CN216692367U - Actuating device of electric actuator - Google Patents
Actuating device of electric actuator Download PDFInfo
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- CN216692367U CN216692367U CN202123454085.5U CN202123454085U CN216692367U CN 216692367 U CN216692367 U CN 216692367U CN 202123454085 U CN202123454085 U CN 202123454085U CN 216692367 U CN216692367 U CN 216692367U
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Abstract
The utility model discloses an actuating device of an electric actuator, which comprises a brake cylinder; one end of the main shaft is connected with a driving shaft of the electric actuator, and the other end of the main shaft penetrates through the brake cylinder along the axial direction; the brake unit is arranged on the inner wall of the brake cylinder and used for unlocking the main shaft when the action is executed and locking the main shaft when the action is not executed; the execution shaft is arranged at the other end of the main shaft, is in transmission connection with the main shaft through a linkage unit and drives the execution shaft to do linear motion when the main shaft rotates; the execution wheel is arranged beside the execution shaft, is in transmission connection with the execution shaft and rotates along with the linear motion of the execution shaft to open and close the valve body. The utility model can realize the self-braking function, avoids the need of arranging a brake independently in the prior art, reduces the cost, reduces the occupied space and is beneficial to being used in a narrow space.
Description
Technical Field
The utility model relates to the technical field of electric actuators, in particular to an actuating device of an electric actuator.
Background
An electric actuator is a driving device capable of providing linear or rotary motion, and controls the opening and closing of a valve body by the up and down movement of an output shaft of the actuator. The executing unit of the electric actuator is used for receiving the action of the driving unit and executing the operation of opening and closing the valve body.
In order to lock the valve body after the execution unit finishes the action in the prior art, an independent brake needs to be arranged on a transmission shaft of the execution unit, the brake is unlocked when the execution unit acts, and the valve body is automatically locked after the execution unit finishes the action. The independent brake structure increases the cost and the occupied space of the electric actuator, and influences the application of the electric actuator in a narrow range. And an execution unit with an automatic braking function does not exist in the prior art.
Therefore, it is necessary to develop an actuator of an electric actuator having a self-braking function.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an actuating device of an electric actuator, which aims to solve the technical problems that in the prior art, in order to lock a valve body after the actuating unit finishes acting, an independent brake needs to be arranged on a transmission shaft of the actuating unit, and the cost and the occupied space of the electric actuator are increased due to the structure of the independent brake, so that the application of the electric actuator in a narrow range is influenced.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
an actuator of an electric actuator comprising:
a brake drum;
one end of the main shaft is connected with a driving shaft of the electric actuator, and the other end of the main shaft axially penetrates through the brake cylinder;
the brake unit is arranged on the inner wall of the brake cylinder and used for unlocking the main shaft when the action is executed and locking the main shaft when the action is not executed;
the execution shaft is arranged at the other end of the main shaft, is in transmission connection with the main shaft through a linkage unit and drives the execution shaft to do linear motion when the main shaft rotates;
the execution wheel is arranged beside the execution shaft, is in transmission connection with the execution shaft and rotates along with the linear motion of the execution shaft to open and close the valve body.
Compared with the prior art, the utility model has the beneficial effects that:
the executing device of the utility model switches the valve body through the executing shaft and the executing wheel, the executing shaft is linked with the driving shaft of the electric actuator through the main shaft, after the executing action signal is input, the braking unit unlocks the main shaft, the driving shaft rotates to drive the main shaft to rotate, the main shaft rotates to drive the executing shaft to do linear motion, finally the executing wheel is driven to rotate to switch the valve body, and the braking unit locks the main shaft when the driving shaft does not work, thereby realizing the self-braking function, avoiding the need of arranging a brake separately in the prior art, reducing the cost, reducing the occupied space and being beneficial to being used in a narrow space.
On the basis of the technical scheme, the utility model can be further improved as follows:
furthermore, the brake unit comprises a brake caliper, a pressure telescopic mechanism and a self-resetting mechanism are arranged between the brake caliper and the inner wall of the brake cylinder, the pressure telescopic mechanism is used for driving the brake caliper to extend out along the radial direction to limit the brake shaft, the self-resetting mechanism is used for driving the brake caliper to contract along the radial direction to unlock the brake shaft, the pressure telescopic mechanism overcomes the driving force of the self-resetting mechanism to control the brake caliper to extend out in the power-on state, and the self-resetting mechanism drives the brake caliper and the pressure telescopic mechanism to contract in the power-off state.
