CN204328145U - Efficiently can the electric actuator of Non-follow control - Google Patents

Abstract

The utility model relates to a high-efficiency manually controllable electric actuator, which includes a hand wheel and an electric actuator, and also includes a planetary reduction device, the input end of the planetary reduction device is connected with the hand wheel, and the output end of the planetary reduction device is connected to the electric actuator Executing mechanism connection; the utility model transmits the power to the planetary reduction device by manually turning the handwheel, and finally transmits the power to the output shaft to achieve the purpose of deceleration and torque increase, which improves the transmission efficiency and solves the laborious problem of turning the handwheel. At the same time, it also realizes the purpose of opening or closing the valve urgently under special circumstances, and the operation is flexible and convenient.

Description

Efficient and manually controllable electric actuator

technical field

The utility model relates to an electric actuator, in particular to an efficient manual controllable electric actuator.

Background technique

In recent years, with the implementation of a series of major projects such as my country's West-to-East Gas Pipeline, electric actuators installed on pipelines have been widely used. Electric actuators are used to control the opening and closing of valves to control water, steam, various corrosion The flow and flow direction of various types of fluids such as aggressive medium, mud, oil, liquid metal and radioactive medium.

When there is a power failure or the motor fails to start, the electric actuator will not be able to open and close the valve. At this time, it is necessary to manually rotate the handwheel on the electric actuator to control the opening and closing of the valve. Due to the large size of the valve for controlling large pipelines, The specifications of the electric actuators installed on large pipelines are correspondingly large. It is laborious to directly control the opening and closing of the valve by turning the handwheel by hand, and it is impossible to control the opening and closing of the valve urgently. The processing work brings fatal shortcomings, and even indirectly causes heavy losses of life and property.

Utility model content

The technical problem to be solved by the utility model is: in order to overcome the defect that the traditional electric actuator needs to manually turn the handwheel to directly control the opening and closing of the valve due to power failure, and the deficiency that the emergency opening and closing of the valve cannot be controlled in time, a high-efficiency manual control valve is provided. The advanced electric actuator has added a planetary reduction device between the handwheel and the electric actuator to improve the transmission efficiency.

The technical scheme adopted by the utility model to solve the technical problem is: an efficient and manually controllable electric actuator, including a handwheel and an electric actuator, and a planetary reduction device, including a handwheel and an electric actuator, which is characterized in that : It also includes a planetary reduction device, the input end of the planetary reduction device is connected with the hand wheel, and the output end of the planetary reduction device is connected with the electric actuator.

Further, the planetary reduction device includes a casing, a planetary carrier, a planetary gear, a sun gear, an inner ring gear, an input shaft and an output shaft, the hand wheel is fixedly connected to one end of the input shaft, and the sun gear is installed on the input shaft At the other end, at least one planetary gear is installed on the planet carrier, and the planetary gear meshes with the sun gear and the ring gear at the same time, the ring gear is fixed on the casing, and the planet carrier is fixedly connected with the output shaft, The rotation center of the hand wheel, the axis of the input shaft, the axis of the output shaft, the rotation center of the sun wheel, the revolution center of the planetary wheels and the axis of the ring gear are collinear.

In order to avoid the uneven force on the planet carrier, three planetary gears are evenly distributed and fixedly installed on the planet carrier.

The beneficial effect of the utility model is: by adding a planetary reduction device between the hand wheel and the electric actuator, the transmission efficiency is improved, and the problem of laborious when the traditional manual transmission device turns the hand wheel to directly control the opening and closing of the valve is solved, and at the same time it can realize The effect of emergency opening and closing of the valve can be controlled in time, and the operation is flexible and convenient.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is an exploded view of the utility model's highly efficient and manually controllable electric actuator;

Fig. 2 is a schematic structural view of the utility model's highly efficient and manually controllable electric actuator;

Fig. 3 is a partial enlarged view of A in Fig. 2 .

In the figure: 1. handwheel, 2. casing, 3. planet carrier, 4. planetary wheel, 5. center wheel, 6. inner ring gear, 7. input shaft, 8. output shaft, 9. electric actuator.

Detailed ways

Now in conjunction with accompanying drawing, the utility model is described in further detail. These drawings are all simplified schematic diagrams, and only schematically illustrate the basic structure of the utility model, so they only show the configurations related to the utility model.

