本实用新型属于机电产品，特别涉及一种往复式抽油泵无杆驱动机构。
The utility model belongs to an electromechanical product, in particular to a rodless driving mechanism for a reciprocating oil well pump.
现有大割幅切割器为往复式，这种切割器割台振动剧烈，且切割性能不高，不易切割较粗茎杆。
The existing harvester with large cutting range is the reciprocating form. The cutting table of the cutter has intense vibration and poor cutting property and is difficult to cut thick stalks.
现有大割幅切割器为往复式，这种切割器割台振动剧烈，且切割性能不高，不易切割较粗茎杆。
The existing harvester with large cutting range is the reciprocating form. The cutting table of the cutter has intense vibration and poor cutting property and is difficult to cut thick stalks.
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