阅读说明：本技术 一种阀门电动装置的手动机构 (Manual mechanism of valve electric actuator ) 是由 项美根 项晓明 于 2019-10-12 设计创作，主要内容包括：本发明公开了一种阀门电动装置的手动机构,具有：箱体；输出轴,转动安装在箱体内,输出轴上套装有蜗轮；手动装置,安装在箱体内,手动装置具有：手轮轴,转动安装在箱体上；第一转臂,固定安装在手轮轴上；翻转轴,转动安装在第一转臂上；第一伞齿,转动安装在翻转轴上；传动轴,转动安装在箱体内,传动轴与电动装置的电机轴传动连接；第二转臂,固定安装在传动轴上,翻转轴转动安装在第二转臂上；第二伞齿,固定安装在传动轴上,第二伞齿与第一伞齿相啮合。(The invention discloses a manual mechanism of a valve electric device, which comprises: a box body; the output shaft is rotatably arranged in the box body and is sleeved with a worm wheel; a manual device installed in the case, the manual device having: the hand wheel shaft is rotatably arranged on the box body; the first rotating arm is fixedly arranged on the hand wheel shaft; the turnover shaft is rotatably arranged on the first rotating arm; the first bevel gear is rotatably arranged on the turnover shaft; the transmission shaft is rotatably arranged in the box body and is in transmission connection with a motor shaft of the electric device; the second rotating arm is fixedly arranged on the transmission shaft, and the turnover shaft is rotatably arranged on the second rotating arm; and the second bevel gear is fixedly arranged on the transmission shaft and is meshed with the first bevel gear.)

1. A manual mechanism for an electric valve actuator, comprising:

a box body;

the output shaft is rotatably arranged in the box body and sleeved with a worm wheel;

a manual device mounted in the case, the manual device having:

the hand wheel shaft is rotatably arranged on the box body;

the first rotating arm is fixedly arranged on the hand wheel shaft;

the turnover shaft is rotatably arranged on the first rotating arm;

the first bevel gear is rotatably arranged on the turnover shaft;

the transmission shaft is rotatably arranged in the box body and is in transmission connection with a motor shaft of the electric device;

the second rotating arm is fixedly arranged on the transmission shaft, and the turnover shaft is rotatably arranged on the second rotating arm;

and the second bevel gear is fixedly arranged on the transmission shaft and is meshed with the first bevel gear.

2. A manual mechanism for an electrically operated valve as claimed in claim 1 further comprising a hand wheel fixedly connected to an end of said hand wheel shaft.

3. The manual mechanism of claim 2, wherein the first and second rotatable arms are L-shaped, the first end of the first rotatable arm is fixedly mounted on the hand wheel shaft, and the first end of the roll-over shaft is rotatably mounted on the second end of the first rotatable arm; the first end of the second rotating arm is fixedly arranged on the transmission shaft, and the second end of the turnover shaft is rotatably arranged on the second end of the second rotating arm.

4. The manual mechanism of claim 3, further comprising a connecting gear, wherein the second bevel gear and the second rotating arm are disposed on the first end of the transmission shaft, and wherein the connecting gear is disposed on the second end of the transmission shaft, and wherein the connecting gear is in driving connection with a motor shaft of the electric actuator.

5. The manual mechanism of the electric device of the valve as claimed in claim 4, further comprising an electric mechanism, wherein the electric mechanism is disposed in the box body, the electric mechanism comprises a motor, a transmission mechanism and a worm, the motor is connected with the worm through the transmission mechanism, the worm is meshed with a worm wheel on the output shaft, a manual gear is disposed on a rotating shaft of the motor, and the connecting gear is meshed with the manual gear.

Technical Field

The invention belongs to the technical field of valve control equipment, and particularly relates to a manual mechanism of a valve electric device.

Background

In the process of implementing the invention, the inventor finds that the prior art has at least the following problems:

the conventional method is that the electric device is provided with a manual-electric switching mechanism, and before manual operation, an operator finishes switching the electric device from an electric state to a manual state and then performs manual operation. And the manual state is automatically converted into the electric state by an electric device.