As shown in Figures 1-3, the utility model provides an efficient and manually controllable electric actuator, including a hand wheel 1 and an electric actuator 9, and also includes a planetary reduction device, the input end of the planetary reduction device and the hand wheel 1 connection, the output end of the planetary reduction gear is connected with the electric actuator 9.

As shown in Figure 3, the planetary reduction device includes a casing 2, a planetary carrier 3, a planetary wheel 4, a center wheel 5, an inner ring gear 6, an input shaft 7 and an output shaft 8, and the hand wheel 1 and the input shaft 7 One end is fixedly connected, the sun gear 5 is installed on the other end of the input shaft 7, and at least one planetary gear 4 is installed on the planet carrier 3, and the planetary gear 4 is in gear mesh with the sun gear 5 and the ring gear 6 at the same time. The inner ring gear 6 is fixed on the casing 2, the planet carrier 3 is fixedly connected to the output shaft 8, the output shaft 8 is connected to the valve stem in the electric actuator 9, the rotation center of the hand wheel 1, the input shaft 7 The axis, the axis of the output shaft 8, the rotation center of the sun wheel 5, the revolution center of the planetary gear 4 and the axis of the ring gear 6 are collinear.

As shown in FIG. 1 , in order to prevent the planetary carrier 3 from being unevenly stressed, three planetary gears 4 are evenly distributed and fixedly installed on the planetary carrier 3 .

Below in conjunction with Fig. 1 illustrate working principle of the present utility model:

Manually rotate the hand wheel 1, the hand wheel 1 drives the input shaft 7 fixedly connected to it to rotate, the input shaft 7 drives the center wheel 5 connected to it to rotate through the spline, the rotation of the center wheel 5 drives the rotation of the planetary wheel 4 meshed with it, and the planetary wheel 4 It meshes with the ring gear 6 and rotates together. Because the ring gear 6 is fixed, the planetary gear 4 begins to revolve around the center gear 5 while rotating. The revolution of the planetary gear 4 drives the planet carrier 3 that fixes the planet gear 4 to rotate, and the planet carrier 3 Connected with the output shaft 8, the rotation of the planet carrier 3 drives the output shaft 8 to rotate, the output shaft 8 is connected to the valve stem, and then transmits the power to the valve stem, and the valve stem drives the valve core to rotate, thereby realizing the emergency opening and closing control of the valve.

The high-efficiency manual-controllable electric actuator designed by the utility model adds a planetary deceleration device between the handwheel and the electric actuator, which realizes manual turning of the handwheel while saving labor, and can also timely control the emergency opening and closing of the valve, transmission High efficiency, flexible and convenient operation, greatly saving manpower.

Inspired by the above ideal embodiment according to the utility model, through the above description content, relevant staff can completely make various changes and modifications within the scope of not deviating from the technical idea of the utility model. The technical scope of this utility model is not limited to the content in the description, but must be determined according to the scope of the claims.

Claims (3)

1. one kind efficiently can the electric actuator of Non-follow control, comprise handwheel (1) and electric actuator (9), it is characterized in that: also comprise planetary reduction gear, the input end of described planetary reduction gear is connected with handwheel (1), and the output terminal of planetary reduction gear is connected with electric actuator (9).

2. as claimed in claim 1 efficiently can the electric actuator of Non-follow control, it is characterized in that: described planetary reduction gear comprises casing (2), planet carrier (3), planet wheel (4), central gear (5), ring gear (6), input shaft (7) and output shaft (8), described handwheel (1) is fixedly connected with input shaft (7) one end, described central gear (5) is arranged on input shaft (7) the other end, described planet carrier (3) is at least installed a planet wheel (4), with central gear (5) and ring gear (6) gears meshing the while of described planet wheel (4), described ring gear (6) is fixed on casing (2), described planet carrier (3) is fixedly connected with output shaft (8), described handwheel (1) center of rotation, input shaft (7) axis, output shaft (8) axis, central gear (5) center of rotation, planet wheel (4) revolution center and ring gear (6) axis collinear.

3. as claimed in claim 2 efficiently can the electric actuator of Non-follow control, it is characterized in that: upper uniform fixed installation three planet wheels (4) of described planet carrier (3).