CN2091393U

CN2091393U - Hand, electric driven switching device of valve electric unit

Info

Publication number: CN2091393U
Application number: CN 91202514
Authority: CN
Inventors: 杜元珍
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-02-12
Filing date: 1991-02-12
Publication date: 1991-12-25

Abstract

The basic structure of the utility model is that a shifting fork and the shaft of the shifting fork are movably hinged. The two apex points of the shifting fork are respectively provided with annular grooves which can extend to a clutch, or lug bosses which are arranged in a one-way shoulder. A cam shaft under which a flat surface is arranged is arranged outside the shifting fork. The other end of the cam shaft is fixed with a switching handle. When the switch handle is wrenched, a cam rotates with an angle to push the shifting fork to move upwards. Under the situation of the same torque as the torque in the prior art applied, the utility model which is of simple structure can generate force bigger than the force of the corresponding mechanism in the prior art to drive the clutch to move, and the problems in the prior art are overcome.

Description

Hand, electric driven switching device of valve electric unit

The utility model belongs to the moving switching mechanism of a kind of electronic preferential semi-automatic torch, mainly is applicable to moving switching of torch on lower velocity shaft in the Electric actuator of valve.

In prior art, switching on lower velocity shaft has a kind of structure commonly used, the main shift fork that adopts half garden shape, on about tangent position in half garden, have one with described shift fork all-in-one-piece declutch shift shaft, one end of axle stretches out casing, and be fixed with one at axle head and switch handle, there are two boss that extend in the clutch tank at place, two summits in half garden, when moving handle, can make shift fork is that gyration center turns over a fan-shaped angle with the declutch shift shaft, and two boss on the shift fork just promote clutch and move one finish and switch required crow flight distance on output shaft.The thrust that this structure produced is very little, generally only is applicable to the electric device for valve of the less torque of output.

The purpose of this utility model provides the moving switching mechanism of torch in a kind of electric device for valve, and it can be under the situation that applies the moment identical with prior art, and the corresponding mechanism that produces in the aforementioned prior art of force rate that clutch is moved is a lot of greatly.

Basic structure of the present utility model is, shift fork supports with structural member, the movable hinge joint of shift fork and declutch shift shaft, making shift fork can declutch shift shaft be that gyration center turns over a fan-shaped angle, the boss in the place, two summits of described shift fork has a circular groove that can extend into clutch or unidirectional convex shoulder respectively; One protruding axle is arranged in described shift fork one outside, a plane and the vertical cam that is installed on the camshaft of described protruding axis are arranged below the described protruding axle; The other end of described camshaft is fixed with one and switches handle, and when moving handle, cam just turns over an angle, promotes shift fork and moves upward.

Elaborate below in conjunction with embodiment:

Accompanying drawing is a structural representation of the present utility model.Wherein last figure is a plan view, and figure below is a plan view.

1 is Snail bar in the described clutch among the figure, and 2 is the Snail wheel, and 3 is output shaft, and 4 is clutch, and 5 is the handwheel body.

In the drawings, shift fork 6 adopts the shape in approximate half garden, shift fork two end inboards have a boss 7 to extend in the circular groove of clutch 4 respectively, there is one only to play the declutch shift shaft 8 of hinge joint effect in outer rim one side of shift fork with described shift fork, described declutch shift shaft 8 is supported by structural member, make shift fork 6 be gyration center by declutch shift shaft 8, turn over a fan-shaped angle.The line at two boss 7 centers on the axis of described declutch shift shaft 8 and the described shift fork 6 is parallel.Shift fork 6 is when rotating this fan-shaped angle, and its boss 7 that extend in the clutch 4 can promote clutch, moves a certain distance on output shaft 3.

A protruding axle 9 of shift fork, the parallel axes of its axis and declutch shift shaft 8 are arranged in the outside of described shift fork 6.The cam 10 that a plane and the protruding axle of described shift fork 9 axis normal are arranged below the protruding axle 9 of described shift fork, gabarit at described cam 10 contacts with the lower edge of the protruding axle 9 of described shift fork, cam 10 is installed on the camshaft 11, the parallel axes of the protruding axle 9 of the axis of described camshaft 11 and described shift fork, and by case supports, its the other end stretches out casing, and be fixed with one and switch handle 12, when moving handle and turn to angle shown in the dotted line, camshaft 11 will drive cam 10 and turn to the position shown in the dotted line among the last figure, and engage with handwheel body 5, thereby finish clutch by electronic to manual handoff procedure.

Claims

1, the moving COMM communication of a kind of torch of electric device for valve, it comprises a shift fork and the declutch shift shaft that is supported by structural member, place, two summits at shift fork has one can extend into the circular groove of clutch or the boss in the unidirectional convex shoulder respectively, it is characterized in that, the movable hinge joint of described shift fork and declutch shift shaft, making shift fork can declutch shift shaft be that gyration center turns over a fan-shaped angle; The protruding axle of one shift fork is arranged in the outside of described shift fork, have below the protruding axle of described shift fork a plane vertical with the protruding axis of described shift fork be installed on cam on the camshaft, its gabarit contacts with the lower edge of protruding of described shift fork; The other end of described camshaft is fixed with one and switches handle, and when moving handle, cam just turns over an angle, and the boss that promotes on the shift fork moves upward, and moves on output shaft thereby promote clutch, finishes by electronic to manual switching.