-21 | 2020-10-21 | Side-mounted hand wheel for pneumatic actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213954506U (en) |
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2020
- 2020-10-21 CN CN202022351710.2U patent/CN213954506U/en active Active
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