The manual and electric switching type is most commonly applied, and particularly, the structure is mostly adopted by a multi-rotary valve electric device. However, the manual/electric switching on the output shaft has the problem of large switching force, that is, the manual/electric switching operation of the electric device under full load is difficult, and the invalid condition often occurs, which is one of the technical problems of products discussed and concerned for several years and is not solved effectively all the time.

In the practical application of the valve electric device, the failure of the manual and electric switching mechanism mainly comes from two aspects, namely the quality problem of the product and the use problem of the product. The switching mechanism is characterized in that manual state switching is not in place, the switching force is large, the switching mechanism cannot be separated, the switching mechanism cannot be reset to an electric state after manual operation, and the like. Especially, in an emergency state when power is lost or a fault is removed, the valve needs to be opened or closed, and the normal manual operation cannot be performed, and the consequences are extremely serious.

Disclosure of Invention

The invention aims to solve the technical problem of providing a manual mechanism of a valve electric device, which does not need a manual and electric switching mechanism, and solves the problem that the manual and electric switching mechanism often breaks down because the manual and electric switching mechanism works independently.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a manual mechanism for an electric valve actuator, comprising:

a box body;

the output shaft is rotatably arranged in the box body and sleeved with a worm wheel;

a manual device mounted in the case, the manual device having:

the hand wheel shaft is rotatably arranged on the box body;

the first rotating arm is fixedly arranged on the hand wheel shaft;

the turnover shaft is rotatably arranged on the first rotating arm;

the first bevel gear is rotatably arranged on the turnover shaft;

the transmission shaft is rotatably arranged in the box body and is in transmission connection with a motor shaft of the electric device;

the second rotating arm is fixedly arranged on the transmission shaft, and the turnover shaft is rotatably arranged on the second rotating arm;

and the second bevel gear is fixedly arranged on the transmission shaft and is meshed with the first bevel gear.

The hand wheel is fixedly connected with the end part of the hand wheel shaft.

The first rotating arm and the second rotating arm are both L-shaped, the first end of the first rotating arm is fixedly arranged on the hand wheel shaft, and the first end of the turnover shaft is rotatably arranged on the second end of the first rotating arm; the first end of the second rotating arm is fixedly arranged on the transmission shaft, and the second end of the turnover shaft is rotatably arranged on the second end of the second rotating arm.

The transmission shaft is provided with a first bevel gear and a first rotating arm, the transmission shaft is provided with a second bevel gear and a second rotating arm, the first bevel gear and the second rotating arm are arranged at the first end of the transmission shaft, the connection gear is arranged at the second end of the transmission shaft, and the connection gear is in transmission connection with a motor shaft of an electric device.

Still have electric mechanism, electric mechanism sets up in the box, electric mechanism includes motor, drive mechanism and worm, the motor passes through drive mechanism and is connected with the worm, the worm meshes with the worm wheel on the output shaft mutually, is equipped with manual gear in the pivot of motor, and connecting gear meshes with manual gear mutually.

One of the technical solutions has the following advantages or beneficial effects, and a manual and electric switching mechanism is not required. The manual or electric switching mechanism works independently, and the problem that the conventional manual and electric switching mechanism frequently breaks down is thoroughly solved.

Drawings

Fig. 1 is a schematic structural diagram of a manual mechanism of an electric valve actuator provided in an embodiment of the present invention;

FIG. 2 is a schematic view of the manual mechanism of the valve actuator of FIG. 1;

FIG. 3 is a schematic view of the manual mechanism of the valve actuator of FIG. 1;

