Gas meter movement embedded transmission mechanism

Abstract

The invention discloses a built-in transmission mechanism of a gas meter movement, which includes a movement, a valve seat connected to the movement and a valve cover fitted on the valve seat, wherein: a support is installed on the movement; a worm gear is penetrated through the support Shaft; a groove is formed in the middle of the upper end of the bracket, and a worm gear with meshing teeth is installed in the groove, and the worm gear is set on the worm gear shaft; a worm screw with a semicircular hole is installed on the bracket, and the worm screw meshes with the worm gear; A rocker with one side protruding; the outer end of the rocker has a shaft structure, and the shaft structure is sequentially connected with at least two connecting rods; the rotation center of the rocker and the rotation center of the valve cover are on the same axis; The lower end of the shaft structure is matched with a rocker sleeve; the rocker sleeve is matched and arranged on the valve cover; the connecting rod is hinged with the upper pull arm; the upper pull arm is connected to the flagpole through a splined structure; Drive the connecting rod, the upper pulling arm and the flagpole to reciprocate at equal distances and angles. It has the advantages of stable performance, accurate data output, reasonable structure and durability.

Description

technical field [0001] The invention relates to a household and industrial gas meter, in particular to a built-in transmission mechanism of a gas meter movement. Background technique [0002] At present, the internal transmission mechanism of the gas meter is mainly to fix the gear on the valve cover. With the rotation of the valve cover, the gear is driven to rotate, and then the gear is driven out. This is simple and convenient. However, with the gas flow in the gas meter The rotation of the gear will show irregular speed changes and jumps with the change of the flow rate, which will lead to the gap and instability of the output data. With the prolongation of the use time and the wear of the transmission parts, this speed Changes and jumps will be gradually enlarged, which will directly affect the error of the data output by the gas meter. [0003] In addition, since the valve cover in the gas meter is screwed on the valve seat, fixing the gear on the valve cover will inc...

AI Technical Summary

Problems solved by technology

[0002] At present, the internal transmission mechanism of the gas meter is mainly to fix the gear on the valve cover. With the rotation of the valve cover, the gear is driven to rotate, and then the gear is driven out. This is simple and convenient. However, with the gas flow in the gas meter The rotation of the gear will show irregular speed changes and jumps with the change of the flow rate, which will lead to the gap and instability of the output data. With the prolongation of the use time and the wear of the transmission parts, this speed Changes and jumps will be gradually enlarged, which will directly affect the error of the data output by the gas meter

[0003] In addition, since the valve cover in the gas meter is screwed on the valve seat, fixing the gear on the valve cover will increase the running resistance of the valve cover, and at the same time, it is easy to cause the valve cover to jump when it is transported, shaken, inverted, etc. The phenomenon that causes the gas meter to fail

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