Novel switching mechanism for valve electric actuators
A technology of valve electric and switching mechanism, applied in valve device, valve operation/release device, engine components, etc., can solve the problems of large space occupation and complex structure, and achieve the effect of saving space, automating switching operation and reducing cost.
Inactive Publication Date: 2011-03-23
常州电站辅机股份有限公司
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Problems solved by technology
The disadvantage of this switching structure is that the switching mechanism requires at least two shafts, the structure is complex, and the space is large.
Method used
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[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0019] see Figure 1 to Figure 5 , A new switching mechanism for valve electric devices, including a switching shaft device, a spline shaft device, a pair of positioning arms 1, and a manual wheel 2.
[0020] The switching shaft device includes a switching handle 3, a switching shaft 4, and a shift fork 5. The switching shaft 4 is movably installed on the valve electric device box 6, and the switching handle 3 is fixed on the upper end of the switching shaft 4 through the key 3-1. The top is locked by the bolt 7; the shift fork 5 is perpendicular to the switching shaft 4 and fixed on the switching shaft 4 through the key 5-1, and there is a short cylinder 5-2 at the free end of the shifting fork 5 away from the switching shaft 4; There is a tab 4-1 at the lower end of the tab 4-1, and the end of the tab 4-1 is stuck between a pair of positioning arms 1...
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The invention relates to a novel switching mechanism for valve electric actuators, which comprises a switching shaft device, a spline shaft device, a pair of positioning arms and a manual wheel, wherein the switching shaft device comprises a switching handle, a switching shaft and a shifting fork, the switching handle and the shifting fork are both arranged on the switching shaft fixedly, a clamping tongue extending outwards along the surface of the switching shaft is arranged on the lower end of the switching shaft, the end part of the clamping tongue is clamped between the positioning arms, the positioning arms are movably arranged on a box body of a valve electric actuator, and a tension spring is arranged between the positioning arms. The spline shaft device comprises a spline shaft, a worm gear arranged on the spline shaft, and a pin roll, a clutch, a pushing rod and a manual clutch which are all arranged on the side of the worm gear vertically, wherein the spline shaft is vertical to the positioning arms and is clamped between the positioning arms, the clutch and the manual clutch are both matched with the spline shaft by splines, and jaws are respectively arranged on the end plane of the clutch opposite to the worm gear and the end plane of the manual clutch opposite to the manual wheel. The invention has the advantages of simple and compact structure, space saving, cost saving and automatic switching.
Description
technical field [0001] The invention relates to a novel switching mechanism for a valve electric device. Background technique [0002] All valve electric devices should be equipped with a manual operating mechanism. In order to change the working conditions, there should also be a switching means, that is, a manual → electric switching mechanism. The switching form adopted by the original valve electric device: multi-stage gear transmission from the motor to the worm shaft. The manual operating mechanism is an independent manual shaft, one end of the manual shaft is equipped with a manual gear, and the other end is equipped with a hand wheel. By switching parts, toggle the intermediate clutch, so that the gear on the intermediate clutch meshes with the manual gear, and now it can be operated manually. When electric, the motor rotates, driving the worm gear to rotate, and the intermediate clutch resets under the action of the tension spring, so that the intermediate clutch...
Claims
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IPC IPC(8): F16K31/05
Inventor 姜迎新蒋亚培马秀武
Owner 常州电站辅机股份有限公司