| CPC F04B 53/22 (2013.01) | 16 Claims |

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1. An auxiliary mechanism comprising a mounting bracket, the mounting bracket comprising:
a mounting base;
a first mounting plate fixed on the mounting base; and
a second mounting plate fixed on the mounting base and arranged opposite to and spaced apart from the first mounting plate,
wherein the first mounting plate comprises at least one first mounting hole and a first fixing hole, the second mounting plate comprises a second fixing hole, and the first mounting hole is configured to mount a motor or an oil pump,
the mounting bracket further comprises a tubular connection structure between the first mounting plate and the second mounting plate, one end of the tubular connection structure is connected with an edge of the first fixing hole, and another end of the tubular connection structure is connected with an edge of the second fixing hole.
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