By adopting the scheme, the pressure telescopic mechanism overcomes the driving force of the self-resetting mechanism when being powered on, the brake caliper extends out to realize the locking of the brake shaft, the self-resetting mechanism controls the brake caliper to reset to realize unlocking in the power-off state, after an execution action signal is input, the pressure telescopic mechanism is automatically controlled to synchronously power off, so that the main shaft is unlocked, the pressure telescopic mechanism is synchronously powered on to lock the main shaft after the execution is finished, the main shaft can be automatically unlocked by the structure under the emergency conditions such as power failure, the reset mechanism is convenient to control and execute resetting, and the potential safety hazard is avoided.
On the basis of the technical scheme, the utility model can be further improved as follows:
furthermore, the pressure telescopic mechanism comprises a pneumatic push rod arranged along the radial direction of the brake cylinder, the fixed end of the pneumatic push rod is fixed with the inner wall of the brake cylinder, the movable end of the pneumatic push rod is fixed with the brake caliper, and the pneumatic push rod is connected with an air pump.
Furthermore, the self-resetting mechanism is a reset spring, the reset spring is arranged between the inner wall of the brake cylinder and the brake caliper, and the reset spring is sleeved outside the pressure telescopic mechanism.
Furthermore, the linkage unit comprises a thread arranged on the ring surface of one end, facing the execution shaft, of the main shaft and a screw hole arranged on the end surface, facing the main shaft, of the execution shaft, the main shaft is inserted into the screw hole through threaded connection, and the main shaft drives the execution shaft to do linear motion along the main shaft when rotating.
Furthermore, a tooth surface is arranged on one side surface of the executing shaft, and a gear meshed with the tooth surface is arranged on the executing wheel.
Drawings
In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings that are needed in the detailed description of the utility model or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a first operation state structure diagram of the embodiment of the utility model.
Fig. 2 is a structural diagram of a second operating state of the embodiment of the utility model.
Shown in the figure:
1. a brake drum;
2. a main shaft; 201. a thread;
3. a drive shaft;
4. an execution shaft; 401. a tooth surface;
5. an execution wheel; 501. a gear;
6. a brake caliper;
7. a pneumatic push rod;
8. a return spring.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1 and fig. 2, the actuator of an electric actuator according to the present embodiment includes a brake cylinder 1, and a spindle 2 is inserted into the brake cylinder 1 along an axial direction.
One end of the main shaft 2 is connected with a driving shaft 3 of the electric actuator, the other end of the main shaft is connected with an execution shaft 4 through a linkage unit, and the execution shaft 4 is driven to do linear motion when the main shaft 2 rotates.
Specifically, the linkage unit includes a thread 201 arranged on an annular surface of one end of the main shaft 2 facing the actuating shaft 4 and a screw hole arranged on an end surface of the actuating shaft 4 facing the main shaft 2, the main shaft 2 is inserted into the screw hole through the thread 201, and the main shaft 2 drives the actuating shaft 4 to move linearly along the main shaft 2 when rotating.
Two symmetrically arranged brake units are arranged on the inner wall of the brake cylinder 1 and used for unlocking the main shaft 2 when the brake unit executes action and locking the main shaft 2 when the brake unit does not execute action.
The brake unit comprises a brake caliper 6, a pressure telescopic mechanism and a self-resetting mechanism are arranged between the brake caliper 6 and the inner wall of the brake cylinder 1, the pressure telescopic mechanism is used for driving the brake caliper 6 to extend out along the radial direction to limit a brake shaft, the self-resetting mechanism is used for driving the brake caliper 6 to contract along the radial direction to unlock the brake shaft, the pressure telescopic mechanism overcomes the driving force of the self-resetting mechanism to control the brake caliper 6 to extend out in the power-on state, and the self-resetting mechanism drives the brake caliper 6 and the pressure telescopic mechanism to contract in the power-off state.
The pressure telescopic mechanism overcomes the driving force of the self-resetting mechanism to stretch out the brake caliper 6 to realize brake shaft locking when being powered on, the self-resetting mechanism controls the brake caliper 6 to reset to realize unlocking in a power-off state, after an execution action signal is input, the pressure telescopic mechanism is automatically controlled to be powered off synchronously, so that the main shaft 2 is unlocked, the pressure telescopic mechanism is synchronously powered on to lock the main shaft 2 after execution is finished, the main shaft 2 can be automatically unlocked by the structure under emergency conditions such as power failure, the reset mechanism is convenient to control and execute resetting, and potential safety hazards are avoided.