FIG. 4 is a partial view of the manual mechanism of the valve actuator of FIG. 1;

the labels in the above figures are: 1. the device comprises a box body, 2, a motor, 3, a worm, 4, an output shaft, 5, a manual mechanism, 51, a hand wheel, 52, a hand wheel shaft, 53, a first rotating arm, 54, a first bevel gear, 55, a turnover shaft, 56, a second bevel gear, 57, a second rotating arm, 58, a transmission shaft, 59, a connecting gear, 6 and a moment mechanism.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1-4, a manual mechanism for an electric valve actuator, comprising:

a box body;

the output shaft is rotatably arranged in the box body and is sleeved with a worm wheel;

a manual device installed in the case, the manual device having:

the hand wheel shaft is rotatably arranged on the box body;

the first rotating arm is fixedly arranged on the hand wheel shaft;

the turnover shaft is rotatably arranged on the first rotating arm;

the first bevel gear is rotatably arranged on the turnover shaft;

the transmission shaft is rotatably arranged in the box body and is in transmission connection with a motor shaft of the electric device; the connecting gear on the transmission shaft is meshed with the manual pinion on the motor shaft, and the worm gear is driven by the motor gear to enable the worm gear and the output shaft to rotate.

The second rotating arm is fixedly arranged on the transmission shaft, and the turnover shaft is rotatably arranged on the second rotating arm;

and the second bevel gear is fixedly arranged on the transmission shaft and is meshed with the first bevel gear.

The hand wheel is also provided, and the hand wheel is fixedly connected with the end part of the hand wheel shaft.

The first rotating arm and the second rotating arm are both L-shaped, the first end of the first rotating arm is fixedly arranged on the hand wheel shaft, and the first end of the turnover shaft is rotatably arranged on the second end of the first rotating arm; the first end of the second rotating arm is fixedly arranged on the transmission shaft, and the second end of the turnover shaft is rotatably arranged on the second end of the second rotating arm.

The connecting gear is arranged at the second end of the transmission shaft and is in transmission connection with a motor shaft of the electric device.

The electric mechanism is arranged in the box body and comprises a motor, a motor gear, a manual pinion and a worm, the motor is connected with the worm through a transmission mechanism, the worm is meshed with a worm wheel on an output shaft, a manual gear is arranged on a rotating shaft of the motor, and a connecting gear is meshed with the manual gear.

When the manual operation is carried out, the hand wheel shaft, the first rotating arm, the turnover shaft and the second rotating arm are rotated, meanwhile, the first bevel gear rotates and is meshed with the second bevel gear to rotate, the driving shaft and the connecting gear are connected through the flat key to rotate, the manual pinion on the motor is driven, the gear on the electric worm is driven through the motor gear, the electric worm rotates to drive the worm wheel and the output shaft, the valve rod of the valve rotates, and the opening or closing of the valve is realized.

When the valve is powered on, the motor and the motor gear rotate to drive the electric worm, the worm wheel and the output shaft, so that the valve rod of the valve rotates, and the valve is automatically opened or closed. Meanwhile, a manual pinion on a motor shaft also rotates to drive the connecting gear, the second bevel gear and the first bevel gear to rotate, a turnover shaft connected with a flat key idles, the first rotating arm and the second rotating arm are not moved, and a hand wheel is also not moved.

When the electric hand wheel is operated by mistake, the first bevel gear and the turnover shaft idle run because the motor and the manual pinion drive the connecting gear and the second bevel gear to rotate, and the hand wheel is also ineffective to pull.

The manual machine abandons the traditional manual-electric switching mechanism, avoids the hidden troubles of manual-electric switching and manual or electric frequent faults, and has simple structure and applicability. The reliability of the valve in use is ensured.

The valve electric device abandons the traditional manual and electric switching mechanism, only has a direct manual mechanism, and the valve needs debugging, maintenance, power failure or emergency opening and closing when getting rid of faults in the using process, and the hand wheel of the manual mechanism can be directly pulled to realize the rotation of the valve opening and closing piece so as to realize the quick opening and closing of the valve. Simple, quick, safe and reliable.

After adopting foretell structure, do not need manual and electric switching mechanism. The manual or electric switching mechanism works independently, and the problem that the conventional manual and electric switching mechanism frequently breaks down is thoroughly solved.

The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to apply the inventive concept and solution to other applications without substantial modification.