Apparatus for producing vibrations for vibrators for use in connection with construction work专利检索-振动台施工工具及设备专利检索查询-专利查询网

Apparatus for producing vibrations for vibrators for use in connection with construction work

阅读：62发布：2023-02-17

专利汇可以提供Apparatus for producing vibrations for vibrators for use in connection with construction work专利检索，专利查询，专利分析的服务。并且An apparatus for producing vibrations in vibrators for use in construction work, especially in connection with the building of streets and highways, in which the torque of a driving motor is through a change gear transmission with at least two transmission ratios conveyed to an exciter shaft which in addition to a fixed rotary weight has arranged thereon at least one radially displaceable centrifugal weight connected to a counter weight and supported by the exciter shaft through the intervention of spring means in such a way that the center of gravity of the unbalance producer composed of the centrifugal weight and counter weight will at the smaller transmission ratio be located approximately on the axis of rotation of the exciter shaft but will be spaced to a greater extent therefrom at the higher transmission ratio.，下面是Apparatus for producing vibrations for vibrators for use in connection with construction work专利的具体信息内容。

权利要求

1. An apparatus for producing vibrations in vibrators for use in construction work, especially in connection with the building of streets and highways, which includes: motor means, exciter shaft means, variable change gear transmission means interposed between and operatively connected to said motor means and said shaft means, said transmission means including gear means with at least two different transmission ratios, clamping means and fixed rotary weight means respectively fixedly connected to said shaft means at axially spaced locations thereon, at least one movable centrifugal weight means radially displaceably arranged on said shaft means, counterweight means for and rigidly connected to said centrifugal weight means collectively confined by said clamping means with respect to said shaft means, and spring means continuously urging said centrifugal weight means exclusively toward said shaft means with said clamping means thereon, said centrifugal weight means and said counterweight means together forming an unbalance producer having its center of gravity located at least nearly on the axis of rotation of said shaft means when said transmission means is set for its smaller transmission ratio whereas when said transmission means is set for a higher transmission ratio the center of gravity of said unbalance producer is located in considerably greater spaced relationship to the axis of rotation of said shaft means in view of the higher centrifugal force of said centrifugal weight means directly overcoming said spring means and being displaced only radially outwardly due to clamping means restraint thereon.

2. An apparatus for producing vibrations in vibrators for use in construction work, especially in connection with the building of streets and highways, which includes: motor means, exciter shaft means, variable change gear transmission means interposed between and operatively connected to said motor means and said shaft means, said transmission means including gear means with at least two different transmission ratios, fixed rotary weight means fixedly connected to said shaft means, at least one movable centrifugal weight means radially displaceably arranged on said shaft means, counterweight means for and connected to said centrifugal weight means, spring means continuously urging said centrifugal weight means toward said shaft means, said centrifugal weight means and said counterweight means together forming an unbalance producer having its center of gravity located at least nearly on the axis of rotation of said shaft means when said transmission means is set for its smaller transmission ratio whereas when said transmission means is set for a higher transmission ratio the center of gravity of said unbalance producer is located in considerably greater spaced relationship to the axis of rotation of said shaft means in view of the higher centrifugal force of said centrifugal weight means overcoming said spring means and being displaced radially outwardly, and additional weight means associated with centrifugal weight means and forming a control mass.

3. An apparatus according to claim 2, which includes abutment means for limiting the radial displaceability of said centrifugal weight means.

4. An apparatus according to claim 2, in which said centrifugal weight means is offset by substantially 180* with regard to said fixed rotary weight means.

5. An apparatus According to claim 4, in which the mass of said fixed rotary weight means and the mass and the radial stroke of said centrifugal weight means are so adapted with regard to each other that approximately the same centrifugal force is obtained at the lower transmission ratio and at the higher transmission ratio of said transmission means.

6. An apparatus according to claim 2, in which said additional weight means is adjustable relative to said centrifugal weight means.

7. An apparatus according to claim 2, in which said change gear transmission means has more than two transmission ratios, and in which said spring means includes a plurality of serially arranged springs of different spring force.

8. An apparatus according to claim 7, which includes a plurality of unbalance producers each of which comprises centrifugal weight means, counterweight means and spring means arranged on said shaft means.

9. An apparatus according to claim 7, in which said unbalance producers are provided in offset arrangement on said shaft means in such a way that approximately the same centrifugal force is obtained at all transmission ratios.

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Apparatus for producing vibrations for vibrators for use in connection with construction work

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