The pressure telescopic mechanism comprises a pneumatic push rod 7 arranged along the radial direction of the brake cylinder 1, the fixed end of the pneumatic push rod 7 is fixed with the inner wall of the brake cylinder 1, the movable end of the pneumatic push rod 7 is fixed with the brake caliper 6, and the pneumatic push rod 7 is connected with an air pump.
The self-reset mechanism is a reset spring 8, the reset spring 8 is arranged between the inner wall of the brake cylinder 1 and the brake caliper 6, and the reset spring 8 is sleeved outside the pressure telescopic mechanism.
An execution wheel 5 is arranged beside the brake shaft, the execution wheel 5 is in transmission connection with the execution shaft 4, and the execution wheel 5 rotates along with the linear motion of the execution shaft 4 to switch the valve body.
One side surface of the actuating shaft 4 is provided with a tooth surface 401, and the actuating wheel 5 is provided with a gear 501 engaged with the tooth surface 401.
The actuating device of this embodiment comes the switch valve body through executive shaft 4 and executive wheel 5, executive shaft 4 passes through the 3 interlocks of main shaft 2 and electric actuator's drive shaft simultaneously, after the input execution action signal, braking unit unblock main shaft 2, drive shaft 3 is rotatory to drive main shaft 2 rotatory, main shaft 2 is rotatory to drive executive shaft 4 and is linear motion, it comes the switch valve body to finally drive executive wheel 5 rotatory, braking unit locking main shaft 2 when drive shaft 3 is out of work, thereby can realize the self-braking function, it needs to set up the stopper alone among the prior art to have avoided, the cost is reduced, and occupation of land space has been reduced, help using in narrow and small space.
In the description of the present invention, numerous specific details are set forth. It is understood, however, that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (6)
1. An actuator of an electric actuator, comprising:
a brake drum;
one end of the main shaft is connected with a driving shaft of the electric actuator, and the other end of the main shaft penetrates through the brake cylinder along the axial direction;
the brake unit is arranged on the inner wall of the brake cylinder and used for unlocking the main shaft when the action is executed and locking the main shaft when the action is not executed;
the execution shaft is arranged at the other end of the main shaft, is in transmission connection with the main shaft through a linkage unit and drives the execution shaft to do linear motion when the main shaft rotates;
the execution wheel is arranged beside the execution shaft, is in transmission connection with the execution shaft and rotates along with the linear motion of the execution shaft to open and close the valve body.
2. The actuating device of claim 1, wherein the brake unit comprises a brake caliper, a pressure telescopic mechanism and a self-resetting mechanism are arranged between the brake caliper and the inner wall of the brake cylinder, the pressure telescopic mechanism is used for driving the brake caliper to extend along the radial direction to limit the brake shaft, the self-resetting mechanism is used for driving the brake caliper to retract along the radial direction to unlock the brake shaft, the pressure telescopic mechanism controls the brake caliper to extend against the driving force of the self-resetting mechanism in an energized state, and the self-resetting mechanism drives the brake caliper and the pressure telescopic mechanism to retract in a de-energized state.
3. The actuator according to claim 2, wherein the pressure telescoping mechanism comprises a pneumatic push rod arranged along the radial direction of the brake cylinder, a fixed end of the pneumatic push rod is fixed with the inner wall of the brake cylinder, a movable end of the pneumatic push rod is fixed with the brake caliper, and an air pump is connected with the pneumatic push rod.
4. The actuator according to claim 2, wherein said self-resetting mechanism is a return spring disposed between an inner wall of said brake cylinder and said brake caliper, said return spring being disposed outside said pressure extension mechanism.
5. The actuator according to claim 1, wherein the linkage unit comprises a thread provided on an annular surface of an end of the main shaft facing the actuator shaft and a screw hole provided on an end surface of the actuator shaft facing the main shaft, the main shaft is inserted into the screw hole through a threaded connection, and the main shaft drives the actuator shaft to move linearly along the main shaft when rotating.
6. The actuator of claim 1, wherein said actuator shaft has a toothed surface on one side and said actuator wheel has a gear engaging said toothed surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123454085.5U CN216692367U (en) | 2021-12-31 | 2021-12-31 | Actuating device of electric actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123454085.5U CN216692367U (en) | 2021-12-31 | 2021-12-31 | Actuating device of electric actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216692367U true CN216692367U (en) | 2022-06-07 |
Family
ID=81815968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123454085.5U Active CN216692367U (en) | 2021-12-31 | 2021-12-31 | Actuating device of electric actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216692367U (en) |
-
2021
- 2021-12-31 CN CN202123454085.5U patent/CN216692367U/en active Active
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