3results about How to "Reduce walking speed" patented technology

The rear walking type self-pushing working machine comprises a main machine and a handle device, and the main machine comprises a walking assembly and a motor for driving the walking assembly; the handle device is connected to the host; the handle device further comprises an operating piece, a connecting rod assembly, a sensing device, a first connecting piece and a second connecting piece. The operating piece comprises a holding part used for being held by a user. The connecting rod assembly comprises a first connecting rod connected to the host; the sensing device is used for sensing thrust applied to the handle device to drive the rear walking type self-pushing working machine; the first connecting piece is fixedly connected with the operating piece; the second connecting piece is fixedly connected with the connecting rod assembly; the first connecting piece and the second connecting piece are in running fit so that the operating piece can rotate relative to the connecting rod assembly. In the using process of the backward walking type self-pushing working machine, when the acting force of a user on the operating piece enables the operating piece to rotate relative to the connecting rod assembly, the speed of the backward walking type self-pushing working machine can be increased, the detection precision is higher, and the reliability is better.

The present application relates to the technical field of roller compacted asphalt concrete impervious core wall in water conservancy and hydropower engineering, and particularly relates to a large-particle-size hydraulic asphalt concrete paving method, comprising the following steps: A. preparing the asphalt concrete core wall construction warehouse surface before paving; B. paving the large-particle-size hydraulic asphalt mixture prepared according to the optimized mixing ratio by using special paving equipment; C. compacting the large-particle-size hydraulic asphalt mixture to form a large-particle-size hydraulic asphalt concrete layer. The present application effectively solves the quality hidden trouble caused by paving the large-particle-size hydraulic asphalt concrete by using the existing hydraulic asphalt concrete paving technology, and highlights the advantages of fast construction speed, effective reduction of construction period and cost reduction of the large-particle-size hydraulic asphalt concrete.

The hydraulic walking system comprises an oil tank, an oil supplementing pump, a plunger pump assembly and a motor assembly, the plunger pump assembly comprises a plunger pump and a plunger pump adjusting assembly, the motor assembly comprises a motor and a motor adjusting assembly, the displacement of the plunger pump is controlled through the plunger pump adjusting assembly, and then the rotating speed of the motor is changed. The motor displacement is adjusted through the motor adjusting assembly, and the rotating speed of the motor is further adjusted. According to the hydraulic walking system and the crawler operation machine, parking gear shifting and extra gear shifting operation are not needed during transition acceleration, continuous change of motor displacement is achieved, and therefore stepless speed change of the walking speed is achieved; meanwhile, gear shifting operation in the advancing process is prevented, large pressure change caused by two-point displacement change of the motor in the advancing process is avoided, impact on a control valve set and the motor is reduced, and the service life is prolonged.