45results about How to "Realize the fine-tuning function" patented technology

The invention provides an aligning and leveling worktable for measuring the cylindricity of a slewing type workpiece. The aligning and leveling worktable is composed of an aligning knob (1), an aligning supporting seat (2), an aligning sliding block (3), an aligning tension spring (4), an aligning fixed supporting seat (5), a bearing (6), an outer cover (7), a fixed steel ball (8), leveling knobs(9), a leveling knob supporting seat (10), an inclined block (11), a leveling tension spring (12), leveling steel balls (13), a leveling fixed supporting seat (14), a connecting ring (15), a base (16), a worktable (17) and a vertical tension spring (18). The leveling steel balls are movable supporting points, and the fixed steel ball is a fixed supporting point. The two leveling knobs are adjusted to lead the worktable to realize the leveling function under the support of the two leveling steel balls and the fixed steel ball. When the aligning knob is adjusted, the connecting ring drives the worktable to precisely move along two vertical directions under the action of the aligning tension spring so as to realize the aligning function of the worktable. The structure of the aligning and leveling worktable is simple and practical.

A coordinate measuring machine precision calibration detector comprises a guide pillar, wherein the guide pillar is arranged on a base, a rack guide rail is machined on the obverse side of the guide pillar, a guide groove is machined in the reverse side of the guide pillar, the guide pillar is sleeved with a guide holder, and the obverse side of the guide holder is provided with a square hole. A gear in contact with the rack guide rail is mounted on the guide holder, wherein the gear is used for fine adjustment of the guide holder through a net-shaped hand wheel. A guide stud transversely penetrates through the reverse side of the guide holder, wherein the front end of the guide stud is located in the guide groove, the net-shaped hand wheel is mounted at the rear end of the guide stud, and the guide stud is used for fixing the guide holder to the guide pillar. An angle adjusting seat is further mounted on one side of the guide holder, wherein the angle adjusting seat is provided with a semicircular through groove, and a cuboid-shaped platform and a gauge block fixing device of the platform are fixed above the angle adjusting seat. By means of the coordinate measuring machine precision calibration detector, fine adjustment of a gauge block to any proper height and continuous adjustment of the angle of inclination of the gauge block are realized, the gauge block can be used for measurement in different directions at different angles and heights, the arrangement is simple, the coverage is full, the amount of labor is small, consumed time is short, the measuring result has a small error, and work efficiency is high.

The invention provides a transformer substation reactive voltage control method which includes the following steps. Voltage and a reactive value of a transformer substation are obtained in real time; a reactive value of an electric reactor is uploaded; the way to adjust a triggering angle of the electric reactor is confirmed based on the voltage of the transformer substation, a preset voltage upper limit value and a preset voltage lower limit value; the reactive value of the transformer substation is received; whether a capacitor on a bus where the electric reactor exists is put or not is confirmed based on the reactive value of the transformer substation, a preset first reactive threshold value and a preset second reactive threshold value. The invention further provides a reactive voltage control system of the transformer substation so as to achieve regional reactive voltage control. Meanwhile, the function of finely tuning voltage reactive power is achieved so as to reduce operation times of the capacitor and a tapping point of a transformer to the utmost. Operational stability of the transformer substation is improved so as to effectively control reactive voltage of a grid transformer substation.

The invention discloses a hydraulic suspension device with double adjustment functions, which comprises a fine adjustment hydraulic cylinder, a movable box body, a coarse adjustment hydraulic cylinder, a support base, a fixed box body, an upper pull rod, an intermediate rod, a connecting rod, and a load hanger , pull down rod, one end of the fine adjustment hydraulic cylinder is installed on the support base, and the other end is installed on the movable box; the coarse adjustment hydraulic cylinder is installed on the upper end of the movable box, and the movable box is installed inside the fixed box , the fixed box is fixed on the support base; the upper pull rod is installed on the top of the movable box, and the connecting rod is installed between the upper pull rod and the lower rod; the load hanger is used to carry agricultural tools. The present invention is mainly applied to fixing and moving agricultural implements on the rear suspension of the tractor, so as to facilitate agricultural production. The system has obvious advantages such as no pollution, more reasonable force, improved utilization efficiency of force, realization of coarse adjustment and fine adjustment, better stability and self-regulation ability.